NFC-Triggered Power State Switching for Transaction Cards
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Solution Overview
Problem
Transaction cards with internal power sources face challenges in conserving power and extending the time before needing recharge, as they must constantly supply power to components that determine when to activate, leading to reduced functionality and shorter operational periods.
Innovation Solution
Implementing a mechanism that allows transaction cards to switch between unpowered and powered states based on NFC signals, selectively providing power only when necessary, thereby reducing unnecessary power consumption and extending the time before recharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery constantly supplies power to components that determine when to activate, then the transaction card can maintain readiness for transactions, but the power source depletes faster and requires more frequent recharging
Solution Approach 1:
The patent extracts the power consumption function from continuous operation to event-triggered operation. The battery is decoupled from constant power supply to activation-determination components, and power is only supplied when an NFC signal is detected, thereby extending the operational period while maintaining transaction readiness through on-demand activation.
Solution Approach 2:
The system transitions from continuous power supply to periodic/power-on-demand operation. Power is supplied in discrete intervals triggered by NFC signals rather than continuously, allowing the battery to conserve energy during idle periods while ensuring the card is fully operational when needed for transactions.
2Adaptability or versatility
If the battery provides continuous power to all components, then the transaction card maintains full functionality at all times, but unnecessary power is consumed reducing the time before recharge is needed
Solution Approach 1:
The patent implements dynamic power management where the transaction card adapts its functional state based on external triggers. The system transitions between a low-power dormant state and a fully-powered active state, ensuring full functionality is available when needed (upon NFC signal detection) while minimizing energy loss during idle periods through selective component activation.
3Speed
If the transaction card remains in a powered state to ensure immediate transaction capability, then transaction response time is reduced, but the internal power source depletes faster
Solution Approach 1:
The system performs preliminary detection of transaction intent through NFC signal recognition before activating full power. This allows the card to remain in a low-power state until a transaction is actually initiated, at which point power is rapidly supplied to ensure immediate transaction capability, thus maintaining fast response time while minimizing overall power consumption.
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 approach increases the available power for transaction card components and extends the time before the internal power source needs recharging, ensuring full functionality between transactions and conserving resources by avoiding premature power depletion.
Implementation Method 1
receiving a signal from a near-field communication (NFC) device
Data Source
AI summary
A controller of a transaction card may cause the transaction card to be in a first state. The transaction card may include a battery and at least one other component. In the first state, the battery does not provide power to the at least one other component of the transaction card. The transaction card may receive a signal from a near-field communication (NFC) device and may cause the transaction card to be in a second state based on receiving the signal. In the second state, the battery provides power to the at least one other component of the transaction card. The transaction card may perform a transaction based on the transaction card being in the second state.