NFC Flip Cover Wireless Power and Data Transmission
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Solution Overview
Problem
Existing mobile electronic devices lack an efficient method to control and communicate with flip cover devices using near field communication (NFC) for power and data transmission, which limits the functionality and integration of flip cover devices with NFC capabilities.
Innovation Solution
A mobile system that includes an electronic device and a flip cover device, where the electronic device emits a 13.56 MHz electromagnetic wave to transmit power and data to the flip cover device, allowing it to display information and communicate with external NFC readers, while inhibiting emission when the flip cover is open to conserve power and maintain NFC performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the electronic device continuously emits electromagnetic waves for power and data transmission to the flip cover device, then the flip cover device can continuously display information, but the battery consumption increases and NFC performance degrades
Solution Approach 1:
The electronic device implements periodic transmission of electromagnetic waves instead of continuous transmission. The transmission is activated only when the flip cover device is in the closed state (detected via sensor), and deactivated when opened. This periodic action reduces battery consumption while ensuring the flip cover device receives power and data only when needed for display functionality.
2Power
If the electronic device emits electromagnetic waves for power transmission, then the flip cover device can operate the display module, but the NFC communication capability is degraded
Solution Approach 1:
The electronic device dynamically switches between two operational modes: electromagnetic wave transmission mode for power and data transmission to the flip cover, and NFC communication mode for external NFC reader communication. The device uses sensor detection of the flip cover state to determine which mode to activate, ensuring that both power transmission and NFC communication can function reliably when their respective conditions are met.
3Adaptability or versatility
If the electronic device transmits both power and data through electromagnetic waves, then the flip cover device can display information independently, but the device complexity increases
Solution Approach 1:
The electronic device utilizes the existing NFC device's electromagnetic wave capability to serve dual purposes: both NFC communication with external readers and power/data transmission to the flip cover device. By activating the wireless power transmission mode of the NFC device, the system avoids adding separate transmission hardware, thereby reducing overall device complexity while enabling independent display functionality in the flip cover.
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 power and data transmission to the flip cover device, allowing it to display information and perform NFC operations without degrading the NFC performance of the electronic device, while reducing battery consumption and manufacturing costs.
Implementation Method 1
The electronic device may be configured to communicate with an external device through a near field communication (NFC) scheme. The flip cover device may be configured to receive electrical power and information data from the electronic device through a first electromagnetic wave emitted from the electronic device.
Implementation Method 2
The flip cover device may be configured to receive electrical power and information data from the electronic device through a first electromagnetic wave emitted from the electronic device. The flip cover device may be further configured to display the information data received from the electronic device based on the received electrical power.
Data Source
AI summary
A mobile system includes an electronic device and a flip cover device. The electronic device communicates with an external device through a near field communication (NFC) scheme. The flip cover device includes a back side cover, which is installed on a back surface of the electronic device to surround the back surface of the electronic device, a front side cover, which selectively covers a front surface of the electronic device and includes a display module, and a connector device, which connects the back side cover and the front side cover. The flip cover device receives power and information data from the electronic device through a first electromagnetic wave emitted from the electronic device and displays the information data on the display module using the power.