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热词
    • 93. 发明公开
    • Automatic tracking apparatus
    • Automatische Spurnachlaufvorrichtung。
    • EP0177263A2
    • 1986-04-09
    • EP85306825.2
    • 1985-09-25
    • SONY CORPORATION
    • Sakamoto, Hitoshi c/o Sony CorporationOkafuji, Takayuki c/o Sony Corporation
    • G11B5/592
    • G11B5/5508G11B5/592
    • An automatic tracking apparatus for use in a video tape recorder including a magnetic head mounted on a piezo-electric element. The automatic tracking apparatus includes a driving pulse generator which generates a driving pulse signal causing the piezo-electric element to drive the magnetic head. The driving pulse signal has a waveform including a jumping portion causing the magnetic head to jump from one recording track to another recording track, which generates ringing vibrations in the piezo-electric element in a change-speed reproduction mode. An inflection point is imposed on the jumping portion of the driving pulse signal waveform. The position of the inflection point is determined in accordance with the amplitude level of the ringing vibrations so as to minimize the amplitude level of the ringing vibrations.
    • 一种用于录像机的自动跟踪装置,包括安装在压电元件上的磁头。 自动跟踪装置包括驱动脉冲发生器,其产生使压电元件驱动磁头的驱动脉冲信号。 驱动脉冲信号具有波形,其包括使磁头从一个记录轨迹跳到另一个记录轨道的集中部分,其在变速再现模式中产生压电元件中的振动振动。 对驱动脉冲信号波形的跳跃部分施加拐点。 拐点的位置根据振动振动的振幅水平来确定,以使振铃振动的振幅水平最小化。