Media containing auxiliary information, a reader and a method of manufacturing such media

 

The invention to the storage medium, the reading device and method of manufacturing the media. The media contains a track support structures that share a specific track on the field. Reference patterns represent information related to the location on the storage media. The information in the structures presented in a certain way in advance. The support structure additionally contain auxiliary information. The latter refers to the first mentioned information and includes the control information. The control information is used in the processing of information to prevent use of unauthorized copied the information medium which does not contain auxiliary information. The reader includes demodulation means for recovering the auxiliary information. In the manufacture of the medium in the support structure additionally include the specified auxiliary information. The technical result - the ability to recover the auxiliary information intended to prevent the use of unauthorized copied media, using simple tools. 3 with usamu a track for recording structures, in which the information is presented in a certain way in advance, and to record relevant supporting information.

In addition, the invention relates to a reading device for reproducing information from the information carrier, the information carrier includes a track for recording structures in which information is presented in a certain way in advance, and to record relevant supporting information, and this device includes readers for reading structures and demodulation means for recovering data from a signal read in a certain way in advance, and means for recovering the auxiliary information.

In addition, the invention relates to a method of manufacturing a data carrier which includes a track for recording structures in which information is presented in a certain way in advance, and to record relevant supporting information, and the content of the auxiliary information based on the content of the information itself.

This information carrier and the reading device is known from the patent EP-0545472. The known data carrier includes in advance of podgotovlyena groove appointment, recorded certain in advance the way the information is presented in the form of optically readable structures which are formed by modifying the first physical parameter, such as the relative height of the scanned surface. Groove appointment is changing the second physical parameter, such as amplitude of vibration in the transverse direction, which is also known as beating. Run-out groove appointment have frequency modulation (FM), and this modulation displays auxiliary information that is associated with the basic information in the form of, for example, code-decryption to recover the information stored in the encrypted information. The known device includes readers for reading structures and restore tool to restore the supporting information. The known device and the media constitute a system for the controlled reproduction of information. For this purpose, the device includes means for reproducing information based on auxiliary information. If the information is copied to a recordable data storage medium, the information from this copy will not be reproduced as the information.

The known device has the disadvantage due to the need to recover the auxiliary information on the changes to the second physical parameter, in which auxiliary information is presented is different from the recorded structures way. Consequently, funds for restoration of auxiliary information are of high complexity.

The aim of the invention is to develop a means for the controlled reproduction of information, in which the restoration of the auxiliary information can be carried out by simple means and at low cost. To achieve this goal, the information carrier in accordance with the present invention differs in that the information carrier includes a support structure, which divide the track to the field unit for recording information, and in these support structures supporting information is presented in a certain way in advance. To achieve this goal, the reading device in accordance with the present invention differs in that the demodulation means includes means for recovering the auxiliary information available on the storage media supporting structures, and these support structures divide the track Itanium differs what the media has their supporting structures, which divide the track to the field unit for recording information, and in these support structures supporting information is presented in a certain way in advance.

The implementation of the invention may lead to the restoration of auxiliary information from the media information using tools demodulation, so as the information itself, and the supporting information is presented in a certain way in advance. This has the advantage that the recovery of the auxiliary information can be carried out by simple means.

Another variant implementation of the medium in accordance with the present invention differs in that the auxiliary information includes control information that is associated with the functional purpose of the information, and control information used in the processing of information for the implementation of this function. This option has the advantage that the possibility of using information, for example, video, or computer program depends on the ancillary information. In result, it becomes impossible to use the media copy inpatie with the present invention differs what the media is rewritable information can be recorded by the recording process, and their supporting structures are indelible. The storage medium may be, for example, optically readable type for which the reference patterns in the manufacturing process should be recorded only once or recorded indelible way. This option has the advantage that the auxiliary information can no longer be subjected to changes.

A further variant of the implementation of the medium in accordance with the present invention differs in that the supporting structure comprise a label, the centers are offset from the middle of the track. The standard recording device is not intended for the introduction of labels in positions offset. This variant has the advantage, that such a standard recording device cannot be made up, containing the supporting information.

A further variant of the implementation of the medium in accordance with the present invention differs in that the reference patterns are present only in certain in advance of track record. This option has the advantage that cha is mangartom recording information for example, DVD-ROM (Digital Versatile Disk - persistent Storage Device - UCD-ROM). Defined in advance of the track, placed, for example, in the initial region, and includes supporting information, according to the invention will be available to readers in read-only mode, whereas the ability to produce unbiased reading of information according to the standard using the standard reader is saved.

