System and method for receiving data for training a trainable transmitter

• US 8,330,569 B2
• Filed: 05/28/2004
• Issued: 12/11/2012
• Est. Priority Date: 05/28/2003
• Status: Active Grant

• Current Assignee: Gentex Corporation
• Original Assignee: Johnson Controls Technology Company (Johnson Controls International plc)
• Inventors: Blaker, David A., Cardwell, Matthew W.
• Primary Examiner(s): Mehmood, Jennifer
• Assistant Examiner(s): Wilson, Brian
• Application Number:
  US10/558,121
• Publication Number:
  US 20070176735A1
• Time in Patent Office: 3,119 Days
• Field of Search: None
• US Class Current: 340/5.22
• CPC Class Codes: B60R 25/24 using electronic identifiers containing a code not memorised by the user
• CPC Class Codes: G07C 2009/0019 the keyless data carrier having only one limited data transmission rangs
• CPC Class Codes: G07C 2009/00793 by Hertzian waves
• CPC Class Codes: G07C 2009/00865 remotely by wireless communication
• CPC Class Codes: G07C 2009/00888 programming by learning
• CPC Class Codes: G07C 2009/00928 for garage doors
• CPC Class Codes: G07C 9/00182 operated with unidirectional data transmission between data carrier and locks
• CPC Class Codes: G07C 9/00857 where the code of the data carrier can be programmed
• CPC Class Codes: G08C 17/02 using a radio link
• CPC Class Codes: G08C 19/28 using pulse code
• CPC Class Codes: G08C 2201/20 Binding and programming of remote control devices
• CPC Class Codes: H04B 5/22 Capacitive coupling

Abstract

A system for receiving data for training a trainable transmitter used to subsequently transmit a modulated RF signal having the received data includes an antenna, a capacitive detection circuit and a control circuit. The capacitive detection circuit is coupled to the antenna and configured to detect data provided in a control signal of a remote control transmitter used to remotely actuate a device. The control circuit is coupled to the capacitive detection circuit and is configured to store the received data and to generate the RF signal having the received data to be transmitted by the trainable transmitter to actuate the device.

Claims

1. A system for detecting data for training a trainable transmitter used to subsequently transmit a modulated RF signal having the detected data, the system comprising:

an antenna;

a capacitive detection circuit coupled to the antenna and configured to detect data provided in a control signal of a remote control transmitter used to remotely activate a device; and

a control circuit coupled to the capacitive detection circuit and configured to store the detected data and to generate the RF signal having the detected data to be transmitted by the trainable transmitter to actuate the device; and

wherein the trainable transmitter does not include an RF receiver and wherein the control signal of the remote control transmitter is normally used to remotely activate the device via remote RF transmission;

wherein the control circuit is configured to reconstruct a data pattern to be transmitted to the device based on the detected data;

wherein the control circuit is configured to analyze the duty cycle of the detected data to determine whether the detected data should be inverted as a part of the reconstruction of the data pattern to be transmitted to the device;

wherein the control circuit is configured to compare the detected data to data patterns stored in memory of the control circuit; and

wherein the control circuit is configured to adjust the polarity of the detected data as a part of the reconstruction of the data pattern based on the comparison of the detected data to the data patterns stored in memory of the control circuit; and

wherein the capacitive detection circuit includes a plurality of sensing electrodes and wherein the control circuit scans the plurality of sensing electrodes in order to find a best control signal.

2. A system according to claim 1, wherein the capacitive detection circuit is configured to detect modulation data of the control signal.

3. A system according to claim 2, wherein the control signal is modulated using an On-Off Keying modulation technique.

4. A system according to claim 1, wherein the control circuit is configured to generate a request for a user to place the remote control transmitter at a distance from the capacitive detection circuit.

5. A system according to claim 4, wherein the control circuit is further configured to provide a feedback to the user indicating that the remote control transmitter is at the distance.

6. A system according to claim 1, wherein the capacitive detection circuit includes a reference electrode and a sensing electrode.

7. A system according to claim 1, wherein the control circuit is further configured to determine a frequency of transmission for the control signal.