发明授权
- 专利标题: Sound generating circuit for timepiece
- 专利标题(中): 钟表发声电路
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申请号: US281291申请日: 1981-07-07
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公开(公告)号: US4481852A公开(公告)日: 1984-11-13
- 发明人: Shunichi Makuta , Hiroshi Miyasaka , Katsuhiko Takebe
- 申请人: Shunichi Makuta , Hiroshi Miyasaka , Katsuhiko Takebe
- 申请人地址: JPX Tokyo
- 专利权人: Rhythm Watch Company Limited
- 当前专利权人: Rhythm Watch Company Limited
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX55-94775 19800710; JPX55-105249 19800731; JPX55-106530 19800801; JPX55-106531 19800801
- 主分类号: G04G13/02
- IPC分类号: G04G13/02 ; G10K15/02 ; G10F1/00
摘要:
A sound generating circuit for a timepiece including a sound base signal generator, a program divider, a dividing ratio selecting counter a sound interval base signal generator and a sound producer, whereby the sounding action of frequencies which repeatedly changes at the sound intervals and cycles is performed and can produce the onomatopoetic sounds of bird chirp, insect churr and the like which feels soft and soothing for the users.
公开/授权文献
- US4933560A Pyroelectric infrared sensors 公开/授权日:1990-06-12
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