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:
Jan. 09, 2007
Filed:
Oct. 24, 2002
Applicant:
Mamoru Tamba, Tokyo, JP;
Inventor:
Mamoru Tamba, Tokyo, JP;
Assignee:
Agilent Technologies, Inc., Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and low cost apparatus to accurately determine the gain, offset, and/or skew calibration values of each A/D converter in a few steps for an interleaving A/D converter. The calibration method includes: applying sine waves to the input as a calibration signal during calibration, A/D converting of the sine wave by a plurality of A/D conversion means in a predetermined order and storing the converted data in a data storage memory, and determining the gain, offset, and/or skew calibration values by using sine curve fitting on a sequence of converted data for each of the plurality of A/D conversion means.