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:
Nov. 08, 2005
Filed:
Apr. 08, 2002
Somei Kawasaki, Saitama, JP;
Masami Iseki, Kanagawa, JP;
Hiroyuki Maru, Kanagawa, JP;
Fujio Kawano, Tokyo, JP;
Somei Kawasaki, Saitama, JP;
Masami Iseki, Kanagawa, JP;
Hiroyuki Maru, Kanagawa, JP;
Fujio Kawano, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A pixel modulation apparatus for converting pixel data D composed of Nbits to a pixel data signal composed of one bit. The pixel data D is input into the apparatus at a pixel period T. The apparatus includes a first data conversion unit which converts the pixel data D to pixel data Dexpanded to Nbits (N>N) at the period T, a second data conversion unit which converts the pixel data Dto pixel data Dcomposed of N/m bits at a period T/m, a third data conversion unit which inputs n data from among the pixel data Dand pixel data Ddconstituting the pixel data Dbefore having the period T/m to execute logical sum operations a predetermined number (equal to or less than n) of times to convert the n data to pixel data Dcomposed of Nbits, including additional data corresponding to the predetermined number, and a fourth data conversion unit which converts the pixel data Dto the pixel data signal composed of one bit at the period T/m.