Method of facilitating an audio source change in a digital radio

Details Method of facilitating an audio source change in a digital radio Method of facilitating an audio source change in a digital radio

1994-08-25

1996-01-16

Marcelo, Melvin

Multiplex communications

Wide area network

Packet switching

370 953, 379 60, 455 332, H04Q 722

Patent

active

054854628

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.

REFERENCES:
patent: 5081679 (1992-01-01), Dent
patent: 5243653 (1993-09-01), Malek et al.
patent: 5293423 (1994-03-01), Dahlin et al.
patent: 5305308 (1994-04-01), English et al.
patent: 5325419 (1994-06-01), Connolly et al.

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