Disc-shaped recording media

 

(57) Abstract:

Usage: in recording technique, in particular in the disk media, the storage media using optical means. The inventive disc inner diameter of the recording area of audio data to carry out a value from 28 to 50 mm, an External diameter of this area are: internal diameter 28 mm - from 58 to 62 mm and internal diameter 50mm - from 71 to 73 mm Audio data in the recording layer is recorded in compressed form. 7 C.p. f-crystals, 13 ill., table 1.

The invention relates to the field of information storage using optical means, in particular to the disc-shaped recording media type CD-ROM drive (CD), on which data is recorded in compressed form. The invention can be used in small portable recording/reproducing apparatus.

Known disc-shaped recording medium on which audio data in the form of the signals recorded in the optical medium, the medium consists of a substrate with a diameter of 120 mm with centering hole. The substrate has a surface playback and recording surface with a lead-in area and the annular area of the recording of the audio data [1].

The purpose of the invention is the creation of disc-shaped recording medium of small size, on which data is recorded in compressed form to ensure the duration of audio playback no less than when playing back a disc-shaped media standard sizes.

To achieve this goal in the disc-shaped recording medium on which audio data in the form of the signals recorded in the optical medium containing the disk substrate with the centering hole of the playing surface and its opposite surface with audio recording layer having an introductory area and the annular area of the recording of the audio data, the internal diameter of the recording area of audio data executed by the size from 28 to 50 mm, and the outer diameter of the recording area of audio data to the internal diameter of this region in 28 mm made size from 58 to 62 mm, the outer diameter of the recording area of audio data to the internal diameter of this sphere of 50 mm made in size from 71 to 73 mm, and the audio data in the recording layer is recorded in compressed form.

In the disc-shaped recording medium on the surface of the play around the centering holes made the ledge.

Compressed audio data on zapisyvaus/4.

In the disc-shaped recording medium on which the recorded audio data in the form of signals containing disc-shaped substrate with the centering hole, surface play and anti - her lying surface with audio recording layer having an introductory area and the annular area of the recording of the audio data, the internal diameter of the recording area of audio data executed by the size from 28 to 50 mm, and the outer diameter of the recording area of audio data to the internal diameter of this region in 28 mm made size from 58 to 62 mm, the outer diameter of the recording area of audio data to the internal diameter of this sphere of 50 mm made in size from 71 to 73 mm, and audio data in the recording layer is recorded in compressed form.

On the surface the play around the centering holes made the ledge.

Compressed audio data on the recording layer is represented in a continuous form.

Audio data on the recording layer is compressed with a factor of 1/4.

In Fig. 1 presents the dependence between the inner and outer diameters of the recording area of the data of the disc-shaped recording medium; Fig. 2 is a top view of the recording medium, and Fig. 3 is a schematic front view showing doskoobraznyj on the table of the drive unit of the recording medium; in Fig. 5 - schematic diagram of an apparatus that uses a real disc-shaped recording medium; Fig. 6 - format modular design component of the recording node of Fig. 7 is a typical data structure of a sector or block of Fig. 8 - the content of the subtitle; Fig. 9 is a data structure in the sector of so-called format CD-1; Fig. 10 - frame format and the block, or sector, KD-standard; Fig. 11 is a data format used in the above described apparatus recording/playback, and Fig. 12 - the status of the managed memory recording system of the recording/reproducing apparatus shown in Fig. 4; Fig. 13 - the status of the managed memory reproducing system of the recording/reproducing apparatus shown in Fig. 4.

An implementation option of the disc-shaped recording media corresponding to the present invention will be explained with reference to Fig. 1-3. Fig. 1 shows the internal diameter and external diameter of the recording area of the data disc-shaped recording media. Fig. 2 is a front view of the disc-shaped recording medium, and Fig. 3 is a schematic front view showing the recording media placed in the cassette.

Disc-shaped recording media, for example in which a spindle (not shown) is inserted and secured for rotational drive of the disk 2. Disk 2 is inserted into the cassette 3 (Fig. 3). Salonoja plate 4 (or shutter) movably mounted in the cassette 3.

Disc 2 has a data recording area RA of the inner diameter d1and outer diameter d0.

The introductory area, or region table of contents (TOC), is provided inside the recording area data RA, which has an inner diameter of dL. The area defined between the data recording area RA and the outer diameter of the disk dDis the so - called marginal area. The optical head of the PR, shown in broken lines in Fig. 2, shown watching at inner path input field (with an inner diameter of dL).

Outer diameter d0and inner diameter d1the field of data entry, RA plotted on the abscissa and the ordinate, respectively (Fig. 1). Five curves L60, L64, L68, L72and L76in the figure represent the ratio between the outer diameter doand an inner diameter of d1that gives the length of time recording/playback to stereo level in CD-1 format. Other conditions of the recording format of the disk-like conditions format standard CD (CD - DA format) and include, for example, the pitch of the track is 1.6 m the write data RA preferably equal to 28 mm, the lower limit in the 32 mm is preferable for the drive flat on both sides like a regular CD from considerations about the width required for fixing faceplate and clamping with a minimum size of the optical head, which can be achieved with present state in the art. With an inner diameter of d132 mm inner diameter dLthe introductory area of about 30 mm as required diameter dHthe centering holes 1 to 10 mm in most cases, the space in approximately 10 mm can be stored in one side of the centered hole 1 between the centering hole 1 and the inner periphery of the input area. As required allowance for fastening the faceplate and clamp near the centering holes 1, the size of the optical head between the center and the outer wall is limited to less than 10 mm, the aforementioned width for fixing faceplate and clamping, which is close to the minimum size of the optical head can be realized at the present time. In light of the above, it is necessary to set the lower limit of inner diameter dLintroductory region and the lower limit for the inner diameter d1the recording area on the recording area of the data RA set to be equal to the inner diameter area for recording data of the standard CD, or 50 mm, considering that the size is larger than the size of a standard CD, the result is only reduced recording capacity.

