NFC-Triggered Wi-Fi File Transfer via Bluetooth Intermediary
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Solution Overview
Problem
Current file transfer methods using NFC require both devices to have NFC chips, which is not feasible for all devices like personal computers, and are costly to configure, limiting the convenience and speed of file transfer.
Innovation Solution
A method where a device with an NFC chip transfers files to a device with an electronic tag that includes device information, allowing the establishment of a communication connection and file transfer through a Bluetooth or Wi-Fi connection without the need for an NFC chip on the receiving device, simplifying user operations and increasing transfer speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If NFC contact-based transfer is used, then file transfer convenience is improved, but hardware cost increases because both devices need NFC chips
Solution Approach 1:
The patent uses Bluetooth as an intermediary communication channel. The NFC chip only needs to read the electronic tag to obtain Bluetooth connection information, then Bluetooth takes over the file transfer task. This mediator approach allows the receiving device to lack an NFC chip while still enabling convenient NFC-triggered transfers.
Solution Approach 2:
The patent copies the functionality of NFC-based transfer by using an electronic tag that contains Bluetooth connection information. Instead of requiring physical NFC chip-to-NFC chip communication, the system copies the information exchange capability through a cheaper electronic tag that can be stored on the receiving device.
2Productivity
If NFC contact-based transfer is used, then file transfer speed is improved through direct connection, but device compatibility deteriorates because many devices lack NFC chips
Solution Approach 1:
The patent makes the transfer system universal by allowing the receiving device to use either an NFC chip or an electronic tag. The transmitting device's NFC chip can communicate with both types of receivers. Additionally, the system can fall back to other communication methods if NFC is unavailable, making it compatible with a broader range of devices including PCs without NFC.
Solution Approach 2:
Bluetooth serves as a universal intermediary that works across all devices regardless of NFC capability. The electronic tag stores Bluetooth information that can be used by any device with Bluetooth functionality, extending compatibility beyond NFC-equipped devices.
3Reliability
If NFC chip is installed on both devices, then direct file transfer capability is improved, but user operation complexity increases due to pairing and connection steps
Solution Approach 1:
The patent performs preliminary action by pre-storing Bluetooth connection information in the electronic tag on the receiving device. When file transfer is needed, the transmitting device's NFC chip simply reads this pre-stored information and initiates connection automatically, eliminating the need for users to manually pair devices or search for connections during the transfer process.
Solution Approach 2:
The system implements self-service through automatic connection establishment. After the NFC chip reads the electronic tag and obtains Bluetooth information, the system automatically completes pairing and connection without requiring user intervention. The file transfer process becomes self-initiated and self-managed, reducing operational 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 file transfer through NFC contact without increasing hardware costs, simplifies user operations, and enhances file transfer rate by establishing a communication connection and exchanging Wi-Fi parameters through Bluetooth, allowing for efficient data transfer.
Implementation Method 1
When a distance between the NFC chip of the first device and the electronic tag of the second device is less than a preset threshold, the first device may obtain the device information of the second device
Data Source
AI summary
A data transfer method includes that a first device displays a first interface. The first interface includes image information of a first file. When a distance between a Near-Field Communication (NFC) chip of the first device and an electronic tag of a second device is less than a preset threshold, the first device obtains a BLUETOOTH address of the second device. The electronic tag includes device information of the second device, and the device information includes the BLUETOOTH address or a tag identifier (ID) used to obtain the BLUETOOTH address. The first device exchanges a WI-FI connection parameter with the second device through a BLUETOOTH connection corresponding to the BLUETOOTH address. The first device establishes a WI-FI connection to the second device. After the WI-FI connection is established, the first device automatically transfers the first file to the second device through the WI-FI connection.