[54] APPARATUS FOR COLOR CORRECTION OF IMAGE SIGNALS OF A COLOR TELEVISION CAMERA
[75] Inventors: Norihiko Kawada; Shoichi Ioka;
Masahiro Yamashita; Moriki
Miyamoto; Katsumi Degawa, all of
Tokyo, Japan
[73] Assignee: Ikegani Tsushinki Co., Ltd., Tokyo, Japan
[21] Appl. No.: 635,600
[22] PCT Filed: Apr. 27, 1990
[86] PCT No.: PCT/JP90/00570
§ 371 Date: Dec. 28, 1990
§ 102(e) Date: Dec. 28, 1990 [87] PCT Pub. No.: WO90/13975
PCT Pub. Date: Nov. 15, 1990
[30] Foreign Application Priority Data
Apr. 28. 1989 [JP] Japan 1-107753
[51] Int. CI.-' H04N 9/64; H04N 17/02
[52] U.S. CI 358/10; 382/48
[58] Field of Search 358/10, 29, 27, 41.
358/139; 382/48, 61
[56] References Cited
U.S. PATENT DOCUMENTS
3.987.4S2 10/1976 Robers 358/10
4.285.004 8/1981 Morrison 358/10
4,326.219 4/1982 Griesshaber 358/139
4,414,573 11/1983 Griesshaber 358/10
4,709,260 11/1987 Geerts 358/10
5,065,351 11/1991 Johnston 358/10
FOREIGN PATENT DOCUMENTS
57-196664 12/1982 Japan .
61-50384 4/1986 Japan .
61- 103979 7/1986 Japan .
62- 104389 5/1987 Japan .
62-133883 6/1987 Japan .
Primary Examiner—Tommy P. Chin
Attorney, Agent, or Firm—Nils H. Ljungman and
Associates
[57] ABSTRACT
A color correction apparatus for a color television camera, in which color correction is performed while comparing two images obtained from a test chart signal generated from a test chart signal-generating circuit disposed in the interior of a camera device or outside the camera device and a pick-up signal generated by photographing a test chart by a camera device. By arranging circuits for automatizing these functions, color correction based on various data is automatically carried out, and when a special effect is produced by performing color correction of other camera device based on color correction data detected by one camera device, the same color correction can be simultaneously performed in other camera device based on the color correction data of one camera device.
