Audio systems and methods

Details Audio systems and methods Audio systems and methods

2005-08-04

2010-02-23

Tran, Tuan A (Department: 2618)

Telecommunications

Radiotelephone system

Emergency or alarm communication

C455S003010, C455S003050, C455S003060, C455S414100, C455S414300, C455S450000, C455S452100, C455S455000, C455S458000, C455S567000, C455S218000, C455S219000, C455S221000

Reexamination Certificate

active

07668529

ABSTRACT:
An audio system may comprise a transceiver configured to receive, detect, and transmit audio signals on a first channel frequency and to receive and detect audio signals on at least one additional channel frequency. The at least one additional channel frequency may include a second channel frequency. The system may include a controller configured to output a first audio cue while outputting audio signals received from the at least one additional channel frequency, to output a second audio cue at a time when the controller begins outputting an audio signal received from the first channel frequency, and to output a third audio cue at a time when the controller begins outputting an audio signal received from the second channel frequency. The first, second, and third audio cues may be different from one another.

REFERENCES:
patent: 5495283 (1996-02-01), Cowe
patent: 5708662 (1998-01-01), Takashima
patent: 6169894 (2001-01-01), McCormick et al.
patent: 6397076 (2002-05-01), Brown et al.
patent: 7324003 (2008-01-01), Yun
patent: 7330693 (2008-02-01), Goss

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