Method and apparatus for changing brightness of image

Details Method and apparatus for changing brightness of image Method and apparatus for changing brightness of image

2006-04-11

2006-04-11

Hsia, Sherrie (Department: 2614)

Television

Image signal processing circuitry specific to television

Brightness control

C348S673000

Reexamination Certificate

active

07027105

ABSTRACT:
A method and an apparatus for changing the brightness of an image are provided. The method for changing the brightness of an image includes obtaining a level incremental rate, which denotes the degree to which the brightness of three input color components, i.e., first, second and third color components, will be increased according to a determined color gamut, scaling the input color components using the level incremental rate and determining the results of the scaling as incremental values of the input color components, obtaining a fourth color component value using the incremental values, and obtaining output color components, the brightnesses of which are increased from those of the input color components, using the fourth color component value and the incremental values.

REFERENCES:
patent: 5233385 (1993-08-01), Sampsell
patent: 5929843 (1999-07-01), Tanioka
patent: 6434268 (2002-08-01), Asamura et al.
patent: 6845181 (2005-01-01), Dupin et al.
patent: 0 606 993 (1994-07-01), None
patent: 0 778 696 (1997-06-01), None
patent: 01/37249 (2001-05-01), None
European Search Report issued by the European Patent Office on Sep. 28, 2004 in corresponding application 03000482.4-2202.

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