Facsimile and static presentation processing – Static presentation processing – Attribute control
Reexamination Certificate
2007-12-25
2007-12-25
Lee, Thomas D. (Department: 2625)
Facsimile and static presentation processing
Static presentation processing
Attribute control
C358S003130, C358S003030
Reexamination Certificate
active
10387424
ABSTRACT:
In an image processing apparatus which performs an error diffusion process to multivalued image data consisting of plural density components and outputs a result of the error diffusion process, the process result from a first error diffusion unit performing the error diffusion process based on a density value of a first density component included in the plural density components or the process result from a second error diffusion unit performing the error diffusion process based on the density value of the first density component and a density value of at least one density component included in other density components is selected according to a predetermined condition. Thus, even in an image process is performed to a larger number of gradations, a high-speed process can be achieved with simple structure, and the error diffusion process can be effectively performed to a shift of dot apply positions.
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Hirabayashi Hiromitsu
Imafuku Kazuya
Kato Masao
Yamada Akitoshi
Yano Kentaro
Brinich Stephen
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Lee Thomas D.
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