公开(公告)号：JP2002056607A

公开(公告)日：2002-02-22

申请号：JP2000250659

申请日：2000-08-14

Applicant: SONY CORP

Inventor： SHISHIDO YUKIO

IPC: G11B20/10 ,  G11B20/12

Abstract: PROBLEM TO BE SOLVED: To manage copyright information in a sector unit. SOLUTION: When it is discriminated that a host computer 80 makes a recording request, copyright information corresponding to copyright protection, which discriminates whether or not a request to protect a copyright is made, is generated (S101 to S103). Data to be recorded on the host computer 80 are requested, the copyright information is superimposed on the received data (S104 to S106), an error detection code and an error correction code are generated and attached, and the data are recorded in the sector unit (S107 to S108).

公开(公告)号：JP2001344753A

公开(公告)日：2001-12-14

申请号：JP2000161169

申请日：2000-05-26

Applicant: SONY CORP

Inventor： SHISHIDO YUKIO

IPC: G11B7/0045

Abstract: PROBLEM TO BE SOLVED: To efficiently perform an OPC for an optical disk, which allows overwriting. SOLUTION: When an OPC is performed according to the passage of time, a temperature change or the like, the operation is carried out in an area corresponding to a next writable address(NWA), in which writing is started when next recording is performed.

公开(公告)号：JP2001297437A

公开(公告)日：2001-10-26

申请号：JP2000121082

申请日：2000-04-17

Applicant: SONY CORP

Inventor： MORIZUMI TOSHIO ,  HASEGAWA HIROYUKI ,  KUMAGAI EIJI ,  SHISHIDO YUKIO

IPC: G11B7/0045 ,  G11B7/125

Abstract: PROBLEM TO BE SOLVED: To conduct the recording operation in the optimum condition by coping with the change of ambient temperature at the time of recording. SOLUTION: When the recording operation is conducted on an optical disk 100, the temperature around an optical pickup 10 is detected by a temperature sensor 50. The recording strategy of laser beams emitted from a laser source 11 is controlled in the manner of controlling a laser driving part 30 by a control part 33 in accordance with the detected temperature.

公开(公告)号：JP2001291331A

公开(公告)日：2001-10-19

申请号：JP2000101352

申请日：2000-03-31

Applicant: SONY CORP

Inventor： KAWASHIMA TETSUJI ,  SHISHIDO YUKIO ,  TSUKADA HIROSHI

IPC: G11B20/12 ,  G11B7/007 ,  G11B20/18

Abstract: PROBLEM TO BE SOLVED: To make a capacity larger and efficiently recording and reproducing operation possible. SOLUTION: A PCA 11, PMA 12, lead-in area 13, plural logic tracks 14a, 14b and 14c and lead-out area are set as recording regions of CD-R. Pregaps 17 are set at the top positions of program regions 16 in the respective logic tracks 14. The pregaps 17 are formed at prescribed frame lengths without depending on the data structure of the other logic tracks.

公开(公告)号：JP2001101808A

公开(公告)日：2001-04-13

申请号：JP28018499

申请日：1999-09-30

Applicant: SONY CORP

Inventor： SHISHIDO YUKIO

IPC: G11B20/14 ,  G11B7/007 ,  G11B20/12

Abstract: PROBLEM TO BE SOLVED: To easily discriminate whether an optical disk is a disk whose recording capacity is made to be large or not. SOLUTION: At the time of recording a signal of a compact disk system on the optical disk, when the recording density of the optical disk is made to be high, a synchronous pattern in which two '11T' (T is the minimum channel bit interval) patterns of the case of a disk whose recording density is not made to be high are used is made to be a pattern in which a pattern different from the '11T' pattern and one '11T' pattern are used. Since the optical disk is made able to be is synchronization with the '11T' pattern and also another pattern is made to a pattern different from the '11T' pattern, this optical disk reproducing device can discriminate the optical disk whose recording density is made to be high.

公开(公告)号：JP2000207851A

公开(公告)日：2000-07-28

申请号：JP794499

申请日：1999-01-14

Applicant: SONY CORP

Inventor： SHISHIDO YUKIO ,  KAWASHIMA TETSUJI ,  MIYAKE KUNIHIKO

IPC: G11B20/18

Abstract: PROBLEM TO BE SOLVED: To improve the success rate of reading out data and increase the read-out speed by contriving the retry operation. SOLUTION: When all data forming one group cannot be buffered appropriately and the leading data of the group (e.g. start header) are buffered, this reproducing device performs first retry operation (buffering retry) which is not accompanied by access to a read-out position (F179), on the other hand, when the leading data of the group is not buffered, the device performs second retry operation (access retry) which is accompanied by access to a read-out position (F180).

公开(公告)号：JP2000113644A

公开(公告)日：2000-04-21

申请号：JP794699

申请日：1999-01-14

Applicant: SONY CORP

Inventor： SHISHIDO YUKIO

IPC: G11B20/12 ,  G11B27/00

Abstract: PROBLEM TO BE SOLVED: To obtain more accurate character information by checking validity of character information corresponding to header information and then improving detection capability through control of error detection of character information when the predetermined data content is detected by verifying various data contents corresponding to the header information indicating character information included in the management information read from a recording medium. SOLUTION: A reproducing apparatus 70 extracts text data from sub-code data of a disk 90. The sub-code data is sequentially stored in a cache memory 20 as a row data which is not deinterleaved and the detecting process to identify the position of the desired text data from the stored sub-code data is performed. Assuming that the necessary data cannot be obtained only with single read operation, the start header is detected with the detection process from the sub-code data of two text groups stored in the cache memory 20 and the row text data is extracted on the basis of the detected start header.