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:
Apr. 05, 2016
Filed:
Apr. 10, 2013
Applicant:
Nxp B.v., Eindhoven, NL;
Inventors:
Klaus Reimann, Eindhoven, NL;
Twan van Lippen, Bladel, NL;
Remco Henricus Wilhelmus Pijnenburg, Hoogeloon, NL;
Iris Bominaar-Silkens, Valkenswaard, NL;
Robert Hendrikus Margaretha van Veldhoven, Dommelen, NL;
Assignee:
NXP, B.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 3/02 (2006.01); G01L 9/12 (2006.01); G01P 15/125 (2006.01); G01D 5/24 (2006.01);
U.S. Cl.
CPC ...
H04R 3/02 (2013.01); G01D 5/24 (2013.01); G01L 9/12 (2013.01); G01P 15/125 (2013.01);
Abstract
A read out circuit for a sensor uses a feedback loop to bias the sensor to a desired operating point, such as the maximal possible sensitivity, but without the problem of an instable sensor position as known for the conventional read-out with constant charge. The reference bias to which the circuit is controlled is also varied using feedback control, but with a slower response than the main bias control feedback loop.