Method and electronic device for determining headset line sequence
US9161124B2 · kind B2 · utility
1Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2013 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | Jan 10, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2420/05
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and an electronic device for determining headset line sequence are disclosed in this application, where a third pin and a fourth pin on a headset plug are connected to a direct-current power supply to form a power supply branch, and a bias resistor is connected onto the power supply branch in series. This application obtains a second voltage between the third pin and the fourth pin, compares the second voltage with a preset first threshold, and according to a comparison result, determines a signal type of a signal transmitted by the third pin and a signal type of a signal transmitted by the fourth pin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.