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:
Mar. 16, 2004
Filed:
Oct. 23, 2000
Peter Weinholz, Kiel, DE;
Eike Siemsen, Kiel, DE;
Heidelberger Druckmaschinen AG, Heidelberg, DE;
Abstract
A method for compressing digital image data present as matrix of M×N pixels, to a reduced data set, includes dividing the matrix of M×N pixels into blocks of u×v pixels, classifying the blocks of u×v pixels into blocks containing only pixels of one block color or single-color blocks, blocks containing pixels of a foreground color and pixels of a background color or two-color blocks, and blocks containing pixels with more than two colors or multicolor blocks, and coding, in the image data of the single-color blocks and the two-color blocks, by command code words and data words, pixel patterns which are repeated in at least one manner selected from the group consisting of from block to block and within a block, respectively.