发明授权
- 专利标题: Turntable rotation control device
- 专利标题(中): 转盘旋转控制装置
-
申请号: US943835申请日: 1978-09-19
-
公开(公告)号: US4191382A公开(公告)日: 1980-03-04
- 发明人: Shizuo Inaba
- 申请人: Shizuo Inaba
- 申请人地址: JPX Tokyo
- 专利权人: Pioneer Electronic Corporation
- 当前专利权人: Pioneer Electronic Corporation
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX52-112937 19770920
- 主分类号: G11B19/02
- IPC分类号: G11B19/02 ; G11B3/085 ; G11B19/14 ; G11B17/06
摘要:
A turntable rotation control device has an electric motor reversibly rotatable. A mechanism is used for horizontally swinging a tone arm towards the inner circumference of a record by the rotation of the motor in a first direction. A second mechanism is employed for horizontally swinging the tone arm towards the outer circumference of the record by the rotation of the motor in a second direction. A first signal generating device generates a signal to rotate the motor in the first direction and a second signal generating device is employed for generating a signal to rotate the motor in the second direction a detecting circuit senses when the tone arm has been swung horizontally from the initial position at an arm rest and an OR gate circuit generates an output of a logical sum of an output signal of the first signal generating circuit and an output signal of said detecting circuit. A device circuit is driven by an output of said OR gate circuit to control the rotation of the turntable.
公开/授权文献
- US2022444A Hosiery 公开/授权日:1935-11-26
信息查询
IPC分类: