发明授权
US4914518A Electronic still camera with a solid state image pickup whose output
part is kept from being driven during a major part of the image pickup
period
失效
电子静态相机具有固态图像拾取器,其输出部分在图像拾取周期的大部分期间不被驱动
- 专利标题: Electronic still camera with a solid state image pickup whose output part is kept from being driven during a major part of the image pickup period
- 专利标题(中): 电子静态相机具有固态图像拾取器,其输出部分在图像拾取周期的大部分期间不被驱动
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申请号: US366258申请日: 1989-06-12
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公开(公告)号: US4914518A公开(公告)日: 1990-04-03
- 发明人: Akira Suga
- 申请人: Akira Suga
- 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: JPX62-008073 19870119
- 主分类号: H01L27/148
- IPC分类号: H01L27/148 ; H04N5/335 ; H04N5/341 ; H04N5/361 ; H04N5/363 ; H04N5/369 ; H04N5/372 ; H04N5/378
摘要:
An electronic still camera comprises a solid state image pickup element including photosensitive elements, a vertical transfer CCD and a horizontal transfer CCD, and a read drive circuit for the solid state image pickup element. Before the start of reading the signal from the solid state image pickup element, at least one pulse is applied to the horizontal transfer CCD to remove electric charges of the interior of the CCD to nullify dark current. The above-described pulse applied to the horizontal transfer CCD before the start of reading the signal from the solid state image pickup element lies in an image pickup period, and the frequency of the above-described pulse of this time is less than the frequency in the read period.
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