An implementation option of the reader in accordance with the present invention differs in that the device includes means for processing data and/or auxiliary information based on auxiliary information. Information can then be encoded (scrambled or encrypted), and the auxiliary information may include a decoding key. This option has the advantage that the reader can decode the information and/or supporting information, while the standard reader has no access to information. In addition, the reading device according to the invention can read and process the supplemental information output device. This option has the advantage that the user cannot access the auxiliary information to create illegal copies.

The following variant of the implementation of the reader in accordance with the present invention differs in that the auxiliary information contains control information that is associated with the functional purpose of the information itself, and the means of information processing executed with the ability to perform this function, depending on the control information. This option has the advantage that the processing of information such as video information, or computer programs produce depending on auxiliary information. In the copy of the media without auxiliary information not suitable for use, which provides protection from illegal copying.

A further variant of the implementation of the reader in accordance with the present invention differs in that the device includes means to identify the location of the supporting structures relative to the recording tracks or in relation to other supporting structures. This option has the advantage that illegal kop is olagunju supporting structures, for example, not having a transverse shift or mutual alignment in adjacent turns of the track.

These and other aspects of the invention will become apparent and will be explained later in the description with reference to variations in its implementation.

In Fig.1A-1C shows the recordable media type.

In Fig.2 schematically shows the supporting structure.

In Fig.3 shows a reading device for reproducing information.

In Fig.4 shows a reading device for playback and processing of information.

In Fig.5 shows the layout of the device for playback and processing of computer programs.

Figures of the number of items in the drawings, the symptoms of which have already been described, are treated as references.

In Fig.1A shows the carrier 1 information optically read type having a disk shape. The storage medium includes designed to record the track 9, which has the form of spiral coils. The coils can be located not in the form of spirals and concentric. Track 9 is indicated on the media path tracking, which enables the read/write head to follow the track 9 during scanning, and path tracking can be the R, application of regular substructures, which periodically cause the appearance of signals in the servo tracking (track track). In Fig.1b shows a cross-section of the information storage device 1 along the line b-b, on which the transparent substrate 5 is covered with the recording layer 6 and a protective layer 7. The groove 4 of the provisional entries can also be formed as a raised area or be different from the surrounding areas of the properties of the material. In addition, there is the possibility of recording information alternately in underground or elevated part of the so-called path tracking groove surface (Groove and Land). In this case, the depth of the track tracking 4 (groove) has the same width as lying between a raised part (surface), and the height of the track tracking change from the surface to the groove or Vice versa, usually once per round. Information for the media information is presented in the form of optically readable labels. In this case, the binary information signal are, for example, in the form of position and/or the length of the labels. Labels can be entered using the press, as is usually done for read-only CD-ROM CD (CD), such as CD-ROM (CD-ROM), on which information and dorogovichi layer 6 can be recorded optical or magneto-optical method using a device unit for recording information. For the formation of structures in the track 9 each label form one or more recording pulses with a constant or variable energy account, which depends on the length of the label. An example of the recorded media can serve as erasable CD, which has a layer of material with phase change.

The supporting structure 2, which divide the track on the field, on the so-called sector, unit for recording information are evenly spaced along the path tracking. Sector between the support structures 2 can be chosen so small that is suitable for practical use, the amount of information placed in the sector, is a block of, for example, 512 bytes or 2 Kbytes. A large cell may also include multiple such cells, for example, 2 Kbytes and have a total length of, for example, 16 or 32 Kbytes. A large cell can contain additional characters for error correction, and error correction is valid for the entire length, which is large compared with the expected errors. In the result it is not possible to select an arbitrary small cell with error correction. In the practical implementation will be used a number of supporting structures at every turn. In Fig.1A in which contains the address information about the location on the storage media. The address information gives, for example, the address located after the reference structure of the sector and is represented as a sequence of labels 8. The address information is of conventional type, for example, a first synchronization component, followed by the address and the symbol error detection. Using this information, the addresses can be checked the position of the read/write head, thus information can be written in the desired sector.

