Vehicle tracker conserving codes and related methods
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 18, 2003
Grant Date -
Feb 7, 2002
app pub date -
May 17, 2001
filing date -
May 17, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vehicle tracking system includes a vehicle tracking unit and a monitoring station communicating therewith. The vehicle tracking unit may include a vehicle position determining device, a wireless communications device, and a controller connected to the wireless communications device and the vehicle position determining device. More particularly, the controller may have a plurality of different controller states and respond differently to a same message from the monitoring station at different times depending upon the controller state at a given time. Accordingly, a number of codes or messages used by the system can be conserved.
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