Automatic white-balance adjusting apparatus with reduced sensiti

Details Automatic white-balance adjusting apparatus with reduced sensiti Automatic white-balance adjusting apparatus with reduced sensiti

1990-01-17

1991-06-04

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 41, 358 43, 358 44, H04N 973

Patent

active

050218751

ABSTRACT:
An automatic white balance adjusting apparatus having a light measuring circuit, a determining circuit, and adjusting circuit and a time-average calculating circuit, in operation, color temperature adjustment data are calculated by using a value obtained by averaging color temperature information of a light source over a predetermined time period.

REFERENCES:
patent: 4368482 (1983-01-01), Machida et al.
patent: 4506290 (1985-03-01), Hashimoto
patent: 4584598 (1986-04-01), Kutaragi
patent: 4595946 (1986-06-01), Uehara et al.
patent: 4602277 (1986-07-01), Guichard
patent: 4605955 (1986-08-01), Hashimoto et al.
patent: 4682210 (1987-07-01), Ikemura et al.
patent: 4736241 (1988-04-01), Murakami et al.
National Technical Report vol. 31, No. 1, Feb. 1985, pp. 90-97, "Automatic-Tracing White Balance System for Color Video Cameras", Tomio Shimizu et al.

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