JP2002150681A - Method and device for recording and reproducing digital signal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording and reproducing device which realizes real-time recording and reproducing by slip processing. SOLUTION: The device is provided with a means which reads out scrambled data recorded in a temporary storage means and adds another ID to this data and scrambles it again and records it, and scrambled protection data obtained by adding another ID to data after modulation processing is prepared during write to an optical disk of this data, and protection data are written on the optical disk continuously at the time when an optical disk write error has occurred. Even in the case of the occurrence of a write error, all data recorded in the temporary storage means can be continuously written on the optical disk without reading in data from a host again.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk recording / reproducing apparatus on which digital signals are recorded.

[0002]

2. Description of the Related Art A DVD (digital versatile disk) is a medium having a capacity approximately seven times that of a CD (compact disk). As a medium for recording data on a DVD, there are DVD-RAM, DVD-R, and DVD-RW. Media that can be recorded can be said to be the most promising field in the future, as seen in the growth of CD-Rs in recent years.

[0003] Data on a physical disk is handled by a sector structure unit of several bytes, and the sectors are called a "data sector" 905, a "recording sector" 907, and a "physical sector" 908 according to the stage of signal processing. FIG. 9 shows a processing order (encoding processing procedure) for configuring a physical sector. FIG. 10 shows a sector structure.

As shown in FIG. 10, a "data sector" 905 includes 2048 bytes of main data, 12 bytes of identification address information of data such as an ID, and an error detection code (EDC: Error Decode).
20 bytes of data consisting of 4 bytes of the Tection Code) and 172 bytes x 12 rows. After EDC calculation, 2048 bytes of main data of “data sector” 905 are scrambled. Further, a cross-Reed-Solomon error correction code is added over 16 “data sectors” 905 constituting the ECC block.

[0005] A "recording sector" 907 is a sector to which an ECC code has been added, and is a "data sector" 905 to which an outer code parity PO and an inner code parity PI have been added. PO and PI are generated in an ECC block formed for every 16 “data sectors” 905. The “physical sector” 908 is the
A synchronization signal (SYNC code) is added to the beginning of every 91 bytes,
This is the sector after modulation by 16 conversion.

[0006] ID 1001 in FIG. 10 is the sector information (Data Fi
eld Information) 1 byte and sector number (Data Field)
Number) consists of 3 bytes. The sector information is a format type (Sector Format) in the optical disc.
Type), Tracking Method, and Reflectivity. Furthermore, an area type (Area Typ) representing the data area and the lead-in / lead-out area
e), a data type indicating whether the data is read-only data or data for additional writing / rewriting, and a layer number indicating a layer of the optical disc. The sector number is a serial number given to the data area.

[0007] EDC 1005 shown in FIG. 10 is a check code added to 2060 bytes of a data sector before scrambling. Based on the EDC code 1005, it is checked whether the scramble is correct or not, and after the error correction has been performed, whether or not the erroneous correction has been performed.

FIG. 11 is an ECC block diagram. The ECC block is formed of 16 "data sectors" 905 scrambled as information fields. 172 bytes x 12 lines x
172 bytes × 192 rows equal to 16 data sectors are used as information fields, and 16 bytes of outer code parity PO 1103 are added to each of 172 columns to form an outer code of Reed-Solomon RS (208, 192, 17). Next, 10 bytes of the inner code parity PI 1102 are added to all 208 rows including the PO 1103, and RS (182,172,1
Form the inner code of 1).

The ECC block shown in FIG. 11 is interleaved, modulated, and recorded on an optical disk.
After the interleaving, 16 rows of outer code parity PO are inserted every 12 rows of the data area. The portion of 13 rows x 182 bytes in the ECC block after the row interleaving is called a "recording sector" 907 as described above, and the ECC block after the row interleaving is composed of 16 "recording sectors" 907. Means

FIG. 7 is a block diagram showing the configuration of a conventional digital signal recording / reproducing device as an example of a digital signal recording / reproducing device in which the above-described encoding processing procedure is implemented as a circuit. FIG. 7 shows, as seen in Japanese Patent Application Laid-Open No. H11-213575, an arrangement including an encoding processing circuit unit for performing recording processing and a decoding processing circuit unit for performing reproduction processing, thereby realizing recording and reproduction of an optical disk.

