Transmitting means for use in a high speed, low noise digital da

Details Transmitting means for use in a high speed, low noise digital da Transmitting means for use in a high speed, low noise digital da

1978-03-13

1980-10-21

Stewart, David L.

Multiplex communications

Wide area network

Packet switching

178 696, 370 86, H04J 306

Patent

active

042296218

ABSTRACT:
Transmitting means for use in a serial type data transmission channel employing a plurality of coaxial lines for communicating digital data from the transmitting means to a receiving means. The transmitter means provides for transmission of data messages and message identifying data on a first coaxial line and the transmission of a clock on a second coaxial line. The transmitted clock is transmitted at a first repetition rate when a message is being transmitted and at a second repetition rate when message identifying data is being transmitted. The transmitting means employs shift register means capable of selectively shifting applied data in opposite directions so as to provide for the expeditious serial outputting of message and message identifying data to the first coaxial line during separate time periods.

REFERENCES:
patent: 3534264 (1970-10-01), Blasbalg
patent: 3862373 (1975-01-01), Cohen
patent: 3870828 (1975-03-01), Saliga
patent: 4001504 (1977-01-01), Hendrickson

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