Optical memory system for generating a timing control signal for
detecting a recorded region through a playback signal
    9.
    发明授权
    Optical memory system for generating a timing control signal for detecting a recorded region through a playback signal 失效
    光存储系统,用于产生用于通过重放信号检测记录区域的定时控制信号

    公开(公告)号:US5134607A

    公开(公告)日:1992-07-28

    申请号:US564799

    申请日:1990-08-09

    摘要: An optical memory device for recording, reproducing, or erasing information applies an optical beam such as a laser beam onto a recording medium. The optical memory device includes a recorded region detecting circuit for detecting information recorded region formed in the recording medium. In the optical memory device, a timing control for recording, reproducing, or erasing is performed with the use of a result obtained through detection of a synchronizing signal, such as a sector mark, indicative of a starting point of an information block and another result obtained through detection in the recorded region detecting circuit. The recorded region detecting circuit includes either at least one peak hold circuit for detecting a peak level of the playback signal or a low pass filter for smoothing the playback signal, and a comparator for comparing an output obtained through the peak hold circuit or through the low pass filter with a reference voltage.

    摘要翻译: 用于记录,再现或擦除信息的光学存储器件将诸如激光束的光束应用到记录介质上。 光学存储器件包括用于检测在记录介质中形成的信息记录区域的记录区域检测电路。 在光学存储器件中,通过使用通过检测指示信息块的起点的同步信号(例如扇区标记)和另一结果而获得的结果来执行用于记录,再现或擦除的定时控制 通过在记录区域检测电路中的检测获得。 记录区域检测电路包括用于检测重放信号的峰值电平的至少一个峰值保持电路或用于平滑重放信号的低通滤波器,以及比较器,用于比较通过峰值保持电路获得的输出或通过低电平 带有参考电压的滤波器。

    Optical memory device for recording, reproducing or erasing information
onto a recording medium, including a recorded region detecting circuit.
    10.
    发明授权
    Optical memory device for recording, reproducing or erasing information onto a recording medium, including a recorded region detecting circuit. 失效
    用于在包括记录区域检测电路的记录介质上记录,再现或擦除信息的光学存储装置。

    公开(公告)号:US4924447A

    公开(公告)日:1990-05-08

    申请号:US12087

    申请日:1987-02-06

    摘要: An optical memory device for recording, reproducing or erasing information by applying an optical beam such as a laser beam onto a recording medium in which the optical memory device includes a recorded region detecting circuit for detecting information recorded in a specified region formed in the recording medium. The optical memory device also includes a timing control for recording, reproducing or erasing data with the use of one result obtained through detection of a synchronizing signal such as a sector mark indicative of a starting point of an information block and another result obtained through detection in the recorded region detecting circuit. The recorded region detecting circuit contains either of at least one peak hold circuit for detecting a peak level of the playback signal and a low pass filter for smoothing the playback signal, and a comparator for comparing an output obtained through the peak hold circuit or through the low pass filter with a reference voltage.

    摘要翻译: 一种用于通过将诸如激光束的光束施加到记录介质上来记录,再现或擦除信息的光学存储器件,其中光学存储器件包括用于检测记录在记录介质中形成的指定区域中的信息的记录区域检测电路 。 光学存储装置还包括一个定时控制,用于通过使用通过检测同步信号获得的一个结果来记录,再现或擦除数据,所述同步信号例如是指示信息块起始点的扇区标记,以及通过检测获得的另一结果 记录区域检测电路。 记录区域检测电路包括用于检测重放信号的峰值电平的至少一个峰值保持电路和用于平滑重放信号的低通滤波器,以及用于比较通过峰值保持电路获得的输出或通过 具有参考电压的低通滤波器。