Push-to-talk mobile communication terminals

Details Push-to-talk mobile communication terminals Push-to-talk mobile communication terminals

2008-04-29

2008-04-29

Trinh, Tan (Department: 2618)

Telecommunications

Transmitter and receiver at separate stations

Plural transmitters or receivers

C455S518000, C455S090200

Reexamination Certificate

active

07366535

ABSTRACT:
Mobile communication terminals comprising a processor unit, a microphone, and a sound processing module for processing sounds captured by the microphone. The processor unit is configured to operate the terminal for a push-to-talk communication with at least one other mobile communication terminal via the communication network, and to operate the terminal during said push-to-talk communication in a latency state or in an active state in which sound captured by the microphone is processed by the sound processing module and sent to the at least one other mobile communication terminal. The processor unit is also configured to change from the latency state to the active state in dependence of the sound captured by the microphone.

REFERENCES:
patent: 5175872 (1992-12-01), Borras
patent: 7227565 (2007-06-01), Kawahara
patent: 2002/0039895 (2002-04-01), Ross et al.
patent: 2004/0102186 (2004-05-01), Odinak
patent: 2004/0224678 (2004-11-01), Dahod et al.
patent: 2005/0079884 (2005-04-01), Lazaridis
patent: 2005/0136848 (2005-06-01), Murray

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