Repetitive sequence data transmission system

Details Repetitive sequence data transmission system Repetitive sequence data transmission system

1983-12-15

1987-02-10

Shaw, Gareth D.

Pulse or digital communications

Repeaters

Testing

364900, H04L 2700

Patent

active

046428100

ABSTRACT:
A data transmission system wherein data are entered upon activation of input points of an entry unit (1) of the keyboard type, including a sequence generation unit (5) generating a series of "maximum length" sequences on to a series-output (8) and a different binary pattern for each bit in the sequence on to a parallel-output (6). Such a binary pattern is compared in a coincidence circuit (7) with the binary representation of an activated point of the entry unit (1) so as to produce a bit "one" on line (9) which alters, through an X OR circuit (10), the corresponding bit in the sequence to be transmitted over the transmission line (11).

REFERENCES:
patent: 3335404 (1967-08-01), Wood
patent: 3496549 (1970-02-01), Tong
patent: 4031515 (1977-06-01), Kashio
patent: 4241419 (1980-12-01), Kronies
patent: 4368534 (1983-01-01), Sibley
patent: 4413341 (1983-11-01), Markhasin et al.

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