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US 6,388,676 B1Granted
Apparatus for converting color signals
AssigneeNEC Corporation
InventorKohji Numata
Life of this patent
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Abstract
An apparatus which converts R, G, B color signals into Y, Cr, Cb signals and reconverts them into R, G, B signals, compensates converted Y signals in order to confine each component of R, G, B color signals to be reconverted in a dynamic range allowable for them. It is not necessary to provide time consuming processes for checking and compensating reconverted R, G, B color signals and total time required for reconversion is reduced.
Claims2
An apparatus for converting color signals comprising:
- means for converting color signals in a first color space into corresponding color signals in a second color space,
- means for compensating at least one of said converted color signals in said second color space in order to confine each component of reconverted color signals in said first color space in a dynamic range allowable for said component,
- means for subjecting converted Y, Cr, Cb color signals to data compression,
- means for subjecting compressed Y, Cr, Cb color signals to data decompression which is a reverse process of said data compression, and
- means for reconverting decompressed color signals in said second color space into corresponding color signals in said first color space.
2 more elements
An apparatus for converting color signals comprising:
- means for converting color signals in a first color space into corresponding color signals in a second color space;
- means for subjecting the converted color signals to data compression;
- means for subjecting the compressed color signals to data decompression which is a reverse process of said data compression;
- means for reconverting decompressed color signals in said second color space into corresponding color signals in said first color space;
- and
- means for compensating at least one of said converted color signals in said second color spaced in order to confine each component of reconverted color signals in said first color space in a dynamic range allowable for said component.
3 more elements
Dependencies are inferred from the claim text.