Method of facilitating an audio source change in a digital radio communication system
US5485462A · kind A · utility
Inventors
Key dates
| Filing date | Aug 25, 1994 |
| Grant date | Jan 16, 1996 |
| Priority date | — |
| Expiry date | Aug 25, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/135
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention encompasses a method of facilitating an audio source change in a digital radio communication system (100). A typical system includes a plurality of audio source units ( 101-103), a plurality of audio destination units (105, 106), and a switching unit (108) for rendering one of the plurality of audio source units (101-103) operable. Upon receipt (302) of an information-bearing frame from an audio source unit, a frame sequence value is identified (304). The expected frame sequence value is then determined (306), and this value is compared to the identified frame sequence value to determine whether or not the received frame sequence value matches the expected frame sequence value. When the frame sequence values match, it is assumed that the frames were sourced from the same audio source unit (i.e., no source change has occurred). When a mismatch is detected, a source change indication is transmitted by the audio destination units to the communication unit (310), thereby facilitating the audio source change.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.