Optimum route determination
May 26, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesRoute end node series preparing system of navigation apparatus Navigation system Method and apparatus for determining a route between a starting point and a destination Adaptive in-vehicle route guidance system Position input system for vehicular navigation apparatus Bucket-oriented route planning method, and navigation system comprising a route planner for carrying out such a method Vehicle route planning system Vehicle map position determining apparatus Systems and methods for planning the scheduling travel routes 5285391 InventorsAssigneeApplicationNo. 250105 filed on 05/26/1994US Classes:340/995.22, Pattern matching340/990, With map display701/202, Route pre-planning701/209Including route searching or determining deviceExaminersPrimary: Swarthout, Brent A.Attorney, Agent or FirmInternational ClassG08G 001/123Foreign Application Priority Data1990-11-09 JPAbstractAn optimum route determination apparatus comprises a plurality of specific points selected from a road map on the basis of a fixed criterion, and an optimum route leading to each destination in which one of the specific points is a departure point and which has been calculated in advance. A route memory has a route table in which data of an initial route leading from the one of the specific points to at least the next specific point through which the optimum route passes are stored in correspondence with the each destination and the one of the specific points. An initialization unit is provided for setting a destination, a specific point near to a vehicle's current location, and specific points along the optimum route. An initial route acquisition unit is provided for retrieving the route table to acquire the data of the initial route in accordance with the destination and the specific point set by the initialization unit.Other References
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