KR910001335B1 - Duplicating disc - Google Patents

Abstract

The present invention relates to a duplicated disc in which data recorded on a first optical disc having a sector structure is reproduced and copied onto a second optical disc.

According to an embodiment of the present invention, whether or not a corresponding sector of a first optical disc is a sector in which data is normally recorded, a sector identifier part defective sector, a data feed part defect sector, or no signal recording by using sector data identification information. A copying disc for copying sectors corresponding to one sector from the first optical disc to the second optical disc by controlling the signal of the recording means to the second optical disc by determining whether it is a sector, in particular a sector on which data is recorded and an unrecorded disc. There is provided a duplicated disk comprising a sector in which a marking signal is recorded in the data feed section of the data recording section and an unrecorded sector in which no signal is recorded in the data feed section.

In the present invention, the second optical disc includes a data feed part comprising data, data identification information, and an error correcting code generated for the data and the data identification information, and the data recording sector is used as the data identification information. It is to provide a duplicated disk in which a marking sector or an unrecorded sector is distinguished.

Description

Clone disk

1 is a block diagram of a disk copying apparatus using the copy disk of the present invention.

2 (α) is an explanatory diagram of an example of data written from the controller A (2) to the host CPU (1).

2 (b) is an explanatory block diagram of controller A (2).

3 is a detailed block diagram of controller B (6).

4 is an explanatory diagram showing an example of sectors recorded on the optical disc according to the embodiment.

5 is a configuration diagram of a data feed unit of the present invention.

6 is an explanatory diagram showing an example of a sector recorded using the same drawing.

7 is a block diagram of a disk replication apparatus of a conventional optical disk.

* Explanation of symbols for main parts of the drawings

1: Host CPU 2: Controller A

3: optical disc drive 4: optical disc

5: memory 5a, 5b: RAM1 and RAM2

6: Controller B 7: Disc recorder

8: ID generator 9,24: user data

10: sector data identification information 11: buffer memory,

12: error correction call generation unit 13: sector buffer,

14: digital modulator 15: selector,

16: signal synthesis unit 17: CPU,

18: ID signal reproducing section 19: sector address comparison section,

20: marking signal generator 21: data feed signal,

22: marking signal 23: synchronization pattern,

25: data identification information 26: error correction detection code,

50: magnetic tape 51: magnetic tape drive,

52: host CPU 53: magnetic disk drive,

54: disc formatter 55: disc recording unit,

100: sector data identification information write data 101: data input,

102: data output 103: write data signal,

104: sector ID signal 106: RAM switching control signal,

111: signal selection signal 112: data modulation signal,

113: miking signal 114: unmodulated signal,

118: Sector data identification signal 119: Sector matching signal.

The present invention relates to a duplicated disc for reproducing data recorded on a first optical disc having a sector structure and copying it to a second optical disc.

The present invention provides reproducing means for reproducing a first optical disc on which user (user) data has been recorded, additional means for adding sector data identification information indicating a state of use of a sector to the reproduced data, and data on the second optical disc. By means of the sector data identification information using a disk copying apparatus having a recording means for recording a recording medium, a recording control means for controlling a recording operation of the recording means, and a transfer means for transmitting user data and sector data identification information to the recording means. Whether the corresponding sector of the first optical disc is a sector in which data is normally recorded, a sector identifier part defective sector, a data feed part combining sector, or a non-signaled sector is used to determine the signal of the recording means to the second optical disc. A copy disk for controlling and copying sectors corresponding to one sector from the first optical disk to the second optical disk, in particular, a section in which data is recorded. And to provide a signal and recording the king Maacah the unrecorded portion of the data sector blood Ile, replica disk consisting of an unrecorded sector is not the signal is recorded in the data P Ile unit.

In the present invention, the second optical disc includes a data feed part comprising data, data identification information, and an error correcting code generated for the data and the data identification information, and the data recording sector is used as the data identification information. In other words, a duplicated disk is provided which distinguishes a marking sector or an unrecorded sector.