Therefore, it is preferable that the inner diameter d1the field of data entry, RA was chosen in the range from 32 to 50 mm

Outer diameter d0the field of data entry, RA can be determined depending on the internal diameter d1taking into account the required capacity value account. With the modern technology of data compression data compression ratio, which will satisfy the required quality of sound, for example, the sound quality of FM (frequency modulation) broadcast level equal to approximately 1/4 or chetyrehstvorchatye at most, so the above stereo level is most appropriate. With another condition, the same as for the standard CD, and a linear speed of 1.2 m/s, the relationship between the time of recording/playback, and internal and external diameters of the recording area of the data is the same as shown by curves L60-L76in Fig. 1. On the other hand, the time index recording/playback, the most suitable for the user is min max, which is almost equal to the time recording/playback 120 mm disk. It should be noted that the diameters of d0and d1that may be guaranteed the time of recording/play - tion from 72 to 76 min at least, are enclosed in shaded pattern region in Fig. 1. If the increase and decrease in capacity of recording data, due to changes in the recording conditions were taken into consideration, it is preferable to set the outer diameter of the recording area of the data RA so that it was in the range of from 60 to 62 mm (limits between points Randand Rbin Fig. 1) and in the range from 71 to 73 mm (limits between points Pcand Pdin Fig. 1) for internal diameters of d1the field of data entry, RA 32 and 50 mm, respectively.

As a concrete example, one of the most desirable values are: inner diameter d1region RA=32 mm and outer diameter d0region RA= 61 mm, as shown at point Q1in Fig. 1. As other sizes, for example: inner diameter dHthe centering holes dN=10 mm; inner diameter dLthe centering holes dL=30 mm and outer diameter dDdisk =64 mm

If the disc is placed in the cassette size 70 mm x 70 mm and comes is small, pocket size recording/reproducing apparatus.

As another example, also desirable that the following dimensions: inner diameter d1the field of data entry, RA=42 mm; outer diameter d0the field of data entry, RA= 67 mm, as shown at point Q2in Fig. 1, for which other dimensions can be selected so that the internal diameter dLintroduction the field of dL=40 mm; outer diameter of the disk dD=70 mm

Alternatively, the diameters d1and d0can be chosen so that the inner diameter d1the field of data entry, RA=50 mm; outer diameter d0the field of data entry, RA=72 mm, other sizes that can be selected, for example, so that the inner diameter of the introduction of the dL=46 mm; outer diameter of the disk dD=76 mm

It should be noted that it is possible variety of combinations, other than those specified above, up until satisfied the above-mentioned dimensional conditions.

The above conditions are conditions for a disk in the form of a flat plate, similar to the compact disk. However, if operated disc has a construction in which the fixing faceplate or clamping may be olorado 28 mm at least. A typical example of accommodation is a recordable disc inserted in the apparatus, as shown in Fig. 4.

Disc-shaped recording media (Fig. 4) is a magneto-optical disk 5 and the magnetic metal plate is placed on one main surface of the disc, attracted by a magnet 6, is placed on the table of the disk 7 to clamp the magneto-optical disc 5 on the table of the disk 7.

Magneto-optical disk 5, operated in the loading drive system that uses mainly prithivi - expansion force of the magnet, includes a disk substrate 8 formed of transparent synthetic polymer, such as polycarbonate polymer. Recording information signal layer for recording information signals is deposited on the main surface 9 of the disk substrate 8. The other surface 10 of the disk substrate 8, the mating surface 9, is the surface of the record/reproduction of the information signal, and a light beam irradiates the recording audio layer surface side of the recording/playback to record and/or playback of the audio data.

The substrate 8 has a centering hole 11, mating with the centering element 12, adapted for privatedisk 5. Magnetic metal plate 13 in the form of a flat disk attached to the middle section of the main surface 9 of the substrate 8 for closing the centering holes 11, as for example, sticky substance.

If the disc-shaped substrate 8 of the magneto-optical disk 5 has a small thickness (about 1.2 mm), the centering hole 11, the gear centering element 12 provided in table 7 disk may not be of sufficient depth. As the metal plate 13 is provided on the main surface 9 of the substrate 8 for closing the centering hole, the centering element 12, tazapsidis with centering hole may not be of sufficient height.

The centering element 12 to bring the center of rotation of the magneto-optical disc 5 in coincidence with the axis of rotation of the table 7 disk when loading a magneto-optical disc 5 on the table disk 7 is mounted so as to have a reciprocating axial movement of the drive shaft 14 supporting table 7 disk 5, and move the spiral spring 15 to a distant from the center of the end of the drive shaft 14. When the magneto-optical disc 5 is loaded on the table 7, the centering element 12 extends to a maximum of the drive shaft 14 under groothousen hole 11 for centering the magneto-optical disc 5 with respect to the table 7.

