Title:
AUDIO CONTROL SYSTEM FOR ELECTRONIC DEVICE AND CONTROL METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2014/012234
Kind Code:
A1
Abstract:
An audio control system for an electronic device and a control method thereof. The electronic device (300) is a component connected with an audio interface (1) of a cell phone, a tablet, and the like. The audio control system for an electronic device comprises a main controller (10) and an audio plug (200) connected with the main controller (10), the audio plug (200) at least comprises four contacts electrically contacting electrodes of the audio interface (1) correspondingly, the contacts are defined as a first contact, a second contact, a third contact, and a fourth contact sequentially along an insertion direction in which the audio plug is inserted, resistors (20) are connected on lines at which the first contact and the second contact are connected with the main controller (10) respectively, each resistor (20) is in short circuit connection with the line of each corresponding contact, and the first contact and the second contact are controlled by the main controller (10) to be used as audio output modules; one of the third contact and the fourth contact is used as a ground wire contact, and the other one of the third contact and the fourth contact is used as an audio input contact, and zero potentials are output to the ground wire contact by controlling the cell phone, the tablet, and the like. The audio plug (200) of the electronic device (300) can adapt to polarities of different audio interfaces (1) automatically.
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Inventors:
TSAI HWAI SIAN (CN)
Application Number:
PCT/CN2012/078879
Publication Date:
January 23, 2014
Filing Date:
July 19, 2012
Export Citation:
Assignee:
BBPOS LTD (CN)
TSAI HWAI SIAN (CN)
TSAI HWAI SIAN (CN)
International Classes:
H04R3/00
Foreign References:
| CN102780950A | 2012-11-14 | |||
| CN202759578U | 2013-02-27 | |||
| CN102395072A | 2012-03-28 | |||
| CN102438187A | 2012-05-02 | |||
| CN202310052U | 2012-07-04 | |||
| US8155337B2 | 2012-04-10 |
Attorney, Agent or Firm:
XIAMEN SHINHWA PATENT & TRADEMARK AGENCY CO., LTD. (CN)
厦门市新华专利商标代理有限公司 (CN)
厦门市新华专利商标代理有限公司 (CN)
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