RU2408090C2 - Recording medium with copy protection information and method of recording and reproducing recording medium - Google Patents

Abstract

FIELD: information technology.

SUBSTANCE: recording medium contains control information which includes copy protection information. This information is recorded in interleaving or alternating sequences of depressions along a wavy line.

EFFECT: prevention of authorised copying of content of a disc.

21 cl, 11 dwg

Description

1. FIELD OF THE INVENTION

The present invention relates to a recording medium, for example, to a BD-ROM optical disc (read-only Blu-ray cinematic disk), which has data recorded in alternating or alternating recesses along a wavy (or zigzag) line, and also to devices and methods for manufacturing, recording and reproducing a recording medium.

2. KNOWN LEVEL OF TECHNOLOGY

Recently, the standardization of optical discs "Blu-ray" rewritable "BD-RE", which are optical discs on which you can record large volumes of high-quality video and audio information, has developed. In the near future, the appearance of discs like "BD-RE" on the market is expected.

On figa shows the structure of the disk "BD-RE", on which there is a region of the landing disk, the area of service data (ICA), the transition region, the zero track, the data region and the final region, located in the order in which they are shown in the drawing .

As shown in FIG. 1B, the service data area (BCA) is located in the innermost annular area of the BD-BE disc, access to which occurs primarily when the disc is loaded into the playback device, and may contain information about the disc, in particular serial number and other additional information pre-recorded by the disc manufacturer.

The zero track can contain several predefined areas, in particular, the first area of protection “Guard 1”, the area of storage of constant and control information “PIC”, the second area of protection “Guard 2”, the second information area “Info 2” and the data area of optimal control laser power "ORS". The first area of protection "Guard 1" and the area of "PIC" are areas with pre-recorded information, while the other areas of the zero track, the data area and the end area are all write-back areas.

In the field of storage of PIC constant and control information, significant permanent disk information is encoded in a wavy (wobbled) groove using the high frequency modulation (HFM) method.

To create a data channel for copied information with sufficient data volume and speed, HFM grooves are modulated in the radial direction by a broadband signal.

As shown in figure 2, the encoding of data in a wavy line is performed by two-phase modulation. In this modulation method, a bit with a value of 0 is represented by a transition at the beginning of a bit cell, and a bit with a value of 1 is represented by a transition at the beginning and middle of a bit cell. Modulated bits are written to the disc by deflecting the groove from its midline, as shown in FIG. The length of each bit cell should be 36T, where T corresponds to the length (duration) of the channel bit in the areas of multiple data recording.

In addition, along with BD-RE discs, a Blu-ray format read-only BD-ROM is being developed. As shown in FIG. 3, a “BD-ROM” disk may comprise an inner region, a seating region, a transition region, an information region, and an edge region.

The information area may further comprise an ancillary data area (ICA), zero track, data area, end area and external area. As in the BD-RE drive, the service data area (BCA) may contain essential information about the DII drive, in particular, the serial number and copy protection information (CPI). If the “BD-ROM” is copy protected, you can request information about the “DII” disc to decode the main data contained in the “BD-ROM” disc.

Information about the disk in the field of storage of constant and control information "PIC" can be recorded in the form of recesses (pits) with a linear arrangement on the track in the same way as the main data, which are recorded in the form of audio / video (A / V) streams in the data area. For example, disk information may turn out to be data modulated in 17РР format, recorded as a block of error correction codes (ECC), of 64 kbytes.

However, in this case, it will take some time for demodulation when reading disk information from the “BD-ROM” disc, because disc information can be demodulated by detecting a high frequency signal.

As described above, disc information contained in the “PIC” service area of the “BD-RE” disc can be encoded in a wavy groove using high frequency modulation (HFM). If the disc information is recorded in the “PIC” service area of the “BD-ROM” disc in the form of recesses with a linear arrangement on the track, the device for reproducing data from the optical disc must be able to use various detection methods to read the disc information depending on the type disc (“BD-BE” or “BD-ROM”). If the wrong detection method is selected, the device for reproducing data from the optical disc cannot detect disc information. For example, if the method for detecting disc information modulated using the high frequency modulation (HFM) method and encoded in the wavy groove of the BD-BE disc is applied to the BD-ROM disc, the device for reproducing data from the optical disc cannot be read disc information recorded in the storage area of the permanent and control information "PIC" in the form of recesses with a linear arrangement on the track.

