Visible Light Communication Grayscale Adjustment for Display Devices
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Solution Overview
Problem
Existing visible light communication technologies face issues with image distortion and decoding failures due to large grayscale amplitudes and inability to recognize small grayscale values, leading to inefficient information transmission.
Innovation Solution
A method and device that adjust grayscale values of image frames based on binary code streams, creating distinct first and second image frames with opposite grayscale variations to enhance visible light communication efficiency and user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If large grayscale amplitudes are used for visible light communication, then information transmission capability is improved, but image distortion increases and decoding reliability deteriorates
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting grayscale compensation values based on ambient light conditions. The system changes the grayscale parameters from fixed large amplitudes to adaptive values that optimize both information transmission and decoding reliability under different lighting environments
Solution Approach 2:
The patent implements feedback mechanisms where the display device adjusts grayscale compensation based on detected ambient light levels. This feedback loop ensures that information transmission maintains optimal performance while preventing image distortion and decoding failures
2Loss of information
If large grayscale amplitudes are used for visible light communication, then information transmission capability is improved, but image distortion increases
Solution Approach 1:
The system changes grayscale parameters from fixed large amplitudes to adaptive values that optimize both information transmission and image quality. By adjusting compensation values based on ambient light, the system maintains accurate image representation while enabling effective visible light communication
3Loss of information
If grayscale values are adjusted for visible light communication, then information transmission is enabled, but user viewing experience deteriorates due to perceptible grayscale differences
Solution Approach 1:
The patent applies local quality by making grayscale adjustments targeted at specific regions or pixels that do not affect overall image perception. The compensation is applied locally to enable communication while maintaining global image quality that users perceive as normal
Solution Approach 2:
The system changes grayscale parameters adaptively based on ambient light conditions, ensuring that adjustments are imperceptible to users while effective for communication. The parameter changes are optimized to fall below human visual detection thresholds
4Productivity
If grayscale compensation is applied for visible light communication, then transmission efficiency is improved, but device complexity increases
Solution Approach 1:
The patent applies self-service by enabling the display device to automatically adjust grayscale compensation values based on its own ambient light detection capabilities. The system serves itself by using existing sensors and processing resources without requiring additional complex hardware
Data Source
AI summary
The present disclosure is directed to a display method and a display device, a visible light communication transmission method and device, and a computer-readable storage medium. The display method includes: acquiring an image frame to be displayed and a corresponding binary code stream; adjusting a grayscale value of a corresponding pixel point in the image frame to be displayed based on a grayscale adjustment information set corresponding to each code element in the binary code stream, to obtain a first image frame and a second image frame that are different from the image frame to be displayed; and displaying the first image frame and the second image frame.