发明申请
- 专利标题: IMAGE PICKUP APPARATUS
- 专利标题(中): 图像拾取装置
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申请号: US11683658申请日: 2007-03-08
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公开(公告)号: US20070146499A1公开(公告)日: 2007-06-28
- 发明人: Satoshi Nakayama , Hiromi Matsuda
- 申请人: Satoshi Nakayama , Hiromi Matsuda
- 优先权: JPHEI06-088599 19940426
- 主分类号: H04N9/73
- IPC分类号: H04N9/73
摘要:
An image pickup apparatus such as a video camera has the capability of automatic white balance control whereby the white balance is quickly adjusted for any object even just after an operator has turned on a power supply. An image pickup element converts an optical image of an object into an electrical image signal. The image signal is applied to a signal processing circuit and separated into a luminance signal and color signals. The separated color signals or the R and B signals are amplified by gain control circuits under the control of the correction signals supplied by a correction signal computing part, and then applied to a color-difference signal forming circuit which in turn produces color-difference signals (R-Y) and (B-Y). An encoder circuit generates a television signal in the standard form from the above color-difference signals and the luminance signal. In this processing, the white balance is adjusted according to a white balance control signal generated on the basis of information about a state of illuminance onto an object picked up last time and stored in a data storing part.
公开/授权文献
- US07995111B2 Image pickup apparatus with white balance control 公开/授权日:2011-08-09