Focusing system and image input apparatus having automatic focus

Details Focusing system and image input apparatus having automatic focus Focusing system and image input apparatus having automatic focus

1990-07-10

1991-11-12

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358228, 358209, 358909, H04N 5232

Patent

active

050652460

ABSTRACT:
An automatic focusing system includes an image pickup system for picking up an image and for outputting an image signal, a compression part for digitally compressing the image signal from the image pickup system and for outputting a compressed image signal, an operation part for obtaining focal information by carrying out a digital operation on the compressed image signal, and an adjusting part responsive to the focal information for automatically adjusting a focal point of the image pickup system to an in-focus position.

REFERENCES:
patent: 4541010 (1985-09-01), Alston
patent: 4544953 (1985-10-01), Goldman
patent: 4969045 (1990-11-01), Haruki et al.
"An Automatic Focal Adjustment in Television Camera Using Mountain-Climbing Servo System," NHK Technical Report, vol. 17, No. 1, 1965, pp. 21-37, No English Translation.
Hideo Toyoda et al., "New Automatic Focusing System for TV Cameras," Television Society Technical Report, pp. 7-12, No English Translation.
Hideo Toyoda et al., "New Automatic Focusing System for TV Cameras," Television Society Technical Report, pp. 39-44, No English Translation.
Hirotugu Murashima et al., "Automatic Focusing for Video Cameras Using Digital Integration," Research Center of Sanyo Electric Co., Ltd., pp. 13-18, No English Translation.

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