For the reliability of such centering operation of the centering element 12 has a sufficient height to provide greater stroke length relative movement between the magneto-optical disk 5 and the centering element 12, i.e. the other main surface 10 of the substrate 8, opposite the main surface 9, provided with a metal plate 13, is formed with an annular projection 16 surrounding the centering hole 11, to provide sufficient depth of this hole and a sufficient height of the centering element 12, in order to ensure accurate alignment.

The magneto-optical disk 5, centered centering element 12 and loaded on the table disk 7 has end bearing surface 17. Mounted on the table 7 disk, a magneto-optical disk 5 is clamped by a metal plate 13 is attracted by a magnet 6 is placed on the table 7 disk, and is driven into rotation of the driving motor 18 in conjunction with table 7 of the disc 5.

If the inner diameter d1the recording area of the data set at 28 mm, it is sufficient to set the minimum value of the outer diameter d058 mm, as shown at point Rwithin Fig. 1.

Provides an example of various sizes, which is>/P>First of all, the diameter of the locating hole 11 is increased, for example, up to 11 mm for the increased area of the metal plate 13, facing the magnet 6, to ensure accurate clamping. When selecting the end surface 17 of the projection 16 as a bootable reference plane for the positioning of disc height during loading, the limits of movement of the optical head extended toward the inner region. The inner diameter of the recording area of the data d1set in 31 mm Outer diameter d0zone recording data is equal to 61 mm Point Q in Fig. 1 is a point satisfying the above conditions for the inner diameter d1and the outer diameter d0. The introductory area having a width of 1.5 mm, is formed on the inner side of the recording area of the data having an inner diameter of 31 mm, and input data is written in the introduction area. The introductory area having a width of 0.5 mm, is formed on the outer side of the recording area of the data having the outer diameter 61 mm, and input data is written in the aquatic area.

The above-described magnetic clamping system can be used in combination not only with magneto-optical disk 5, but also with various other disks to the disk.

The cross-hatched area in Fig. 1 is a combination of the diameters d1and d0that can be taken when the set time recording/playback more than the aforementioned maximum period of time 72-76 min, or when the data compression ratio is reduced to improve the sound quality.

Fig. 5 explains an example of performing a recording/reproducing disk apparatus, the operator described disc-shaped recording media.

In the recording/reproducing disk apparatus shown in Fig. 5, the magneto-optical disk 19, driven in rotational movement of the spindle motor 20 is used as the recording media. At that time, as the laser light radiated by the optical head 21 on the magneto-optical disk 19, the modulating magnetic field, consistent with the data record, is served by the magnetic head 22 on the magneto-optical disk 19 for recording data on a track of the recording disk by the so-called recording modulated magnetic field. On the other hand, the track record magneto-optical disk 19 is monitored by laser radiation through the optical head 21 for photomagnetic playback of recorded data.

High as a collimator lens, objective lens, polarizing device for beam splitting or cylindrical lens, and a photodetector unit and is located opposite the magnetic head 22 from the magneto-optical disk 19 in between. For recording data on the magneto-optical disk 19 of the optical head 21 emits laser radiation on the track of the magneto-optical disk 19 for recording data thermomagnetic way. The modulating magnetic field consistent with the record data is supplied to a track of the disc-shaped medium by the magnetic head 22, which is driven by a driving head circuit 23 of the recording system. The optical head 21 detects the laser light reflected from the track of the medium to detect the focus error of the so-called astigmatic method, and also to detect the tracking error of the so-called push-pull method. When reproducing data from the magneto-optical disk 19 of the optical head 21 detects the difference between the angle of polarization (rotation angle Kerr) of the reflected laser radiation from the tracks of the medium in order to reproduce the recorded audio data.

The electrical output of the optical head 19 is input to a radio frequency (RF) circuit 24. RF circuit 24 viescas head 21 and transmits the selected signals in servo - reviewshow scheme 25, converting the reproduced signals into corresponding binary signals and applying binary signals to the decoder 26 of the reproducing system.

Servopress circuit 25 is composed focusing servicemay, witness servicemay, control of the spindle servo circuit and screw servopress scheme. Focusing servopress scheme performs control of the optical system of the optical head 3 so that the error signal, the focus will be reduced to zero. Witness servopress scheme performs control of the optical system of the optical head 3 so that the error signal of the tracking information track will be reduced to zero. Control of the spindle servo circuit controls the spindle motor 20 to bring the rotation of the magneto-optical disk 19 with a predetermined speed, such as constant linear velocity. Screw servopress circuit moves the optical 21 and magnetic head 22 across the information track on the magneto-optical disk 19 in accordance with the command of the system controller 27. Servopress circuit 25, which performs these various control operations, transmits information indicating R/reproducing disk apparatus has been described with reference to the recording and playback ADIM audio in stereo level, the present invention can also be applied to record and/or playback of other ADIM audio data in another system KD-1.

With the above disk-like recording medium corresponding to the present invention, the inner diameter of the recording area of the data set in 32-50 mm, the outer diameter of the recording area of the data to the internal diameter of 32 mm is set 60-62 mm and the outer diameter of the recording area of the data to the internal diameter of 50 mm is set 71-73 mm, so that the recording media can be used with small portable recording/reproducing disk apparatus, at the same time compressed audio data with the compression ratio of 1/4 is recorded on the recording medium, to implement the playback time is approximate the same as for standard 120mm CD, that is, when writing compressed audio data with the compression ratio of 1/4, the track pitch of 1.6 microns and a linear velocity of 1.2-1.4 m/s time recording/playback may be about 60 minutes minimum and about 72-76 min on average.

