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. 31, 2021
Filed:
Apr. 11, 2018
Robert Bosch Gmbh, Stuttgart, DE;
Fabian Hoffmeister, Schoenau, DE;
Gregor Sauer, Straubing, DE;
Josef Plager, Bogen, DE;
Markus Mandl, Steinach Agendorf, DE;
Thomas Stein, Wald, DE;
Patrick Engl, Rattiszell, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to a method for operating a class-D amplifier () for an audio signal (), which class-D amplifier contains an output stage () and a signal-processing unit () in a signal path (), wherein a voltage (U) of at least two magnitudes (U, U) is provided for the output stage (), a voltage requirement (B) of the output stage () for the audio signal () is predictively determined from the audio signal () at a measurement location () before the signal-processing unit (), a magnitude (U, U) that is minimally sufficient for the voltage requirement (B) is selected on the basis of the voltage requirement (B) and said magnitude is applied to the output stage () before the amplification. A class-D amplifier () for an audio signal (), having a signal path (), which has an output stage () and a signal-processing unit (), contains a voltage source () for the output stage () having a voltage (U) of at least two magnitudes (U, U), a measurement location () before the signal-processing unit (), and a control and evaluation unit () for predictively determining a voltage requirement (B) for the output stage () for the proper amplification of the audio signal () from the audio signal () at the measurement location (), wherein the control and evaluation unit () selects a magnitude (U, U) that is minimally sufficient for the voltage requirement (B) on the basis of the voltage requirement (B) and applies said magnitude to the output stage () before the amplification.