Electronic device, electronic system, and method for processing signals from an audio accessory thereof
US8620004B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2010 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Mar 27, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2420/09
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electronic device includes an audio jack, a power supply unit, a determining circuit, and an executing circuit. The audio jack may be arranged for transmitting an audio input signal, and the electronic device may be configured to connect with an audio accessory via the audio jack. When the audio accessory may be connected to the electronic device, the power supply unit provides a first voltage to the audio jack and a second voltage. The determining circuit determines whether to trigger an interrupt request according to the second voltage and a third voltage, wherein the third voltage may be coupled to the audio jack and may be generated according to the first voltage. The executing circuit may be coupled to the determining circuit, for determining whether to execute a corresponding function according to the third voltage when the interrupt request may be received.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.