Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2006-03-17
2009-10-27
Vo, Don N (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C455S001000
Reexamination Certificate
active
07609748
ABSTRACT:
A system and method of electronic signal jamming employ a jamming signal transmitter, an electronic signal tuner and a controller. During a first time period, the transmitter transmits a jamming signal in a first frequency segment comprising first frequencies. In a subsequent second time period, the transmitter stops transmitting, while the tuner collects signals in a second frequency segment comprising second frequencies. In a subsequent third time period, the transmitter resumes transmitting the jamming signal in the first frequency segment, while at a same time the controller processes the signals collected by the tuner in the second frequency segment and the tuner tunes to a third frequency segment comprising third frequencies. Then, before any further signals are collected by the tuner, the transmitter transmits the jamming signal in the second frequency segment responsive to the signals collected in the second frequency segment and processed by the controller.
REFERENCES:
patent: 3670333 (1972-06-01), Winn
patent: 4017856 (1977-04-01), Wiegand
patent: 5128679 (1992-07-01), Moffat
patent: 5361301 (1994-11-01), Robertson et al.
patent: 6476755 (2002-11-01), Senio et al.
Agilent Technologie,s Inc.
Vo Don N
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