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:
Oct. 23, 1990
Filed:
Jan. 26, 1988
Applicant:
Inventor:
Etienne L van Dorsselaer, Sintjansteen, NL;
Assignee:
OCE Nederland B.V., Venlo, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
382 50 ; 358429 ; 358457 ; 382 56 ;
Abstract
Coding of digital data corresponding to a dithered image. The digital pixel values determined by comparison with a given threshold value of the dither matrix are combined to form a string. A string of this kind is formed for all the threshold values of the dither matrix. Strings found which are built up largely of a given pixel value are immediately converted into strings built up entirely of that pixel value, and are coded collectively. The other strings found are coded individually by comparing each of them with a set of standard strings and replacing them by the most similar standard string.