Event Camera Reception Control for Optical Wireless Signals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing event cameras used in optical wireless communication systems often have default settings that are not optimally suited for receiving optical signals, leading to inefficiencies and suboptimal performance.
Innovation Solution
A receiving device with an event camera and a controller that dynamically adjusts settings based on a reception determination process and a setting change process to optimize reception of optical wireless communication signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If default settings of the event camera are used, then the device is simple and easy to operate, but the receiving sensitivity and signal-to-noise ratio are insufficient for optical wireless communication
Solution Approach 1:
The patent implements dynamic adjustment of event camera settings based on real-time detection of optical wireless communication signals. The controller automatically modifies camera parameters such as exposure time and gain when communication signals are detected, transitioning from static default settings to adaptive dynamic settings that optimize receiving sensitivity for the specific application scenario.
Solution Approach 2:
The system employs self-service through automatic setting adjustment. The controller autonomously detects the presence of optical wireless communication signals and independently modifies the event camera settings without requiring manual intervention. This self-adjusting mechanism resolves the contradiction by maintaining operational simplicity while achieving optimized receiving performance through automated adaptation.
2Measurement precision
If event camera settings are optimized for optical wireless communication, then signal reception accuracy improves, but processing load increases
Solution Approach 1:
The patent applies partial action by implementing setting optimization only when and where needed - specifically when optical wireless communication signals are detected. Rather than continuously optimizing settings or processing all data at maximum precision, the system selectively adjusts parameters during communication events, reducing overall processing load while maintaining high signal reception accuracy during critical communication periods.
Solution Approach 2:
The system dynamically changes camera parameters such as exposure time, gain, and threshold settings based on the detection state. By adjusting these parameters only during active communication detection rather than maintaining fixed high-precision settings continuously, the system achieves high measurement precision when needed while minimizing processing load during non-communication periods.
3Reliability
If the event camera operates with high sensitivity settings, then signal detection capability improves, but noise detection increases
Solution Approach 1:
The patent implements dynamic sensitivity adjustment where the event camera operates with high sensitivity settings only during detected optical wireless communication events. During normal operation, the camera maintains lower sensitivity to minimize noise. This dynamic adaptation allows the system to achieve high signal detection capability during communication while reducing noise interference during non-communication periods.
Solution Approach 2:
The system employs periodic detection and adjustment cycles, where the controller continuously monitors for optical wireless communication signals and adjusts camera sensitivity accordingly. This periodic action creates alternating phases of high-sensitivity signal detection and lower-sensitivity noise reduction, effectively managing the trade-off between signal detection capability and noise levels through time-based modulation of sensitivity settings.
Data Source
AI summary
A receiving device includes an event camera, and a controller configured to receive an optical wireless communication signal through the event camera and to dynamically change settings of the event camera. The controller is further configured to execute a reception determination process to detect or predict reception of the optical wireless communication signal, and a setting change process to automatically change the settings of the event camera to first settings, when the reception of the optical wireless communication signal is detected or predicted.