Navigation device

• US 20020173859A1
• Filed: 11/26/2001
• Published: 11/21/2002
• Est. Priority Date: 05/18/2001
• Status: Active Grant

• Current Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Inventors: Kishigami, Keiju
• Granted Patent: US 7,185,021 B2
• Time in Patent Office: Days
• US Class Current: 700/1
• CPC Class Codes: G01C 21/367 Details, e.g. road map scale, orientation, zooming, illumination, level of detail, scrolling of road map or positioning of current position marker
• CPC Class Codes: Y10S 707/99942 Manipulating data structure, e.g. compression, compaction, compilation
• CPC Class Codes: Y10S 707/99943 Generating database or data structure, e.g. via user interface
• CPC Class Codes: Y10S 707/99944 Object-oriented database structure
• CPC Class Codes: Y10S 707/99945 Object-oriented database structure processing
• CPC Class Codes: Y10S 707/99948 Application of database or data structure, e.g. distributed, multimedia, or image

Abstract

There is disclosed a navigation device designed to display emphasis display data edited by an emphasis display data editing part and normal display data edited by a normal display data editing part in a superposing manner. Thus, a clear visible map can be displayed.

Claims

1. A navigation device comprising:

map storing means for storing map data of plurality of years;

specifying means for specifying a year to be displayed;

first display editing means for reading map data of a year specified by said specifying means from said map storing means, and editing the map data to be displayed in the first display mode as a first display data;

second display editing means for reading map data other than that of the year specified by said specifying means from said map storing means, and editing the map data to be displayed in the second display mode as a second normal display data; and

displaying means for displaying the first display data edited by said first display editing means and the second display data edited by said second display editing means in a superposing manner.

2. A navigation device according to claim 1, wherein as the map data other than that of the year specified by said specifying means, latest map data is read out.

3. A navigation device according to claim 1, wherein when among data items included in the map data, a data item to be displayed with emphasis is specified by said specifying means, said first display editing means functions as an emphasis display editing means and edits only the specified data item to be emphasis display data, and other data items to be normal display data.

4. A navigation device according to claim 3, wherein the data item specified by said specifying means is one selected from road information, facility information, address information and telephone number information.

5. A navigation device according to claim 1, wherein when among data items included in the map data, a data item to be displayed in the normal display mode is specified by said specifying means, said second display editing means functions as a normal display editing means and edits only the specified data item to be normal display data, and other data items to be weak display data.

6. A navigation device according to claim 5, wherein the data item specified by said specifying means is one selected from road information, facility information, address information and telephone number information.

10. A navigation device according to claim 1, further comprising:

searching means for searching, when a year and a data item are specified by said specifying means, an updated portion of the map data based on the specified year and data item.

11. A navigation device according to claim 10, wherein the data item specified by said specifying means is one selected from road information, facility information, address information and telephone number information.

7. A navigation device comprising:

map storing means for storing map data of a plurality of years;

specifying means for specifying a year to be displayed;

editing means for reading map data of the year specified by said specifying means from said map storing means, and editing the map data to be display data; and

displaying means for displaying the display data edited by said editing means.

8. A navigation device comprising:

map storing means for storing map data of a plurality of years;

specifying means for specifying a year to be displayed;

first editing means for reading map data of the year specified by said specifying means from said map storing means, and editing the map data to be display data;

second editing means for reading map data other than that of the year specified by said specifying means from said map storing means, and editing the map data to be display data; and

displaying means for displaying the display data edited by said first editing means in a first display area, and the display data edited by said second editing means in a second display area.

9. A navigation device according to claim 8, wherein as the map data other than that of the year specified by said specifying means, latest map data is read out.