The system controller 27 join key input operating section 28 and the display section 29. This system controller controls the recording system and vosproizvodyatsya 28. The system controller 27 coordinates based on a sector-by-sector address information reproduced from the recording tracks of the magneto-optical disk 19 initial time or sub-Q data, the position of the record as well as playback position on the track record that is tracked by the optical head 21 and magnetic head 22. The system controller 27 allows you to play biologially mode on the display section 29 based on the data pitovoimansa mode in the reproduced data obtained from the RF circuit 24 through the playback system (as described later) or by data pitovoimansa mode in ADIGM the encoder 30, which are selected by switching the key output of the operational section 28. The system controller also allows you to display the playing time in the display section 29 based on the ratio of data compression and data playhead position on the track record in vetovoimaisiin mode.

To display the playback time sector-by-sector address information (absolute time informa - tion), reproduced from the recording tracks of the magneto-optical disk 19 with the initial time or with the sub-Q data is multiplied by the reciprocal relations compression for display in the display section 29. If the absolute time information was recorded (pre-formed) on the track record magneto-optical disk, the pre-formed absolute temporal information can be reproduced during recording, and multiplied by the inverse of the ratio of data compression to display the current position in the form of actual recording time.

The recording system of the recording/reproducing disk apparatus provided with an analog-to-digital (a/d) Converter 31 is supplied to an analog audio signal A1Nfrom the input terminal 32 through a low pass filter 33.

Analog-to-digital Converter discretetime audio signal A1N. Digital audio data received from the analog-to-digital Converter 31, indulge in the encoder with adaptive differential pulse code modulation (ADIM encoder) 30. ADIM encoder 30 processes the digital audio data with the prescribed transmission rate and has its operating mode specified by the system controller 27. For example, in level In the table of digital audio data, the process shall be punishable in the compressed data (ADIM audio data) having a sampling frequency of 37.8 kHz and the number of bits in the discrete Rav is s/s

In the embodiment of Fig. 1 assumes that the frequency of discretization analog-to-digital Converter 31 is fixed on the sampling frequency of the standard format CD-DA, or 44.1 kHz, and that ADIGM the encoder 30 bit compressed from 16 bits to 4 bits is performed after converting the sampling frequency in accordance with the mode of compression, for example, 44.1 kHz 37.8 kHz for level C. Alternatively, the sampling frequency of the analog-to-digital Converter 31 itself can be controlled by the switch as a function of the compression modes. In this case, the cut-off frequency of the low-pass filter 33 is also controlled by the switch as a function of the managed switching frequency sampling analog-to-digital Converter 31, which is the sampling frequency of the analog-to-digital Converter 31 and the cut-off frequency of the low-pass filter 33 can be simultaneously controlled depending on the modes of compression. The memory unit 34 is used as a buffer memory in which data recording and playback is controlled by the system controller 27 and which maintains ADIM audio data submitted from ADIM Modera 30 for continuous recording to disk, as the case may require. That is, in stereo level In the encoded audio data, nepreryvno recorded in the memory unit 34. Although it is enough to record the compressed data (ADIM data), at a speed of each of the four sectors, as explained above, it is almost impossible to write data at this speed on the basis of real-time, and therefore, the sectors are recorded continuously (as explained later). This recording is performed explosively (intermittently) on the standard data transfer rate of 75 sectors/sec, taking advantage of the rest period, with a clot composed of a predefined number, for example, 32 sectors, as the host write data that is in memory ADIM, audio stereo level, which were continuously recorded at a low transfer rate of 18.75 (=75/4) sector/s, according to the degree of compression of the data read data write explosively with vysheupomjanutoj transfer rate of 75 sectors/sec. Full speed data transfer, played and recorded so including Nezavisimoye period, this lower rate of 18.75 sectors/C. However, the instantaneous data rate within a time explosive recording operation is equal to the above standard rate of 75 sectors/sec Therefore, if the rotation speed of the disk is the same as the standard format CD-DA, the recording as the structure of the recording format CD-DA.

ADIM audio data reproduced from the memory unit 34 explosively with a transfer speed of 75 sectors/sec, that is, data records are served in the encoder 35. Chain data supplied from the memory unit 34 in the encoder 35, the block of data is continuously recorded with each record is made up of many, for example, 32 sectors, and several Shostakovich sectors, built before and after clot. Shushkovsky sector has a length of more than proslavama length encoder 35, so that even when the sector is subjected to stratification, the data of other clusters remain unaffected. Details of the records based on the bunch-by-bunch will be described below with reference to Fig. 5.

The encoder 35 processes the data records submitted explosively from the memory unit 34 with the operation of correcting coding errors, such as partial addition, or delamination, or modulation eight-to-fourteen (MVC). The record data thus encoded by the encoder 35, served in driving the magnetic head circuit 23.

For driving the magnetic head diagram 23 is attached magnetic head 22, which is driven to make trugoy hand, the system controller 27 performs control a position of the recording operation for the memory block 34 and, based on the control operation, performs the position control of the recording disk so that the above recorded data playback - led explosively from the memory unit 34 will be recorded continuously on the track record magneto-optical disk 19. To control the position of recording the recording position of the recorded data is reproduced explosively from the memory unit 34, coordinated by the system controller 27, and the control signals indicating the recording position on the track record magneto-optical disk 19, served in servopress scheme 25.

