{
  "$type": "site.standard.document",
  "description": "Systems, methods, and programs for updating map data create differential data in a server (2) by comparing an old version of map data stored in the server (2) with a new version of map data and transmit the differential data from the server to a relay device (4). The systems, methods and programs…",
  "path": "/patents/1066419",
  "publishedAt": "2006-06-14T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C21/3859",
    "AISIN AW CO [JP]"
  ],
  "textContent": "Systems, methods, and programs for updating map data create differential data in a server (2) by comparing an old version of map data stored in the server (2) with a new version of map data and transmit the differential data from the server to a relay device (4). The systems, methods and programs create updated map data by combining the differential data received from the server (2) with map data previously stored in the relay device (4). The relay device (4) may then be connected to an updated data storing device that disconnectably connects to both the relay device and a navigation system (10). The systems, methods, and programs, may then transfer the updated map data from the relay device (4) to the updated data storing device and from the updated data storing device to the navigation system (10).",
  "title": "Map data updating server, relay device and system"
}