公开(公告)号：DE60124035D1

公开(公告)日：2006-12-07

申请号：DE60124035

申请日：2001-07-19

Applicant: SONY CORP

Inventor： KAWASHIMA TETSUJI ,  SHISHIDO YUKIO

IPC: G11B19/12 ,  G11B19/20 ,  G11B19/26 ,  G11B19/28

Abstract: The amount of light reflected from a disk is detected, and it is determined according to the amount of reflected light whether the disk is a recordable disk or a rewritable disk. The disk is controlled according to the result of determination such that it is rotated at a constant angular velocity (CAV) or at a constant linear velocity (CLV) and recording is executed. Further, rotation driving control of the disk is selected according to factors other than the type of the disk, such as according to whether random recording is allowed or not, according to a recording state in the disk, according to whether an alternative area is provided or not, according to a recording start position, or according to whether initialization is required or not. CLV control or CAV control is appropriately selected for a disk at recording to suppress a reduction in accessibility and a reduction in data transmission rate.

公开(公告)号：MY126056A

公开(公告)日：2006-09-29

申请号：MYPI20004499

申请日：2000-09-27

Applicant: SONY CORP

Inventor： KAWASHIMA TETSUJI ,  TOYAMA KATSUMI ,  SAKO YOICHIRO ,  INOKUCHI TATSUYA ,  TSUKATANI SHIGEKI ,  SHISHIDO YUKIO

IPC: G11B3/90 ,  G11B20/12 ,  G11B7/004 ,  G11B7/007 ,  G11B7/09 ,  G11B7/30 ,  G11B27/10 ,  G11B27/19 ,  G11B27/24 ,  G11B27/30

Abstract: A DATA RECORDING MEDIUM (1) HAVING AN ADDRESS-REPRESENTING PORTION FORMED OF A PREDETERMINED NUMBER OF BITS FOR REPRESENTING TIME INFORMATION COMPOSED OF MINUTES, SECONDS, AND FRAMES IN A BINARY CODED DECIMAL NOTATION,WHEREIN ADDRESSES REPRESENTED IN A BINARY NOTATION INSTEAD OF THE BINARY CODED DECIMAL NOTATION ARE PLACED IN THE ADDRESS- REPRESENTING PORTION.

公开(公告)号：CA2163556C

公开(公告)日：2006-07-11

申请号：CA2163556

申请日：1995-04-21

Applicant: SONY CORP

Inventor： KAWASHIMA TETSUJI ,  INOKUCHI TATSUYA

IPC: H04B1/66 ,  G11B20/10 ,  H03M7/30 ,  H03M7/48

Abstract: A difference/compression ratio calculating means 76 in a data processing means 71 of a data transmitting apparatus according to the present invention calculates an actual difference and an actual compression ratio based on the data length of pre-compression data received from a data source 2 through pre-compression data receiving means 74 and the data length of compressed data outputted from a data compression circuit 67. If the actual difference is equal to or greater than a preset difference a and the actual compression ratio is equal to and greater than a preset compression ratio .beta., then the compressed data is transmitted to a data destination 3 through a transfer request data output means 79. Otherwise, the pre-compression data is transmitted to the data destination 3. With this arrangement, it is possible to prevent a phenomenon in which the size of compressed data which occupies a storage area in the data destination 3 is substantially the same as the size of uncompressed data which occupies the storage area, and also to avoid wasteful data expansion in the data destination 3.

公开(公告)号：AU777327B2

公开(公告)日：2004-10-14

申请号：AU6138000

申请日：2000-09-28

Applicant: SONY CORP

Inventor： SHISHIDO YUKIO ,  KAWASHIMA TETSUJI ,  SAKO YOICHIRO ,  INOKUCHI TATSUYA ,  TOYAMA KATSUMI ,  TSUKATANI SHIGEKI

IPC: G11B27/32 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/007 ,  G11B19/02 ,  G11B19/06 ,  G11B19/12 ,  G11B20/10 ,  G11B20/12 ,  G11B27/034 ,  G11B27/19 ,  G11B27/24 ,  G11B27/30 ,  G11B27/34 ,  G11B27/28

Abstract: An absolute time area is expanded by using an area of relatively low importance such as zero-data area and/or relative time area or the like in a Q channel in a sub-code in a recording format of a CD. Thus, an absolute time expression which can cope with a disc having a large capacity or the like can be performed. An absolute time expression is performed in a manner such that a digit of "100 minutes" is BCD expressed by using lower 4 bits in the 8-bit zero-data area ZERO. Thus, the absolute time of up to 999min59sec74frame can be expressed. A digit of "hour" is also expressed by using lower 4 bits in the zero-data area. For example, identification information showing that a disc is a high density optical disc of a large capacity is expressed by using upper 4 bits in the zero-data area ZERO.

公开(公告)号：AU776509B2

公开(公告)日：2004-09-09

申请号：AU6138100

申请日：2000-09-28

Applicant: SONY CORP

Inventor： SAKO YOICHIRO ,  KAWASHIMA TETSUJI ,  SHISHIDO YUKIO ,  TSUKATANI SHIGEKI ,  TOYAMA KATSUMI ,  INOKUCHI TATSUYA

IPC: G11B27/32 ,  G11B20/12 ,  G11B27/10 ,  G11B27/30 ,  G11B27/28

Abstract: A data record medium on which a digital signal has been recorded is disclosed, the digital signal being composed of main data and a sub code, the sub code having time information representing reproduction elapsed time, the sub code being recorded in association with the main data, wherein information that represents the reproduction elapsed time of the sub code is represented with a binary coded decimal number and address information in synchronization with the time information of the main data is represented with a binary number, the address information being contained in the main data.

