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41. 发明授权

US4361880A Programmable automatic record player 失效
标题翻译：可编程自动录音机
公开(公告)号：US4361880A
公开(公告)日：1982-11-30
申请号：US156775
申请日：1980-06-04
申请人： Masatsugu Kitamura , Hideo Onoye , Tsuyoshi Ono , Fumiaki Ohno , Yukihiro Kishima , Yutaka Morita
发明人： Masatsugu Kitamura , Hideo Onoye , Tsuyoshi Ono , Fumiaki Ohno , Yukihiro Kishima , Yutaka Morita
IPC分类号： G11B3/085 , G11B3/095 , G11B17/06
CPC分类号： G11B3/0957 , G11B3/08512
摘要： A pickup arm is equipped with a photo sensor assembly for detecting non-recorded portions on a disk. The sensor is located in such a position that horizontal distance between the stylus tip and the detecting point of the sensor measured in the direction of the radius of the turntable is substantially constant throughout the possible rotational angle of the arm. The rotational angle of the arm is measured and is modified by a given angle corresponding to the above mentioned distance. When this distance deviates from a standard value on replacement of the same with another, the variation may be readily corrected by manipulating a potentiometer. Prior to performing an automatic playback, the disk is scanned by the sensor and signals indicative of the arm angles corresponding to the non-recorded portions are stored. After scanning, the arm is controlled by comparing the actual angle of the arm with the prestored angles, to place the stylus on a right position on the disk to perform automatic playback in accordance with programmed information.
摘要翻译：拾取臂配备有用于检测盘上未记录部分的光传感器组件。传感器位于这样一个位置上，即在手臂半径的方向上测量的触针尖端和传感器的检测点之间的水平距离在臂的可能的旋转角度内基本上是恒定的。测量臂的旋转角度，并将其对应于上述距离的给定角度进行修改。当该距离在与另一个更换相同时偏离标准值时，可以通过操纵电位计来容易地校正变化。在执行自动重放之前，通过传感器扫描盘，并且存储指示对应于未记录部分的臂角度的信号。扫描后，通过将手臂的实际角度与预先存储的角度进行比较来控制手臂，以将触控笔放置在磁盘上的正确位置，以根据编程信息执行自动播放。

42. 发明授权

US4342110A Record disc playing apparatus with automatic cancellation of inside force on tone arm 失效
标题翻译：记录光盘播放装置，自动取消音色臂上的内力
公开(公告)号：US4342110A
公开(公告)日：1982-07-27
申请号：US165372
申请日：1980-07-02
申请人： Masatsugu Kitamura , Hideo Onoye , Fumiaki Ohno , Tsuyoshi Ono , Yukihiro Kishima , Yutaka Morita
发明人： Masatsugu Kitamura , Hideo Onoye , Fumiaki Ohno , Tsuyoshi Ono , Yukihiro Kishima , Yutaka Morita
IPC分类号： G11B3/28 , G11B3/085 , G11B3/095 , G11B3/12 , G11B17/06
CPC分类号： G11B3/0957 , G11B3/08512 , G11B3/127
摘要： A record disc playing apparatus comprises a horizontal drive motor for imparting a horizontal rotational force to a tone arm an address signal generating device for generating an address signal corresponding to a horizontal rotational angle position of the tone arm and a control device including a memory device for storing the magnitude of an inside force to be produced on the tone arm in correspondence with the horizontal rotational angle position of the tone arm. The address signal generating device supplies the generated address signal to the control device. The control device reads out the magnitude of the inside force from the memory device corresponding to the supplied address signal, produces a signal for cancelling the inside force at the rotational angle position of the tone arm corresponding to the read out magnitude of the inside force and supplies the same to the horizontal drive motor.
摘要翻译：记录盘播放装置包括：水平驱动电动机，用于向音调臂施加水平旋转力;地址信号发生装置，用于产生对应于音调臂的水平旋转角度位置的地址信号;以及控制装置，包括：存储装置，与音调臂的水平旋转角位置对应地存储要产生的音调臂上的内力的大小。地址信号发生装置将产生的地址信号提供给控制装置。控制装置根据所提供的地址信号读出来自存储装置的内力的大小，产生用于消除对应于内力的读出量的音调臂的旋转角度位置处的内力的信号，提供相同的水平驱动电机。

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