Image processing apparatus for changing the resolution upon rota

Details Image processing apparatus for changing the resolution upon rota Image processing apparatus for changing the resolution upon rota

1994-05-24

1996-05-28

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358296, 358449, 358451, 382297, 382298, H04N 140

Patent

active

055217206

ABSTRACT:
An image processing apparatus having a function for rotating image data stored in a memory by 90.degree. while preventing deterioration of image quality. Upon image reading, if the line density in a subscanning direction is lower than the pixel density in a main-scanning direction, the line density is raised close to the pixel density. The reading control is performed in accordance with possibility of 90.degree. rotation of image in a destination apparatus or a specific size of an original image. This attains efficient use of image memory.

REFERENCES:
patent: 4829586 (1989-05-01), Motegi
patent: 5038218 (1991-08-01), Matsumoto
patent: 5068904 (1991-11-01), Yamazaki
patent: 5068905 (1991-11-01), Hackett et al.
patent: 5075784 (1991-12-01), Momose
patent: 5220431 (1993-06-01), Yamagguchi
patent: 5293432 (1994-03-01), Gonser et al.
patent: 5327256 (1994-07-01), Kang et al.

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