Body-Worn Camera Display Brightness With Ambient-Light Feedback
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Solution Overview
Problem
Existing recording devices struggle with adjusting display brightness effectively in varying ambient light conditions, leading to readability issues and potential distraction or power inefficiency, particularly in body-worn cameras.
Innovation Solution
The recording device incorporates multiple displays oriented in different directions, with one display providing non-video information and the other oriented away from the user, allowing for adaptive brightness adjustment based on ambient light levels detected by an ambient light sensor, independent of the recording state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If display brightness is increased to improve readability in dark environments, then readability is improved, but power consumption increases and distraction to the user increases
Solution Approach 1:
The display brightness is dynamically adjusted based on ambient light conditions detected by the ambient light sensor. The system transitions from static brightness settings to adaptive brightness that automatically responds to environmental changes, resolving the contradiction between readability and power consumption by only increasing brightness when necessary in dark environments.
Solution Approach 2:
The ambient light sensor provides feedback about environmental lighting conditions to the processor, which then adjusts display brightness accordingly. This closed-loop feedback mechanism ensures the display operates at optimal brightness levels matching ambient conditions, reducing unnecessary power consumption while maintaining readability when needed.
2Illumination intensity
If display brightness is increased to improve readability in dark environments, then readability is improved, but distraction to the user increases
Solution Approach 1:
The display brightness dynamically adapts to ambient light conditions, increasing only when the ambient light sensor detects dark environments. This dynamic adjustment prevents unnecessary brightness increases during normal lighting conditions, thereby reducing distraction to the user while maintaining readability when actually needed in dark settings.
3Illumination intensity
If display brightness is continuously high to ensure readability, then readability is maintained, but power inefficiency increases
Solution Approach 1:
The display brightness parameter is changed based on ambient light conditions detected by the sensor. The system adjusts the brightness parameter dynamically rather than maintaining a constant high setting, thereby eliminating power inefficiency associated with continuously high brightness while ensuring readability is maintained when ambient lighting is low.
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 solution enhances readability and reduces distraction by optimizing display brightness according to ambient light conditions, while conserving power and maintaining focus on the incident, particularly suitable for body-worn cameras.
Implementation Method 1
an ambient light sensor, independent of the recording state
Data Source
AI summary
A recording device automatically adjusts a brightness of a display integrated with the recording device. The recording device may be a body-worn camera. The display may comprise one or more light-emitting diodes. The brightness may be adjusted in accordance with an ambient lighting environment in which the recording device is located. The display may be oriented in a direction away from a user on which the recording device is mounted. The brightness may be adjusted for multiple displays integrated with the recording device. The display may be oriented in a different direction in which the ambient lighting environment is detected by an ambient light sensor integrated with the recording device.