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:
Aug. 12, 2003
Filed:
Mar. 26, 2002
Applicant:
Inventor:
Petrus Antonius Thomas Marinus Vermeeren, Eindhoven, NL;
Assignee:
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 1/02 ;
U.S. Cl.
CPC ...
H03F 1/02 ;
Abstract
A balanced transformer-less amplifier includes a system for detecting and correcting DC offset across the output terminals of the amplifier. The output signal is digitized, counted during a predetermined period, and the result of the counting is used to derive a DC correction signal which is fed back to the input of the amplifier.