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:
Oct. 17, 2006
Filed:
Aug. 11, 2005
Toshiaki Awaji, Tokyo, JP;
Takashi Sekino, Tokyo, JP;
Toshiaki Awaji, Tokyo, JP;
Takashi Sekino, Tokyo, JP;
Advantest Corporation, Tokyo, JP;
Abstract
There is provided a differential comparator circuit that is mounted on a test apparatus for testing a device under test outputting differential signals including noninverted signals and inverted signals. The differential comparator circuit includes: a difference signal subtracting circuit operable to compute and output a difference signal indicative of a difference between the noninverted signal and the inverted signal; a first threshold value subtracting circuit operable to compute and output a first threshold voltage indicative of a difference between a first comparative voltage generated based on ground potential of the device under test and a reference voltage generated based on the ground potential of the device under test; and a first comparing circuit operable to compare the difference signal and the first threshold voltage to output a comparison result.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile