RU2302043C2 - Linking zone structure made on carrier only for reading high density records, method and device for manufacturing and reading the carrier - Google Patents

Abstract

FIELD: linking zone structure which is made between data section on high density information carrier of non rewritable type.

SUBSTANCE: linking zone for linking two adjacent data sectors includes two linking frames of the same size. Each linking frame contains synchronization signal and digital data, which include a given data combination recorded after aforementioned synchronization signal. Aforementioned synchronization signal is different from other synchronization signals recorded in data recording zone and/or used for rewritable type high density carrier.

EFFECT: ensured compatibility during reproduction of non rewritable carrier with rewritable carrier.

4 cl, 37 dwg

Description

1. FIELD OF THE INVENTION

The present invention relates to a structure of a binding region formed between data sections on a read-only medium of a high density recording in order to ensure compatibility of the medium with a rewritable recording medium during playback.

2. BACKGROUND

A disc-type recording medium, such as a compact disc (CD), can permanently store high-quality digital audio data, which is why it is a very popular recording medium. Moreover, as a new disc-type recording medium, a digital multi-function disc (hereinafter referred to as DVD) has been developed. A DVD can store much larger volumes than a CD, so high quality video and audio material of much longer duration is recorded on the DVD. Therefore, DVD is used widely. There are three types of DVDs - read-only DVD-ROM, write-once DVD-R, and rewritable DVD-RAM or DVD-RW.

Recently, interested companies have been standardizing DVD re-writable high-density media, the so-called BD-RE (Blu-ray Disc Rewritable - Blu-ray disc rewritable), which has more capacity than DVD.

As shown in FIG. 1A, a BD-RE rewritable disc has separate areas including a commit area 1, a transition area 2, a partitioning area 3, a track zero 4, a data zone and an end zone 5.

The fixation region 1 is the central region that is fixed by the latch of the disk device for fixing the rotating disk, and the transition region 2 is the region between the fixation region 1 and the information zone including the track zero 4 and the data zone. The breakdown area into parts 3 is used to add information to the disk after completion of the disk manufacturing process. On track zero 4, important information necessary for playing a disc is recorded, while in the end zone 5, a disc end signal is recorded.

Zero track 4 is divided into several areas, including the first protection area, PIC, the second protection area, the second information area, the OPC (Optimum Power Calibration) area, the backup area and the first information area.

The first protection area is the area of protection against overwriting the PIC area by means of the partitioning area, the PIC area is the area where general information about the disk and other various information is stored in the pre-recording groove, the second protection area means the buffering area for switching from the preliminary area write to the rewritable area, and the first and second areas of information, respectively, are used to store certain information about the disk or about the application, for example er, such as control information.

1B and 1C show a single recording unit defined in the disc standard in question. A separate unit recording unit, which corresponds to a separate unit of the error correction code (ECC - Error Correction Code), consists of an input area, a physical cluster, an output area and a protection area, as shown in figv. If a plurality of single recording blocks, namely a sequence of such blocks, is simultaneously created for recording input data in real time, for example, audio / video (A / V) data, the set of the input region, physical cluster and output region is repeated as many times as necessary, and at the end, the protection region “Gurar_3” is formed, as shown in FIG. 1C.

The input region, as shown in FIG. 2A, consists of the protection region 'Guard_1' of 1100 channel bits and the initial part 'PrA' of 1660 channel bits. "To indicate the title of a single recording block, 55 repetitions of the combination are recorded in the protection region 'Guard_1' 20 channel bits, the first part of 'PrA' records the first sync signal 'Sync_1' and the second sync signal 'Sync_2' with a length of 30 channel bits.The data of each sync signal consists of a 24-bit body of the sync signal and a 6-bit identifier (ID) Sync Signal ID rosignalov data of the first and second clock signals - are respectively the '000 100' (FS4) and '010 000' (FS6) (FS - frame status - frame status).

The output region, as shown in FIG. 2B, consists of the protection region “Guard_2” of 540 channel bits and the end portion of “PoA” of 564 channel bits, including data of the third clock signal “Sync_3”. The third clock data also includes a 24-bit clock body and a 6-bit clock identifier. The identifier of the third clock is '000 001' (FS0).

The protection area 'Guard_2' is created to prevent overlapping between previously recorded data and the new data to be recorded, and contains 27 repetitions of a combination of 20 channel bits to indicate the end of a previously recorded area, namely, a newly recorded unit of recording.

User data is recorded in the physical cluster and restored to the original data by the signal processor, where a timer is used, synchronized with the clock data that is recorded in the input area.

FIG. 1D shows in detail the recording format of the physical cluster BD-RE, where 31 recording frames (frames # 0 ~ # 30) are recorded. The 7 frame sync signals that differ from each other (FS # 0- # 6) are recorded in 31 recording frames in a pre-determined order, as shown in FIG.

FIG. 1E shows the types and combinations of frame sync signals to be recorded in a physical cluster. As shown in FIG. 1E, a total of 7 frame sync signals are used and each frame sync signal consists of a 24-bit sync body and a 6-bit synchronized identified combination other than 7 frame sync.

Each unit of record corresponding to one block of the error correction code, as mentioned above, contains information about the physical address, for example, the address block number (AUN), which makes it possible to randomly access a randomly selected unit of record recorded on the BD-RE. Information about the physical address is recorded in the physical cluster of a single recording unit after it is modulated and encoded together with the audio / video data. The address block number, in turn, is a derivative of the physical sector number, which is not actually recorded on the BD-RE.

In the case of a write-once disc or a rewritable disc (DVD-R, -RW, -RAM, + R, + RW), a binding frame is created behind the previously recorded area before new data is recorded in the absence of continuity with previously recorded data. However, a read-only disc, such as a DVD-ROM and a video CD, does not need a binding frame to link the two sections of data, as it contains the finally recorded data.

This difference between a recordable disc and a read-only disc requires the addition of a conventional disc player, such as a DVD player and a DVD-ROM drive, with additional hardware and / or software for playing both types of discs.

Of course, a disc device capable of recording / reproducing a recordable disc also requires additional equipment and / or software for reproducing read-only discs along with recording discs.

Currently, along with BD-RE standardization, a read-only high-density recording medium standard, the so-called 'BD-ROM', is under discussion. Meanwhile, if the physical format of the BD-ROM was the same as that of the BD-RE, the disc player is able to apply the same playback algorithm to both media. In addition, it is necessary to ensure their distinguishability and at the same time guarantee the compatibility of their formats. Thus, it is necessary to coordinate these mutually opposite conditions. However, no suitable decisions have yet been created.

3. SUMMARY OF THE INVENTION

An object of the present invention is to provide a read-only recording medium having the same physical recording format containing a binding region in order to guarantee playback compatibility with a high-density recording medium for rewriting, and to provide a method and apparatus for reproducing the aforementioned recording medium intended only for reading.

