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:
Jun. 11, 1996
Filed:
Jul. 29, 1992
Rudolf Enter, Kitchener, CA;
NCR Corporation, Dayton, OH (US);
Abstract
Within a document printing system, a dot generator for determining dot ON/OFF states for a multiple channel matrix print head includes a RAM memory in which is stored print characters received from the print system. The received print characters are stored in ASCII format in predetermined character box memory locations within the RAM memory. The dot generator further includes a ROM memory having (1) a first storage area containing an association table correlating each one of the dot print addresses or locations within the document print zone with one of the character box memory locations within the RAM memory; (2) a second storage area containing an association table correlating each one of the dot print locations with a character box print location row and column number; and (3) a third storage area containing dot state ON/OFF values corresponding to each row of each standard ASCII character. A ROM lookup procedure is utilized to determine the ON/OFF state for each dot location within the print zone. In brief, the dot generator performs the followings steps: