Apparatus and method for compensating a color carrier of an...

Details Apparatus and method for compensating a color carrier of an... Apparatus and method for compensating a color carrier of an...

2006-06-13

2006-06-13

Hsia, Sherrie (Department: 2614)

Television

Synchronization

Phase locking regenerated subcarrier to color burst

C348S536000, C348S549000

Reexamination Certificate

active

07061541

ABSTRACT:
An apparatus to compensate a color carrier in an image processing system to convert an input analog image signal into a digital image signal includes a detector, a phase-locked loop unit, a difference detector, and a color signal processor. The detector detects a frequency of the color carrier in a color signal of the digital image signal. The phase-locked loop unit generates a subcarrier frequency by performing a phase-locked loop operation on a system clock signal applied to the image processing system. The difference detector detects a difference between the frequency of the color carrier and the subcarrier frequency. The color signal processor compensates for a phase deviation of the color carrier of the color signal using the subcarrier frequency generated by the phase-locked loop unit.

REFERENCES:
patent: 6380980 (2002-04-01), Huang
patent: 10-210492 (1998-08-01), None
patent: 11-355796 (1999-12-01), None

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