Pulse or digital communications – Spread spectrum – Direct sequence
Patent
1981-04-29
1983-10-18
Safourek, Benedict V.
Pulse or digital communications
Spread spectrum
Direct sequence
455 51, 375109, 375118, H04J 306
Patent
active
044110073
ABSTRACT:
A synchronization system is provided for a tree-type transmission system comprising a central station connected to a plurality of remote stations in an effectively sequential manner, each station including transmitting and receiving means for digital data in a sequence of frames. Each remote station is instructed regularly by the central station of the time delay between the remote station and the central station. The remote station stores the time delay and arranges to advance information transmitted by the remote station so as to be received by the central station within the proper position in the frame. The time delay is measured by the central station by sensing a pattern of bits repetitively transmitted by the remote station and comparing the received pattern with a stored pattern and counting the number of shifts of the received pattern necessary to match the stored pattern. The delay stored by the remote station is tuned to one quarter of a bit to ensure accurate synchronization.
REFERENCES:
patent: 3562432 (1971-02-01), Gabbard
patent: 3654395 (1972-04-01), Schmidt
patent: 3671865 (1972-06-01), Szumilla et al.
patent: 3713025 (1973-01-01), McNair
patent: 3801981 (1974-04-01), Alpers
patent: 3906159 (1975-09-01), Lutz
patent: 4117267 (1978-09-01), Haberle et al.
patent: 4214261 (1980-07-01), Bazin et al.
patent: 4255814 (1981-03-01), Osborn
patent: 4271483 (1981-06-01), Baldwin et al.
patent: 4320503 (1982-03-01), Acampora
patent: 4337463 (1982-06-01), Vangen
Boland Peter
Rodman William
Ade Stanley G.
Safourek Benedict V.
The Manitoba Telephone System
LandOfFree
Distributed network synchronization system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Distributed network synchronization system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Distributed network synchronization system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1293386