Wireless piconet-based personal electronic property reminder

• US 6,462,660 B1
• Filed: 01/25/2001
• Issued: 10/08/2002
• Est. Priority Date: 01/25/2001
• Status: Expired due to Term

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Agere Systems Guardian Corp. (Broadcom, Inc.)
• Inventors: Johanson, James A., Mooney, Philip D., Cannon, Joseph M.
• Primary Examiner(s): TRIEU, VAN THANH
• Application Number:
  US09/768,787
• Time in Patent Office: 621 Days
• Field of Search: 340/425.5, 340/426, 340/531, 340/539, 340/568.1, 340/573.1, 340/666, 340/691.1, 340/691.6, 340/7.27, 340/7.28, 340/311.2, 340/988
• US Class Current: 340/572.1
• CPC Class Codes: G08B 13/1427 with transmitter-receiver for distance detection
• CPC Class Codes: G08B 21/0216 Alarm cancellation after generation
• CPC Class Codes: G08B 21/0227 System arrangements with a plurality of child units
• CPC Class Codes: G08B 21/0247 System arrangements wherein the alarm criteria uses signal strength

Abstract

An system and method of reminding a user of any missing portable electronic devices when leaving a location. A reminder device transmits a signal to each of the reminder enabled devices. The reminder device then alerts the user of any reminder enabled devices that did not transmit acknowledgement signals.

Claims

1. A system for detecting presence or absence of a portable electronic device, said detection system comprising:

at least one portable electronic device; and

a reminder device for transmitting a signal to said portable electronic device;

said at least one portable electronic device, based on predetermined conditions, receiving said signal and sending a response signal to said reminder device; and

said reminder device providing a notification indicating the presence or absence of said at least one portable electronic device within a specified proximity to said reminder device based on said response signal.

2. The system as in claim 1, wherein said reminder device includes a control circuit.

3. The system as in claim 2, wherein said control circuit is a microprocessor.

4. The system as in claim 1, wherein said reminder device is provided at a specific location where detection of the presence or absence of said portable electronic device is desired.

5. The system as in claim 4, wherein said location is an automobile.

6. The system as in claim 5, wherein the activation event is the starting of said automobile.

7. The system as in claim 5, wherein said activation event is opening of a door of said automobile.

8. The system as in claim 4, wherein said reminder device is located in a building.

9. The system as in claim 8, wherein said activation event is the opening of a door of said building.

10. The system as in claim 9, wherein said door is a garage door of said building.

11. The system as in claim 1, wherein said reminder device includes a clock and said activation event is a pre-determined time.

12. The system as in claim 1, wherein said reminder device only provides said first signal on user-selected days of the week.

13. The system as in claim 1, wherein said portable electronic device comprises a transferable tag.

14. The system as in claim 1, wherein said reminder device further comprises:

a storage device to store identification information for said portable electronic device.

15. The system of claim 14, wherein said reminder device further comprises:

an input device to allow a user to input said identification information for said portable electronic device.

16. The system as in claim 1, wherein each of said reminder device and said portable electronic device includes a radio transceiver, and said first signal and said second response signal are radio signals.

17. The system as in claim 16, wherein said transceiver devices are Bluetooth™

compliant.

18. The system as in claim 1, further comprising a plurality of portable electronic devices, said reminder device transmitting a first signal to said plurality of portable electronic devices in response to the occurrence of said activation event, each of said plurality of portable electronic devices that receive said first signal providing a second response signal, said reminder device providing said notification if at least one of said plurality of portable electronic devices does not provide said second response signal.

19. The system as in claim 18, wherein said second response signal contains said identification information.

20. The system as in claim 19, wherein said reminder device further comprises:

a storage device to store identification information for said plurality of portable electronic devices.

21. The system as in claim 20, wherein said reminder device further comprises:

an input device to allow a user to input identification information for said plurality of portable electronic devices.

22. The system as in claim 21, wherein said reminder device determines which of said plurality of portable electronic devices transmitted said second response by comparing said identification information contained in said second response signal to identification information stored in said storage device.

23. The system as in claim 18, wherein said notification is a list of which of said portable electronic devices did not transmit said second response signal.

24. The system as in claim 18, wherein said notification is provided if at least one of said plurality of portable electronic devices that are supposed to be present does not provide said second response signal.

25. The system as in claim 24, herein said reminder device checks if each of said plurality of electronic devices transmitting said second response signal should be absent and providing said notification if at least one of said plurality of electronic devices transmitting said second response signal should be absent.

26. The system as in claim 25, wherein said reminder device transmits a third signal to an electronic calendar and detects a fourth response signal from said electronic calendar containing a list of which of said portable electronic devices should be present.

27. The system as in claim 26, wherein said list also contains which of said portable electronic devices should be absent.

28. The system as in claim 1, wherein said portable electronic device is a laptop computer.

29. The system as in claim 1, wherein said portable electronic device is a cellular telephone.

30. The system as in claim 1, wherein said portable electronic device is a MP3 player.

31. The system as in claim 1, wherein said portable electronic device is a pager.

32. The system as in claim 1, wherein said portable electronic device is a PDA.

33. The system as in claim 1, wherein said transmission of said first and second signals have a limited range.

34. The system as in claim 1, wherein said reminder device provides said notification if said response signal'"'"'s strength is below a threshold.

35. The system as in claim 1, wherein said response signal contains said at least one portable electronic device'"'"'s location as determined by a global positioning satellite.

36. The system as in claim 35, wherein said reminder device provides said notification if the distance from said reminder device to said at least one portable electronic device is greater than a user defined distance as determined by the locations obtained from a global positioning satellite.

