NFC Gesture Detection via Inductive Coupling Array
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Solution Overview
Problem
Existing Near Field Communication (NFC) devices rely on user-initiated interactions and manual alignment, which can be cumbersome and limit the efficiency of data exchange between NFC-enabled devices.
Innovation Solution
A first NFC device equipped with an antenna module and a controller module that detects motion relative to a second NFC device using an array of passive inductive coupling elements, allowing for automatic detection and initiation of transactions based on predefined gestures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual alignment and user-initiated interactions are used for NFC transactions, then device complexity is reduced, but ease of operation deteriorates due to cumbersome manual alignment requirements
Solution Approach 1:
The NFC system automatically detects motion gestures and initiates transactions without requiring manual user intervention. The passive inductive coupling elements self-activate when exposed to the magnetic field, enabling the system to service itself by detecting gestures and triggering appropriate NFC actions automatically.
Solution Approach 2:
The patent replaces manual mechanical alignment operations with magnetic field-based detection. Instead of requiring users to physically align devices, the system uses passive inductive coupling elements that detect motion through changes in magnetic field coupling, substituting mechanical alignment with electromagnetic detection.
2Productivity
If manual alignment is required for NFC transactions, then device complexity is minimized, but productivity deteriorates due to time-consuming alignment processes
Solution Approach 1:
The system automatically detects gestures and initiates transactions without requiring manual user intervention. The passive inductive coupling elements self-activate when exposed to the magnetic field, enabling the system to service itself by detecting gestures and triggering appropriate NFC actions automatically.
Solution Approach 2:
The system performs preliminary detection of motion gestures before initiating the NFC transaction. By detecting the gesture first and then automatically triggering the transaction, the system prepares and executes the interaction in advance, eliminating the need for separate manual alignment steps.
3Ease of operation
If passive inductive coupling elements are added to detect motion gestures, then ease of operation improves through automatic gesture recognition, but device complexity increases due to additional hardware components
Solution Approach 1:
The passive inductive coupling elements serve multiple functions: they enable both NFC communication and motion gesture detection using the same magnetic field interaction. This multi-functionality reduces the need for separate dedicated gesture sensors, thereby limiting the increase in device complexity while maintaining ease of operation.
Solution Approach 2:
The passive inductive coupling elements self-activate when exposed to the magnetic field, enabling the system to service itself by detecting gestures and triggering appropriate NFC actions automatically.
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 automatic data exchange between NFC devices by detecting and interpreting motion gestures, enhancing user experience and operational efficiency without the need for manual alignment.
Implementation Method 1
an antenna module configured to detect a generated magnetic field from a second NFC capable device, the antenna module comprising: a primary inductive coupling element configured to receive and transmit data with the second NFC capable device; and a plurality of passive inductive coupling elements, each passive inductive coupling element configured to provide a detection signal when within range of the generated magnetic field
Data Source
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AI summary
An apparatus and system are provided for interpreting the gestural path of a first NFC device within NFC range of a second NFC device, or the gestural path of the second NFC device within range of the first NFC device, to determine context for a pre-determined function. The second NFC device includes a plurality of inductive coupling elements, each element configured to output a signal when within range of the first NFC device. A controller module receives the signal from each element when the first NFC device is within range and determines a path of the first NFC device across the second NFC device based on a time difference of receipt at the controller of the signals. The plurality of inductive coupling elements may be active or passive, and interact with the first NFC device in a peer-to-peer mode or read/write mode, depending on the configuration of each device.