Cryptography – Key management – Key distribution
Reexamination Certificate
2007-04-10
2007-04-10
Smithers, Matthew (Department: 2137)
Cryptography
Key management
Key distribution
C380S272000
Reexamination Certificate
active
10173485
ABSTRACT:
A security system for a digital trunked radio system having a digital control channel and a plurality of working channels, wherein said working channels are assigned for temporary use of individual radio units by digital control signals transmitted over said control channel, said control channel carrying digital control signals between a base site and said radio units, comprising a digital key, said key used to limit access to the system equipment and system control channel transmissions.
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Collum James F.
Janky William Oscar
Maddox Dennis
Peterson, III Eugene H.
M/A-COM Private Radio Systems, Inc.
Smithers Matthew
LandOfFree
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