Another objective of the present invention is to provide a read-only recording medium having synchronization data in a binding region whose bit combination is different from synchronization data recorded in a data recording region, and to provide a method and apparatus for reproducing the aforementioned read-only recording medium .

Another objective of the present invention is the recording of a physical address in the field of binding together with the frame clock.

Another objective of the present invention is to provide a read-only recording medium with a binding area where scrambled data is recorded, and a method and apparatus for reproducing the aforementioned read-only recording medium.

Another objective of the present invention is to provide a read-only recording medium, the binding area of which contains data scrambled in the same way as the main data, and to provide a method and apparatus for reproducing the aforementioned read-only recording medium.

Another objective of the present invention is to provide a read-only recording medium, the binding area of which contains data scrambled using values obtained from physical sectors associated with data frames located in a previous physical cluster, and a method and apparatus for reproducing the aforementioned read-only recording medium.

Another objective of the present invention is to provide a read-only recording medium containing dummy data in its binding areas, and to provide a method and apparatus for reproducing the aforementioned read-only recording medium.

Another objective of the present invention is the creation of a read-only recording medium, the binding area of which contains data recorded in a format for error correction, and a method and apparatus for reproducing the aforementioned read-only recording medium.

A read-only recording medium, as well as a method and apparatus for reproducing it in accordance with the present invention, is characterized in that a binding region is created in a region corresponding to an input and output region of a rewritable recording medium.

It is further characterized in that a recording frame of a predetermined size is recorded in the binding region.

It is further characterized in that useful information is recorded in a recording frame.

It is further characterized in that the binding region is formed at each transition between the recorded data sections, where each binding region contains at least one clock signal indicative of the binding region.

It is further characterized in that the clock recorded in the binding region is different from the clock recorded in the data section.

It is further characterized in that each of the binding regions contains data scrambled with a physical address recorded immediately before or after the binding region.

It is further characterized by the fact that the binding region contains data scrambled by the frame sync signal recorded in it.

It is further characterized in that the binding region contains data scrambled with an arbitrary predetermined value.

It is further characterized in that the dummy data is recorded in a recording frame located in the binding region.

It is further characterized in that information indicating the physical address is also recorded in the recording frame.

It is further characterized in that user data is recorded as a block of error correction code in the recording frames.

It is further characterized in that the data, after being processed in the same or similar manner as the user data in the data frame, is recorded in the recording frame located in the binding area.

It is further characterized in that a certain area within the data area where a single recording unit corresponding to the input and output areas of the rewritable recording medium is to be recorded is recorded using a recording frame of a predetermined size.

It is further characterized by the fact that in a certain area corresponding to the input and output areas of the rewritable recording medium, recording frames of a predetermined size are recorded, where a frame clock having a unique bit combination is recorded in at least one recording frame.

It is additionally characterized by the fact that in a certain area within the data area where a single recording unit is to be recorded corresponding to the input and output areas of the rewritable recording medium, recording frames of a predetermined size are recorded, where the frame clock having a unique bit combination is repeated twice or more number of times.

It is additionally characterized by the fact that in a certain area within the data area where a single recording unit is to be recorded corresponding to the input and output areas of a rewritable recording medium, recording frames of a predetermined size are recorded, where a frame sync signal having a unique bit combination is recorded at least at least in one recording frame.

The method for reproducing data of a binding area of a read-only recording medium in accordance with the present invention is characterized in that it includes the following steps: reading a frame sync signal contained in a recording frame of a read-only recording medium, and checking a combination of identifying the synchronization signal in the read frame clock; and determining the current region as the binding region if the checked combination is different from that contained in the frame clocks recorded in the physical cluster.

The method for recording useful data on a read-only recording medium in accordance with the present invention is characterized in that recording frames of a predetermined size are recorded in a specific area corresponding to the input and output areas of a rewritable recording medium, and then address information about physical cluster located before or after recording frames.

The recording method is further characterized in that the recording frames of a predetermined size are recorded in a specific area corresponding to the input and output areas of the rewritable recording medium, and then useful information is recorded in the user data areas of the recording frames.

The recording method is further characterized in that the recording frame containing the clock signal, the physical address and user data is recorded in the binding area corresponding to the input and output region of the rewritable recording medium, where the user data is scrambled either by the clock signal and the address contained therein, or by a predetermined value, or the address block number recorded in the physical cluster closest to the record frame.

The recording method is further characterized in that the recording frames, each of which contains a clock signal, a physical address and user data, are recorded in a binding area corresponding to an input and an output region of a rewritable recording medium, and then various predetermined dummy information is recorded in a user data area of each frame records.

4. BRIEF DESCRIPTION OF THE DRAWINGS

The above features and other advantages of the present invention will be more apparent from the following detailed description in accordance with the attached drawings, where:

on figa shows the structure of a rewritable disc BD-RE (rewritable disc Blu-ray);

1B and 1C show respective formats of a single recording unit BD-RE;

on fig.1D shows the structure of the physical cluster BD-RE;

FIG. 1E shows the frame clocks used for the BD-RE;

on figa and 2B respectively shows the input and output areas contained in the unit recording unit BD-RE;

on figa and 3B shows the corresponding formats of the input and output areas formed in the unit recording unit BD-ROM in accordance with the first embodiment of the present invention;

on figa shows the format of the binding region, structured on a BD-ROM in accordance with a second embodiment of the present invention;

on figv shows the format of the binding region, structured on a BD-ROM in accordance with a third embodiment of the present invention;

on figs shows the format of the binding region, structured on a BD-ROM in accordance with the fourth embodiment of the present invention;

FIG. 4D shows a binding region format structured on a BD-ROM in accordance with a fifth embodiment of the present invention;

figure 5 shows the new frame clocks defined in accordance with the present invention;

on figa shows the structure of the binding region for binding physical clusters, which is formed on the BD-ROM, and the corresponding frame clock in accordance with an embodiment of the present invention;

on figb shows the frame clock, which should be used for linking frames in accordance with the present invention;

on figa-7C shows the corresponding structure of each frame of the binding in the field of binding and illustrated recorded in her frame clock in accordance with the present invention;

on fig.7D presents the conversion table 17PP-modulation;

on Fig presents a sequence diagram of the playback of each frame binding in accordance with the present invention;

figure 9 presents a simplified block diagram of a player for reproducing a recording medium;

on figa-10C schematically shows the corresponding methods of recording a physical address in the field of binding in accordance with the present invention;

on figa presents a block diagram of the structural diagram of the binding frame, designed to create a binding frame using user input, structured as in figa;

on figv presents a block diagram of the structural diagram of the binding frame, designed to create a binding frame using user input, structured as in fig.4D;

on figa shows the structure of the physical address located in the binding frame, structured as in figv;

on figv shows a detailed block diagram of a scrambler for scrambling user data into a binding frame, structured as in figa;

on Fig presents a detailed block diagram of a scrambler for scrambling user data into a binding frame, structured as in figs;

on figa-14C shows the area of the user data of the binding frames, where the recorded user data consisting of arbitrary values;

on figa shows an example implementation of the present invention, where user data is recorded in a format with the possibility of error correction in the recording area of the user data of the binding frame, structured as in fig.4D;

on figv shows the case of recording useful data in the ECC format in accordance with the example shown in figa;

on figs shows the case of recording small payload data in a format in accordance with the example shown in figa; and

on Fig shows another example implementation of the present invention, where user data is recorded in ECC format with the ability to correct errors in the user data area of the binding frame in accordance with the present invention.

