Optical data carrier, method and recording device for optical data carrier, and also method and playback device for optical data carrier

FIELD: data carriers.

SUBSTANCE: in optical data carrier, including track, including multiple recesses, formed on basis of first data being subject to recording, and platforms, formed between adjacent recesses, these recesses are recorded with deformation on basis of second data. First and second data are synthesized and played for realization of sound playback with broad frequency range. Also, first data are recorded with possible playback by means of common disc player. Playback of first data is controlled by second data for protection of recorded data.

EFFECT: higher efficiency.

6 cl, 44 dwg

 

The technical field to which the invention relates.

This invention relates to optical recording media having recorded on it a second data as auxiliary data in addition to the first data, which are the main data, to a method and apparatus for recording auxiliary data with the main data on this optical recording medium, and method and apparatus for reproducing optical recording media, having written the first and second data.

In particular, this invention relates to optical recording media, in which form multiple grooves of the track containing indentations, representing the recorded data, and areas between the grooves, is deformed to write other data to the recording method and device for recording data on an optical recording medium, and method and apparatus for reproducing optical recording media.

The level of technology

To date optical disk such as a CD-ROM with a diameter of 12 cm, is widely used as an optical recording medium, having recorded on it a sound information such as music rooms.

When recording on the optical disk audio data sequentially in chunks and added code error correction. The resulting d is installed is subjected to EFM-modulation (modulation eight to fourteen), as a result of modulation recording using NRZI modulation (record no return to zero invert). The audio data recorded on CD-ROM through repetition grooves and sites with nine different lengths of periods from 3T to 11T, where T is the base period equal to the period of the quantum channel.

Grooves formed on the optical disk on the basis of sound data have a length in the direction of the track, approximately from 0,87 to 3.18 mm at the period from 3T to 11T, and the width of the grooves in the direction perpendicular to the track is about 0.5 μm at a depth of about 0.1 μm.

Currently on the CD-ROM recording the audio data in the frequency range from 20 Hz to 20 kHz. However, there is a requirement for recording audio data in a wider frequency range to enable the playback of audio data with a higher sound quality. In addition, the requirement of recording audio data of three or more channels instead of two channels, i.e. the left and right channels, to provide a mixed audio playback, such as ambiophonics playback.

In addition, there is a requirement about the possibility of audio data recorded on the optical disk, only under specified conditions to protect the recorded audio data.

Sown the industry inventions

The objective of this invention is to provide optical recording media, providing mixed playback with recording auxiliary data in addition to the main data, the method and device for recording data on this optical recording medium, and method and device for reproducing the optical recording medium.

Another objective of this invention is to provide an optical recording medium that enables playback of at least the main data using conventional playback device for optical disks, and written supporting data in addition to the main data, and method and device for recording data on this optical recording media.

Another objective of this invention is to provide an optical recording medium which enables recording of audio data with a frequency range wider than a normal CD, or play multi-channel recording with high sound quality, and method and device for recording data on this optical recording media.

Another objective of this invention is to provide optical recording media, which provides reliable protection of recorded data, and method and device for recording data on this CD is Sitel record.

To solve the task is created, according to the invention, an optical recording medium including a track formed by a multitude of recesses, formed on the basis of the recorded first data, and areas between the grooves, wherein a set of grooves are deformed based on the second data.

According to the invention, it is also proposed recording device for optical recording media, which includes the objective lens for the information of the recording laser beam, provided at the output of the modulator is designed to modulate the recording laser beam emitted by a light source for emitting a recording laser beam based on the received first data and second data on the optical recording medium. This recording device includes a processor for processing signals to generate the first data on the basis of the main data recorded on the optical recording medium, and to generate second data based on the auxiliary data to the main data recorded on the optical recording medium.

According to this invention, it is also proposed reproducing device for the optical recording medium, while reproducing device includes an optical head for reading first and second data from optical recording media, enabling the th in the track, formed from a variety of slots based on the first data and the areas formed between adjacent grooves, and the grooves are deformed based on the second data; a first demodulator for demodulating the first data of the optical recording medium based on the output signals of the optical read head; and a second demodulator for demodulating the second data of the optical recording medium based on the output signals of the optical head reading. The second demodulator includes a processor demodulator for demodulating the output signal of this block, designed to recognize the level of the playback signal issued by the processor of the signal processing.

Playback device preferably includes a synthesizing unit for synthesizing the output signal of the first demodulator and the output signal of the second demodulator. The playback device also includes recognizing an external device the unit for recognizing whether the connected external device is registered external device. Playback device generates at least an output signal of the second demodulator, if the external device connected to the playback device is recognized by the recognition unit as a registered external device.

About the optical read head preferably includes a photodetector, divided in the track direction of the optical recording medium at least on the first part of the photodetector and the second photodetector. The playback device also includes a processor processing the output signals of the first and second parts of the photodetector. At first demodulator is fed to processor signal processing the summed signal representing the sum of the output signals of the first and second parts of the photodetector, while the second demodulator is fed to processor signal processing the difference signal representing the difference between the output signals of the first and second parts of the photodetector.

According to this invention, it is also proposed reproducing device for the optical recording medium, comprising an optical head for reading first and second data and recognition data from optical recording media, comprising a track formed by many notches formed on the basis of the first data, and areas formed between adjacent grooves, and the grooves are deformed based on the second data. The optical recording medium has recorded therein identification data. Reproducing device for the optical recording medium also includes a first demodulator for demodulating the first data of the optical recording medium on which the basis of the output signal of the optical head reading a second demodulator for demodulating the second data of the optical recording medium based on the output signal of the optical read head and a controller to control operation of the second demodulator based on the identification data read by the optical read head from the optical recording medium.

According to this invention, it is also proposed an optical recording medium comprising a recording area of the data with a passing spiral track formed by many notches formed on the basis of the first data, and areas formed between adjacent grooves, and the area management data for recording therein the control data for the first data recorded in the recording area of the data. At least a plurality of grooves recorded in the management area, the pre-distorted based on the second data.

The first data are preferably digital data recorded on the optical recording medium, while the second data is ancillary data for digital data. Auxiliary data is data which contain at least data concerning copyright.

The first data is preferably represented by the older bits of the digital data recorded on the optical recording medium, while the second presents data youngest retreadability data.

In the area of the control data is preferably recorded identification data indicating whether recorded or not the second data to the optical recording medium.

The first data recorded on the optical recording medium, preferably coded, while the second data is recorded as the key data for decoding the first data.

According to this invention, a method for recording on optical recording media, comprising modulating the recording laser beam generated by the light source is coming first and second data, information on an optical recording medium modulated recording laser beam using an objective lens for forming a track including at least a plurality of slots based on the first data, and sites formed between the grooves, and the deformation of the grooves formed on the optical recording medium based on the second data. The first data are generated based on the main data recorded on the optical recording medium, while the second data is created on the basis of auxiliary data to the main data recorded on the optical recording medium.

According to this invention, a method of playing an optical recording medium, comprising of read the first and second data from optical recording media, includes a track formed from a variety of grooves formed on the basis of the first data, and areas formed between adjacent grooves, and the grooves are deformed based on the second data; a first demodulation data of the optical recording medium based on the output signal obtained when reading data from optical recording media; and demodulates the second data on the basis of playback signals that are read from the optical recording medium.

The level of the playback signals read from the optical recording medium, preferably, recognize for demodulation of the second data.

The demodulated first and second data, preferably, are synthesized together and served on output.

In this way play, at least, the demodulated second data serves to output and reproduce, if an external device is connected to the reproducing device is recognized as a registered external device.

According to this invention, a method of reproduction for the optical recording media, comprising demodulates the first data on the basis of playback signals that are read from the optical recording medium, comprising a track formed from a variety of grooves that are created based on the recorded first on the, R, and areas formed between adjacent grooves, and a lot of fill deformed based on the second data, and on the optical recording medium identification data are recorded on it; and demodulates the second data on the basis of playback signals that are read from the optical recording medium based on the recognition identification data read from the optical recording medium. If the identification data recorded on the optical recording medium, indicate that the optical recording media recorded the second data, the second data demodulator based on the data read from the optical recording medium.

Brief description of drawings

Other objectives and advantages of the present invention follow from the subsequent description with reference to the accompanying drawings, which depict:

figure 1 - block diagram of the recording device for an optical disk according to this invention;

figa-2D - structure paths, which are formed grooves on the optical disk prepared in the recording device according to this invention;

figure 3 - block diagram of the playback device used for playback of an optical disk according to this invention;

figa and 4B - playback data obtained reproducing device, showing the s ' figure 3;

figa-5D - structure of the track containing the grooves formed on the optical disk being played reproducing apparatus shown in Fig 3;

figa-6D - structure of the track containing the grooves formed on the optical disk according to the second variant of implementation of the present invention;

figa and 7B, the structure of grooves formed on the optical disk according to the fourth variant of implementation of the present invention, in top view;

figa and 8B, the structure of grooves formed on the optical disk according to the sixth variant of implementation of the present invention, in top view;

figa and 9B, the structure of grooves formed on the optical disk according to the seventh variant of implementation of the present invention, in top view;

figa and 10B, the structure of grooves formed on the optical disk according to the eighth variant of implementation of the present invention, in top view;

11 is a block diagram of the photodetector forming the optical read head used in the reproducing device according to this invention;

figa-12E - structure of grooves formed on the optical disk according to the ninth variant of implementation of the present invention, in top view;

figa and 13C - structure of grooves formed on the optical disk according to the tenth option run this from the Britania, in the top view;

figa and 14C - structure of grooves formed on the optical disk according to the eleventh variant of implementation of the present invention, in top view;

Fig structure of grooves formed on an optical disc, according to another variant implementation of the present invention, in top view;

Fig the middle part of the recess formed on the optical disk according to the fourth variant of implementation of the present invention, the strain in the longitudinal direction based on the second data, in the top view;

Fig - output signal obtained when reproducing the optical disk shown in Fig;

Fig - optical disk according to this invention, in perspective.

Preferred embodiments of the inventions

Below is a detailed description of the optical recording medium, method and device for recording optical recording medium, and method and device for reproducing an optical recording medium with reference to the drawings.

(1) the Recording device

First is a description of the recording device for recording on the optical recording media according to this invention. For manufacturing the optical disk according to this invention, first show of the master disk 2, the exposed light using a recording device 1, is provided in figure 1, and treated by the electrotype to obtain the parent disk, which is then used for the manufacture of an optical disc. For the manufacture of the optical disc mother disc form the matrix CD and use a metal forming device that carries this matrix for molding the disk substrate. Then on the molded substrate disk put reflective tape.

The master disc 2, the exposed light using the recording device shown in figure 1, prepared by applying a light sensitizer on a flat glass substrate. Master disk 2 mounted on the motor 3 and rotate at a constant speed by an electric motor 3 driven in rotation under control of the servo circuit 4 of the drive motor. At this time, the generator FG is connected to the motor 3 generates an FG signal, the level of which increases in the range of a given angle of rotation. Servo circuit 4 causes the rotation of the motor 3, so that the FG signal has a selected frequency, which leads to the rotation of the disc 2 at a constant linear velocity.

