Transmissive Display Brightness Control via Ambient Light and Background Color
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Solution Overview
Problem
Existing transmissive display devices, such as head-mounted displays, require manual brightness adjustment by users, which is cumbersome and can lead to operation errors, especially in industrial applications where precise brightness control is necessary to ensure clear visibility of content regardless of background color or environment lighting.
Innovation Solution
A transmissive display device with a brightness adjustment mechanism that automatically adjusts the display area's brightness based on the background color and use environment brightness, using imaging sensors and backlight control to optimize screen brightness for improved content visibility without user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual brightness adjustment is required, then user can control screen brightness, but operation becomes troublesome and causes work errors
Solution Approach 1:
The display device automatically adjusts its own brightness based on detected background color and environment lighting conditions, eliminating the need for manual user intervention. The system serves itself by autonomously determining appropriate brightness levels through integrated sensors and control mechanisms.
Solution Approach 2:
The system incorporates feedback loops where sensors detect background color and environment brightness, the control unit processes this information, and adjusts the display brightness accordingly. This closed-loop feedback ensures optimal brightness adjustment based on real-time environmental conditions.
2Measurement precision
If screen brightness is increased for dark background content, then character visibility improves, but user cannot see external world well
Solution Approach 1:
The display brightness is dynamically adjusted based on the detected background color and environment lighting conditions. The system transitions from static brightness to adaptive brightness, automatically optimizing the balance between content visibility and external world visibility for each viewing scenario.
Solution Approach 2:
The system changes the brightness parameter of the display based on detected environmental parameters (background color and ambient light levels). By adjusting the brightness parameter dynamically according to these conditions, the system optimizes visual comfort and visibility without requiring manual intervention.
3Object-affected harmful factors
If screen brightness is decreased for light background content, then external world visibility improves, but character information becomes harder to see
Solution Approach 1:
The display brightness is dynamically adjusted based on the detected background color and environment lighting conditions. The system transitions from static brightness to adaptive brightness, automatically optimizing the balance between content visibility and external world visibility for each viewing scenario.
Solution Approach 2:
The system changes the brightness parameter of the display based on detected environmental parameters (background color and ambient light levels). By adjusting the brightness parameter dynamically according to these conditions, the system optimizes visual comfort and visibility without requiring manual intervention.
4Ease of operation
If automatic brightness adjustment is implemented, then user workload is reduced, but device complexity increases
Solution Approach 1:
The control unit performs multiple functions including brightness adjustment, background color detection, and environment brightness detection within a single integrated system. By making the control unit multi-functional, the patent reduces the need for separate dedicated components for each function.
Solution Approach 2:
The patent combines the brightness adjustment function with background color detection and environment brightness detection in an integrated control system. By merging these functions into a unified approach, the system achieves automatic brightness control without requiring entirely separate independent systems.
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
The solution ensures constant appropriate screen brightness, reducing user workload and errors, particularly in industrial settings, by automatically adjusting brightness in response to content background color and environment conditions, enhancing visual recognition of characters and images.
Implementation Method 1
an imaging sensor that acquires an image of the display area
Implementation Method 2
a light source (backlight) that irradiates the display part
Data Source
AI summary
A head mounted display device that allows a user to visually recognize a content as a virtual image, includes a display part that displays the content in a predetermined display area, and a control part that determines a background color of the content and use environment brightness and adjusts brightness of the display area in response to the determination results thereof.