5. MODES FOR CARRYING OUT THE INVENTION

For a better understanding of the present invention, examples of its implementation will be described below with reference to the accompanying drawings.

Firstly, a binding region of a high-density recording medium structured in accordance with the present invention and methods for recording data related to the binding region, namely, methods for generating data, are disclosed in detail.

Further, the terms “enter information” (write), “write” (record) and “form” (form) are used to refer to the same concepts for a read-only recording medium. And the frame formed in the binding area is called the binding frame or recording frame.

(1) the structure of the binding region

A read-only medium with a high recording density, such as a BD-ROM structured in accordance with the present invention, has a physical format (consisting of an input region, a physical cluster, an output region and a protection region), which has been described with reference to figures 1 and 2 for rewritable media with high recording density. However, the corresponding BD-ROM fields that correspond to the format elements of the rewritable recording medium may be called differently.

The input region formed in the first embodiment of the present invention, as shown in FIG. 3A, consists of a guard region 'Guard_1' and an initial portion 'PrA', which contain data of two clock signals. The data of each clock signal consists of a 24-bit body of the clock signal and a 6-bit identifier of the clock signal.

While the sync identifiers of the clock data in the initial part of the BD-RE are respectively '000 100' and '010 000', as shown in FIG. 2A, the initial part of the BD-ROM structured in accordance with the present invention contains the data of the two clock signals whose identifiers are FS0 ('000 001') (Sync_3) and FS6 ('010 000') (Sync_2). The sync data 'Sync_3' is placed before the sync data 'Sync_2'.

In addition, the end portion of the 'PoA' in the output region of the BD-ROM, structured in accordance with the present invention, as shown in FIG. 3B, contains clock data whose identifier corresponds to FS4 ('000 100') (Sync_1). This is different from the BD-RE, where the clock data with the clock identifier corresponding to FS0 ('000 001') is recorded at the end of the BD-RE.

In the case of BD-RE, when creating two single recording blocks, a pair is formed from the input and output regions, as shown in FIG. 1C. Such a pair from the input and output regions (which corresponds to the binding region) contains the data of three clock signals recorded in the following order: 'Sync_1', 'Sync_2' and 'Sync_3'. Meanwhile, the write order for the BD-ROM is as follows: 'Sync_3', 'Sync_2' and 'Sync_1', which is the reverse order with respect to the BD-RE.

Therefore, although the BD-ROM, structured in accordance with the present invention, in its physical recording format is the same as the BD-RE, it can be distinguished from the BD-RE in the order in which the sync data is recorded in the binding region. In addition, it is easy to determine whether or not the current region is the BD-ROM binding region in the order of the timing data.

In the above embodiment, the input region, the output region, and the guard region 'Guard_3' may contain information similar to that recorded in the respective regions of the BD-RE.

The structure of the BD-ROM binding region may be otherwise determined as shown in FIG. 4A, which illustrates a second embodiment of the present invention. As shown in FIG. 4A, in the case of the BD-ROM, two binding frames of the same size (1932 channel bits) constitute a single binding region, whereas in the case of BD-RE a single binding region is constituted by a 1104-bit input region and a 2760-bit differing in size exit area.

Two linking frames have the same structure and each frame is formed from a frame sync signal of 30 channel bits, a 9-byte physical address, 114-byte user data and 32-byte parity.

114-byte user data may include various additional information, for example, copy protection information, which makes it impossible to illegally copy content, for example, a movie recorded on the BD-ROM to another medium, or control information for controlling the drive.

4B shows a third embodiment of the present invention. The linking area in the third embodiment consists of two linking frames of the same size (1932 channel bits) and each linking frame consists of a frame sync signal of 30 channel bits, a 9-byte physical address, 146-byte user data. Compared to FIG. 4A, the embodiment shown in FIG. 4B is characterized in that it does not have parity.

Useful information can be recorded in 146-byte user data. Useful information is copy protection information that makes it impossible to illegally copy content, for example, a movie recorded on a BD-ROM to another medium, or control information for controlling a drive.

4C illustrates a fourth embodiment of the present invention. The linking area of the fourth embodiment of the invention consists of two linking frames of the same size (1932 channel bits) and each linking frame consists of a frame sync signal of 30 channel bits and 155 byte user data. Compared to FIG. 4A, the example shown in FIG. 4C is characterized in that it has no physical address and no parity. This embodiment also differs from the embodiment shown in FIG. 4B in that it does not have a physical address.

FIG. 4D shows a fifth embodiment of the present invention. The coupling region of the fifth embodiment consists of an advance frame sync signal of 30 channel bits, a coupling part of 714 channel bits, two rear sync signals of 30 channel bits and two repeatable combinations of 40 and 20 channel bits respectively.

The linking part in 3714 channel bits consists of three linking frames and 4-bit dummy data.

The binding region may have any possible structure different from the above.

The data is recorded in the form of an ECC block in a physical cluster and, in general, in the ECC block, the above-mentioned seven frame clocks FS0-FS6 are used.

At least one of the two linking frames shown in FIG. 4A uses a new frame sync signal 'FS n', which differs from seven frame sync signals in its sync identifier. The sync ID of this new frame sync signal 'FS n' is' 100 101 (FS7), '101 010' (FS8), '010 101' (FS9) or '101 001' (FS10), as shown in FIG.

All four clocks present satisfy the limitation that the transition offset defined for the BD-RE in the bit combination is at least 2 bits.

In the recording example shown in FIG. 4A, the frame clock FS0 is recorded in the first linking frame, and the frame clock 'FS n' in the second.

Meanwhile, data recording on the BD-ROM must satisfy the restriction of 17РР-modulation of the code (РР - Parity Preserve - parity preservation) 'Ban RMTR (Run-Limited Transition - restrictions on the number of transitions)', which is the data recording standard defined for BD- RE.