The recording laser 5 is made, for example, in the form of a gas laser and emits a laser beam with a predetermined light power. The light modulator 6 is made in the form of electro-acoustic optical element with the possibility of the awn of modulating the intensity of the laser beam L, coming from the recording laser 5, so that the intensity of the laser beam L intermittently increases with level control signal S3. The light modulator 6 changes the optical power of the laser beam L, depending on the level of the control signal S3.

Mirror 8 changes the trajectory passing the laser beam L to emit light in the direction of the master disk 2. The lens 9 of the lens reduces reflected by the mirror 8, the light on the surface of the master disk 2. The mirror 8 and the lens 9 of the lens are then sequentially moved in the radial direction with salazones mechanism (not shown) synchronously with the rotation of the master disk 2. As of the filing of the mirror 8 and the lens 9, the recording device 1 of the optical disc sequentially moves the position of convergence of the laser light beam L from the inner edge to the outer edge of the disc 2 to the education at the master disk 2 passes spiral or concentric tracks. At this time on this track chain is formed of grooves consisting of a set of grooves corresponding to the modulating signals. This series of grooves width modulated control signal S3.

Scheme 10 analog-to-digital conversion converts the audio signal SA supplied from the specified source music for issuing output parallel 18-bit audio data DA, with a frequency of discr is a record 44.1 kHz.

Unit 11 bitwise processing divides the 18-bit audio data DA to the first data D2U, consisting of 16 high-order bits and the second data D2L, consisting of 2 least significant bits. The first data D2U correspond to audio data recorded on regular CD. The second data D2L are auxiliary data to the first data D2U and can be, for example, sound data of the high-frequency range that is not contained in the first data D2U.

In scheme 12 data serves data TOC (table of contents)recorded in the entrance area of the optical disk, and it handles the data of TOC in accordance with the format prescribed for the regular CD. This allows the 12 data to generate data of the output channel corresponding to the chain of fill.

To the TOC data recorded thus appended identification data ID of the disk, indicating that the optical disk recorded audio data DA, containing the second data D2L audio data frequency range, and IC identification data copy, indicating that the optical disk is an original optical disc made with the parent disk. By recording the identification data ID of the disk, it becomes possible to detect them during playback to allow playback of sound the new data DA, treated as the upper 16 bits and the younger 2 discharge, on the basis of the detection result. Based on the IC identification data copying can also determine whether or not the optical disk containing the audio data DA, copied from an original optical disk.

Similarly, figure 12 data processing processes the first data D2U, obtained from the output of block 11 bitwise processing in accordance with the format established for conventional CD-ROM, to create data D3 output channel corresponding to the chain of fill. Data D3 output channel corresponding to the chain grooves, are generated and sent to the output. Scheme 12 data adds to the first data D2U error correcting code for interleaving the resulting data to EFM-modulation of the processed results. When EFM-modulation scheme 12 data generates 14 channel bits with a period of 14 times higher than the base period, T, of each byte of the first data D2U, as shown in figa, and connects the 14-bit data with 3 connecting channel bits. Scheme 12 data performs NRZI modulation of the Daisy chain data to generate data D3 output channel, as shown in figv. At this time, on a normal CD, the laser beam L is switched on and off under control of the data D3 channel to form a chain of grooves with a width of excavation 0.5 micron.

In addition, the circuit 12, the data processing performs processing corresponding to the processing unit of the first data D2U high 16 bits to add error-correction code to the lowest 2-bit second data D2L. Then, the circuit 12 data interleaves the received data to convert the interleaved data into serial data. At this time, the circuit 12 data adds error correcting code by adding 4 bits of the sign of a simple parity. Thus, the circuit 12 data collects audio data, received from the senior first data D2U and the younger of the second data D2L, in modules of 4 digits for the formation of a block consisting of six data (24 bits) to add 4 parity bits to each block. Scheme 12 data alternates each block containing six data (24 bits) and the sign of parity (4 digits) and adds 4 bits of parity for a stripe unit.

Scheme 12 data processing converts the sequence of bits in a serial data chain. In the time period from the conversion of the logical level of the data D3 output channel logic level corresponding to the recess, to convert it into a logic level corresponding to the space formed between the grooves, scheme 12 data generates and outputs data D4 control the light power in accordance with a logic level serial data.

The control circuit 13 receives the data D3 output channel circuit 12 to the data processing to generate the control signal S3, depending on the level of which is intermittently increases the laser beam L in accordance with the logical level of these data D3 output channel.

Using the recording device 1 the upper 16 bits of the 18 bits constituting the audio data DA supplied to the device 1, are recorded in the form of a chain of fill, consisting of a set of grooves R1on the master disk 2, so that the upper 16 bits will be played reproducing device designed to play normal CD-ROM.

The control circuit 13 intermittently increases the laser beam L using data D4 of the control light power to generate the control signal S3, so that the width W2in the direction perpendicular to the track changes and becomes narrower than normal width W1in accordance with the data D4 of the control light power. This leads to the recording of the second data D2L, recorded on the optical disk, in the form of changes in the width of the notches in the direction perpendicular to the track.

When the data D4 of the control light power is recorded thus by using the width of the grooves, the upper signal value or the bottom value of the signal esmenjaud is in accordance with the data D4 of the control light power. In this example, the width of the grooves is modulated by 0.5±0.1 ám, so if the top or bottom value of the signal changes as shown in figa-2D, 16-bit first data D2U will be reproduced with sufficient amplitude tolerance in reproducing an appliance designed to play normal CD-ROM.

(2) the Device for playback

Below is a description of the playback device providing selective playback of the optical disk according to this invention, with the written data and a generic CD-ROM.

When installing the optical disk 21 in the reproducing device 20, as shown in figure 3, the device 20 causes the rotation of the optical disk 21 at a constant linear velocity by an electric motor 22 with the receiving RF signal playback obtained from the optical head 23 is read as a reference signal.

The optical head 23 reads used in this reproducing device 20 illuminates a laser beam to the optical disc 21 by using therein a semiconductor laser used as a light source, for receiving light beam reflected from the optical disc 21, a configured item, the receiving light. The optical head 23 reads outputs a RF signal vos is proizvedeniia, the level of which varies in accordance with the intensity of the returned light beam, received the photosensitive surface of the light receiving element. The RF signal playback varies in level in accordance with the notch P1or space R1formed on the optical disk 21, with a simultaneous change of its upper or lower value depending on the width of the grooves formed on the optical disk 21.

Circuit 24 amplifies the RF signal playback with a given amplification factor to obtain at the output end of the RF signal playback. In the initial state electoral circuit 25 generates an RF signal playback obtained from the output of the circuit 24, the circuit 26 EFM-demodulation. However, if the scheme 27 disc recognition detects that the installed optical disk 21 is an optical disk having recorded on it is not only the first data D2U, but the second data D2L, according to this invention, the electoral circuit 25 delivers the RF signal playback circuit 28 OCR level of the RF signal playback under control circuit 27 disc recognition.

If the installed optical disc 21 is a conventional optical disk 21, the circuit 26 EFM-demodulation produces a two-level detection signal RF playback obtained from the output of the circuit 24, for the expression is ativana data playback. Scheme 26 EFM-demodulation produces EFM-demodulation data playback for issuing output demodulated data. If, on the contrary, the circuit 27 disc recognition detects that the optical disk 21 is an optical disk according to this invention, the circuit 26 EFM-demodulation produces EFM-demodulation data playback obtained from the output of the circuit 28 OCR level of the RF signal playback under control circuit 27 disc recognition, for issuing output demodulated data. At this time, the circuit 26 EFM-demodulation produces output playback data corresponding to the repetition of the grooves and sites regardless of whether it is delivered to the optical disc 21 by the optical disk according to this invention, or a conventional CD-ROM.

The decoder 29 CIRC (cross-interspersed reed-Solomon code) decoding the output circuit 26 EFM-demodulation and corrects the output from the error by using the error correcting code added during recording, playback output audio data D4.

Reproducing device 20 according to this invention, outputs the audio data D4 in 16-bit format, regardless of whether it is mounted optical disk 21 normal CD-ROM or optical disk according to this invention, through the Yu the same signal processing as in the reproducing device, designed to play a regular CD. Immediately after installation of the optical disk 21 RF signal playback can be handled similarly, with the variable information recorded in the entrance area of the optical disk 21 may be reproduced and issued to the system controller, which includes a scheme 27 disc recognition.

Similar to the scheme 26 EFM-demodulation circuit 28 OCR level of the RF signal playback produces a two-level recognition playback signal obtained from the output of the circuit 24, to create a data reproduction and feeding data playback circuit 26 EFM-demodulation. The playback RF signals are obtained from the optical disk 21, according to this invention, in which the width W of the grooves is modulated by the second data D2L, so that the top or bottom value of the RF signal playback is changed by changing the width W of the grooves, as shown in figa and 4B.

If the width W1excavation for logical 1 data with improved quality equal to 0.6 μm, and the width W2excavation for logical 0 data with improved quality equal to 0.4 μm, the bottom value of the RF signal playback equal InHfor the width W1excavation of 0.6 μm andLfor the width W2excavation of 0.4 μm, as shown in figv.

Thus the m scheme 28 OCR level of the RF signal playback adjusts the threshold value of the sampling of the first data D2U for duplex detection of the RF signal playback, so that the two-level recognition is not changed even if you change the top or bottom value of the RF signal playback. Scheme 28 OCR level of the RF signal playback sequentially detects the level of the top values InHor lower values InLthe RF signal playback for sequential detection of a level of the RF signal playback in the center of each recess. On the other hand, scheme 28 OCR level of the RF signal playback corrects the detection result of the signal level by using the length of the notches of the first data D2U, obtained by a two-level recognition for normalization of the results of the detection level of the signals depends only on the width of the grooves.

Thus, when the length of the period of the recess is approximately equal to 4T or less, the RF signal playback, modulated based on the second data D2L, is an upper or lower value, variable depending on the period, so that if the length of the notches is equal to or greater than 5, the upper or the lower value is represented as a value of saturation, i.e. as the level of InL. Scheme 28 OCR level of the RF signal playback multiply the result is that the recognition result of the signal level to a predetermined constant, corresponding to the length of the notches P1in the first data D2U. Namely, the circuit 28 OCR level of the RF signal playback multiplies the detection signal to a predetermined constant, proportional to the length of the notches P1in the first data D2U, such as 1, if the length of the extraction time is not less than 5T, or constant, is inversely proportional to the length of the seizure, if the length of the grooves is not less than 4T. Namely, the level X of the RF signal playback corresponding to the length of the grooves shown in figv, normalized to the level of InL. Scheme 28 OCR level of the RF signal playback outputs the results of the DP normalization recognition of the level of signals to the circuit 30 duplex demodulation.

Scheme 30 duplex demodulation produces a two-level recognition results DP normalized detection signal based on a predetermined threshold value, for example, the average level THL between the level of InLand levelHfor playback of the second data. Namely, the circuit 30 duplex demodulation outputs a 1 or 0 as the second data, if the results of the DP normalized detection signal level below or above the threshold value THL, respectively.

