Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2007-05-01
2007-05-01
Lee, Benjamin C. (Department: 2632)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S506000, C340S010100, C375S356000, C375S376000
Reexamination Certificate
active
10056947
ABSTRACT:
A distributed wireless phase locked loop system for synchronizing the transmit carrier's modulating waveform, such as the transmitter pulse timing in a pulsed EAS system and the transmit sweeping function for swept RF synchronization, is provided. To remove the effect of phase noise on the power line signal, a phase locked loop is used to filter this signal. The filtered output is used as a reference to a second phase locked loop tied to a numerically controlled oscillator and the received signal to provide a distributed phase looked loop algorithm that is wireless, and automatically synchronizes adjacent EAS systems.
REFERENCES:
patent: 4106007 (1978-08-01), Johnston et al.
patent: 4622543 (1986-11-01), Anderson et al.
patent: 4658241 (1987-04-01), Torre
patent: 4667185 (1987-05-01), Nourse et al.
patent: 4675658 (1987-06-01), Anderson et al.
patent: 4797659 (1989-01-01), Larsen
patent: 5023600 (1991-06-01), Szklany et al.
patent: 5051727 (1991-09-01), Fockens
patent: 5276430 (1994-01-01), Granovsky
patent: 5337040 (1994-08-01), Kind
patent: 5353011 (1994-10-01), Wheeler et al.
patent: 5371490 (1994-12-01), Martinides
patent: 5608765 (1997-03-01), Tanoue
patent: 5699045 (1997-12-01), Frederick et al.
patent: 5995002 (1999-11-01), Fallin et al.
patent: 6201469 (2001-03-01), Balch et al.
patent: 6320507 (2001-11-01), Strzelec et al.
Frederick Thomas J.
Oakes Jeffrey T.
Lee Benjamin C.
Sensormatic Electronics Corporation
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