Method and apparatus of packet loss concealment for CVSD coders

Details Method and apparatus of packet loss concealment for CVSD coders Method and apparatus of packet loss concealment for CVSD coders

2006-06-13

2006-06-13

Lee, Andrew C. (Department: 2663)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S465000

Reexamination Certificate

active

07061912

ABSTRACT:
An apparatus and methods for concealing missing packets in a CVSD bit stream are disclosed. In one embodiment, an indication from a packet loss indicator (PLI) that a packet is missing is received. Next the status of the missing packet is determined. Based on the status of the missing packet, a sample packet is generated to replace the missing packet, and a memory of the CVSD is updated. A compressed copy of the sample packet may be stored in a first memory buffer in either μ-law or a-law format.

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