Pseudo random framing generator circuit

Details Pseudo random framing generator circuit Pseudo random framing generator circuit

1986-09-15

1988-01-12

Griffin, Robert L.

Pulse or digital communications

Spread spectrum

Direct sequence

375 1, 370105, 370107, 331 78, 364717, H04L 708, H04J 306

Patent

active

047196432

ABSTRACT:
This invention is a circuit for generating a framing pattern consisting of a pseudo random shift register sequence. This circuit utilizes an extremely long framing pattern without either a large amount of memory or the need to receive a large number of bits in order to recognize the framing pattern. The use of lengthy framing patterns minimizes the chance of false framing caused by patterns in bit positions other than the framing bit position.

REFERENCES:
patent: 3261918 (1966-07-01), Sisti
patent: 3648237 (1972-03-01), Frey, Jr. et al.
patent: 3798544 (1974-03-01), Norman
patent: 3947634 (1976-03-01), Betts
patent: 4048563 (1977-09-01), Osborne
patent: 4092601 (1978-05-01), Lee et al.
patent: 4095226 (1978-06-01), Kratzer
patent: 4291386 (1981-09-01), Bass
patent: 4408298 (1983-10-01), Rukland
patent: 4475208 (1984-10-01), Ricketts

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