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. 30, 2009
Filed:
Mar. 14, 2005
David R. Baum, Tucson, AZ (US);
Frank Haupt, Tucson, AZ (US);
Jerry L. Doorenbos, Tucson, AZ (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A gamma reference voltage generator (B) for an LCD display includes a control interface logic circuit () having an output bus coupled to inputs of a first register () having outputs coupled to inputs of a second register () the outputs of which are coupled to corresponding inputs of plurality of DACs (). The control interface logic circuit receives gray scale codes representative of gamma reference voltages and transfers the codes via the output bus into the first register and controls further transfer of the codes to inputs of the DACs to instantaneously or rapidly update gamma correction voltages applied to the LCD display.