Fig. 7 shows a block diagram of a disk copying apparatus of a conventional optical disk, where 50 is a magnetic tape containing user data, 51 is a magnetic tape drive, 52 is a host CPU such as a minicomputer, ( Reference numeral 53 denotes a large capacity magnetic disk drive, 54 a disk formatter, and 55 a disk recording section.

In the conventional disk copying apparatus constructed as described above, data recorded on the optical disk is supplied to the magnetic tape 50. The magnetic tape 50 recording the user data is suspended on the magnetic tape drive 51 so that all the user data is copied to the magnetic disk drive 53. The host CPU 52 reads user data in sector units from the magnetic disk drive 53 and transmits the user data to the disk format 54. The disc formatter 54 generates an identifier signal of a sector, generates an error correcting code of the user data, digitally modulates it, outputs it to the disc recording unit 55, and records it on an optical disc mounted in the disc recording unit 55. .

However, in the above structure, since the disk recording unit 55 needs to input a continuous write data signal which is not cut off in synchronization, a magnetic disk drive 53 having a capacity equal to or greater than that of the optical disk is required. This has the problem that a very expensive magnetic disk drive is required in view of the recording capacity of 100 MB of optical disks.

In view of this, the present invention uses the disk copying apparatus for directly copying user data to the optical disk using the optical disk recorded by the user directly without using the magnetic tape or the magnetic disk drive. In order to identify negative defects, there is provided a duplicated disc which duplicates a miking signal on the basis of an optical disc recorded in the data feed unit.

The disk duplication apparatus reads the user data from the first optical disk on which the user data has been recorded, in units of sectors, and adds the recording state of the sector to the read data of the second optical disk in addition to the read user data as sector data identification information. The sector data identification information includes a data recording sector display code indicating that the user data is recorded normally, a sector identifier (hereinafter referred to as ID) having information such as a track address or a sector address of the sector, or the recorded data. There is a marking sector display code indicating that a marking signal is recorded to indicate when an error is detected by the lidberry high check, and an unrecorded sector display code indicating that no data is recorded. The recording means on the second optical disc controls data recording on the second optical disc based on the sector data identification information.

1 is a block diagram of a disk duplication apparatus using the duplication disc of the present invention. In Fig. 1, reference numeral 1 denotes a host CPU which controls the entire apparatus, 2 denotes a controller A which controls optical disc reproduction, 3 denotes an optical disc drive, 4 denotes an optical disc in which a user has recorded data, 5 is a memory for absorbing the fluctuation of the data transfer speed between the optical disk drive 3 and the disk recording unit 7, and 5a and 5b are RAM1 and RAM2 having a double buffer configuration constituting the memory 5; 6) is a controller B for generating a write data signal 103 for recording data on a second optical disk, 7 is a disk recording section, 8 is an ID signal for generating a sector identifier (ID) signal 104; It is a generator. Reference numeral 100 denotes sector data identification information write data from the controller A (2), 101 denotes data input from the memory 5 from the host CPU 1, 102 denotes data output from the memory 5, ( 103 is a write data signal from the controller B 6, 104 is a track address, an ID signal including sector address information, 105 is a control status signal of the controller B 6, 106 is a memory ( The RAM switching control signal of 5), 107 is a control status signal of the disk recording unit 7, 108 is a control status signal of the sector ID generation unit 8, and 109 is a status signal of the memory 5; . Reference numeral 110 denotes a block signal for synchronizing the sector ID signal 104 with the disk rotation of the disk recording unit 7.

2 (a) shows an example of data read from the controller A 2 to the host CPU 1, where (9) is user data and (10) is sector data identification information.

