NAVIGATION SYSTEM FOR VEHICLE, AND READING METHOD OF MAP DATA WITH THE SYSTEM

PROBLEM TO BE SOLVED: To efficiently cut out map data required for navigation from a CD, a DVD, etc. in which overall map data is recorded to a work area for map data storage provided to the inside of a memory in the system. SOLUTION: Map data are constituted as a collection of section map data for...

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Bibliographic Details
Main Authors YOKOTA YASUNARI, NANBA YASUSHI
Format Patent
LanguageEnglish
Published 22.06.2006
Subjects
ADVERTISING
APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND,DEAF OR MUTE
CRYPTOGRAPHY
DIAGRAMS
DISPLAY
EDUCATION
EDUCATIONAL OR DEMONSTRATION APPLIANCES
GLOBES
GYROSCOPIC INSTRUMENTS
MEASURING
MEASURING DISTANCES, LEVELS OR BEARINGS
NAVIGATION
PHOTOGRAMMETRY OR VIDEOGRAMMETRY
PHYSICS
PLANETARIA
SEALS
SIGNALLING
SURVEYING
TESTING
TRAFFIC CONTROL SYSTEMS
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Summary:PROBLEM TO BE SOLVED: To efficiently cut out map data required for navigation from a CD, a DVD, etc. in which overall map data is recorded to a work area for map data storage provided to the inside of a memory in the system. SOLUTION: Map data are constituted as a collection of section map data for each section area acquired by divisions into rectangles along longitude and latitude lines. Sections, through which a reference line connecting a starting point to a destination in a straight line passes, are specified with reference to map data held in an external medium. Section map data of the specified sections is read from the external medium. Then sections, including at least part of a square area having the reference line as a diagonal line, are specified. Section map data of the sections specified, until the work area is filled sequentially from sections having a shorter vertical line drawn from the center of the specified section to the reference line, is read. COPYRIGHT: (C)2006,JPO&NCIPI
Bibliography:Application Number: JP20040349884