METHOD FOR MATCHING VIRTUAL MAP AND SYSTEM THEREOF

• US 20100241353A1
• Filed: 12/10/2007
• Published: 09/23/2010
• Est. Priority Date: 05/16/2007
• Status: Active Grant

• Current Assignee: Inavi Systems Corporation
• Original Assignee: Thinkware Systems Corporation
• Inventors: Park, Sada
• Granted Patent: US 8,386,171 B2
• Time in Patent Office: Days
• US Class Current: 701/208
• CPC Class Codes: G01C 21/30 Map- or contour-matching

Abstract

A method of matching a virtual map, the method including: receiving Global Positioning System (GPS) information; generating a basic map matching result using the GPS information; generating a virtual map matching location based on the basic map matching result; and displaying the virtual map matching location.

Claims

1. A method of matching a virtual map, the method comprising:

receiving Global Positioning System (GPS) information;

generating a basic map matching result using the GPS information;

generating a virtual map matching location based on the basic map matching result; and

displaying the virtual map matching location.

2. The method of claim 1, wherein the generating of the virtual map matching location comprises:

calculating a movement distance using a speed based on the GPS information and a split time generated by virtual map matching; and

reflecting the movement distance on the basic map matching result and generating the virtual map matching location.

3. The method of claim 1, wherein the generating of the virtual map matching location generates the virtual map matching location according to an expected movement distance, a location, and a vehicle direction based on the basic map matching result.

4. The method of claim 1, wherein, when a retrieved route exists, the generating of the virtual map matching location divides an angle of a vehicle when turning left or when turning right by a predetermined number, and generates the virtual map matching location.

5. The method of claim 1, wherein the generating of the virtual map matching location divides an angle of a vehicle by a number of virtual map matching generations using a difference between an angle with respect to a first link and an angle with respect to a second link, and generates the virtual map matching location.

6. The method of claim 1, wherein the generating of the virtual map matching location reflects a change of a speed using an average value of speeds from a current time to a predetermined time, the speeds being used for generating the virtual map matching location, and generates the virtual map matching location.

7. The method of claim 1, wherein the generating of the virtual map matching location compares a location based on the basic map matching result and a location based on a virtual map matching result, and discards the virtual map matching result when the location based on the virtual map matching result is further than the location based on the basic map matching result.

8. A computer-readable recording medium storing a program for implementing the method according to claim 1.

9. A system for matching a virtual map, the system comprising:

a GPS receiving unit to receive GPS information;

a basic map matching unit to generate a basic map matching result using the GPS information;

a virtual map matching unit to generate a virtual map matching location based on the basic map matching result; and

a display unit to display the virtual map matching location.

10. The system of claim 9, wherein the virtual map matching unit comprises:

a calculation unit to calculate a movement distance using a speed based on the GPS information and a split time generated by virtual map matching; and

a generation unit to reflect the movement distance on the basic map matching result and to generate the virtual map matching location.

11. The system of claim 9, wherein, when a retrieved route exists, the virtual map matching unit divides an angle of a vehicle when turning left or when turning right by a predetermined number, and generates the virtual map matching location.

12. The system of claim 9, wherein the virtual map matching unit divides an angle of a vehicle by a number of virtual map matching generations using a difference between an angle with respect to a first link and an angle with respect to a second link, and generates the virtual map matching location.

13. The system of claim 9, wherein the virtual map matching unit reflects deceleration of a speed using an average value of speeds from a current time to a predetermined time, the speeds being used for generating the virtual map matching location, and generates the virtual map matching location.

14. The system of claim 9, wherein the virtual map matching unit compares a location based on the basic map matching result and a location based on a virtual map matching result, and discards the virtual map matching result when the location based on the virtual map matching result is further than the location based on the basic map matching result.