Headphone with speaker function
US9002026B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 21, 2011 |
| Grant date | Apr 7, 2015 |
| Priority date | — |
| Expiry date | Dec 12, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2430/01
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A headphone with speaker function comprises a first playback unit, a second playback unit, a first audio source interface and a second audio source interface. Both the first playback unit and the second playback units have a speaker respectively. The first audio source interface is disposed on the first playback unit and is electrically connected to the two speakers simultaneously, while the second audio source interface can be disposed on the first playback unit or the second playback unit, and is electrically connected to the two speakers simultaneously via an amplifier circuit. From an external audio interface, an audio signal is transmitted to the headphone via the first audio source interface; at this moment, the headphone set is operated under a headphone mode. From an external audio interface, an audio signal is transmitted via the second audio source interface; at this moment, the headphone is operated under a speaker mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.