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. 23, 2008
Filed:
Sep. 12, 2005
Applicants:
William F. Ellersick, Sudbury, MA (US);
Jennifer A. Lloyd, North Andover, MA (US);
Daniel J. Mulcahy, Somerville, MA (US);
Inventors:
William F. Ellersick, Sudbury, MA (US);
Jennifer A. Lloyd, North Andover, MA (US);
Daniel J. Mulcahy, Somerville, MA (US);
Assignee:
Analog Devices, Inc., Norwood, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 35/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A system and method of calibration develops a function from which is generated a monotonic time response; a gating period is defined from the monotonic time response and any error in the frequency of a reference signal is determined during the gating period; from that error an error signal is generated for adjusting the time constant of a circuit to be calibrated.