FIG. 2 (b) is a block diagram showing the configuration of the sector data identification information generation unit in the controller A (2). In the figure, reference numeral 27 denotes a demodulation circuit for demodulating a reproduction signal from the optical disc drive 3, reference numeral 28 denotes a marking signal detection circuit for detecting a marking signal included in the reproduction signal, and An envelope detection circuit for detecting the envelope of the reproduction signal, an error detection correction circuit for performing an error detection correction process from the demodulated reproduction signal, 31 an error detection correction circuit 30, and a marking signal detection circuit. (28) A display code generation circuit generates a record sector display code, a marking sector display code, and an unrecorded sector display code by an output signal of the envelope detection circuit 29.

3 is a block diagram of one specific embodiment of controller B (6). In FIG. 3, reference numeral 11 denotes a buffer memory for temporarily storing the data output 102 of the memory 5, reference numeral 12 denotes an error correction code generation unit (EDAC) for adding an error correction code to user data; (13) shows a sector buffer for matching the signal transmission speed between the error correcting code generator 12 and the disc recording unit 7. (14) shows the user data and the error correcting code (2, 7). Code) A digital modulator for digital modulation such as modulation, 15 selects and outputs one signal from the data modulation signal 112, the marking signal 113, and the unmodulated signal 114 by the signal selection signal 111. The selector 16 is a signal synthesizing unit for synthesizing the selector output 115 and the sector ID signal 104, the microcomputer (CPU) which controls the operating system of the controller B 6, and 18. Is an ID signal reproducing unit for reproducing the sector ID signal 104 and outputting the address signal 117, and the target address signal (1) from the CPU 17 is shown in FIG. 16 and the address signal 117 are compared and the sector comparison output 119 activates the digital modulator 14 and the marking signal generator 20, and the address comparison part 20 is a marking signal. It is a marking signal generating unit for generating 113. Reference numeral 118 denotes a sector data identification signal read from the buffer memory 11.

The operation of the disk recording unit of the disk duplication apparatus configured as described above will be described below.

[1] The host CPU 1 activates the disk recording unit 7 with the control status signal 107 and the ID signal generator 8 with the control status signal 108.

[2] The host CPU 1 commands the controller A 2 to read data from the optical disc 4.

[3] The controller A 2 sends a search command to the optical disk drive 3, and the optical disk drive 3 searches for a target track.

[4] The controller A 2 reads a predetermined number of sectors from the target track and transfers the predetermined number of sectors to the host CPU 1. The controller A 2 adds the sector data identification information 10 to the read user data 9 and sends it to the host CPU 1 as the sector data identification information write data 100. The sector data identification information in the controller A (2) can be easily generated as follows.

(a) generation of a data sector display code indicating that the user data is recorded normally; The error correction code added to the user data is used to determine whether or not the reproduced data is correctly recorded user data.

(b) If there is a defect in the ID part having information such as sector track address or sector address, or if the recorded data has an error detected by the readberry high check, a marking signal is displayed to indicate ②. Generation of marking sector marking symbols to be displayed; Depending on the envelope length of the playback signal and the presence or absence of the marking signal, the marking sector display symbol (a) (when an envelope corresponding to the data and marking signal is detected) A marking sector display code B is generated (when an envelope corresponding to only the marking signal is detected).

(c) generation of an unrecorded sector display code indicating that no data is recorded; It is determined by the envelope of the reproduction signal.

[5] The host CPU 1 transfers the data read in [4] to the memory 5 as the data input 101. Data is written to RAM connected to the host CPU 1 in RAM1 and RAM2.

[6] The host CPU 1 starts the controller B 6 with the control status signal 105.

[7] The host CPU 1 repeats [4] and [5] to the final track of the optical disc, confirming that the connection with the input data 101 of the RAM1 / RAM2 of the memory 5 is switched by the status signal 109. do.

[8] The controller B 6 started from the control status signal 105 is a RAM switching control signal 106. The input data 101 of the memory 5 is stored in RAM1 (RAM2) and the output data 102 in RAM2. The RAM1 / RAM2 is switched so that (RAM1) is connected.

The controller B 6 draws sector data identification information write data from the data output 102 of the memory 5 into the buffer memory 11. The CPU 17 reads the sector data identification signal 118 from the memory 5 and analyzes the sector data identification information 10.

