Projector Display Encoding for Wireless LAN Connection Setup
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Solution Overview
Problem
Establishing network connections between personal computers and projectors via wireless LAN is cumbersome due to the need for manual input of connection information, such as IP addresses and passwords, and the risk of incorrect information being attached or recognized.
Innovation Solution
An image display device that encodes connection information into a recognizable code and displays it as an image, allowing easy recognition and input by the user, and divides the display area to show connection states and information for multiple devices, enabling efficient network management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If connection information is manually input in the PC, then network connection can be established, but the operation becomes cumbersome and time-consuming
Solution Approach 1:
The projector displays connection information (IP address, ESSID, password) before the PC needs to connect, allowing the user to obtain the information in advance without manual configuration on the PC side. The information is prepared and made available proactively by the projector.
Solution Approach 2:
Instead of manually typing connection information, the PC captures an image of the displayed information and uses OCR to automatically extract and copy the connection details, eliminating manual input errors and saving time.
2Ease of operation
If contact-free tags or barcodes are attached to the projector, then connection information can be easily read, but the attachment operation is required and wrong information may be attached
Solution Approach 1:
Physical tags or barcodes are replaced with digital information display on the projector screen. The connection information is projected as visual content that can be captured by the PC's camera, eliminating the need for physical attachment and reducing errors.
3Reliability
If the portable information terminal is moved close to the projector for reading ID information, then connection can be established, but the user must move the terminal every time connection is performed
Solution Approach 1:
The connection information is copied from the projector display to the PC through image capture and OCR recognition. The PC actively obtains the information without requiring the user to physically move the terminal close to the projector, making the process more convenient.
4Loss of information
If multiple images are displayed simultaneously, then network states of multiple devices can be monitored, but the display area management becomes complex
Solution Approach 1:
The display area is divided into multiple regions, with each region dedicated to showing connection information from a specific image supply device. This segmentation allows multiple devices to be monitored simultaneously while maintaining organized and manageable display structure.
Data Source
AI summary
An image display device for displaying an image based on an image signal input from a plurality of image supply devices via a network includes a storage section storing connection information used for the image supply device being connected to the image display device via the network, an encoding section encoding the connection information to generate a connection information code which can be recognized by the image supply device, a display section displaying the connection information code and the image based on the image signal input from the image supply device, and an image control section dividing an image display area of the display section into a plurality of divisional areas, and displaying the image based on the image signal input from respective one of the image supply devices in each of the divisional areas.