Television – Camera – system and detail – Combined image signal generator and general image signal...
Patent
1992-11-30
1997-09-23
Boudreau, Leo
Television
Camera, system and detail
Combined image signal generator and general image signal...
348229, 348257, 348363, H04N 5217, H04N 5235, H04N 5238, H04N 516
Patent
active
056710151
ABSTRACT:
A signal processing apparatus includes a first loop circuit for adjusting gains of a plurality of variable gain amplifiers to which signals output from a charge-coupled device (CCD) imager of multiple-channel reading type are applied, a control circuit for driving and controlling an iris in accordance with output signals from the plurality of variable gain amplifiers, a second loop circuit for adjusting levels of pilot signals to be superimposed upon the output signals of the CCD imager at a desired level, respectively, a third loop circuit for controlling levels of the pilot signals which are superimposed upon the output signals of the CCD imager so as to be coincident with each other, and a control unit for controlling the first loop circuit and the control circuit, the second loop circuit, and the third loop circuit so that they are operated in a time-division fashion.
REFERENCES:
patent: 4525741 (1985-06-01), Chahal et al.
patent: 4979043 (1990-12-01), Suzuki et al.
patent: 5008757 (1991-04-01), Kimura et al.
patent: 5043812 (1991-08-01), Citta et al.
patent: 5311311 (1994-05-01), Harigai et al.
Prior art shown in FIG. 1 and 2 of the disclosure.
Patent Abstracts of Japan, vol. 14, No. 259 (E-937) 5 Jun. 1990 & JP-A-20 78 382 (Hitachi Ltd) 19 Mar. 1990.
Patent Abstracts of Japan, vol. 14, No. 105 (E-895) 26 Feb. 1990 & JP-A-13 05 672 (NEC Corp.) 8 Dec. 1989.
Tanaka Kenji
Yagi Osamu
Boudreau Leo
Frommer William S.
Shalwala Bipin
Sinderbrand Alvin
Sony Corporation
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