System and method for navigating vehicle along set route of travel
US5371678A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 21, 1991 |
| Grant date | Dec 6, 1994 |
| Priority date | — |
| Expiry date | Nov 21, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/096888
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A system and method for navigating a vehicle along a route of travel are disclosed in which a plurality of routes present between a point of start of the vehicle and a destination are a plurality of road segments divided for respective branching points provided in midways through the plurality of routes of travel are stored in storage areas of a memory in a control unit together with information related to the plurality of road segments. The control unit of the guidance system calculates a predicted time at which the vehicle is to pass through each of the plurality of road segments on the basis of information stored in the storage areas. An optimum route of travel from the starting point to the destination is set according to the result of a calculation of the least predicted time. Hence, even if a traffic limitation time band is provided on the set route of travel due to various types of traffic passage limitations, such an external factor of disturbance is input and stored in the storage areas so that an appropriate route of travel can be searched from the information stored in the storage areas. During the vehicle run on the set route of travel, the appropriate searching for the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.