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. 10, 2017
Filed:
Nov. 25, 2015
Applicant:
Teradyne, Inc., North Reading, MA (US);
Inventor:
Marc Spehlmann, North Reading, MA (US);
Assignee:
Teradyne, Inc., North Reading, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 27/26 (2006.01); G01B 7/02 (2006.01); G01D 5/24 (2006.01); G01R 31/319 (2006.01); H03K 17/955 (2006.01); G06K 9/00 (2006.01);
U.S. Cl.
CPC ...
G01B 7/02 (2013.01); G01D 5/24 (2013.01); G01R 27/2605 (2013.01); G01R 31/3191 (2013.01); G01R 31/31901 (2013.01); G01R 27/26 (2013.01); G06K 9/0002 (2013.01); H03K 17/955 (2013.01);
Abstract
An example process for determining electrical path lengths includes: injecting current into a transmission line having a known capacitance per unit of length; determining a rate of change in voltage on the transmission line in response to the current; determining a capacitance of the transmission line based on the change in voltage; and determining an electrical path length of the transmission line based on the determined capacitance of the transmission line and the known capacitance per unit of length.