37. The system as in claim 1, wherein said notification is provided if said second response signal is received.

38. A portable electronic device comprising:

a transceiver;

a controller coupled to said transceiver; and

an information storage device coupled to said controller to store device identification information associated with said portable electronic device;

wherein when said transceiver receives a signal containing device identification information from a reminder device, said controller verifies whether said device identification information contained in said signal matches the stored device identification information associated with said portable electronic device and, if it does, said controller causes said transceiver to transmit a response signal indicating to said reminder device the presence or absence of said portable electronic device within a specified proximity to said reminder device.

39. A device as in claim 38, further comprising an input device for inputting said device identification information associated with said portable electronic device to said information storage device.

40. A device as in claim 38, wherein said device identification information stored in said information storage device is stored using an input device equipped with a transceiver that transmits said information to said portable electronic device.

41. A device as in claim 38, wherein said information stored in said information storage device is stored using an input device attached to a reminder device, said reminder device transmitting a signal containing said information.

42. A device as in claim 38, wherein said transceiver is Bluetooth™

compliant.

43. A device as in claim 38, wherein said controller is a microprocessor.

44. A reminder device comprising:

a transceiver;

a controller coupled to said transceiver;

an information storage device coupled to said controller; and

a user alert device coupled to said controller;

wherein when an activation event occurs, said transceiver transmits a first signal containing information to identify at least one portable electronic device, said controller activating said user alert device to indicate the presence or absence of said at least one portable electronic device within a specified proximity to said reminder device based on receipt of a response signal from said at least one portable electronic device.

45. A device as in claim 44, wherein said controller is a microprocessor.

46. A device as in claim 44, wherein said transceiver is Bluetooth™

compliant.

47. A device as in claim 44, wherein said user alert device is a display device that displays a visual message.

48. A device as in claim 44, wherein said user alert device is a speaker to provide an audio message.

49. A device as in claim 44, wherein said user alert device is at least one light.

50. A device as in claim 44, wherein said activation event is the opening of an automobile door.

51. A device as in claim 44, wherein said activation event is the starting of an automobile.

52. A device as in claim 44, wherein said activation event is a pre-determined time.

53. A device as in claim 44, wherein said activation event is the opening of a garage door.

54. A device as in claim 44, wherein said activation event is the opening of a door of a building.

55. A device as in claim 44, wherein said controller causes said reminder device to only provide said first signal on user-selected days of the week.

56. A device as in claim 44, wherein said user alert device provides a list of which of said portable electronic devices did not transmit said second response signal.

57. A device as in claim 44, wherein said user alert device provides a list of which of said portable electronic devices transmitted said second response signal.

58. A device as in claim 57, wherein said user alert device further provides a list of which of said portable electronic devices that are not supposed to be present transmitted said second response signal.

59. A device as in claim 57, wherein said reminder device transmits a third signal to an electronic calendar and detects a fourth response signal containing a list of which devices should be present and which devices should not be present.

60. A method for determining presence or absence of a portable electronic device when leaving a location comprising the steps of:

transmitting a first signal to at least one portable electronic device;

detecting if a second response signal is received from said portable electronic device; and

providing an indication of the presence or absence of said at least one portable electronic device within a specified proximity of a reminder device based on whether said second signal is received.

61. A method as in claim 60, wherein said first and second signals are radio signals.

62. A method as in claim 60, wherein said indication is a visual indication.

63. A method as in claim 60, wherein said indication is an audio indication.

64. A method as in claim 60, further comprising the steps of:

transmitting a plurality of first signals to a plurality of portable electronic devices;

detecting if a second response signal is received from each of said plurality of portable electronic devices; and

providing an indication based on whether each second response signal is not received.

65. A method as in claim 64, further comprising the steps of:

transmitting a third signal to an electronic calendar; and

detecting if a fourth response signal containing a list of which of said plurality of portable electronic devices should be present and which of said plurality of portable electronic devices should not be present is received from an electronic calendar.

66. A method for detecting presence or absence of portable electronic devices when leaving a location comprising the steps of:

detecting a first signal at said portable electronic device;

comparing identification information contained in said first signal to stored identification information; and

transmitting a second response signal indicating to a reminder device whether said portable electronic device is within a specified proximity of said reminder device if said identification information in said first signal matches said stored identification information.

67. A method as in claim 66, wherein said first and second signals are radio signals.

68. A method as in claim 66, wherein said radio signals are Bluetooth™

compliant.

69. A method for detecting presence or absence of a portable electronic devices when leaving a location comprising the steps of:

transmitting a first signal for each portable electronic device from a reminder device, each said first signal including identification information associated with one of said portable electronic devices;

detecting each of said first signals at each of said portable electronic devices within range to receive said first signals;

comparing said identification information in said first signals to identification information stored in each of said portable electronic devices that detect said first signals;

transmitting a second response signal from one of said portable electronic devices to said reminder device if said identification information in one of said first signals matches said information stored in said portable electronic device;

detecting each said second response signal at said reminder device; and

providing an indication of the presence or absence within a specified proximity of said reminder device of each of said portable electronic devices based on a second response signal was detected from each portable electronic device.

70. A method as in claim 69, further comprising the steps of:

transmitting a third signal from said reminder device to an electronic calendar;

detecting said third signal at said electronic calendar;

transmitting a fourth response signal from said electronic calendar to said reminder device containing a list of which of said portable electronic devices should be present and which of said portable electronic devices should not be present; and

detecting if said fourth response signal is received from said electronic calendar.

71. A method as in claim 69, wherein said indication is a visual indication.

72. A method as in claim 69, wherein said indication is an audio indication.

73. A method as in claim 69, wherein said first and second signals are Bluetooth™

compliant.