Reproducing system of the recording/reproducing disk apparatus is explained below.

Reproducing system adapted for reproducing recorded data continuously recorded above-described recording system on the track record magneto-optical disk 19, and is supplied by the decoder 26, which output is fed playback, which is generated by the optical head 21, the tracking track recording on the magneto-optical disk 19 by laser radiation, and which was the conversion is isibaya system and processes the output playback the converted signals in binary format to the RF circuit 24 with the above encoding for error correction and MVC decoding, and reproduces the above ADIM audio stereo level with a transfer speed of 75 sectors/sec, which is greater than the normal speed transmission in the above-mentioned stereo level Century. Reproducible data produced by the decoder 26, and serves in the memory unit 36.

The memory block 36 has its recording and reproduction of data managed by the system controller 27 so that the playback data submitted from the decoder 26 with the transfer rate of 75 sectors/sec, recorded explosively with a transfer speed of 75 sectors/sec. data playback recorded explosively with a speed of 75 sectors/sec memory block 36, continuously reproduced therefrom in the normal stereo mode level of 18.75 sectors/sec.

The system controller 27 also controls the memory write reproduced data in the memory block 36 with a transfer speed of 75 sectors/sec, continuously reproducing the data from the memory block 36 with a transfer rate of 18.75 sectors/sec.

The system controller 27 performs in addition to the above memory management operations on the way, what playback data recorded explosively above control memory in the memory unit 36, continuously reproduced from the recording tracks of the disk 19. Management reproducing position is performed by coordinating the playback position on the disk of the above-mentioned data playback recorded explosively in the memory unit 36 by the system controller 27 and the input control signal indicating the playback position on the track record magneto-optical disk 19, in servopress scheme 25.

ADIM audio stereo level In the received quality of data reproduction, reproduced continuously from the memory block 36 with a transfer rate of 18.75 sectors/sec, served in ADIM decoder 37.

This decoder 37 is combined with ADIM by the encoder 30 of the recording system and has its operating mode specified by the system controller 27. With the present recording/reproducing disk apparatus ADIM audio stereo level expanded by a factor of four for playback of digital audio data. Reproduced digital audio data transmitted ADIM decoder 37 in the digital-to-analog (d/a) Converter 38.

Digital-to-analog the analog audio ANDthe Oita. Analog audio ANDthe Oitareceived in digital-to-analog Converter 38, is output through a low pass filter 39 output 40.

Reproducing system of the recording/reproducing disk apparatus of the present variant implementation is supplied digital output function so that the digital audio data output ADIM decoder 37 is displayed on the tap output 41 via the digital output encoder 42 as a digital audio signal Dthe Oita.

The recording/reproducing operation of the above-described recording/reproducing disk apparatus explained above is more detail.

The recorded data, i.e. data that is reproduced from the memory unit 34, going to the clot (package) in the interval of a predefined number, for example 32, sectors or blocks, and several Shostakovich sectionof are positioned between adjacent bunches. In greater detail, referring to Fig. 6, each bunch WITHtoconsists of 32 sectors, or blocks B0 - V, and spanning five sectors L1-L5fall between these clotstofor connection of adjacent bunches. For recording clot, such as the K-th clotto, 32 sectors B0 - IN/SUB> to clotK-1(blocks "vagania") and three blocks L1-L3to clotK+1, giving a total of 38 sectors, are recorded as one node, 38 sectors recorded data are transferred from the memory unit 34 in the encoder 35, is a layer to rebuild the data on the distance up to 108 frames corresponding to CA. 1.1 sector. However, the data inside the clot WITHtosafely contained within the block "vagania" L3-L5to blocks "running" L1-L3without affecting the remaining clotsK-1orK+1. Meanwhile, dummy data, such as 0, are placed in the spanning sectors L1-L5to avoid the harmful effects that can have a gap in the data itself. When you write the following clotK+1three sector L3-L5of the five binders sectors L1-L5between the current bunch and the next bunch are used as blocks "vagania", so that the sector L3written too without causing any discomfort. Sector L3block "vagania or sector L3block "running" can be omitted, so that the recording can be performed with the remaining 37 sectors as with the node.

When recording on a bunch-by-Shastitko data processing can be simplified. On the other hand, if the recorded data may not be recorded properly due to a malfunction, such as defocusing failure paths and so on, the override can be performed on a bunch-by-bunch basis and, if the recorded data cannot be reproduced effectively, repeat play can be performed on a bunch-by-bunch basis.

