System and method for remote activation with interleaved modulation protocol

• US 7,915,997 B2
• Filed: 09/28/2006
• Issued: 03/29/2011
• Est. Priority Date: 09/28/2006
• Status: Active Grant

• Current Assignee: Lear Corporation
• Original Assignee: Lear Corporation
• Inventors: Nantz, John S., King, Ronald O., Tang, Tom Q., Ghabra, Riad
• Primary Examiner(s): Wu; Daniel
• Assistant Examiner(s): Mahase; Pameshanand
• Application Number:
  US11/536,255
• Publication Number:
  US 20080079603A1
• Time in Patent Office: 1,643 Days
• Field of Search: 340/825.22, 340/445, 340/5.72
• US Class Current: 340/3.21
• CPC Class Codes: B60R 25/24 using electronic identifiers containing a code not memorised by the user
• CPC Class Codes: G08C 17/02 using a radio link

Abstract

A system and method for remote activation of a device includes, in one embodiment, transmitting a command message according to a first modulation, and transmitting a signal representing the command message for the device according to a second modulation. The signal representing the command message transmitted according to the second modulation may be transmitted within the command message transmitted according to the first modulation.

Claims

1. A system for wireless control of a device, the system comprising:

a remote unit comprising

a user interface for selecting a command for the device,

a controller for generating a command signal including a command message corresponding to the command, the command signal comprising a plurality of data packets all modulated using a first modulation scheme and each of the same plurality of data packets modulated using a second modulation scheme, and

a transmitter for transmitting the command signal, wherein the entirety of the plurality of data packets conveys the command message according to the first modulation scheme and each one of the same plurality of data packets conveys the same command message in its entirety according to the second modulation scheme.

2. The system of claim 1 wherein the first modulation scheme comprises amplitude shift keyed modulation scheme and the second modulation comprises frequency shift keyed modulation.

3. The system of claim 1 wherein, upon transmitting the plurality of data packets, the command message conveyed according to the first modulation scheme is conveyed at a first data rate and the same command message conveyed according to the second modulation scheme is conveyed at a second data rate greater than the first data rate.

4. The system of claim 3 wherein a first latency is associated with the command for the command message conveyed at the first data rate, and a second latency is associated with the command for the command message conveyed at the second data rate, the second latency being less than the first latency.

5. The system of claim 1 wherein the entirety of the plurality of data packets conveying the command message according to the first modulation scheme includes each packet comprising a portion of the command message modulated according to the first modulation scheme.

6. The system of claim 5 further comprising a device unit, the device unit comprising:

a receiver for receiving at least one of the plurality of data packets comprising a portio of the command message modulated according to the first modulation scheme and the same command message in its entirety modulated according to the second modulation scheme and, for at least one packet of the plurality of data packets, demodulating the portion of the command message modulated according to the first modulation scheme and the same command message in its entirety modulated according to the second modulation scheme; and

a controller, in communication with the receiver, for decoding the command message conveyed in its entirety by the at least one packet according to the second modulation scheme and generating a first control signal for use in executing the command corresponding to the command message based on the at least one packet.

7. The system of claim 6 wherein the receiver is further configured to receive all of the plurality of data packets, each comprising a portion of the command message modulated according to the first modulation scheme, and assembling the entire pluralilty of data packets to produce the command message modulated according to the first modulation scheme;

and

the device unit controller is further configured to generate a second control signal for use in executing the command corresponding to the command message based on the entire plurality of data packets, the second control signal being the same as the first control signal.

8. The system of claim 7 wherein the device unit controller generates the second control signal for use in executing the command corresponding to the command message conveyed by the entire plurality of data packets according to the first modulation if the command is a dual range command.

9. A system for wireless control of a device, the system comprising:

a device unit comprising

a receiver for receiving a command signal including a command message corresponding to a command for the device, the command signal including a plurality of data packets all modulated using a first modulation scheme and each of the same plurality of data packets modulated using a second modulation scheme, wherein the entirety of the plurality of data packets conveys the command message according to the first modulation scheme and each one of the same plurality of data packets conveys the same command message in its entirety according to the second modulation scheme; and

a controller, in communication with the receiver, for processing the command message.

10. The system of claim 9 wherein the command message is received in the plurality of data packets, each data packet comprising a portion of the command message conveyed according to the first modulation scheme, and at least one data packet from the same plurality of data packets comprising the same command message conveyed in its entirety according to the second modulation scheme.

17. The system of claim 9, wherein the entirety of the plurality of data packets conveying the command message according to the first modulation scheme includes each packet comprising a portion of the command message modulated according to the first modulation scheme.

18. The system of claim 17, wherein the controller is configured to generate a control signal for use in executing the command corresponding to the command message conveyed in its entirety by at least one packet from the plurality of data packets according to the second modulation scheme.

19. The system of claim 17, wherein the controller is configured to generate a control signal for use in executing the command corresponding to the command message conveyed by the entire plurality of data packets according to the second modulation scheme.

20. The system of claim 17, wherein the receiver is configured to receive at least one of the plurality of data packets and, for at least one packet of the plurality of data packets, simultaneously demodulate the portion of the command message modulated according to the first modulation scheme and the same command message in its entirety modulated according to the second modulation scheme.

11. A system for wireless control of a device, the system comprising:

a remote unit comprising

a user interface for selecting a command for the device,

a controller for generating a command message corresponding to the command, and

a transmitter for transmitting a signal including the command message modulated according to a first modulation scheme and a second modulation scheme, wherein the first modulation produces a first data set containing the command message and the second modulation produces a second data set containing the same command message within at least a portion of the first data set;

wherein the controller partitions the signal into a plurality of packets, each packet comprising a portion of the command message modulated according to the first modulation scheme, and at least one packet comprising the same command message in its entirety modulated according to the second modulation scheme.

12. The system of claim 11 wherein the first modulation scheme comprises amplitude shift keyed modulation and the second modulation scheme comprises frequency shift keyed modulation.

13. The system of claim 11 wherein the plurality of packets are transmitted at a first data rate, wherein the at least one packet comprising the command message in its entirety conveyed according to the second modulation scheme conveys the command message at a second data rate greater than the first data rate.

14. The system of claim 11 further comprising:

a device unit comprising

a receiver for receiving at least one of the plurality of packets comprising a portion of the command message modulated according to the first modulation scheme and the same command message in its entirety modulated according to the second modulation scheme, wherein the receiver is configured to demodulate each of the plurality of packets according to the first modulation scheme and the second modulation scheme, and

a controller, in communication with the receiver, for processing the at least one of the plurality of packets.

15. The system of claim 14 wherein processing comprises assembling a plurality of received packets into the command message conveyed according to the first modulation, and generating a control signal for use in executing the command corresponding to the command message.

16. The system of claim 14, wherein processing comprises decoding a single received packet to obtain the command message conveyed in its entirety according to the second modulation, and generating a control signal for use in executing the command corresponding to the command message.