Television – Camera – system and detail – Combined image signal generator and general image signal...
Reexamination Certificate
2005-07-26
2005-07-26
Moe, Aung (Department: 2612)
Television
Camera, system and detail
Combined image signal generator and general image signal...
C382S168000, C358S443000
Reexamination Certificate
active
06922209
ABSTRACT:
An imaging apparatus and method provides a wide dynamic range and is capable of displaying an improved color in low-luminance regions, and an image signal processing method thereof. In the imaging apparatus, a first process divides the voltage level of an analog image signal into a plurality of sections and amplifies the analog image signal with a plurality of different gains according to each section, and a second process converts the analog image signal amplified with the different gains into a digital signal, and non-linearly gamma-corrects the digital signal according to each section. The plurality of different gains may be inversely proportional to the luminance level of the analog image signal. Thus, the level of an analog signal in a low-luminance region is amplified with a gain greater than in a high-luminance region before gamma correction, so that signal-to-noise (S/N) ratio in the low-luminance region of an image is increased, thereby improving sensitivity of the image following gamma correction. Accordingly, a wide dynamic range is provided. An optional chrominance controller of the imaging apparatus controls chrominance gain of the digital signal and outputs the result, thereby displaying an improved color in low-luminance regions of the image.
REFERENCES:
patent: 5144442 (1992-09-01), Ginosar et al.
patent: 5396288 (1995-03-01), Tsugita et al.
patent: 5818521 (1998-10-01), Hieda
patent: 5828793 (1998-10-01), Mann
patent: 5982926 (1999-11-01), Kuo et al.
patent: 6130724 (2000-10-01), Hwang
patent: 6373533 (2002-04-01), Kawabata et al.
patent: 6384937 (2002-05-01), Matama
patent: 6573934 (2003-06-01), Lee
patent: 199202243993 (1995-03-01), None
Hwang Jung-Hyun
Na Woon
Mills & Onello LLP
Moe Aung
Samsung Electronics Co,. Ltd.
Tillery Rashawn N
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