发明授权
- 专利标题: Power saving electronic counter circuit for tape recorder
- 专利标题(中): 磁带录音机节电型电子计数器电路
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申请号: US148526申请日: 1980-05-09
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公开(公告)号: US4417135A公开(公告)日: 1983-11-22
- 发明人: Kazuyasu Motoyama , Kenzi Furuta , Katsumi Kanayama
- 申请人: Kazuyasu Motoyama , Kenzi Furuta , Katsumi Kanayama
- 申请人地址: JPX Tokyo
- 专利权人: Olympus Optical Co., Ltd.
- 当前专利权人: Olympus Optical Co., Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX54-6583879 19790528; JPX54-7149479[U] 19790528
- 主分类号: G11B27/13
- IPC分类号: G11B27/13 ; G11B27/34 ; H03K21/18 ; H03K21/30
摘要:
In a tape recorder including a circuit for generating pulses according to the running of a tape, an electronic counter circuit is provided which includes a counter for counting pulses and a display section for displaying its count value. The electronic counter circuit further includes a control circuit for disconnecting a display section from a power supply source a predetermined time period after the running of the tape is stopped and a memory for storing the count value at all times.
公开/授权文献
- US4888718A Volume measuring apparatus and method 公开/授权日:1989-12-19
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