{
  "$type": "site.standard.document",
  "description": "An on-board apparatus includes: a map data storage means in which map data that include altitude information are stored; a subject vehicle position detection means for detecting a subject vehicle position; and a calculation target geographical point setting means for setting a calculation target…",
  "path": "/patents/984165",
  "publishedAt": "2013-09-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C21/26",
    "CLARION CO LTD [JP]"
  ],
  "textContent": "An on-board apparatus includes: a map data storage means in which map data that include altitude information are stored; a subject vehicle position detection means for detecting a subject vehicle position; and a calculation target geographical point setting means for setting a calculation target geographical point 30, 50 based upon the subject vehicle position, wherein a road grade at the calculation target geographical point 30, 50 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 30, 50.",
  "title": "On-board apparatus"
}