Method and apparatus for a rolling code learning transmitter

• US 7,741,951 B2
• Filed: 08/31/2005
• Issued: 06/22/2010
• Est. Priority Date: 08/09/2001
• Status: Active Grant

• Current Assignee: Gentex Corporation
• Original Assignee: The Chamberlain Group, Inc. (The Chamberlain Group LLC)
• Inventors: Fitzgibbon, James J.
• Primary Examiner(s): Brown; Vernal U
• Application Number:
  US11/216,224
• Publication Number:
  US 20060049914A1
• Time in Patent Office: 1,756 Days
• Field of Search: 340/5.23, 340/5.1, 340/5.2, 340/5.21, 340/5.71, 340/5.64, 340/5.22, 340/827.72, 340/825.2
• US Class Current: 340/5.23
• CPC Class Codes: G07C 2009/00492 whereby the code is a rolling code
• CPC Class Codes: G07C 2009/00888 programming by learning
• CPC Class Codes: G07C 2009/00928 for garage doors
• CPC Class Codes: G07C 2209/08 With time considerations, e.g. temporary activation, valid time window or time limitations
• CPC Class Codes: G07C 9/00309 operated with bidirectional data transmission between data carrier and locks
• CPC Class Codes: G07C 9/00857 where the code of the data carrier can be programmed

Abstract

A barrier movement operator system having a receiver for receiving, learning and responding to transmitted rolling code type access codes; at least one trained transmitter for operating the system by transmitting a rolling code type access code to the receiver; at least one learning transmitter for learning the rolling code type access code from said trained transmitter in order to operate the system; a controller for evaluating the relationship between the learning transmitter rolling type access code and the trained transmitter rolling type access code; and a device for providing a barrier movement in response to access codes received by the receiver. The barrier movement operator provides a method of learning valid security codes by a security code receiver comprising the steps of receiving a first security code, then within a predetermined period of time receiving a second security code, having a predetermined relationship to the first security code; and storing a representation of the second security code as a valid security code.

Claims

1. A method of learning valid security codes by a security code receiver, comprising steps of:

receiving a first security code from a first transmitter;

within a predetermined period of time receiving from a second transmitter a second security code, having a predetermined relationship to the first security code from the first transmitter;

confirming the predetermined relationship by comparing the first security code and the second security code;

in response to confirming the predetermined relationship, storing a representation of the second security code as a valid security code.

2. The method of claim 1 wherein the security code receiver comprises a movable barrier operator.

3. The method of claim 2 wherein the movable barrier operator comprises a garage door opener.

4. A method of learning valid security codes by a security code receiver, comprising steps of:

receiving a first security code from a first transmitter;

within a predetermined period of time, receiving from a second transmitter a second security code having a predetermined relationship that correlates to the first security code from the first transmitter in a defined manner, and

storing a representation of the second security code as a valid security code;

wherein the predetermined relationship comprises a correlation between the first security code and the second security code; and

wherein the correlation comprises, at least in part, that a rolling code access code portion of the second security code is next in a sequence as determined with respect to a rolling code access code portion of the first security code.

5. The method of claim 4 wherein the correlation comprises, at least in part, a portion of each of the first and second security code that is identical.

6. The method of claim 5 wherein the portion that is identical comprises a fixed identifier.

7. The method of claim 6 wherein the fixed identifier comprises at least one of:

a transmitter number identification;

a transmitter type identification.

8. A method of training a security code transmitter to operate with a security code receiver, comprising, at the security code transmitter to be trained:

receiving at the security code transmitter from an already-trained security code transmitter a security code transmission comprising, at least in part, a fixed identification portion and a rolling code portion;

determining a valid subsequent rolling code portion based upon the rolling code portion;

transmitting to the security code receiver the fixed identification portion and the valid subsequent rolling code portion.

9. The method of claim 8 wherein the security code transmitter comprises a remote control for a movable barrier operator.

10. The method of claim 9 wherein the movable barrier operator comprises a garage door opener.

11. The method of claim 8 wherein determining a valid subsequent rolling code portion based upon the rolling code portion comprises determining a next sequential rolling code portion based upon the rolling code portion.

12. The method of claim 8 wherein transmitting to the security code receiver the fixed identification portion and the valid subsequent rolling coded portion comprises automatically transmitting to the security code receiver the fixed identification portion and the valid subsequent rolling code portion within a predetermined period of time of receiving the security code transmission from the already-trained security code transmitter.