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. 25, 2011
Filed:
Mar. 27, 2007
Lucien J. M. Breems, Eindhoven, NL;
Robert Rutten, Uden, NL;
Hendrik Van Der Ploeg, Waalre, NL;
NXP B.V., Eindhoven, NL;
Abstract
An analog to digital conversion circuit comprises a first digital noise cancellation filter () configured to provide a signal to cancel quantization noise from an analog to digital converted output signal. In a calibration phase a second digital noise cancellation filter () is has an input coupled to an input of the first digital noise cancellation filter (). Mutually different sets of at least one-filter coefficients are programmed in the first and second digital noise canceling filters (). A difference is computed of averaged size indications of digital output signals derived using signals from the first and second digital noise cancellation filters () using the same input signal. Updates of the sets of at least one filter coefficients are adapted dependent on the difference between the averaged size indications.