Portable device and method for entering power-saving mode
US9998815B2 · kind B2 · utility
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0References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2015 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | Nov 16, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A portable device and a method for entering a power-saving mode are provided. An audio signal is transmitted to an earphone via a cable. At least one electrical characteristic on the cable is sensed to generate at least one sensing signal. The at least one sensing signal is sampled to generate at least one data signal. Whether the earphone is in listening position is determined according to the at least one data signal. When it is determined that the earphone is not in listening position, the portable device enters a power-saving mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.