LED Array Optical Input for Smart Display Text Recognition
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Visible light communication (VLC) technology has limited smartness and application fields, particularly in combination with smart displays and screens.
Innovation Solution
An apparatus and method utilizing a light source array of light-emitting diodes, a driver, processor, and controller to detect and respond to optical signals, recognize patterns formed by turned-on LEDs, and display corresponding text on a screen, enhancing VLC's smartness and application scope.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If VLC technology is used for communication, then energy consumption is reduced and electromagnetic pollution is avoided, but smartness and application fields are limited
Solution Approach 1:
The patent applies multi-functionality by enabling the VLC system to perform both communication and display functions. The display screen can show visual information while the light-emitting components simultaneously transmit data optically, allowing one system to serve multiple purposes and expand application fields without sacrificing energy efficiency
2Adaptability or versatility
If VLC is combined with smart display, then smartness and application fields are improved, but device complexity increases
Solution Approach 1:
The patent merges the communication module and display module into a single integrated system. The light-emitting diodes serve dual purposes: displaying visual information and transmitting optical signals for communication. This combination reduces overall system complexity compared to having separate independent systems while achieving smart display functionality
3Reliability
If optical signals are used for input, then information security is improved, but input method complexity increases
Solution Approach 1:
The system employs self-service by using the display screen's own light-emitting components to both present information and receive optical input signals. The same LEDs that display content can detect reflected or modulated light for input, eliminating the need for separate input devices and simplifying the overall input method while maintaining security
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
This solution improves the smartness of VLC and expands its application fields by enabling remote optical input and automatic text recognition on display screens, integrating VLC with smart displays and illumination systems.
Implementation Method 1
an LED is used as a light source, atmosphere or water is used as a propagation medium, information is transmitted by emitting visible light signals that are invisible to naked eyes and flicker at a high speed, and the visible light signals are converted at a receiver end into photoelectrical signals using a photodiode (PD)
Data Source
AI summary
The present disclosure relates to an apparatus for outputting optically-input texts and a method controlling thereof. The apparatus includes: a light source array, including a plurality of light-emitting diodes disposed in an array; a driver, connected to all the light-emitting diodes in the light array, and configured to detect whether each of the light-emitting diodes has detected a drive optical signal from the outside, and drives the corresponding light-emitting diode to be turned on in response to detecting that the drive optical signal has been detected from the outside; a processor, connected to the light source array and the driver, and configured to recognize a target pattern formed by all the light-emitting diodes that have been turned on; and a controller, including a display screen, and configured to determine a text matching the target pattern as an output text, and displays the output text on the display screen.