Moveable Barrier Operator Pairing With Dynamic Code Authentication
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Solution Overview
Problem
Existing security systems for moveable barriers, such as garage doors and gates, are vulnerable to unauthorized access due to the interception of rolling codes, and pairing methods require physical interaction and are inconvenient.
Innovation Solution
A bidirectional communication system with encrypted fixed and changing codes is implemented, allowing devices to validate transactions and adjust communication protocols based on device type and timing, enabling secure and convenient operation without the need for physical interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rolling codes are used to prevent recorded transmission attacks, then security against replay attacks is improved, but vulnerability to code interception increases
Solution Approach 1:
The patent implements bidirectional dynamic code exchange where both the transmitter and receiver continuously update their rolling codes based on exchanged challenge-response pairs. This dynamic mutual authentication ensures that intercepted codes cannot be reused, as each device maintains its own independent rolling code sequence that evolves with each authentication cycle.
Solution Approach 2:
The system employs feedback mechanisms where the receiver sends acknowledgment signals and the transmitter adjusts its rolling code based on the receiver's response. This feedback loop ensures that both devices are synchronized and that any intercepted or corrupted transmissions are detected and rejected, maintaining security integrity.
2Reliability
If traditional pairing methods require physical interaction and manual training, then security control is improved, but ease of operation deteriorates
Solution Approach 1:
The patent implements self-service pairing where the barrier operator automatically detects, authenticates, and pairs with control devices without manual user intervention. The system autonomously performs code exchange, validation, and synchronization, eliminating the need for users to physically train devices while maintaining secure authentication through automated challenge-response protocols.
Solution Approach 2:
The system replaces manual mechanical pairing operations with automated electronic authentication mechanisms. Instead of requiring physical presence and manual button sequences, the patent uses wireless communication, automatic device detection, and cryptographic challenge-response protocols to achieve secure pairing, significantly improving user convenience while maintaining security.
3Adaptability or versatility
If multiple control devices are supported without bidirectional communication, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent segments the authentication process into distinct modular components: device detection phase, challenge-response authentication phase, and synchronization phase. Each phase handles specific tasks independently, allowing multiple control devices to be processed sequentially through standardized modules rather than requiring complex unified handling, thus reducing overall system complexity while maintaining multi-device adaptability.
Solution Approach 2:
The system employs a universal bidirectional communication protocol that handles multiple device types and scenarios through a single standardized authentication mechanism. The same challenge-response protocol works for various control devices (handhelds, key fobs, vehicle integrations), eliminating the need for device-specific complex handling and simplifying the overall system architecture.
Data Source
AI summary
Systems are provided for secure actuation of a device such as a moveable barrier operator. In certain embodiments, portions of communications are configured in order to cause information to be added to or deleted from a memory of one of the devices.