Smart Card Adapter for Contactless-Contact Interfacing
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Solution Overview
Problem
Existing smart card systems require users to replace readers or cards when upgrading or expanding, as contact and contactless smart cards are not compatible with existing installations without retrofitting, making it impractical to use contact smart cards with contactless readers or vice versa.
Innovation Solution
A portable adapter that removably engages contact or contactless smart cards and physically cooperates with smart card readers, featuring an external contact module for electrical signal transmission and a transceiver to convert signals between contact and contactless interfaces, allowing seamless operation between different smart card types and readers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If contact smart cards are used with contactless smart card readers, then compatibility between different smart card types is improved, but the reader hardware must be replaced or retrofitted
Solution Approach 1:
The patent introduces an adapter as an intermediary device that physically connects to the existing reader and interfaces with the smart card. The adapter contains a contact module with electrical contacts that mate with the reader's contact pads, while also incorporating a contactless interface (antenna) to communicate with contactless smart cards. This intermediary adapter layer enables compatibility without modifying the original reader hardware.
Solution Approach 2:
The system is divided into separate functional components: the existing reader, the adapter (which itself contains multiple sub-components including contact module and contactless module), and the smart card. This segmentation allows the adapter to be a standalone unit that bridges the interface between reader and card, enabling flexibility and avoiding system-wide replacement.
2Adaptability or versatility
If contactless smart cards are used with contact smart card readers, then compatibility between different smart card types is improved, but the reader hardware must be replaced or retrofitted
Solution Approach 1:
The adapter serves as a mediator that the contactless smart card indirectly communicates with. The card's contactless interface (antenna) communicates with the adapter's contactless module via electromagnetic fields, while the adapter's contact module handles the physical contact interface with the reader. This mediation enables contactless cards to work with contact readers without hardware changes.
Solution Approach 2:
The patent replaces the mechanical contact-based communication system with an electromagnetic field-based communication system through the contactless module. Instead of requiring physical contact between the card and reader, the adapter uses electromagnetic induction to transfer data and power wirelessly between the contactless card and the contact reader interface.
3Productivity
If existing smart card installations are expanded or upgraded, then system functionality is improved, but all readers or cards must be replaced to support new contactless or contact technology
Solution Approach 1:
The adapter is designed as a universal interface that can work with both contact and contactless smart cards, as well as with both contact and contactless readers. The adapter itself can function in multiple modes: it can present a contact interface to a contactless card, or present a contactless interface to a contact card, making it a multi-functional bridge that supports system expansion without requiring specialized hardware for each scenario.
Solution Approach 2:
The adapter is a self-contained unit that includes all necessary interface components (contact module, contactless module, processing logic) to enable compatibility. It autonomously handles the signal conversion and protocol translation between contact and contactless interfaces, requiring no external assistance or system-wide changes to function.
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 the use of contact smart cards with contactless readers and vice versa without replacing original smart cards or readers, providing a cost-effective and user-friendly solution for upgrading smart card systems by facilitating compatibility between different smart card technologies.
Implementation Method 1
a transceiver in communication with the external contact module for converting electrical signals received by the external contact module to electromagnetic signals for reception by a contactless smart card
Implementation Method 2
for converting received electromagnetic signals from the contactless smart card to electrical signals to be transmitted by the external contact module
Implementation Method 3
via an antenna embedded in the card which receives power from a radiofrequency (RF) field generated by the card reader
Data Source
AI summary
A portable adapter for using a contact smart card with a contactless smart card reader and a contactless smart card with a contact smart card reader. The adaptor is provided with a casing that is configured to engage a contact smart card or a contactless smart card, and is provided with an exterior portion that physically cooperates via a contact pad with a contact smart card reader. The adapter is provided with an interface passing signals between a contactless smart card and a contact smart card reader, and an interface for passing signals between a contact smart card and a contactless smart card reader.