METHOD, DEVICE AND VEHICLE UTILIZING THE SAME

• US 20080270024A1
• Filed: 04/30/2007
• Published: 10/30/2008
• Est. Priority Date: 04/30/2007
• Status: Active Grant

• Current Assignee: MediaTek, Inc.
• Original Assignee: MediaTek, Inc.
• Inventors: Hsu, Chao Chieh, Chen, Hong-Hui, Huang, Peng-Chuan
• Granted Patent: US 7,826,968 B2
• Time in Patent Office: Days
• US Class Current: 701/207
• CPC Class Codes: G01C 21/26 specially adapted for navigation in a road network
• CPC Class Codes: G01S 19/34 Power consumption

Abstract

A global positioning system (GPS) device including an antenna and a baseband unit is disclosed. The antenna receives a wireless signal group. The baseband unit processes the wireless signal group to generate a position signal. The position signal is updated every time interval. The duration of the time interval is changed dynamically.

Claims

1. A global positioning system (GPS) device, comprising:

an antenna receiving a wireless signal group; and

a baseband unit processing the wireless signal group to generate a position signal, wherein the position signal is updated every time interval, and the duration of the time interval is changed dynamically.

2. The GPS device as claimed in claim 1, wherein the duration of the time interval is changed dynamically according to a speed of movement of the GPS device.

3. The GPS device as claimed in claim 2, wherein the duration of the time interval is reduced when the speed of movement of the GPS device exceeds a preset value.

4. The GPS device as claimed in claim 1, further comprising a battery, wherein the duration of the time interval is changed dynamically according to a remaining capacity of a battery of the GPS device.

5. The GPS device as claimed in claim 4, wherein the duration of the time interval is reduced when the remaining capacity of the battery exceeds a preset value.

6. The GPS device as claimed in claim 1, wherein the wireless signal group is provided by at least two satellites.

7. The GPS device as claimed in claim 6, wherein the duration of the time interval is reduced when the number of the satellites exceeds a preset value.

8. The GPS device as claimed in claim 1, further comprising a navigation unit providing a control signal to the baseband unit according to the position signal and map information.

9. The GPS device as claimed in claim 8, wherein the duration of the time interval is changed dynamically according to the control signal.

10. A vehicle providing a direction signal to the GPS device as claimed in claim 1, wherein the baseband unit generates the position signal according to the processed result and the direction signal.

11. A method for a global positioning system (GPS) device, comprising:

receiving a wireless signal group;

processing the wireless signal group to generate a position signal; and

updating the position signal every time interval, wherein the duration of the time interval is changed dynamically.

12. The method as claimed in claim 11, wherein the duration of the time interval is dynamically changed according to a speed of movement of the GPS device.

13. The method as claimed in claim 12, wherein the duration of the time interval is reduced when the speed of movement of the GPS device exceeds a preset value.

14. The method as claimed in claim 11, wherein the duration of the time interval is changed dynamically according to a remaining capacity of a battery of the GPS device.

15. The method as claimed in claim 14, wherein the duration of the time interval is reduced when the remaining capacity of the battery exceeds a preset value.

16. The method as claimed in claim 11, wherein the wireless signal group is provided by at least two satellites.

17. The method as claimed in claim 16, wherein the duration of the time interval is changed dynamically according to a number of the satellites.

18. The method as claimed in claim 17, wherein the duration of the time interval is reduced when the number of the satellites exceeds a preset value.

19. The method as claimed in claim 11, wherein the duration of the time interval is changed dynamically according to a movement path of the GPS device.

20. The method as claimed in claim 19, wherein the duration of the time interval is reduced when the GPS device moves in a single direction.