发明授权
- 专利标题: Photographic operation control circuit for camera
- 专利标题(中): 相机摄影操作控制电路
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申请号: US105659申请日: 1979-12-20
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公开(公告)号: US4458996A公开(公告)日: 1984-07-10
- 发明人: Isao Harigaya , Shuichi Tamura , Mutsuhide Matsuda , Michio Hirohata , Fumio Ito , Tetsuya Taguchi
- 申请人: Isao Harigaya , Shuichi Tamura , Mutsuhide Matsuda , Michio Hirohata , Fumio Ito , Tetsuya Taguchi
- 申请人地址: JPX Tokyo
- 专利权人: Canon Kabushiki Kaisha
- 当前专利权人: Canon Kabushiki Kaisha
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX53-163547 19781227
- 主分类号: G03B13/36
- IPC分类号: G03B13/36 ; G02B7/28 ; G02B7/36 ; G03B17/18 ; G03B19/12
摘要:
In the disclosed camera exposure control, data recording and film winding are performed sequentially and the system is protected from battery voltage drop arising from the effective increase in consumption of electrical energy necessary to make each exposure as compared with the ordinary camera, by detecting the battery level upon occurrence of a prescribed phase of the operating cycle. In one embodiment, the battery is also checked at a subsequent step of the cycle (for example, film winding operation is permitted only when the battery level is above the predetermined level). According to an embodiment of the invention, a sequence control circuit controls the photographic operation sequentially.