The decoder 31 detection and error correction corrects errors in the data play the fight, obtained from the output of the circuit 30 duplex demodulation, and removes the interleaving of the received data to reproduce and feed on the yield of 2-bit second data D2L (D6). If the installed optical disc 21 is a conventional CD, and audio data D6 exclusive OR processed in the mixer 35, as will be explained below, instead of the 2-bit second data D2L on the output is 2-bit logical "00". If the audio data D6 treated with multiplication in the mixer 35 for a specified random number, then output sequentially receive chain 2-bit data.

The multiplexer 33 (MUX) adds 2-bit parallel second data D2L, obtained from the output of the decoder 31 detection and error correction, to the low bits of the 16-bit parallel first data D2U, obtained from the output of the CIRC decoder 29, for submission to the output 18-bit parallel audio data. It provides at the output of multiplexer 33 (MUX) audio data DAEx, providing playback of high-quality audio with a wide frequency range, provided that the optical disk 21 is an optical disk according to this invention.

The mixer 35 (MIX) handles the younger two digits of the 16-bit parallel audio data received from the output of the CIRC decoder 29, with each bit second data D2L, obtained from the output Dec the Dera 31 detection and error correction, using exclusive-OR for delivery to the output of the sound data DB with a narrow frequency range that does not contain the second data D2L. If the decoder 31 detection and error correction outputs the output data of random numbers, the mixer 35 multiplies the younger two digits of the sound data with the data of random numbers for delivery to the output of the sound data DB that does not contain the second data D2L. Scheme 27 recognition of the disk formed by the system controller when installing the optical disk 21 performs a search operation by scanning the inner and outer edges of the optical disk 21 with a high speed to obtain information relating to the number of music rooms or at the time of playback, recorded on the optical disc 21, to demonstrate the information received on the specified display. The system controller also receives from the optical disk 21 identification data ID of the disk you want to check whether the optical disk 21 normal CD-ROM or optical disk according to this invention, in accordance with the identification data ID of the disk. Scheme 27 disc recognition controls the switching contacts of the electoral circuits 25, 36 on the basis of results of recognition. If the verification reproduced data recorded in the entrance area of the optical disk 21, the circuit 27 rozpoznawanie the disk will confirm, that the installed optical disk 21 is an optical disk according to this invention, the circuit 27 disc recognition processes an RF signal playback obtained from the output of the circuit 24, with schema 28 OCR level of the RF signal to play back audio data DAEx with a wide frequency range that contains the first data D2U and the second data D2L.

If the optical disc 21 is a conventional CD, the electoral circuit 36 selectively outputs the audio data D6 obtained from the output of the CIRC decoder 29, the circuit 37 digital to analog conversions. If, on the contrary, the optical disk 21 is an optical disk that has not only the first data D2U, but also the second data D2L, written on it, according to this invention, the electoral circuit 36 selectively outputs the audio data with a wide frequency range, synthesized from the first data D2U and the second data D2L, obtained from the output of multiplexer 33.

Scheme 37 digital-to-analogue conversion converts audio data received from the output of the electoral scheme 36, from digital to analog form for submission to the output audio data SA in the form of analog signals. Thus, if the optical disc 21 is a conventional CD, the playback device 20 selectively processes the audio data D6, recip is installed with the output of the CIRC decoder 29, for sound quality, equivalent to a conventional 16-bit sound quality, specified in table 1 as CD quality sound, while if the disk is an optical disk 21, according to this invention, the reproducing device 20 selectively processes the equivalent of 18 bits audio data DAEx with a wide frequency range listed in table 1 as the quality ExCD sound, synthesized from the first data D2U and the second data D2L, obtained from the output of multiplexer 33.

In the normal reproducing device designed to play a regular CD-ROM, audio data D6 obtained from the output of the CIRC decoder 29 are transmitted to the output without passing through the mixer 35, so that the normal reproducing device reproduces the audio data recorded on regular CD-ROM and optical disk according to this invention, with CD quality sound, comparable to the quality of play normal CD-ROM.

The interface 38 (I/F) forms an input/output circuit for sending/receiving changing data using an external device to produce the sound data in the personal computer in accordance with the format SCMS (serial control copy or transmit/receive variable data in accordance with sound is new data.

Similar to the scheme 27 disc recognition, the system controller playback device 20, according to the invention, forms a block 39 recognition of the external device, and executes the authentication process to the external device through the interface 38. This authorization process block 39 recognition of the external device sends the specified data in the external device which should respond to the external device checks whether the computer is connected to the interface 38, a registered device, which prohibit the second copy of the audio data recorded on the optical disk 21 for copyright protection.

A device that protects copyrights, is such a device that has the function of preventing people from so-called second copy through re-copy all copies, once received from the data containing the audio data recorded on the optical disk. If the external device is a computer and it is necessary to make the optical disk, which copies the audio data received from the output of the reproducing device 20, the personal computer is a device that protects the copyrights, if it has the function of proper installation of IC identification data copy. This computer identified in table 1 as ospedali the second copy PC as opposed to a standard personal computer.

Electoral circuit 40 operates on the basis of the results of the recognition unit 39 recognition of the external device so that if the external device is a registered device, vospreschyon second copy of the audio data recorded on the optical disk, the electoral circuit 40 selectively outputs the output audio data received from the output of the electoral circuit 36, and Vice versa, if the external device is a device that does not have the function of preventing people from copying audio data recorded on the optical disk, the electoral circuit 40 selectively outputs the output of the sound data DB obtained from the output of the mixer 35. Thus, if the external device is a registered device, vospreschyon second copy, and the optical disc 21 is a conventional CD, the electoral circuit 40 outputs the output audio data with sound quality equivalent to 16 bits, and, if the optical disc 21 is a conventional CD-ROM or optical disk according to this invention, the output can be fed only the data corresponding to the first data D2U, with sound quality equivalent to 16 bits. Under normal CD output can be fed audio data with sound quality equivalent to 16 bits, as in the conventional device. In this case, the qualities of the sound indicated in table 1 as quality FM sound.

At the same time, if the external device is a registered device, vospreschyon repeated copying, reproducing device 20 according to this invention, provides the switching contacts of the electoral circuit 36 in the United status polling circuit 40 for supplying at output 16-bit audio data, equivalent audio data recorded on regular CD.

(3) Operation data recording and playback operation of sound data using a recording device

For manufacturing the optical disk according to this invention, using the recording device 1 shown in figure 1, the audio signal SA supplied to the recording device 1, is converted by the circuit 10 analog-to-digital conversion 18-bit audio data DA, which block 11 bitwise processing is divided into the first data D2U of the high 16 bits and the second data D2L of the youngest 2 digits. To the first data D2U of the 16 high-order bits add error correcting code with schema 12 data processing as well as in the manufacture of conventional CD-ROM. The data obtained alternate and subjected to EFM modulation. Data 14-channel bits from the data subjected to EFM modulation, as described above, are connected using the connection bits 3 canalin the x bits for education data D3 output channel. The first data D2U of the 16 high-order bits are recorded on the optical disk in the form of alternating grooves R1and grounds R1by using the laser beam L to be included and turn off data D3 output channel for the sequential exposure of the master disk 2, the light.

The first data D2U of the 16 high-order bits are recorded on the optical disk in the form of data reproduced by the device designed exclusively to play normal CD-ROM.

On the other hand, the second data D2L of the youngest 2 bits are collected in modules of 4 bits as audio data with a frequency range higher than the frequency range of the first data D2U, for the formation of a block consisting of six data (24 bits). Each block is added 4-bit parity. Each block consisting of 6 data (24 bits) and one parity (4 bits) are interleaved and interleaved data is added 4-bit parity.

Audio data D2L of the youngest 2 bits, which, as mentioned above, the added error correction code, alternate and essentially converted into serial data D4. Then the serial data is divided by grooves, so that each discharge serial data D4 corresponds to one notch. The light power of the laser beam L is switched depending on a logic level of the I serial data during exposure of the master disk 2 light. Thus, the second data D2L, which extend the frequency range playback on two LSB sequentially recorded on the optical disk by increasing the width W of the grooves, as shown in figa-2D.

When exhibiting thus the master disk 2, the light input area is formed from the data of the TOC (table of contents). Using the identification data ID of the disk, which is incorporated into these TOS, you can recognize whether the optical disk by the optical disk, in which 18-bit audio data is divided into the upper 16 bits and the younger 2 discharge, or a regular CD. Similarly, using the identification data of the IC copy, you can determine whether the optical disk of the original optical disk or an optical disk on which are once copied audio data.

When the thus prepared optical disk playback signals read by the optical head 23, amplified by circuit 24 and demodulate circuit 26 EFM-demodulation to generate data playback, which is then decoded and corrected for playback of 16-bit audio data D6.

In a reproducing device for reproducing the normal CD audio data D6 obtained from the output of the CIRC decoder 29, are issued to the external device in the form of pre is obrazovannyh analog signals. Thus, 16-bit audio data are output directly as the converted analog signals, if the playback device for playback of CDs, establish a regular CD-ROM or optical disk on which is recorded the first data D2U and the second data D2L, according to this invention.

The optical disk according to this invention, can also be reproduced using the reproducing device designed exclusively to play normal CD-ROM that provides compatibility with respect to the disk reproducing device intended solely for normal playback of the CD.

In the reproducing device 20 capable of reproducing optical disk according to this invention, the identification data ID of the disk are detected in the TOC data in the input area. On the basis of the identification data ID of the disk can be recognized whether the mounted optical disk 21 normal CD-ROM or optical disk according to this invention.

If you installed a generic CD-ROM, 16-bit audio data D6 obtained from the output of the CIRC decoder 29, through the selective circuit 36 is fed to the input circuit 37 digital to analog conversions, where zvukovoy the data is converted into an analog audio signal SA. Thus, if a conventional CD reproducing device 20, the audio signals are played back as usual with sound quality equivalent to 16 bits.

If you selected an optical disk having written the first data D2U and the second data D2L, the RF signal output from the selective circuit 25 is fed to the input circuit 28 OCR level of the RF signal, where the detected data playback of the sequence of excavation and sites. Playback data is processed similarly to the processing of data play a normal CD-ROM to obtain at the output of the CIRC decoder 29 16-bit first data D2U.

In scheme 28 OCR level of the RF signal playback recognized the top or bottom value of the RF signal playback corresponding to the middle point of the notch. On the basis of the detection signal level with the top or bottom values are adjusted to change the length of the recess and defines a detection signal DP, presents changes in the signal level depending on the width of the notches. The recognition result signal DP is divided into two levels and highlights the playback data from the second data D2L, presents two younger categories, as shown in figa and 4B. These playback data subjected to the correction of errors in the decoder 31 of detecting and correcting errors, removed the striping and the reproduced second data D2L of the two least significant bits. In the multiplexer 33, the second data D2L of the two least significant bits are attached to the first data D2U of the older 16 bits issued by the CIRC decoder 29 to create an 18-bit audio data DAEx with a wide frequency range. On the other hand, the second data D2L are multiplied or are subjected to exclusive OR operation in the mixer 35 with two younger discharges older 16-bit first data D2U to create a 16-bit sound data DB frequency range that does not contain the high-frequency range.

