Multiplex communications – Duplex – Transmit/receive interaction control
Reexamination Certificate
2007-08-28
2010-11-16
Gauthier, Gerald (Department: 2614)
Multiplex communications
Duplex
Transmit/receive interaction control
C379S406010, C379S406030, C704S219000, C704S226000
Reexamination Certificate
active
07835311
ABSTRACT:
Methods and apparatus of managing a communication system, wherein a decision regarding a level of activity at a first end is made based at least in part on the level of activity at the second end. In one embodiment, the energy level of a first-end audio signal is measured. The first end is declared voice-active if the first-end energy level is greater than or equal to a first threshold value. The first end is declared voice-inactive if the first-end energy level is less than the first threshold value. To determine the value of the first threshold value, the energy level of a second-end audio signal is measured. If the second-end energy level is greater than or equal to a second threshold value, the second end is declared voice-active, in which case the first threshold is maintained at a relatively high level. If the second-end energy level is less than the second threshold value, the second end is declared voice-inactive, in which case the first threshold is maintained at a relatively lower level.
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Broadcom Corporation
Gauthier Gerald
McAndrews Held & Malloy Ltd.
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