Light Wave Communication Dual Stream Detection
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Solution Overview
Problem
In light wave communication, determining which lights are transmitting data in a scene with multiple lights is a time-consuming process due to the need for region-of-interest (ROI) sub-space sampling, especially when multiple lights are present.
Innovation Solution
The technique involves using a single modulated light source to transmit two data streams, where a low-frequency amplitude envelope acts as a beacon for the high-frequency data stream, allowing the image sensor to receive both streams without ROI sub-space sampling, utilizing LED lights that can quickly transition between on and off states, and configuring the image sensor to ingest both streams by increasing the effective frame rate through ROI sub-sampling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If region-of-interest (ROI) sub-space sampling is performed sequentially to determine which lights are transmitting data in a scene with multiple lights, then the data transmission can be established, but the process becomes time-consuming
Solution Approach 1:
The patent segments the data transmission process by using a low-frequency amplitude envelope as a beacon signal that separately indicates which lights are transmitting high-frequency data streams. This allows the receiver to identify active transmitters without performing time-consuming sequential ROI sampling on all lights, thus resolving the contradiction between reliable data transmission establishment and reducing time loss.
2Productivity
If a single light source transmits two data streams (low-frequency envelope and high-frequency data), then data transmission efficiency is improved, but the complexity of detecting and measuring the light signals increases
Solution Approach 1:
The patent employs periodic action by using a low-frequency amplitude envelope that periodically modulates the high-frequency data stream from a single light source. This periodic structure allows the receiver to easily distinguish and separate the two data streams through frequency-based detection, improving productivity while managing the difficulty of detection through clear frequency differentiation.
Solution Approach 2:
The low-frequency amplitude envelope acts as an intermediary or mediator that carries information about which light source is active and guides the receiver to properly detect and measure the accompanying high-frequency data stream. This intermediary signal simplifies the detection process by providing a clear indicator that reduces the overall complexity of receiving dual data streams from a single light.
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 method enables efficient transmission of two data streams from a single light source, reducing the time required to determine which lights are transmitting data and increasing the effective frame rate of the image sensor, thereby improving data transmission efficiency in light wave communication systems.
Implementation Method 1
utilizing LED lights that can quickly transition between on and off states
Data Source
AI summary
An apparatus for light wave communications is described herein. The apparatus includes an image sensor and a region of interest (ROI) sub-sampler. The image sensor is to receive a first low frequency data stream from a light source. Additionally, data from the ROI sub-sampler is used to configure the image sensor to receive a second data stream from the light source.