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White balance correcting device
   
Document Number
US Patent 7307656
Issued Date
December 11, 2007
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Abstract
A white balance correcting device for correcting white balance by using video signals is arranged to be capable of accurately obtaining white balance even in a case where a picture includes only a small white part therein. The white balance correcting device is arranged to divide a picture into a plurality of blocks, to obtain a mean value of signals by averaging signals of each divided block as representing the block and a peak value of luminance from a signal having the highest luminance among others in each divided block also as representing the block, and to use, for white balance control, either the mean value or the peak value according to the state of the object of shooting.
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Number of Claims:
14
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Owner
Published
December 11, 2007
Application Number
11/222,438
Filed
September 8, 2005
US Classification
348/225.1   348/E9.052
Int'l Classification
H04N   9/73   (20060101)  
Examiner
Assistant Examiner
Parent Case
CROSS-REFERENCE TO RELATED APPLICATIONS This application is a divisional of application Ser. No. 09/583,251, filed May 31, 2000 now U.S. Pat. No. 6,965,401, the entire disclosure of which is hereby incorporated by reference.
Priority Data
Jun 04, 1999 [JP] 11-158564
USPTO Field of Search
348/225.1  
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