
US Patent No: 5,898,391
Number of patents in Portfolio can not be more than 2000
Vehicle tracking system
Stats
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Apr 27, 1999
Issued date -
Nov 14, 1997
filing date -
08/970,590
serial no -
In Force
status
Importance
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Abstract
A vehicle alarm system includes a receiver transmitter subsystem, a G.P.S. subsystem for locating a position and a control CPU. The CPU performs a log and locate function in which it logs a first position of the vehicle once during an armed state of an alarm system and then, in response to the passage of a certain time interval, locates the position again. If the position of the vehicle has changed during the alarm of the alarm system, the vehicle's position is transmitted via the receiver/transmitter subsystem to a security response center that can then receive tracking information and locate the vehicle.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 4,651,157 Security monitoring and tracking system | 195 | 1985 | |
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| 5,223,844 Vehicle tracking and security system | 881 | 1992 | |
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| 5,334,974 Personal security system | 446 | 1992 | |
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| 5,515,043 Cellular/GPS system for vehicle tracking | 176 | 1994 | |
| 5,497,149 Global security system | 268 | 1995 | |