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. 12, 1985
Filed:
Sep. 03, 1982
Applicant:
Inventor:
Steven Leininger, Arlington, TX (US);
Assignee:
Tandy Corporation, Fort Worth, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
340721 ; 340711 ; 340750 ; 340745 ; 340734 ;
Abstract
In a computer system operating under read only memory control and having a keyboard, a video terminal, and a port device in the form of a tape recorder/player, an improved apparatus for alpha-numeric/graphic display in which the outputs of respective character and graphic generators couple to respective first and second shift registers with the shift registers being controlled by first and second gate means in a manner to enable clocking of the first shift register when the type code indicates alpha-numeric display and enabling clocking of the second shift register when the type code indicates graphic display.