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. 28, 2010
Filed:
Jun. 25, 2009
Ching-chung Lee, Tainan County, TW;
Ching-Chung Lee, Tainan County, TW;
Himax Technologies Limited, Sinshih Township, Tainan County, TW;
Abstract
An embodiment of a digital to analog converter (DAC) with two outputs is provided. The DAC is controlled by an n-bits input signal and comprises a reference voltage circuit generating (2n+1) reference voltages, a first switch array and a second switch array. The first switch array receives and outputs 2selected reference voltages among the (2+1) reference voltages to the second switch array. The second switch array outputs a first voltage via a first output terminal and a second voltage via a second output terminal according to the input signal, wherein the (2+1)th reference voltages are directly transmitted to the second switch array, and when the first bit of the input signal is at a first voltage level, the first voltage is transmitted to the second output terminal, and the second voltage is transmitted to the first output terminal.