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    • 2. 发明授权
    • Disc recording/reproducing apparatus which uses stored eccentricity data
to maintain the read/write head at a constant radial position during a
stand-by mode
    • 使用存储的偏心数据的盘记录/再现装置在待机模式期间将读/写头保持在恒定的径向位置
    • US5617388A
    • 1997-04-01
    • US249395
    • 1994-05-26
    • Hideaki IshiokaYoshikazu OnukiToru Takeda
    • Hideaki IshiokaYoshikazu OnukiToru Takeda
    • G11B7/085G11B7/095G11B19/00G11B21/08
    • G11B21/085G11B19/00G11B7/08505G11B7/0953
    • A disc recording/reproducing apparatus includes a tracking servo system in which a recording/reproducing head is moved based upon a target position signal indicating its pre-set target position on a disc-shaped recording medium and in which the recording/reproducing head is controlled in its position by a driving unit which employs an output of a controller which is supplied with a position signal obtained by subtracting a deviation from a pre-set target position from the target position signal. The apparatus also includes an eccentricity data storage unit for storing eccentricity data indicating the tracking position of the recording/reproducing head which depends upon eccentricity of the disc-shaped recording medium. The eccentricity data from the eccentricity data storage unit is summed to the target position signal for controlling the position of the recording/reproducing head. In this manner, the current consumption when the recording/reproducing head is halted under a standby state on a pre-set track may be reduced.
    • 盘记录/再现装置包括一个跟踪伺服系统,其中记录/再现头基于在盘形记录介质上指示其预设目标位置的目标位置信号而移动,并且其中记录/再现头被控制 在其位置处,该驱动单元采用控制器的输出,控制器的输出被提供有通过从目标位置信号中减去与预设目标位置的偏差而获得的位置信号。 该装置还包括偏心数据存储单元,用于存储指示记录/再现头的跟踪位置的偏心数据,其依赖于盘形记录介质的偏心度。 来自偏心数据存储单元的偏心数据与用于控制记录/再现头的位置的目标位置信号相加。 以这种方式,可以减少在预设轨道上在备用状态下暂停记录/再现头的电流消耗。
    • 3. 发明授权
    • Head positioning apparatus and method therefor
    • 头定位装置及其方法
    • US06469861B2
    • 2002-10-22
    • US09225936
    • 1999-01-06
    • Yoshikazu OnukiHideaki Ishioka
    • Yoshikazu OnukiHideaki Ishioka
    • G11B5596
    • G11B5/59627
    • A head positioning control apparatus and method which compensates for positional deviation of a magnetic head with respect to the positioning of the head on a particular track of a disc recording medium via a tracking control. Additionally, during a seek mode of the apparatus, a head that was positioned as a result of the tracking control is moved to a neighboring track of the disc recording medium. The seek mode uses the information obtained during the tracking mode to correct any disturbance frequencies occurring in synchronism with the rotational frequency of the disc recording medium, even if the head travels over a large distance.
    • 一种磁头定位控制装置和方法,其通过跟踪控制来补偿磁头相对于磁盘记录介质的特定轨道上磁头定位的位置偏差。 另外,在设备的寻找模式期间,将作为跟踪控制的结果定位的头部移动到盘记录介质的相邻轨道。 搜索模式使用在跟踪模式期间获得的信息来校正与盘记录介质的旋转频率同步地出现的任何干扰频率,即使磁头行进了很大的距离。