Apparatus for magnifying or reducing a color image in which sequ

Details Apparatus for magnifying or reducing a color image in which sequ Apparatus for magnifying or reducing a color image in which sequ

1986-04-25

1988-05-10

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 78, 358287, H04N 1393, H04N 146

Patent

active

047439637

ABSTRACT:
In a color picture image forming apparatus wherein manuscript picture image data read optically is decomposed into color signals of a plurality of types, the color decomposed picture image data is temporarily stored in a memory device, and a picture image recording device is driven by the stored picture image data for reproducing on a copying paper a color picture image corresponding to a manuscript picture image, at the time of enlarging or reducing the size of the picture image, a read address signal of the memory device corresponding to a set magnification or reduction degree is formed, and the read address signal thus formed is supplied to the memory device thereby enlarging or reducing the size of the reproduced color picture image. The color data, which may be RGB data, is stored sequentially in the memory means and is selectively read out in accordance with previously-determined read control data determined on the basis of the set magnification or reduction degree. Some of the color data may be read out more than once when the image is to be magnified, while some of the color data may be skipped when the image is to be reduced.

REFERENCES:
patent: 4275450 (1981-06-01), Potter
patent: 4412252 (1983-10-01), Moore et al.
patent: 4454537 (1984-06-01), Okada et al.
patent: 4564865 (1986-01-01), Yamada
patent: 4589035 (1986-05-01), Yamanishi et al.
patent: 4605957 (1986-08-01), Yamada
patent: 4636869 (1987-01-01), Tomohisa et al.

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