Dynamic Privacy Mode Display with Adaptive Backlight Control
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Solution Overview
Problem
Information handling systems lack a dynamic privacy mode that can adaptively control display brightness and viewing angles based on user location, calendar events, and document privacy settings, compromising user privacy in public settings.
Innovation Solution
An information handling system with a processing device that detects privacy mode triggers and sends control signals to a backlight control module to adjust the display's brightness and viewing angles, switching between normal and privacy modes by controlling LEDs and prism configurations, thereby limiting the visibility of the screen to only direct angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the display operates in normal mode with full brightness and wide viewing angles, then visibility and user experience are improved, but user privacy is compromised in public settings
Solution Approach 1:
The display dynamically switches between normal mode and privacy mode based on detected triggers such as location, calendar events, or user input. The backlight control module adjusts brightness and the prism configuration changes viewing angles in real-time, making the privacy feature adaptive rather than static.
Solution Approach 2:
The system changes physical parameters of the display by adjusting backlight brightness levels and modifying prism orientations to alter viewing angles. These parameter changes enable the transition from wide viewing angles in normal mode to restricted viewing angles in privacy mode.
2Object-affected harmful factors
If the display restricts viewing angles to protect privacy, then user privacy is improved, but visibility for legitimate users may be reduced
Solution Approach 1:
The privacy mode restricts light distribution to specific local directions (narrow viewing angles) while maintaining full brightness for users within that restricted cone. This ensures that legitimate users directly in front of the display experience no degradation in visibility while others cannot see the content.
3Object-affected harmful factors
If the display continuously operates in privacy mode, then user privacy is maintained, but energy consumption increases
Solution Approach 1:
The display operates in privacy mode periodically or intermittently based on detected triggers such as location changes, calendar events indicating public settings, or user input. This periodic activation maintains privacy when needed while allowing normal operation during private settings, thereby reducing overall energy consumption compared to continuous privacy mode operation.
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
Enhances user privacy by reducing the visible area of the display in public settings, while also providing power savings and user control over privacy modes through customizable triggers and prompts.
Implementation Method 1
switching between normal and privacy modes by controlling LEDs and prism configurations, thereby limiting the visibility of the screen to only direct angles
Data Source
AI summary
An information handling system includes a processing device and a display. The processing device detects a privacy mode trigger, and provides a privacy mode control signal in response to detecting the privacy mode trigger. The display includes a screen to provide an image, and a backlight control module. The backlight control module controls a brightness of the image based on a display mode of the display, and provides the image in a privacy mode in response to receiving the privacy mode control signal.