Image pick-up device with auto lens control for freely selecting

Details Image pick-up device with auto lens control for freely selecting Image pick-up device with auto lens control for freely selecting

1992-03-24

1994-01-18

Razavi, Michael T.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358224, H04N 5238, H04N 530

Patent

active

052803597

ABSTRACT:
A video camera specifies as a photometric area any block of a field of image to be picked up and picks up a subject to be seen by optimizing the amount of light regardless of the position where a television camera is located. The video camera comprises a solid-state image pick-up element (CCD), a display device and devices for controlling the diaphragm of a lens. In operation, the image picked up by the solid-state image pick-up element is divided into plural blocks to be displayed. Any block of these plural blocks can be specified as a photometric area. The amount of light for the photometric area is calculated and the diaphragm of the lens is controlled so that the subject can be seen by optimizing amount of light.

REFERENCES:
patent: 4412730 (1983-11-01), Saegusa et al.
patent: 4829382 (1989-05-01), Hess et al.
patent: 4887121 (1989-12-01), Pritchard
patent: 5049997 (1991-09-01), Arai
patent: 5051833 (1991-09-01), Tsuji
patent: 5128711 (1992-07-01), Terashita et al.
Patent Abstracts of Japan, vol. 9, No. 110 (E-314) May 15, 1985 & JP-A-60 000 170 (Canon K.K.u) Jan. 5, 1985--Abstract.
Patent Abstracts of Japan, vol. 15, No. 140 (P-1188) Apr. 9, 1991 & JP-A-30 18 836 (Canon Inc.) Jan. 28, 1991--Abstract.
Patent Abstracts of Japan, vol. 15, No. 175 (E-1063) May 2, 1991 & JP-A-30 38 977 (Olympus Optical Co. Ltd). Feb. 20, 1991--ABS.

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