发明名称 |
Pickup arm control mechanism and electrical circuitry therefore |
摘要 |
A control mechanism for automatically raising, swinging and lowering the pickup arm of a record player in response to the positioning of a finger of a user. The user's finger will selectively bridge pairs of contacts to establish an electrical circuit and generate an input signal to logic circuitry. The logic circuitry provides control signals which, through suitable transducers, control the motion of the arm.
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申请公布号 |
US4300228(A) |
申请公布日期 |
1981.11.10 |
申请号 |
US19800198478 |
申请日期 |
1980.10.20 |
申请人 |
BRAUN AKTIENGESELLSCHAFT |
发明人 |
MILUTZKI, UDO;SCHOTTE, DIETWALD;JOHNSON, JEFFREY |
分类号 |
G11B3/085;(IPC1-7):G11B17/00 |
主分类号 |
G11B3/085 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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