POWER SAVING SYSTEM AND METHOD FOR MOBILE COMPUTING DEVICE

• US 20110050503A1
• Filed: 08/27/2009
• Published: 03/03/2011
• Est. Priority Date: 08/27/2009
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Palm, Inc. (TCL Technology Group Corp.)
• Inventors: Paulson, Janell, Fong, Thomas
• Granted Patent: US 8,228,234 B2
• Time in Patent Office: Days
• US Class Current: 342/451
• CPC Class Codes: G01C 21/26 specially adapted for navigation in a road network
• CPC Class Codes: G01S 19/34 Power consumption
• CPC Class Codes: G01S 5/01 Determining conditions which influence positioning, e.g. radio environment, state of motion or energy consumption
• CPC Class Codes: G06F 1/3203 Power management, i.e. event-based initiation of a power-saving mode
• CPC Class Codes: H04L 67/52 specially adapted for the location of the user terminal
• CPC Class Codes: H04M 1/72457 according to geographic location
• CPC Class Codes: H04M 2250/10 including a GPS signal receiver
• CPC Class Codes: H04W 4/02 Services making use of location information
• CPC Class Codes: H04W 4/023 using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
• CPC Class Codes: H04W 4/024 Guidance services
• CPC Class Codes: H04W 4/026 using orientation information, e.g. compass
• CPC Class Codes: H04W 4/027 using movement velocity, acceleration information
• CPC Class Codes: H04W 4/029 Location-based management or tracking services
• CPC Class Codes: H04W 4/20 Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
• CPC Class Codes: H04W 52/0261 managing power supply demand, e.g. depending on battery level
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A mobile computing device includes a housing, a processor provided within the housing, and a location-determining system configured to determine a current location of the mobile computing device at a first rate. The location determining system may be configured to adjust the first rate to a different second rate based on a threshold distance value and a distance from the current location to an anticipated future location of the mobile computing device.

Claims

1. A mobile computing device comprising:

a housing;

a processor provided within the housing; and

a location-determining system configured to determine a current location of the mobile computing device at a first rate, wherein the location determining system is configured to adjust the first rate to a different second rate based on a threshold distance value and a distance from the current location to an anticipated future location of the mobile computing device;

wherein power consumption associated with the first rate is different than power consumption associated with the second rate.

2. The mobile computing device of claim 1, wherein the location determining system is configured to adjust the first rate to a different second rate when the distance from the current location to the future location exceeds a threshold distance value, wherein the second rate is slower than the first rate.

3. The mobile computing device of claim 2, wherein the location determining system is configured to adjust the second rate back to the first rate upon determining that the current location is less than or equal to the threshold distance value.

4. The mobile computing device of claim 2, wherein the location determining system is configured to adjust the second rate back to the first rate after a period of time, the period of time being determined based on the distance from the current location to the future location.

5. The mobile computing device of claim 2, wherein the location determining system is configured to monitor a street density along a route traveled by the mobile computing device and adjust the second rate back to the first rate upon determining that a street density of a geographic area exceeds a threshold density value.

6. The mobile computing device of claim 2, wherein the threshold distance value is a first distance value, and the location determining system is configured to adjust the second rate back to the first rate upon determining that the distance from the current location to the future location is less than or equal to a second distance value, the second distance value being less than the first distance value.

7. The mobile computing device of claim 2, wherein the threshold distance value is a first threshold distance value, and wherein the location determining system is configured to instruct the processor to utilize additional power savings features upon determining that the distance from the current location to the future location is greater than a second threshold distance value, the second threshold distance value being greater then the first threshold distance value.

8. The mobile computing device of claim 7, wherein the additional power savings features include at least one of

a reduction of the second rate to a slower third rate;

a reduction of power supplied to a display screen; and

a reduction in the frequency of voice or display prompts generated by the mobile computing device.

9. The mobile computing device of claim 1, wherein the location determining system is configured to adjust the first rate to the second rate based further on the familiarity of a user of the mobile computing device with a driving route between the current location and the future location, the familiarity of the user being based on stored historic travel data associated with the mobile computing device.

10. The mobile computing device of claim 9, wherein the location determining system is configured to adjust the first rate to the second rate based further on a speed of the mobile computing device.

11. The mobile computing device of claim 1, wherein the location determining system is configured to receive an input from a user indicating that the user wishes the location determining system to adjust the first rate to the second rate, the second rate being slower than the first rate.

12. The mobile computing device of claim 1, wherein the location determining system comprises a Global Positioning System.

13. A mobile computing device comprising:

a housing;

a processor provided within the housing; and

a location-determining system coupled to the processor and configured to determine the location of the mobile computing device at each of a plurality of different points in time, wherein adjacent points in time are separated by a period of time, and wherein the location determining system is configured to adjust the period of time based on a current location of the mobile computing device and an anticipated future location of the mobile computing device;

wherein adjustment of the period of time causes a change in power consumption by the mobile computing device.

14. The mobile computing device of claim 13, wherein the location determining system is further configured to identify the future location by determining that at least one of a speed and a direction of the mobile computing device is expected to remain substantially constant while the mobile computing device travels between the current location and the future location.

15. The mobile computing device of claim 14, wherein the future location is one of a plurality of locations provided along a driving route calculated by a navigation application running on the mobile computing device.

16. The mobile computing device of claim 13, wherein the location determining system is configured to increase the period of time based on determining that a distance between the current location and the future location exceeds a threshold distance value.

17. The mobile computing device of claim 16, wherein the location determining system is configured to increase the period of time in an amount determined based on the distance between the current location and the future location.

18. A method comprising:

determining a current location of a mobile device periodically at a first rate;

determining an anticipated future location of the mobile device; and

adjusting the first rate based on a threshold distance value and a distance from the current location of the mobile computing device to the anticipated future location of the mobile computing device;

wherein adjusting the first rate causes a change in power consumption by the mobile computing device.

19. The method of claim 18, further comprising decreasing the first rate in response to determining that the distance from the current location to the future location exceeds the threshold distance value.

20. The method of claim 19, further comprising determining whether a user is familiar with a route between the current location and the future location and adjusting the first rate based on the level of familiarity

21. The method of claim 20, further comprising prompting a user for an input indicating whether the user wishes to adjust the first rate.

22. The method of claim 20, further comprising adjusting the first rate based further on a speed of the mobile computing device and a time threshold determined based on the speed of the mobile computing device.

23. A computer-readable storage medium having stored therein machine-readable instructions for causing, when executed, one or more machines to perform the following method steps:

determining a current location of a mobile device periodically at a first rate;

determining an anticipated future location of the mobile device; and

adjusting the first rate based on a threshold distance value and a distance from the current location of the mobile computing device to the anticipated future location of the mobile computing device;

wherein adjusting the first rate causes a change in power consumption by the mobile computing device.

24. The computer-readable storage medium of claim 23, further comprising decreasing the first rate in response to determining that the distance from the current location to the future location exceeds the threshold distance value.

25. The computer-readable storage medium of claim 23, further comprising determining whether a user is familiar with a route between the current location and the future location and adjusting the first rate based on the level of familiarity.

26. The computer-readable storage medium of claim 23, further comprising prompting a user for an input indicating whether the user wishes to adjust the first rate.