Navigation device and its navigation method for displaying navigation information according to traveling direction

• US 7,966,124 B2
• Filed: 10/10/2007
• Issued: 06/21/2011
• Est. Priority Date: 10/13/2006
• Status: Active Grant

• Current Assignee: Modena Navigation LLC (Alpha Alpha Intellectual Partners LLC)
• Original Assignee: MiTAC International Corporation (MiTAC Holdings Corp.)
• Inventors: Liu, Neng
• Primary Examiner(s): Beaulieu; Yonel
• Application Number:
  US11/870,078
• Publication Number:
  US 20080091349A1
• Time in Patent Office: 1,350 Days
• Field of Search: 701/200, 701/211, 701213-215, 340/995.1, 340/995.14
• US Class Current: 701/211
• 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: G09B 29/106 using electronic means

Abstract

A navigation method applied to a navigation device is used to display navigation information according to a traveling direction of the navigation device. The navigation information frame displayed is dynamically adjusted according to the traveling direction of the device, and in particular, the display position of the current position and the display scale of a corresponding displayed section of the navigation map are dynamically adjusted, so as to provide much more navigating route information and the points of interest in the identical size display area of a navigation information.

Claims

1. A navigation method for displaying navigation information according to a traveling direction of a navigation device, comprising the following steps:

receiving at least one positioning signal from a positioning system, and retrieving a current position of the navigation device according to the positioning signal, for determining a direction parameter according the traveling direction of the navigation device;

determining a destination on a navigation map and generating a navigation route for navigating from the current position to the destination;

initializing the current position and the navigation map to generate a first displaying parameter of the current position and a second displaying parameter of the navigation map;

dynamically adjusting the first displaying parameter of the current position according to the direction parameter;

dynamically adjusting the second displaying parameter of the navigation map according to the first displaying parameter; and

displaying the current position according to the first displaying parameter, and fetching a corresponding displayed section of the navigation map according to the second displaying parameter and displaying the corresponding displayed section of navigation map in a navigation information frame.

2. The navigation method as claimed in claim 1, wherein the first displaying parameter is a pixel coordinate for the current position to be displayed on the navigation information frame.

3. The navigation method as claimed in claim 1, wherein the second displaying parameter is a display scale of the corresponding displayed section of the navigation map to be displayed on the navigation information frame, and the second displaying parameter is generated with the change of the first displaying parameter of the current position.

4. The navigation method as claimed in claim 1, wherein the direction parameter has reverse relation with the first displaying parameter, and the direction parameter has positive relation with the second displaying parameter.

5. The navigation method as claimed in claim 1, further comprising a step of generating a traveling direction icon in the navigation information frame according to the direction parameter.

6. The navigation method as claimed in claim 1, further comprising a step of receiving the direction parameter through a direction switch unit.

7. A navigation device for displaying navigation information according to a traveling direction thereof, comprising:

a memory for storing a navigation map;

a signal receiving unit for receiving at least one positioning signals from a positioning system via an antenna;

a central processing unit electrically connected to the signal receiving unit and the memory, for retrieving the current position according to the received positioning signals;

wherein the central processing unit dynamically adjusts a first displaying parameter of the current position and a second displaying parameter of the navigation map, and fetches a corresponding displayed section of the traveling direction of navigation map according to the second displaying parameter when a direction parameter of the current position is changed; and

a displaying unit for displaying the current position and the navigation map in a navigation information frame according to the first displaying parameter and the second displaying parameter.

8. The navigation device as claimed in claim 7, wherein the first displaying parameter is a pixel coordinate for the current position to be displayed on the navigation information frame.

9. The navigation device as claimed in claim 7, wherein the second displaying parameter is a display scale of the corresponding displayed section of the navigation map to be displayed on the navigation information frame, the second displaying parameter is generated with the change of the first displaying parameter of the current position.

10. The navigation device as claimed in claim 7, wherein the direction parameter has reverse relation with the first displaying parameter, and the direction parameter has positive relation with the second displaying parameter.

11. The navigation device as claimed in claim 7, wherein the displaying unit further displays a traveling direction icon in the navigation information frame according to the direction parameter.

12. The navigation device as claimed in claim 7, further comprising a direction switch unit electrically connected to the central processing unit.

13. The navigation device as claimed in claim 12, wherein the direction switch units is used to generate the direction parameter to the central processing unit.

14. The navigation device as claimed in claim 7, wherein the central processing unit generates a navigation route for navigation from the current position to a destination, the displaying unit displays the current position according to the first displaying parameter, and the central processing unit fetches the corresponding navigation map according to the second displaying parameter for the displaying unit to display in the navigation information frame.