Dual purpose vehicle key fob for training tire pressure sensors

• US 7,009,491 B2
• Filed: 09/08/2003
• Issued: 03/07/2006
• Est. Priority Date: 09/08/2003
• Status: Expired due to Fees

• Current Assignee: Delphi Technologies, Inc. (BorgWarner Incorporated)
• Original Assignee: Delphi Technologies, Inc. (BorgWarner Incorporated)
• Inventors: Rodriguez, Hector H., Newman, Robert A.
• Primary Examiner(s): Horabik, Michael
• Assistant Examiner(s): AU, SCOTT D
• Application Number:
  US10/657,389
• Publication Number:
  US 20050052277A1
• Time in Patent Office: 911 Days
• Field of Search: 340/5.72, 340/426.36, 340/445, 340/447, 340/446, 340/426.17, 340/870.04, 731/462, 731/464
• US Class Current: 340/5.72
• CPC Class Codes: G07C 2009/00793 by Hertzian waves
• CPC Class Codes: G07C 9/00309 operated with bidirectional data transmission between data carrier and locks

Abstract

A dual purpose key fob has manipulable keys for, in a normal mode, locking and unlocking a vehicle and keys for opening a vehicle trunk and activating a panic alarm and, in a training mode, for sending code signals to tire pressure sensors to tell the sensors what tire they are in, e.g., after wheel rotation, so that the sensors subsequently can transmit the proper location signals to the vehicle'"'"'s ECM along with the pressure signals.

Claims

1. A key fob for a vehicle, comprising:

a housing holding a processor and a transmitter; and

plural user-manipulable keys disposed on the housing and sending signals to the processor at least when manipulated, at least some keys being dual-purpose keys, the signals from the dual-purpose keys representing respective tire locations when the key fob is in a first mode, the signals from at least some of the dual-purpose keys representing respective vehicle access commands when the key fob is in a second mode.

2. The key fob of claim 1, wherein the dual purpose keys include:

a first key representing a vehicle lock command in the second mode and a first tire location in the first mode; and

a second key representing a vehicle unlock command in the second mode and a second tire location in the first mode.

3. The key fob of claim 2, wherein the dual purpose keys include:

a third key representing a trunk unlock command in the second mode and a third tire location in the first mode; and

a fourth key representing a panic command in the second mode and a fourth tire location in the first mode.

4. The key fob of claim 1, comprising a gain amplifier connected to the transmitter, the processor causing the amplifier to establish a first power level of the transmitter in the first mode and a second power level of the transmitter in the second mode, the first power level being less than the second power level.

5. The key fob of claim 1, wherein the processor changes at least from the second mode to the first mode when at least two keys are manipulated simultaneously.

6. The key fob of claim 1, wherein the processor changes at least from the first mode to the second mode when at least two keys are manipulated simultaneously.

7. The key fob of claim 1, wherein the processor changes at least from the first mode to the second mode after the elapse of a predetermined timeout period.

8. The key fob of claim 1, wherein the first mode is implicitly established by the simultaneous manipulation of two keys.

9. A tire training and vehicle command system, comprising:

a key fob transmitting vehicle control signals at least in a first mode and tire location codes at least in a second mode; and

plural dual keys on the key fob and at least one processor supported by the key fob and receiving signals from the keys, wherein the signals from the dual-purpose keys represent a respective tire location when the key fob is in a first mode, and the signals from at least some of the dual-purpose keys represent respective vehicle access commands when the key fob is in a second mode.

10. The system of claim 9, wherein

a first key represents a vehicle lock command in the first mode and a first tire location in the second mode;

and

a second key represents a vehicle unlock command in the first mode and a second tire location in the second mode.

11. The system of claim 10, wherein

a third key represents a trunk unlock command in the first mode and a third tire location in the second mode;

and

a fourth key represents a panic command in the first mode and a fourth tire location in the second mode.

12. The system of claim 9, comprising a gain amplifier connected to a transmitter in the key fob, the processor causing the amplifier to establish a first power level of the transmitter in the first mode and a second power level of the transmitter in the second mode, the first power level being more than the second power level.

13. The system of claim 9, wherein the processor changes at least from one mode to the other mode when at least two keys are manipulated simultaneously.

14. The system of claim 9, wherein the second mode is implicitly established by the simultaneous reception of signals from two keys.

15. A tire training system, comprising:

a lightweight hand held key fob housing;

command input means on the housing for inputting command signals;

processor means for receiving the command signals and determining whether the command signals are tire training command signals or vehicle control command signals, the processor means generating codes based thereon; and

transmitter means, connected to the processor means for transmitting the codes received from the processor means;

wherein the signals from the dual-purpose keys represent a respective tire location when the key fob is in a first mode, and the signals from at least some of the dual-purpose keys represent respective vehicle access commands when the key fob is in a second mode.

16. The system of claim 15, wherein the command input means include plural dual purpose keys, the processor means includes a processor, and the transmitter means includes a wireless transmitter.

17. The system of claim 16, wherein

a first key represents a vehicle lock command in a vehicle control mode and a first tire location in a tire pressure sensor training mode;

and

a second key represents a vehicle unlock command in the vehicle control mode and a second tire location in the tire pressure sensor training mode.

18. The system of claim 16, wherein

a third key represents a trunk unlock command in the vehicle control mode and a third tire location in the tire pressure sensor training mode;

and

a fourth key represents a panic command in the vehicle control mode and a fourth tire location in the tire pressure sensor training mode.

19. The system of claim 16, comprising a gain amplifier connected to the transmitter, the processor causing the amplifier to establish a first power level of the transmitter in the vehicle control mode and a second power level of the transmitter in the tire pressure sensor training mode, the first power level being greater than the second power level.

20. The system of claim 15, wherein the processor changes at least from one mode to another mode when at least two keys are manipulated simultaneously.