(a) when the sector data identification information 10 is a data recording sector display code; The CPU 17 instructs the signal selection signal 111 to output the selection of the modulation signal 112.

The error correcting code generation unit 12 generates and adds the error correcting code to the user data in the buffer memory 11, and writes it to the sector buffer 13. The CPU 17 sets the destination address signal 116 of the sector for recording data in the address comparison section 19, and the address signal 117 demodulating the sector ID signal 104 in the ID signal reproducing section 18. Compare with When the sector ID signal 104 coincides with the target address signal 116, the sector match output 119 activates the digital modulator 14 to perform digital modulation in synchronization with the optical disk of the disc recording unit 7. FIG. The data modulation signal 112 is selected by the selector 15 and applied to the signal synthesizing section 16. The data modulation signal 112 is added to the disk recording section 7 as the write data signal 103 by adding the sector ID signal 104.

(b) when the sector data identification information 10 is a miking sector display code; The CPU 17 instructs the signal selection signal 111 to output the selection of the marking signal 113. The CPU 17 sets the target address signal 116 of the sector for recording the marking signal 113 in the address comparison unit 19 and the address demodulated in the ID signal reproducing unit 18 by the address comparison unit 19. Compare with signal 117. When the sector ID signal 104 coincides with the destination address signal 116, the sector match output 119 activates the marking signal generation section 20, and synchronizes the marking signal 113 in synchronization with the optical disk of the disc recording section 7. And a marking signal 113 is selected by the selector 15 and applied to the signal synthesizing unit 16, and the sector ID signal 104 is added to the disc recording unit 7 as a write data signal 103. Is output.

(c) when the sector data identification information 10 is an unrecorded sector display code; The CPU 17 instructs the signal selection signal 111 to output the selection of the unmodulated signal 114. The CPU 17 sets the destination address signal 116 in the address comparison unit 19 and compares it with the address signal 177 demodulated by the ID signal reproducing section 18 from the sector ID signal 104. If the sector ID signal 104 matches the destination address signal 116, the selector 15 selects and outputs the unmodulated signal 1147 even if the sector match output 119 is output. The sector ID signal 104 is output to the disc recording unit 7 as the write data signal 103. This unmodulated signal 114 records guide grooves of a constant depth on the optical disc.

The above operation is performed until the memory 5 becomes empty, and soon, the memory 5 switches RAM1 / RAM2 to the memory 5.

[10] When the host CPU 1 finishes reading all of the optical disc 4, the control status signals 105, 107 and 108 control the controller B 6, the disc recording unit 7 and the ID signal generating unit (10). 8) Stop.

The disk rotation speed of the disk recording unit 7 is set lower than the disk rotation speed of the optical disk drive 3 in relation to the data transfer speed via the host CPU 1 from the controller A 2 to the memory 5. In addition, the capacity of RAM1 / RAM2 of the memory 5 has a sufficient capacity to take sufficient time for the defect of the optical disk 4 or the error recovery process of the optical disk drive 3. For example, it is decided to take a time allowance for retrying by error recovery processing such as search error, sector ID lead error, and data ECC error.

4 is a diagram showing an example of sectors recorded on the optical disc according to the present embodiment. FIG. 4 (a) shows the sector recorded by the user on the optical disc 4, and FIG. 4 (b) shows the shape of the sector of the second optical disc recorded by the disc recording unit 7. As shown in FIG. In Fig. 4, reference numeral 21 denotes a data feed signal of the data feed part, 22 a marking signal, and ID denotes a sector identifier part. In the sectors S1, S2, and S4, user data (A), (B), and (C) are recorded, and in the sector S3, the data portion is judged to be defective by the readberry high check, and the data feed portion is worn. The king signal 22 is a sector overlaid and overwritten, and the sector S5 is a sector in which the leading error of the sector ID portion has occurred and the marking signal 22 is recorded in the unrecorded data feed, and the sector S6 is an unrecorded sector. to be. The marking signal 22 is a repetitive recording of a pulse string longer than the recording bits of data, as described in US application No. 673,620 (October 21, 1984 M. Ichnose "Optical Information Recording and Reproducing Apparatus"). Defective sectors are indicated, and this signal can be easily detected with high accuracy by envelope detection.

