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    OPTICAL DISC RECORDING APPARATUS.
    2.
    发明专利
    OPTICAL DISC RECORDING APPARATUS. 未知

    公开(公告)号：MY107582A

    公开(公告)日：1996-04-30

    申请号：MYPI19911501

    申请日：1991-08-19

    Applicant: SONY CORP

    Inventor： HIDEKI NAGASHIMA ,  RYO ANDO ,  YASUAKI MAEDA

    IPC: G11B7/00 ,  G11B7/004 ,  G11B11/105 ,  G11B7/0045 ,  G11B7/013 ,  G11B7/09 ,  G11B19/04 ,  G11B20/00 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18 ,  G11B27/034 ,  G11B27/36 ,  H04N7/24

    Abstract: A RECORDING APPARATUS FOR RECORDING DIGITAL DATA ON AN OPTICAL DISC (2) COMPRISES A MEMORY MEANS (14) FOR STORING INPUT DIGITAL DATA COMPRESSED FROM A CONTINUOUS SIGNAL, A SIGNAL ENCODER (15) FOR ARRANGING DATA READ OUT FROM THE MEMORY (14) INTO A PLURALITY OF CLUSTERS AT AN INTERVAL OF A PREDETERMINED NUMBER OF SECTORS, ANNEXING TO EACH CLUSTER A CLUSTER - LINKING SECTOR AND INTERLEAVING THE DATA OF THE CLUSTER, A RECORDING DEVICE (3,4) FOR RECORDING THE ENCODED DIGITAL DATA ON THE DISC (2), AN ABNORMALITY DETECTION CIRCUIT (30) FOR DETECTING ABNORMALITIES IN THE RECORDING OPERATION, AND A CONTROLLER (7) FOR INHIBITING RECORDING UPON DETECTION OF AN ABNORMALITY FOR PERFORMING A READ - OUT CONTROL OF THE MEMORY (14) FOR READING A PREDETERMINED AMOUNT OF DATA ON A CLUSTER- BY - CLUSTER BASIS TO MAINTAIN A WRITABLE SPACE LARGER THAN A PREDETERMINED AMOUNT, AND FOR PERFORMING A RECORDING POSITION CONTROL FOR CONTINUOUSLY RECORDING THE DIGITAL DATA INTERMITTENTLY READ OUT CLUSTER BY CLUSTER FROM THE MEMORY MEANS (14). (FIGURE 1)

    OPTICAL RECORDING MEDIUM AND DISC CARTRIDGE
    5.
    发明专利
    OPTICAL RECORDING MEDIUM AND DISC CARTRIDGE 未知

    公开(公告)号：SG96554A1

    公开(公告)日：2003-06-16

    申请号：SG200003208

    申请日：2000-06-08

    Applicant: SONY CORP

    Inventor： NAOHIRO NETSU ,  YOSHITAKA AOKI ,  TETSU WATANABE ,  KAZUHIKO FUJIIE ,  YASUAKI MAEDA ,  TAKUYA KAERIYAMA

    IPC: G11B7/007 ,  G11B7/013 ,  G11B7/24 ,  G11B7/26 ,  G11B11/105 ,  G11B23/00 ,  G11B23/03

    Abstract: An optical recording medium is provided which has a substrate and a signal recording layer provided on the substrate and in which an information signal is recorded in the form of microscopic pits. A light beam is focused on the signal recording layer and some change of the light beam carried by a return light from the signal recording layer is detected to read the information signal recorded on the signal recording layer. The optical recording medium has a diameter of 65 mm or less and a thickness of 0.4 to 0.7 mm. An information signal recording area extends outwardly from a radial position of 12.5 mm or less from the center of the medium. The ratio in area between the information signal recording area and non-signal recording area is 3.4 or more. The storage capacity of this medium is 2 gigabytes or more. The optical recording medium has formed at the center thereof a center hole around which an annular table-abutment convexing to one side of the medium is formed. A magnetic-clamping hub is installed in the center hole and thus the medium is magnetically clamped to a rotation driving mechanism of an optical recording and/or reproducing apparatus. The compactness and high density of recording of the optical recording medium will contribute greatly to a further compact structure of a recording and/or reproducing apparatus in which the medium is to be used.

