发明授权
- 专利标题： Phonograph record detecting arrangement
- 专利标题（中）： 留声机记录检测装置
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申请号： US527636申请日： 1974-11-27
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公开(公告)号： US3966330A公开(公告)日： 1976-06-29
- 发明人: Keith Douglas Ridler , Colin Howard Stanwell-Smith
- 申请人： Keith Douglas Ridler , Colin Howard Stanwell-Smith
- 申请人地址： EK Belfast
- 专利权人： Strathearn Audio Limited
- 当前专利权人： Strathearn Audio Limited
- 当前专利权人地址： EK Belfast
- 优先权： UK56188/73 19731204; UK29281/74 19740702; UK29282/74 19740702
- 主分类号： G11B19/04
- IPC分类号： G11B19/04 ; G11B19/10 ; G11B19/12 ; G11B19/26 ; G11B33/10 ; G11B3/60 ; G11B17/04
摘要：
The presence and size of a recorded disc on a turntable is detected and indicated by the interruption of a beam or beams of energy which passes in the plane of the disc, through a hole or holes in a turntable, or beneath the turntable.
公开/授权文献
- US5844278A Semiconductor device having a projecting element region 公开/授权日：1998-12-01
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