Telematics system and method having combined cellular and satellite functionality
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Apr 17, 2012
Grant Date -
Nov 13, 2008
app pub date -
May 8, 2007
filing date -
May 8, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A vehicle Telematics unit includes a cellular transceiver and a satellite receiver. At least one controller controls the transceiver and the receiver and determines which one to use to communicate with a source of Telematics service. If the transceiver is to be used, the controller receives messages in cellular communications from the source with a cellular network. If the receiver is to be used, the controller receives messages in satellite communications from the source with a satellite network. The controller can programmably control power from a battery to the transceiver and receiver when the vehicle is turned off using discontinuous reception parameters, designated on/off times, a controlled duration, and programmable timers. The transceiver is used to return acknowledgments of messages received. If a message is received with the receiver, the acknowledgment is stored so it can be sent at another time when the transceiver is to be used.
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