The restriction 'RMTR Prohibition', which serves to ensure stable recognition of the Radio Frequency (RF) signal, is that the minimum duration of a 2T pulse train, namely '01' or '10', should not be continuously repeated more than six times. Thus, it is preferable to use a frame clock with a low transition frequency, namely, '100 101 (FS7) or' 101 001 '(FS10) among the new frame clocks, so that a series of bits satisfies the limitation. The use of frame clocks is explained in detail with reference to FIG. 6.

The first case depicted in FIG. 6B corresponds to a first embodiment of the present invention. In this exemplary embodiment, two recording frames in 1932 channel bits are recorded in the binding field, and each recording frame consists of a frame clock, a physical address, user data, and parity. At least one of the two recording frames contains the newly defined frame sync signal 'FS n'.

For example, the frame sync signal 'FS0' with the identification combination (ID) '000 001' is recorded as the first frame sync signal, while the new frame clock 'FS n' with the identification combination '010 101,' 101 010 'or' 100 101 'is recorded second.

In case a new frame synchronization signal 'FS n' is used with the identification combination '010 101', '101 010' or '100 101', the 9-byte physical address following the frame synchronization signal 'FS n' contains unscrambled initial data ' 00 ', as shown in figa. That is why it is desirable to fulfill the limit on the number of transitions (RMTR) of the 17PP modulation code defined for writing data to the BD-RE.

For example, if a new frame clock FS7 is used with the sync identification combination '100 101 and at the same time subsequent user data bits are “01 11 01 11”, the modulated bits of which are according to the PPP modulation table 17 shown in FIG. 7D, the following : “010 101 010 101”, the final modulated bits including the synchronization identification combination are “100 101 010 101 010 101”, where the 2T combination, a one-zero combination between two neighboring units, continuously appears seven times.

However, if the user data header contains '00', the above example user data will become “00 01 11 01 11”, where the series of 17PP-modulated bits are as follows: “010 100 101 010 101”. Thus, the final bits with the sync identification combination are “100 101 010 100 101 010 101”, where three 2T combinations, a 3T combination and four 2T combinations appear in sequence.

The second case depicted in FIG. 6b is a second embodiment of the present invention. In this exemplary embodiment, two recording frames in 1932 channel bits are recorded in the bonding field, and each recording frame consists of a frame clock, physical address, user data, and parity. At least one of the two recording frames contains the frame sync signal FS10 ('101 001'), one of the newly defined frame sync signals 'FS n'.

For example, the frame clock FS0 with the identified combination '000 001' is recorded as the first frame clock, while the new frame clock FS10 with the identification combination of the clock '101 001' is the second.

In case a new frame sync signal TS10 ′ is used, the restriction of the RMTR 17PP modulation codes defined for writing data to the BD-RE is automatically performed. Thus, the subsequent physical address does not have to begin with '00'.

For example, if a new frame clock signal TS10 'is used with the identified combination' 101 001 'and at the same time the following user data bits are “01 11 01 11”, the modulated bits of which are in accordance with the PPP modulation table 17d shown in FIG. 7d, the following: “010 101 010 101”, the final set of modulated bits with the sync identification combination is “101 001 010 101 010 101”, where one 2T, one 3T, and six 2T combinations appear.

The third case illustrated in FIG. 6b is a third embodiment of the present invention. In this embodiment of the present invention, two recording frames in 1932 channel bits are recorded in the binding field and each recording frame consists of a frame clock, a physical address, user data and parity. Both recording frames contain the newly defined frame clock 'FS n'.

For example, the first and second frame clocks use one of the new frame clocks FS7 ('010 101'), FS8 ('101 010') and FS9 ('100101').

In case a new frame clock FS7, FS8 or FS9 is used, followed by a frame clock FS7, FS8 or FS9, the 9-byte physical address contains the unscrambled initial data '00', as shown in FIG. 6A. This, as explained previously, serves to better satisfy the RMTR 17PP modulation code restriction defined for writing data to the BD-RE.

In case a new frame clock FS7 is used ('100 101), the RMTR limitation can be satisfied by recording the user data area behind the frame clock having data other than “01 11 01 11”.

The fourth case depicted in FIG. 6B is a fourth embodiment of the present invention. In this exemplary embodiment, two recording frames in 1932 channel bits are recorded in the binding field, and each of the recording frames consists of a frame clock, a physical address, user data, and parity. Both recording frames contain the new FS10 frame clock ('101 001').

If the new frame sync signal 'FS10' is used for both data frames, the restriction RMTR 17PP modulation of the codes defined for recording data on the BD-RE is automatically fulfilled. Thus, the physical address following each frame clock does not have to start with '00'.

If the newly defined frame sync signal 'FS n' is used, as explained above, whether or not the current region is within the linking region is determined very simply and accurately, since the new frame sync signal is different from those used in the physical cluster.

For example, if the combination of frame sync signals is used to determine the current area, since the combination of frame sync signals consisting of 'FS n' recorded in the binding area and FS4, FS4 and FS2 recorded respectively in recording frames 29 through 31 -th (recording frames # 28- # 30) within the previous physical cluster becomes FSn-FS4 or FSn-FS2, which, obviously, differs from the combination formed from the frame sync signals recorded in the physical cluster, is the current region within binding regions, precisely o is determined according to the combination of frame sync signals.

Several cases explained above are summarized as follows.

If a restriction is imposed on the data to be recorded immediately after the frame clock, any of the four frame clocks can be used.

For example, in the case of recording the physical address behind the frame clock, if the physical address always has a header of bits '00', frame clocks FS8 and FS9 can be used without any difficulties.

Even if the physical address is not recorded, if a specific byte, for example '08h' (0000 1000), is written without scrambling directly behind the frame clock, a series of bits "000 100 100 100" modulated from '08h' by 17PP modulation , is placed after the frame clock so that, regardless of the RMTR limit, any of the four new frame clocks FS7-FS10 can be used.

The frame clocks are used so that one of the four new frame clocks FS7-FS10 is recorded in one of the two linking frames, while one of the already known frame clocks FS0-FS6 is in the other linking frame. Needless to say, only new frame sync signals can be used in both binding frames, as shown in cases 3 and 4 of FIG. 6.

If at least one selected from the new frame signals 'FS n' is used in the linking frame, a disc player that includes an optical head 11, a video playback system 12 and a digital-to-analog converter 13, as shown in FIG. 9 , is able to very quickly find out when playing data from the BD-ROM whether the current read frame is within the binding area or data section (physical cluster).

In the case of BD-RE 31, the recording frame separately contains one of seven different frame sync signals. However, seven frame sync signals are not enough to identify and distinguish 31 recording frames so that the frame sync signal in the previous record frame or recording frames is used to identify the current recording frame along with the frame sync located in the current frame.

In other words, the recording frame N can be identified by successive clock signals: its own frame clock and the frame clock of previous recording frames N-1, N-2 and / or N-3. That is, although one or two previous clock signals N-1 and / or N-2 are not detected, the last detected clock signal N-3 can be used to identify the recording frame N together with its clock signal.

