Four-Cornered NFC Card Isolating Signal Interference
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Solution Overview
Problem
Existing near field communication (NFC) tags interfere with each other when closely packaged, making it difficult to include multiple tags in a single device due to signal interference during wireless communications.
Innovation Solution
A credit card-sized device housing four NFC tags, each with an antenna located at a respective corner, allowing for interference-free wireless communication by positioning each tag precisely relative to a reader.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple NFC tags are closely packaged together in a single device, then the device can perform multiple functions with a single card, but signal interference occurs between the tags during wireless communication
Solution Approach 1:
The card is divided into four distinct corner regions, each housing a separate NFC tag with its own antenna. This segmentation isolates the tags spatially, allowing each to be activated independently when its corresponding corner is positioned near a reader, thereby preventing signal interference while maintaining multi-functionality
Solution Approach 2:
The patent transitions from a conventional single-center tag design to a multi-corner distributed arrangement. By positioning tags at the four corners of the card rather than consolidating them in one location, the invention utilizes the two-dimensional space of the card more effectively, enabling simultaneous multi-functionality without interference
2Ease of operation
If multiple NFC tags are placed in a single card, then convenience of carrying multiple tags is improved, but difficulty in positioning and activating specific tags increases
Solution Approach 1:
Each corner of the card is given a distinct functional identity with its own NFC tag, visually distinguishable by corner markers or indicators. This local differentiation allows users to easily identify and position the specific corner needed for a particular function, eliminating confusion about which tag to activate
Solution Approach 2:
The card is pre-configured with four distinct corner regions, each marked and prepared for a specific function. Users do not need to search or determine which tag to use; the visual markers and corner positioning provide immediate guidance on how to activate the appropriate function by simply orienting the correct corner toward the reader
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 efficient and convenient execution of multiple preset functions without signal interference, facilitating interactions with various institutions such as financial, school, or hospital systems by allowing unique information to be communicated from each corner of the card.
Implementation Method 1
Near Field Communication (NFC) is a form of short range communication technology enabling devices in close proximity with each other to interact
Implementation Method 2
The other device may be a passive device such as a passive Radio Frequency Identification (RFID) tag, which returns its content upon query by the active device
Data Source
AI summary
A four-cornered, wireless information conveying card comprises a card body defining at least four corners that are oriented in different directions with first, second, third and fourth information tags supported within said card body. Each information tag contains predetermined information therein, is located at a respective one of the at least four corners of the card body and has a respective antenna associated therewith. Each antenna is configured to communicate the predetermined information of its associated information tag wirelessly to a tag reader without interference from the other antennas.