Retractable Vehicle Display Control for View and Power Efficiency
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Solution Overview
Problem
Large vehicle display devices obstruct the driver's view and cause unnecessary power consumption by displaying information on the entire screen, regardless of the content category, leading to inefficiencies in both visibility and power usage.
Innovation Solution
A display device with a movable display unit and controller that adjusts the exposed screen area based on the type of information displayed, using a screen control signal with active and inactive periods to control horizontal pixel lines, allowing partial or full withdrawal of the display unit and optimizing power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the display size is increased to show more information, then the information display capability is improved, but the driver's view is blocked
Solution Approach 1:
The display unit is made movable rather than fixed, allowing it to be extended or retracted based on the type of information that needs to be displayed. This dynamic adjustment enables the display area to change according to operational needs, providing large screens when necessary and minimizing obstruction when the display is not needed.
Solution Approach 2:
The display control is segmented into different modes (first mode and second mode) that control different exposure regions. In the first mode, the entire display area is exposed for comprehensive information display, while in the second mode, only a partial region is exposed to reduce obstruction, allowing the system to divide the display functionality into context-dependent segments.
2Area of stationary object
If the display size is increased to show more information, then the information display capability is improved, but unnecessary power consumption increases
Solution Approach 1:
Instead of controlling the entire display uniformly, the system applies different quality states to different regions of the display. In the second mode, only the necessary partial region is activated with full power, while the remaining regions are deactivated or placed in a low-power state, creating local quality differences that optimize energy consumption based on actual display needs.
Solution Approach 2:
The system applies partial action by activating only the necessary portion of the display rather than the entire screen. When operating in the second mode, only the required region is powered and displayed, avoiding the excessive energy consumption that would result from activating the full display area when less information is needed.
3Adaptability or versatility
If the entire screen is used for all content types, then the display versatility is improved, but power efficiency deteriorates
Solution Approach 1:
The display system dynamically adapts its exposure region based on the content type being displayed. The controller switches between first mode (full display exposure) and second mode (partial display exposure) according to the information category, making the display behavior dynamic and context-dependent rather than static and uniform.
Solution Approach 2:
The system changes the exposure region parameter of the display based on the content type. By adjusting the exposure region between a first region (full screen) and a second region (partial screen), the system optimizes the balance between display versatility and power efficiency, using full-screen mode only when comprehensive information display is required.
Data Source
AI summary
A display device and a control method therefor. The display device includes a casing having an opening, a display unit configured to be inserted into or withdrawn from the casing through the opening, a display mover connected to the display unit and configured to move the display unit, and a controller configured to transfer a signal to the display mover and the display unit. The display unit moves according to a mode so that an area exposed to an outside of the casing differs according to the mode.