Image processing apparatus

Details Image processing apparatus Image processing apparatus

2008-01-22

2008-01-22

Tran, Douglas Q. (Department: 2625)

Facsimile and static presentation processing

Facsimile

Picture signal generator

C358S473000, C358S501000, C358S001150, C358S001120, C358S451000, C382S298000, C382S112000, C382S299000

Reexamination Certificate

active

07321452

ABSTRACT:
An object of the invention is to enable appropriate interpolation even in a halftone image binarized by error diffusion or the like. While image reading signals from a hand scanner are inputted to an A/D conversion section and converted to multivalued digital signals, the presence or absence of a skip is detected by a skip acknowledgement section, and when a skip is detected, a selector is switched toward a multivalued image line buffer. Multivalued image data of one line is stored in the multivalued image line buffer, and interpolation processing is carried out in a binarization processing section by the use of the stored multivalued image data of one line. When a skip is not detected, the multivalued image data from the A/D conversion section is passed by the selector to the binarization processing section and binarized.

REFERENCES:
patent: 5764611 (1998-06-01), Watanabe
patent: 6011878 (2000-01-01), Ushida et al.
patent: 6271933 (2001-08-01), Asai et al.
patent: 6591396 (2003-07-01), Honda
patent: 6898329 (2005-05-01), Takahashi
patent: 6930808 (2005-08-01), Otani
patent: 2003/0176768 (2003-09-01), Gono et al.
patent: 2001-186362 (2001-07-01), None

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