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US 6,728,633 B2Granted
Map data processing apparatus and method of the same
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsMakoto Mikuriya, Mitsuo Shimotani, Masaharu Umezu, Tomoya Ikeuchi
Life of this patent
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Abstract
A map data processing apparatus and a method of obtaining updating operation information indicating updating content of map data, and updating the map data according to the updating operation information obtained.
Claims10
A map data processing apparatus comprising:
- storing means for storing map data, the map data including record map data stored in a plurality of tables, and header map data indicating a location of each table by an offset from a reference point;
- information acquiring means for sending an updating operation request requesting an update in the map data to a map-data-providing station, and for acquiring updating-operation information indicating updating content transmitted from the map-data-providing station in response to the updating-operation request containing map data identification information and a version number for the map data identification information;
- and
- updating means for updating the map data stored in said storing means according to the updating-operation information acquired by said information acquiring means, wherein the updating-operation information contains an updating information header that includes
- data type information for specifying type of the map data to be updated,
- update position information for specifying whether the map data to be updated is located by a record number or offset information, and
- update type information indicating type of update to be performed on the map data.
4 more elements
A map data processing method comprising:
- acquiring updating-operation information transmitted from a map-data-providing station in response to an updating-operation request, requesting an update of the map data, wherein the updating-operation information contains an updating information header that includes
- data type information for specifying type of map data to be updated,
- update position information for specifying whether the map data to be updated is located by a record number or offset information, and
- update type information indicating type of update to be performed on the map data;
- and
- updating the map data according to the updating-operation information.
3 more elements
A map-data-providing station comprising:
- a road-link database for storing road-link data managed by a version unit;
- a road-link-updating database for storing road-link-updating data indicating an updating state of respective versions;
- and
- updating-operation information generating means for generating updating-operation information of the road-link data of respective versions with reference to the road-link data and the road-link-updating data in accordance with updating-operation information indicating updating content of map data acquired from a map-data processing device, wherein the updating-operation information contains an updating information header that includes
- data type information for specifying type of map data to be updated,
- update position information for specifying whether map data to be updated is located by a record number or offset information, and
- update type information indicating type of update to be performed on the map data.
4 more elements
A map-data-providing method comprising:
- generating updating-operation information for road-link data of respective versions with reference to road-link information managed by a version unit, wherein the updating-operation information generated indicates updating state of respective versions in accordance with updating-operation information indicating an updating content of map data acquired from a map data processing apparatus, wherein the updating-operation information contains an updating information header that includes
- data type information for specifying type of map data to be updated,
- update position information for specifying whether map data to be updated is located by a record number or offset information, and
- update type information indicating type of update to be performed on the map data;
- and
- transmitting the updating-operation information generated to a map data processing apparatus.
3 more elements
Dependencies are inferred from the claim text.