Map data processing unit

• US 20050114019A1
• Filed: 12/29/2004
• Published: 05/26/2005
• Est. Priority Date: 03/25/2003
• Status: Abandoned Application

• Current Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Inventors: Shimotani, Mitsuo, Umezu, Masaharu, Mikuriya, Makoto, Ikeuchi, Tomoya
• Application Number:
  US11/023,543
• Publication Number:
  US 20050114019A1
• Time in Patent Office: Days
• US Class Current: 701/210
• CPC Class Codes: G01C 21/3859 Differential updating map data
• CPC Class Codes: G01C 21/3881 Tile-based structures
• CPC Class Codes: Y10S 707/99953 Recoverability

Abstract

A map data processing unit includes a batch update section and dynamic update section. A type of update data fed from an update data input section is decided using header information. If the update data is route search data, the batch update section collectively updates all the map data to latest version map data according to the update data from the update data input section. If the update data is not the route search data, the dynamic update section updates the map data to the latest version map data according to the update data every time the map data becomes necessary. Thus performing the collective or dynamic update according to the type of the update data enables the update to the latest map data without affecting the operation speed of a navigation function, with minimizing the time precluding the use of the navigation function.

Claims

1-13. -13. (canceled)

14. A map data processing unit comprising:

an update data input section for inputting update data for updating old version map data to latest version map data;

an update data recording section for recording the update data input by said update data input section;

an update section for updating, when a map data request from an application occurs, the old version map data to the latest version map data in accordance with the old version map data and the update data stored in said update data recording section, which old version map data and update data correspond to the map data associated with the map data request from the application;

a map data storing section for storing the map data;

a display section for displaying a processing result of the map data;

a manipulation section for performing input manipulation for processing the map data; and

a control section for carrying out overall control.