Three-level serial digital data communication system

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H04L 300

Patent

active

040830055

ABSTRACT:
A three-level, direct-coupled binary serial digital data transmission channel using a shielded twisted wire cable as the transmission line. The binary data to be transmitted is encoded into a self-clocking three-level code requiring only one transition for each bit transmitted. A balanced direct-coupled three-state differential driving circuit is used as the transmission line driver, and a balanced, direct-coupled three-level differential receiver circuit is used as the transmission line receiver.

REFERENCES:
patent: 3573622 (1971-04-01), Holzman
patent: 4003041 (1977-01-01), VAN Duuren

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