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:
Mar. 13, 2007
Filed:
Jul. 06, 2006
Masaru Doi, Tokyo, JP;
Masaru Doi, Tokyo, JP;
Advantest Corporation, Tokyo, JP;
Abstract
A method for calibrating a timing clock is provided. The method includes the steps of calibrating a shift amount of an edge of a shift clock by using a period of the timing clock as a reference by detecting an edge of the timing clock more than once while changing the shift amount of the edge of the shift clock; shifting and generating the edge of the shift clock by a predetermined shift amount by the calibrated shift clock generating section; and calibrating a required delay amount for delaying the timing clock by time corresponding to the predetermined shift amount by detecting the edge of the shift clock shifted by the predetermined amount while changing a delay amount of the timing clock.