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:
Jan. 20, 2009
Filed:
Sep. 28, 2006
Applicants:
Kalyana C. Vullaganti, Dallas, TX (US);
Jeffery Scott Hunt, Ackerman, MS (US);
Inventors:
Kalyana C. Vullaganti, Dallas, TX (US);
Jeffery Scott Hunt, Ackerman, MS (US);
Assignee:
Cypress Semiconductor Corporation, San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K 17/16 (2006.01); H03K 19/003 (2006.01);
U.S. Cl.
CPC ...
Abstract
A variable impedance sense (VIS) circuit () can detect and store an input offset value inherent in a sensing loop (and/or). According to a detected input offset polarity, a resulting impedance matching binary code can be adjusted to compensate for error that can be introduced by the input offset. The binary code can also be adjusted to compensate for additional error that can be introduced by dropping a least significant bit (LSB) of the code to reduce noise effects caused by the switching of the LSB.