In addition, if essential information about the DII disc contained in the service data area (ICA) is not read due to a read error, it will be impossible to read the data recorded on the disc. For example, if an error occurs while copy protection information (CPI) is read from the service data area (BCA), it may not be possible to reproduce the main data recorded in the data area, as data cannot be decoded.

In addition, since copy protection information (CPI) recorded in the “PIC” service data area of the disc contains essential data, for example, key data for decoding the main data recorded in the data area, then it does not protect the encoded content recorded on the disc should be easily recognized by some illegal device and copied to another recording medium. To ensure resistance to unauthorized influences, information should be detected only through a predetermined detection method in an officially authorized device.

3. SUMMARY OF THE INVENTION

In embodiments, the present invention is applicable to a recording medium, in particular, a recording medium with a high recording density and / or a read-only format recording medium, for example, a “BD-ROM” disc capable of quickly recognizing disc information necessary for reproducing recorded on content, as well as to methods and devices for manufacturing, recording data on a recording medium and reproducing data from a recording medium.

In embodiments, the present invention is applicable to a recording medium, in particular, a recording medium with a high recording density and / or a read-only format recording medium, for example, a “BD-ROM” capable of reproducing basic data even when it is not possible to read essential information about the disc from one or more sections of the recording medium, as well as to methods and devices for manufacturing, recording data on the recording medium and reproducing data from the recording medium.

In embodiments, the present invention is applicable to a recording medium, in particular, a recording medium with a high recording density and / or a read-only format recording medium, for example, a BD-ROM containing decoding information for decoding content recorded on a recording medium in such a way that decoding information cannot be copied to another recording medium and / or other types of recording media, as well as to methods and devices for manufacturing, recording data on a recording medium and reproducing data from the recording medium.

In embodiments, the present invention is applicable to a recording medium, in particular, a recording medium with a high recording density and / or a read-only format recording medium, for example, a BD-ROM containing disc information encoded in recesses (pits), located along the wavy line, in some areas of the recording medium, for example, in the area of service data "PIC", as well as to methods and devices for manufacturing, recording data on a recording medium and reproducing data from a recording medium.

In embodiments, the present invention is applicable to a recording medium, in particular, a recording medium with a high recording density and / or a read-only format recording medium, for example, a “BD-ROM” containing essential disc information in more than one area, for example , in the area of service data (ICA) and other areas other than the area of service data (ICA), as well as methods and devices for manufacturing, recording data on a recording medium and reproducing data from a recording medium.

In embodiments, the present invention is applicable to a recording medium, in particular, a recording medium with a high recording density and / or a read-only recording medium, for example, a “BD-ROM” containing copy protection information encoded in recesses (pits) ) located along the wavy line, as well as to methods and devices for manufacturing, recording data on a recording medium and reproducing data from a recording medium.

In embodiments, the present invention is applicable to a recording medium, in particular, a recording medium with a high recording density and / or a read-only format recording medium, for example, a BD-ROM containing copy protection information encoded in discontinuously formed arrays chains of recesses located along a wavy line, as well as to methods and devices for manufacturing, recording data on a recording medium and reproducing data from a recording medium.

In embodiments, the present invention is applicable to a recording medium, in particular, a recording medium with a high recording density and / or a read-only format recording medium, for example, a “BD-ROM”, which contains recesses formed along the tracks with recorded thereon data, the data including copy protection information intended for encoding and / or decoding, wherein the recesses formed in some parts of the tracks are shifted to the left and / or right relative to the center line of the track to form discontinuous or alternating chains of recesses located along a wavy line, where the key data for encoding and / or decoding is encoded in the deviation configuration of these chains of recesses shifted relative to the center line of the track, as well as to methods and devices for manufacturing, recording data on a medium recording and reproducing data from a recording medium.

