Smartcard Interface Device with Multi-Protocol Radio Modules
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Solution Overview
Problem
Conventional methods for interfacing with smartcards are limited in functionality and unable to fully leverage the features and benefits of smartcards, lacking advanced communication protocols and security measures.
Innovation Solution
A smartcard interface device equipped with near-field, far-field, and contact-based radio modules, along with a central processing unit, memory, and power management, enabling simultaneous communication protocols like ISO 18092, ISO 14443, and Bluetooth, and incorporating security features such as RF shielding and latching mechanisms for secure access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional smartcard interface methods are used, then device simplicity is maintained, but functionality and ability to leverage smartcard features are limited
Solution Approach 1:
The patent combines multiple communication protocols (contactless, contact-based, and far-field Bluetooth) into a single smartcard interface device, enabling it to communicate through multiple modes simultaneously. This merging of communication methods resolves the contradiction by providing enhanced functionality while integrating these capabilities into one unified device rather than requiring separate systems for each protocol.
Solution Approach 2:
The interface device is designed with universal multi-functionality to support multiple communication protocols including ISO 14443 contactless, ISO 7816 contact-based, and Bluetooth far-field communications. This multi-functional design allows the single device to adapt to various smartcard communication standards and use cases, thereby improving versatility without requiring multiple specialized devices.
2Adaptability or versatility
If advanced communication protocols are added to enhance functionality, then smartcard features can be fully leveraged, but device complexity increases
Solution Approach 1:
The patent segments the communication functionality into distinct radio modules: a contactless radio for ISO 14443, a contact-based radio for ISO 7816, and a far-field radio for Bluetooth. Each radio module is independently designed to handle specific communication protocols, allowing the device to support multiple protocols while maintaining manageable complexity through modular architecture rather than a monolithic design.
Solution Approach 2:
The processor acts as an intermediary that coordinates between multiple radio modules and the smartcard interface. It manages the complexity of handling multiple communication protocols by centralizing control logic, protocol interpretation, and data routing in a single processing unit that can switch between different communication modes as needed.
3Reliability
If security features like RF shielding are implemented, then secure access is ensured, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent employs RF shielding as a thin film or coating integrated into the device structure to block unauthorized radio frequency access. This approach provides effective security against eavesdropping and unauthorized communication while maintaining a compact form factor and simplifying manufacturing compared to bulkier shielding materials, as thin film RF shielding can be applied during standard PCB or housing fabrication processes.
Data Source
AI summary
A device may be configured such that a smartcard may be physically mounted in, on, and/or to the device. The device may comprise one or more circuits that enable communicating over a far-field communication link and that enable communicating with a smartcard when the smartcard is physically mounted in, on, and/or to the device. The far-field communication link may be an ISO 18000-7 link. The device may communicate with a smartcard via contacts and/or via near-field communications. The device may be operable to relay data between a near-field communication link between the device and a smartcard and a far-field communication link between the device and another device. The device may be generally rectangular in shape, less than one centimeter thick, than one centimeter longer than an ISO 7816 compliant smartcard, and less than one centimeter wider than an ISO 7816 compliant smartcard.