Visible Light Communication Array for Parallel Data Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current visible light communication technologies face inefficiencies in data transmission and reception, particularly when using single LEDs, which limit the speed and accuracy of signal transmission due to sequential light-dark state changes, leading to data loss and bit errors.
Innovation Solution
A visible light communication system and method utilizing a control unit and a visible light emitting unit array to convert target data into light emission control instructions, allowing simultaneous transmission of multiple data bits as light-dark states across an array of light emitting units, and a receiving unit to parse image data into target data using decoding rules, enhancing transmission efficiency and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single LED is used for visible light communication, then the device complexity is low, but the transmission efficiency and speed are limited due to sequential light-dark state changes
Solution Approach 1:
The patent divides the light emitting unit into an array of multiple independent light emitting units (e.g., multiple LEDs or LCD pixels), where each unit can independently change its light-dark state. This segmentation allows parallel transmission of multiple data bits simultaneously, dramatically improving transmission efficiency from single-bit sequential transmission to multi-bit parallel transmission.
Solution Approach 2:
The patent transitions from a single light emitting unit to a two-dimensional array of light emitting units, enabling spatial multiplexing of data transmission. By arranging light emitting units in rows and columns, the system can transmit multiple data bits simultaneously across different spatial positions, effectively adding a spatial dimension to the communication process.
2Reliability
If a single LED performs sequential light-dark state changes for data transmission, then the encoding rule is simple, but data loss and bit errors occur due to limited transmission speed
Solution Approach 1:
By segmenting the light emitting unit into an array of independent units, each unit can transmit a separate data bit simultaneously. This parallel transmission approach increases the overall transmission speed and reduces the time required to transmit complete data packets, thereby minimizing data loss and improving transmission reliability.
Solution Approach 2:
The patent uses multiple copies of the light emitting unit arranged in an array, where each copy represents a data bit. This replication allows simultaneous transmission of multiple bits, effectively copying the transmission function across multiple spatial positions to achieve higher throughput and better reliability.
3Productivity
If multiple light emitting units are arranged in an array for parallel transmission, then transmission efficiency improves, but the device complexity and control instruction generation increase
Solution Approach 1:
The patent replaces complex mechanical or sequential control mechanisms with a systematic encoding rule that converts data bits into light emission control instructions. By establishing a clear mapping between data bits and light emitting unit states, the control unit can efficiently generate instructions without complex processing, balancing the increased parallelism with systematic control.
4Speed
If sequential light-dark state changes are used for data transmission, then the modulation method is simple, but the transmission speed and data capacity are limited
Solution Approach 1:
The patent segments the data transmission process into parallel operations across multiple light emitting units, each capable of independent modulation. This allows simultaneous transmission of multiple bits, dramatically increasing transmission speed while maintaining relatively simple modulation logic for each individual unit.
Solution Approach 2:
The patent adds a spatial dimension to the modulation process by arranging light emitting units in an array. Instead of sequentially modulating a single unit, the system modulates multiple units in parallel across different spatial positions, effectively multiplying the transmission capacity without significantly increasing the complexity of individual modulation operations.
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
The system significantly improves transmission efficiency by enabling multiple data bits to be transmitted and received simultaneously, reducing data loss and bit errors, and allowing for more complex data communication compared to single LED systems.
Implementation Method 1
Visible light communication usually uses a light-emitting diode (LED) as a data transmitting end
Implementation Method 2
a photodiode as a data receiving end
Data Source
AI summary
The present application discloses a signal transmitting device based on visible light communication, which includes a first control unit and a visible light emitting unit array, wherein the first control unit is configured to acquire target data and generate a light emission control instruction based on the target data according to a set encoding rule, and the light emission control instruction includes an instruction for controlling the light-dark state of each light emitting unit in the visible light emitting unit array, and the visible light emitting unit array is configured to transmit the target data in form of a visible light signal according to the light emission control instruction. The present application further discloses a signal receiving device based on visible light communication, a visible light communication system and a visible light communication method.