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:
Sep. 08, 2015
Filed:
Jun. 10, 2009
Martin Maier, Irlbach, DE;
Josef Taffner, Donaustauf, DE;
Josef Plager, Bogen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
Audio amplifiers are used in many known forms in music systems, for example for domestic use or for playing music in cinemas, discos etc., but also in public address systems, as are known, for example, in public buildings, schools, universities etc. for making announcements. The invention proposes an audio amplifier () for amplifying an input signal into an output signal using an output amplifier stage (), wherein the output amplifier stage () is designed to amplify an intermediate signal into the output signal, and wherein the output amplifier stage () is in the form of an amplifier which operates in switching mode, and having a limiter device () which is designed, from a program and/or circuit point of view, to generate the intermediate signal on the basis of the input signal, wherein the level of the intermediate signal is always limited as a function of an adjustable maximum level in such a way that the output signal does not exceed the maximum level independently of the input signal.