In FIG. 7, reference numeral 101 denotes an optical disk; 102, a pickup for recording / reproducing data on the optical disk 101;
03 is a spindle motor for rotating the optical disk.
Reference numeral 104 denotes a servo for controlling the spindle motor 103 and the like. 105 is a laser driver. Reference numeral 106 denotes a modulation / demodulation unit that performs data modulation / demodulation processing, 107 denotes a RAM control unit that controls RAM access from each unit, and 108 denotes an input / output unit that performs data scramble and descramble processing and controls access to an interface. . Reference numeral 109 denotes a read channel for performing waveform equalization processing, binarization, and generation of a synchronous clock of an analog reproduction signal read from the optical disk 101. An error correction code 110 adds an error correction code to ECC block data during recording and performs error correction during reproduction.
Reference numeral 111 denotes a RAM. Reference numeral 112 denotes an interface that controls input / output of data with the host device, and reference numeral 113 denotes a microcomputer that controls the system.

An encoding procedure in the recording / reproducing apparatus shown in FIG. 7 will be described. Data input from the interface 112 is scrambled by adding an ID or EDC by the input / output unit 108 and recorded in the RAM 111 via the RAM control unit 107. The ECC block data stored in the RAM 111 is
It is read out via the AM control means 107. An error correction code is added to the read data and stored in the RAM 111 again. The block data to which the error correction code has been added is read out by the modulation / demodulation means 106, subjected to an interleaving process and a modulation process, and recorded on the optical disc 101 via the laser driver 105 and the pickup 102.

FIG. 8 shows a timing chart of each block processing of the scramble processing in the input / output means, the error correction code addition processing in the error correction / code addition means, and the modulation processing in the modulation / demodulation means.

The RAM 111 of the present apparatus has a capacity of several blocks and is configured as a ring buffer, and the numbers in the figure are the serial numbers of the blocks allocated to the RAM constituting the ring buffer. In the scramble processing, the error correction code addition processing, and the modulation processing as the order of the encoding processing procedure, the following processing is performed on the block-based data for which the higher-order processing has been completed. That is,
First, an error correction code adding process is performed on the scrambled block. Next, modulation processing is performed on the block to which the error correction code has been added. Hereinafter, the following processing is sequentially performed on the scrambled blocks in block units.

However, the optical disk 101 of the modulated data
Writing to the writer cannot always be completely recorded. A writing error may occur due to some defect or a system error. In this case, as an alternative process, a method of writing an error sector into a space area prepared in advance is used. When data is recorded / reproduced by accessing before and after a defective sector, the performance is significantly reduced due to seek and rotation waiting because an alternative area of the defective sector is accessed. Therefore, it is not suitable for recording and reproducing AV data such as moving images.

Further, as another method of replacing the defective sector, there is a method of recording from the sector next to the defective sector (or the next block) by slip processing. Although the access delay due to the defective sector is small, all the sector numbers after the defective sector are shifted. Unless the slip sector is recognized before recording on the optical disc by reading the PDL (Primary Defect List) in the defect management data area, etc. When a recording error occurs, an ID including a sector number assigned to the sector data needs to be re-assigned in order to record in the next sector.

The scramble data is data obtained by adding M-sequence data obtained from an initial value obtained from an ID sector number to original data. For this reason, when the ID is reassigned, the M-sequence data differs, so that the scramble operation must be performed again on the original data. For this reason, the same data is input again from the interface 112, scrambled, added with an error correction code, and modulated by another ID again, and recorded on the optical disc 101. This makes real-time recording impossible.

[0018]

As described above, when a write error occurs during recording on an optical disk, it is necessary to skip the sector in which the error has occurred and write to the alternative area or the next area. When it is necessary to record and reproduce AV data and the like in real time, it is necessary to prevent a significant decrease in performance.