公开(公告)号：DE69729042D1

公开(公告)日：2004-06-17

申请号：DE69729042

申请日：1997-10-08

Applicant: SONY CORP

Inventor： NAKAGAWA TOSHIYUKI ,  INO HIROYUKI ,  YOSHIMURA SHUNJI ,  KAI SHINICHI ,  SHIMPUKU YOSHIHIDE ,  IIDA MICHIHIKO ,  KAWASHIMA TETSUJI ,  SATO SHOJI

IPC: G11B20/10 ,  G11B20/14 ,  H03M7/00 ,  H03M7/14 ,  H04L25/49

Abstract: If there is any portion in channel bit data obtained on converting a signal read out from a recording medium into a bilevel signal which fails to satisfy a condition concerning a minimum run length or a maximum run length of the same symbol, the channel bit data is corrected to improve the bit error rate to secure a skew margin. To this end, channel bit data not satisfying a minimum run length d' of the same symbol is detected by a (d'-1) detector 4 using n-tupled clocks obtained on n-tupling channel clocks of playback data by a bit clock generator 2, where n is an integer not less than 2. A correction position of the channel bit data having the run length of the same symbol equal to (d'-1) is designated by a correction bit position designating unit 5. A data correction unit 6 then corrects the channel bit data so that the minimum run length of the same symbol will be equal to d'.

公开(公告)号：ID28596A

公开(公告)日：2001-06-14

申请号：ID20001057

申请日：2000-12-07

Applicant: SONY CORP

Inventor： SHISHIDO YUKIO ,  KAWASHIMA TETSUJI

IPC: G11B19/12 ,  G11B7/004 ,  G11B7/007 ,  G11B27/19 ,  G11B27/24 ,  G11B27/30

Abstract: The present invention facilitates identification of whether or not an optical disc is a optical disc of which recording capacity is enlarged. A synchronization pattern of ATIP information embedded into guide grooves irradiated with a light spot is made to be different between a high density optical disc and a standard density optical disc of which recording capacity is not enlarged. Specifically, while the synchronization pattern of the standard density optical disc is preferably made into "3T+1T+1T+3T" (where "T" represents a minimum channel bit of a signal obtained by reading a positional information), the synchronization pattern of the high density optical disc is preferably made into "3T+3T+1T+1T" for example. By reading the ATIP information and recognizing the synchronization pattern thereof, it can be easily and quickly identified whether the optical disc has a standard density or a high density.

公开(公告)号：AU7215300A

公开(公告)日：2001-06-14

申请号：AU7215300

申请日：2000-12-11

Applicant: SONY CORP

Inventor： SHISHIDO YUKIO ,  KAWASHIMA TETSUJI

IPC: G11B19/12 ,  G11B7/004 ,  G11B7/007 ,  G11B27/19 ,  G11B27/24 ,  G11B27/30

Abstract: The present invention facilitates identification of whether or not an optical disc is a optical disc of which recording capacity is enlarged. A synchronization pattern of ATIP information embedded into guide grooves irradiated with a light spot is made to be different between a high density optical disc and a standard density optical disc of which recording capacity is not enlarged. Specifically, while the synchronization pattern of the standard density optical disc is preferably made into "3T+1T+1T+3T" (where "T" represents a minimum channel bit of a signal obtained by reading a positional information), the synchronization pattern of the high density optical disc is preferably made into "3T+3T+1T+1T" for example. By reading the ATIP information and recognizing the synchronization pattern thereof, it can be easily and quickly identified whether the optical disc has a standard density or a high density.

公开(公告)号：NO20006248L

公开(公告)日：2001-06-11

申请号：NO20006248

申请日：2000-12-08

Applicant: SONY CORP

Inventor： SHISHIDO YUKIO ,  KAWASHIMA TETSUJI

IPC: G11B19/12 ,  G11B27/19 ,  G11B7/004 ,  G11B7/007 ,  G11B27/24 ,  G11B27/30 ,  G11B27/10

Abstract: The present invention facilitates identification of whether or not an optical disc is a optical disc of which recording capacity is enlarged. A synchronization pattern of ATIP information embedded into guide grooves irradiated with a light spot is made to be different between a high density optical disc and a standard density optical disc of which recording capacity is not enlarged. Specifically, while the synchronization pattern of the standard density optical disc is preferably made into "3T+1T+1T+3T" (where "T" represents a minimum channel bit of a signal obtained by reading a positional information), the synchronization pattern of the high density optical disc is preferably made into "3T+3T+1T+1T" for example. By reading the ATIP information and recognizing the synchronization pattern thereof, it can be easily and quickly identified whether the optical disc has a standard density or a high density.

公开(公告)号：DE69329926D1

公开(公告)日：2001-03-15

申请号：DE69329926

申请日：1993-04-27

Applicant: SONY CORP

Inventor： KAWASHIMA TETSUJI ,  WATANABE TETSU

IPC: G11B7/085 ,  G11B11/105 ,  G11B19/14 ,  G11B11/10 ,  G11B21/08