Data processing: vehicles – navigation – and relative location – Navigation – Employing position determining equipment
Reexamination Certificate
1994-06-07
2001-04-03
Trans, Vincent N. (Department: 2703)
Data processing: vehicles, navigation, and relative location
Navigation
Employing position determining equipment
C701S201000, C706S900000, C706S913000, C340S988000, C340S990000, C340S995190
Reexamination Certificate
active
06212470
ABSTRACT:
FIELD OF THE INVENTION
This invention is generally directed to the field of navigation, and more particularly to route guidance for vehicles. The present invention is related to U. S. patent application Ser. No. 07-786,867 A VEHICLE ROUTE PLANNING SYSTEM, Seymour et. al. and to U. S. patent application Ser. No. 07/786,500 AN IMPROVED ACCURACY SENSORY SYSTEM FOR VEHICLE NAVIGATION, Seymour et. al., both of which were filed on the same date herewith and are assigned to the assignee of the present invention.
BACKGROUND OF THE INVENTION
Modern vehicular navigation systems combine sensors, a map database, an interactive display, and dead-reckoning navigation schemes with various route planning and guidance schemes in order to route the driver from his present location to a desired destination location while providing guidance cues along as required. The problem with current technology is that it doesn't take into account driver preferences, vehicle parameters such as speed and/or performance capabilities, or outputing flexible guidance instructions based on these considerations. While some drivers want plenty of warning before an expected maneuver, some don't want to be bothered until necessary. As some drivers drive more aggressively, or have a high performance suspension they may want to approach the location of a maneuver faster, requiring an earlier guidance instruction.
SUMMARY OF THE INVENTION
A vehicle route guidance system includes a vehicle location sensor and an anticipated vehicle manoeuvre location determiner. A comparator compares the vehicle location and the anticipated vehicle maneuver location and generates a distance difference. The distance difference is coupled to a model free guidance instruction determiner, and the determined guidance instruction is then communicated to the vehicle operator.
REFERENCES:
patent: 4733356 (1988-03-01), Haeussermann et al.
patent: 4937751 (1990-06-01), Nimura et al.
Fuzzy Logic Simplifies Complex Control Problems, Tom Williams, Computer Design, Mar. 1, 1991, pp. 90-102.
Knowledge Representation in Fuzzy Logic, Lotfi A. Zadeh, IEEE Transaction on Knowledge and Data Engineering, vol. 1, No. 1, Mar. 1989.
Fuzzy Systems and Applications, United Signals and Systems Inc., Bart Kosko with Fred Watkins, Jun. 5-7, 1991, p. 18.
Prototype for a Land Based Automatic Vehicle Location and Navigation System, a Thesis by Clyde B. Harris, submitted to the Department of Surveying Engineering, Calgary, Alberta, Dec. 1989.
Barnea Michael
Kirson Allan
Seymour Leslie G.
Hopman Nick
Jones Hugh
Motorola Inc.
Trans Vincent N.
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