Image Sensor Readout Mode for Visible Light Communication
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Solution Overview
Problem
Visible light communications in mobile scenarios face challenges due to changing communication performance caused by device movement and complex transmission environments, leading to inefficiencies in power consumption and signal reception.
Innovation Solution
A method and apparatus that adjust the charge readout mode of an image sensor in a visible light signal receiving device by combining first logic pixel units into second logic pixel units in response to changes in communication performance, improving signal reception and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the image sensor reads all pixel units individually to ensure high signal reception quality, then the communication reliability is improved, but the power consumption increases
Solution Approach 1:
The patent combines multiple first logic pixel units into second logic pixel units for reading, reducing the number of readout operations. Specifically, when communication performance increases, the system merges pixel units that are not currently needed for communication, thereby reducing power consumption while maintaining signal reception quality for active pixel units.
Solution Approach 2:
The patent implements dynamic adjustment of the image sensor readout mode based on real-time communication performance. The control unit determines whether to read all pixel units or combine them based on the current communication state, making the system adaptable to changing conditions and optimizing the balance between reliability and power consumption.
2Use of energy by moving object
If the image sensor reads fewer pixel units to reduce power consumption, then the energy efficiency is improved, but the signal reception quality deteriorates
Solution Approach 1:
The patent applies different readout strategies to different regions of the image sensor. Active pixel units related to current communication are read individually to maintain high signal reception quality, while inactive pixel units are combined to reduce power consumption. This localized differentiation optimizes both reliability and energy efficiency.
Solution Approach 2:
The patent changes the readout mode parameter of the image sensor based on communication performance. When communication performance is high, the system switches to a combined readout mode for inactive pixels; when performance is low, it switches to individual readout mode, thereby adapting power consumption to actual communication needs.
3Adaptability or versatility
If the system dynamically adjusts the readout mode based on communication performance, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The patent implements a feedback mechanism where the control unit continuously monitors communication performance and adjusts the image sensor readout mode accordingly. This closed-loop control enables the system to adapt to changing communication conditions while using relatively simple control logic that only needs to determine whether to read pixels individually or in combination based on performance thresholds.
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 the power efficiency and suitability of visible light communications in complex mobile scenarios by dynamically adjusting the image sensor's readout mode based on changing communication conditions.
Implementation Method 1
an image sensor that 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 an increase in the communication performance between the visible light signal receiving device and the at least one visible light signal transmit device, combining two first logic pixel units of an image sensor related to the at least one visible light signal transmit device as one second logic pixel unit to be read, when reading an inductive charge 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 reducing power consumption of a visible light signal receiving device by changing the charge readout mode of an image sensor of the visible light signal receiving device in response to a change in the communication performance, and are more suitable for visible light communications in complicated mobile scenarios.