Telecommunications – Transmitter and receiver at separate stations – With control signal
Patent
1998-05-21
2000-09-19
Bost, Dwayne D.
Telecommunications
Transmitter and receiver at separate stations
With control signal
455456, 455 88, H04B 100
Patent
active
061224863
ABSTRACT:
Disclosed is a transmission restricting system which has a transmission interruption controlling means for generating and radiating a magnetic field pattern including a command code to command the transmission interruption to a radio communication terminal equipment in a radio-wave transmission-prohibited area, the transmission interruption controlling means being disposed at the entrance or exit of the radio-wave transmission-prohibited area; a transmission interruption releasing means for generating and radiating a magnetic field pattern including a command code to command the releasing of transmission interruption to the radio communication terminal equipment in the radio-wave transmission-prohibited area, the transmission interruption releasing means being disposed at the entrance or exit of the radio-wave transmission-prohibited area; and a radio communication terminal equipment comprising means for detecting a magnetic field pattern including a command code to command the transmission interruption or the releasing of transmission interruption, and means for controlling the process of the transmission interruption or the releasing of transmission interruption according to the result of the detection of the detecting means.
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Okita Kenji
Tanaka Masahiko
Bost Dwayne D.
NEC Corporation
Redmon Joy K.
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