Solid state pickup system having improved color reproducibility

Details Solid state pickup system having improved color reproducibility Solid state pickup system having improved color reproducibility

1990-06-07

1991-11-05

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 44, H04N 907

Patent

active

050634399

ABSTRACT:
A solid state pickup system having improved color reproducibility characteristics involves using additional photodetector elements to produce color signals including wavelength components in areas of negative stimulus values. These color signals are subtracted from conventionally produced color signals, such conventionally produced color signals being incapable of representing the negative stimulus values. The algebraic difference between the color signals resulting from the subtraction operation results in a color signal adequately represented in a wider range of wavelength characteristics, including the negative stimulus values, thus greatly improving color reproducibility.

REFERENCES:
patent: 4930008 (1990-05-01), Suzuki et al.
patent: 4965663 (1990-10-01), Sasaki

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