Face-Aware Screen Rotation for Electronic Devices

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Solution Overview

Problem

Conventional electronic devices automatically rotate their screens based on the device's motion, failing to consider the user's angle, leading to inconvenient viewing experiences when the user lies down or changes positions.

Innovation Solution

An electronic device that photographs the user's face in real-time and uses face recognition to adjust the screen orientation according to the user's angle, ensuring the screen is always viewed straight, by classifying the user's face angle into predefined regions and rotating the screen accordingly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If the electronic device rotates the screen based on the device's motion sensing, then the screen rotation is automatically controlled, but the user's viewing angle is not considered leading to inconvenient viewing experience

Engineering Contradiction:

Improveautomatic screen rotationVSAvoidviewing convenience

Core Design Contradiction:

Extent of automationVSEase of operation

Solution Approach 1:

The system captures images of the user's face and uses face recognition technology to detect the user's viewing angle in real-time. This feedback mechanism allows the device to understand the user's actual viewing position and adjust the screen orientation accordingly, resolving the contradiction between automatic control and viewing convenience.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent replaces the traditional mechanical motion sensing system with an optical-based face recognition system. Instead of relying solely on accelerometers and gyroscopes to detect device orientation, the system uses camera-based face detection to determine user viewing angle, enabling more accurate and user-centric screen rotation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Ease of operation

If the electronic device uses face recognition to adjust screen orientation, then the viewing experience is improved, but the device complexity increases

Engineering Contradiction:

Improveviewing convenienceVSAvoidsystem complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The system uses the device's existing camera module for multiple purposes: capturing images for face recognition, determining viewing angle, and potentially other functions. This multi-functionality approach allows the system to implement sophisticated screen rotation control without adding dedicated hardware components, thereby managing device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system creates a digital model of the user's face and viewing angle through image processing and pattern recognition. This virtual representation allows the system to calculate the optimal screen orientation without physical sensors directly measuring the user's head position, reducing hardware complexity while maintaining functionality.

Inventive Principle:

Principle #26Copying

Data Source

PatentUS9671861B2Electronic device for measuring angle of face and rotating screen thereof and method thereof

Publication Date: 2017.06.06 ADEIA MEDIA HOLDINGS INC

AI summary

An electronic device is configured to measure an angle of a user's face and rotate a screen thereof. In a method, the electronic device verifies that a face of a user is included in photographed image information, recognizes the face of the user included in the image information, and rotates a screen of the electronic device according to an angle of the recognized face.