For example, suppose that the current recording frame is the seventh, namely, recording frame # 6, then the frame clock is FS1, as shown in FIG.

However, the frame clock FS1 is also recorded in frames # 1, # 23 and # 24, so that the previous detected frame clock can be used to identify the current frame. The currently detected frame sync signal FS1 and the previous detected frame sync signal or clock signals FS4, FS1 and / or FS3, which are respectively in frames # 5, # 4 and # 3, make it possible to determine that the current frame is the seventh.

Since the location of the frame clocks is used to identify the data frame, as explained above, the sequence of frame clocks from the previous data frame to the recording frame within the binding area where the newly defined frame clock is used should be taken into account. This is explained in detail with reference to figa-7C.

7A-7C depict respective frame sync sequences according to the present invention.

On figa presents the first case shown in figa and 6B, a figv and 7C, respectively, relate to a pair of clock signals FS7-FS7 and FS7-FS8 of the third case, shown in figv.

In the case where the frame clocks FS0 and FS7 are used, as shown in FIG. 7A, the frame clocks of frames N, N-1 and N-3 before frame # 0 with the frame clock FS0 are sequentially FS7, FS0 and FS2, as the case shows (one). This frame # 0 corresponds to the first address block of a single recording block. As case (2) shows, the three frames in front of frame # 0 in the second line have sequentially frame sync signals FS2, FS4, and FS4. This frame # 0 corresponds to the middle address block of a single recording block. As case (3) shows, the three frames in front of frame # 1 have a sequence of frame clocks FS0, FS7 / FS2, and FS4, so this frame # 1 corresponds to the first address block or middle block of a single recording block. In addition, the three frames in front of frame # 2 are sequentially frame sync signals FS1, FS0 and FS7 / FS2 in their frame sync signals, as case (4) shows, so this frame # 2 corresponds to the first or middle block of a single recording unit.

As shown in the case indicated by 'A' in FIG. 7A, both frame # 0 corresponding to the middle address block of a single recording unit and frame # 31 (first linking frame) newly proposed in accordance with the present invention have the same frame sequence clock of previous frames. Thus, it is difficult to identify the beginning of the binding region and the use of a pair of FS0 and FS7 would not be an adequate solution.

The following case, when only FS7 is used, is shown in FIG. As shown in case (1) shown in FIG. 7B, the frame sync sequence before frame # 0 is FS7 / FS2, FS7 / FS4 and FS2 / FS4, and frame # 0 is the first address block or middle block of a single recording block . As case (2) shows, the sequence of frame sync signals before frame # 1 is FS0, FS7 / FS2 and FS7 / FS4, and frame # 1 is the first or middle block of a single recording block. In addition, as case (3) shows, the frame sync sequence before frame # 2 is FS1, FS0, and FS2, and frame # 2 is also the first or middle block of a single recording unit.

However, as shown in the case indicated by 'B' in FIG. 7B, the first linking frame (frame # 31) and the second (frame # 32) newly proposed in accordance with the present invention have the same sequence of frame sync signals for frames N and N -3, which may cause difficulty in detecting the binding region.

However, since when using two FS7s, the two binding frames have the newly defined FS7 frame sync, this case of FS7-FS7 would have caused less difficulty in detecting the binding region than in the case of FS0-FS7 shown in Fig. 7a.

7C shows a case where FS7 and FS8 are used. As shown in case (1), the sequence of frame clocks before frame # 0 is FS8 / FS2, FS7 / FS4 and FS2 / FS4, and frame # 0 is the first or middle address block of a single recording block. As case (2) shows, the sequence of frame sync signals before frame # 1 is FS0, FS8 / FS2 and FS7 / FS4, and frame # 1 is the first or middle block of a single recording unit.

In addition, as case (3) shows, the frame sync sequence before frame # 2 is FS1, FS0, and FS7 / FS2, and frame # 2 is also the first or middle block of a single recording unit.

As shown in FIG. 7C, when using FS7 and FS8, a similar previous sequence of frame sync signals before any frame is not detected, namely, the previous sequence of frame sync signals before any frame is unique, therefore, there is no difficulty in detecting the binding region, unlike in two cases, depicted in figa and 7B.

Therefore, the use of FS7 and FS8 is best for the binding region structured in accordance with the present invention. In addition, the frame clocks FS7 and FS8, as explained above, satisfy the RMTR limitation.

Fig. 8 is a flowchart of an embodiment of a method for reproducing a recording from a medium structured in accordance with the present invention.

If the BD-ROM containing the binding region structured in accordance with the present invention is loaded (S81), first, the playback control information recorded on the BD-ROM is loaded into the memory (S82). Since control information is usually recorded in the input zone, it is read out at the initial stage of preparation by the optical head. After that, the reproduction of the main data under the control of the control unit (S83) begins. During playback, the presence of a frame sync signal is checked (S84). If it is detected, it is determined whether the detected clock signal is one of the clock signals recorded in the main data area (S85). You can determine this if the recorder on the playback disc having the clock signals FS0-FS8 compares the detected clock signal with those stored in the device.

If it is determined that the detected clock signal is one of the clock signals (FS0-FS6) recorded in the main data area (S86), playback continues. However, if it is determined that the detected synchronization signal is not one of the synchronization signals (FS0-FS6), and therefore it is the newly defined synchronization signal FS7 or FS8, then the current position is considered to be the binding region (S87) and then it is checked again within the first or second frame binding (S88). If within the first linking frame, then the data that follows its frame sync signal is descrambled (S89). Otherwise, the current position is considered the second linking frame, and the data that immediately follows its frame sync signal is descrambled (S90).

Thus, the disc player, which includes an optical head 11, a video playback system 12, and a digital-to-analog converter 13, as shown in FIG. 9, is able to more accurately detect the physical address and user data within the first and second linking frames (recording frames # k + 1, # k + 2) BD-ROM, when such a disk is placed in the device. In particular, if the user data contains useful information intended to protect against illegal copying or drive control, the device performs an operation corresponding to the useful information.

As explained above, it is possible to determine simply and quickly by detecting and comparing a newly defined frame sync signal whether the current position of the optical head is within the binding region or the main data region.

(2) Physical Address

In the structure of the binding frame shown in FIG. 4A, there are three cases of recording a physical address in each frame of the recording of the binding area, as shown in FIG. 10A. In the first case, the address block number of the physical cluster # k + 1 located closest to the frames is recorded in both binding frames, and in the second case, the address block number of the physical cluster #k located closest to the frames is recorded.

In the third case, the number of the address block of the physical cluster #k located closest to the first frame of binding is recorded in the first binding frame, while in the second case the number of the address block of the physical cluster # k + 1 is located closest to the second frame of binding.

