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:
May. 25, 2010
Filed:
Sep. 04, 2008
Chuan-che Lee, Sinshih Township, Tainan County, TW;
Jung-zone Chen, Sinshih Township, Tainan County, TW;
Chuan-Che Lee, Sinshih Township, Tainan County, TW;
Jung-Zone Chen, Sinshih Township, Tainan County, TW;
Himax Technologies Limited, Sinshih Township, Tainan County, TW;
Abstract
A digital to analog converter of the source driver includes a gamma voltage generator and a data decoder. The gamma voltage generator receives a gamma code to generate an analog gamma voltage. The gamma voltage includes a register, a reference decoder, and a calibrator. The register stores the gamma code. The reference decoder converts the gamma code from the register into the analog gamma voltage. The calibrator, receiving a reference gamma voltage in a calibration mode, includes a comparator and a counter, in which the counter tunes the gamma code according to the control signal generated by the comparator comparing the analog gamma voltage and the reference gamma voltage. The data decoder receives digital pixel data and selects one gamma voltage as a driving voltage based on the digital pixel data.