In the reproducing device 20, according to this invention, the audio data DAEx with a wide frequency range containing the high-frequency range, are output as analog signals using the circuit 37 digital-to-analog conversion of audio signals DAEx, providing sound reproduction with high quality, equivalent to 18-bit signals.

If the sound data is received from a regular CD, or audio data received from the optical disk according to this invention, it is necessary to exit the playback device 20 to apply an external device, via the interface 38 is the authorization process external device to verify, is the and no external device is a device, which violated the code SCMS, for example, a conventional personal computer. This decision confirms whether or not the external device is connected to the reproducing device 20, the registered device, vospreschyon second copy. If the external device is a registered device, prohibiting the second copy, the sound data with a wide frequency range that contains the first data D2U and the second data D2L, from the output of multiplexer 33 serves on the external device through the selective circuit 36, the polling circuit 40 and the interface 38. If the installed optical disk is the usual CD-ROM, 16-bit audio data output from the CIRC decoder 29 serves on the external device through the selective circuit 36, the polling circuit 40 and the interface 38. Thus, the sound data with a wide frequency range containing the high-frequency range, are served in an external device. If the external device is a registered device, prohibiting the second copy, the audio data is copied once, may not be copied again to prevent copyright infringement due to repeated copying.

If an external device connected with the playback device is a device that does not have the function of the prohibition on the Torno copy, the sound data DB, the sound quality which is degraded in several times due to repeated copying, is fed from the output of the mixer 35, the external device through the selective circuit 40 and the interface 38, so if there is a possibility of multiple copying of digital data on output are sound data, the sound quality which is degraded, and therefore cannot take advantage of the copy of digital signals whose quality does not deteriorate as a result of multiple copying.

If the external device is connected to the reproducing device 20 is a device which has the function of prohibiting re-copy, and IC identification data copy are correct, you are prepared and served on the output of the sound data with a wide frequency range containing the high-frequency range, including the first data D2U and the second data D2L, so if the audio data is reproduced by another device that is different from the playback device, according to this invention, it is possible to prevent the second copy of the audio data, for example, by using the SCMS system based on the IC identification data copying for copyright protection.

In the optical disc 21, according to this invention, in which a multitude of recesses formed the data based on the first data D2U, strain in width in the direction perpendicular to the track, on the basis of the second data D2L, and recorded as the second data D2L. Thus, if intentionally created the misconception that the external device is connected to the reproducing device 21, is a registered device having a function of prohibiting re-up, so that the output serves 18-bit audio data with a wide frequency range containing the high-frequency range, including the first data D2U and the second data D2L, it becomes difficult to capture the entire sound data including the first data D2U and the second data D2L, to ensure the possibility of preventing the copying of audio data, which ensures the reproduction of the desired wide frequency range. The result is precluded from re-copying of the audio data, providing playback with high quality, to protect the copyright owner.

Using an optical disk according to this invention, the audio data DA of the 18 bits are divided into the first data D2U of the 16 high-order bits and the second data D2L of the 2 least significant bits, and the first data D2U of 16 bits is written through repetition grooves R1and grounds R1between the notches P1, while the second data is D2L is recorded using the two least significant bits by changing the width of the recess, what is making the sound signals of high quality, providing playback for a wide frequency range containing the high-frequency range, as well as playback using the playback device designed exclusively to play normal CD. Additionally, it can prevent re-copy audio data DAEx providing reproduction with high sound quality.

Additionally, due to the recognition of whether an external device is connected to the reproducing device 20, the function of the prohibition of the second copy, and by supplying the output of the sound data containing only the first data D2U of the older 16 bits, or audio data containing the first data D2U and the second data D2L, it is possible to prevent the repeated copying of audio data DAEx, which ensure the reproduction of the audio signals of high quality.

In addition, if the reproduction of the optical disk according to this invention, by using the playback device receives the audio playback by playback of the first data D2U using the second data D2L, poor sound quality, it is possible similarly to protect the copyrights of the owner of the copy audio data is x DAEx, which provide audio playback with the desired high level of quality.

(4) the Second option run

In this embodiment, as in the previous embodiment, 18-bit audio data is divided into the first data D2U of the 16 high-order bits and the second data D2L of the 2 least significant bits, and the first data D2U of the high 16 bits are processed identically normal audio data CD and recorded using sites R1between the many hollows P1, while the second data D2L of the youngest 2 bits are recorded by changing the length of the PLexcavation P1in the direction of the track relative to the normal length.

In this embodiment, it is possible to use the above-described recording and reproducing device 1 device 20 except for the recording of the second data D2L on the optical disk by changing the width W in the direction perpendicular to the track. Thus, the recording and reproducing device 1, the device 20 are explained with reference to figure 1, respectively, figure 3.

In the recording device 1 used in this case, the circuit 12 data adds error correction code to the second data D2L of the least significant bits and combines the resulting data to create a chain of serial data, the spacecraft is in the first embodiment, described above. Scheme 12 data creates and outputs the data D4 to control the length of the recess in which the respective bits of the serial data are sequentially assigned to the period of time from the time when the logic level of the data D3 of the channel switches to a logical level corresponding to the recess, and the time to switch to a logic level corresponding to the space.

Data D3 channel with the output of the circuit 12, the data is served to the control circuit 13, which generates the control signal S3, which rapidly increases in accordance with the logical level of the data D3 of the channel. At this time, the control circuit 13 actuates monovibrator using data D4 to control the length of the notches and generates the control signal S3 with the resulting clock signal and the data D3 of the channel so that the length of the notch varies depending on the logic level of the data D4 to control the length of the recess, and the time period significantly less than 1/2 of the period of the data D3 of the channel, as shown in figa-5D used as the unit. Changing the length of the recess is selected so as to provide a signal processing RF playback with sufficient tolerance phase even using the playback device, designed exclusively for the normal playback whom the act-ROM. In this embodiment, the change in the length of the recess is selected so that the length of the grooves was changed to ±0.1 µm, depending on the data D4 to control the length of the recess, so that the length of the notch is increased or decreased on the borders of the cells of the bit relative to the reference length.

Due to the small changes of length RL1recorded notches in the direction of the track based on the second data D2L relatively normal length RLon the optical disk record and the second data D2L with a higher frequency range than the frequency range of the first data D2U.

When installed in a playback device and playback of the optical disk 21 having recorded therein the second data D2L using small changes in the length of Plin the direction of the track relative to the normal length RLthe RF signal playback recognize two levels with a predetermined threshold value, and the period of time corresponding to P1in which the signal level is reduced, or the period of time corresponding to P1in which the signal level rises, changes depending on the logic level of the data D4 to control the length of the notch. Conversely, if the playback signal level or logic level two-level signal, obtained by sequential sampling of increasing or buck the Osia front duplex signal, change the signal level or logic level during the time period corresponding to the rear edge of the recess R1relative to the clock pulses of the channel as a reference signal, depending on the logic level of the data D4 to control the length of the notch. The length of the recess R1in the direction of the track on the optical disk 21 slightly change relatively normal length by measuring the time a two-level signal or the logical level of the playback signal with the signal clock pulse as a reference signal for reproducing the second data D2L.

Based on this principle detection circuit 28 OCR level of the RF signal playback and circuit 30 duplex demodulation recognize two levels of the RF signal playback using a clock channel signal RF playback, as in the diagram EFM-demodulation in the reproducing device designed exclusively to play normal CD-ROM as a reference signal to create a data playback with simultaneous separation of the RF signal reproduction of the second data D2L, providing playback of a wide frequency band containing the frequency range that is higher than the RF signal playback. Namely, the circuit 28 OCR level of the RF signal playback DV is ichno encodes the RF signal playback at a given threshold value to generate a two-level signal and supplies the measurement results of time duplex signals in the circuit 30 duplex demodulation. As an alternative solution, scheme 28 OCR level of the RF signal playback detects the level of the RF signal playback or logical level duplex signals using as a reference signal of clock channel signal and as the recognition result gives the result of recognition DP signal or the recognition result of the DP logic level during the time period corresponding to the rear edge of the notch.

Scheme 30 duplex demodulation checks the output circuit 28 OCR level of the RF signal playback for detecting data playback of the second data D2L, containing the high-frequency range.

Using the optical disc 21, in accordance with this invention, it is possible to achieve results similar to the results described above for the first variant execution, if, through small changes in the length direction of the track grooves recorded on the basis of the first data D2U, relatively normal length, to record the second data D2L with a frequency higher than the frequency range of the first data D2U. By changing the length of the grooves in the track direction by increasing/decreasing the length to the point corresponding to the bit cell boundary, can be reduced to a practically sufficient level, the effect of jitter during playback is edenia.

(5) the Third option of the

Using the optical disk 21 according to this variant implementation of the invention, an 18-bit audio data is divided into the first data D2U of the 16 high-order bits and the second data D2L of the 2 least significant bits, and the first data D2U of the high 16 bits are treated as normal CD-ROM and stored in the form of a chain of many hollows P1as in the above-described embodiment, while the second data D2L of the 2 least significant bits are recorded by changing the depth of the PD1excavation P1with respect to the normal depth of the PD.

In the recording device 1 used for the preparation of the optical disc 21, the photoresist is chosen so that the degree of exposure light was changed mainly in the direction of the depth of the notches due to the change of the light power of the laser beam L.

By recording the second data D2L of altering the depth of the grooves formed on the optical disk 21, a relatively normal depth, change the top or bottom value of the signal depending on the second data D2L when reproducing the data recorded on the optical disk 21, as in the first embodiment described above. In this embodiment, the second data D2L, recorded in a change in the depth of the recess from the normal depth of the PDto g is ubina P D1on ± 0.01 µm, so that even with this change, the top or the bottom value of the signal of the sound data corresponding to the first data D2U of the older 16 bits, will be reproduced with sufficient tolerance in amplitude reproducing device used exclusively for normal playback of the CD.

If the second data D2L is recorded in the form of changing the depth of the recess R1relatively normal depth RDthe playback signals obtained during reproduction of the optical disk 21, change the upper or lower value in accordance with the second data D2L, as in the first embodiment, so that it is possible to selectively process the audio data DAEx, synthesized from the first data D2U and the second data D2L, issued at the output of multiplexer 33 reproducing device 20 according to this invention, is shown in figure 3, to implement audio playback with high quality (sound quality ExCD), with a frequency range equivalent to 18 digits.

(6) the Fourth embodiment of the

In this embodiment, the optical disk, similar to the above described first alternative implementation, the first data D2U, consisting of 16 high-order bits 18-bit audio data are treated the same way as in a standard CD, and write in the form m is Oresta grooves P 1, while the second data D2L consisting of 2 least significant bits, are recording by changing the width W3grooves perpendicular to the length of the notches P1in the direction of the track. By changing the width of the excavation in accordance with the second data D2L selectively use the notch length, more of a given length, such as the notch, which is not shorter than 5T, and the front and rear halves of the recess R1relative to the center of the P0assigned to the 1-bit data to change the width of W4the notches, as shown in figa and 7B.

