Electronic Credential Reader Protocol Adaptation
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Solution Overview
Problem
Legacy electronic access control systems are vulnerable to data breaches due to unsecured communication protocols, requiring a secure and seamless transition from unidirectional to bidirectional communication protocols to enhance security.
Innovation Solution
An electronic credential reader that defaults to a unidirectional mode but can switch to a bidirectional mode using the same external communication lines upon detecting input data, supporting both legacy Wiegand and secure OSDP protocols, allowing for automatic protocol adaptation without rewiring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If unidirectional communication protocol is used, then compatibility with legacy systems is maintained, but security is compromised due to vulnerability to data breaches
Solution Approach 1:
The credential reader dynamically switches between unidirectional and bidirectional communication modes based on the access controller type. The system includes a detector that identifies whether the connected controller supports bidirectional communication, and a switch that reconfigures the communication interface accordingly. This dynamic adaptation allows the system to use secure bidirectional protocol with modern controllers while maintaining compatibility with legacy unidirectional systems.
Solution Approach 2:
The communication parameters of the credential reader are changed based on the detected controller type. When bidirectional communication is detected, the system transitions from unidirectional mode (single data line) to bidirectional mode (full-duplex communication with separate transmit and receive lines). This parameter change enables enhanced security features like encryption and authentication while preserving backward compatibility.
2Reliability
If bidirectional communication protocol is implemented, then security is enhanced, but device complexity increases
Solution Approach 1:
The patent combines both unidirectional and bidirectional communication capabilities into a single credential reader device. The communication interface integrates a detector for identifying controller types, a switch for reconfiguring the interface, and support for both Wiegand (unidirectional) and OSDP (bidirectional) protocols. This merging allows the system to provide enhanced security when needed while maintaining simplicity through automatic adaptation.
Solution Approach 2:
The credential reader is designed with universal communication capability to work with both legacy unidirectional controllers and modern bidirectional controllers. The device includes a bidirectional communication interface that can operate in both modes, eliminating the need for separate readers for different controller types and reducing overall system complexity.
3Reliability
If separate communication lines are used for unidirectional and bidirectional modes, then communication reliability is improved, but installation complexity increases
Solution Approach 1:
The communication lines are dynamically reconfigured based on the operating mode. The system includes a switch that redirects signal paths between unidirectional and bidirectional modes. In unidirectional mode, the bidirectional lines are configured to function as unidirectional lines, allowing the same physical infrastructure to support both communication types without requiring separate wiring for each mode.
Data Source
AI summary
Disclosed embodiments provide a configurable electronic credential reader. The electronic credential reader defaults to a first communication mode utilizing a unidirectional communication interface. A bidirectional communication interface is monitored. If data is detected on the bidirectional communication interface, the electronic credential reader switches to a bidirectional communication mode. Circuitry within the electronic credential reader switches between the unidirectional communication interface and bidirectional communication interface such that the same external communication lines are used for both the unidirectional mode and the bidirectional mode.