Display Device Connection via Ultrasonic Identifier Signals
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Solution Overview
Problem
Current wireless communication technologies for display devices require manual user intervention and expose authentication information, posing inconvenience and security risks.
Innovation Solution
A display device connection system utilizing a cloud server to facilitate automatic communication connections between a terminal device and a display device through audio signals, specifically ultrasonic signals, which include an identifier code based on hardware features, enabling secure and convenient connection management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual wireless connection methods are used, then users can establish communication connections between terminal devices and display devices, but the process is inconvenient and exposes authentication information
Solution Approach 1:
The patent introduces a cloud server as an intermediary to manage authentication information. Instead of exposing authentication details during manual connection processes, the cloud server acts as a mediator that verifies device identities and establishes secure connections, thereby improving both ease of operation and authentication security
Solution Approach 2:
The patent extracts authentication information from the direct device-to-device communication process and stores it securely on the cloud server. This separation removes sensitive authentication data from the connection establishment process, making the process more convenient while maintaining security
2Productivity
If users manually activate wireless local area network and search for display devices, then connection can be established, but the process is time-consuming and complex
Solution Approach 1:
The patent implements preliminary action by having display devices continuously broadcast their identification information through audio signals before any connection request is made. Terminal devices can passively receive this information, eliminating the need for users to manually activate networks or search for devices, thus reducing both time and complexity
Solution Approach 2:
The patent replaces the mechanical interaction of manual network activation and device searching with an acoustic field-based system. Display devices broadcast identification through audio signals, and terminal devices receive these signals automatically, substituting manual operations with automated acoustic communication
3Reliability
If authentication information is transmitted during manual connection, then devices can verify each other, but authentication information may be exposed
Solution Approach 1:
The cloud server serves as a secure intermediary that handles all authentication information transmission. Devices verify each other through the cloud server's mediation rather than direct communication, ensuring that authentication data never exposes to potential eavesdroppers while maintaining verification reliability
Solution Approach 2:
The patent uses audio signals as a copy mechanism to transmit device identification information. Instead of transmitting sensitive authentication credentials, the system creates an acoustic copy of device identifiers that can be verified without exposing secret authentication data
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 secure and efficient communication connections between terminal and display devices within the same space, preventing connections to incorrect devices and reducing manual intervention, while ensuring data privacy.
Implementation Method 1
The audio signal includes an ultrasonic signal that is supported by sound transmission data technology, wherein the frequency of the ultrasonic signal is greater than 20,000 Hz
Data Source
AI summary
A display device, a display device connection system, and a method for display device connection are provided. The method includes the following steps. An audio signal including an identifier code is broadcasted by the display device. The audio signal is received by a terminal device to obtain the identifier code. A cloud server is accessed by the terminal device to obtain connection information corresponding to the identifier code. The terminal device is communicatively connected to the display device according to the connection information.