An object of the present invention is to provide a recording / reproducing apparatus which enables real-time recording / reproduction by slip processing.

[0020]

SUMMARY OF THE INVENTION The present invention has means for re-scrambling a block stored in a memory to which a scramble and an error correction code have been added by replacing an ID, and without re-reading from an interface. It is characterized in that data is written to the optical disk following the block in which a write error has occurred.

[0021]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of a digital signal recording / reproducing apparatus according to a first embodiment of the present invention.

An optical disk 101, a pickup 102 for recording / reproducing data on the optical disk 101, and a spindle motor 103 for rotating the optical disk. Reference numeral 104 denotes a servo for controlling the spindle motor 103 and the like. 105 is
It is a laser driver. Reference numeral 106 denotes a modulation / demodulation unit that performs data modulation / demodulation processing, 107 denotes a RAM control unit that controls RAM access from each unit, and 108 denotes an input / output unit that performs data scramble and descramble processing and controls access to an interface. . Reference numeral 109 denotes a read channel for performing waveform equalization processing, binarization, and generation of a synchronous clock of an analog reproduction signal read from the optical disk 101. 11
Numeral 0 denotes an error correction / code addition means for adding an error correction code to ECC block data at the time of recording and error correction at the time of reproduction, and 111 denotes a RAM. Reference numeral 112 denotes an interface that controls input / output of data with the host device, and reference numeral 113 denotes a microcomputer that controls the system. Reference numeral 114 denotes re-scramble means for re-scramble the data on the RAM 111 and rewriting the ID, and writing the scrambled data.

The operation of the digital signal recording / reproducing apparatus shown in FIG. 1 will be described below.

In the first embodiment of the present invention, a re-scrambling means 114 is added to the conventional recording / reproducing apparatus, and scrambled optical disk unfinished data stored in the RAM 111 is once scrambled. A new ID can be added to the read and scrambled data, scrambled again, and recorded in the RAM 111.

Hereinafter, the recording process in FIG. 1 will be described. The data input from the interface 112
The ID is added and scrambled by the input / output unit 108, and is recorded in the RAM 111 via the RAM control unit 107. Next, the data is read from the RAM 111 by the error correction / code addition means 110, and the data is calculated.
An error correction code in the PI and PO directions is added. The data in the ECC block unit as shown in FIG. 11 to which the error correction code is added is subjected to modulation processing by the modulation / demodulation means 106, and is recorded on the optical disk 101 via the LD driver 105 and the pickup 102.

If a recording error occurs when recording the modulated data on the optical disk, the next data to be re-recorded is required. Therefore, data is prepared by re-scrambling the data stored in the RAM 111 by the re-scrambler 114 during the process of writing the block data on the optical disk.

FIG. 6 shows a detailed block diagram of the re-scrambling means 114. Reference numeral 601 denotes descrambling means for descrambling data, 602 denotes scrambling means for scrambling data, and 603 denotes ID generating means.

The operation of the re-scrambling means shown in FIG. 6 will be described below. Through RAM control means 107, RA
The scrambled data read from M 111 is once scrambled by descrambling means 601. Therefore, the new ID generated by the ID generation means 603 is added to the descrambled main data, scramble processing is performed by the new ID in the scramble means 602, and the data is recorded again in the area of the RAM 111. Therefore, whether the next block data or the protection data obtained by re-adding the ID to the data in which the error has occurred is recorded on the optical disk next is switched depending on whether or not there is an error in writing to the optical disk. Thereby, even if a write error occurs, the block data can be recorded by slipping continuously.

FIG. 4 shows a timing chart of a block process at the time of a write error and a memory access diagram at the time of a re-scrambling process. RAM used in the recording / reproducing apparatus of the present invention
111 secures an area for n blocks, and further secures one block (X plane in the figure) for protection. The numbers in the figure are the block numbers allocated to the memory (i and n are natural numbers.
Here, i ≦ n), and the circle in the memory access diagram is the writing output surface on the optical disk. However, the re-scramble processing in the figure includes all the time for reading while descrambling, the time for scrambling with a new ID, and the processing time for adding an error correction code to the scrambled data.

