Imaging apparatus having electronic zooming with high and low sp

Details Imaging apparatus having electronic zooming with high and low sp Imaging apparatus having electronic zooming with high and low sp

1989-08-01

1990-03-20

Ng, Jin F.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358180, H04N 314

Patent

active

049105990

ABSTRACT:
An imaging apparatus for sequentially reading photoelectrically converted image information. The apparatus is capable of operating selectively either in a first mode in which a desired portion of the image information is read at a frequency different from the frequency for reading other portions of the image information, followed by a processing to form an effective image, and a second mode in which the desired portion of the image information is read at the same frequency as the frequency for reading other portions of the image information, followed by a processing to form an effective image. At least the clamping timing is changed in accordance with a change-over between the first mode and the second mode.

REFERENCES:
patent: 3935381 (1976-01-01), Petrocelli et al.
patent: 4002824 (1977-01-01), Petrocelli et al.
patent: 4426664 (1984-01-01), Nagumo et al.
patent: 4644405 (1987-02-01), Roy et al.
patent: 4689686 (1987-08-01), Hashimoto et al.
patent: 4703365 (1987-10-01), Mumford
patent: 4734772 (1988-03-01), Akiyama
patent: 4742392 (1988-05-01), Hashimoto
patent: 4791308 (1988-12-01), Nagashima
Patent Abstracts of Japan, vol. 7, No. 40 (E-159), 2/17/1983, p. 16 E 159.
JP-A-57 190 466 (Nippon Denki K.K.) Nov. 24, 1982.

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