Meanwhile, each sector or block consists of 12 clock bits, 4 bytes procurement and 2336 bytes of data themselves D-D, arranged in this order, totaling 2352 bytes. The sector or block the lattice is represented as a two-dimensional lattice, as shown in Fig. 7, in which 12 synchro - desiroush bits consist of the first byte of the United Nations, ten FFH bytes and the last byte of the United Nations in hexadecimal notation (H is a hexadecimal number). Following a 4-byte header consists of the address parts for minutes, seconds, and units, each one byte, and byte mode data. These data mode mainly indicates CD-R OM mode, while the structure of the sector shown in Fig. 6 or 7, corresponds to mode 2 CD-R MD format. CD-1 is a standard, using the mode 2 and the content of the data required from D to bits and 4 bytes of the header are the same as with CD-R Ω mode 2 shown in Fig. 6 and 7. The following 8 podzagolovok bytes prescribed, as shown in Fig. 8, in which the data D and D is the number of files, data D and D is channel numbers, data D and D is podlodowy data, and data D and D is data of this type. Data from D to D and data D to D is the same data are recorded in two instances. The following 2328 bytes consist of 2048 bytes of user data, four of the detecting error of bytes, 172 bytes R parity and 104 byte 0 parity for form 1 of Fig. 9A. This form of L is used for recording alphanumeric data, badarneh data and video data of the strong compression. 2328 bytes to form 2 (Fig. 9B) consists of 2324 bytes of user data, following in the course of podzagolovok data and the remaining 4 reserved bytes of data. This form 2 is used for recording compressed audio data or video data. In the case of compressed audio data 18 128-byte sound groups (2304 bytes) are arranged in 2324 bytes of user data, with the remaining 20 bytes representing Unallocated space.

Meanwhile, when the recording of the above are based on sector data to the disk encoding operation, such as a parity adding or prolivnyim in Fig. 10.

Referring to Fig. 10, each block or sector consists of 98 frames from 1 to 98-th frame, and each frame has 588 periods of clock channels T (T). Within each frame there is a sync frame structural part of T (plus 3T for communication), podkapova part of 14T (plus 3T for communication) and some data from T (for audio and data priority). Part of the data D consists of 12 bytes or characters of the audio data, 4 bytes of data parity, 12 bytes of audio data and 4 bytes of data parity that have been processed MUCH (modulation-fourteen). The audio data in each frame are 24 Itami, or 12 words, because every word discretized audio data consists of 16 bits. Podkapova part is an 8-bit podlodowy data that has been subjected MVC and built in unit with 96 frames as a node, each bit constituting one-eighth podlodowych channels P-W. Podlodowy part 5 of the first and second frames are sinfrastructure block S0and S1that violate MVC rule, each of podlodowych channels R to W is composed of 96 bits from the third to 98 of the frame.

The above-mentioned audio data recorded after prokleivanija, lose prokleivanija during playback shown in Fig. 7 and 9, may be recorded in place of the audio data.

Between those, the digital data obtained in the analog-to-digital Converter 31 in the recording/reproducing disk apparatus shown in Fig. 5, is data similar to the data format CD-DA, that is, the PCM audio data with a sampling frequency of 44.1 kHz, the number discretizing is 16 bits and the data transfer rate of 75 sectors/sec, as shown in Fig. 11. When data is transmitted in ADIM encoder 30 to be bicoloratum in the above-mentioned stereo, digital data is converted into data with a sampling rate of 47.8 kHz, and the number of bits sample rate is compressed to four bits. In affect, the output is ADIM audio data having a data rate reduced to 1/4, or to 18.75 sectors/sec. of ADIM audio stereo level, continuously issued with a transfer rate of 18.75 sectors/s from ADIM encoder 30, serves in the memory unit 34.

Referring to Fig. 12, the system controller 27 controls the memory unit 34 so that the record pointer W of the memory block 34 continuously persived to the transfer rate of 18.75 sectors/sec continuous write ADIM audio data in the memory unit 34 when the data transfer rate of 18.75 sectors/sec, and when Denia R memory block 34 is growing explosively to the transfer rate of 75 sectors/sec, to play a predetermined amount TO ADIM data explosively from the memory unit 34 as the recorded data with the above-mentioned transfer rate of 75 sectors/sec. Should be noted that the above predetermined amount of To have data of the same lump as a node.

That is, in a recording system of the recording/reproducing disk apparatus shown in Fig. 5, ADIM audio data is continuously output at a transmission rate of, for example, of 18.75 sectors/s from ADIM encoder 30 pishetsa in the memory unit 34 with the above-mentioned transfer rate of 18.75 sectors/sec. When the amount of ADIM data stored in the memory unit 34, exceeds a predefined amount of data, amount of data TO ADIM audio data is reproduced explosively from the memory unit 34 on the transfer rate of 75 sectors/sec, as recorded data, so that input data can be written continuously in the memory unit 34, meanwhile the area of recording data greater than a predefined amount, endlessly is stored in the memory unit 34. When the writing of the provisions of the records on the track record magneto-optical disk 19 under the control of the system controller 27 of the recorded data is reproduced explosively from the memory unit 34, can be written poolsa, than the predetermined amount, is stored in the block pamai 34, the data can be recorded continuously depleted in the data area is greater than a predefined amount, even if the system controller 27 detects that happened derailed from the path, and so on, due to, for example, interference to interrupt the write operation on the magneto-optical disk 19, and the operation re-installation can be performed in the interval. Thus, the input data may be continuously recorded without dropping out on the track record magneto-optical disk 19.

Meanwhile, the data start time corresponding to the physical address of the sector, are attached to ADIGM the audio data on a sector-by-sector basis and recorded on a sector-by-sector basis on the magneto-optical disk 19. Data table of contents indicating a recorded area and the recording mode is recorded in the table of contents.

