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48 条记录 (耗时 0.034 秒)

    Focusing controller for focus jump control between recording layers of multilayer disk
    8.
    发明授权
    Focusing controller for focus jump control between recording layers of multilayer disk 失效
    聚焦控制器用于多层盘记录层之间的焦点跳转控制

    公开(公告)号：US06777657B2

    公开(公告)日：2004-08-17

    申请号：US10114027

    申请日：2002-04-03

    申请人： Yoshimichi Nishio ,  Yoshihiro Hashizuka ,  Kazunori Matsuo ,  Takeshi Sato ,  Morio Nozaki ,  Hitoshi Yamazaki ,  Kazuhiko Oogami ,  Yoshitaka Makino ,  Hideaki Yoshimura

    发明人： Yoshimichi Nishio ,  Yoshihiro Hashizuka ,  Kazunori Matsuo ,  Takeshi Sato ,  Morio Nozaki ,  Hitoshi Yamazaki ,  Kazuhiko Oogami ,  Yoshitaka Makino ,  Hideaki Yoshimura

    IPC分类号： G11B709

    CPC分类号： G11B7/08511 ,  G11B7/08529 ,  G11B2007/0013

    摘要： A focusing controller executes an appropriate focus jump even in a multilayer disk having layers of characteristics greatly different from each other. The focusing controller has an optical pickup including an objective lens for converging the light beam and a detector for receiving reflected light from the multilayer recording medium; an error signal generator for generating a focus error signal of the irradiated light beam from a detecting signal of the detector; an actuator for operating the objective lens; and a controller for controlling a focusing position of the light beam by operating the actuator based on the focus error signal. The controller calculates intensities of the reflected lights of two layers based on the detecting signal of the detector, and thus controls the timings of acceleration and deceleration signals of a focus jump between these two layers.

    摘要翻译： 即使在具有彼此极大不同的特征层的多层盘中，聚焦控制器执行适当的聚焦跳跃。 聚焦控制器具有包括用于会聚光束的物镜的光学拾取器和用于接收来自多层记录介质的反射光的检测器; 误差信号发生器，用于根据检测器的检测信号产生照射光束的聚焦误差信号; 用于操作物镜的致动器; 以及控制器，用于通过基于聚焦误差信号操作致动器来控制光束的聚焦位置。 控制器基于检测器的检测信号计算两层反射光的强度，从而控制这两层之间的聚焦跳跃的加速和减速信号的定时。

    Information reproducing apparatus and method, and error correction system
    9.
    发明授权
    Information reproducing apparatus and method, and error correction system 失效
    信息再现装置和方法以及纠错系统

    公开(公告)号：US07106679B2

    公开(公告)日：2006-09-12

    申请号：US10632114

    申请日：2003-08-01

    申请人： Takashi Sasaki ,  Masao Yoshida ,  Kazunori Matsuo ,  Shinichi Naohara ,  Yasuhisa Okamoto

    发明人： Takashi Sasaki ,  Masao Yoshida ,  Kazunori Matsuo ,  Shinichi Naohara ,  Yasuhisa Okamoto

    IPC分类号： G11B7/00

    CPC分类号： G11B20/1833 ,  G11B20/10009 ,  G11B20/10046 ,  G11B20/10194 ,  G11B20/10481 ,  G11B20/10527 ,  G11B20/18 ,  G11B20/1803 ,  G11B2020/10537 ,  G11B2020/1062 ,  G11B2020/10814 ,  G11B2020/1099 ,  G11B2020/183

    摘要： An information reproducing apparatus improved is provided with: an optical pickup (11) for reading record information recorded on an optical disc (100) and outputting a read signal; an error correction circuit (15) for executing an error correction process with respect to the outputted read signal and outputting output data through the error correction process corresponding to the record information; and a buffering memory device (17) for buffering the outputted output data. The apparatus is further provided with a microcomputer (20) for altering the error correction process in the error correction circuit depending on a memory status of the buffering memory device, if in the error correcting device, an error is detected in the read signal or an error ratio of the error becomes greater than a predetermined threshold value.

    摘要翻译： 改进的信息再现装置设置有：用于读取记录在光盘（100）上并记录读取信号的记录信息的光学拾取器（11） 纠错电路（15），用于对所输出的读取信号执行纠错处理，并通过与记录信息对应的纠错处理输出输出数据; 以及用于缓冲输出的输出数据的缓冲存储器件（17）。 该装置还具有微型计算机（20），用于根据缓冲存储装置的存储状态改变纠错电路中的纠错处理，如果在纠错装置中在读信号中检测到错误或 误差的误差比变得大于预定的阈值。

    Error correction method, apparatus and program product
    10.
    发明授权
    Error correction method, apparatus and program product 失效
    纠错方法，装置和程序产品

    公开(公告)号：US07146555B2

    公开(公告)日：2006-12-05

    申请号：US10724622

    申请日：2003-12-02

    申请人： Takashi Sasaki ,  Masao Yoshida ,  Kazunori Matsuo ,  Shinichi Naohara ,  Yasuhisa Okamoto

    发明人： Takashi Sasaki ,  Masao Yoshida ,  Kazunori Matsuo ,  Shinichi Naohara ,  Yasuhisa Okamoto

    IPC分类号： H03M13/00 ,  G06F11/00

    CPC分类号： H03M13/6511 ,  G11B20/1833 ,  H03M13/353

    摘要： An error correction apparatus includes: an error correction circuit 6 for performing a data error correction based on a first error correction algorithm selected from among a plurality of error correction algorithms having different correction strengths; an error determination unit 8a for using the first error correction algorithm to detect that the data error correction has been disabled; and a computer 8 for selecting a second error correction algorithm from the plurality of error correction algorithms, and for controlling the error correction circuit 6 to use the second error correction algorithm to perform the error correction for data for which it has been determined that the first error correction algorithm is not capable of correcting errors in the data.

    摘要翻译： 纠错装置包括：纠错电路6，用于基于从具有不同校正强度的多个纠错算法中选择的第一纠错算法执行数据纠错; 用于使用第一纠错算法来检测数据错误校正已被禁用的错误确定单元8a; 以及用于从多个纠错算法中选择第二纠错算法的计算机8，并且用于控制纠错电路6使用第二纠错算法对已经确定第一纠错算法的数据执行错误校正 纠错算法不能纠正数据中的错误。