The optical disk according to this variant execution, similar to the optical disc of the first variant of the run except for differences in the time modulation of the width W3the notches. Thus, the optical disk according to this variant execution, can be produced using the recording device 1 shown in figure 1, while the optical disk can be played back using the playback device 20, shown in figure 3.

In the recording device 1 error correcting code is added to the second data D2L, consisting of 2 least significant bits, and the resulting data is alternated for the formation of a chain of serial data with schema 12 data processing, as in the above-described first embodiment. Scheme 12 processing of data is x controls the logic level of continuous excavation P 1in the data D3 output channel detection time corresponding to the recess R1having a length not less than the specified length, for example 5T or more. This scheme 12 data sets 1-bit data of the front and rear halves of the notches in the track direction, having a length not less than the specified length, to create and supply the output data D4 of the control light power.

In the reproducing device 20 for playback from an optical disc shown in figure 3, the RF signal playback is recognized on two levels with the quantum signal channel, recreated with the help of the RF signal playback as a reference signal, by signal processing similar to the processing performed by the circuit EFM-demodulation in the reproducing device designed exclusively to play normal CD-ROM for education data playback served in scheme 26 EFM-demodulation.

Scheme 28 OCR level of the RF signal playback detects in the data playback time increase or decrease the signal level is greater than the specified period for detection of the notches P1, which recorded the second data D2L with a frequency range higher than the frequency range of the first data D2U. Then, the circuit 28 OCR level of the RF signal playback found over RF signal playback within a specified time in the front and back halves of the recess in the direction of the track relative to the center of the length of the recess R 1. Scheme 28 OCR level of the RF signal playback outputs the result of detection DP level of the RF signal playback to the input of the next circuit 30 duplex demodulation, which validates the results of the schema 28 OCR level of the RF signal playback for detecting data playback of the second data D2L of the high-frequency range.

Using an optical disk according to this variant execution, results similar to the above-described first variant implementation, if the second data D2L, consisting of Junior 2 bits are recorded by changing the width W4excavation P1with length not less than the specified length, the front and rear halves which is assigned to one category.

(7) the Fifth embodiment of the

In this embodiment, the optical disk, similar to the above described first alternative implementation, the first data D2U, consisting of 16 high-order bits 18-bit audio data are treated the same way as in a standard CD, and record as many notches P1, while the second data D2L, consisting of 2 least significant bits, are recording by changing the depth of the PD1excavation P1recorded on the optical disk, relative to its normal depth of the PD. As excavation P1the normal is ing the depth of which change in accordance with the second data D2L, selected notch with length not less than the specified length, for example 5T or more, and each depth in the front and back halves of the recess R1relative to the center is assigned to 1 category.

The optical disk according to this variant execution, can be produced using the recording device 1 shown in figure 1, and play back using the playback device 20, shown in figure 3.

To write the second data D2L on the optical disk according to this variant execution, using the recording device shown in figure 1, control the light power of the laser beam L, while the depth of the PD1excavation P1change relatively normal depth using selective exposure light in the direction of depth, which is ensured by the choice of photoresist.

When playing back an optical disc using the playback device, shown in figure 3, the audio data DAEx, synthesized from the first data D2U and the second data D2L, you can selectively processed to provide audio playback with high quality (sound quality ExCD) with a frequency range equivalent to 18 digits.

(8) the Sixth embodiment of the

In this embodiment, the optical disk, the first data D2U, consisting of 16 senior, razreda the 18-bit audio data, treated as a regular CD, and record as many notches P1, while the second data D2L, consisting of 2 least significant bits, are recording by changing the width W of the recess R1in the direction perpendicular to the track. As excavation P1, the width of which change in accordance with the second data D2L, use the notch P1with length not less than the specified length, for example the notch P1with a minimum length of 5T or more, and the second data D2L record by changing the width from the front to the back half of the excavation P1relative to the center in the direction of the track.

As shown in figa and 8B, the recess R1form so that if the logic level is a logic "1", the width W6excavation P1the second data D2L is increased from the mid-point of the length of the recess R1in the direction of the track, and Vice versa, if the logic level is a logic "0", the width W5excavation P1the second data D2L is reduced from the middle point of the length of the recess R1in the direction of the track.

In the recording device 1 for recording data on an optical disk according to this variant implementation, the second data D2L, consisting of 2 least significant bits add error correcting code and the resulting data is alternated for education chain pic is dovetailing data. In addition, the circuit 12, the data processing controls the logic level of the consecutive bits in the data D3 output channel detection time corresponding to the recess P1, having a length not less than the specified length, for example not less than 5T. This scheme 12 data sets 1-bit data of each of the front and rear portions of the notches P1in the direction of the track, having a length not less than the specified length, to create and supply the output data D4 of the control light power.

In the reproducing device 20 for playback from an optical disc shown in figure 3, scheme 28 OCR level of the RF signal playback performs signal processing similar to the processing performed by the circuit EFM-demodulation in the reproducing device designed exclusively to play normal CD-ROM, to implement a two-level recognition of the RF signal playback via the clock channel signal obtained from the RF signal playback as the reference signal for education data playback served in scheme 26 EFM-demodulation.

Scheme 28 OCR level of the RF signal playback defines data reproduction time at which the signal level is increased or decreased in a time period greater than a specified period, for which the detection of the notches P 1, which recorded the second data D2L with a frequency range higher than the frequency range of the first data D2U, to determine the level of RF signal playback at specific points in time before and after the center of the length of the recess R1in the direction of the track. Scheme 28 OCR level of the RF signal playback outputs the result of detection DP level of the RF signal playback to the input of the next circuit 30 duplex demodulation, which validates the results of the schema 28 OCR level of the RF signal playback for detecting data playback of the second data D2L of the high-frequency range.

Using an optical disk according to this variant execution, results similar to the above-described first variant implementation, if the second data D2L, consisting of Junior 2 bits are recorded by changing the width W5, W6grooves distributed on the front and back half of the excavation P1in the direction of the tracks with length not less than the specified length.

(9) the Seventh embodiment of the

In this embodiment, the optical disk, similar to the above described first alternative implementation, the first data D2U, consisting of 16 high-order bits 18-bit audio data are treated the same way as in a standard CD, while the second is the data D2L, consisting of 2 least significant bits, are recording by changing the depth of the PDexcavation P1recorded on the optical disk. As excavation P1, the depth of which change in accordance with the second data D2L, use the notch having a length not less than the specified length, for example the notch with a length of not less than 5T, and the second data D2L record by changing the depth from the front to the rear halves of the recess relative to the center in the direction of the track. The notches of the second data D2L sequentially form so that if the logic level is "1", the depth of the PD1excavation P1more and more mid-length of the notches in the track direction, and Vice versa, if the logical level is "0", then the depth of the PD1excavation P1becomes smaller from the middle of the length of the recess R1in the direction of the track, as shown in Fig.9.

The optical disk according to this variant execution, can be produced using the recording device 1 shown in figure 1, and play back using the playback device 20, shown in figure 3.

To write the second data D2L on the optical disk according to this variant execution, using the recording device shown in figure 1, control the light power of the laser beam L, while the depth of the PD1you the MKI P 1change relatively normal depth using selective exposure light, which is ensured by the choice of photoresist.

When playing back an optical disc using the playback device, shown in figure 3, the audio data DAEx, synthesized from the first data D2U and the second data D2L, you can selectively processed to provide audio playback with high quality (sound quality ExCD) with a frequency range equivalent to 18 digits.

(10) the Eighth embodiment of the

In this embodiment, the optical disk, the first data D2U, consisting of 16 high-order bits 18-bit audio data are treated the same way as in a standard CD, and record in the form of a chain of many hollows P1, while the second data D2L record by changing the length of the notch tracks formed from a variety of grooves R1recorded on the optical disk, and areas bounded by these grooves R1relative to their normal length in the direction of the track on the left and right sides from the center of T0the track, as shown in figa and 10V.

Notch, the length of which change based on the second data D2L is a recess, the length of which is not less than the specified length, for example the notch not less than 5T. The second data D2L record by changing Shi the ins grooves from one half to the other half of the notches along the track relative to its center. Namely, the recess R1, which recorded the second data D2L, has a length that is adjustable along the track on the left and right sides of the recess R1, i.e. the inner and outer edge of the optical disk.

The notches of the second data D2L is formed sequentially so that if the logic level is "1", then the inside edge of the recess is longer in the direction of the track than the outside edges, as shown in figa, and Vice versa, if the logical level is "0", then the outside edge of the recess is longer in the direction of the track than the inside edge, as shown in figv.

In a recording device for recording second data D2L together with the first data D2U on the optical disk, the optical disk is irradiated with two laser beams L, and these two laser beam L on and off the respective light modulators and two laser beam generated by the light modulators, fall on the master disc 2 and are reduced by the lens 9 of the lens so that the inner edge and the outer side edge of the recess R1exhibited light in the direction of the track.

A recording device configured to record on the optical disk according to this variant execution, not only the first data D2U, but the second data D2L, adds error correction code to the second data D2L and alternates resultin the matter of data for the formation of a chain of serial data. The recording device also enables and disables two light modulator using data D3 output channel formed of the first data D2U, consisting of 16 high-order bits, and using the chain serial data.

The playback device has a capability to playback from an optical disc on which a recording device is recorded not only the first data D2U, but also the second data D2L, illuminating light beam of the optical disk and receives the backward light beam reflected from the optical disk, by using a customized photodetector provided in the optical read head.

As shown in figure 11, the photodetector 82 is divided in the track direction in accordance with the direction of travel of the track on the optical disk and in the direction perpendicular to the track, with the formation of four parts A-D of the photodetector. Reverse light beam reflected from an optical disc, forms a light spot 88 around the point of intersection of the lines separating the four parts A-D of the photodetector, serving as a center.

The photodetector 82 generates output signals SA-SD, discovered four parts A-D of the photodetector. Reproducing device having an optical read head, comprising the photodetector 82, and has a capability to playback optical is on disk, according to this invention, processes the output signals SA-SD, issued four parts A-D of the photodetector, converting current to voltage, and performs processing to generate a RF signal playback etc Is a playback device sums the output signals SA-SD, issued four parts A-D of the photodetector, the first circuit 83 addition to generate a RF signal playback and processes the RF signal playback as well as normal reproducing device used exclusively for playing a CD, to play the first data D2U, consisting of 16 high-order bits, written as chains from a variety of fill.

