Domestic Appliance Network Setup via NFC Smartphone Pairing
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Solution Overview
Problem
Domestic appliances face challenges in connecting to wireless home networks due to limited input possibilities and the difficulty in selecting the correct network, especially when they lack specialized displays and input means.
Innovation Solution
A method using a portable communications terminal, such as a smartphone, to establish a separate wireless communication link with the domestic appliance via a close-range standard like NFC, allowing access data to be transferred and used to connect the appliance to the home network without direct user interaction on the appliance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If access data is entered directly into the domestic appliance using available input means, then the appliance can be connected to the wireless home network, but the process becomes complex and difficult due to limited input possibilities and lack of specialized displays
Solution Approach 1:
The patent introduces a portable terminal device as an intermediary between the user and the domestic appliance. The terminal device displays network selection options and receives user input, then transmits the selected network's access data to the appliance. This mediator resolves the contradiction by providing a user-friendly interface while keeping the appliance's input requirements minimal.
Solution Approach 2:
Instead of having the user directly input data into the appliance's limited interface, the system inverts the process: the appliance receives minimal input (trigger signal), the terminal device handles complex network selection and data preparation, then the appliance automatically connects using the provided access data. This inversion places the complexity in the terminal device rather than the appliance.
2Adaptability or versatility
If the domestic appliance is registered in multiple networks, then flexibility is increased, but security is compromised as unauthorized access becomes possible
Solution Approach 1:
The portable terminal device acts as an authentication intermediary that verifies user intent before transmitting access data. The terminal device displays network information, requires explicit user selection, and confirms the connection action. This intermediary layer ensures that even though the appliance can connect to different networks, each connection is authorized through the secure terminal interface.
Solution Approach 2:
The system implements self-service authentication where the terminal device automatically manages the secure transmission of access data to the appliance. Once the user selects a network on the terminal, the terminal device handles the authentication process and data transmission automatically, eliminating the need for manual data entry and reducing security risks.
3Ease of operation
If the domestic appliance is equipped with specialized display and input means, then network selection becomes easier, but the device complexity and cost increase
Solution Approach 1:
The patent shifts the display and input functionality from the domestic appliance to the portable terminal device. The terminal device, which already possesses sophisticated display and input capabilities, serves as the network selection interface. The appliance maintains its simple control panel with only basic trigger functionality, thus resolving the contradiction by relocating complexity to an external device.
4Reliability
If close-range communication with encrypted link is used, then security is enhanced, but the communication range and flexibility are reduced
Solution Approach 1:
The communication process is segmented into two distinct phases: (1) secure close-range communication for access data transmission using encrypted links, and (2) subsequent normal-range wireless communication for actual network operation. This segmentation allows the system to benefit from both encrypted secure communication and extended communication range, as each phase uses the appropriate communication method for its specific purpose.
Data Source
AI summary
A method connects a domestic appliance to a wireless home network. The method includes receiving access data for the home network by a portable communications terminal, setting up a wireless communication link between the domestic appliance and the portable communications terminal according to a predetermined close-range communications standard, which communication link is separate from the home network, and transmitting control commands from the portable communications terminal to the domestic appliance via the communication link. The control commands control the domestic appliance to connect to the wireless home network using the access data.