Visual Card Displaying Data Outside Magnet Field
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Solution Overview
Problem
IC cards can only display information when within a magnet field, making it inconvenient for users as the information is not accessible once the card is removed from the field.
Innovation Solution
A visual card with a main control module, antenna module, power management module, and signal converting module that allows continuous display of information by monitoring an exit signal and using a battery or super capacitor for power, enabling communication and data display even outside the magnet field.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If IC card uses magnet field-based display technology, then information can be displayed during swiping, but information cannot be displayed after the card is removed from the magnet field
Solution Approach 1:
The card pre-loads power into the super capacitor during magnet field swiping, so that when removed from the field, sufficient energy is already stored to drive the display for an extended period without requiring continuous external power
Solution Approach 2:
The super capacitor acts as an energy intermediary between the magnet field power source and the display module, storing energy during swiping and releasing it continuously to maintain display operation after the card leaves the field
2Duration of action of stationary object
If IC card uses battery or super capacitor for continuous power, then display can continue outside magnet field, but device complexity increases
Solution Approach 1:
The super capacitor serves multiple functions: it acts as a power source for continuous display operation, a power management element that regulates voltage during and after swiping, and an energy storage device that captures power from the magnet field for later use, thereby reducing the need for separate dedicated components
Solution Approach 2:
The system changes the electrical parameters (voltage, current) dynamically based on whether the card is in or out of the magnet field, with the super capacitor automatically adjusting its charge/discharge characteristics to match the power availability and display requirements, simplifying control logic
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 the visual card to continuously display key information, enhancing user convenience by maintaining data accessibility beyond the magnet field.
Implementation Method 1
the antenna module is configured to be in mutual induction with the external card read device
Implementation Method 2
the signal converting module is configured to convert the electronic signal generated from the mutual induction of the antenna module
Implementation Method 3
the power management module is a battery
Implementation Method 4
the power management module is a super capacitor
Data Source
AI summary
The present disclosure relates to the field of communications and, particularly to a visual card and an operating method for the visual card; the visual card includes a main control module, an antenna module, a power management module, a displaying module and a signal converting module; the main control module is connected to all of the antenna module, the power management module, the displaying module and the signal converting module, the signal converting module is connected to the antenna module; the main control module is configured to communicate with an external card read device via the antenna module, update and store key information; the main control module is further configured to monitor an exit signal according to an electronic signal input by the signal converting module.