Method and apparatus using symmetrical coding look-up tables for

Details Method and apparatus using symmetrical coding look-up tables for Method and apparatus using symmetrical coding look-up tables for

1994-04-28

1996-04-23

Kostak, Victor R.

Television

Image signal processing circuitry specific to television

Matrixing or mixing

345154, 358530, H04N 967, H04N 146, G09G 504

Patent

active

055108520

ABSTRACT:
A method and apparatus for performing color space conversion between digitized YCbCr components and digitized RGB components uses a color lookup table unit which is provided with transformation component values based on a selected one of two sets of conversions. A plurality of adders are coupled to the lookup table unit so as to receive the outputs thereof and generate individual color components of converted space by adding the transformation component values corresponding to each of the individual color components of converted space relative to the color components of original space.

REFERENCES:
patent: 4507676 (1985-03-01), Dischert et al.
patent: 4835599 (1989-05-01), Sigel
patent: 5124688 (1992-06-01), Rumball
patent: 5262847 (1993-11-01), Rodriguez et al.
patent: 5272468 (1993-12-01), Read
patent: 5416614 (1995-05-01), Crawford

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