Image Sensor Pixel Segmentation for Visible Light Communication
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Solution Overview
Problem
Visible light communications in mobile scenarios face performance issues due to movement and complex transmission environments, leading to reduced communication efficiency between sending and receiving devices.
Innovation Solution
The method involves determining communication performance between visible light signal receiving and transmitting devices and adjusting the charge readout mode of the image sensor by dividing first logic pixel units into multiple second logic pixel units, each comprising physical pixel units, to improve signal reception and compensate for performance reductions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If visible light communications are applied in mobile scenarios, then the coverage and accessibility of communication systems are improved, but communication performance deteriorates due to device movement and complex transmission environments
Solution Approach 1:
The patent implements dynamic adjustment of image sensor parameters (exposure time, gain, readout mode) based on real-time communication performance monitoring. The system continuously adapts to mobile scenarios by modifying sensor configuration in response to detected performance degradation, transforming a static sensor system into a dynamic one that maintains optimal operation during device movement and environmental changes
Solution Approach 2:
The patent changes physical parameters of the image sensor including exposure time, gain settings, and charge readout modes to compensate for performance deterioration. By adjusting these parameters in real-time based on communication conditions, the system maintains reliable performance in mobile scenarios without requiring hardware changes
2Reliability
If a first logic pixel unit is divided into multiple second logic pixel units for separate reading, then signal receiving channels are increased and multi-channel diversity gain is improved, but device complexity increases
Solution Approach 1:
The patent segments a first logic pixel unit into multiple second logic pixel units, where each second logic pixel unit corresponds to one or more physical pixel units. This segmentation enables separate charge reading from each unit, creating multiple signal receiving channels that provide diversity gain and improve communication reliability in mobile scenarios
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 approach enhances communication quality in mobile scenarios by increasing signal receiving channels and improving multi-channel diversity gain, thereby mitigating the effects of reduced communication performance.
Implementation Method 1
an image sensor which simultaneously receives the visible light signals from the plurality of visible light signal transmit devices
Data Source
AI summary
Embodiments of the present application provide a visible light signal receiving and control method, a control apparatus, and a receiving device. The method comprises: determining a communication performance between a visible light signal receiving device and at least one visible light signal transmit device; and in response to a reduction of the communication performance between the visible light signal receiving device and the at least one visible light signal transmit device, using a first logic pixel unit of an image sensor related to the at least one visible light signal transmit device as at least two second logic pixel units for reading separately when reading inductive charges of the image sensor of the visible light signal receiving device. The method, apparatus, and device of the embodiments of the present application are capable of compensating reduction of a communication performance to some extent by changing the charge readout mode of an image sensor of a visible light signal receiving device, and are more suitable for visible light communications in complicated mobile scenarios.