NFC Priority Management via Dedicated Hardware Connection
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Solution Overview
Problem
Near field communication (NFC) devices often experience disruptions in other functions, such as screen refresh processes, due to electromagnetic field emissions, which interfere with ultra-wideband communication and other functions integrated into NFC devices like mobile phones.
Innovation Solution
A priority management system is implemented using a physical connection between a near-field emission circuit and a microcontroller or ultra-wideband communication circuit, where binary signals are exchanged to inhibit or allow electromagnetic field emissions, ensuring that NFC emissions do not interfere with screen refreshes or other critical operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If NFC device emits electromagnetic field for near field communication, then NFC communication function is enabled, but other functions such as screen refresh and ultra-wideband communication are disrupted
Solution Approach 1:
The patent implements priority management by establishing a dedicated hardware connection that enables the microcontroller to preemptively control the NFC emission circuit before interference occurs. The microcontroller can assert a priority signal to inhibit NFC emissions during critical operations such as screen refresh cycles or ultra-wideband communication periods, preventing the harmful interference before it happens.
Solution Approach 2:
The patent introduces a dedicated hardware connection as an intermediary mechanism between the microcontroller and the NFC emission circuit. This connection acts as a mediator that transmits binary priority signals to coordinate between the NFC function and other device functions, allowing the microcontroller to regulate NFC emissions based on the operational state of other components without direct intervention in the NFC circuit operation.
2Device complexity
If NFC circuit operates independently without priority management, then NFC emission control is simple, but interference with other device functions occurs
Solution Approach 1:
The patent introduces a dedicated hardware connection as an intermediary mechanism between the microcontroller and the NFC emission circuit. This connection acts as a mediator that transmits binary priority signals to coordinate between the NFC function and other device functions, allowing the microcontroller to regulate NFC emissions based on the operational state of other components without direct intervention in the NFC circuit operation.
Solution Approach 2:
The patent implements a feedback mechanism where the microcontroller monitors the operational state of device functions and sends corresponding priority signals to the NFC emission circuit. When other functions such as screen refresh or ultra-wideband communication are active, the microcontroller asserts a high-state binary signal to inhibit NFC emissions, creating a closed-loop control system that dynamically adjusts NFC operation based on real-time device state.
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
This solution effectively prevents NFC field emissions from disrupting other functions, such as screen refreshes and ultra-wideband communications, by prioritizing operations and managing electromagnetic field emissions through dedicated binary signal control, thereby maintaining device functionality without interference.
Implementation Method 1
These systems use a radiofrequency electromagnetic field generated by a device (terminal or reader) to communicate with another device (card)
Implementation Method 2
The connection conveys a first binary signal for inhibiting one of the two circuits, transmitted by the other of the two circuits
Data Source
AI summary
A device includes a first circuit that includes a near-field emission circuit, a second circuit, and a hardware connection linking the first circuit to the second circuit. The hardware connection is dedicated to a priority management between the first circuit and the second circuit. In addition, priority management information can be communicated between a near-field emission circuit and a second circuit. The communicating occurs between a dedicated hardware connection connecting the near-field emission circuit to the second circuit.