Television – Camera – system and detail – Combined image signal generator and general image signal...
Reexamination Certificate
2006-07-25
2006-07-25
Ho, Tuan (Department: 2622)
Television
Camera, system and detail
Combined image signal generator and general image signal...
C348S228100, C348S234000, C348S241000
Reexamination Certificate
active
07081921
ABSTRACT:
A front end signal processing method and apparatus for processing a signal from an image sensor are provided for readily clamping a black level, improving the manufacturing yield, and reducing the power consumption. A luminance detector/digitizer receives a sensor output signal from an image sensor, detects luminance information included in the sensor output signal, and generates a digital luminance signal representative of the detected luminance information. A digital processor receives the digital luminance signal, and multiplies the digital luminance signal by a predetermined gain code to generate the multiplication result as a front end processed signal output. An optical black clamp receives the digital luminance signal from the luminance signal detector/digitizer and supplies a feedback signal produced from the digital luminance signal to the luminance signal detector/digitizer to clamp a black level of the luminance signal to a constant value.
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Chuang Sean
Isumi Tatsuo
Koen Mike
Matsusako Kyoji
Morikawa Akira
Hernandez Nelson D
Ho Tuan
Telecky , Jr. Frederick J.
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