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:
Aug. 12, 1980
Filed:
Dec. 11, 1978
Applicant:
Inventors:
David Roe, Romsey, GB;
Brian R Sowter, Winchester, GB;
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
340703 ; 340750 ; 340799 ; 340801 ;
Abstract
Mixed color effects in a character graphics display system are achieved by providing font characters comprising several character cells with different patterns which can selectively be read simultaneously to different color registers, thereby determining the color in which each character cell is to be displayed. The system also provides characters comprising only a single character cell which can selectively be directed to any of the color registers. A control system interprets color bits in a control word in accordance with the type of character being accessed.