Invention Grant
US09357285B2 Earphone detecting circuit and portable electronic device using the same
有权
耳机检测电路和便携式电子设备使用相同
- Patent Title: Earphone detecting circuit and portable electronic device using the same
- Patent Title (中): 耳机检测电路和便携式电子设备使用相同
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Application No.: US13923397Application Date: 2013-06-21
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Publication No.: US09357285B2Publication Date: 2016-05-31
- Inventor: Chun-Hua Wu
- Applicant: Chi Mei Communication Systems, Inc.
- Applicant Address: TW New Taipei
- Assignee: Chi Mei Communication Systems, Inc.
- Current Assignee: Chi Mei Communication Systems, Inc.
- Current Assignee Address: TW New Taipei
- Agency: Novak Druce Connolly Bove + Quigg LLP
- Priority: TW101126886A 20120726
- Main IPC: H04R1/10
- IPC: H04R1/10 ; H04R29/00
Abstract:
An exemplary earphone detecting circuit includes a signal input terminal, a voltage dividing circuit, a detecting circuit, and a signal output terminal connected electronically in that order. The signal input terminal is connected to an earphone jack of a portable electronic device. The signal output terminal is connected to a microcontroller of the portable electronic device. When the portable electronic device receives a call, the signal input terminal receives a signal and transmits the received signal to the detecting circuit through the voltage dividing circuit, the detecting circuit processes the signal transmitted to the signal output terminal to be constant.
Public/Granted literature
- US20140029759A1 EARPHONE DETECTING CIRCUIT AND PORTABLE ELECTRONIC DEVICE USING THE SAME Public/Granted day:2014-01-30
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