Terrestial-signal based exclusion zone compliance
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United States of America Patent
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-
Nov 8, 2011
Grant Date -
Apr 7, 2011
app pub date -
Oct 14, 2010
filing date -
Apr 9, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
An exclusion zone compliance circuit comprises a terrestrial radio signal reception component for receiving a terrestrial radio signal comprising a unique identification of a transmission source. A non-volatile memory component of the circuit stores an encrypted data set describing boundaries of an exclusion zone. A navigation data deriving component of the circuit accesses a data set and compares the unique identification with a station identification of the transmission source and the geographic position of the transmission source. The navigation data deriving component derives a geographic position of the exclusion zone compliance circuit and determines whether the exclusion zone compliance circuit is located within an exclusion zone. A data blocking component of the circuit accesses the encrypted data set. A data control component of the exclusion zone compliance circuit blocks output of a signal in response to an indication that the circuit is located within an exclusion zone.
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