In embodiments, the present invention is applicable to a method of manufacturing a recording medium, in particular a high density recording medium and / or read-only recording medium, for example, a “BD-ROM”, including the steps for forming recesses (pits) located along the tracks with data recorded thereon, the data including copy protection information for encoding and / or decoding, in which recesses formed in some parts of the tracks are shifted relative to the track center line to the left and / or right to form therein alternating or alternating recesses chain along a wavy line, wherein the key data encoding and / or decoding the encoded configuration deviation of said recesses, shifted relative to the track central line.

In embodiments, the present invention is applicable to a method of reproducing data from a recording medium, in particular a high density recording medium and / or a read-only recording medium, for example, a “BD-ROM”, including the steps of using data recorded in the recesses formed along the tracks, the data including copy protection information for encoding and / or decoding, in which recesses formed in some parts of the tracks are centered the left track of the track to the left and / or right to form alternating or alternating chains of recesses located along a wavy line in which the key data for encoding and / or decoding is encoded in the deviation configuration of said recesses shifted relative to the center line of the track

In embodiments, the present invention is applicable to a method of recording data on a recording medium, in particular, a high-density recording medium and / or a read-only recording medium, for example, a “BD-ROM”, including the steps of writing data to recesses formed along the tracks, the data including copy protection information for encoding and / or decoding, in which the recesses formed in some parts of the tracks are shifted to the left and / or forward relative to the center line of the track Avo, to form alternating or alternating chains of recesses located along a wavy line in which the key data for encoding and / or decoding is encoded in the deviation configuration of these recesses shifted relative to the center line of the track.

4. Brief Description of the Drawings

The accompanying drawings, included to provide a better understanding of the invention, illustrate preferred embodiments of the invention and, together with the description, serve to explain the principles of the present invention.

In the drawings:

On figa and 1B presents the structure of a conventional disk "BD-RE";

Figure 2 shows a groove made in the service data area (PIC) of the BD-RE disc using the high frequency modulation (HFM) method;

Figure 3 presents the areas provided on the disk "BD-ROM";

FIGS. 4A-4F illustrate several data formats recorded in a service data area (PIC) of a “BD-ROM” in accordance with embodiments of the present invention;

5 illustrates an example in accordance with an embodiment of the present invention, in which copy protection information is encoded in the form of discontinuously formed arrays of chains of recesses along a wavy line;

6 illustrates a data structure of a physical cluster of a BD-ROM in accordance with an embodiment of the present invention;

7 illustrates information encoded in recesses along a wavy line and a circuit for detecting information in accordance with an embodiment of the present invention;

Fig. 8 illustrates information encoded in recesses linearly located on a track and a circuit for detecting information in accordance with an embodiment of the present invention;

FIG. 9 illustrates disc information fields recorded on a “BD-ROM” in accordance with an embodiment of the present invention;

10 illustrates disc type information recorded in a service data area (BCA) in accordance with an embodiment of the present invention and

11 illustrates a block diagram of an apparatus for reproducing data from optical discs capable of reproducing data from BD-ROM discs, in accordance with an embodiment of the present invention.

5. Examples of the implementation of the present invention

In order to fully understand the present invention, preferred embodiments are described in detail below with reference to the accompanying drawings.

According to exemplary embodiments of the present invention, a BD-ROM may comprise an inner region, a seating region, a transition region, an information region, and an edge region, as described above with reference to FIG. 3. As illustrated in FIG. 4A, essential “DII” information, in particular, the serial number of the disc and copy protection information recorded in the service data area (BCA), are copied at least once to the storage area of the constant and control information “PIC” located in the information area. The copy protection information may be a key value necessary for decoding the encoded main data of the audio and video streams recorded in the data area.

Information about copy protection may not be recorded in the area of service data (ICA), but recorded only in the storage area of the constant and control information "PIC", as illustrated figv. The copy protection information may also be referred to as the “ROM mark” and may include an additional “CPI flag” (CPI flag) indicating whether copy protection information is recorded.

As shown in FIG. 4C, the information contained in the “PIC” constant and control information storage area can be partially recorded as a chain of indentations along a wavy line (or as indentations along a zigzag line) and partially as a chain of indentations with a linear arrangement on a track.

