Host interface, accessory interface and method for managing a connection between a host interface and an accessory device
US9894436B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 11, 2015 |
| Grant date | Feb 13, 2018 |
| Priority date | — |
| Expiry date | Jun 11, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2420/09
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A host interface for a media device comprises a first and a second host audio terminal for receiving a first and a second analog audio signal, a first and a second connector audio terminal for connecting a first and a second pole of a four-pole connector, and a host control circuit. The host control circuit is adapted to detect whether a device requiring a supply signal over the four-pole connector is connected. If no such device is detected, the first and the second analog audio signal are passed to the first and the second connector audio terminal. If such a device is detected, the first connector audio terminal is connected to a supply terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.