{
  "$type": "site.standard.document",
  "description": "A control unit regulates a display device to show an image at a position according to the position and azimuth of the vehicle and the measured head position, on the front windshield portion (131). A vehicle measurement unit (120) measures a position and azimuth of the vehicle on a world coordinate…",
  "path": "/patents/1088851",
  "publishedAt": "2004-03-17T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C21/365",
    "CANON KK [JP]"
  ],
  "textContent": "A control unit regulates a display device to show an image at a position according to the position and azimuth of the vehicle and the measured head position, on the front windshield portion (131). A vehicle measurement unit (120) measures a position and azimuth of the vehicle on a world coordinate system, while a head measurement unit (140) measures the position of the head of a passenger (132) on the vehicle on a coordinate system defined in the vehicle. Independent claims are also included for the following: (a) an image display method; (b) a measurement method; (c) a computer program; (d) a computer readable storage medium; (e) an information processing method; (f) an information processing apparatus; and (g) an index identification method.",
  "title": "Head up display for navigation purposes in a vehicle"
}