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. 17, 2013
Filed:
Jul. 06, 2010
Yasuo Furukawa, Saitama, JP;
Yasuo Furukawa, Saitama, JP;
Advantest Corporation, Tokyo, JP;
Abstract
A probe circuit is provided in an electronic device that includes a circuit which is under test and outputs a response signal corresponding to an input signal in synchronization with an operation clock. The probe circuit includes a sampling clock supplying section that outputs a sampling clock having a predetermined frequency, and a sampling section that outputs, outside the electronic device, a probe output signal of which frequency is lower than a frequency of the response signal and which corresponds to a sampling result obtained by sampling the response signal using the sampling clock. The response signal has a prescribed signal pattern repeated with a predetermined recurrence period, and the sampling clock supplying section outputs the sampling clock of which relative phase with respect to the signal pattern sequentially changes in each recurrence period.