Reproducing device according to this invention, includes in addition to the first scheme of addition of the second and third circuits 84, 85 addition, as shown in figure 11. These second and third circuits 84, 85 adding the summed output signals SA and'SV issued by the first and second parts of SA, AT the photodetector, and the output signals SC and SD, issued by the third and fourth parts of SC, 3D photodetector, for education the results of adding SA+AT and SC+SD, which are then subjected to subtraction in the scheme 86 subtraction. Due to such processing signal reproducing device for reproducing an optical disc according to this invention, ozdaet signal RFD playback (SA+AT-SC-SD), the level of which varies depending on the shape of the notches P1the shape of the inner edge of which is changed, and the shape of the recess R1that form the sides of the outer edge of which varies among the grooves, the length of which is changed in the direction of the track on the left and right sides of the track based on the second data D2L, consisting of 2 least significant bits. If the signal RFD reproduction change greater than the specified value, the signal RFD reproduction is recognized on two levels at the point in time at which the signal RFD reproduction is formed by the area of the recess R1with different form on the sides of the inner and outer edge, and is divided into two levels, the signal is processed to generate data reproduction based on the second data D2L and having a higher frequency range than the frequency range of the first data D2U.

In this optical disc, the audio data DAEx, synthesized from the first data D2U and the second data D2L, selectively processed to provide audio playback with high quality with a frequency range equivalent to 18 digits.

(11) the Ninth embodiment of the

In this optical disk, the first data D2U, consisting of 16 high-order bits 18-bit audio data are treated the same way as in a conventional CD-ROM for education chain from the centre of the VA grooves R 1that record. The second data D2L record by changing the lengths of the sets of grooves R1and grounds R1recorded on the optical disk in the direction of the left and right tracks, relative to the center of the T0track, relatively normal length based on the second data D2L. Site R1formed between the grooves R1recorded on the optical disk. In this case, the length of the inner and outer edges of the notches P1and grounds R1in the direction of track changes in a special channel bit. In this example, a special channel bits are placed in the Central bit of the BC1connecting the bits InCto change the shape of the recess R1and forms of site R1using a concatenation of bits on the inner and outer sides of the edges of the notches on the left and right sides from the center of T0track. 14 channel bits between the connecting bits InCthat are allocated to the first data D2U, consisting of 16 high-order bits that do not affect the recording younger 2 bits of the second data D2L, and they can be reproduced with a tolerance phase and tolerance amplitude comparable with tolerances in conventional CD-ROM.

For recording the first data D2U and the second data D2L to an optical disk recording device 1 turns on and off three of the laser beam received by p is selenia laser beam L at the output of the recording laser 5, shown in figure 1, using the corresponding light modulators 6, and brings three of the laser beam obtained from the outputs of the light modulator 6 on the master disk 2 by means of a lens 9 of the lens. These three light beams placed in the center of each recess in the center of the T0track with inner and outer sides of the optical disk on the left and right sides from the center of T0track.

The recording device 1 also turns on and off the laser beam is placed in the center of the notch using data D3 output channel generated by the first data D2U, consisting of 16 high-order bits, for recording the first data D2U, consisting of 16 high-order bits, by repeating chains of many hollows P1.

The recording device also adds error correction code to the second data D2L and rotates the result data for the formation of chains of serial data, and outputs a laser beam aimed at internal or external side of the excavation P1depending on the logic level of the chain of serial data during the main bits BC1in the data D3 output channel, if the notch P1related to the first data D2U, formed on both sides of the connecting bits InCas shown in figa, the master disc 2 exhibit light so that depending on the logical level, the I of the first data D2U width W 21excavation P1noticeable changes in the direction of the inner and outer sides in the part relating to the Central bit BC1connecting the bits InCas shown in FIGU-1 and 12B-2.

If excavation P1passes to the Central bits of the BC1connecting the bits BC1the master disc 2 is exhibited light so that the width W21excavation P1increases towards the inner or outer sides at the rear end of the recess P1corresponding to the Central bit BC1connecting the bits BCrelative to the direction of the track, depending on the logic level of the second data D2L, as shown in figs-1 and 12C-2. If excavation P1begins with a centre InC1connecting the bits InCthe master disc 2 exhibit light so that the width W21excavation P1increases towards the inner or outer sides of the front end of the recess P1corresponding to the Central bit BCconnecting the bits InWithrelative to the direction of the track, depending on the logic level of the second data D2L, as shown in fig.12D-1 and 12D-2.

If the Central bit InC1connecting the bits Bcsite R, the master disc 2 exhibit light so that depending on the logic level of the second d is the R D2L form the notch P C1having a width corresponding to the increased width W21excavation P1as shown in figa-1 and 12E-2.

The playback device has a capability to playback from an optical disc having written the first data D2U and the second data D2L, as described above, performs a custom split-level detection signal RFD reproduction, obtained using the photodetector 82, shown at 11, while scanning the light beam emitted by the optical read head, the Central bit of the BC1connecting the bits InCto create a data reproduction with a frequency range higher than the frequency range of the first data D2U obtained from the second data D2L, consisting of 2 least significant bits.

With this optical disk is also possible to provide audio playback with high quality (sound quality ExCD) with a wide frequency range, equivalent to 18 discharges through selective processing of the audio data DAEx, synthesized from the first data D2U and the second data D2L.

In addition, when installing the special channel bits in the connection bits InCand when placing them as the Central bits of the BC1connecting the bits InWithon 14 channel bits between the connecting bits InWithin to the which distributed the first data D2U, consisting of 16 high-order bits 18-bit audio data is not affected by recording the younger 2 bits of the second data D2L, and they can be reproduced with a tolerance phase and tolerance amplitude comparable with tolerances for normal CD-ROM.

(12) the Tenth embodiment of the

Using an optical disk according to this variant perform as well as using an optical disk according to the above-described respective variants of execution, the first data D2U of the 16 high-order bits 18-bit audio data is processed, as in the case of a conventional compact disc, and record as many notches. On the other hand, the second data D2L of the 2 least significant bits are recorded by moving the front and rear recesses P1, relative to the direction of the track, in the direction perpendicular to the track from the centre of T0track. If in this embodiment, the optical disk logical level of the second data D2L is a logical "0", the front side of the recess P1shifts in the direction of the outer edge of the optical disc perpendicular to the direction of the track from the centre of Taboutthe track center of the notch in the longitudinal direction of the recess as the boundary, while the rear end of the excavation P1shifts in the direction of the inner edge of the optical disk from the center of the T 0track perpendicular to the track direction, as shown in figa. On the other hand, if the logic level of the second data D2L is a logical "1", the front side of the recess P1shifts in the direction of the inner edge of the optical disc perpendicular to the direction of the track from the centre of T0the track center of the notch in the longitudinal direction of the recess as the boundary, while the rear part of the recess R1shifts in the direction of the outer edge of the optical disk from the center of Tabouttrack perpendicular to the direction of the track.

For manufacturing an optical disc, on which the front and rear of the notches P1formed on the basis of the first data D2U, shifted in the direction perpendicular to the track from the centre of T0paths, the radiation direction of the laser beam L reject using the light deflector 8, located on the optical path of the laser beam L at the output of the light modulator 6 recording device 1 shown in figure 1, during the time when the notch P1shifted via the second data D2L, consisting of 2 least significant bits. The light modulator may be an electro-acoustic optical element.

At this time, the second data D2L modulate phase for actuation of the light modulator 6 in order to separate one of the bits of the second the data D2L on two channels, logic levels are established in accordance with the displacement of the notches P1as shown in figa and 13B.

The amount of displacement of the notches P1in the direction perpendicular to the track, set so that the offset indentations P1does not affect the position control of the read head when playing, and so that the first data D2U of the high-order bits are reproduced with sufficient tolerance phase and sufficient tolerance amplitude.

When playing back an optical disc, the second data D2L, recorded by offsetting the notches P1reproduce using signal RFD reproduction, obtained from the photodetector 82 provided in the optical read-head playback device, shown at 11, or with the use of error signals for tracking the path.

Using an optical disk according to this variant execution, even in the case where the notch P1formed on the basis of the first data D2U, shifted in the direction perpendicular to the track, so that the width of the grooves is different in the front and rear parts in the longitudinal direction of the recess relative to the direction of the track, located in the middle of the hollow center of T0track, using the second data D2L, consisting of 2 least significant bits, it is possible to synthesize the first is data D2U and the second data D2L to provide audio playback with high quality (sound quality ExCD) with a wide range of frequencies, equivalent to 18 digits.

(13) the Eleventh embodiment of the

If the optical disk according to this invention, to change the length of the notches P1in the direction of the track relative to its normal length for recording the second data D2L, the two edges of the notches P1always present in the code word consisting of 14 channel bits, which corresponds to 1 byte (8 bits) of the sound data when the rules EFM-modulation, as shown in figure 5. These rules EFM-modulation based on the format of conventional CD-ROM. In this case, the second data D2L of the 2 least significant bits can be allocated in each code word.

At the same time, if a 1-bit second data D2L is assigned one notch P1due to the width of the notches P1or due to the depth of the notches P1then the two notches P1not necessarily correspond to a single code word depending on the rules EFM-modulation. In this case, it is difficult to distribute the second data D2L of the 2 bits in each code word.

In this case, the second data D2L distribute excavation P1so that the first data D2U of the high-order bits and the second data D2L of least significant bits associated with each other.

In particular, in plain CD-ROM connecting channel bits and code words sequentially ordered frames in channel clock pulses, so that it is jdy frame formed of 588 channel clocks. The frame of the CD is formed by connecting these frames. Thus, in the frame containing 588 channel clocks, or in the frame of the CD the second data D2L is sequentially allocated to the respective recesses, so that the first data D2U of the high-order bits and the second data D2L of the least significant bits fit together.

In the recording device for preparing an optical disc, the second data D2L is recorded in the buffer in an amount corresponding to at least 588 channel clock pulses or the frame of the CD, and consistently produce at the output during the formation of the grooves for changing the normal length of the notches in the direction of the track. Using the playback device also records in the buffer reproduced second data D2L using the sync frame or sub code, and generates output synchronously with the corresponding first data D2U of the high-order bits for processing.

With this optical disk, in which the first data D2U of the high-order bits are divided into blocks to write, and the second data D2L of the least significant bits are distributed in the grooves of the corresponding block, the second data D2L of the youngest discharge record, even if the two notches do not necessarily correspond to each code word according to the rules of modulation, and it is possible to synthesize the first data D2U and whoredonna D2L to provide audio playback with high quality (sound quality ExCD) with a wide range of frequencies, equivalent to 18 digits.

(14) the Twelfth embodiment of the

In the optical disk according to this variant implementation, a separate code word of the 14 channel bits is divided into a cell boundary of the specified bits and the second data D2L recorded by offsetting the front and rear grooves perpendicular to the direction of the track from the centre of T0the track, as shown in figa and 14C.

To write the second data D2L, consisting of low-order bits, the notch P1divided into front and rear in the direction of the track center in the given bit cell in the longitudinal direction of the grooves and each one bit of the second data D2L distribute the divided zone, while the second data D2L, consisting of 2 bits, is placed in each code word.

If an optical disc two notches P1distributed, for example, in the code word so that the corresponding second data D2L is distributed in each code word, it is necessary that one of the notches P1no longer deformed.

With this optical disk in which a code word is divided at the boundary of the cell of the specified bit, and the front and back of each excavation P1at the boundary of a bit cell is shifted in the direction perpendicular to the track on both sides of the center of T0tracks, many bits of the WTO who's data D2L, consisting of the least significant bits, can be distributed in a single slot and a corresponding increase recording density of the second data D2L.