The controller A (2) has a data recording sector display code for sectors S1, S2 and S4, a marking sector display code for sectors S3 and S5, and an unrecorded sector display code for sectors S6. Are generated as sector data identification information, respectively.

The controller B 6 interprets the sector data identification information and records the second optical disc in a form in which the fourth (a) diagram and the sector correspond one-to-one as shown in FIG. 4 (b). Since the sector S3 records only the marking signal 22 without recording the data feed signal 21, the sector S3 is different from the sector S3 in FIG. 4A, and similarly to the sector S5, the unrecorded data feed part. The marking signal 22 is recorded in the form. In the unrecorded sector, in cutting a master disc for making a duplicate disc, a laser beam of constant intensity is irradiated to form a guide groove in the optical disc. In a petiofoam optical disc in which a sector ID signal is recorded in advance, an unrecorded sector is skipped without recording a signal in the data feed part.

5 is a configuration diagram of the data feed signal 21 of the data feed part of the optical disc according to another embodiment of the present invention. In FIG. 5, reference numeral 23 denotes a synchronization pattern 24 for clock reproducing, user data 25 denotes data identification information, and 26 denotes user data 24 and data identification information 25. Error correction detection code.

FIG. 6 shows an example of sectors recorded on the optical disc by the embodiment of FIG. FIG. 6 (a) is a sector recorded by the user as in FIG. 4 (a), and FIG. 6 (b) shows a sector of an optical disk copied using the data feed signal of FIG. In the figure, the content of the data identification information 25 at that time is an example.

In FIG. 6, the user data (A) (B) (C) is recorded in the sectors S1, S2, and S4, and the sector S3 is determined to be defective by Readly High Check. The marking signal 22 is superimposed and recorded in the data feed signal 21, and in the sector S5, a lead error of the sector ID portion is generated and the marking signal 22 is recorded in the unrecorded data feed portion. A sector, and sector S5 is an unrecorded sector in which no signal is recorded.

The controller A (2) is marked with a marking sector display code for marking the data recording sector display code for the sectors S1, S2, and S4 as the data feed signal 21 for the sector S3. ), A marking sector display code (b) indicating marking to the unrecorded sector for the sector S5, and an unrecorded sector display code for the sector S6 are respectively generated as sector data identification information.

The controller B 6 interprets the sector data identification information and records the second optical disc in a manner in which the sixth (a) diagram and the sector correspond one-to-one as shown in FIG. 6 (b). The sectors S1 (S2) and S4 set the user data read out from the sectors S1 (S2) and S4 from the data recording sector display symbols in the user data 24 of the data feed signal 21, respectively. In addition, " OO " indicating that user data is recorded as data identification information is recorded. The sector S3 sets dummy data such as random numbers from the marking sector display code 1 into the user data 24 of the data feed signal 21, and stores the data as the data identification information 25. As shown in FIG. Add and record "EO" indicating that the mic signal has been mined.

In the sector S5, since the data feed signal 21 is not recorded from the marking sector display code, dummy data such as random numbers is set in the user data 24 of the data feed signal 21, similarly to the sector S3. Then, as data identification information 25, " EF " indicating that marking to unrecorded sectors is added and recorded.

The unrecorded sector S6 is also set to the user data 24 of the data feed signal 21 so that the random manual dummy data is equal to the sector S3 (S5) from the unrecorded sector display code, and the data identification information 25 In addition, " FF " indicating that an unrecorded sector is added is recorded.

In this manner, the optical disc of FIG. 6 (b) is duplicated so that the sector ID portion and the data feed portion are formed in the shape of pits of unevenness over the entire surface of the disc, so that the diffraction amount of the light from the track becomes uniform and thus a good tracking error signal Is detected, which enables stable track following and search over the entire optical disc.

