Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1989-12-07
1990-12-04
Orsino, Joseph A.
Communications: electrical
Condition responsive indicating system
Specific condition
34082572, G08B 1314
Patent
active
049756818
ABSTRACT:
A control arrangement both interrelates the frequency of transmitted signals to an interfering frequency and effects received signal processing also with relation to the interfering frequency in reaching enhanced insensitivity to undesired content of received signals. In particular respect of interference arising in an EAS system in relation to the local power frequency, the invention looks to a control arrangement which both interrelates the frequency of the transmitted signals to the local power frequency and effects received signal processing with relation to the local power frequency in reaching enhanced insensitivity to undesired content of received signals.
REFERENCES:
patent: 4260983 (1981-04-01), Falck et al.
patent: 4791412 (1988-12-01), Brooks
Lynch Kevin
Watkins Harry E.
Mullen Jr. Thomas J.
Orsino Joseph A.
Sensormatic Electronics Corporation
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