In carrying out the present invention, the storage area of the PIC constant and control information may comprise 2720 data clusters. The first cluster may contain disc information recorded as a chain of indentations along a wavy line using a two-phase modulation method. Other clusters may contain disk information modulated in 17РР format, and copy protection information, which has 64 Kbyte error correction code (ECC) blocks and is recorded as a chain of indentations with a linear arrangement on a track, for example, disk information, recorded in the form of a chain of recesses along a wavy line can be detected using the detection method using a bipolar signal, and disc information recorded in the form of a chain of recesses with a linear arrangement on a track can t be detected using the detection method using RF signals. A bipolar signal usually has harmonics of a lower frequency than the RF signal.

In the practice of the present invention, essential DII disk information, additionally copied to the PIC constant and control information storage area, can be encoded in a chain of recesses along a wavy line in order to prevent its recognition by a detection method using RF signals.

Figs. 4D, 4E, and 4F illustrate several different examples of data formats. In FIG. 4D, essential information about a “DII” disc is encoded in a chain of recesses along a wavy line, and information about a disk is encoded in a chain of recesses with a linear arrangement on a track. In FIG. 4E, essential information about the “DII” disc and part of the disc information are encoded in a chain of indentations along a wavy line. 4F, both the DII information and the disc information are encoded in a chain of recesses along a wavy line.

The copy protection information, in one example, is the ROM mark, to prevent easy recognition by conventional detection methods, it can be encoded in a chain of dimples discontinuously located along a wavy line to prevent it from being easily detected by conventional detection methods, while data recorded in the data zone will be recorded as recesses with a linear arrangement on the track.

5 illustrates an embodiment of the present invention, where copy protection information is encoded in the form of discontinuously formed arrays of chains of recesses along a wavy line.

As shown in FIG. 5, it is preferable that instead of a continuous structure of the recesses located along the wavy line, an intermittent structure of the recesses located along the wavy line is recorded in the zone to ensure secrecy or resistance to unauthorized influences, for example, to prevent easy recognition by conventional detection methods .

As shown in figure 5, the structures of the recesses with a linear arrangement on the track "An" and the structure of the recesses located along the wavy line, "Bn" are formed alternately, and the length of the structures of the recesses with a linear arrangement on the track is taken longer than the length of the structures of the recesses located along the wavy line , in order to obtain different durations. Therefore, when using the conventional detection method, indentations along a wavy line in which copy protection information is encoded are perceived as noise signals.

All structures of the recesses with a linear arrangement on the track can be made of the same length and all structure of the recesses located along the wavy line can be made of the same length. If the structures of the recesses have different lengths, i.e. “An” ≠ “Am” (n ≠ m) and “Bn” ≠ “Bm” (n ≠ m), the location of the structures of the recesses located along the wavy line becomes irregular. This can enhance the protection of copy protection information in that the probability that special information is encoded in recesses along a wavy line becomes lower.

There are various other modulation methods that can be used to encode copy protection information in recesses along a wavy line. Analog modulation methods include amplitude modulation (AM), frequency modulation (FM), and digital modulation methods include Pulse Code Modulation (PCM), Minimum Shift Keying (MSK), and Binary Phase Shift Keying (BPSK).

Although the same modulation method can be applied to all recess location structures along the wavy line, to enhance the security of copy protection information, the recess location structures along the wavy line can be encoded using different modulation methods. For example, in FIG. 5, the first recess arrangement along the wave line “B1” can be encoded using the amplitude modulation (AM) method, and the second recess arrangement along the wave line “B2” can be encoded using the frequency modulation method “FM” etc.

In order to reduce possible read errors, in the practice of the present invention, the same data is periodically encoded in recess structures located along a wavy line.

These zones with recesses located along the wavy line and these zones without recesses located along the wavy line are combined with each other or a plurality of such zones are combined, and then the presence of the copy protection bit can be determined. For example, the recording zone of the grooves located along the wavy line corresponding to the data bit is recorded dispersed over several zones, and these grooves located along the wavy line are formed so that the swing amplitude (deviation from the midline) is small, and then the bit can be recognized by detecting it with a low-level bipolar signal and integrating this signal.

