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:
Jul. 05, 2016
Filed:
Jun. 30, 2015
Stmicroelectronics (Shenzhen) R&d Co., Ltd., Shenzhen, CN;
Stmicroelectronics S.r.l., Agrate Brianza, IT;
Xiangsheng Li, Shenzhen, CN;
Cristiano Meroni, Milan, IT;
Mei Yang, Shenzhen, CN;
Xian Feng Xiong, Shenzhen, CN;
STMICROELECTRONICS (SHENZHEN) R&D CO. LTD., Shenzhen, CN;
STMICROELECTRONICS S.R.L., Agrate Brianza (MB), IT;
Abstract
A method of operating a speaker system including a speaker coupled to an amplifier, and a dedicated digital speaker protection circuit includes turning on the amplifier in a mute mode, after a first delay period, issuing a play command to the amplifier to place the amplifier in a play mode, but without an input signal during a second delay period, and performing a speaker offset detection during the second delay period, wherein, if there is an offset, then the amplifier is forced back into the mute mode, and if there is no offset, then the amplifier is allowed to continue to operate in the play mode. The method also includes issuing a speaker protection control signal or command if an offset is detected.