SparseCode Transceiver Security and Installation

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Solution Overview

Problem

Existing radio frequency transceivers and receivers, such as those used in garage door openers and remote keyless entry systems, face security issues and user inconveniences due to vulnerabilities in fixed and rolling code systems, including ease of hacking, incompatibility with universal garage door openers, and the need for complex installations.

Innovation Solution

A novel coding scheme called SparseCode, which provides enhanced security and user-friendly operation by using a snapping clamp mechanism for installation and allowing programming via key entries, making it difficult for unauthorized access and eliminating the need for physical access to receivers for adding new transmitters.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If fixed code systems are used, then ease of operation is improved, but security is worsened

Engineering Contradiction:

Improveease of operationVSAvoidsecurity

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The system transitions from static fixed codes to dynamic rolling codes that automatically change with each transmission. The receiver stores multiple valid codes and accepts transmissions matching any of them, providing both ease of operation (no manual reprogramming needed) and improved security (codes expire after use)

Inventive Principle:

Principle #15Dynamics

2Reliability

If rolling code schemes are used, then security is improved, but ease of operation is worsened

Engineering Contradiction:

ImprovesecurityVSAvoidease of operation

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The receiver is pre-programmed with multiple valid rolling codes before deployment. When a transmission is received, the receiver checks if it matches any of the pre-stored codes and accepts it if there's a match, eliminating the need for real-time code generation or complex synchronization while maintaining security

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If universal transceivers are used to copy codes, then adaptability is improved, but security is worsened

Engineering Contradiction:

ImproveadaptabilityVSAvoidsecurity

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The system uses time-limited code validity where each rolling code is designed to be valid for only a specific transmission instance or time window. This periodic expiration prevents universal transceivers from copying and reusing codes indefinitely, maintaining security while allowing legitimate users to operate multiple devices

Inventive Principle:

Principle #19Periodic action

4Ease of manufacture

If dip switches are used for code configuration, then ease of manufacture is improved, but security is worsened

Engineering Contradiction:

Improveease of manufactureVSAvoidsecurity

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent replaces mechanical dip switches with electronic memory storage for code configuration. The receiver uses electronic circuits to store and compare multiple rolling codes, eliminating the need for physical switch configurations while improving security through programmable, changeable code sets

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS8766770B2Universal transceivers and supplementary receivers with sparse coding technique option

Publication Date: 2014.07.01 BASSALI FRED

AI summary

A garage door/gate opening/closing mechanism is provided that utilizes electromechanical actuation to exert force on a button or buttons of a wall switch in order to actuate a garage door, where the switch actuates a garage door opener. The electromechanical actuator is actuated by means of an electrical signal produced by a radio frequency receiver or by means of a switch.