On-board apparatus
US8898005B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2013 |
| Grant date | Nov 25, 2014 |
| Priority date | — |
| Expiry date | Mar 10, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An on-board apparatus includes: a map data storage unit in which map data that include altitude information are stored; a subject vehicle position detection unit that detects a subject vehicle position; and a calculation target geographical point setting unit that sets a calculation target geographical point based upon the subject vehicle position, wherein a road grade at the calculation target geographical point is calculated based upon altitudes of a plurality of geographical points that include at least a geographical point present ahead of the calculation target geographical point and a geographical point present behind the calculation target geographical point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.