Method, device and vehicle utilizing the same

• US 7,826,968 B2
• Filed: 04/30/2007
• Issued: 11/02/2010
• 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
• Primary Examiner(s): Nguyen; Tan Q
• Application Number:
  US11/741,926
• Publication Number:
  US 20080270024A1
• Time in Patent Office: 1,282 Days
• Field of Search: 701/213, 701/214, 701/207, 701/209, 340/992, 340/993, 342/357.12
• US Class Current: 701/213
• 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 from at least two satellites; 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 according to at least one of;

a remaining capacity of a power source of the GPS device,

a number of the satellites, and

a movement path of the GPS device.

2. The GPS device as claimed in claim 1, wherein the duration of the time interval is reduced when the remaining capacity of the battery exceeds a preset value.

3. The GPS device as claimed in claim 1, 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, wherein the duration of the time interval is reduced when the GPS device moves in a single direction.

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

receiving a wireless signal group from at least two satellites;

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 according to at least one of;

a remaining capacity of a power source of the GPS device,

a number of the satellites, and

a movement path of the GPS device.

5. The method 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 method as claimed in claim 4, wherein the duration of the time interval is reduced when the number of the satellites exceeds a preset value.

7. The method as claimed in claim 4, wherein the duration of the time interval is reduced when the GPS device moves in a single direction.

9. A baseband unit of a global positioning system (GPS) device with an antenna receiving a wireless signal group from at least two satellites, said 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 according to at least one of:

a remaining capacity of a power source of the GPS device,

a number of the satellites, and

a movement path of the GPS device.