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US 6,308,052 B1Granted
Half-duplex radios for indicating signal transmissions
AssigneeImran A. Jamali
InventorsImran A. Jamali, Rami H. Khatib
Life of this patent
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AssigneeImran A. Jamali
InventorsImran A. Jamali, Rami H. Khatib
Estimating the term…
A radio for a half-duplex communication system includes a warning circuit for indicating when a transmission of a signal is taking place. The radio includes a transceiver for providing a voice signal, and the warning circuit includes a pulse generator for providing a beacon signal. The voice signal and the beacon signal are combined into a transmitted signal. The warning circuit includes a power splitter for receiving a remote signal from an antenna and for dividing the remote signal into the voice and beacon signals thereof. The power splitter then provides the voice signal to the transceiver. A comparator compares a level of the received beacon signal with a reference and provides an output to an indicator (such as an LED) when the level of the beacon signal is greater than the reference. As such, the indicator illuminates in the presence of a beacon signal. A preferred implementation of the radio is in an air-traffic environment, with each aircraft and a control tower initiating and receiving transmission therewith.
A radio for a half-duplex communication system, said radio comprising:
A radio as claimed in claim 6 wherein said warning circuit includes a power splitter connected to said antenna for providing said remote signal to said comparator when in said transmit mode.
A method for indicating a transmission in a half-duplex communication system, said method comprising the steps of:
A half-duplex communication system comprising:
Dependencies are inferred from the claim text.