As described above, according to the present embodiment, by adding sector data identification information to the data read from the optical disc 4, not only the sector in which the data of the optical disc is recorded, but also the defect of the sector ID signal and the readberry high check of the data. The disc recording unit records sector ID signals, data modulation signals, and marking signals corresponding to marking sectors marked with a bit error more than specified, and unrecorded sectors where no signals are recorded. It is possible to transmit in synchronization with the disk rotation in (7). In addition, according to the present embodiment, since data can be read directly from the optical disk and recorded in the disk copying apparatus, a large capacity magnetic disk drive is unnecessary, and the capacity of the optical disk that can be recorded with the capacity of the magnetic disk drive is limited. It is not said to receive.

In the above description, the memory 5, the controller B 6, the ID signal generator 8, and the disc recording unit 7 are replaced with the second optical disk drive and the controller, so that the sector is pre-formatted to the optical disk. It is also possible to copy one-to-one from sector to sector on the first optical disk.

As described above, according to the present invention, since the user can directly record the optical disc recorded by the user without using an expensive magnetic tape drive, the user owns the data to be reproduced as a reproduction-only optical disc. By simply recording to a drive and sending the recorded optical disc to the replica maker, it is possible to easily manufacture an optical disc for reproduction, and also its economic effect is large, such as no need for a magnetic tape drive or a large capacity magnetic disc.

Claims (4)

Sectors S1, S2, and S4 on which data is recorded, a sector identification part defective sector S5 in which a marking signal is recorded in an unrecorded data feed part, and a marking signal in a data signal of a data feed part. Is a second optical disc, which is a duplicate of the first optical disc 4 composed of the data feed part defect sector S3 overwritten and the unrecorded sector S6 in which no signal is recorded in the data feed part. The optical disk 2 records sectors S1 (S2) (S4) in which data is recorded, sectors (S3) (S5) in which marking signals have been recorded in the unrecorded data feed section, and signals in the data feed section. A duplicated disc, characterized in that it is duplicated in an unrecorded sector (S6). The sector S1 (S2) (S4) in which data is recorded, the sector identifier defect sector (S5) in which the marking signal is recorded in the unrecorded data feed section, and the marking signal are superimposed on the data signal in the data feed section. A second optical disc in which data is copied in correspondence with a sector corresponding to the first optical disc 4 made up of the data feed part defective sector S3 and an unrecorded sector S6 in which no signal is recorded in the data feed part. The sector includes a data feed part composed of data 24, data identification information 25, and an error correction detection code 26 generated for the data and the data identification information, and into the data identification information 25. A duplicated disc characterized by distinguishing data recording sectors, marking sectors or unrecorded sectors. 3. A duplicated disc as claimed in claim 2, wherein the first optical disc (4) is capable of data recording by a user. 3. A duplicated disc as claimed in claim 2, wherein said second optical disc is a reproduction-only optical disc recorded in an uneven pit structure. Summary The present invention relates to a duplicated disc which reproduces data recorded on a first optical disc having a sector structure and duplicates it onto a second optical disc. The present invention relates to a duplicate disc using sector disc identification information using a disc duplication apparatus. Whether the corresponding sector of the optical disc is a sector in which data is normally recorded, a sector identifier part defective sector, a data feed part combining sector, or an unsigned sector is determined, and the signal of the recording means to the second optical disc is controlled. A duplicated disk for copying sectors from one optical disk to a second optical disk in one-time correspondence, in particular, a sector in which data is recorded, a sector in which a marking signal is recorded in an unrecorded data feed section, and a signal in a data field section. The present invention also provides a duplicated disk composed of unrecorded sectors in which data is not recorded. It is to provide a copy disc comprising information, an error correction code generated for the data and the data identification information, and a data recording sector, marking sector or unrecorded sector being distinguished by the data identification information. .