Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2005-09-20
2005-09-20
Chin, Vivian (Department: 2682)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C343S823000, C343S823000, C343S823000, C343S823000
Reexamination Certificate
active
06947742
ABSTRACT:
A system for providing ground location messages to an aircraft equipped with a Marker receiver, comprising a plurality of message transmitting devices arranged at different locations, each message transmitting device comprising:a radio transmitter (81, 82) operating at standard Marker Beacon frequency and connected to antenna means arranged to radiate a signal within a predetermined area at the location;message storage means (76, 77) connected to the transmitter for storing a voice message to be transmitted thereby; anddetector means (72) for detecting the presence of an aircraft within said predetermined area and for actuating the transmitter to transmit the voice message in response to detection of an aircraft.
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Flores, Jimenez A., International Search Report dated Sep. 3, 2001, pp. 1-4, Europe.
Chin Vivian
Dao Minh D.
Jackson & Walker, LLP
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