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    • 3. 发明申请
    • APPARATUS FOR RECORDING AND REPRODUCING OPTICAL DATA
    • 记录和再现光学数据的装置
    • WO1984003987A1
    • 1984-10-11
    • PCT/JP1984000156
    • 1984-03-30
    • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.KUROKI, YuzuruSATOH, IsaoICHINOSE, MakotoSUGIMURA, Tatuo
    • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    • G11B07/00
    • G11B20/1217G11B7/00745G11B20/1426G11B20/18
    • An optical data recording and reproducing apparatus which records and reproduces data in sector units with respect to an optical recording disc provided with an optically detectable guide track that is divided into a plurality of regions to provide a sector structure. A recording signal for each sector is constituted by a group of a plurality of data record units (frames), and each frame is constituted by data (11) and a data mark (10) identifying the head of the data, to reduce any erroneous propagation of demodulated data supplied into a memory due to, for example, a dropout in the optical recording disc during the reproduction of a sector. A frame number (22) is added to each frame and recorded. During reproduction, demodulated data is supplied to a memory address in the memory corresponding to the readout frame number, to prevent erroneous supply of demodulated data when a data mark is missing.
    • 一种光学数据记录和再现装置,其以相对于具有光学可检测的导轨的光学记录盘的扇区单元记录和再现数据,该光学记录盘被划分为多个区域以提供扇区结构。 每个扇区的记录信号由多个数据记录单元(帧)的组构成,并且每个帧由数据(11)和标识数据头的数据标记(10)构成,以减少任何错误 由于例如在扇区再现期间的光记录盘中的压差,提供给存储器的解调数据的传播。 将帧号(22)添加到每个帧并被记录。 在再现期间,解调的数据被提供给与读出帧号对应的存储器中的存储器地址,以防止当数据标记丢失时错误地提供解调数据。