In the reproducing system of the recording/reproducing disk apparatus shown in Fig. 5, the system controller 27 controls the memory block 36 so that, as shown in Fig. 13, the pointer recording W memory block 36 persived with a transfer speed of 75 sectors/sec to write repeatable Yes persived transfer rate of 18.75 sectors/sec, in order to continuously reproduce the playback data from the memory block 36 with a transfer rate of 18.75 sectors/sec, and the pointer recording abruptly persived with a transfer speed of 75 sectors/sec explosively, therefore, when the pointer recording W dogoniatsa the playhead R, the recording is interrupted. When the amount of data playback accumulated in the memory unit 36 is less than the predetermined amount L, the recording starts again.

Thus, with the above-described reproducing system of the recording/reproducing disk apparatus, the system controller 27 controls the memory block 36 so that ADIM audio stereo level reproduced from the recording tracks of the magneto-optical disk 19, are explosively in the memory unit 36 with a transfer speed of 75 sectors/sec and continuously reproduced from the memory block 36 as playback data transfer rate of 18.75 sectors/sec, so the playback data can be played back continuously from the memory block 36, while the area occupied by data, greater than predetermined amount L, endlessly is stored inside the memory unit 36. Such data playback, abruptly playback is kOhm disk 19 running reproducing position on the track record magneto-optical disk 19 by the system controller 27. In addition, the scope of reproduced data exceeds a predefined volume L, infinitely stored in the memory unit 36, as described above, therefore, even when the system controller detects a case of jumping the track, and so on, due to, for example, interference, and the playback operation, the magneto-optical disk 19 is interrupted playback data can be reproduced from the playback data area having a space greater than a predefined amount of data to continue the removal of analog audio signals, and the operation of the original position can be performed in the interval.

1. Disc-SHAPED RECORDING MEDIUM, on which audigane in the form of the signals recorded in the optical medium containing the disk substrate with the centering hole, terrain playback and opposite her surface with audio recording layer having an introductory area and the annular area of the recording of the audio data, wherein the inner diameter of the recording area of audio data executed by the magnitude of the 28 - 50 mm, and the outer diameter of the recording area of audio data to the internal diameter of this region in 28 mm made size 58 - 62 mm, the outer diameter of the recording area of audm layer is recorded in compressed form.

2. Media under item 1, characterized in that on the surface of the play around the centering holes made the ledge.

3. Media under item 1, characterized in that the compressed audio data to a recording layer provided in a continuous form.

4. Media under item 1, characterized in that the audio data on the recording layer is compressed with a factor of 1/4.

5. Disc-shaped recording medium on which the recorded audio data in the form of signals containing the disk substrate with the centering hole, playing surface and opposite her surface with audio recording layer having an introductory area and the annular area of the recording of the audio data, wherein the inner diameter of the recording area of audio data executed by the magnitude of the 28 - 50 mm, and the outer diameter of the recording area of audio data to the internal diameter of this region in 28 mm made size 58 - 62 mm, the outer diameter of the recording area of audio data to the internal diameter of this sphere of 50 mm made size 71 - 73 mm, and audio data in the recording layer is recorded in compressed form.

6. Media under item 5, characterized in that on the surface of the play around the centering holes completed invoice is a continuous form.

8. Media under item 5, wherein the audio data on the recording layer is compressed with a factor of 1/4.

 

Same patents:

The invention relates to materials for storing coded information and methods of making such materials

Media // 2010358
The invention relates to media devices digital audio, video, optical external storage devices of computers

The invention relates to recording devices and/or reproduction of information with mutual relative movement of the optical storage medium and the optical head and can be used in the information technology, such as devices, digital audio, digital video, optical external storage devices of computers

FIELD: optical data carriers.

SUBSTANCE: optical data carrier has at least two layers, each of which is a substrate with recording film, on which optically discernible code relief is formed with information elements readable via laser radiation, which contain elements with optical limiting property. Method for manufacture of optical multilayer data carrier includes manufacture of at least two layers, each of which has optically discernible code relief with laser radiation readable information elements, which are formed of substance, having property of optical limiting. Method for multilayer optical recording of data, in which information is recorded by forming and moving pulses of laser radiation flow along surface of recording film in formed tracks, filled with substance, having optical limiting property, or components for synthesis of substance, having property of optical limiting. Method for reading from optical multilayer data carrier, including forming of laser radiation flow, its focusing at read layer with optically discernible code relief with information elements, containing substance, having property of optical limiting, modulation of light signal reflected from code relief by frequency and amplitude.

EFFECT: higher efficiency.

4 cl, 3 dwg

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

FIELD: optical data carriers.

SUBSTANCE: device has cation dye or mixture of cation dyes with optical characteristics, changed by means of recording beam, an at least one substance with functions of damper and phenol or substituted phenol with one hydroxide group or more, while it additionally contains phenol or substituted phenol in form of phenolate ion, forming a portion of anions for dye cations, as a stabilizer. Data carrier can contain anionic metal-organic thyolene complex as damper, which forms other portion of anions for dye cations.

EFFECT: higher stability, higher durability, lower costs.

5 cl, 1 tbl, 3 ex

FIELD: optical data carriers.

SUBSTANCE: device has tracks, each of which is comprises multiple recesses, formed on basis of first data, meant for recording, and areas between recesses. Multiple recesses are displaced from track center on basis of second data, at the same time recesses cross central position of track with given periodicity. First data may be recorded analogically to compact disk data. Second data may be separated from signal of track tracking error. Second data may be used for copy protection in relation to first data, while amount of first data, which can be recorded on carrier, does not decrease when recording second data, and as a result of recesses displacement range being set within limits of preset value in range, wherein no track tracking displacement occurs, first data can be played back by existing players to provide for compatibility of playback.