A physical address consisting of a 4-byte address, 1 reserved byte, and 4-byte parity, as shown in FIG. 11A, is error-corrected encoded using RS (9, 5, 5) used in the BD-RE. Later, processing that makes it possible to correct errors in the address is described in detail.

Thus, the disc player, which includes an optical head 11, a video playback system 12, and a digital-to-analog converter 13, as shown in FIG. 9, is able to more accurately detect the physical address and user data within the first and second linking frames (recording frames # k + 1, # k + 2) BD-ROM, when such a disk is placed in the device. In particular, if the user data contains useful information intended to protect against illegal copying or drive control, the device performs an operation corresponding to the useful information.

In the structure of the binding frame shown in FIG. 4A, there are three cases of recording the physical address in each frame of the recording of the binding area, as shown in FIG. 10B. In the first case, the address block number of the physical cluster # k + l located closest to the frames is recorded in three binding frames, and in the second case, the address block number of the physical cluster #k located closest to the frames is recorded.

A physical address consisting of a 4-byte address, 1 reserved byte, and 4-byte parity, as shown in FIG. 11A, is error-corrected encoded using RS (9, 5, 5) used in the BD-RE. Later, processing that makes it possible to correct errors in the physical address is described in detail.

Thus, the disc player, which includes an optical head 11, a video playback system 12 and a digital-to-analog converter 13, as shown in FIG. 9, is able to more accurately detect the physical address and user data within three consecutive linking frames (recording frames #k +1, # k + 2, # k + 3) BD-ROM, when such a disk is placed in the device. In particular, if the user data contains useful information intended to protect against illegal copying or drive control, the device performs all operations corresponding to the useful information.

10C shows another exemplary embodiment of the present invention, where an address is recorded in a recording frame. Each of the binding frames (record frames # k + 1, # k + 2) contains a 9-byte physical address containing a 4-byte valid address. A 4-byte valid address can have the same value as the 16 numbers of the address block # 0- # 15 recorded in the physical cluster before or after the binding frames.

The 4-byte valid address recorded in the physical cluster before the first binding frame consists of a 27-bit address, a 4-bit sequence number (0000 ~ 1111) indicating its order in physical addresses, and a 1-bit fixed value of '0', as shown in FIG. 10C. All 27-bit addresses recorded in a previously standing physical cluster have the same value.

Another 4-byte valid address recorded in the physical cluster behind the second binding frame consists of a 27-bit address, a 4-bit sequence number (0000-1111) indicating its order in physical addresses, and a 1-bit fixed value of '0' as shown in FIG. 10C. All 27-bit addresses recorded in the next physical cluster have the same value.

As mentioned above, the 4-byte valid address of the first binding frame contains the address recorded in the physical address located earlier. For example, the 4-byte valid address of the first linking frame has an address value of the nearest 16th address block number (address block number # 15) of 27 bits and '11110', as shown in FIG. 10C. In this case, the last 1-bit '0' of the five bits '11110', which should be recorded in the first linking frame, can be replaced by '1' to indicate that this is a physical address recorded in the linking region, and not in the physical cluster .

In addition, the 4-byte valid address of the second binding frame contains the address recorded in the physical address located later. For example, the 4-byte valid address of the second binding frame has an address value of the nearest first (address block number # 0) of 27 bits and '00000', as shown in FIG. 10C. In this case, the last 1-bit '0' of the five bits '00000', which should be written in the second binding frame, can be replaced with '1' to indicate that this is the physical address recorded in the binding area, and not in the physical cluster.

The last five bits of the 4-byte valid address to be written in the first binding frame can be '00000', while the last five bits of the 4-byte valid address that should be written in the second binding frame can be '11110'.

In addition, the address recorded in an arbitrary physical cluster among the physical clusters located before or after the binding region can be recorded in the first and second binding frame, as explained above with reference to FIG. 10C.

(3) Scrambling

Fig. 11A is a block diagram of a structure for forming a binding frame with the structure shown in Fig. 4A. This design for forming a binding frame includes a scrambler 10 and an adder 20. The scrambler 10 scrambles 114-byte user data with a 9-byte physical address, generates a DSV (digital sum value) close to zero, and adds a 9-byte physical address before scrambled user data.

The adder 20 adds 32 bytes of parity for the user data supplemented by the address and received from the scrambler 10, as well as the frame clock signal with a length of 20 channel bits before the user data supplemented by the address. Thus, a complete recording frame is created, which includes 114-byte user data scrambled with a 9-byte physical address.

When scrambling user data, not only a 9-byte physical address can be used, but also other information.

Fig. 11B is a block diagram of a structure for forming a binding frame with the structure shown in Fig. 4D. This design for forming a binding frame includes a scrambler 10 'and an adder 20'. A scrambler 10 'scrambles 62-byte user data, for example, information intended to protect against illegal copying, with a 9-byte physical address, forms a DSV (digital sum value) close to zero, and adds a 9-byte physical address before the scrambled user data .

The adder 20 'adds 32 bytes of parity for user data, supplemented by the address and received from the scrambler 10'. In this way, a complete 103-byte write frame is created, which includes 62-byte user data scrambled with a 9-byte physical address.

When scrambling user data, not only a 9-byte physical address can be used, but also other information.

Instead of generating a linking frame including a frame clock, a 9-byte physical address, 114 byte user data and 32 parity bytes, as shown in FIG. 4A, a linking frame can be formed so that it includes a frame clock, 9 a byte physical address containing 1 spare byte and 4 parity bytes, as well as 146 byte user data, as shown in FIG. 4B or 12A. 146-byte user data can be scrambled, and a 4-byte valid physical address can be used as a scrambling key.

That is, the 32-bit part (Add 0 ~ Add 31) of the 4-byte valid physical address is used as the initial load value for the 16-bit shift register 101 in the scrambling scheme, as shown in FIG. 12B. After the initial load value is loaded in parallel into shift register 101, one scrambled byte is output for each bit shift.

Since the user data in the exemplary embodiment of the present invention shown in FIG. 9 is 146 bytes long, a portion of the physical address is loaded in parallel to the shift register 101 every 146 bytes. The part of the address that should be loaded changes as the binding area changes. After parallel loading, 146 scrambled bytes (S0 ~ S145) are created and an exclusive OR operation is performed on them sequentially with a sequence of 146 bytes (D0 ~ D145) of user data by an exclusive OR logic element 102. A sequence of 146 bytes scrambled in the manner described above is written into the binding frame .

Instead of a physical address, part of the frame sync signal combination or the '10' bits repeated a number of times can be used as a key for scrambling user data. Moreover, instead of recording the physical address in the binding frame, one of 16 addresses contained in the physical cluster before or after the current binding frame can be used. In particular, one of the 16 addresses closest to the current binding frame is used.

