Multi-Row Smartcard Reader Contacts
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Solution Overview
Problem
Current smartcard readers face challenges in reliably connecting smartcards with non-standard contact pad configurations, particularly those with additional contact pads beyond the conventional eight, and in ensuring seamless insertion and data exchange with both enhanced and conventional smartcards.
Innovation Solution
The enhanced smartcard reader features three rows of cantilevered reading contacts with specific arm and curvature configurations to accommodate smartcards with up to twelve contact pads, ensuring reliable electrical connection and backward compatibility with conventional smartcards, along with a client device that includes a tuning module, processing module, and descrambling module for secure data access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional smartcard readers with standard contact configurations are used, then compatibility with conventional smartcards is maintained, but they cannot reliably connect smartcards with non-standard contact pad configurations
Solution Approach 1:
The patent introduces a third row of reading contacts arranged in a curved pattern, adding a dimensional aspect to the contact configuration. This allows the reader to accommodate smartcards with contact pads arranged in non-linear, curved patterns, thereby increasing adaptability to non-standard configurations without fundamentally changing the basic reader structure
Solution Approach 2:
The reader is designed with multiple rows of reading contacts (first row in linear arrangement, second row in curved arrangement, and third row in curved pattern) that can simultaneously or selectively connect with different contact pad configurations. This universal design allows a single reader to handle both conventional and non-standard smartcards
2Ease of operation
If sliding contact technology is used, then convenience of card insertion is improved, but reliable electrical connection with extended contact pads cannot be ensured
Solution Approach 1:
The contact system is segmented into multiple independent rows of reading contacts, each capable of making reliable electrical connection with corresponding contact pads. The first row handles conventional linear contact pads, while the second and third rows handle extended curved contact pads, ensuring reliable connection for each segment of the contact interface
Solution Approach 2:
By adding curved and multi-row contact arrangements, the patent extends the contact interface into additional spatial dimensions, allowing reliable electrical connection with extended contact pads while maintaining the sliding insertion mechanism for ease of operation
3Adaptability or versatility
If additional reading contacts are added to accommodate extended contact pads, then compatibility with enhanced smartcards is improved, but device structure becomes more complex
Solution Approach 1:
The patent adds reading contacts in curved arrangements and a third row, extending the contact structure into curved spatial dimensions. This allows accommodation of extended contact pads on non-standard smartcards while organizing the additional contacts in a systematic curved pattern that manages structural complexity
Solution Approach 2:
Multiple rows of reading contacts with different arrangements (linear and curved) are merged into a single integrated reader structure. This combining of different contact configurations into one unified device provides support for both conventional and enhanced smartcards without requiring separate readers
Data Source
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AI summary
An enhanced smartcard reader having a row of first reading contacts, a row of second reading contacts, and a row of third reading contacts. The first reading contacts have arm portions that are cantilevered off a first mounting member of the reader, the second reading contacts have arm portions that are cantilevered off a second mounting member of the reader, and the third reading contacts have arm portions that are cantilevered off a third mounting member of the reader. The third mounting member is located vertically distanced from the second mounting member, and the arm portions of the third reading contacts directly overlay the arm portions of the second reading contacts.