发明名称 Image pickup apparatus for varying filter characteristics for focus adjustment
摘要 An image pickup apparatus includes a filter for extracting, from a video signal, a high-frequency component which varies with a state of focusing, and a control part arranged to control a cutoff frequency of the filter according to a luminance level in the video signal.
申请公布号 US6507367(B2) 申请公布日期 2003.01.14
申请号 US19970874704 申请日期 1997.06.13
申请人 CANON KABUSHIKI KAISHA 发明人 YASUDA HITOSHI
分类号 G03B13/36;G02B7/28;H04N5/232;(IPC1-7):H04N5/232 主分类号 G03B13/36
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