Communications: electrical – Condition responsive indicating system – With particular coupling link
Reexamination Certificate
2006-11-28
2006-11-28
Wu, Daniel (Department: 2612)
Communications: electrical
Condition responsive indicating system
With particular coupling link
C340S568100, C340S572300, C340S691600
Reexamination Certificate
active
07142108
ABSTRACT:
Monitoring for unauthorized RF energy emitted or transmitted in a particular zone or portion of a building, etc. Radio frequency energy is received in a region that encompasses a zone in which it is desired to monitor for unauthorized radio frequency energy. At least one characteristic of the received radio frequency energy is analyzed to determine whether unauthorized radio frequency energy is occurring in the zone. Unauthorized RF energy may be detected by analyzing at least one spectral characteristic of the received radio frequency energy and comparing the at least one spectral characteristic with data associated with authorized and/or unauthorized radio frequency energy. Alternatively, signal classification techniques can be applied to data derived from the received radio frequency energy to classify by type signals contained in the received radio frequency energy. Certain signal types may be designated as unauthorized in a particular restricted zone and the results of the signal classification analysis is compared with data for authorized and/or unauthorized signal types.
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PCT/US2005/29277 Search Report, Mar. 13, 2006.
Diener Neil R.
Floam D. Andrew
Kloper David S.
Cognio, Inc.
Edell Shapiro & Finnan LLC
Previl Daniel
Wu Daniel
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