Telephonic communications – Echo cancellation or suppression – Having analog variolosser or attenuator
Reexamination Certificate
2011-06-28
2011-06-28
Gauthier, Gerald (Department: 2614)
Telephonic communications
Echo cancellation or suppression
Having analog variolosser or attenuator
C370S286000, C370S289000, C375S285000, C375S295000, C379S406010, C379S406080, C714S701000
Reexamination Certificate
active
07970124
ABSTRACT:
A system and method for provide a stable gain from an adaptive gain control device in a signal path. An echo canceller is also located in the signal path, and is used to provide performance information regarding losses in the signal. This performance information is fed to the automatic gain control device via a connection. The automatic gain control device thereafter uses the performance information to determine a maximum gain that might be provided based upon losses cause by echo conditions. The gain however is limited in order to provide for a stable system. The performance information includes a loss rate that includes a combination of the echo return loss and the echo return loss enhancement.
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Broadcom Corporation
Gauthier Gerald
McAndrews Held & Malloy Ltd.
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