SYSTEM AND PROGRAM FOR STORING AND CONTROLLING INFORMATION OF ROAD SEGMENT
PROBLEM TO BE SOLVED: To improve effectiveness of the average of acquired values representing road gradients about a plurality of points in a road segment. SOLUTION: A car navigation system 1 is provided with an internal memory control system 16 storing map data, and acquires measurement values of t...
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| creator | HAMANISHI HIROSUE |
| description | PROBLEM TO BE SOLVED: To improve effectiveness of the average of acquired values representing road gradients about a plurality of points in a road segment. SOLUTION: A car navigation system 1 is provided with an internal memory control system 16 storing map data, and acquires measurement values of the road gradient at the plurality of points in a link of the map data (step 205). In the case a variation coefficient (i.e., function of standard deviation and average) indicative of the variation in the values of the road gradient is not less than a prescribed threshold, information of nodes which are used for further dividing the road segment so as to reduce the variation, is stored in the internal memory control system 16. COPYRIGHT: (C)2005,JPO&NCIPI |
| format | Patent |
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SOLUTION: A car navigation system 1 is provided with an internal memory control system 16 storing map data, and acquires measurement values of the road gradient at the plurality of points in a link of the map data (step 205). In the case a variation coefficient (i.e., function of standard deviation and average) indicative of the variation in the values of the road gradient is not less than a prescribed threshold, information of nodes which are used for further dividing the road segment so as to reduce the variation, is stored in the internal memory control system 16. 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SOLUTION: A car navigation system 1 is provided with an internal memory control system 16 storing map data, and acquires measurement values of the road gradient at the plurality of points in a link of the map data (step 205). In the case a variation coefficient (i.e., function of standard deviation and average) indicative of the variation in the values of the road gradient is not less than a prescribed threshold, information of nodes which are used for further dividing the road segment so as to reduce the variation, is stored in the internal memory control system 16. COPYRIGHT: (C)2005,JPO&NCIPI</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| 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 |
| title | SYSTEM AND PROGRAM FOR STORING AND CONTROLLING INFORMATION OF ROAD SEGMENT |
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