Claims
- 1. A video signal processing apparatus, comprising:
- luminance signal processing means for processing a luminance signal of a video signal;
- chroma signal processing means for processing a chroma signal of said video signal;
- control signal generation means for generating a control signal to control said luminance signal processing means and said chroma signal processing means;
- level control means for controlling the level of said chroma signal processed by said chroma signal processing means by multiplying said chroma signal by a chroma gain; and
- control means incorporating a microcomputer having a control program directing said microcomputer to estimate signal levels of said luminance signal and said chroma signal which are processed by said luminance signal processing means and said chroma signal processing means respectively by determining an allowance .DELTA.yu between an upper limit of said luminance signal processed by said luminance signal processing means and a color bar luminance signal Ycb and determining an allowance .DELTA.yl between a lower limit of said luminance signal processed by said luminance signal processing means and said color bar luminance signal Ycb, wherein said control means controls said level control means by dividing each of said allowances .DELTA.yu, .DELTA.yl by a mean deviation of a color bar chrominance signal C.sub.cb and applying to said level control means the smallest result of the division as said chroma gain.
Priority Claims (1)
Number |
Date |
Country |
Kind |
6-207556 |
Aug 1994 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 08/520,605, filed Aug. 29 , 1995, U.S. Pat. No. 5,657,094.
US Referenced Citations (3)
Foreign Referenced Citations (1)
Number |
Date |
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2258784 |
Feb 1993 |
GBX |
Continuations (1)
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Number |
Date |
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Parent |
520605 |
Aug 1995 |
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