Device and method for calculating a brightness signal

Details Device and method for calculating a brightness signal Device and method for calculating a brightness signal

1997-06-27

1999-01-19

Flynn, Nathan

Television

Image signal processing circuitry specific to television

Brightness control

348712, 348234, 348659, H04N 977

Patent

active

058619267

ABSTRACT:
The present invention relates to a digital image processing system, for example, video cameras, digital cameras, cathode ray tubes (CRT) etc. With reference to the calculation of the brightness signal, the main idea of the present invention is to carry out the calculations of it by using only the additions, the subtractions and the shifts, which require relatively short operation times, without the multiplications and divisions by substituting only the shift operations of the digits for them. Also, according to the present invention, high resolution is accomplished by a high speed process in calculating the brightness of an image signal. Also, it enables high speed digital image processing.

REFERENCES:
patent: 5220412 (1993-06-01), Oka
patent: 5313274 (1994-05-01), Abe

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