Error diffusion processing circuit for an image signal which...

Details Error diffusion processing circuit for an image signal which... Error diffusion processing circuit for an image signal which...

2008-03-04

2008-03-04

Lee, Thomas D. (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S003050, C382S252000

Reexamination Certificate

active

10437893

ABSTRACT:
An error diffusion processing circuit includes an error diffusion processing unit and a noise signal unit. The error diffusion processing unit generates a first output image signal of a first pixel by carrying out an error diffusion process, based on an inputted first input image signal of the first pixel. The number of gray tones of the first output image signal is smaller than that of the input image signal. The noise signal unit which generates a noise signal and outputs the noise signal to the error diffusion processing unit. The noise signal is inputted into a feedback loop of the error diffusion process.

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