Method, system and apparatus for proximity-based recharge notification

• US 6,323,775 B1
• Filed: 08/10/1999
• Issued: 11/27/2001
• Est. Priority Date: 08/10/1999
• Status: Expired due to Fees

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Hansson, Hans Magnus
• Primary Examiner(s): SWARTHOUT, BRENT
• Application Number:
  US09/370,448
• Time in Patent Office: 840 Days
• Field of Search: 340/636, 340/988, 340/995, 340/457.4, 901/1, 235/384, 701/22, 701/213, 414/227, 320/2, 320/48, 320/112, 320/107
• US Class Current: 340/636.1
• CPC Class Codes: H04M 1/72412 using two-way short-range wireless interfaces

Abstract

An apparatus, system and method notifies a user of a low battery condition when the remaining battery capacity of a portable electronic device, such as a mobile station, pager, portable computer, video camera, or personal digital assistant, falls below a predetermined level and the portable electronic device is proximally located to a corresponding charging unit. The proximity of the portable electronic device to the charging unit may be detected by using geographic positioning, such as the GPS, the GLONASS or the GSM location-determining algorithms, or by monitoring a short range radio interface, such as Bluetooth or Home RF.

Claims

1. A portable battery-operated electronic device, comprising:

a proximity detector, said proximity detector enabling determination of a proximity criterion for said electronic device and at least one corresponding charging unit;

a controller coupled to said proximity detector, said controller initiating a user notification only when said controller determines that a remaining battery capacity of said electronic device satisfies a predetermined condition and that said proximity criterion is valid; and

said criterion is valid when said electronic device is within a prespecified range of said at least one corresponding charging unit.

2. The portable battery-operated electronic device according to claim 1, wherein said predetermined condition comprises falling, below a 40 percent charge level.

3. The portable battery-operated electronic device according to claim 1, wherein said prespecified range is selected from a group comprising approximately 10 meters and approximately 100 meters of said at least one corresponding charging unit.

4. The portable battery-operated electronic device according to claim 1, wherein said controller determines that said proximity criterion is valid based, at least in part, on geographic positioning.

5. The portable battery-operated electronic device according to claim 4, wherein said proximity detector comprises a Global Positioning System (GPS) receiver.

6. The portable battery-operated electronic device according to claim 4, further comprising location data stored within said electronic device, said location data corresponding to a geographic location of said at least one corresponding charging unit.

7. The portable battery-operated electronic device according to claim 6, wherein said controller compares a present geographic location of said electronic device determined by said proximity detector with said location data to determine whether said proximity criterion is valid.

8. The portable battery-operated electronic device according to claim 6, wherein said location data is entered by user input of location coordinates.

9. The portable battery-operated electronic device according to claim 6, wherein said location data is entered automatically by said controller in response to a user input.

10. The portable battery-operated electronic device according to claim 5, wherein said GPS receiver comprises an external module that communicates with said controller via at least one of an electrical connector and an infrared (IR) link.

11. The portable battery-operated electronic device according to claim 4, wherein said geographic positioning is performed in accordance with a Global System for Mobile communications (GSM) location-determining algorithm.

12. The portable battery-operated electronic device according to claim 4, wherein said geographic positioning is performed in accordance with Global Navigation Satellite System (GLONASS) specifications.

13. The portable battery-operated electronic device according to claim 1, wherein said proximity detector comprises a short range radio interface device, and wherein said controller determines that said proximity criterion is valid by, at least in part, monitoring said short range radio interface device.

14. The portable battery-operated electronic device according to claim 13, wherein said short range radio interface device is configured to operate in accordance with Bluetooth specifications.

15. The portable battery-operated electronic device according to claim 14, further comprising identification data stored within said electronic device corresponding to a Bluetooth identity of said at least one corresponding charging unit.

16. The portable battery-operated electronic device according to claim 15, wherein said controller compares a received identification with said identification data to determine whether said proximity criterion is valid.

17. The portable battery-operated electronic device according to claim 16, wherein said received identification is in response to at least one of an acknowledgment signal and an inquiry signal transmitted by said electronic device.

