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. 18, 2011
Filed:
Sep. 30, 2009
Applicant:
Ivan Carlos Ribeiro DO Nascimento, Campinas, BR;
Inventor:
Ivan Carlos Ribeiro do Nascimento, Campinas, BR;
Assignee:
Freescale Semiconductor, Inc., Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 27/26 (2006.01); H03K 3/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
Systems and methods are provided for determining the value of a capacitance. A system for sensing capacitance comprises an oscillator arrangement comprising a plurality of oscillators and a mismatch compensation arrangement coupled between the oscillator arrangement and a first capacitive element having a first capacitance. The mismatch compensation arrangement is configured to selectively couple the first capacitive element to a respective oscillator of the plurality of oscillators, wherein an oscillation frequency of the respective oscillator is influenced by the first capacitance.