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    • 3. 发明授权
    • Drive device
    • 驱动装置
    • US4779032A
    • 1988-10-18
    • US33024
    • 1987-03-31
    • Yuji SakaegiNobuo Fukushima
    • Yuji SakaegiNobuo Fukushima
    • G11B19/28G11B19/20G11B21/02G11B21/08G11B31/00H02P5/46H04N5/77H04N5/781H04N9/793G05B19/40
    • G11B19/20G11B31/00H04N5/772H04N9/793
    • A recording apparatus having a recording head for recording video signals on a magnetic disc as the disc rotates, comprises a servo motor, a circuit for generating a feedback signal representing the rotating state of the servo motor, a head moving member for changing over the recording position of the recording head relative to the magnetic disc, and a control circuit for performing a first sequence of controlling the rotating state of the servo motor in response to the feedback signal and a second sequence of controlling the moving state of the head moving member time-dividedly in response to generation of the feedback signal, so that the apparatus is constructed without the necessity of using a standard timing generating source solely used for controlling the movement of the head.
    • 具有用于在盘旋转时将视频信号记录在磁盘上的记录头的记录装置包括伺服电动机,用于产生表示伺服电动机的旋转状态的反馈信号的电路,用于切换记录的磁头移动部件 记录头相对于磁盘的位置;以及控制电路,用于响应于反馈信号执行控制伺服电动机的旋转状态的第一序列,以及控制磁头移动构件时间的移动状态的第二序列 分别响应于反馈信号的产生,使得该装置被构造而不需要使用仅用于控制头的移动的标准定时发生源。