Data transmission apparatus

Pulse or digital communications – Repeaters – Testing

Patent

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Details

375121, 379 97, 371 55, 371 30, H04B 346

Patent

active

050954946

ABSTRACT:
A data transmission apparatus is capable of data transmissions with and/or without error control. A remote data transmission apparatus with error control recognizes whether or not the carrier sent from the data transmission apparatus is intermittent. Additionally, the data transmission apparatus recognizes, based upon the existence of interruptions of a carrier signal sent from a remote data transmission apparatus, whether or not the remote data transmission apparatus has an error control function.

REFERENCES:
patent: 3113176 (1963-12-01), Doktor et al.
patent: 3457550 (1969-07-01), Gibson et al.
patent: 4894847 (1990-01-01), Tjahjadi et al.
patent: 4905282 (1990-02-01), McGlynn et al.
patent: 4959847 (1990-09-01), Engelke et al.

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