Vehicular emergency message system with automatic periodic call-in
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United States of America Patent
Stats
-
Nov 11, 1997
Grant Date -
N/A
app pub date -
Apr 10, 1995
filing date -
Apr 10, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vehicle user can request emergency or roadside assistance from a response center by activating a button in the vehicle. The global positioning system is used to continuously store the vehicle location. A cellular telephone network is used to contact a response center and transfer a data string via modem containing information to assist the response center in acting on the request. The vehicle installed system initiates an automatic call-in to the response center if the elapsed time since the last successful connection with the response center is greater than a predetermined time. Data is transmitted during the automatic call-in that identifies the vehicle and verifies to the response center that a particular system is operative.
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