Storage medium and method to control auto exposure by the same

Details Storage medium and method to control auto exposure by the same Storage medium and method to control auto exposure by the same

2007-04-12

2009-11-24

Ye, Lin (Department: 2622)

Television

Camera, system and detail

Optics

C348S221100, C348S229100, C348S362000, C396S159000

Reexamination Certificate

active

07623179

ABSTRACT:
A method and a storage medium for auto exposure control are provided. A desired image is divided into a plurality of sample blocks, each includes red, green, and blue subpixels. A maximum exposure ratio and an average exposure ratio are obtained according to the maximum and average values of each red, green, and blue subpixel retrieved from each sample block and a predetermined desired maximum brightness and a predetermined desired average brightness. It is determined whether the maximum exposure ratio is smaller than the average exposure ratio. If it is, a strobe of the storage medium shines a flashlight based on the average exposure ratio, and, if it is not, the strobe shines a flashlight based on the maximum exposure ratio.

REFERENCES:
patent: 5696840 (1997-12-01), Usami
patent: 6463172 (2002-10-01), Yoshimura
patent: 6839087 (2005-01-01), Sato
patent: 2002/0167596 (2002-11-01), Suzuki et al.
patent: 2003/0164810 (2003-09-01), Kim
patent: 2004/0130555 (2004-07-01), Ko et al.
patent: 2005/0275747 (2005-12-01), Nayar et al.

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