Dynamic Barcode Display Using Camera Decoding
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Solution Overview
Problem
Existing two-dimensional barcode displays are typically in permanent form, limiting interactivity and requiring users to manually type URLs on small cellphone screens, which is error-prone due to the small size and awkwardness of typing on cellphones.
Innovation Solution
A cellphone with a camera captures a barcode on an electronic screen, decodes it into a URL, and uses wireless internet to access the website, which then sends updated images back to the screen, allowing multiple users to interactively change the display without the need for transceivers on the screen, reducing hardware costs and enabling bidirectional interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a permanent barcode display is used, then the display is simple and reliable, but the interactivity and adaptability are limited
Solution Approach 1:
The patent implements dynamic content delivery by allowing the display to show different images and barcodes based on user interactions. The system transitions from static permanent displays to dynamic content that changes in real-time based on user inputs captured through the camera interface.
Solution Approach 2:
The system establishes a feedback loop where user actions (capturing images with camera) trigger system responses (displaying new images). This bidirectional interaction enables the display to adapt to user behavior, creating an interactive experience while maintaining system simplicity.
2Ease of operation
If users manually type URLs on cellphone screens, then no additional hardware is needed, but the operation is error-prone and inconvenient
Solution Approach 1:
The patent replaces the mechanical typing process with an optical recognition system. Instead of manually entering URLs through physical keyboard input, users capture barcodes using the camera, and the system automatically decodes and processes the information, eliminating typing errors.
Solution Approach 2:
The barcode serves as an intermediary between the user and the URL. Rather than directly typing the URL, users interact with the barcode representation, which the system then translates into the actual web address, reducing input complexity and improving accuracy.
3Adaptability or versatility
If transceivers are installed on the screen for bidirectional interaction, then interactivity is enabled, but hardware costs increase
Solution Approach 1:
The system uses the cellphone's existing camera and processing capabilities to perform the interaction function, rather than requiring specialized transceiver hardware on the display. This multi-uses the cellphone's built-in features for what would otherwise require additional dedicated components.
Solution Approach 2:
The cellphone itself performs the interaction tasks using its own camera and processing power. The display system doesn't need active transceivers because the cellphone autonomously captures images, decodes barcodes, and manages the interaction sequence without requiring the display to have built-in communication hardware.
Data Source
AI summary
A cellphone with a camera takes a photo of a barcode in a screen that can show different images. The barcode is decoded into a URL, and the cellphone uses wireless Internet access to visit the website of the URL. The website then makes a different image that also has a barcode of a URL, and sends it to the screen for display. This can increase the interactivity of the screen and its value to advertisers. Several users with cellphones might simultaneously interact with the screen in this manner.