{
  "$type": "site.standard.document",
  "description": "The present invention relates to a method for generating compressed navigation map database from uncompressed navigation map data, the uncompressed navigation map data containing different building blocks of navigation data, each building block addressing a specific functional aspect of the…",
  "path": "/patents/985101",
  "publishedAt": "2013-04-17T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C21/3446",
    "HARMAN BECKER AUTOMOTIVE SYS [DE]"
  ],
  "textContent": "The present invention relates to a method for generating compressed navigation map database from uncompressed navigation map data, the uncompressed navigation map data containing different building blocks of navigation data, each building block addressing a specific functional aspect of the navigation data, each block containing strings of data, the method comprising the steps of: - determining, for each block of the uncompressed navigation map data, most frequent substrings of the block (21), - storing, for each block, the determined most frequent substrings of the block in a seed block (22), - replacing, for each block, in the strings the determined most frequent substrings stored in the seed block by a reference to the seed block thereby generating a compressed block for each block (23), - storing, for each block, the compressed block and the seed block in order to generate the compressed navigation map database (24).",
  "title": "Method for compressing navigation map data"
}