Pulse or digital communications – Spread spectrum – Direct sequence
Patent
1992-03-13
1994-05-31
Chin, Stephen
Pulse or digital communications
Spread spectrum
Direct sequence
375106, 375 80, 375111, H04L 7033
Patent
active
053176022
ABSTRACT:
A base-band delayed detector has an operation circuit for performing a delayed detecting operation with respect to an input signal, the operation circuit outputting an altered signal having a predetermined symbol rate. The base-band delayed detector includes a clock generator for generating a clock signal having a frequency twice as large as the symbol rate, the clock signal being used as a timing signal in the operation circuit, a synchronizing circuit for synchronizing the clock signal with the altered signal output from the operation circuit and a data determination circuit for obtaining output data from the altered signal at a predetermined timing based on the clock signal synchronized with the altered signal.
REFERENCES:
patent: 3993956 (1976-11-01), Gilmore et al.
patent: 4535459 (1985-08-01), Hogge, Jr.
patent: 4949357 (1990-08-01), Sehier
patent: 5117135 (1992-05-01), Lee et al.
patent: 5175544 (1992-12-01), McKeen
Onoda Masahiro
Toda Yoshifumi
Chin Stephen
Fujitsu Limited
Phan Hai H.
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