Method and system for transmit scheduling and dynamic strength adjustment of a security fob signal

• US 20080061929A1
• Filed: 07/31/2006
• Published: 03/13/2008
• Est. Priority Date: 07/31/2006
• Status: Abandoned Application

• Current Assignee: Lenovo Singapore Pte Limited (Lenovo Group Ltd.)
• Original Assignee: Lenovo Singapore Pte Limited (Lenovo Group Ltd.)
• Inventors: Jones, Matthew R., Hung, Sulai, Stewart, Aaron, Cromer, Daryl C., Ulrich, Sean M., Rutledge, James S.
• Application Number:
  US11/496,253
• Publication Number:
  US 20080061929A1
• Time in Patent Office: Days
• US Class Current: 340/5.61
• CPC Class Codes: B60R 2325/202 Personal digital assistant [PDA]
• CPC Class Codes: B60R 25/1003 Alarm systems characterised by arm or disarm features
• CPC Class Codes: G06F 21/88 Detecting or preventing theft or loss
• CPC Class Codes: G07C 2009/00357 and the lock having more than one limited data transmission ranges
• CPC Class Codes: G07C 2009/00507 keyless data carrier having more than one function
• CPC Class Codes: G07C 9/00309 operated with bidirectional data transmission between data carrier and locks

Abstract

Methods and systems for managing communication between a key fob and a host device are provided. In one implementation, the system includes a key fob configured to operate in accordance with one of a plurality of modes, including an automatic mode and a manual mode. The system further includes a host device associated with the key fob, wherein responsive to the key fob operating in accordance with the automatic mode, the key fob is configured to page periodically, and the host device is configured to page-scan periodically to detect a page from the key fob. In one implementation, the key fob further includes a controller configured to dynamically adjust a signal strength of a communication signal between the key fob and the host device in accordance with a mode of operation selected (or desired) by the user.

Claims

1. A system comprising:

a key fob configured to operate in accordance with one of a plurality of modes, including an automatic mode and a manual mode; and

a host device associated with the key fob,

wherein responsive to the key fob operating in accordance with the automatic mode,

the key fob is configured to page periodically; and

the host device is configured to page-scan periodically to detect a page from the key fob.

2. The system of claim 1, wherein the key fob includes a mode selector configured to provide a user with an ability to select a mode of operation for the key fob.

3. The system of claim 2, wherein the mode selector comprises one or more of a switch, a button, or a display screen.

4. The system of claim 2, wherein the key fob further includes a controller configured to dynamically adjust a signal strength of a communication signal between the key fob and the host device in accordance with a mode of operation selected by the user.

5. The system of claim 4, wherein the controller is configured to increase the signal strength of the communication signal in response to the user selecting the manual mode of operation, and decrease the signal strength of the communication signal in response to the user selecting the automatic mode of operation.

6. The system of claim 5, wherein:

the plurality of modes of operation associated with the key fob are not exclusive of one another; and

the user is operable to select the manual mode of operation by pressing a manual button on the key fob at any time regardless of a current operation mode of the key fob.

7. The system of claim 1, wherein:

in response to the host device detecting a page from the key fob, the host device is operable to perform a first function; and

in response to the host device not detecting a page from the key fob, the host device is operable to perform a second function.

8. The system of claim 7, wherein:

the host device includes a theft deterrent system; and

the first function comprises disarming the theft deterrent system associated with the host device; and

the second function comprises arming the theft deterrent system associated with the host device.

9. The system of claim 1, wherein the host device comprises at least one of a workstation, a desktop computer, a laptop computer, a personal digital assistant (PDA), a cell phone, a network, a bicycle, an automobile, or other device having a function that is controllable by the key fob.

10. A system comprising:

a first device configured to operate in accordance with an automatic mode; and

a second device associated with the first device,

wherein responsive to the first device operating in accordance with the automatic mode,

the first device is configured to page periodically; and

the second device is configured to page-scan periodically to detect a page from the first device.

11. The system of claim 10, wherein:

the first device comprises a key fob; and

the second device comprises a host device.

12. The system of claim 11, wherein the key fob is further configured to operate in accordance with a manual mode, and includes a mode selector configured to provide a user with an ability to select a mode of operation for the key fob.

13. The system of claim 12, wherein the key fob further includes a controller configured to dynamically adjust a signal strength of a communication signal between the key fob and the host device in accordance with the mode of operation selected by the user.

14. The system of claim 13, wherein the controller is configured to increase the signal strength of the communication signal in response to the user selecting the manual mode of operation, and decrease the signal strength of the communication signal in response to the user selecting the automatic mode of operation.

15. The system of claim 11, wherein:

in response to the host device detecting a page from the key fob, the host device is operable to perform a first function; and

in response to the host device not detecting a page from the key fob, the host device is operable to perform a second function.

16. The system of claim 15, wherein:

the host device includes a theft deterrent system; and

the first function comprises disarming the theft deterrent system associated with the host device; and

the second function comprises arming the theft deterrent system associated with the host device.

17. A computer-implemented method comprising:

receiving user input selecting a mode of operation for a key fob; and

dynamically adjusting a signal strength of the key fob in accordance with the mode of operation selected by the user.

18. The method of claim 17, wherein:

the key fob configured to operate in accordance with an automatic mode and a manual mode; and

dynamically adjusting a signal strength of the key fob includes increasing the signal strength in response to the user selecting the manual mode, and decreasing the signal strength in response to the user selecting the automatic mode.

19. The method of claim 17, wherein receiving user input selecting a mode of operation comprises receiving user input though a display screen of the key fob.

20. The method of claim 17, wherein the key fob is a security key fob configured to arm and disarm a host device associated with the key fob.