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US 2026/0270700 A1Published application
Security system for a moveable barrier operator
AssigneeThe Chamberlain Group, Inc.
InventorJames J. Fitzgibbon
Life of this patent
Estimating the term…
Abstract
Electronic systems are provided for secure actuation of a remote device such as a moveable barrier operator. The systems address the “man in the middle” problem of persons intercepting and duplicating radio frequency signals from a control device by introducing timing parameters into a bidirectional communication sequence between at least two devices.
Claims20
A method of performing a pairing operation, the method comprising:
- receiving, by an operating device, an encrypted message from a control device including a first fixed code and a changed version of a first variable code;
- validating, by the operating device, the encrypted message by comparing the first fixed code and the changed version of the first variable code to stored values received during a learning mode, wherein the stored values include the first fixed code and the first variable code;
- transmitting, by the operating device, an encrypted response message to the control device as a response to validating the encrypted message;
- and
- storing, by the operating device, the first fixed code and the changed version of the first variable code to a memory of the operating device for use in an initial operation for controlling an action of the operating device by the control device.
2 more elements
An operating device, comprising:
- a processor;
- and
- a computer-readable medium storing instructions executable by the processor to:
- receive an encrypted message from a control device including a first fixed code and a changed version of a first variable code;
- validate the encrypted message by comparing the first fixed code and the changed version of the first variable code to stored values received during a learning mode, wherein the stored values include the first fixed code and the first variable code;
- transmit an encrypted response message to the control device as a response to validating the encrypted message;
- and
- store the first fixed code and the changed version of the first variable code to a memory of the operating device for use in an initial operation for controlling an action of the operating device by the control device.
5 more elements
A computer-readable medium of an operating device storing instructions executable by a processor to:
- receive an encrypted message from a control device including a first fixed code and a changed version of a first variable code;
- validate the encrypted message by comparing the first fixed code and the changed version of the first variable code to stored values received during a learning mode, wherein the stored values include the first fixed code and the first variable code;
- transmit an encrypted response message to the control device as a response to validating the encrypted message;
- and
- store the first fixed code and the changed version of the first variable code to a memory of the operating device for use in an initial operation for controlling an action of the operating device by the control device.
2 more elements
Dependencies are inferred from the claim text.