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:
May. 27, 2008
Filed:
Oct. 28, 2005
Applicant:
Fang Xu, Newton, MA (US);
Inventor:
Fang Xu, Newton, MA (US);
Assignee:
Teradyne, Inc., North Reading, MA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 27/28 (2006.01); G01R 25/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A time of an event can be determined by acquiring an amplitude, at the time of the event, of at least two periodic timing signals that are out of phase with each other. The time of the event within a cycle of at least one of the timing signals can be determined as a function of the amplitudes of the timing signals. The phase angle and complex coordinates of at least one of the timing signals can be determined as a function of the amplitudes. The time of the event within a cycle of a timing signal can be determined as a function of the phase angle or complex coordinates of the timing signal at the time of the event.