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:
Feb. 05, 2013
Filed:
Jan. 17, 2012
Hsin-chia Su, Tainan, TW;
Hsin-Chia Su, Tainan, TW;
Himax Technologies Limited, Tainan, TW;
Abstract
A differential charge pump circuit including a common mode bias unit, a first single-ended charge pump unit, and a second single-ended charge pump unit is provided. The common mode bias unit provides a differential signal to a low pass filter. The first single-ended charge pump unit provides a first current to the common mode bias unit or sinks the first current from the common mode bias unit via the first terminal based on an up signal and a down signal. The second single-ended charge pump unit provides a second current to the common mode bias unit or sinks the second current from the common mode bias unit via the second terminal based on the up signal and the down signal. The first and the second single-ended charge pump units respectively charge or discharge the first and the second terminals of the common mode bias unit.