Pulse or digital communications – Spread spectrum – Direct sequence
Patent
1985-05-30
1986-11-11
Olms, Douglas W.
Pulse or digital communications
Spread spectrum
Direct sequence
375 8, H04B 138, H04L 2300
Patent
active
046226850
ABSTRACT:
Apparatus for controlling RTS/DCD simulation in a data receiver by detecting, after the received data transmitted for assignment to a particular data terminal, the presence of a two-part code having a repetitive stream of binary 1's or 0's (or repeating sequences thereof) as the first part; and for thereafter detecting the presence of a preselected coded sequence of bits within a preselected number of succeeding bits received as the second part of said two-part code. The preselected two-part code is advantageously chosen to be one whose probability of occurrence in customer data is extremely remote.
REFERENCES:
patent: 3633164 (1972-01-01), Hynes et al.
patent: 3747067 (1973-07-01), Fox et al.
patent: 3810155 (1974-05-01), Widl et al.
patent: 4044307 (1977-08-01), Borysiewicz et al.
patent: 4317207 (1982-02-01), Fujimura et al.
Chao Jessie
Dhawan Sadhu R.
Chin Wellington
Miller Jerry A.
Olms Douglas W.
Racal Data Communications Inc.
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