In addition, each code word can be associated with the second data D2L for the corresponding simplify the process of recording and reproducing systems.

(15) Other embodiments of the

In the preceding part of the description of the second data D2L, consisting of the least significant bits, are recording by changing the width, the depth of the notches, the length of the notches in the track direction, or the width of the notch perpendicular to the direction of track, various deformation of the inner and outer edges of the notches in the direction of the track, or different offsets front and rear of the recess relative to the direction of the track, in the direction of the inner and outer edges of the disk. However, the invention is not limited to these options, run because you can use these options perform in combination. Due to this, you can increase the amount of data contained in each recess, while the error correcting code is added to the second data D2L, can be intensified, and the recording and/or reproduction of such data may have improved reliability. In addition, you can record audio data, enhanced by the number of bits or the amount of data. In this case, the WTO is haunted data D2L, associated with the code word can be divided into many bits to simplify processing in the recording and reproducing systems.

In the preceding part of the description of the second data D2L, consisting of the least significant bits, are recording by changing the width, the depth of the notches, the length of the notches in the track direction, or the width of the notches in the direction perpendicular to the tracks, various deformation of the inner and outer edges of the notches in the direction of the track, or different offsets front and rear of the recess relative to the direction of the track, in the direction of the inner and outer edges of the disk. However, the invention is not limited to this configuration and can be used to write on many parameters. Namely, compared with Figo and 13B can be seen that if the notch P1having a front side and a rear side towards the outer and inner edges of the disc relative to the middle part of the recess in the longitudinal direction as a boundary, respectively, from the center of T0the tracks in the direction perpendicular to the track, the recess R0that is not displaced, as shown in figv, and the notch P1having a front side and a rear side towards the inner and outer edges of the disc relative to the middle part vyamk is in the longitudinal direction as a boundary, accordingly, from the centre of T0the tracks in the direction perpendicular to the track, to combine together, it is possible to provide recording a few bits of the second data D2L, consisting of the least significant bits, using three parameters. Even when such entry by using multiple parameters, multiple bits of the second data D2L can be distributed in the code word to simplify processing of the respective recording and reproducing systems.

In the preceding part of the description of the error correcting code is added to the second data D2L, consisting of 2 least significant bits, in accordance with the processing of the first data D2U, consisting of 16 high-order bits, and the resulting data is alternated. However, this invention is not limited to this configuration, since the second data D2L can be processed and recorded by processing other than the above.

In the preceding part of the description when writing the second data D2L, consisting of younger categories, by changing the width, the depth of the notches, the length of the notches in the track direction, or the width of the notches in the direction perpendicular to the tracks, various deformation of the inner and outer edges of the notches in the direction of the track, or different offsets front and rear of the recess relative to the direction of the track, directed and inner and outer edges of the disk, the second data D2L is modulated in phase. However, phase modulation can also be used when writing the second data D2L on the basis of a difference between the inner and outer edges of the notch.

In the preceding part of the description of the inner and outer edges of the notches shift in the Central bit of the connecting bits as the special channel bits. However, this invention is not limited to this, since, as the special channel bits, you can use the first or last bit of the connecting bits or one of 14 channel bits, which are distributed the first data D2U. In this case, the set of bits of the second data D2L can be assigned a separate connection bit or single bit of 14 channel bits, respectively.

In the preceding part of the description of the inner and outer edges of the notches shift in the Central bit of the connecting bits as the special channel bits. However, this invention is not limited to this, since the second data D2L can be recorded by changing the width or depth of the recesses on the special channel bit. In this case, the second data D2L can be assigned a separate connection bat or one of the many bits of 14 channel bits.

In the preceding part of the description of the second data D2L, consisting of 2 least significant bits 18-bit Yes sound is different, write with ECC using grooves obtained on the basis of the first data D2U, consisting of 16 high-order bits. However, this invention is not limited to this configuration, since the entire error correction code or part thereof may be distributed in the sub-code.

In the preceding part of the description 18-bit audio data to record with the division on 16 high-order bits and 2 LSB. However, this invention is not limited to this option is run, since it can be widely applied in the case of separation of the sound data with different number of bits in senior and Junior categories.

In the preceding part of the description of the audio data to record with grooves and pads. However, this invention is not limited to this configuration, because it can be widely applied to a magneto-optical disk or the recording and/or reproducing device for the magneto-optical disk for recording audio data through repetition marks and pauses.

The invention also is not limited to recording the audio data on the optical disk, since the present invention can be widely applied for recording video data on the optical disk.

(16) Additional embodiments of the

In the preceding part of the description of the second data D2L record by changing the DL who have cut the track, formed from a variety of fill P1corresponding to the first data D2U and sites R1formed between these grooves, along the entire length of the track in her direction and by changing the width of the grooves in the direction perpendicular to the track, and by changing the width of the cut from the middle part towards the front or rear end of the recess. As an alternative solution, the second data D2L can be recorded by setting the length of the notches P2in the middle part of the recess in the direction of the T tracks with a width of W11that is the normal width W12as shown in Fig. Also, the second data D2L can be recorded due to the formation of the recess 51 with a smaller depth than the normal excavation P1as shown in Fig.

Excavation P2the second data D2L, recorded by changing the width W11in the middle part of the recess relative to the direction of the track, in the direction perpendicular to the direction T of the track has a duration of not less than 5T, while the space R1the second data D2L, recorded through education of the recess 51 with a smaller depth than the normal excavation P1may also have a duration of not less than 5T.

By recording the second data D2L using the notches P2with a duration of not less than 5C to read a second data 2L with a sufficient level of recognition while preventing reduction of the detection level of the first data D2U, recorded with the notches P2.

Below is a description of the play, i.e. reading, the second data D2L.

The signal RF playback output circuit 24 in figure 3 and corresponding to the recess P1having a normal width W12and the area R1not provided with a recess 51 is a signal RF1 playback with normal amplitude, while the playback signal corresponding to the recess R2having a narrow width W11and the area R1with the recess 51 is a signal RF2 playback, smaller in amplitude than the signal RF1 playback.

In this embodiment, in which the length of the recess R2and grounds R1carrying the second data D2L, have a duration of not less than 5T, there is no need to normalize the RF signal playback in scheme 28 OCR level of the RF signal playback in figure 1, so that the RF signal playback from the circuit 24 is fed directly to the circuit 30 duplex demodulation. Scheme 30 duplex demodulation has two threshold values, for example a threshold T2as an intermediate level between the signals RF1, RF2 playback corresponding to the area R1,with the recess 51, and the space R1not having the recess 51, and a threshold T3as Prohm is filling level between the signals RF1, RF2 playback corresponding to the recess of the P1, respectively, P2. Scheme 30 duplex demodulation detects the RF signal playback on the output of the circuit 24 on the basis of the threshold values T2to reproduce the second data D2L. Scheme 30 duplex demodulation detects the RF signal playback on the basis of the threshold values T3to reproduce the second data D2L, recorded in the recess of the P2.

(17) Additional embodiments of the

In the above-described embodiments, execution of the second data D2L recorded as audio data frequency range as additional data to the first data D2U, consisting of 16 high-order bits, the audio data DA in the form of 18-bit parallel digital data. However, data related to the first data D2U, is used as the second data D2L.

For example, if the first data D2U are 2-channel audio data, the second data D2L can be audio data forming the multi-channel audio data as part of the first data D2U. Used in this case, the second data D2L data are applied to the input of the loudspeaker located in the center front, or loudspeaker, located above the head of the listener, or data applied to the input of the left and right loudspeakers, located the x in the back.

The second data D2L data can be recorded as multi-channel audio data independently of the first data D2U.

If the first data D2U sound data are musical numbers that contain the words, the second data D2L is recorded as the data corresponding to the instrumental part of the music rooms. By recording the first data D2U and the second data D2L is possible to selectively reproduce only the instrumental part of the musical numbers, including words, realizing thereby a mixed audio playback.

As the second data D2L data can be written to copyright protection, impose restrictions on copying the first data D2U, recorded as digital data.

If the first data D2U encoded, and the second data D2L is recorded as the key data for decoding the first data D2U, it is possible to order the free reproduction or copying of the first data D2U for secure operation associated with the first data D2U.

The second data D2L can be control data, indicating that the recorded auxiliary data related to the first data D2U, compressible signals.

The second data D2L can be written compressible signals with changing formats in the zone, completely independent of the zone in which you want to record is that the data D2L.

In the area of the inner edge of the optical disc 101, which recorded the second data D2L together with the first data D2U, provided input area 102, in which the recorded data TOC (table of contents)indicating the content data recorded on the optical disk 101. Area 103 records the first data provided from the outer edge of the input area 102 and the area 104 of the recording of the second data is provided on the side of the outer edge of the zone 103 records the first data.

In the area of 103 records the first data record audio data in the format of a normal CD, while in the area 104 of the recording of the second data record audio data, ensuring implementation of the audio playback with the best audio quality. These audio data includes audio data with high-frequency range that is not contained in the audio data recorded in the area 103 records the first data compressed signals provided by various means of signal compression.

By recording data encoding as the second data D2L, you can order free reproduction or copying data recorded in the area 104 of the recording of the second data, to ensure reliable protection, depending on the second data D2L.

In this case, the data for decoding encoded data record in the input area 102. These data are recorded by the Fund is Mirovaya many notches, formed on the basis of the TOC data, based on the data used to decode the encoded data.

The data recorded in the area 104 of the recording of the second data does not necessarily have to be a block of audio data as different data, such as data forming the multi-channel audio data can be recorded together with the data recorded in the recording area of the first data.

By recording auxiliary data in the grooves formed on the basis of the data recorded in the area 103 records the first data, it is possible to ensure the high quality of the data recorded in the area 103 records the first data.

The notches formed in the input area 102 may be deformed by the second data indicating a recording area 104 of the recording of the second data.

Industrial applicability

According to this invention, as described above, since a lot of track grooves formed by many notches formed on the basis of the subject to write the first data, and the areas between the grooves are deformed based on the second data and the deformed grooves recorded, provided the reproduction of sound with high quality. In addition, there may be provided a mixed audio playback through an appropriate synthesis or selection of first and second data for playback.

1. Optically the recording medium, contains the track formed by the set of notches formed on the basis of the first data, and areas between the grooves, wherein the grooves are deformed based on the second data, and the recess is deformed on the basis of the second data relative to their normal shape when forming on the specified optical recording medium and the first data formed on the basis of the main data recorded on the optical recording medium, and the second data generated on the basis of auxiliary data to the main data.

2. The optical recording medium according to claim 1, in which the length of the grooves in the track direction is changed based on the second data relative to their normal length in the direction of the track when forming on the optical recording medium.

3. The optical recording medium according to claim 1, in which the depth of the grooves is changed based on the second data relative to their normal depth in the direction of the track when forming on the optical recording medium.

4. The optical recording medium according to claim 1, in which at least part of the width of the grooves is changed based on the second data relative to their normal width in the direction perpendicular to the track, when forming on the optical recording medium.

