NFC Module Power-Off PICC Selection via Key Mapping
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Solution Overview
Problem
Existing portable terminals cannot select a desired Proximity Interface Coupling Card (PICC) among multiple PICCs included in the Near Field Communication (NFC) module when the terminal is in a power-off state, limiting user convenience and NFC functionality.
Innovation Solution
A method and apparatus that activate the NFC module in a power-off state, allowing users to input a key signal to select a specific PICC among multiple PICCs, enabling the activation of the corresponding PICC using function keys like volume or camera keys, even when the terminal is turned off.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the portable terminal is in power-off state, then power consumption is reduced, but the ability to select PICC is lost
Solution Approach 1:
The patent segments the power management by introducing a separate low-power mode for the NFC module that is independent from the main terminal power state. The NFC module can remain in a standby state with minimal power consumption while the main terminal is completely powered off, allowing PICC selection without full system activation.
Solution Approach 2:
The patent implements preliminary action by pre-configuring the NFC module to respond to specific key inputs even when the terminal is powered off. The module is prepared in advance to recognize and process selection commands from physical keys, enabling PICC selection before the main system needs to be activated.
2Adaptability or versatility
If multiple PICCs are included in the NFC module, then NFC functionality is enhanced, but the complexity of PICC selection increases
Solution Approach 1:
The patent applies self-service by enabling the NFC module to automatically manage multiple PICCs through a simple key-based selection mechanism. Instead of requiring complex software interfaces or user interaction with the main operating system, the module autonomously handles PICC selection through dedicated physical keys that directly trigger specific PICC activation.
Solution Approach 2:
The patent makes existing physical keys (volume up/down, camera key) universal by assigning them dual functionality: their original functions when the terminal is on, and PICC selection functions when the terminal is off. This eliminates the need for separate dedicated PICC selection keys while maintaining simplicity.
3Ease of operation
If a separate PICC selection key is added, then PICC selection in power-off state is enabled, but device complexity and cost increase
Solution Approach 1:
The patent applies universality by making existing physical keys serve multiple purposes. The volume up/down keys and camera key can function as PICC selection keys when the terminal is powered off, while maintaining their original functions when powered on. This approach adds no physical components and incurs no additional manufacturing cost.
Solution Approach 2:
The existing key structure serves itself by being repurposed for dual functionality. The same physical keys that users already interact with for volume control and camera functions are also used for PICC selection, eliminating the need for separate dedicated keys and reducing overall device complexity.
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 users to select and use a desired PICC in a power-off state, improving convenience and ensuring uninterrupted NFC services without the need for a separate PICC selection key, thus minimizing cost and enhancing user experience.
Implementation Method 1
The NFC is a type of Radio Frequency IDentification (RFID) that may be implemented using a non-contact type near field communication module that uses a 13.56 MHz frequency band
Data Source
AI summary
An apparatus and method for selecting a Proximity Interface Coupling Card (PICC) of a portable terminal having a Near Field Communication (NFC) module including multiple PICCs are provided. The method includes activating the NFC module when the portable terminal is at a power-off state, determining whether a key signal for activating one PICC among the multiple of PICCs is inputted in the activated NFC module, and activating the PICC mapped with the inputted key signal when the key signal is inputted.