发明名称 WHITE BALANCE ADJUSTING CIRCUIT AND VIDEO DISPLAY DEVICE USING THE SAME
摘要 PROBLEM TO BE SOLVED: To provide a video display device capable of realizing white balance adjustment in a state that the influence of any noise is suppressed. SOLUTION: A first mean value level is calculated from the maximum value and minimum value in the first set level area of a digital video signal obtained by A/D converting an analog video signal for adjusting a white balance, a second mean value level is calculated from the maximum value and minimum value in the second set level area, the clamp level of the analog video signal is adjusted based on the first mean value level, and the amplification gain of the analog video signal is adjusted based on the second mean value level.
申请公布号 JP2003009176(A) 申请公布日期 2003.01.10
申请号 JP20010186425 申请日期 2001.06.20
申请人 HITACHI LTD 发明人 HASEGAWA AKIRA;MATONO TAKAAKI;HASEGAWA TAKASHI;ASAOKA RIKIYA
分类号 G09G3/36;G09G3/20;H04N9/73;(IPC1-7):H04N9/73 主分类号 G09G3/36
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