Color video drive circuit

Details Color video drive circuit Color video drive circuit

H - Electricity

04

N

375/46

H04N 9/64 (2006.01) G09G 1/28 (2006.01)

Patent

CA 1247265

COLOR VIDEO DRIVE CIRCUIT Abstract of the Disclosure A gain control and signal conversion stage in a data converter for a color video CRT display system is disclosed. The disclosed circuit includes capaci- tors for supplying current at a selected output volt- age level, voltage followers for charging the capaci- tors, and modulators for forming low-level analog color signals for control of video amplifiers in a color CRT display. Digital control of video bright- ness or contrast and precise color tracking are fea- tures which are discussed.

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