As shown in the figure, a block number i (ID: i, data: i) to which scramble and error correction code are added
During the time when the data is written by performing the modulation processing on the block data of ID = i + 1 for the block number i.
To perform a re-scrambling process (adding an error correction code), and record the data and the correction code on the X plane for protection. Further, protection of the next block is continuously performed. Before a write error occurs, scrambling is performed again while keeping the ID of the next block (block number i + 1) as it is.

When a write error occurs (in the figure),
Subsequently, the data stored on the protection surface X is output (in the figure). For the data at the time of the error (i + 1), set the ID to i + 1
Output the data changed from to i + 2. At the same time, since errors may occur continuously, re-scrambling is also performed. However, at the time of outputting the X plane of the protection plane, the area (i + 1 plane) of the original data is overwritten again. In addition, since the ID of all data after the write error is shifted, re-scrambling is performed for the next block by incrementing the ID by 1, and the scrambled data and the correction code are recorded in the RAM 111 again. Therefore, when the output of the protection data is completed without a write error, the output of the next block surface i + 2 with the shifted ID is continuously performed (in the figure).

By protecting the output data and the data after the next block, even if there is a write error, all the data stored in the RAM 111 is modulated, and the data is not stored in another alternative area. Writing can be performed on the optical disk 101 following the area. However, since the next block data protection before the write error is overwriting of the same data, switch according to the presence or absence of the error,
This can be realized even without the processing, and unnecessary RAM access can be reduced.

FIG. 5 is a timing chart of a block process when an error occurs continuously. In addition to the block number i + 1, the block number i + stored on the X plane
It is assumed that the writing of the protection block 1 to the optical disk continuously causes a writing error. In the present embodiment, even when the protection data is written to the X-plane, the data i + 1 recorded on the X-plane is further protected, so that the protection is continued even after the second write error. Optical disk writing. Similarly, since the next block after the occurrence of the write error is protected, it can be output continuously.

In this processing, two modulations are output within one block output time.
It is assumed that the re-scrambling process for blocks and the addition of an error correction code are completed. If the re-scrambling process (addition of an error correction code) for two blocks takes more time than the one block process for modulation, the modulated data is transferred to the optical disk. Writing is awaited. This can be realized by performing the scrambling and descrambling processing and the error correction code adding processing at a higher speed than the writing speed to the optical disk.

The information of the write error block is as follows.
By recording the information in an SDL (Secondary Defect List) or the like in the defect management data area, access during reproduction can be processed without any problem. Normally, the SDL records a physical block address of a defective sector and a replacement block address as a secondary defect list. In the case of the present embodiment, the address of the write error block is recorded.

Further, in the embodiment of the present invention, it has been described that the protection surface is set to one surface, and when the protection surface is output, the data is overwritten on the surface of the original data.
At the time of surface output, it can be similarly realized by writing on another protection surface.

The processing at the time of reproduction in FIG. 1 will be described. The data read from the optical disc 101 is
In the read channel 109, waveform equalization processing of an analog reproduction signal, binarization, and generation of a synchronous clock are performed. The generated digital signal is input to the modulation / demodulation means 106, subjected to ID detection and demodulation processing, and sent to the RAM 111 via the RAM control means 107.
Recorded in. The data recorded in the RAM 111 is read out by the error correction / code addition means 110, and performs error correction on the data on the RAM 111. The error-corrected data stored in the RAM 111 is subjected to a descrambling process by the input / output unit 108 and output to the interface 112.

At the time of reproduction, when a sector registered in the PDL is detected, slip processing is performed, and error sectors are slipped to reproduce data in sector units. Similarly, PDL
In addition to the above, when the head sector of the block at the time of the write error registered in the SDL is detected, it is handled in the same manner as the slip process instead of the replacement process, and the error block at the time of the write is slipped and reproduced.

As described above, according to the first embodiment of the present invention, the data is re-read from the host by adding and controlling the means for re-scramble the data on the RAM in addition to the ordinary digital signal recording / reproducing apparatus. Without recording, all data once recorded on the RAM can be continuously recorded on the recording area of the optical disk regardless of the occurrence of a write error.

Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 2 shows an error correction / code addition means in the digital signal recording / reproducing apparatus of FIG. 1 according to the first embodiment.
FIG. 11 is a block diagram showing the configuration of a digital signal recording / reproducing apparatus in which only the sign addition function in the PI direction is reduced from the sign addition function of 110 and the rescramble means 114 is also used.
201 is an error correction / PO code adding means, 202 is a PI code addition /
It is a re-scrambling means.

The error correction code addition at the time of recording processing is as follows.
This must be performed in both the PI direction and the PO direction in FIG. Further, since the reading in the descrambling process by the re-scrambling means is in the same direction as the reading in the PI direction, the reading in adding the error correction code in the PI direction and the reading in the re-scrambling process can be shared. However, if the ID is changed during the re-scrambling process, it is necessary to add the PI code to the re-scrambled data. Therefore, it is necessary to switch the processing depending on whether or not the re-scramble processing is performed.

Hereinafter, the operation of the digital signal recording / reproducing apparatus shown in FIG. 2 will be described.

The recording process in FIG. 2 will be described.
The data input from the interface 112 is subjected to ID addition and scramble processing by the input / output
The data is recorded in the RAM 111 via the control means 107. Next, the ECC on the RAM 111 by the PI code adding / rescrambling means 202
The data in the PI direction in the block data is read out, operated, and an error correction code in the PI direction is added.

Next, the data is read out from the RAM 111 in the PO direction by the error correction / PO code adding means 201, operated, and a PO error correction code is added to the scrambled data. The data in units of ECC blocks as shown in FIG. 11 to which error correction codes of PI and PO are added are subjected to modulation processing by the modulation / demodulation means 106, and are recorded on the optical disk 101 via the LD driver 105 and the pickup 102.

During recording processing on the optical disk 101, write data is protected so that continuous writing is possible even when a write error occurs. As shown in the timing charts of the modulation and re-scramble processing in FIGS. 4 and 5, the modulation write block and the next block are re-scrambled by changing the IDs within the block-unit modulation processing time, and re-scrambled. The scramble data is written to the RAM 111. The re-scrambling process is performed by the PI code addition / rescrambling means 202 by switching depending on whether ID replacement is necessary.

FIG. 3 is a timing chart at the time of recording processing in the digital signal recording / reproducing apparatus of the second embodiment. The time course of the scramble processing in the input / output means 108, the PI code addition and re-scramble processing in the PI code addition / rescrambling means 202, the PO code addition processing in the error correction / PO code addition means 201, and the modulation processing in the modulation / demodulation means 106 are shown. .

The numbers in the figure are the serial numbers of the blocks allocated to the RAM constituting the ring buffer. Also, circles in the PI code addition and re-scramble processing in the figure indicate the execution of the re-scramble processing, and the parts without the circles indicate the processing of only the PI code addition. The PI code and the PO code are added to the scrambled data, modulated, and recorded on an optical disc. As a protection against a recording error, correction code addition and re-scramble processing are performed on the modulation processing block and the next modulation processing block within the modulation processing time.

For example, in the modulation output processing time of the i-block, the ID is incremented by one block for the i-block, and the re-scrambling process and the sign addition are performed. Also, for the i + 1 of the next block, only a PI code addition and a PO code addition to ordinary existing data are performed before a write error. However, after a write error occurs (after the modulation process of i + 1 'in the figure), the ID is incremented by one block and re-scrambled, and a PI code is added to the re-scrambled data, and a PO code is added. Perform addition. However, the control in the RAM 111 at the time of the scramble processing is based on the processing of the memory access diagram shown in FIGS. Therefore, by performing re-scramble processing and adding an error correction code to the optical disk write block and the next write block and generating block data, it is possible to continuously write the block data recorded in the RAM 111 to the optical disk 101. Becomes

The information of the write error block is as follows.
By performing recording on the SDL or the like in the defect management data area and performing slip processing based on the information recorded on the SDL or the like at the time of access during reproduction, reproduction can be realized without any problem.

