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. 20, 2011
Filed:
May. 08, 2008
Applicant:
Masahiko Mizuta, Sapporo, JP;
Inventor:
Masahiko Mizuta, Sapporo, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 5/228 (2006.01); H04N 3/14 (2006.01); H04N 5/217 (2011.01); H04N 1/40 (2006.01); H03M 1/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
An analog front-end circuit includes an analog processing circuit, an A/D converter, a calculation circuit, and a correction amount register in which a correction amount is set. The analog processing circuit includes an offset adjustment circuit that includes an offset adjustment register. The calculation circuit monitors an A/D-converted value output from the A/D converter, detects the change amount of the A/D-converted value when changing an offset adjustment value set in the offset adjustment register by 1 LSB as the correction amount, and sets the detected correction amount in the correction amount register.