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43 条记录 (耗时 0.04 秒)

    Signal decoding apparatus and method
    7.
    发明授权
    Signal decoding apparatus and method 失效
    信号解码装置及方法

    公开(公告)号：US5070492A

    公开(公告)日：1991-12-03

    申请号：US317197

    申请日：1989-02-28

    申请人： Masaharu Ogawa ,  Yoshiki Nakajima ,  Osamu Ito ,  Teruo Furukawa ,  Kyosuke Yoshimoto ,  Kunimaro Tanaka ,  Masafumi Ototake ,  Minoru Ozaki

    发明人： Masaharu Ogawa ,  Yoshiki Nakajima ,  Osamu Ito ,  Teruo Furukawa ,  Kyosuke Yoshimoto ,  Kunimaro Tanaka ,  Masafumi Ototake ,  Minoru Ozaki

    IPC分类号： G11B7/005 ,  G11B7/007 ,  G11B7/085 ,  G11B11/105 ,  G11B20/10 ,  G11B20/12 ,  G11B20/14 ,  G11B27/30

    CPC分类号： G11B20/10222 ,  G11B11/10565 ,  G11B20/10009 ,  G11B20/1217 ,  G11B20/1403 ,  G11B27/3027 ,  G11B7/005 ,  G11B7/00745 ,  G11B7/08505 ,  G11B7/08541 ,  G11B2220/20

    摘要： The present invention relates to apparatus and method for decoding a signal reproduced from an optical disc. The optical disc has a signal format for recording data from an original signal in a data area at the optical disc. The optical disc also has recorded thereon a clock signal having the same phase as the recorded data. During reproduction of the recorded signal from the optical disc, this clock signal is utilized to generate a delayed version of the reproduced data signal. This delayed signal is used to decode the reproduced data signal obtained from the optical disc, thereby enabling a phase shift of the reproduced clock signal to there produced data signal to be eliminated by circuit processing. During the recording on the data area of the optical disc, fixing data for setting phases of data reproducing recording clock and reproducing signal to optimum phases for decoding is recorded. A phase corrector is provided at the optical disc driving apparatus so as to delay the fixing data signal reproduced from the optical disc, whereby a phase shift between the reproduced data signal and the reproduced clock signal can be corrected to an optimum quantity and the data signal at a preformatted area of the optical disc can be reproduced without delay.

    摘要翻译： 本发明涉及对从光盘再现的信号进行解码的装置和方法。 光盘具有用于在光盘的数据区中记录来自原始信号的数据的信号格式。 光盘上也记录了与记录数据相同相位的时钟信号。 在从光盘再现记录的信号期间，该时钟信号用于产生再现数据信号的延迟版本。 该延迟信号用于对从光盘获得的再现数据信号进行解码，从而能够通过电路处理来消除再现的时钟信号到那里产生的数据信号。 在光盘的数据区域的记录期间，记录用于将数据再现记录时钟和再现信号的相位设置到用于解码的最佳相位的固定数据。 在光盘驱动装置上设置相位校正器，以延迟从光盘再现的固定数据信号，从而可以将再现的数据信号和再生的时钟信号之间的相移校正到最佳量，并且数据信号 可以无延迟地再现光盘的预格式化区域。

    Pit spacing in the servo field of an optical disk for speed and direction detection and data retrieval
    8.
    发明授权
    Pit spacing in the servo field of an optical disk for speed and direction detection and data retrieval 失效
    光盘伺服场中的坑间距用于速度和方向检测和数据检索

    公开(公告)号：US5321675A

    公开(公告)日：1994-06-14

    申请号：US318594

    申请日：1989-02-28

    申请人： Osamu Ito ,  Masaharu Ogawa ,  Kyosuke Yoshimoto ,  Kunimaro Tanaka ,  Teruo Furukawa ,  Masafumi Ototake

    发明人： Osamu Ito ,  Masaharu Ogawa ,  Kyosuke Yoshimoto ,  Kunimaro Tanaka ,  Teruo Furukawa ,  Masafumi Ototake

    IPC分类号： G11B7/007 ,  G11B7/085 ,  G11B7/09

    CPC分类号： G11B7/00745 ,  G11B7/08529 ,  G11B7/0938

    摘要： A sampled servo type optical disc and its driving apparatus is disclosed, in which by cyclically repeating wobbled pits or address pits of the optical disc composed by two significant digits at every N tracks, and preformatting by patterns spaced in different intervals at every track, when the optical disc driving apparatus seeks an object track, the seek direction of the optical head can be detected by the sequence of change of the pattern, and its seek speed can be detected at high speed by the detected result of the pattern, ensuring the speed control of the optical head in response to the detected seek direction and speed.

    摘要翻译： 公开了一种采样的伺服型光盘及其驱动装置，其中通过循环重复由每个N个磁道由两个有效数字组成的光盘的波形凹坑或地址坑，并且通过在每个轨道上以不同间隔隔开的图案预格式化， 光盘驱动装置寻找物体轨道，可以通过图案变化的顺序来检测光学头的寻道方向，并且可以通过检测到的图案的结果高速检测其寻道速度，确保速度 响应于检测到的寻道方向和速度来控制光头。