OLED Display Visible Light Communication Encoding
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Solution Overview
Problem
Existing OLED display technologies do not effectively incorporate visible light communication capabilities to transmit additional information, such as location data, beyond standard image display.
Innovation Solution
An OLED display apparatus with an OLED display unit, data memory, and controller that outputs images with additional information encoded in flickering patterns not perceivable to the human eye, along with a visible light communication terminal to detect and process this information for external display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If OLED display apparatus is used for standard image display only, then display quality is maintained, but communication functionality is lost
Solution Approach 1:
The OLED display apparatus is designed to perform multiple functions: standard image display and visible light communication. The same OLED display unit serves both purposes by modulating light intensity to encode data while maintaining display quality, eliminating the need for separate communication hardware.
Solution Approach 2:
The patent combines the display function and communication function into a single integrated system. The OLED controller simultaneously manages display rendering and data modulation, merging two separate functions into one unified apparatus that achieves both image display and visible light communication.
2Loss of information
If additional information is encoded in visible light communication, then data transmission capability is improved, but human eye recognition of image quality deteriorates due to flickering
Solution Approach 1:
The patent uses periodic flickering of the OLED display at high frequencies to encode data. By modulating the display at frequencies above human visual perception thresholds, the system transmits information through periodic light intensity changes that remain imperceptible to users, thus avoiding visible flickering while enabling data communication.
Solution Approach 2:
The system changes the temporal parameters of light emission by introducing controlled flickering at specific frequencies. This parameter modification enables data encoding in the time domain while maintaining spatial and perceptual quality, as the flickering occurs at frequencies beyond human visual detection capabilities.
3Productivity
If flickering is used to encode additional information, then communication efficiency is improved, but detection precision by human eye deteriorates
Solution Approach 1:
The patent replaces human visual detection with electronic optical sensors for detecting flickering. Instead of relying on human eyes to perceive or detect the modulated light, the system uses photodetectors or camera sensors that can accurately measure high-frequency light intensity variations, enabling precise data recovery without human perception limitations.
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 both image display and visible light communication by encoding and decoding additional information within the flickering patterns, facilitating applications like location guidance and data transmission.
Implementation Method 1
Organic Light Emitting Diode (OLED) display apparatus... OLED display unit may output an image for external display and additional information included in the image
Implementation Method 2
optical communication receiver for detecting flickering of visible light applied from outside and providing information included in the visible light to the OLED controller
Data Source
AI summary
An OLED display capable of visible light communication and a visible light communication system having same are disclosed. The OLED display comprises an OLED display unit, a data memory unit, and an OLED control unit. The OLED display unit emits an image which is outwardly displayed and additional information which is included in the image. The data memory unit is storing image data corresponding to the image and additional data corresponding to the additional information. The OLED control unit controls the OLED display unit to display the image by using the image data provided by the data memory unit and controls the flicker of the image within a range which cannot be perceived by human eyes so that the additional information is included in the image by using the additional data provided by the data memory unit. As described above, the OLED display displays not only a general image but also additional information included in the image and thus can perform an image display function together with a reception function in visible light communication.