In Fig.2 schematically shows a variant implementation of the supporting structure 2 in multiple parallel tracks track tracking groove-surface". The upper track 21 is a groove, which continued in the form of grooves 26 after the header 20 sector support structures. The second track 22 is above the surface and continued after the title sector as the surface 27. At least one support structure on stage will be the alternation of the surface-groove" in the header of the sector, in this case, the upper groove 21 continue as the surface 26 and the second track 22 continue as deepening. Therefore, the supporting structure when the rotation must be combined in the adjacent tracks, and further reference patterns round not Tr is the midpoint of the track 9. In the case of offset areas the signal reading will be less strong, but still sufficient for recovery recorded in these areas address information. In the case of composite structures, the shift step 28 tracks by 50% can be considered as an advantage. In this case, obviously get another signal read compared to structures without shear, and the shifted region of the two adjacent tracks are read equally well. It is shown in Fig. 2 the supporting structure is formed by two regions 23 with a shift upwards, the two regions 24 with offset down and to the area of 25 without an appointment. In the case of supporting structures without mutual alignment should be used less shift or shift must be absent. In accordance with the invention, the auxiliary information is included in the supporting structures, for example, one having offset regions 23 or 24 can be used for auxiliary information. In this case, the auxiliary information are in the form of optically readable labels like presents information in sectors. The information are, for example, in the form of position and/or the length of the labels, just as they do for KD (CD). As auxiliary informacini the same demodulator. Auxiliary information can contain, for example, the key decoding, serial number or access codes. In the embodiment of the invention, in which the address information in the support structure recorded consistently or repetitive, one of the duplicate records can then be replaced by the auxiliary information. In the embodiment, the medium in accordance with the invention, the auxiliary information contains control information necessary to use the information. Control information associated with the ultimate functionality of the information for the respective field of application. This has the advantage that the reproduction of information and its processing can be checked by the user in a suitable for this purpose, the device, as the operation control information can only be implemented in this device. For example, in the case of video compression end of the operation, the produced information is unpacking and restoring the video signal. Attaching control information, at least one of these operations, it is possible to perform appropriate protection from nelegalkoi information. It is fundamentally different from known prior art systems, such as, for example, bit perfect copy, which means that the information should not be able to copy and write in fixed position on the information carrier, as in this case, it is easy to carry out illegal modification. In another embodiment of the invention, the information includes the computer program and the supporting information required, produce when the program in the computer. Then, when their work when certain operations are performed, the program invokes the auxiliary information. As auxiliary information is well-suited control information. Then a computer program can be installed on a computer system (hard drive), this is true, but to run the program (or its parts) need to have the original media.

