Zero power drain pushbutton controls
US8841799B2 · kind B2 · utility
6Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2011 |
| Grant date | Sep 23, 2014 |
| Priority date | — |
| Expiry date | Jun 18, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2420/07
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A plurality of normally-open pushbutton switches are coupled to and cooperate with a pair of MOSFETs to provide each pushbutton switch of the plurality of pushbutton switches with a power on switch function for a personal audio device that does not require power to be drawn from a power source to monitor each of the pushbutton switches or to identify which of the pushbutton switches was manually operated to power on the personal audio device while awaiting operation of one of the pushbutton switches to cause the personal audio device to be powered on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.