Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1997-08-25
2000-12-12
Vo, Nguyen
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455425, H04B 100
Patent
active
061610097
ABSTRACT:
A system to determine the length of time, known as the latency time, that is required to wait between transmitting and receiving data for a half-duplex electromagnetic transceiver having a transmitter and receiver wherein the receiver is electromagnetically coupled to the transmitter. The determination of the latency time is accomplished by the use of a control circuit that operates to turn the transmitter to an on state. The control circuit then monitors the receiver to determine when the receiver also goes to an on state due to the electromagnetic coupling. The control circuit subsequently turns off the transmitter and the length of time for the receiver to recover to an off state is measured. This length of time is the latency time and is used in subsequent transmission of data.
REFERENCES:
patent: 5262837 (1993-11-01), Shyy
patent: 5579145 (1996-11-01), Bogdan et al.
patent: 5677779 (1997-10-01), Oda et al.
patent: 5854702 (1998-12-01), Ishikawa et al.
Skurdal Vincent C.
Wheless, Jr. Thomas O.
Aoki Makoto
Hewlett--Packard Company
Vo Nguyen
Wade Matthew L.
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