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:
Sep. 01, 2009
Filed:
Sep. 25, 2007
Applicant:
Kenichi Minobe, Kawasaki, JP;
Inventor:
Kenichi Minobe, Kawasaki, JP;
Assignee:
Fujitsu Microelectronics Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
An analog-to-digital converter conventionally performing a detection of a differential offset is replaced by a comparator. A reference voltage is input to a terminal on one side of the comparatorand each of a pair of differentials of a differential voltage signal is input to the other terminal one by one. Then, a setup of voltages of both of the pair of differentials to closer values to the reference voltage makes both voltages of the pair of differentials eventually the same, thereby making it possible to correct a differential offset.