In an embodiment, the amount of copy protection information is not more than 128 bits, but if header information and redundant data for an error correction code (ECC) block is added, then the amount may increase to 1 kilobyte.

As shown in FIG. 6, the physical cluster of a BD-ROM may have an approximate capacity of 64 kilobytes and contain 16 minimum addressable units. Further, each minimum addressable unit may include 31 data frames. As a result, if in order to write a byte of copy protection information, the first data frame (data frame No. 0) of each minimum addressable unit is encoded in recesses along the wavy line, the physical cluster can store up to 16 bytes.

Therefore, copy protection information of 1 kilobyte can be placed in 64 clusters. Since a typical PIC permanent and control information storage area can contain 2720 clusters, there is enough space in the PIC permanent and control information storage area for at least one recording and storage of copy protection information. In addition, copy protection information can be recorded more than once in the permanent and control information “PIC” storage area to increase the reliability of the recorded data.

In other embodiments of the present invention, it is also possible to generate data frames other than the first data frame of each minimum addressable unit in the form of recesses along a wavy line, or more than two data frames of each minimum addressable unit, in order to encode copy protection information in the form of recesses located along a wavy line.

Instead of encoding copy protection information in a fixed data frame within each minimum addressable unit, this information can also be encoded in an arbitrary data frame within each minimum addressable unit. In this example of an embodiment of the present invention, the appearance of low-frequency signals generated by recesses located along a wavy line is irregular, and thus improves information security, as described above.

Copy protection information can also be recorded as recesses with a linear arrangement on the track. In this embodiment of the present invention, the copy protection information can be encoded before it is recorded, and the key value for decoding the encoded copy protection information can be encoded in the recesses along the wavy line, thereby preventing unauthorized copying of the content.

Fig. 7 illustrates disk information encoded in recesses along a wavy line using a two-phase modulation method and an information detection circuit, wherein the value “0101” taken for example is encoded using two-phase modulation, for example, in the form of an HFM modulated groove two-phase modulation method. In this example, the data bit is written in the form of 36T labels and spaces (36 time slots), including six 3T labels. Six recesses representing “1” and six recesses representing “0” are shifted relative to the center line of the track in opposite directions.

As shown in FIG. 7, the structure obtained by biphasic modulation is different from the structure illustrated in FIG. 2. That is, in the method of FIG. 2, a bit value of “0” is represented by a transient at the beginning of a bit cell, and a bit value of “1” is represented by a transient at the beginning and middle of a bit cell. On the other hand, in the method illustrated in FIG. 7, a bit value of “0” represents a transition from a low level at the start to a high level in the middle, and a bit value of 1 is represented by a transition in the opposite direction. The combination of bits consists of data to detect information recorded in the form of recesses (pits) along a wavy line. The information may be copy protection information, i.e. key data for decoding the main data recorded in the data area of the recording medium, as shown in FIG. 4A to 4F.

That is, data in recesses located along a wavy line can only be reproduced or recognized when two-phase modulation data modulated using high frequency modulation (HFM) methods are normally recognized and reproduced. In addition, reproduction or decoding of the main data is possible only when the copy protection data recorded in the recesses along the wavy line is reproduced or recognized using normally recognized or reproduced data subjected to two-phase modulation.

Meanwhile, if the information is encoded in the recesses, the successive appearance of a chain of recesses of the same length may be unacceptable, and therefore one after another chains of recesses of different lengths appear. In this embodiment, for encoding data in recesses located along a wavy line, the positions of the recesses for recording data can also be shifted by 18T.

The laser beam reflected by the recesses located along the wavy line is converted by photodetectors 13-16 into electrical signals.

The electrical signals can be amplified by a bipolar detection circuit in which the signals (Ea + Eb) and (Ec + Ed) are amplified separately by the amplifiers 10 and 11, then a differential signal of the two amplified signals [(Ea + Eb) - (Ec + Ed)]. Data encoded in the recesses along the wavy line is obtained by comparing the difference signal 501 with a threshold value.

Similarly, essential DII disk information and / or disk information (or other information) encoded in recesses along a wavy line can be obtained using a push-pull circuitry that is used to create a tracking error signal without additional error correction and demodulation procedures.

