Television – Image signal processing circuitry specific to television – Hue control
Patent
1997-03-04
1999-12-07
Lee, Michael H.
Television
Image signal processing circuitry specific to television
Hue control
348652, 348651, 348253, 382167, H04N 964
Patent
active
059992301
ABSTRACT:
A tone correction apparatus corrects the tone of an input color image signal independently of each of a plurality of hue areas divided by a plurality of standard axes passing through a plurality of standard colors set on a hue coordinate system. The tone correction apparatus judges whether the hue of an input color image signal belongs to which one of first and second auxiliary hue areas, the first and second auxiliary hue areas being one of the plurality of hue areas divided by an auxiliary standard axis of an auxiliary standard color, and if the hue of the input color image signal is judged to belong to one of the first and second auxiliary hue areas, independently performs tone correction of the input color image signal with respect to color components along one standard axis of the plurality of standard axes surrounding the one auxiliary hue area to which the hue of the input color image signal belongs and along the auxiliary standard axis.
REFERENCES:
patent: 3739078 (1973-06-01), Pugsley et al.
patent: 3740459 (1973-06-01), Okada
patent: 3749825 (1973-07-01), Moore
patent: 3852807 (1974-12-01), Caprio et al.
patent: 3871023 (1975-03-01), Caprio
patent: 3996608 (1976-12-01), Harwood
patent: 4048652 (1977-09-01), Rzeszewski
patent: 4051510 (1977-09-01), Cochran
patent: 4285005 (1981-08-01), Srivastava
patent: 4296432 (1981-10-01), Engel et al.
patent: 4528586 (1985-07-01), Lewis, Jr. et al.
patent: 4554576 (1985-11-01), Kao
patent: 4558351 (1985-12-01), Fling et al.
patent: 4679072 (1987-07-01), Takayama
patent: 4837612 (1989-06-01), Miller
patent: 5134465 (1992-07-01), Ohki et al.
patent: 5255076 (1993-10-01), Koyano
patent: 5719639 (1998-02-01), Imamura
Desir Jean W.
Hitachi Denshi Kabushiki Kaisha
Lee Michael H.
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