Signal processor

Details Signal processor Signal processor

2005-11-15

2005-11-15

Lee, Michael H. (Department: 2614)

Television

Image signal processing circuitry specific to television

Brightness control

C348S691000

Reexamination Certificate

active

06965417

ABSTRACT:
An object of the present invention is to provide a signal processor which improves the offset accuracy of a video signal without increasing the number of bits of a circuit.An N-bit adder (103) adds a video signal (S101) and an upper-N-bit signal of a brightness control signal (S102) as an offset value. A 1-bit pulse generator (107) generates a 1-bit pulse signal (S107) in which “1” and “0” have equal chances of appearing at random. A selector (106) selects the 1-bit pulse signal (S107) when the LSB of the brightness control signal (S102) is “1”, while selects a ground level “0” when the LSB is “0”, and supplies the selected signal to a carry input of the N-bit adder (103).

REFERENCES:
patent: 4792733 (1988-12-01), Redfern
patent: 5734362 (1998-03-01), Eglit
patent: 5861926 (1999-01-01), Kwon
patent: 3-1229997 (1991-12-01), None
patent: 06311462 (1994-11-01), None
patent: 06194450 (1996-07-01), None
patent: 08190362 (1996-07-01), None

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