EFFECT: higher efficiency.

8 cl, 12 dwg

FIELD: optical discs that can be manufactured with the use of one and the same process parameters.

SUBSTANCE: the optical disc for recording and/or reproduction has an area of an initial track, user's data area and an area of the final track. Each of the areas of the initial track, user's data and final track includes recording grooves and fields between the recording grooves produced in them. The recording grooves and the fields between the recording grooves include curves produced at least on one side of the recording grooves and fields between the recording grooves. The curves in the area of the initial track, in the area of the user's data and in the area of the final track are modulated by means of various methods of modulation.

EFFECT: enhanced reliability of signal recording and reproduction.

64 cl, 18 dwg

FIELD: technologies for manufacturing optical disks for storing information, in particular, development of fluorescent substance and method for manufacturing WORM-type optical disks based on it.

SUBSTANCE: fluorescent multilayer substance on basis of organic dyers with polymer linking component for optical data storage disks of type WORM with fluorescent reading, in accordance to first variant, has two-layered light-sensitive polymer composition inside a track, formed in transparent film made of refractory polymer. First layer has hard solution of fluorescent dyer. Second layer is a combined solution of light absorbent and fluorescence extinguisher. Polymer linking component belonging to first layer has substantially reduced melting temperature in comparison to polymer linking component belonging to second layer. In accordance to second variant, fluorescent multilayer substance is made sensitive to polarization of laser beam, enough for controlling processes of reading and recording information in a fluorescent WORM disk due to polarization of laser beam. Also provided is method for manufacturing one-layered optical disk of type WORM, basically including forming of a fluorescent layer in two stages. Firstly, lower semi-layer is formed, containing fluorescent dyer, and then - upper semi-layer, containing non-fluorescent dyer, or at the beginning lower semi-layer is formed, containing non-fluorescent dyer, and then - upper semi-layer, containing fluorescent dyer. Non-fluorescent dyer is selected in such a way, that its absorption area mainly coincides with spectral absorption area and/or fluorescence area of fluorescent dyer.

EFFECT: improved efficiency of recording/reproducing systems and information preservation on basis of WORM-type optical disk with fluorescent reading.

3 cl, 2 dwg, 3 ex

FIELD: engineering of information carriers and appropriate reading and recording devices.

SUBSTANCE: variants of information carrier contains information about its configuration recorded thereon as well as information about inertia moment of current information carrier. Recording device contains means for determining physical characteristics of utilized information carrier by reading information about configuration and information about inertia moment from wobbulated groove of information carrier, and recording control means, applying corrections for performing recording process in accordance to physical characteristics of information carrier. Reading device contains means for determining physical characteristics of information carrier by reading information about configuration and information about inertia moment, and recording control means, applying corrections for performing reading operation in accordance to physical characteristics of information carrier.

EFFECT: simple and precise process of determining physical characteristics of information carrier, possible adjustment of reading and recording operations.

4 cl, 93 dwg

FIELD: engineering of devices for information storage.

SUBSTANCE: device for information storage contains disks with information carrying layer mounted with possible rotation relatively to common axis, disks rotation drive, reading and/or recording head, positioned on the side of end of one of edge disks and directed towards the latter by its active zone, and also drive for moving aforementioned head in plane, parallel to rotation plane of disks. Information carrying layer at least on one disk, positioned on the side of head, is made with forming of window, transparent for signal, emitted and/or read by head and having shape matching movement trajectory of head, and disks rotation drive is made with possible independent rotation of disks and holding in position, providing for positioning of window in front of active zone of head.

EFFECT: increased efficiency.

8 cl, 4 dwg

FIELD: engineering of data carrier, and of recording and reading devices, compatible with such a data carrier.

SUBSTANCE: each variant of aforementioned data carrier contains recording track, formed by a stream of recesses on the surface of carrier, data of recess represent information recorded on it, which contains main data and sub-code. In accordance to one of variants, information about physical characteristics of current data carrier is recorded in sub-code. In accordance to other variant, data carrier contains multiple individual reading/recording zones, physical characteristics of which are different, and each one of aforementioned zones contains zones for input, zones for program and ones for output, while in sub-code of input zone of each one of aforementioned zones, information about physical characteristics of appropriate individual reading/recording is recorded as well as information about starting position of input zone of next individual reading/recording zone. Each one of variants of recording device contains a certain device for determining physical characteristics of aforementioned data carrier by reading information about these from sub-code, and each variant of reading device contains aforementioned determining device and device for controlling reading.

EFFECT: increased quality of reading and writing of information.

6 cl, 94 dwg

FIELD: optical recording technologies, namely, engineering of two-layered optical disks with high recording density, and of devices for recording/reproducing from them.

SUBSTANCE: two-layered optical disk with high recording density contains first recording layer and second recording layer, positioned on one side of central plane, dividing the disk in half along thickness, close to surface, onto which light falls. First thickness of substrate from surface, onto which light falls, to first recording layer has minimal value over 68,5 micrometers, second thickness of substrate from surface, onto which light falls, to second recording layer has maximal value less than 110,5 micrometers, while refraction coefficient is within range 1,45-1,70.

EFFECT: minimization of distortion of wave front, provision of possibility of more precise recording of signals onto optical disk or reproduction of signals from optical disk.

8 cl, 10 dwg

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