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136 条记录 (耗时 0.028 秒)

    Erroneous track jump restoration apparatus for optical record disc player
    1.
    发明授权
    Erroneous track jump restoration apparatus for optical record disc player 失效
    光学记录光盘播放器的错误轨道跳转恢复装置

    公开(公告)号：US4860272A

    公开(公告)日：1989-08-22

    申请号：US99384

    申请日：1987-09-21

    申请人： Meisei Nishikawa ,  Jun Inagawa ,  Takeshi Inagaki ,  Toshihiko Kaneshige ,  Yasuhiro Hayashi ,  Tadashi Kojima

    发明人： Meisei Nishikawa ,  Jun Inagawa ,  Takeshi Inagaki ,  Toshihiko Kaneshige ,  Yasuhiro Hayashi ,  Tadashi Kojima

    IPC分类号： G11B7/005 ,  G11B7/09 ,  G11B19/04 ,  G11B20/10 ,  G11B20/18

    CPC分类号： G11B20/10527 ,  G11B19/04 ,  G11B20/1809 ,  G11B7/005 ,  G11B7/0946 ,  G11B2020/10759

    摘要： An apparatus for reproducing data stored on a disc in a plurality of tracks connected in a continuous spiral or separated in concentric tracks. The apparatus includes a device for rotating the disc, an optical pickup device aligned with one of the tracks for reading the data from the track, the pickup being subject to jump movement of alignment with the track into alignment with another track in response to movement of the device, a buffer memory device temporarily storing successive portions of the data read from the track for delaying reproduction of the data for a predetermined time after the reading of the data, a track jump detection device for detecting movement of the pickup device into alignment with anothr track and interrupting temporary storage of the data read from the other track by the buffer memory device, a drive device for moving the pickup device with respect to the disc for reading data, and for changing the alignment of the pickup device from the other track to the one track in response to the track jump detection device, and an output device for substantially uninterrupted reproduction of the temporarily stored data.

    摘要翻译： 一种用于再现以连续螺旋连接或以同心轨道分离的多个轨道中存储在盘上的数据的装置。 该设备包括用于旋转盘的装置，与轨道之一对准的光学拾取装置，用于从轨道读取数据，拾取器经受与轨道对准的跳跃运动，以响应于另一轨迹的移动而对准 所述装置，缓冲存储装置临时存储从所述轨道读取的数据的连续部分，用于在所述数据读取之后的预定时间内延迟所述数据的再现;轨迹跳跃检测装置，用于检测所述拾取装置的移动与 无条件跟踪和中断由缓冲存储器装置从另一轨道读取的数据的暂时存储，用于相对于盘读取数据移动拾取装置的驱动装置，以及用于改变拾取装置与另一轨道的对准 响应于轨道跳跃检测装置到一个轨道，以及用于暂时地基本上不间断再现的输出装置 重载数据。

    Disc data reproducing apparatus and signal processing circuit
    4.
    发明授权
    Disc data reproducing apparatus and signal processing circuit 失效
    光盘数据再现装置和信号处理电路

    公开(公告)号：US5815476A

    公开(公告)日：1998-09-29

    申请号：US957921

    申请日：1997-10-27

    申请人： Jun Inagawa ,  Yasuhiro Hayashi ,  Makoto Kubo

    发明人： Jun Inagawa ,  Yasuhiro Hayashi ,  Makoto Kubo

    IPC分类号： G11B7/0037 ,  G11B19/00 ,  G11B19/12 ,  G11B20/10

    CPC分类号： G11B19/00 ,  G11B19/12 ,  G11B20/10 ,  G11B20/10527 ,  G11B7/0037

    摘要： An apparatus and a signal processing circuit for reproducing data stored on a disc to prevent a buffer memory from experiencing overflow/underflow, and/or to reduce power consumption in a digital-to-analog converter. When the data to be read is ROM data, reading from the buffer memory is conducted in response to a varying frame clock signal, and the frequency of a reference clock signal to the digital-to-analog converter is reduced.

    摘要翻译： 一种用于再现存储在盘上的数据以防止缓冲存储器经历溢出/下溢的装置和信号处理电路，和/或降低数模转换器中的功耗。 当要读取的数据是ROM数据时，响应于变化的帧时钟信号进行从缓冲存储器的读取，并且降低到数模转换器的参考时钟信号的频率。

    Tracking control system for optical record disc information reproducing apparatus
    10.
    发明授权
    Tracking control system for optical record disc information reproducing apparatus 失效
    用于光记录盘信息再现装置的跟踪控制系统

    公开(公告)号：US4689779A

    公开(公告)日：1987-08-25

    申请号：US810254

    申请日：1985-12-18

    申请人： Yasuhiro Hayashi ,  Satoru Maeda ,  Tadashi Kojima

    发明人： Yasuhiro Hayashi ,  Satoru Maeda ,  Tadashi Kojima

    IPC分类号： G11B7/09 ,  G11B21/10 ,  G11B7/095

    CPC分类号： G11B7/0948 ,  G11B21/106

    摘要： A tracking control system for an optical disc information reproducing apparatus in which information stored in an optical disc as a series of recesses or pits arranged in concentric tracks or in a single spiral track is read out during rotation of the optical-disc by a scanning spot of a light beam, the system comprising a light source for generating the light beam used for scanning the track, means for applying the scanning spot of the light beam to a selected track location, a transducer for converting an optical signal detected by the scanning spot into an electric signal bearing a tracking error information, means for controlling the scanning spot applying means in response to the tracking error information signal, thereby causing the scanning spot to scan the selected track location accurately, means for transferring the tracking error information signal to the controlling means, a transfer characteristics of the transferring means being variable, means for limiting a slew rate of the tracking error information signal, means for subtracting an output of the slew rate limiting means from the tracking error information signal, and means for lowering the transfer characteristics of the controlling means in response to an output of the subtracting means, thereby causing the controlling means being irresponsive to the tracking error information signal.

    摘要翻译： 一种用于光盘信息再现装置的跟踪控制系统，其中在光盘由扫描点旋转期间读出存储在光盘中的信息作为排列在同心轨道或单个螺旋轨迹中的一系列凹部或凹坑 所述系统包括用于产生用于扫描轨道的光束的光源，用于将光束的扫描点施加到所选轨道位置的装置，用于转换由扫描点检测的光信号的换能器 成为具有跟踪误差信息的电信号，用于响应于跟踪误差信息信号控制扫描点施加装置的装置，从而使扫描点精确地扫描所选择的轨道位置，用于将跟踪误差信息信号传送到 控制装置，传送装置的传送特性可变，用于限制转换速率的装置 跟踪误差信息信号，用于从跟踪误差信息信号中减去转换速率限制装置的输出的装置，以及用于响应于减法装置的输出降低控制装置的传送特性的装置，从而使控制装置 对跟踪误差信息信号不负责任。