Radar-Based Screen Field-of-View Adjustment for Privacy
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Solution Overview
Problem
Existing electronic devices lack effective solutions to automatically detect potential snooping and adjust the field of view to protect privacy in public settings, as passive privacy filters are inflexible and unsuitable for daily use.
Innovation Solution
An electronic device uses a radar apparatus to detect a target object, determine if it's a person, and adjust the screen's field of view based on distance and angle thresholds to prevent unauthorized viewing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed privacy filter is applied to the screen, then privacy protection is improved, but device flexibility and user experience deteriorate
Solution Approach 1:
The patent implements dynamic field of view adjustment by detecting the presence and position of other users, then automatically modifying the display's viewing angle and range in real-time. This replaces static privacy filters with a dynamic system that adapts the screen's optical properties based on environmental conditions, maintaining privacy protection while preserving device flexibility and user experience.
2Reliability
If the field of view is reduced to protect privacy, then unauthorized viewing is prevented, but viewing quality for legitimate users deteriorates
Solution Approach 1:
The system applies different viewing quality characteristics to different spatial regions. The high-quality viewing experience is concentrated in the user's personal space (directly in front of the device), while restricted regions (where other users are detected) receive reduced or no signal. This creates a spatially differentiated quality distribution that protects privacy without degrading the legitimate user's viewing experience.
Solution Approach 2:
The system performs preliminary detection of other users' presence and position before adjusting the field of view. By detecting potential privacy threats in advance and proactively adjusting the display parameters, the system prevents unauthorized viewing while maintaining optimal viewing conditions for the legitimate user, rather than degrading quality reactively.
3Ease of operation
If manual adjustment of privacy settings is required, then user control is improved, but ease of operation deteriorates
Solution Approach 1:
The system performs automatic privacy protection by autonomously detecting other users and adjusting the field of view without requiring manual user intervention. The device monitors its environment continuously and self-adjusts display parameters based on detected conditions, eliminating the need for users to manually configure privacy settings while maintaining effective privacy protection.
Solution Approach 2:
The system implements continuous feedback loops where the detected presence and position of other users feeds back to the display control system, which then adjusts the field of view parameters accordingly. This closed-loop control automatically adapts privacy settings based on real-time environmental conditions, providing user control through intelligent automation rather than manual adjustment.
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
Automatically detects potential snooping and seamlessly adapts the screen's field of view to prevent unauthorized viewing, enhancing privacy protection in public settings.
Implementation Method 1
detecting a target object within a detection range by using a radar apparatus of an electronic device
Data Source
AI summary
In an illustrative embodiment, a method for adjusting a field of view of a screen of an electronic device is provided. The method includes detecting a target object within a detection range by using a radar apparatus of the electronic device. The method further includes determining whether the target object is a person by using a biometric signal in a detection signal emitted by the radar apparatus in response to detecting the target object; and determining a distance and an angle of the target object relative to the electronic device by using an azimuth signal in the detection signal in response to the target object being a person. The method further includes adjusting the field of view of the screen of the electronic device according to a visual mode of the electronic device based on the distance, a distance threshold, the angle, and a plurality of angle thresholds.