System for the controlled reproduction of information in accordance with the present invention includes a storage medium read-only type, which contains information and include supporting information pornprivate way for example, pressing as CD (CD), and in the manufacture of the reference patterns introduce auxiliary information. Storage medium read-only type in accordance with the invention includes auxiliary information contained in the supporting structures. This is an advantage, because when playing there is no possibility of free get this information on the output device and, therefore, it is not available for copying. If, for example, a personal computer PC via the media player, the CD-ROM (CD-ROM) read video CD (Video CD), auxiliary information for PC is not available. In addition, there are media recordable type and device for recording and storage media after they made an entry can be in most cases reproduced in the reader, as information on them in the same way, that is, for example, KD-03 (CD write-once) (CD-WO). Such a device entry in the General case cannot write arbitrary supporting structures. In the embodiment, the recordable information carrier according to the present invention the support structure of the information recordable type. This has the advantage consisting in the fact that although the recording device may have the ability to record any arbitrary structure, there is no any possibility to delete the reference structures and introducing them again to include additional information. The embodiment of the invention is a storage medium that includes sensitive layer of the material, shifting the phase, and the reference patterns obtained by stamping. Another embodiment of the invention is a storage medium that includes sensitive layer write-once, in which the supporting structure is already recorded in the process of its manufacture. In another embodiment, media support structure, containing supporting information, have shift compared with the following support structures, while the standard recording device cannot produce such deviation. The first example of the shift is that, when some of the reference patterns shifted in the cross-track direction, as described above. In another example, in a system in which the rotation of the storage medium when reading and writing control standard way to ensure regime postoi speed (STS). In the PLC mode the rotation speed of the disk coordinate so that the speed of the track was relatively constant recording, while in mode STS constant speed. When the standard recording device with PLC can write supporting structures, this device still will not be able to write structures with pus, because the speed control is carried out in the PLC mode. An implementation option media includes the aforementioned support structure with a shift only in certain in advance part of the track. This particular in advance can be the initial region or end region, or special shaped as a circle part of the recording area on the storage media. Reader in accordance with the invention will read the reference patterns in this part, includes auxiliary information, at the same time have the ability to produce unbiased reading of information with further tracks using the standard reader. The part of the track, not including the supporting structure, may have a different format, for example according to the existing standard of recording information, for example, WCD-ROM (DVD-ROM). If IP is to detect illegal copies, the reader should verify that if there are any patterns in the mode of pus and, for example, if they are correct, then make it from track to track, skipping multiple tracks and compare synchronization supporting structures with a period of rotation of the information carrier. When there is a displacement in the transverse direction using the reference patterns and the reference patterns of the STS must have an accurate mutual alignment from one coil to another coil track. It is important to ensure reliable read offset structure or neighboring basic data as mutually nesovremennye patterns with offset would cause radial crosstalk when reading. To detect illegal copies, the reading device according to the invention checks the transverse displacement of the structure, for example, by analyzing the signals of poderaccio detect differences in the reflected radiation caused by structures with an offset compared to structures without bias. As a result, the need for records supporting structures, including supporting information and having an offset supporting structures, leads to nevozmozhno is according to the standard KD, known as CD-03 (CD-R), can record any desired information block in the PLC mode on the whole CD with the possibility of a single record, including headers and timing information in accordance with the standards of KD. However, the recorder KD-03 (CD-R) cannot operate in the mode of the STS, as the speed of rotation and the location of the record information blocks defined by the path tracking in the groove of the appointment. Therefore, the recorder KD-03 (CD-R) may not produce the combination of supporting structures, namely header in the adjacent tracks. In addition, the recorder KD-03 (CD-R) CD-R cannot write any structure with transverse shear. An implementation option of the media information can be written only once, with such patterns shift, also includes user data in a standard for disk read-only" format, the so-called disk with partial ROM (partial ROM disk). The format that provides the possibility of recording could include rules for this part of the ROM. In the ordinary case, a part of the ROM will include supporting structures without shear, like the headers in the standards for having only groove recording disk read-only memory (ROM), the invention to read the media 1 information having the form of a disk. The device includes a block 31 is read to read data blocks from the storage device 1 information. Unit 31 read scans track 9 write beam 30 of radiation. When the scan operation unit 31 read set on track 9 by means of the tracking system of conventional type (not shown). The information storage device 1 rotates, the transmission of the movement carried out by means of a drive, and the unit 31 reads reads track 9 beam 30 and converts the optically readable labels, in the form which presents the information in an electrical signal. In addition, the device includes demodulation means 32 for recovering information. According to the invention the supporting structures include auxiliary information, and demodulation means 32 is carried out restoration information and supporting information in the same way. Means of demodulator 32 is configured to recognize a few types of information: information, address information and auxiliary information. At the output 33 get information blocks, the flow of which is controlled by a system controller of conventional type (not shown). The positioning block Pomogailo information that can be used to issue information blocks. For example, the system controller can verify background information on certain pre-control numbers or control information that can be obtained from the information blocks. If there is no match, then the output 33 will be blocked. In another embodiment, the device to exit 33 serves also supporting information, which is available to the user.

In Fig.4 shows a device in accordance with the present invention for reading the information storage device 1 having the form of a disk, and for information processing. The device described above with reference to Fig.3 device and includes a block 31 reading and demodulation means 32 for recovering information. According to the invention the device includes a processor 43 for processing information, and processing means 44 for processing auxiliary information, and both are connected with the demodulation means 32. In the first embodiment, the device processing tools 44 are made with the ability to perform decoding of an information block, which auxiliary information processing means 44 is iruku information blocks on the key decoding. In the second embodiment, the device processor 43 link to perform due to information operation, for example, if the information blocks contain the compressed video data in standard MPEG2, restores a video signal. The supporting information contains control information, which is necessary for recovery. Without auxiliary information signal cannot be recovered. Illegal copy of the media does not contain auxiliary information, or any other auxiliary information, so the video it can not be restored. In another embodiment, device video contains so-called "watermark", which marked the video. Videos in the preferred embodiment, have any different watermark for their identification, which may include the name of the manufacturer or the time of creation. A watermark can also be formed by particular combinations of compression, which is not in the video without watermark. Such a watermark can be easily introduced when encoding, but it is almost impossible to add or change later, already sian, then checked the watermark control information received from the auxiliary information. Copied illegally videos may be blocked, if the control information does not match the "water mark". Then it is an advantage that the detection of a watermark and verify it with the control information is made directly after reading. In a preferred embodiment, watermark find without full decompression of video data, so the CPU 43 can be more simple type.

