Image pickup system

Details Image pickup system Image pickup system

2003-09-24

2010-10-26

Czekaj, David (Department: 2621)

Television

Special applications

With endoscope

Reexamination Certificate

active

07821529

ABSTRACT:
To provide an image pickup system having CCDs25driven at different frequencies respectively which can drive each CCD25with a predetermined frequency if a detachable camera head (or electronic endoscope)28is used and also can process a signal processing clock of a video processing circuit29with one type of clock. A drive signal of the predetermined frequency supplied to the CCD is produced via a generating circuit CXO155in the video processing circuit29, a frequency dividing circuit132and a timing generator (T.G.)131. A CCD signal outputted from the CCD25is inputted to a line memory139in a floating circuit135. As a writing clock (WCK) of the line memory139, the one which is divided in the frequency dividing circuit132to a frequency in accordance with the CCD25to be used is used, and as a reading clock (RCK), the one of one type of frequency is used without regard to the CCD25to be used. Hence, it is possible to perform the signal processing of a secondary circuit136of the line memory139and following ones always with a common generating clock.

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