Clamping circuit

Details Clamping circuit Clamping circuit

1993-08-23

1996-08-20

Razavi, Michael T.

Television

Camera, system and detail

Combined image signal generator and general image signal...

348607, 348186, 348533, H04N 964, H04N 521

Patent

active

055483313

ABSTRACT:
A clamping circuit for applying clamping to a signal having a plurality of components includes a frequency divider which frequency-divides a main clock signal of the clamping circuit by an even number when the plurality of components of the signal are odd in number and another frequency divider which frequency-divides the main clock signal of the clamping circuit by an odd number when the plurality of components of the signal are even in number. Manual adjustment of an optical black correction is provided which permits verification of an accurate optical black correction by monitoring color difference vectors on a vector scope.

REFERENCES:
patent: 4388640 (1983-06-01), Rhodes
patent: 4488168 (1984-12-01), Mino
patent: 4930004 (1990-05-01), Yamamoto et al.
patent: 5198890 (1993-03-01), Suga

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