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:
Nov. 10, 2009
Filed:
Sep. 28, 2007
Yoshikazu Nakayama, Saitama, JP;
Yoshikazu Nakayama, Saitama, JP;
Advantest Corporation, Tokyo, JP;
Abstract
There is provided an error factor measurement device for measuring an error factor in a switch branch signal source including a signal source and a switch, and the error factor measurement device includes a reference error factor component recording unit which records respective components E, Eof a frequency tracking error factor when a predetermined output terminal is connected to a signal source, a derived error factor product recording unit which records an error factor product E×Ewhich is a product of respective components of a frequency tracking error factor when respective multiple output terminals other than predetermined output terminal are connected to the signal source, an error factor ratio deriving unit which derives an error factor ratio E/E, and a frequency tracking error factor deriving unit which derives E, Ebased on the error factor product and the error factor ratio, where E/E=E/Eholds.