HMD Display Adaptive Brightness Control
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Solution Overview
Problem
Conventional see-through head-mounted display devices lack adaptive information display modes that adjust dynamically based on user behavior and environmental context, potentially obstructing the user's view or failing to provide timely information updates.
Innovation Solution
A head-mounted display device with a display unit that switches between two display characteristics based on a determined time period, using a CPU to control the display of information with a first characteristic initially and then switching to a second characteristic after a timer limit value is reached, allowing for adaptive brightness adjustments to ensure information is easily visible without obstructing the user's view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display unit displays information with high brightness to ensure visibility, then the information is easily confirmed, but the user's view of the outside world is obstructed
Solution Approach 1:
The display device dynamically adjusts brightness between two levels based on temporal conditions. The controller switches from first brightness (high visibility) to second brightness (reduced obstruction) after a predetermined time period, making the system adaptive rather than static. This resolves the contradiction by applying different brightness levels at different times to satisfy both visibility and view requirements.
Solution Approach 2:
The display operates in periodic cycles: initial high-brightness display phase followed by a time delay, then transitions to reduced-brightness phase. This periodic switching pattern allows the system to provide strong visual information initially while subsequently reducing obstruction, balancing both requirements through time-based periodic operation.
2Loss of information
If the display unit provides continuous information updates, then the information remains current and useful, but the user's field of view becomes increasingly obstructed
Solution Approach 1:
The display adapts its information presentation dynamically by changing brightness levels over time. Important information is displayed with high brightness initially to ensure visibility and prevent information loss, then transitions to lower brightness to reduce obstruction. This temporal dynamic approach maintains information effectiveness while minimizing prolonged view blocking.
Solution Approach 2:
Instead of continuous high-brightness display, the system applies partial action by using high brightness only for a predetermined initial period, then reduces to lower brightness. This partial application of maximum brightness suffices to convey necessary information while avoiding excessive prolonged obstruction of the user's view.
Data Source
AI summary
A display device includes: a determination unit that determines, on the basis of display information, a period of time during which a display unit displays the display information with a first display characteristic; and a controller that controls the display unit to display the display information with the first display characteristic and to display the display information with a second display characteristic when the period of time has elapsed since the display with the first display characteristic was started.