发明名称 |
Video signal processing circuit for a video camera using a luminance signal |
摘要 |
Auto focus control and/or auto exposure control is carried out by using a luminance signal before gamma correction, before addition of aperture signal but after hand shake correction. Auto white balance control is carried out by using a color signal after hand shake correction. Consequently, precise auto focus control, auto exposure control and/or auto white balance control can be done. The field memory for electronic zooming and/or hand shake correction is also used as a field memory for noise reduction. Consequently, a video signal processing circuit which is inexpensive and simple can be implemented.
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申请公布号 |
US5345264(A) |
申请公布日期 |
1994.09.06 |
申请号 |
US19930021590 |
申请日期 |
1993.02.24 |
申请人 |
SANYO ELECTRIC CO., LTD. |
发明人 |
MURATA, HARUHIKO;MORI, YUKIO;MAENAKA, AKIHIRO;TAKUMA, MASAO;KAWAKAMI, KIYOTADA;ASAEDA, TORU;OKINO, TOSHIYUKI;IINUMA, TOSHIYA;KOBAYASHI, AKIO;HARUKI, TOSHINOBU |
分类号 |
H04N5/217;H04N5/228;H04N5/232;H04N5/235;H04N9/73;H04N9/78;(IPC1-7):H04N9/68 |
主分类号 |
H04N5/217 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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