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. 03, 2013
Filed:
Mar. 07, 2012
Applicants:
Koji Asami, Tokyo, JP;
Yasuo Furukawa, Tokyo, JP;
Inventors:
Koji Asami, Tokyo, JP;
Yasuo Furukawa, Tokyo, JP;
Assignee:
Advantest Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A test apparatus configured to test an N-bit (N represents an integer) A/D converter is provided. A voltage generating unit outputs a 2-valued analog voltage to the A/D converter. A capture unit captures an output code of the A/D converter for each level. A signal processing unit compares the output code captured for each level with the corresponding expected value code, corrects the value of the analog voltage for each level based upon the comparison result, and outputs the corrected analog voltage to the voltage generating unit.