Image processing apparatus for converting image data by unit...

Details Image processing apparatus for converting image data by unit... Image processing apparatus for converting image data by unit...

2003-03-14

2008-05-20

Rogers, Scott A. (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S003060, C358S003230

Reexamination Certificate

active

07375855

ABSTRACT:
The technique of the invention joins a preset number of adjacent pixels into a unit and collectively converts input image data of each unit into dot data. Here the image data is expressed by tone values of respective pixels constituting an image, and the dot data represents dot on-off state. The technique stores dot on-off state determined with regard to at least part of pixels included in a processed unit, which has been subjected to the data conversion, in such a manner that a pixel position in the processed unit is identifiable. The procedure of the data conversion by units specifies a target pixel, in which a dot on-off state is to be determined, in a unit, detects a dot creation status with regard to an object pixel that is located at a specific position relative to the target pixel, and determines the dot on-off state in the target pixel based on the detection result. This arrangement effectively prevents the picture quality of a resulting image from being worsened by conversion of the image data into the dot data by units.

REFERENCES:
patent: 6870641 (2005-03-01), Kakutani
patent: 7164503 (2007-01-01), Kakutani
patent: 7268919 (2007-09-01), Katsuyama
patent: 2002/0089685 (2002-07-01), Kakutani
patent: 2006/0181737 (2006-08-01), Kakutani
patent: 2007/0171439 (2007-07-01), Kakutani
patent: 2002-185789 (2002-06-01), None
Abstract of Japanese Patent Publication No. 2002-185789, Pub. Date: Jun. 28, 2002, Patent Abstracts of Japan.

Affiliated with

Also associated with

Rating

Image processing apparatus for converting image data by unit... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image processing apparatus for converting image data by unit..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image processing apparatus for converting image data by unit... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3983086