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:
Apr. 26, 1994
Filed:
Sep. 06, 1991
Applicant:
Inventor:
Paul M Urbanus, Dallas, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
340189 ; 345196 ; 345200 ;
Abstract
A frame buffer for a spatial light modulator in a image display system. The frame buffer is comprised of video random access memory devices (VRAM's) having sections of VRAM rows that receive a value from one bit position of all display rows. An allocation circuit provides addresses for filling said VRAM rows when data is being written to the frame buffer, updates an address memory as VRAM rows are emptied, and provides addresses for mapping VRAM rows to display rows of the spatial light modulator when data is being read out of the frame buffer.