As described above, according to the second embodiment of the present invention, the data is re-read from the host by adding and controlling the means for re-scramble the data on the RAM in addition to the ordinary digital signal recording / reproducing apparatus. Without recording, all data once recorded on the RAM can be continuously recorded on the recording area of the optical disk regardless of the occurrence of a write error. In addition, reading of the row direction data with the PI code added and reading in the row direction at the time of re-scrambling are also used.
By controlling the switching of write data to M, access to RAM can be reduced.

[0052]

According to the digital signal recording / reproducing apparatus of the present invention, even when a write error has occurred on an optical disk, the data whose ID has been reassigned is continuously output, so that the host does not need to re-read the data. Thus, the data recorded in the RAM can be continuously written on the optical disk. Therefore, it is possible to realize a recording / reproducing apparatus capable of real-time recording / reproducing by slip processing.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a digital signal recording / reproducing apparatus according to a first embodiment.

FIG. 2 is a block diagram illustrating a configuration of a digital signal recording / reproducing apparatus according to a second embodiment.

FIG. 3 is a timing chart of an encoding process in a second embodiment.

FIG. 4 is a timing chart (1) of recording error data protection in the first embodiment.

FIG. 5 is a timing chart (2) of recording error data protection in the first embodiment.

FIG. 6 is a detailed block diagram of a re-scrambling unit of the digital signal recording / reproducing apparatus according to the first embodiment.

FIG. 7 is a block diagram showing a configuration of a conventional digital signal recording / reproducing apparatus.

FIG. 8 is a timing chart of an encoding process.

FIG. 9 is a diagram showing an encoding processing procedure.

FIG. 10 is a format diagram showing one data sector.

FIG. 11 is a format diagram showing one ECC block data.

[Explanation of symbols]

101 optical disk, 102 pickup, 103 spindle motor, 104 servo, 105 laser driver, 106
... Modulation / demodulation means, 107 ... RAM control means, 108 ... Input / output means, 1
09: Read channel, 110: Error correction / code addition means, 1
11 RAM, 112 interface, 113 microcomputer, 114
... rescrambling means, 201 ... error correction / PO code adding means, 202 ... PI code adding / rescrambling means, 601 ... descrambling means, 602 ... scramble means, 603 ... ID generation means, 901 ... ID data, 902 ... ID + IED, 903… ID + IED + RSV +
Main data, 904 ... data sector before scrambling, 9
05: Data sector after scrambling, 906: 16 data sectors after scrambling, 907: 16 recording sectors, 908: Physical sector, 1001: ID, 1002: IED, 1003: RSV, 1004: Main data, 1005: EDC, 1101 ... Sector data, 1102 ... P
I, 1103… PO

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5D044 AB05 AB07 BC04 CC04 DE62 EF03 EF10

Claims (11)

