Television – Image signal processing circuitry specific to television – Hue control
Reexamination Certificate
2006-05-16
2006-05-16
Yenke, Brian P. (Department: 2614)
Television
Image signal processing circuitry specific to television
Hue control
C348S638000, C348S644000, C348S645000
Reexamination Certificate
active
07046305
ABSTRACT:
Method and apparatus for automatically enhancing the foliage display of a color signal includes providing the color signal in multiplexed form having alternating first and second components, the first component being substantially aligned with a flesh tone color space axis, the second component being substantialy aligned with a green tone color space axis. A de-multiplexing unit separates the first and second components to provide a first de-multiplexed component substantially aligned with the flesh tone axis and a second de-multiplexed component substantially aligned with the green tone axis. A processing unit generates from the de-multiplexed components a green tone enhancement control signal for increasing green tone contrast of the color signal; and a modifying unit modifies the magnitude of the multiplexed color signal by applying the multiplexed color signal and the green tone enhancement control signal to a multiplier to provide a modified multiplexed output signal at an output having enhanced foliage contrast. In an examplary embodiment, the green enhancement control signal and a flesh tone enhancement control signal are applied to a common multiplier thereby advantageously providing both flesh tone and foliage enhancement with an absolute minimum of circuitry for the combined functions.
REFERENCES:
patent: 3662097 (1972-05-01), Rennick
patent: 3852807 (1974-12-01), Caprio et al.
patent: 3996608 (1976-12-01), Harwood
patent: 4051510 (1977-09-01), Cochran
patent: 4091411 (1978-05-01), Sanada et al.
patent: 4183048 (1980-01-01), Isono et al.
patent: 4197556 (1980-04-01), Isono et al.
patent: 4544944 (1985-10-01), Chin
patent: 4554576 (1985-11-01), Kao
patent: 4558351 (1985-12-01), Fling et al.
patent: 4644389 (1987-02-01), Nakagawa et al.
patent: 4679072 (1987-07-01), Takayama
patent: 4695875 (1987-09-01), Kishi
patent: 4750050 (1988-06-01), Belmares-Sarabia et al.
patent: 4788586 (1988-11-01), Eckenbrecht
patent: 5333070 (1994-07-01), Ichikawa
patent: 5798801 (1998-08-01), Skinner
patent: 221354 (1987-05-01), None
Lee et al. “Favorite Color Correction for Reference Color”, ieee Transaction on Consumer Electronics, vol. 44, No. 1, Feb. 1998.
Carlsgaard Eric Stephen
Horlander Karl Francis
Miller Rick Wayne
Lagoni William A.
Laks Joseph J.
Shedd Robert D.
Thomson Licensing
Yenke Brian P.
LandOfFree
Method and apparatus for enhancing green contrast of a color... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for enhancing green contrast of a color..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for enhancing green contrast of a color... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3532756