The physical address to be recorded in the binding frame can be scrambled together with the user data recorded therein.

In another embodiment of the present invention, the physical address cannot be recorded in the binding frame, as shown in FIG. 4C. In this case, the physical address before or after the current linking frame, namely, the initial load value for the shift register, is used as the scrambling key. Since the user data in this embodiment of the present invention is 155 bytes long, every 155 offsets are loaded into the shift register as the initial value, the same or a different physical address.

As shown in FIG. 13, a portion of the 4-byte address (Add 0 ~ Add 31) is loaded in parallel into the 16-bit scrambler shift register 101 ′, which can also be used to write BD-REs, and then 155 8-bit scramblers bytes (S0 ~ S154) are sequentially output during bit shifts.

Over sequential 155 8-bit scrambled bytes (S0 ~ S154), an exclusive OR operation is performed with a sequence of 155 user bytes (D0 ~ D154) with an exclusive OR logic element 102 '. The result is 155 scrambled user bytes (D'0 ~ D'145) and they are written to the record frame of the binding area.

Instead of a physical address, part of the frame sync signal combination or the '10' bits repeated a number of times can be used as a key for scrambling user data.

(4) Dummy data

In case useful information intended to protect against illegal copying or drive control is not recorded in the area for user data, although two recording frames are formed in the BD-ROM binding area to ensure compatibility with BD-RE during playback, the area for user data may be populated with a specific arbitrary value, for example, '00h', as shown in FIG. 14A. The sequence of such fill values is called dummy data.

If the areas for user data are completely occupied by the same data, the manufacturing process of the BD-ROM can be further simplified. Meanwhile, if adjacent tracks have the same bit sequence, interference will be observed. Thus, as another embodiment of the present invention of fictitious data, in order to reduce the likelihood of interference in the area for user data, as shown in FIG. 14B, several values are alternately recorded, for example, '00h', '01h', '10h', '11h' , 'FFh', 'AAh', etc.

In this embodiment of the present invention, recording dummy data in recording frames of each binding frame located on the BD-ROM, dummy data consisting of different values is recorded, which reduces the likelihood of the formation of the same recording sequences on adjacent tracks. Consequently, the likelihood of interference is greatly reduced.

In the event that two recording frames are formed in the BD-ROM binding area to ensure compatibility with BD-RE during playback, as yet another embodiment of the present invention, the user data area may be filled with several arbitrary values, for example, '00', ' 01 ',' 10 ',' 11 ', which appear alternately, as shown in figs.

In the exemplary fictitious data recording embodiment shown in FIG. 14C, the same data is found in the areas for user data of the binding area, while neighboring binding areas have different dummy data.

In this embodiment of the present invention, the likelihood of creating the same recording sequences on adjacent tracks is very low, therefore, the probability of mutual interference is significantly reduced compared to the embodiment shown in FIG. 14A. The manufacturing process of the BD-ROM of this embodiment of the present invention is simpler than for figa.

In addition, if the areas for user data are filled with a single value, for example, '00h', after scrambling using a physical address that changes with each binding area, the interference can also be significantly reduced.

In the event that the areas for user data after scrambling are filled with the value '00h', if the non-scrambled value '08h' is placed in front of each area for user data, any of the above new frame sync signals can be used regardless of the RMTR limit defined in 17PP modulation, as explained above.

(5) Block structure of the error correction code (ECC)

If useful and important information is recorded in the area for user data, it is channel encoded to ensure its reliability. As a channel coding method, the RS (62, 30, 33) and RS (248, 216, 33) coding systems are used. These encoding systems have also been identified for use in encoding user data recorded in physical BD-ROM clusters.

FIG. 15A shows an example of a recording where data is recorded in a binding region whose structure is shown in FIG. 4D. To record payload data, as shown in FIG. 15A, 30-byte payload data is first encoded by the RS system (62, 30, 33), which creates 32 byte parity.

For this operation, the input data is sequentially written to the memory, and a 30 × 309 data block is formed. When a 30 × 309 data block is generated, each column is sequentially scanned (151). Each column scan, the RS coding system (62, 30, 33) generates 32-byte parity and adds it to the received data. The result is a 62-byte data sequence.

Every 62 bytes, including parity, can be scrambled. In the case of scrambling, a portion of the physical address can be used as the scrambling key, as explained above.

Then, before the 62 bytes generated during the previous process, a 9-byte physical address is added. A 9-byte physical address can be formed from a valid physical address and its parity. For example, a 9-byte physical address may consist of a 4-byte valid physical address, 1 reserve byte, and 4-byte parity.

Now, 71 bytes of dummy data is added to 71 bytes including the physical address, and then encoded by the RS system (248, 216, 33), as a result of which 32-byte parity is added. In the end, the added 145-byte dummy data is deleted and the resulting 103-byte data block must be written to the binding area.

The above operations are cyclically repeated on the next 30-byte payload, creating a sequence of 103-byte data blocks. After the formation of three blocks, three empty bits are added after three blocks, and then all 2467 bits are subjected to 17PP modulation. After 17PP modulation, 2467 bits are expanded to 3714 channel bits. The first frame sync signal of 30 channel bits is placed before the modulated 3714 bits, and the second frame sync signal of 30 channel bits, a repeat bit pattern of 40 channel bits, the third frame clock of 30 channel bits and another repeat bit pattern of 20 channel bits are added sequentially to modulated bits. The 3864 channel bits thus formed are recorded in the binding region.

In case there is not enough useful data to fill one binding area as described above, dummy data is added to the useful data segment so that together they are 30 bytes. For example, in the case when 3-byte payloads are to be written into the binding area, one byte out of three must necessarily constitute a separate data block. Thus, as shown in FIG. 15C, in the 30 × 309 data block, only one 309-byte string is populated, and the other 29 rows are populated with dummy data. This means that in each column, 29-byte dummy data is added to 1-byte payload data. Then, an RS coding system (62, 30, 33) is applied to each column of fictitiously added 30 bytes, adding 32-byte parity to the received data.

In order to restore the useful data recorded in the binding region in the manner described above, a decoding process is performed, namely, the sequence of operations inverse to the above recording process.

In the case where two identical frames form a single binding area, as shown in FIG. 4B, the area for user data of the binding frame may be filled with 114-byte payload and 32-byte parity, as shown in FIG. 4A. In the recording example shown in FIG. 4A, a different method is used for channel coding to ensure data reliability than that shown in FIG. 4B or 4C. This different method is described with reference to FIG.