If an error due to scratches or other defects of the disk occurs at the time of accessing the service data area (BCA) of the BD-ROM, essential information about the DII disk can be read from the storage area of the PIC permanent and control information, and data recorded on a disc can be reproduced using the read information. As a result, the main data recorded in the data area can be decoded using the decoding key contained in the essential information about the DII disc recorded in the PIC constant and control information storage area.

Since the data encoded in the recesses along the wavy line, for example, essential DII disc information and / or disc information, is not extracted by demodulation, it is not copied when the contents of the BD-ROM disc are copied onto another multiple media recordings, and therefore, encoded data copied to this rewritable recording medium, cannot be decoded, thereby preventing unauthorized copying of the contents of the BD-ROM disc.

The disc information and copy protection information encoded in the recesses with a linear arrangement on the track, as shown in FIGS. 4C-4E, can be detected by the circuit shown in FIG.

The laser beam reflected by the recesses with a linear arrangement on the track is converted by photodetectors 13-16 into electrical signals, and the electrical signals (Ea, Eb, Ee and Ed) are added together and amplified using one or more summing amplifiers 20, 21 and 22. High-frequency the signal (Ea + Eb + Ec + Ed) from the output of the summing amplifier 22 is converted into a binary pulse sequence by a high-frequency unit 23 and converted into digital data using a clock signal synchronized with the binary signal. The original disc information and copy protection information are extracted from the digital data by the device 24 error correction codes and demodulation.

The disc information and copy protection information encoded in the recesses with a linear arrangement on the track can be read in the same way as the main data recorded in the data area is read.

The disc information may include an identifier (ID) of disc information, disc information format information, disc type identifier, disc capacity / version data, etc., as shown in FIG. 9. A standard 3-byte identifier reflecting the type of optical disc may be recorded in the overhead data area (BCA) as 2-bit data, as shown in FIG. 10.

For example, if the 2-bit data value is 00b, the corresponding optical disc is a “BD-RE" disc. If the value of the indicated data is 01b, the corresponding optical disc is a write-once disc “BD-R”. If the value of the indicated data is 10b, the corresponding optical disc is a “BD-ROM” disc.

Data about the amount of disk information and a flag indicating whether this is the last disk information can be entered in the backup disk information field.

Figure 11 shows a General block diagram of a device for reproducing optical discs, which contains an optical device 30 for reading information, a system 31 for playing a video disc (VDP) and an analog-to-digital converter 32. When loading an optical disc, a system 31 for playing a video disc (VDP), performing functions of signal processing and servo control, recognizes information about the type of disk recorded in the area of service data (ICA), and performs the appropriate initialization of servo control in accordance with a certain type drive.

Video disc playback system (VDP) 31 can detect disc information encoded in recesses along a wavy line, for example, key data for encoding and / or decoding the main data of a data area, in the storage area of the PIC constant and control information, from bipolar signal.

In the case where the information about the amount of disk information and the flag indicating whether the disk information is the last are assigned to the backup field, the disk information and copy protection information recorded in the PIC storage and control information storage area can be defined more accurately using information recorded in the backup field.

In another embodiment, it is possible to assign a transition zone for separately detecting disc information and copy protection information to the storage area of the permanent and control information “PIC”.

If the copy protection information is encrypted and encoded in the recesses with a linear arrangement on the track, the video disc playback system (VDP) 31 determines a decoding key encoded in the recesses located along the wavy line in the storage area of the PIC constant and control information, as shown 7, decodes copy protection information read from recesses with a linear arrangement on a track, and stores decoded copy protection information in memory. When reproducing the master data recorded in the data area, the master data is decoded using the copy protection information stored in the memory.

Thus, in accordance with exemplary embodiments of the present invention, when applied to a high recording density disc, a read-only disc and / or an optical disc, as well as a method for recording disc information, it is possible to repeatedly record essential information necessary to protect content recorded on disk, and encoding information in the recesses located along the wavy line, thereby increasing data reliability and preventing unauthorized copying of the contents of the disk.

