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:
Dec. 04, 1990
Filed:
Aug. 04, 1989
Applicant:
Inventor:
Sherwood Kantor, Boulder, CO (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
353447 ; 353463 ;
Abstract
Enhancement of text characters when converted to a higher resolution without degrading imbedded halftone images. Enhancement at the higher resolution is determined by comparing predetermined patterns to individual lower resolution pels and surrounding pels. The predetermined patterns are selected as occurring in text data and not in half-tone images according to the rules described.