Portable telecommunication apparatus for multiple audio accessories
US6549790B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2000 |
| Grant date | Apr 15, 2003 |
| Priority date | — |
| Expiry date | Jan 27, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/271
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The portable telecommunications apparatus has an audio input for receiving sound, an audio output for generating sound, a controller for controlling the audio input and the audio output, and an audio accessory interface for operatively connecting an external audio accessory. The accessory is capable of receiving external sound and forwarding it as audio signals to the apparatus and/or capable of generating external sound in response to audio signals supplied from the apparatus. The controller is arranged to receive a request for an audio service from any of at least two audio accessories operatively connected to the apparatus. The controller also has a logical state machine, the individual states of which represent possible operational conditions for the telecommunication apparatus and the audio accessories. The state machine defines how the request for audio service is to be handled each of the operational conditions. The controller provides the audio service to an individual audio accessory among the audio accessories, as defined by the state machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.