Vehicular emergency message system activation diagnostics recorder
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United States of America Patent
Stats
-
Jul 14, 1998
Grant Date -
N/A
app pub date -
Oct 28, 1996
filing date -
Oct 28, 1996
priority date (Note) -
In Force
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. Predetermined information concerning system operation is stored in a non-volatile memory during an activation for diagnostic purposes. Data is written in two groups at respective times during an activation, and a status flag indicates whether both groups were successfully written to memory.
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