Packet demultiplexing of a mac/packet broadcast signal
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United States of America Patent
Stats
-
May 31, 1988
Grant Date -
N/A
app pub date -
Feb 20, 1987
filing date -
Feb 20, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The device is for use in demultiplexing a MAC/PACKET incoming signal which comprises successive bursts of digital data distributed into packets, each packet consisting of useful data and a header having a channel number indicating one of a plurality of service components to which said packet is assigned, a continuity index IC and a header error protection code. The device has a circuit for generating all error-free configurations of a selected channel number and IC and corresponding to a respective service component; an encoder for encoding all error-free configurations into all possible theoretical header configurations having the error protection code; and a computer for computing the Hamming distances between each packet header in the incoming signal and all theoretical header configurations. Those packets for which the Hamming distance is not greater than a predetermined value are directed to an output interface.
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