5. The optical recording medium according to claim 4, in which the width of this recess having a given length, is changed based on the second data is x relative to the normal width in the direction perpendicular to the direction of the track, when forming on the optical recording medium.

6. The optical recording medium according to claim 5, in which the width of the grooves in the middle part thereof in the direction of track width is narrower than other parts of the grooves in the direction of the track.

7. The optical recording medium according to claim 5, in which the width of the grooves in the direction perpendicular to the track is changed on the basis of the second data in the front and rear parts of the grooves in the direction of the track.

8. The optical recording medium according to claim 4, in which the depth of the grooves additionally varies based on the second data relative to their normal depth when forming on the optical recording medium.

9. The optical recording medium according to claim 1, in which the length of the left and right sides of the grooves on both sides from the center of the track in the direction of the track is changed based on the second data.

10. The optical recording medium according to claim 1, in which the front and rear grooves in the direction of the track is shifted on the basis of the second data in the direction perpendicular to the track from the center of the track.

11. The recordable optical recording media containing a light source for issuing a recording laser beam, a modulator for modulating the recording laser beam emitted from the light source, based on the received first and second Dan is s, and the objective lens for the information of the recording laser beam generated by the modulator on the optical recording medium, with the recording device further comprises a processor processing signals to generate first and second data based on the incoming data and the processing of signals creates first and second data based on the main data recorded on the optical recording medium, and auxiliary data to the main data recorded on the optical recording medium, respectively.

12. The recordable optical recording medium according to claim 11, in which the processor signals generates first and second signals based on the high and low main data recorded on the optical recording medium, respectively.

13. Reproducing device for optical recording media containing an optical head for reading first and second data and identification data from optical recording media, comprising a track formed by many notches formed on the basis of the first data, and areas formed between adjacent grooves, and the grooves are deformed based on the second data, and optical recording media has also identification data recorded thereon, a first demodulator for demodulation of the first optical data is whom the recording media on the basis of the output signal of the optical head reading a second demodulator for demodulation of the second data of the optical recording medium based on the output signal of the optical read head and the controller controls the operation of the second demodulator based on the identification data read by the optical head and optical recording media.

14. Reproducing device for the optical recording medium according to item 13, in which the identification data recorded on the optical recording medium are data indicating whether recorded or not the second data to the optical recording medium, and in which the controller actuates the second demodulator, if the identification data indicates that the second data recorded on the optical recording medium.

15. Reproducing device for optical recording media according to 14, characterized in that it further comprises a processor processing signals to generate signals for playback on the basis of the output signal of the optical head reading, and the first and second demodulators served the playback signal from the processor signal processing.

16. Reproducing device for the optical recording medium according to item 15, in which the second demodulator includes a block recognition signal level detection level of the playback signals supplied from the processor si the channels, and processor for demodulation, the demodulation output signals of block-level signals.

17. Reproducing device for the optical recording medium according to item 15, in which the controller includes a switching unit provided between the signal processor and the second demodulator, and a discriminating unit to control the operation of the switching unit based on the identification data, and the discriminating unit controls the switching unit to supply the playback signal to the second demodulator, when the identification data indicates that the second data recorded on the optical recording medium.

18. Reproducing device for optical recording media according to 17, characterized in that it further comprises synthesizing unit for synthesizing the output signals of the first and second demodulators.

19. Reproducing device for optical recording media according p, where the controller includes additional discriminating unit for selecting the output signal synthesizing unit and the output signal of the second demodulator.

20. Reproducing device for the optical recording medium according to item 13, characterized in that it further comprises a unit for recognizing an external device for recognizing whether or not an external device, connect the TES with a reproducing device, registered external device, and the playback device outputs to output at least one output signal of the second demodulator, if the external device is connected to the reproducing device is recognized by the recognition unit of the external device as a registered external device.

21. Reproducing device for the optical recording medium according to item 13, in which the optical read head includes a photodetector divided in the track direction of the optical recording medium at least on the first part of the photodetector and the second photodetector, and the playback device also includes a processor signal processing for processing the output signals of the first and second parts of the photodetector, the first demodulator, which is served with a processor processing signals summed signal representing the sum of the output signals of the first and second parts of the photodetector, the second demodulator, which is served with a processor processing signals of a differential signal representing a difference the output signals of the first and second parts of the photodetector.

22. An optical recording medium comprising a recording area of the data with a passing spiral track formed by many notches formed on the basis of the first data, and p is adadoc, formed between adjacent grooves, and the area management data for recording therein the control data for the first data recorded in the recording area of the data, and at least a plurality of grooves recorded in the management area, deformed based on the second data.

23. The optical recording medium according to item 22, wherein the recess is deformed on the basis of the second data relative to their normal shape when forming on the optical recording medium.

24. The optical recording medium according to item 23, in which the length of the grooves in the track direction is changed based on the second data relative to their normal length in the direction of the track when forming on the optical recording medium.

25. The optical recording medium according to item 23, in which the depth of the grooves is changed based on the second data relative to their normal depth in the direction of the track when forming on the optical recording medium.

26. The optical recording medium according to item 23, in which at least part of the width of the grooves is changed based on the second data relative to their normal width in the direction perpendicular to the track, when forming on the optical recording medium.

27. The optical recording media according p, in which the width of this recess having a given length, is changed based on the second data relative to its normal width in the direction of perp ndikumana the direction of the track, when forming on the optical recording medium.

28. The optical recording medium according to item 27, in which the width of the grooves in the middle part thereof in the direction of track width is narrower than other parts of the grooves in the direction of the track.

29. The optical recording medium according to item 27, in which the width of the grooves in the direction perpendicular to the track is changed on the basis of the second data in the front and rear parts of the grooves in the direction of the track.

30. The optical recording media according p, in which the depth of the grooves additionally varies based on the second data relative to their normal depth in the direction of the track when forming on the optical recording medium.

31. The optical recording medium according to item 23, in which the length of the left and right sides of the grooves on both sides from the center of the track in the direction of the track is changed based on the second data.

32. The optical recording medium according to item 23, in which the front and rear grooves in the direction of the track is shifted on the basis of the second data in the direction perpendicular to the track from the center of the track.

33. The optical recording medium according to item 22, in which the first data are digital data recorded on the optical recording medium, and in which the second data is ancillary data for digital data.

34. The optical recording media according p, where VSP is service data is data, includes at least data copyright protection.

35. The optical recording medium according to item 22, in which the first data are the older bits of the digital data recorded on the optical recording medium, and in which the second data are younger bits of digital data.

36. The optical recording medium according to item 22, in which identification data indicating whether recorded or not the second data to the optical recording medium, additionally recorded in the area management data.

37. The optical recording medium according to item 22, in which the first data is coded data and the second data are the key data for decoding the first data.

38. The optical recording medium according to item 22, in which the first data is data modulated by the method of EFM-modulation.

39. The recording method of optical recording media containing the modulated recording laser beam generated by the light source is coming first and second data information modulated laser beam on the optical recording medium through the objective lens for the formation of tracks including at least a plurality of recesses on the basis of the first data and sites formed between these grooves, and the deformation of the grooves formed on the optical recording medium based on the second Dan is s, the first data is created based on the main data recorded on the optical recording medium, and in which the second data is formed on the basis of auxiliary data to the main data recorded on the optical recording medium.

40. The recording method of optical recording media according to § 39, in which the auxiliary data is data including at least data copyright protection.

41. The recording method of optical recording media according to § 39, in which the first data is created based on high-order bits of the main data recorded on the optical recording medium, and in which the second data is created based on least significant bits of the main data.

42. The recording method of optical recording media according to § 39, in which the first data is coded data and the second data are the key data for decoding the first data.

43. The recording method of optical recording media according to § 39, in which the notches are formed on the basis of the second data relative to their normal shape when forming on the optical recording medium.

44. The recording method of optical recording media according to item 43, in which the length of the grooves in the direction of the track change on the basis of the second data relative to their normal length in the direction of the track when forming on the optical recording medium.

45. The method of recording optical novtel the recording p.43, in which the depth of the grooves is changed to the second data relative to their normal depth in the direction of the track when forming on the optical recording medium.

46. The recording method of optical recording media according to item 43, in which at least part of the width of the grooves is changed to the second data relative to their normal width in the direction perpendicular to the track, when forming on the optical recording medium.

47. The recording method of optical recording media according to item 46, in which the width of this recess having a given length change based on the second data relative to its normal width in the direction perpendicular to the track, when forming on the optical recording medium.

48. The recording method of optical recording media according p, in which the width of the grooves in the middle part thereof in the direction of track width is narrower than other parts of the grooves in the direction of the track.

49. The recording method of optical recording media according p, in which the width of the grooves in the direction perpendicular to the track change on the basis of the second data in the front and rear parts of the grooves in the direction of the track.

50. The recording method of optical recording media according to item 46, in which the depth of the grooves additionally change based on the second data relative to their normal depth in the direction of the track when fo is the formation on the optical recording medium.

51. The recording method of optical recording media according to item 43, in which the length of the left and right sides of the grooves on both sides from the center of the track in the direction of the track change based on the second data.

52. The recording method of optical recording media according p, in which the front and rear grooves in the direction of the track shift based on the second data in the direction perpendicular to the track from the center of the track.

53. The recording method of optical recording media according to item 43, in which the first data are digital data recorded on the optical recording medium, and in which the second data is ancillary data for digital data.

54. The recording method of optical recording media according to item 50, in which the auxiliary data is data including at least data copyright protection.

55. The recording method of optical recording media according to § 39, in which the first data are senior and Junior data on the digital data recorded on the optical recording medium.

56. The recording method of optical recording media according to § 39, in which the first data is coded data and the second data are the key data for decoding the first data.

57. How to play the optical recording media containing demodulates the first data on the basis of signals is s playback data read from the optical recording medium, comprising a track formed by many notches formed on the basis of the recorded first data and areas formed between adjacent grooves, and recesses are formed on the basis of the second data, and optical recording media has also identification data recorded on it, the demodulation of the second data on the basis of the signals of the playback data read from the optical recording medium based on the recognition results of the identification data read from the optical recording medium.

58. How to play the optical recording medium according to § 57, in which if the identification data recorded on the optical recording medium, indicate that the optical recording media recorded the second data, demodulated second data based on the data read from the optical recording medium.

59. How to play the optical recording medium according to § 57, which recognize the signal level of the playback data read from the optical recording media, for demodulation of the second data.

60. How to play the optical recording medium according to § 57, which are synthesized demodulated first data and the second demodulated data, and serves to output.

61. How to play the optical is the La recording § 57, which further if you recognize that the external device is a registered external device, print output, at least demodulated second data.

62. How to play the optical recording medium according to § 57, which use optical read head that includes a photodetector divided in the track direction of the optical recording medium at least on the first part of the photodetector and the second photodetector, the first data demodulator based on the total signal representing a sum of the output signals of the first and second parts of the photodetector, and the second data demodulator on the basis of a difference signal representing the difference of the output signals of the first and second parts of the photodetector.



 

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