Audio and USB multiplexing
US7899946B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2008 |
| Grant date | Mar 1, 2011 |
| Priority date | — |
| Expiry date | Apr 17, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An analog/digital switching circuit for connecting a primary electronic device to a peripheral electronic device, including D+ and D− signal lines connected to a primary electronic device, a first analog/digital switch connected to the D+ signal line, for multiplexing an input D+ signal to an output USB data signal or audio left or right signal, the multiplexed signal feeding into a peripheral device connector for connecting the primary device to a peripheral electronic device, a second analog/digital switch connected to the D− signal line, for multiplexing an input D− signal to an output USB data signal or audio right or left signal, the multiplexed signal feeding into the peripheral device connector, a headset left signal line connected to the primary device and to the output audio left signal of the first analog/digital switch, a headset right signal line connected to the primary device and to the output audio right signal of the second analog/digital switch, a first USB signal line connected to a USB connector and to the output USB data signal of the first analog/digital switch, a second USB signal line connected to the USB connector and to the output USB data signal of the sec…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.