[Claims] 1. A sector is divided into byte units, at least an identification address and an error detection code are added, an error correction code is added to form a sector, a block is formed in i (i: natural number) sector units, and j (j : A natural number) In a digital signal recording / reproducing apparatus which divides data into units of bytes, adds a synchronization signal to form a frame, and records / reproduces an optical disk on which frame data is modulated and recorded, Input means for scrambling and temporarily storing the data, a temporary storage means for temporarily storing the data, and reading out the scrambled data in the temporary storage means, performing an error correction code operation, and adding a correction code. Means for writing, and means for modulating the data to which the error correction code has been added according to a modulation rule, further comprising: Scrambled again by adding a different identification address to crumble processed sector data, the digital signal recording and reproducing apparatus characterized by comprising means for recording in the temporary storage means. 2. The means for adding another identification address and scrambling and recording the data includes means for scrambling and reading data in the temporary storage means, means for adding another identification address, and scrambling. Means for temporarily storing data in the temporary storage means, scrambling the scrambled data recorded in the temporary storage means, reading it out, adding another identification address thereto, and scrambling with the different identification address. 2. The digital signal recording / reproducing apparatus according to claim 1, wherein the digital signal is recorded again in the temporary storage means. 3. Within the time period for performing one block of data modulation processing on the block data recorded in the temporary storage means, another block is simultaneously processed with respect to the data of the two blocks of the modulation processing block and the next processing block. 3. The digital signal recording / reproducing apparatus according to claim 1, wherein a scrambling process is performed by adding an identification address, and an error correction code is added again. 4. The temporary storage means records data after scrambling by adding a data recording area for m (m: natural number) blocks and another identification code for n (n: natural number) blocks. 4. The digital signal recording according to claim 3, further comprising a protection area, wherein data which is scrambled by adding another identification address to the block being modulated in the data recording area is recorded in the protection area. Playback device. 5. The data processing apparatus according to claim 3, wherein data scrambled by adding another identification address to a processing block subsequent to said modulation processing block is written over an original data recording area. Digital signal recording and playback device. 6. When the recording of the modulation processing data on the optical disk fails, the data recorded on the protection area is recorded on the optical disk following the data on which the recording failed, and blocks after the recording failure block are 6. The digital signal recording / reproducing apparatus according to claim 4, wherein a slipping process is sequentially performed for one block to record subsequent data. 7. An identification address to be added to data recorded in said temporary storage means according to claim 2 is a value obtained by incrementing k (k: natural number) blocks with respect to an already added identification address. 3. The digital signal recording / reproducing apparatus according to claim 2, wherein: 8. When the recording of the modulation processing data on the optical disk fails, information of a block where the recording has failed is stored in a defect management data recording area on the optical disk.
2. The digital signal recording / reproducing apparatus according to claim 1, wherein at the time of reproduction processing, the recording failure block information recorded in the defect management recording area is read out, and the defective block obtained from the block information is slipped and reproduced. 9. Data is divided into h (h: natural number) bytes, and at least an identification address and an error detection code are added;
A sector is formed by adding an error correction code, a block is formed in units of i (i: natural number) sectors, divided into data of j (j: natural number) bytes, and a frame is formed by adding a synchronization signal. A digital signal recording / reproducing apparatus for recording / reproducing an optical disc on which frame data is further modulated and recorded, wherein the data forms an m × n matrix,
Add the error correction code of, and configure the block data by adding the second error correction code for each row, is modulated,
A temporary storage unit for temporarily storing the data, an input unit for scrambling the data and recording the data in the temporary storage unit, and reading matrix-like data in the temporary storage unit in a row direction to perform an error correction code operation. Means for performing a second correction code in the row direction, means for reading in the column direction to perform an error correction code operation, and writing the first correction code in the column direction, and applying the error correction code-added data in accordance with a modulation rule. Means for modulating and outputting the data, further reading out the matrix-like data recorded in said temporary storage means in the row direction, re-adding another identification address to said sector data, scrambling, and again storing said temporary data. A digital signal recording / reproducing apparatus characterized by comprising means for recording. 10. A method according to claim 9, wherein said another identification address is added to said matrix-like data recorded in said temporary storage means to read data in a row direction by means of scrambling; The means for adding an error correction code in the row direction is also used, and writing of only the second error correction code in the row direction to the read data and another identification address are performed depending on whether recording to the optical disk has failed. A digital signal recording / reproducing device, which controls by switching between scrambled data and writing of a second error correction code to the scrambled data. 11. Data is divided into units of h (h: natural number) bytes, and at least an identification address and an error detection code are added, and an error correction code is added to form a sector.
A block is composed of (natural number) sectors, divided into data of j (j: natural number) bytes, a synchronization signal is added to form a frame, and an optical disk on which frame data is modulated and recorded is reproduced. In the digital signal recording / reproducing method, the input data is scrambled and recorded in a temporary storage means, the scrambled data in the temporary storage means is read, an error correction code operation is performed, a correction code is added, and a temporary After writing to the storage means, the data to which the error correction code has been added is modulated according to the modulation rule, and another identification address is added to the scrambled sector data recorded in the temporary storage means to scramble again. A digital signal recording / reproducing method characterized by recording in a temporary storage means.