The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 12, 2011
Filed:
Apr. 02, 2007
Ayako Uji, Kawasaki, JP;
Yoshitomo Marumoto, Yokohama, JP;
Daigoro Kanematsu, Yokohama, JP;
Yoshinori Nakajima, Yokohama, JP;
Eiji Komamiya, Kawasaki, JP;
Ayako Uji, Kawasaki, JP;
Yoshitomo Marumoto, Yokohama, JP;
Daigoro Kanematsu, Yokohama, JP;
Yoshinori Nakajima, Yokohama, JP;
Eiji Komamiya, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A data processing apparatus uses a pattern table arranging binarizing patterns correspondingly to positions of a pixel, each of which is used for a binarization process in which an arrangement of a number of dots depending on a value of multi-valued image data corresponding to the pixel is determined, to select the binarizing pattern depending on the position of the pixel and on the value of multi-valued image data corresponding to the pixel for executing the binarization process. The pattern table corresponding to one of the values to be taken by the multi-valued image data includes a plurality of types of binarizing patterns which determine different arrangements of dots from each other. The arrangement of each of the plurality of types of binarizing patterns in the pattern table corresponding to the one value has a characteristic that the arrangement is aperiodic and that low frequency components are fewer than high frequency components.