Data Carrier Protocol Switching for Secure Communication
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Solution Overview
Problem
Conventional data carriers struggle to switch security functions corresponding to the type of reader/writer device, leading to difficulties in preventing unauthorized access and compatibility issues between proximity and vicinity data carriers.
Innovation Solution
A data carrier system that employs a communication protocol storage unit, RF analogue receiver, contact communication end terminal unit, and authentication command analyzer to switch between RF and contact-type serial communication protocols, allowing selection of authentication methods based on the received command from an external device, enabling both proximity and vicinity communication using a single communication protocol.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a data carrier uses different security functions for RF and contact-type serial communication, then security is improved, but the device cannot switch authentication methods corresponding to different reader/writer device types
Solution Approach 1:
The patent implements dynamic switching of authentication methods by detecting the reader/writer device type (proximity or vicinity) and automatically selecting the appropriate authentication protocol. The authentication unit can dynamically change between first authentication method for proximity devices and second authentication method for vicinity devices, resolving the contradiction between maintaining security and adapting to different device types.
Solution Approach 2:
The patent changes the authentication parameters based on the detected reader/writer device type. When a proximity device is detected, the system switches to first authentication parameters; when a vicinity device is detected, it switches to second authentication parameters. This parameter switching enables both security maintenance and adaptability to different communication protocols.
2Adaptability or versatility
If separate data carriers are used for proximity and vicinity communication, then communication compatibility is improved, but device complexity and cost increase
Solution Approach 1:
The patent creates a universal data carrier that can perform both proximity and vicinity communication functions through a single device. The communication unit is designed to support multiple communication protocols, and the authentication unit can switch between different authentication methods, eliminating the need for separate data carriers for different communication types while maintaining full compatibility.
Solution Approach 2:
The patent merges the functionality of separate proximity and vicinity data carriers into a single integrated device. By combining multiple communication protocols and authentication methods in one data carrier, the system achieves protocol compatibility without increasing device complexity, as the switching logic is managed through a unified control structure.
3Adaptability or versatility
If a data carrier supports both RF and contact-type serial communication, then versatility is improved, but the system cannot prevent unauthorized access by particular communication parties
Solution Approach 1:
The patent applies different security qualities to different communication modes. The first authentication method with higher security level is applied when proximity devices communicate, while the second authentication method is applied for vicinity devices. This localized security approach ensures that each communication channel has appropriate security measures, preventing unauthorized access while maintaining versatility.
Solution Approach 2:
The system incorporates feedback mechanisms where the authentication result determines subsequent communication access. If authentication fails, the system can terminate communication or switch to a more secure authentication method, providing dynamic security control that prevents unauthorized access while allowing legitimate communication.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables secure and compatible communication by allowing the data carrier to adapt authentication levels and communication modes according to the reader/writer device, reducing the need for separate data carriers for proximity and vicinity communication, thereby enhancing security and reducing costs.
Implementation Method 1
an antenna installed in the data carrier receives an alternate magnetic field of carrier frequency supplied from the reader/writer device via an antenna circuit to obtain operating power
Implementation Method 2
the data carrier transmits a response by turning on and off a conventional load switch connected to an antenna circuit installed therein, according to the content of the response signal to transmit
Data Source
AI summary
The data carrier has a communication protocol storage unit storing a communication protocol for communicating with an external communication device, an RF analogue receiver receiving an interrogation signal from the external communication device as an RF signal, a contact communication end terminal unit performing contact communication with the external communication device, a communication command controller controlling a command used in an RF communication protocol performed via said RF analogue receiver or a contact-type serial communication protocol performed via said contact communication end terminal unit, and a connection selector selectively connecting one of said RF analogue receiver and said contact communication end terminal unit with said communication command controller.