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:
Jun. 23, 2015
Filed:
Nov. 07, 2012
Wistron Corporation, New Taipei, TW;
Wistron Corporation, Hsichih, New Taipei, TW;
Abstract
A speaker control system includes a speaker; an audio amplifier electrically connected to the speaker and used for driving the speaker, the audio amplifier having a shutdown pin and a reference voltage input pin; a switch circuit, a first end of the switch circuit being electrically connected to the shutdown pin and a second end of the switch circuit being connected to the reference voltage input pin; and a processor electrically connected to the shutdown pin and the first end, when the processor outputs a first voltage signal, the audio amplifier being enabled and the reference voltage input pin being kept at a reference voltage, when the processor outputs a second voltage signal, the audio amplifier being disabled and the switch circuit switching the reference voltage input pin from the reference voltage to a low voltage level.