Inband coding of secondary data

Details Inband coding of secondary data Inband coding of secondary data

1984-12-24

1987-02-17

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

375 39, H04L 300

Patent

active

046445374

ABSTRACT:
In a system for communicating primary and secondary data from a transmitter to a receiver, each of a first plurality of primary data word values is communicated by transmitting an individual channel symbol associated with that value, while at least one other primary data word value is communicated by transmitting a selected one of at least two other channel symbols associated with that one other value. The selected symbol is a function of the value of an individual secondary data word. In the receiver, both the primary and secondary data word values are recovered from the channel symbols thus transmitted.

REFERENCES:
patent: 3955141 (1976-05-01), Lyon et al.
patent: 4227152 (1980-10-01), Godard et al.
patent: 4271527 (1981-06-01), Armstrong
patent: 4408325 (1983-10-01), Grover
patent: 4442530 (1984-04-01), Parrish, Jr. et al.
patent: 4571549 (1986-02-01), Lods et al.

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