Invention Grant
- Patent Title: Speaker protection circuit with improved accuracy
- Patent Title (中): 扬声器保护电路，精度提高
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Application No.: US14579756Application Date: 2014-12-22
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Publication No.: US09473851B2Publication Date: 2016-10-18
- Inventor: Sherif Galal , Xinwang Zhang
- Applicant: QUALCOMM, Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Loza & Loza LLP
- Main IPC: H04R3/00
- IPC: H04R3/00 ; H03G11/00 ; H03G3/20 ; H03F1/52 ; H03F3/185 ; H03F3/217 ; H04R29/00
Abstract:
In one embodiment, a method for speaker operation comprises sensing an input common mode signal of a driver, wherein the driver drives a speaker, and adjusting the input common mode signal of the driver based on a difference between the sensed input common mode signal and a reference signal. The method also comprises sensing a current of a coil of the speaker, and control an output volume of the speaker based at least in part on the sensed current.
Public/Granted literature
- US20160182998A1 SPEAKER PROTECTION CIRCUIT WITH IMPROVED ACCURACY Public/Granted day:2016-06-23
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