Push to talk system

Details Push to talk system Push to talk system

2007-10-16

2007-10-16

Perez-Gutierrez, Rafael (Department: 2617)

Telecommunications

Transmitter and receiver at separate stations

Plural transmitters or receivers

C455S518000, C455S519000, C455S414300, C455S414100, C455S500000, C455S456500, C370S259000, C370S271000

Reexamination Certificate

active

11168177

ABSTRACT:
To provide a PTT system that includes a plurality of PTT-capable mobile phones each including a display unit, and a server which mediates a PTT call between mobile phones out of the plurality of mobile phones. The server includes a storage unit, a retrieval unit, and a sending unit. The storage unit stores images of users of the plurality of mobile phones and phone identifiers of the plurality of mobile phones in correspondence with each other. The retrieval unit retrieves, from the storage unit, an image corresponding to a phone identifier of a mobile phone involved in the PTT call. The sending unit sends the retrieved image to at least one other mobile phone involved in the PTT call. A display unit in the at least one other mobile phone displays the image sent from the server.

REFERENCES:
patent: 7177627 (2007-02-01), Melaku et al.
patent: 2004/0047460 (2004-03-01), Adams et al.
patent: 2004/0162095 (2004-08-01), Edwards et al.
patent: 2004/0196826 (2004-10-01), Bao et al.
patent: 2005/0054352 (2005-03-01), Karaizman
patent: 2006/0019689 (2006-01-01), Pantalone et al.
patent: 2002-152384 (2002-05-01), None
patent: 2002-536928 (2002-10-01), None
patent: 2003-219047 (2003-07-01), None
patent: 03/010986 (2003-02-01), None

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