Image processor with reduction of enlarged image data to form im

Details Image processor with reduction of enlarged image data to form im Image processor with reduction of enlarged image data to form im

1992-07-01

1994-01-18

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358445, H04N 1393

Patent

active

052803651

ABSTRACT:
An image processor in which input image data is sampled at a sampling circuit at a constant rate corresponding to P times the rate of the input image data and then subjected at a decimating circuit 14 to a decimating/reducing operation with a magnification of 1/Q to obtain image data having a magnification of P/Q in a horizontal scanning direction. An original-document reading motor is controlled under a scanner controller so that a relative moving speed between an image and a CCD is set to be lower than an ordinary moving rate. Under this condition, the image is repetitively read a plurality of times with respect to an identical line and then subjected at a line decimating circuit to a decimating/reducing operation on every line basis to obtain a resultant image having a desired magnification in a vertical scanning direction.

REFERENCES:
patent: 4282550 (1981-08-01), Coviello
patent: 4734785 (1988-03-01), Takei et al.
patent: 4851922 (1989-07-01), Takayama et al.
patent: 5214519 (1993-05-01), Faulhaber

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