The ErrorCombater
- Compandent's Generic
Patent ( 6,614,370 )
Compression
for Degraded Storage and Transmission
DESCRIPTION:
Compandent has developed a method and
system that efficiently codes signals, such as speech,
audio, and video, over packetized networks or storage media, in less-than-ideal
channel condition where bit error, frame erasure or
packet loss occurs.
APPLICATIONS:
The system can be used for systems such as real-time, streaming or storage media, that uses coding systems
to transmit (or store) signals such as speech, audio and video
over packetized networks, such as Voice-over-Internet
Protocol (VoIP) and third or fourth generation (3G), (4G)
wireless networks, or WiFi, in less-than-ideal channel condition
where packet loss or frame erasure occurs. The system
can also be used as enhancement layer
for existing standard coder in a base layer,
such that the invention can be used to enhance the performance
of standard coder whenever bit error, packet loss or
frame erasure occurs.
ADVANTAGES:
The new coding scheme reduces or eliminates
the usage of error concealment techniques to generate
an approximation of the reconstructed signal. The new
coding scheme allows exact reconstruction of the signal
in spite of frame erasure. The system can be designed
to tolerate different level of frame erasure, and coding
delay. The system can also be used as enhancement
layer for existing standard coder in a base
layer.
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