Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1987-12-07
1989-08-29
Groody, James J.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 75, G03F 308, H04N 146
Patent
active
048622559
ABSTRACT:
A color correcting circuit for thermal printer comprises a first circuit for obtaining a first degree correction operation result, a second circuit for obtaining a second degree correction operation result, and a difference limiting circuit for selectively outputting a correction data. The first degree correction operation makes the relationship between the density of an input image and the density of an output image linear for each primary color. The second degree correction operation reduces a difference between the density of the input image and the density of the output image by use of the method of least squares for each primary color. The difference limiting circuit selectively outputs as the correction data the second degree correction operation result when a difference between the first and second degree correction operation results falls within a predetermined range of a boundary value, and selectively outputs as the correction data a value which is deviated from the first degree correction operation result by the boundary value when the difference falls outside the predetermined range of the boundary value. The color correction of the input image is carried out based on the correction data outputted from the difference limiting circuit.
REFERENCES:
patent: 4533928 (1985-08-01), Sugiura et al.
patent: 4584601 (1986-04-01), Suzuki et al.
patent: 4631578 (1986-12-01), Sasaki et al.
patent: 4642681 (1987-02-01), Ikeda
patent: 4643563 (1987-02-01), Sayanagi
patent: 4672393 (1987-06-01), Uchikata et al.
patent: 4682216 (1987-07-01), Sasaki et al.
patent: 4796086 (1989-01-01), Ohta et al.
Hiroaki Kotera, "Tone and Color Reproduction Method for Hard-Copy Printer", The Journal of the Institute of Television Engineers of Japan, vol. 37, No. 7 (1983), pp. 546-552.
Kitamura Hiroki
Miyazaki Ken-ichi
Mizoguchi Yutaka
Ohara Terumi
Shinya Tadao
Groody James J.
Svihla Randall S.
Victor Company of Japan Ltd.
LandOfFree
Color correcting circuit for thermal printer selectively outputt does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Color correcting circuit for thermal printer selectively outputt, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Color correcting circuit for thermal printer selectively outputt will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2243334