18. The portable battery-operated electronic device according to claim 13, wherein said short range radio interface device operates in accordance with Home RF specifications.

19. A system for a rechargeable, battery-operated electronic device, comprising:

a battery-operated electronic device;

at least one charging unit associated with said battery-operated electronic device;

a proximity detector, said proximity detector enabling determination of a proximity criterion for said battery-operated electronic device and said at least one charging unit; and

a controller coupled to said proximity detector, said controller initiating a user notification only when said controller determines that a remaining battery capacity of said battery-operated electronic device satisfies a predetermined condition, and that said proximity criterion is valid based, at least in part, on monitoring a short-range radio interface device.

20. The system for a rechargeable, battery-operated electronic device according to claim 19, wherein said battery-operated electronic device includes identification data stored within said battery-operated electronic device corresponding to a Bluetooth identity of said at least one corresponding charging unit.

21. The system for a rechargeable, battery-operated electronic device according to claim 20, wherein said controller compares a received identification with said identification data to determine whether said proximity criterion is valid.

22. The system for a rechargeable, battery-operated electronic device according to claim 21, wherein said received identification is in response to at least one of an acknowledgment signal and an inquiry signal transmitted by said electronic device.

23. A method for notifying a user of a low battery condition of a battery-operated electronic device, comprising the steps of:

determining, in response to said low battery condition of said battery-operated electronic device, whether a proximity criterion for said battery-operated electronic device and at least one corresponding charging unit is valid; and

generating a user notification only when said proximity criterion is valid, said proximity criterion being valid when said electronic device is within a prespecified range of said at least one corresponding charging unit.

24. The method for notifying a user of a low battery condition of a battery-operated electronic device according to claim 23, wherein said low battery condition comprises a remaining battery capacity associated with said battery-operated electronic device falling below a 40 percent charge level.

25. The method for notifying a user of a low battery condition of a battery-operated electronic device according to claim 23, wherein said prespecified range is selected from a group comprising approximately 10 meters and approximately 100 meters.

26. The method for notifying a user of a low battery condition of a battery-operated electronic device according to claim 23, wherein the step of determining comprises determining a geographic position.

27. The method for notifying a user of a low battery condition of a battery-operated electronic device according to claim 23, wherein the step of determining comprises the steps of:

determining a present geographic position of said battery-operated electronic device;

comparing said present geographic position of said battery-operated electronic device to a stored geographic location of said at least one corresponding charging unit; and

determining that said proximity criterion is valid if said present geographic position is within a predetermined distance from said stored geographic location.

28. The method for notifying a user of a low battery condition of a battery-operated electronic device according to claim 27, wherein the step of determining said present geographic position is performed using a Global Positioning System (GPS) receiver.

29. The method for notifying a user of a low battery condition of a battery-operated electronic device according to claim 27, wherein the step of determining said present geographic position is performed in accordance with at least one of Global System for Mobile communications (GSM) specifications and Global Navigation Satellite System (GLONASS) specifications.

30. The method for notifying a user of a low battery condition of a battery-operated electronic device according to claim 23, wherein the step of determining comprises monitoring a short range radio interface associated with said battery-operated electronic device.

31. The method for notifying a user of a low battery condition of a battery-operated electronic device according to claim 23, wherein the step of determining comprises the steps of:

transmitting a signal;

detecting at least one identification received by a short range radio interface in response to said signal;

comparing said at least one identification to a stored list including at least one identity corresponding to said at least one corresponding charging unit; and

determining that said proximity criterion is valid if said at least one identification is within said stored list that includes said at least one identity.

32. The method for notifying a user of a low battery condition of a battery-operated electronic device according to claim 31, wherein said signal comprises an acknowledgment signal transmitted by said battery-operated electronic device in response to a page signal transmitted by said at least one corresponding charging unit.

33. The method for notifying a user of a low battery condition of a battery-operated electronic device according to claim 31, wherein said signal comprises an inquiry signal transmitted by said battery-operated electronic device to devices within transmission range.

34. The method for notifying a user of a low battery condition of a battery-operated electronic device according to claim 31, wherein said short range radio interface operates in accordance with at least one of Bluetooth specifications and Home RF specifications.