Patent ID: 6856347

Claim:
A photic image processing method executed by a photic image pick-up circuit including a lamp having a brightness, a lens and charge coupled device (CCD), comprising steps of: (1) processing a photic image unit to generate a photic image signal having a plurality of basic image signals each of which represents a fundamental color, wherein said basic image signals of said photic image signal are respectively 3 basic signals indicative of red, green and blue fundamental colors; (2) performing a first regulating compensation to each of said basic image signals of said photic image to generate first compensated basic image signals, wherein said first regulating compensation regulates and equilibrates said photic image signals of red, green and blue fundamental colors and compensates a lamp aging phenomenon of said photic image pick-up circuit; (2a) eliminating a common-mode voltage of said photic image signal; (2b) regulating a DC voltage offset of said photic image signal; (2c) amplifying and outputting said photic image signal whose said DC voltage offset is regulated; (2d) performing said first regulating compensation in response to a control signal, in order to equilibrate said basic image signals of said photic image signal; (3) multiplexing said first compensated basic image signals in a period of time to generate a multiplexed photic image signal having said compensated basic image signals in series in said period of time, wherein said period is equal to a time of processing a photic image unit; and (4) performing a second regulating compensation for said multiplexed photic image signal to generate a second compensated multiplexed photic image signal.