{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
    "ref": {
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  "description": "When providing map information via a plurality of organizations, a map information management system which prevents data alteration of the map information and confirms data authenticity of the map information is obtained. The map information management system includes a map company exclusive…",
  "path": "/patents/1404387",
  "publishedAt": "2026-04-15T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C21/367",
    "MITSUBISHI ELECTRIC CORP [JP]"
  ],
  "textContent": "When providing map information via a plurality of organizations, a map information management system which prevents data alteration of the map information and confirms data authenticity of the map information is obtained. The map information management system includes a map company exclusive application data management device that confirms data authenticity from encrypted data obtained from a dynamic map data management device and generates encrypted data from data which is added map company exclusive application data to dynamic map data by a map company exclusive secret key, and an automotive data management device that obtains data which is added map company exclusive application data to dynamic map data from the map company exclusive application data management device, confirms data authenticity that is added map company exclusive application data to dynamic map data with using a map company exclusive application data public key, and generates encrypted data from data with automotive company exclusive application data by an automotive company exclusive application data secret key.",
  "title": "MAP INFORMATION MANAGEMENT SYSTEM"
}