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. 17, 2013
Filed:
Dec. 19, 2008
Frank Haupt, Nuertingen, DE;
David R. Baum, Tucson, AZ (US);
Frank Haupt, Nuertingen, DE;
David R. Baum, Tucson, AZ (US);
Texas Instruments Deutschland GmbH, Freising, DE;
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
Gamma curve correction circuitry includes first (-) and second (-) groups of gamma correction buffers and corresponding DACs (-). Each buffer has an input coupled to an output of a corresponding DAC, respectively, and an output coupled by a corresponding output conductor, respectively, to a corresponding resistor string tap point. A midrange voltage (V) is produced with a value approximately midway between a first voltage (V) and a second voltage (GND) and is coupled to provide power to the first and second groups of buffers. The first voltage is coupled to a first voltage terminal of a first buffer (-) of the first group. A second voltage terminal of the first buffer is coupled to the midrange voltage. The midrange voltage is coupled to a first voltage terminal of a first buffer (-) of the second group. A second voltage terminal of the first buffer of the second group is coupled to the second voltage.