Pulse or digital communications – Spread spectrum – Direct sequence
Patent
1990-05-08
1991-12-31
Chin, Stephen
Pulse or digital communications
Spread spectrum
Direct sequence
370102, 370108, H04L 700
Patent
active
050777610
ABSTRACT:
An elastic buffer circuit for adjusting the timing between a satellite communication system of a time division multi-access (TDMA) type and a ground communication system is provided with a stable oscillator for generating a first clock signal whose frequency is N (N is an integer not smaller than 2) times the received clock frequency, a clock generating circuit for generating a second clock signal by frequency-dividing the first clock signal by N and, at the same time, setting the phase of the second clock signal on the basis of a sync code detection signal, and a data memory circuit for temporarily storing data signals in accordance with the second clock signal.
REFERENCES:
patent: 3531777 (1970-09-01), West
patent: 3809820 (1974-05-01), Sullivan
patent: 4270183 (1981-05-01), Robinson et al.
patent: 4596026 (1986-06-01), Cease et al.
patent: 4718074 (1988-01-01), Mannas et al.
patent: 4757521 (1988-07-01), Korsky et al.
patent: 4791488 (1988-12-01), Fukazawa et al.
patent: 4885758 (1989-12-01), Speckenbach
Chin Stephen
NEC Corporation
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