Television – Camera – system and detail – Combined image signal generator and general image signal...
Reexamination Certificate
2007-10-30
2007-10-30
Srivastava, Vivek (Department: 2622)
Television
Camera, system and detail
Combined image signal generator and general image signal...
C348S241000
Reexamination Certificate
active
11415000
ABSTRACT:
An image processor system for a charge coupled device (CCD) or CMOS imaging system includes a correlated double sample and variable gain (CDSVGA) circuit for receiving data from a CCD system and an automatic gain control (AGC) circuit which first controls gain by adjusting said CCD system and then for yet a higher gain level makes gain adjustments in said CDSVGA circuit AND a digital gain circuit to produce a combined target gain level. A processing system for an imager device includes a camera system for producing an imager signal, a correlated double sample (CDS) circuit for receiving data from an imager, a variable gain amplifier (VGA), an analog-to-digital converter (ADC) coupled to said CDS circuit, a digital gain circuit (DGC) coupled to said ADC, and an automatic gain control (AGC) circuit coupled to said DGC for controlling the CDS circuit and the DGC. The processing circuitry includes an analog front end and a digital signal processing system for capturing full motion video and outputting a CCIR 601 4:2:2 YCrCb video data output for presentation on a user selected display.
REFERENCES:
patent: 5708263 (1998-01-01), Wong
patent: 6100928 (2000-08-01), Hata
patent: 6580456 (2003-06-01), Jacobs
patent: 2005/0053352 (2005-03-01), McKain et al.
Azim Syed Khalid
Chao Shih-Chung
Hansford Alan
Harris Brannon Craig
Holberg Douglas R.
Cirrus Logic Inc.
Daniels Anthony J.
Lin Steven
Srivastava Vivek
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