Title:
CONTROL DEVICE FOR EARPHONES AND WIRED EARPHONES
Document Type and Number:
WIPO Patent Application WO/2019/196054
Kind Code:
A1
Abstract:
Provided are a control device for earphones and wired earphones. The control device comprises: a voltage protection circuit; when earphones are inserted into a terminal device, the voltage protection circuit is connected to a power supply end of the terminal device by means of a microphone end of the earphones, and the voltage protection circuit is used to receive the voltage outputted by the power supply end by means of the microphone end and output a first voltage, the voltage outputted by the power supply end being greater than or equal to the first voltage. In an embodiment of the present invention, by means of internally providing a voltage protection circuit for earphones, a back end circuit of the earphones may be prevented from being damaged when the voltage outputted by a power supply end of a terminal device is too great.
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Inventors:
DUAN HONGLIANG (CN)
YANG WANGWANG (CN)
LIU CHANG (CN)
YANG WANGWANG (CN)
LIU CHANG (CN)
Application Number:
PCT/CN2018/082795
Publication Date:
October 17, 2019
Filing Date:
April 12, 2018
Export Citation:
Assignee:
SHENZHEN GOODIX TECH CO LTD (CN)
International Classes:
H04R1/10
Foreign References:
| CN105246002A | 2016-01-13 | |||
| CN106165243A | 2016-11-23 | |||
| CN102983756A | 2013-03-20 | |||
| CN105229737A | 2016-01-06 | |||
| US20170296077A1 | 2017-10-19 |
Attorney, Agent or Firm:
LONGSUN LEAD IP LTD. (CN)
Download PDF:
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