2.
    发明专利
    未知

    公开(公告)号:DE69634017T2

    公开(公告)日:2005-11-03

    申请号:DE69634017

    申请日:1996-08-16

    Applicant: SONY CORP

    Abstract: A signal recording/reproducing method and apparatus, a signal record medium, and a signal transmission/reception method and apparatus enable a signal recorded on a signal record medium to be identified as being an original signal or a copied signal. A CPU (11) generates, at a pre-set time interval, an identification signal having a meaning at a pre-set time interval, and an identification signal addition circuit (3) adds the identification signal to video signals and/or audio signals. A sector forming circuit (5) and circuit components up to a recording/reproducing head (14) record the video signals and/or the audio signals and the ancillary identification signal on an optical disc (12).

    METHOD AND DEVICE FOR REPRODUCING DATA.
    7.
    发明公开
    METHOD AND DEVICE FOR REPRODUCING DATA. 失效
    方法和设备数据回放。

    公开(公告)号:EP0671738A4

    公开(公告)日:1996-08-07

    申请号:EP94927795

    申请日:1994-09-28

    Applicant: SONY CORP

    Abstract: Data are recorded on an optical disk (1) by adding double parities of internal and external parities to the data. The internal parity is added to interleaved data and used for the correction of internal codes, and the external parity is added to non-interleaved data and the internal parity and used for the correction of the external codes. Reproduced data from the disk (1) are supplied to and stored in a ring buffer memory (5) and, at the same time, supplied to an error correction circuit (71) which corrects the errors in the external codes. The correction results are supplied to the memory (5) and overwritten therein. The data stored in the memory (5) are again read out to the circuit (71) and the errors in the internal codes are corrected. For sector address detection by a sector detection circuit (72), the data of which the errors of the external codes are corrected are used. In special reproduction, only the external code correction is performed.

    10.
    发明专利
    未知

    公开(公告)号:DE69634017D1

    公开(公告)日:2005-01-13

    申请号:DE69634017

    申请日:1996-08-16

    Applicant: SONY CORP

    Abstract: A signal recording/reproducing method and apparatus, a signal record medium, and a signal transmission/reception method and apparatus enable a signal recorded on a signal record medium to be identified as being an original signal or a copied signal. A CPU (11) generates, at a pre-set time interval, an identification signal having a meaning at a pre-set time interval, and an identification signal addition circuit (3) adds the identification signal to video signals and/or audio signals. A sector forming circuit (5) and circuit components up to a recording/reproducing head (14) record the video signals and/or the audio signals and the ancillary identification signal on an optical disc (12).

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