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. 31, 1985
Filed:
Sep. 29, 1982
Applicant:
Inventors:
Kevin C McDonough, Houston, TX (US);
David S Laffitte, Houston, TX (US);
John M Hughes, Spring, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
340798 ; 340799 ; 340750 ;
Abstract
A video display system employs a memory arrangement for the video data which is sequentially accessed for serial read-out of the bit-mapped video information at a high clock rate, and also randomly accessed in parallel by a microcomputer for generating and updating the information to be displayed. Parallel access to the memory by the microcomputer can occur while the serial video data is being clocked out, so microcomputer I/O and video output conflict only a very minimum amount. Dynamic MOS RAMs with a serial register added provide this dual port memory.