In Fig.5 shows a device in accordance with the present invention for reading the information storage device 1 having the form of a disk, and for information processing. The device described above with reference to Fig.4 device and includes a block 31 of the read demodulation means 32 for recovering data, the processor 43 for processing information, and processing means 44 for processing auxiliary information. The device additionally includes a processing unit 50 for processing computer programs, and a processing unit coupled to the output processor 43 and with a system controller (not shown) through the interface. Nositelka supporting information. They may, for example, the key decoding, serial number or access code or perhaps a small portion of the program code (subroutine, object, or module). Because the program requires these essential data, it can work well only when it can be accessed as information blocks, and supporting information. In another embodiment, the processor 43 of the link so that it was carried out by selective forwarding part of the auxiliary information to the user. This is useful, for example, when the reproduction of the information used in a computer system. The fact that you not send all supporting information, provides the best protection information. In this case, when made illegal copy using the lookup routines cannot call all of the supporting information with the media and to create illegal copies of the auxiliary file, which when using illegal copies in the system auxiliary information can be made available. Some of the auxiliary information that can be transmitted freely, may include, for example, to a fixed part of the media or directly to pologitelnui information includes codes, selected computer program at random moments during its execution. If the sample codes are not reproduced or reproduced wrong codes because of the fact that used an illegal copy of the software, the program will stop and, thus, would be useless.

The invention may also be used for media that does not have the form of a disk, such as optical tape or optical cards, which contain the path tracking of the supporting structures. Alternatively, the present invention can be used for magnetic and other media when they contain the path tracking of the supporting structures and in which auxiliary information can be placed in the support structures.

Claims

1. The media containing the track containing the reference patterns that share a specific track on the field for inclusion in these areas of information blocks, and the reference patterns represent information related to the location on the storage medium, and information is presented in the structures defined in advance by the way, characterized in that the supporting, when this auxiliary information applies to the first mentioned information includes control information that is associated with the function of the first information, and control information used in the processing of information to support its functional purpose, ie, to prevent use of the information from unauthorized copied the information medium which does not contain auxiliary information.

2. Media in p. 1, wherein the information includes video information, which contains the control code, and the processing of video data depends on the control code and control information.

3. Media in p. 1, wherein the information includes a computer program, and the execution of a computer program depends on the control information.

4. Media information under item 1, characterized in that the storage medium is optically read media type, in which a predefined way of presenting information includes a representation of the binary information signal in the form of optically readable structures.

5. Media information under item 1 or 2, Otley is et to be carried out in the recording process, while supporting structures are indelible.

6. Media information under item 1 or 2, characterized in that the supporting structure includes a label, the center of which is offset from the middle of the track.

7. Media information under item 1 or 2, characterized in that the supporting structures are only available in certain in advance part of the track.

8. Media information under item 1 or 2, characterized in that the supporting structure adjacent turns of the track are mutually combined.

9. A reading device for reproducing information from the information carrier, which contains a track for recording structures in which information is presented in a certain way in advance, and to record relevant supporting information, and the device includes means for reading for reading structures and demodulation means for recovering data from a signal read in a certain way in advance, and means for recovering the auxiliary information, wherein the demodulation means includes means for recovering the auxiliary information from the storage media supporting structures and supporting structures divide the track to the field unit for recording information the than the supporting information contains control information, which is associated with the function of the first information, and the means of data processing performed with the opportunity to implement this functionality, depending on the control information, i.e., to prevent the use of the first information from unauthorized copied the information medium which does not contain auxiliary information.

10. Reader under item 9, wherein the information includes video information, which contains the control code, and the processing of video data depends on the control code and control information.

11. Reader under item 9, wherein the information includes a computer program, and the means of information processing performed by the execution of this computer program based on the reference information.

12. Reader under item 9, wherein the information includes a computer program, and the means for processing auxiliary information is made with the possibility of sending additional information to a computer program, some in advance of the supporting information blocked.

13. Device is relatively tracks or other supporting structures.

14. A method of manufacturing a storage media that contains the track containing the reference patterns that share a specific track on the field for inclusion in these areas first information blocks, and the reference patterns represent information related to the location on the information carrier, characterized in that the supporting structure includes additional supporting information is presented in a certain way in advance, with the supporting information relates to the first information includes control information that is associated with the function of the first information and the control information is used when processing the first information to support its functional purpose, i.e., to prevent the use of the first information from unauthorized copied the information medium which does not contain auxiliary information.

 

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FIELD: data carriers.

SUBSTANCE: in response to control reading signal received at amplifier input, on output of this amplifier output signal is produced, signal is then formed, reflecting difference between output amplifier signal and support signal. First compensation signal is generated, absolute value of which is proportional to absolute temperature, and second compensation signal, absolute value of which does not depend on temperature during forming estimation signal first compensation signal is summed with signal, reflecting said difference, or is subtracted from it dependently on second compensation signal.

EFFECT: higher precision.

4 cl, 7 dwg

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