Mobile Terminal Visible Light Communication Sensor Selection
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Solution Overview
Problem
Current mobile terminals lack the capability to perform visible light communication without additional devices, limiting user experience and functionality, especially in environments where electromagnetic waves are sensitive or restricted.
Innovation Solution
A mobile terminal equipped with a light receiving unit, such as an illumination sensor or image sensors, and a controller to extract data from visible light, enabling both transmission and reception of visible light communication, allowing the device to function as both a transmitter and receiver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mobile terminals use traditional electromagnetic wave communication, then communication functionality is available, but security is compromised in electromagnetic-sensitive environments such as planes and hospitals
Solution Approach 1:
The patent changes the communication parameter from electromagnetic waves to visible light, allowing the mobile terminal to communicate securely in electromagnetic-sensitive environments while maintaining communication functionality through optical modulation and detection mechanisms
2Adaptability or versatility
If additional visible light communication devices are added to mobile terminals, then visible light communication capability is achieved, but device complexity increases
Solution Approach 1:
The patent makes the mobile terminal universally capable of both transmitting and receiving visible light communication using existing components. The light receiving unit can detect visible light signals, and the light emitting unit can transmit signals, allowing the device to function as both transmitter and receiver without requiring separate dedicated hardware for each function
Solution Approach 2:
The mobile terminal uses its own existing light emitting components (such as the display screen or LED) to transmit visible light communication signals, and uses its light receiving components (such as the camera or illumination sensor) to detect signals, making the device self-sufficient for bidirectional communication without additional specialized hardware
3Device complexity
If existing mobile terminal components are used for visible light communication, then device complexity is reduced, but communication reliability may be affected
Solution Approach 1:
The controller monitors the signal strength received by the light receiving unit and dynamically selects the optimal sensor (illumination sensor or image sensor) based on feedback. This feedback mechanism ensures reliable communication by adapting to varying light conditions and signal qualities using existing components
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 convenient and secure visible light communication, enhancing user experience by utilizing existing mobile terminal components without the need for additional devices, and providing a user interface for data transmission and reception.
Implementation Method 1
a light receiving unit for receiving visible light emitted from an external light
Implementation Method 2
a controller for extracting data corresponding to an on/off state of the external light from the received visible light
Data Source
AI summary
A mobile terminal is disclosed. The mobile terminal for visible light communication, according to one embodiment of the present invention, uses visible light outputted from a lighting that turns on/off according to a preset condition, and the mobile terminal comprises: a light receiving unit for receiving visible light; a control unit for extracting, from the received visible light, data corresponding to the turning on/off; and a display unit for displaying information based on the extracted data, wherein the light receiving unit comprises at least one among an illuminance sensor, a first image sensor disposed on the front of the mobile terminal, and a second image sensor disposed on the back of the mobile terminal, and the control unit controls so that visible light communication is performed by using, among the illuminance sensor, the first image sensor, and the second image sensor, the sensor that receives visible light having the greatest signal strength.