    ERROR CORRECTION ENCODING APPARATUS.
    7.
    发明专利
    ERROR CORRECTION ENCODING APPARATUS. 未知

    公开(公告)号：MY107649A

    公开(公告)日：1996-05-30

    申请号：MYPI19911538

    申请日：1991-08-23

    Applicant: SONY CORP

    Inventor： KAZUHIKO FUJIIE ,  YASUAKI MAEDA

    IPC: G06F11/10 ,  G11B20/18 ,  G11B20/12 ,  H03M13/27

    Abstract: AN ERROR CORRECTION ENCODING APPARATUS (30), FOR USE FOR EXAMPLE IN AN OPTICAL DISC RECORDING AND/OR REPRODUCING APPARATUS, COMPRISES A FIRST DELAY CIRCUIT (32) THAT APPLIES DIFFERENT AMOUNTS OF DELAY TO RESPECTIVE DATA WORDS CONSTITUTING A DATA BLOCK TO CONVERT INPUT DATA IN A FIRST ARRAY STATE INTO A SECOND ARRAY STATE. A FIRST ERROR CORRECTION ENCODER (33) GENERATES FIRST CHECK WORDS FROM THE DATA IN THE SECOND ARRAY STATE. A SECOND DELAY CIRCUIT (34) APPLIES DIFFERENT AMOUNTS OF DELAY TO THE DATA IN THE SECOND ARRAY STATE AND TO THE FIRST CHECK WORDS TO PROVIDE DATA ABD CHECK WORDS IN A THIRD ARRAY STATE. A SECOND ERROR CORRECTION ENCODER (35) GENERATES SECOND CHECK WORDS FROM THE DATA AND CHECK WORDS IN THE THIRD ARRAY STATE. THE AMOUNTS OF DELAY APPLIED BY THE FIRST AND SECOND DELAY CIRCUITS (32, 34) ARE SUCH THAT THE ARRAY STATE OF THE DATA IN THE ARRAY STATE IS THE SAME AS THE ARRAY STATE OF THE DATA IN THE FIRST ARRAY STATE.

    DISC RECORDING/REPRODUCING APPARATUS.
    9.
    发明专利
    DISC RECORDING/REPRODUCING APPARATUS. 未知

    公开(公告)号：MY106883A

    公开(公告)日：1995-08-30

    申请号：MYPI19911140

    申请日：1991-06-25

    Applicant: SONY CORP

    Inventor： TADAO YOSHIDA ,  YUJI ARATAKI ,  YASUAKI MAEDA

    IPC: G11B7/09 ,  G11B7/013 ,  G11B20/10 ,  G11B19/04 ,  G11B20/22 ,  G11B27/00 ,  G11B27/30 ,  G11B27/32 ,  G11B27/34 ,  G11B27/36

    Abstract: DURING RECORDING INPUTTED DATA ARE SEQUENTIALLY WRITTEN INTO A MEMORY (14) AT ONE TRANSFER RATE AND ARE READ OUT AT A SECOND, HIGHER TRANSFER RATE FOR RECORDING ON A RECORD MEDIUM (2). THE READING OF THE MEMORY (14) IS SUCH THAT DATA IN A PRESENT FIRST AMOUNT ARE SUCCESSIVELY READ FROM THE MEMORY (14) TO ALWAYS ENSURE A WRITE SPACE IN THE MEMORY (14) WHICH HAS A CAPACITY WHICH IS HIGHER THAN A PREDETERMINED SECOND AMOUNT WHEN THE AMOUNT OF THE INPUTTED DATA STORED IN THE MEMORY (14) EXCEEDS THE FIRST AMOUNT. DURING PLAYBACK, THE RECORDED DATA ARE REPRODUCED AT A SECOND TRANSFER RATE, WHICH IS HIGHER THAN A FIRST TRANSFER RATE REQUIRED FOR OUTPUTTING THE REPRODUCED DATA, AND ARE WRITTEN IN A MEMORY (22). THE THUS WRITTEN DATA ARE SUCCESSIVELY READ OUT OF THE MEMORY (22) AS REPRODUCED OUTPUT DATA AT THE FIRST TRANSFER RATE. THE WRITTING OF THE REPRODUCED DATA TO THE MEMORY (22) IS CONTROLLED SO THAT A SECOND AMOUNT OF THE REPRODUCED DATA IS WRITTEN INTO THE MEMORY (22) AND AN AMOUNT OF REPRODUCED DATA, NOT LESS THAN A FIRST AMOUNT, IS ALWAYS STORED IN THE MEMORY (22) WHEN THE AMOUNT OF THE REPRODUCED DATA STORED IN THE MEMORY (22) BECOMES NOT HIGHER THAN THE FIRST GIVEN AMOUNT.(FIG.1)

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