Image scanner apparatus with scanning function

Details Image scanner apparatus with scanning function Image scanner apparatus with scanning function

1986-12-05

1988-07-26

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358282, H04N 1387

Patent

active

047604638

ABSTRACT:
An image scanning section has an optical system for scanning an original in a two-dimensional manner, and a photoelectric converter for converting an optical image obtained by the optical system into an electrical signal. A binary coding section performs simple binary coding of the electrical signal supplied from the photoelectric converter in such a manner as not to accompany pseudo-gray scale coding, and performs pseudo-gray scale binary coding of the electrical signal supplied from the photoelectric converter in such a manner as to accompany pseudo-gray scale coding. An area designating section designates an area on the original. A scanning mode designating section designates image scanning modes within and outside an area designated by the area designating section and has at least a first scanning mode designating section which does not accompany pseudo-gray scale coding and a second scanning mode designating section which accompanies pseudo-gray scale coding. A controller controls an output or outputs from the binary coding section in accordance with designation by the area and mode designating sections.

REFERENCES:
patent: 4458238 (1984-07-01), Learn
patent: 4475239 (1984-10-01), van Raamsdonk
patent: 4485408 (1984-11-01), Kamiz Yo
patent: 4538183 (1985-08-01), Kanno
patent: 4656525 (1987-04-01), Norris
patent: 4663662 (1987-05-01), Sekizawa
patent: 4686579 (1987-08-01), Sakamoto
patent: 4692796 (1987-09-01), Yamada
patent: 4692797 (1987-09-01), Matsumoto

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