Despite the fact that certain examples of the implementation of the present invention have been presented, it is obvious that the present invention can be implemented in other forms without departure from its essence and the main characteristics specified in this document. Thus, the embodiments of the present invention in all aspects should be considered illustrative and not limiting, the scope of the invention is determined by the appended claims, and therefore all changes that correspond to the values of the claims and their equivalents are covered by the claims.

Claims (21)

1. A recording medium containing control information, in which the control information includes copy protection information for use in generating and / or processing user data that is copy protected, and the control information further includes indicator information indicating whether or not the recording medium contains copy protection information, the copy protection information and indicator information being made in the form of a wavy pattern. 2. The recording medium according to claim 1, in which information about copy protection is recorded on the recording medium several times. 3. The recording medium according to claim 1, wherein the copy protection information is key data intended for use in generating and / or processing user data that is copy protected. 4. The recording medium according to claim 1, in which the indicator information and / or information about copy protection is recorded using the phase modulation method. 5. The recording medium according to claim 1, in which the indicator information is recorded on the zero track of the recording medium. 6. The recording medium according to claim 2, in which the information about copy protection is distributed recorded in the data block, the data block contains many minimum addressable units, each of which contains many data frames, and information about copy protection is distributed on the first data frame. 7. The recording medium according to claim 1, in which the control information further includes essential disc information necessary for reproducing user data. 8. The recording medium according to claim 7, in which information about copy protection and essential information about the disc are copied to the area on the zero track of the recording medium. 9. A method of reproducing data from a recording medium, which consists in the fact that:
(a) use copy protection information for use in generating and / or processing user data that is copy protected, and when performing step (a), further use indicator information indicating whether or not the recording medium contains copy protection information; and
(b) reproduce user data based on copy protection information,
moreover, information about copy protection and indicator information is made in the form of a wavy pattern. 10. The method according to claim 9, in which information about copy protection is recorded on the recording medium several times. 11. The method according to claim 9, in which the indicator information and / or information about copy protection is recorded using the phase modulation method. 12. The method according to claim 10, in which step (a) includes an operation (a ') for detecting copy protection information if the indicator information indicates that the recording medium contains copy protection information. 13. The method according to item 12, in which step (a) further includes an operation (a ") to detect essential disk information necessary for reproducing user data. 14. The method of claim 13, wherein in step (b), user data is reproduced based on copy protection information and essential disc information. 15. The method according to claim 9, in which information about copy protection is distributed recorded in a data block, the data block contains many minimum addressable units, each of which contains many data frames, and information about copy protection is distributed on the first data frame . 16. An apparatus for reproducing data from a recording medium, comprising:
an optical head configured to generate electrical signals corresponding to data read from the recording medium by converting the beam reflected from the recording medium into electrical signals; and
a data processing device for processing generated electrical signals into control information and user data, wherein the control information includes copy protection information for use in generating and / or processing user data that is copy protected, and the control information further includes itself indicator information indicating whether or not the recording medium contains copy protection information, moreover, information about copy protection ia and indicator information are formed in the form of a wavy pattern; and
wherein said data processing device is configured to process copy-protected user data based on copy protection information if the indicator information indicates that the recording medium contains copy protection information. 17. The apparatus of claim 16, wherein said data processing device is configured to use copy protection information as key information for use in generating and / or processing user data that is copy protected. 18. The apparatus of claim 16, wherein said data processing device is configured to detect data corresponding to indicator information using electrical signals generated by the optical head from the zero track of the recording medium. 19. The apparatus according to clause 16, in which information about copy protection is distributed several times distributed in the data block, the data block contains many minimum addressable units, each of which contains many data frames, and information about copy protection is distributed on the first data frame and said data processing apparatus is configured to detect copy protection information of at least one first data frame. 20. The apparatus according to clause 16, in which the control information further includes essential information about the disk necessary for reproducing user data, and the specified device for processing data is configured to use essential information about the disk when playing user data. 21. The apparatus of claim 20, wherein the copy protection information and essential disc information are copied to the region on the zero track of the recording medium, and said data processing apparatus is configured to detect data corresponding to copy protection information and essential information about the disc, in this area on the zero track, using electrical signals generated by the optical head.

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