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. 17, 2008
Filed:
Jan. 28, 2004
Chao-hsuan Chuang, Jhubei, TW;
Jing-meng Liu, Hsinchu, TW;
Shin-lung Ho, Jhubei, TW;
Wen-hung Huang, Yangmei Township, Taoyuan County, TW;
Cheng-yuan Chang, Yonghe, TW;
Chao-Hsuan Chuang, Jhubei, TW;
Jing-Meng Liu, Hsinchu, TW;
Shin-Lung Ho, Jhubei, TW;
Wen-Hung Huang, Yangmei Township, Taoyuan County, TW;
Cheng-Yuan Chang, Yonghe, TW;
Richtek Technology Corp., Hsinchu, TW;
Abstract
In a gamma voltage generator and gamma voltage generating method that can tune the gamma voltages individually, several gamma currents of a same magnitude are generated for each to flow through a variable resistive element to generate a variable common voltage and several variable voltages, from which a common gamma voltage and several first gamma voltages are generated. By use of the symmetric property of the gamma curve corresponding to those gamma voltages to be generated, several voltages are generated by mapping the first gamma voltages with the common gamma voltage as the center axis, and from which several second gamma voltages are derived. The common gamma voltage and the first and second gamma voltages are provided for those gamma voltages corresponding to the gamma curve.