First, user data is collected up to a size of 2048 bytes (S1). A 4-byte error detection code (EDC) (S2) is added to a data block composed of collected 2048 bytes. 2052 bytes, including an error detection code, are divided into eighteen 114-byte data blocks (S3). The first data block is scrambled (S4) and a 9-byte physical address (S5) is added in front of it. 93-byte dummy data is added to the 123-byte data block, which includes the physical address, all this is encoded by the RS system (248, 216, 33), as a result of which 32-byte parity is added to the data block. The added 93 bytes are deleted and the received 155-byte frame data (S6) 17PP are modulated. Finally, the aforementioned 30-channel frame sync signal is added before the frame data, forming a complete linking frame of 1932 channel bits (S7).

The above-described sequential processes (S4-S7) are applied to the next divided 114-byte data block, forming another binding frame. Two binding frames thus formed are recorded in the binding region, resulting in the formation of the structure depicted in Fig. 4a.

When each 114-byte block is scrambled during the above processes, the physical address is used in scrambling as described above. For the first and second binding frame in the binding area, the same or different physical addresses are used, which are recorded in a single recording unit located before or after the binding area. In the case of using different addresses, the first binding frame uses the address written before the binding frame, while the second binding frame uses the address written after the binding frame.

The physical address to be recorded in each binding frame, as mentioned above, may consist of a 4-byte valid physical address, 1 reserve byte, and 4-byte parity. In this case, 4-byte parity is obtained by applying the channel coding system RS (9, 5, 5) to 5 bytes.

In addition, a 4-byte valid physical address consists of a 27-bit address and a 5-bit address identifier, which is used to distinguish between individual physical addresses in the binding areas.

As the address identifier, the pair '00000/11110' or '00001/11111' can be used. If the first (or last) is used, '00000' (or '00001') is included as a physical address in one binding frame, while '11110' (or '11111') is included as a physical address in another binding frame.

An explanation has been given above that describes that a new frame sync signal 'FS n', which is different from a clock signal 'FS0-FS6' for data frames recorded in physical clusters, can be used for linking frames. In the case of using new frame sync signals other than sync frames, the data to be recorded in physical clusters is encrypted together with the frame sync in the link frame so that the digital information recorded on the BD-ROM can be protected from illegal copying.

Although information containing such encrypted data and recorded on the BD-ROM is copied to a rewritable disc, such as BD-RE, the new frame sync signal 'FS n' in the link frame is not copied to BD-RE, and is not created when recording BD-RE. That is, the key used during encryption cannot be obtained when playing back information copied to the BD-RE, so it cannot be decrypted. Consequently, the information on the BD-RE can be protected from illegal copying.

The above-described structure of the binding region on a read-only, high density recording medium in accordance with the present invention provides playback compatibility with a rewritable recording medium such as BD-RE during playback by a disc player or drive. In addition, the presented structure of the binding region enables the disc player or drive, if necessary, to perform appropriate operations when distinguishing between read-only recording medium and rewritable medium. Moreover, by the above-described methods in the field of binding useful information can be recorded with high reliability.

Although certain specific embodiments of the present invention have been presented, it is noted that the present invention can be carried out in other forms without departing from its essence and basic characteristics. Thus, the presented embodiments of the present invention should be considered in all respects as illustrative and not limiting, the scope of the invention is indicated by the attached claims, and all changes that occur within the essence and range of equivalence of the claims are considered to be covered by the present invention.

Claims (24)

1. A recording medium comprising a binding region for linking two adjacent data sections, comprising at least two binding frames of the same size; wherein each linking frame contains at least one clock signal and digital data, and said digital data includes a predetermined combination of data preceded by said clock signal. 2. The recording medium according to claim 1, in which the aforementioned clock is different from the clock recorded in the data section. 3. The recording medium according to claim 1, in which the aforementioned clock signal is different from the clock signal used on the recording medium intended for recording. 4. The recording medium according to claim 1, wherein said binding region has the same size as the binding region of the recording medium for recording in order to link two adjacent data sections. 5. The recording medium according to claim 1, in which each frame binding has 1932 channel bits. 6. The recording medium according to claim 5, in which said clock signal has 30 channel bits, and said digital data has 1902 channel bits in each linking frame. 7. The recording medium according to claim 6, in which said digital data from 1902 channel bits begin with a given combination of data. 8. The recording medium according to claim 2, in which each clock signal consists of a synchronization combination and a combination of identification of the clock signal, wherein the combination of identification of the clock signal is '100 101', '101 010', '010 101' or '101 001'. 9. The recording medium according to claim 1, in which the specified combination of data is '00'. 10. The recording medium according to claim 1, in which the specified combination of data is '08h'. 11. The recording medium of claim 10, wherein the entire space beyond the value '08h' is filled with '00h' in each linking frame. 12. A method of generating data on a recording medium, comprising forming a binding region including at least two binding frames of the same size, for linking two adjacent data sections, each binding frame comprising at least one clock signal and digital data, a process of recording data on a recording medium, wherein said digital data includes a predetermined combination of data preceded by said clock signal. 13. The method of claim 12, wherein each linking frame including said clock signal other than the clock signal recorded in the data section is formed in the generation operation. 14. The method of claim 12, wherein said clock signal is different from a clock signal recorded on a recording medium for recording during data recording. 15. The method of claim 12, wherein said binding region is the same size as the binding region of the recording medium for recording in order to link two adjacent data sections. 16. The method according to item 13, in which each clock signal consists of a synchronization combination and a combination of identification of the clock signal, which corresponds to '100 101', '101 010', '010 101' or '101 001'. 17. The method of claim 12, wherein the predetermined data combination is '08h'. 18. A method of reproducing a recording medium comprising using a binding area for linking two adjacent data sections comprising at least two binding frames of the same size, wherein each binding frame contains at least one clock signal and digital data, and said digital the data includes a predetermined combination of data preceded by said clock signal. 19. The method of claim 18, wherein, in a use operation, a clock included in the binding region is detected, whether the current playback position is a binding region based on the detected clock. 20. The method according to claim 19, in which the determination operation includes the operation of comparing the detected clock signal with the specified clock signal, while the determination operation determines that the current playback position is the binding area if the detected clock signal is the same as the predetermined clock signal in accordance with result of a comparison operation. 21. The method according to claim 19, further comprising continuing playback, if it is determined that the current playback position is not a binding region. 22. The method according to claim 19, further comprising interrupting playback so as not to output data included in the binding area if it is determined that the current playback position is the binding area. 23. A device for reproducing a recording medium comprising an optical head reading data recorded on a recording medium, the recording medium including a binding region including at least two binding frames of the same size, each binding frame containing at least one a clock signal and digital data, and said digital data includes a predetermined combination of data preceded by said clock signal; and a control unit determining whether the current reproduction position is a binding region based on a signal read by the optical head and controlling reproduction in accordance with the determination result. 24. The device according to item 23, in which the control unit controls playback so that the data is played back continuously if it is determined that the current playback position is not a binding area, and the data included in the binding area is not output if it is determined that the current position reproduction is a binding area.

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