System for the transmission of digital data in packets

Details System for the transmission of digital data in packets System for the transmission of digital data in packets

1981-03-24

1983-11-08

Robinson, Thomas A.

Multiplex communications

Wide area network

Packet switching

370 18, H04L 402, H04J 300

Patent

active

044146620

ABSTRACT:
A system for the transmission of digital data in packets comprising transmission and reception means, wherein:
the transmission means are able to form single words taken in a group of words each having 2n bits and constituted by a word M of n bits between which are inserted the n bits of the complement word M, the bits of M being displaced relative to those of M by a number p of ranks, the choice of p defining a single word of the group;
in the reception means there is only one single word detector and it functions with n bits, said detector being able to detect the displaced appearances of p ranks of words M and M on each bit sequence of even rank and uneven rank.

REFERENCES:
patent: 3335409 (1967-08-01), Heller et al.
patent: 3519746 (1970-07-01), Gutleber
patent: 3777062 (1973-12-01), Ogawa
"Unique Word Detection in Digital Burst Communications", Schrempp et al., IEEE Trans. On Comm. Tech., vol. com-16, Aug. 1968, pp. 597-605.
"The Common TDMA Terminal Equipment for the Telesat TDMA System", Gabbard et al., IEEE Int. Conf. on Comm., Jun. 1975, pp. 19-21.

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