Multiplexer system providing improved bit count integrity

Details Multiplexer system providing improved bit count integrity Multiplexer system providing improved bit count integrity

1979-05-18

1981-03-31

Stewart, David L.

Multiplex communications

Wide area network

Packet switching

H04J 306

Patent

active

042597382

ABSTRACT:
A multiplexer system providing a transmission frame field containing information derived from the cumulative total of stuff bits used over a plurality of frames. The stuff bits which also have assigned positions in the transmission frame are generally used in asynchronous systems to compensate for the input data rate of a group not being a fixed submultiple of the transmission rate. The demultiplexer system uses the information derived from the cumulative total to improve the bit count integrity performance of data channeled out to a user device. Also, during transmission fade conditions, the demultiplexer uses information derived from the frequency of past stuff operations to maintain group bit count close to its expected value.

REFERENCES:
patent: 2958727 (1960-11-01), Barbeau
patent: 3504287 (1970-03-01), Deregnaucourt
patent: 3526875 (1970-09-01), Jourdan
patent: 3753225 (1973-08-01), Liddell
patent: 3873773 (1975-03-01), Guy
patent: 3970796 (1976-07-01), Gyurkl
patent: 3980835 (1976-09-01), Mitchell

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