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:
Mar. 27, 2012
Filed:
Oct. 12, 2009
Applicants:
Chiao-wei Hsiao, Taichung, TW;
Sih-ting Wang, Kaohsiung County, TW;
Tung-cheng Hsin, Hsinchu, TW;
Inventors:
Assignee:
NOVATEK Microelectronics Corp., Hsinchu Science Park, Hsin-Chu, TW;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K 17/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
An impedance adjustment circuit for adjusting a terminal resistance includes a resistance evaluation unit and a terminal resistor unit. The resistance evaluation unit is utilized for evaluating a ratio of an off-chip resistor and a basic resistor to generate a control signal by a successive approximation method. The terminal resistor unit is coupled to the resistance evaluation unit, and is utilized for deciding a number of shunt basic resistors to provide a matched terminal resistance according to the control signal.