Tiltmeter-Based Automatic Screen Rotation for Tablets
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Solution Overview
Problem
Existing tablet personal computers require users to manually press a rotation button to change the screen direction, which can be inconvenient and may not adapt to the user's intended viewing orientation.
Innovation Solution
Incorporating a tiltmeter and a display direction determining circuit that uses acceleration sensors to measure tilt angles and automatically change the screen direction based on user intent, eliminating the need for manual button presses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a rotation button is placed at the edge of the display periphery to change screen direction, then the screen direction can be adjusted manually, but the operation becomes inconvenient and does not adapt to user's intended viewing orientation
Solution Approach 1:
The system uses the tiltmeter to automatically detect the user's intended viewing orientation and changes the screen direction without requiring manual button operation. The device serves itself by interpreting tilt angle data and autonomously adjusting the display orientation to match user posture and viewing preferences.
Solution Approach 2:
The mechanical rotation button system is replaced with an automated system using a tiltmeter and control circuitry. The tiltmeter detects gravitational acceleration components to determine device orientation, and the control system automatically adjusts screen direction based on these measurements, eliminating the need for mechanical button interaction.
2Device complexity
If manual button pressing is required to change screen direction, then device complexity is reduced, but user convenience and operational ease deteriorate
Solution Approach 1:
The system automatically detects tilt angles using the tiltmeter and changes screen direction without requiring manual button operation. The device monitors its own orientation state and autonomously adjusts the display to match user intent, eliminating the need for separate control buttons.
Solution Approach 2:
The tiltmeter, originally designed for other purposes, is utilized to detect screen orientation and trigger direction changes. This multi-functional use of the tiltmeter eliminates the need for dedicated rotation buttons while maintaining the ability to adjust screen direction.
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
Enables seamless and user-friendly screen direction adjustments without the need for manual button operation, allowing the screen to be oriented optimally based on the user's posture and viewing preferences.
Implementation Method 1
a tiltmeter measures a first tilt angle of a first axis of a display screen of the portable electronic device with respect to a horizontal plane, and measures a second tilt angle of a second axis of the display screen of the portable electronic device with respect to the horizontal plane
Data Source
AI summary
A portable electronic device having a display screen capable of changing display directions is disclosed. The portable electronic device, such as a tablet personal computer, includes a tiltmeter, a display direction determining circuit and a display direction changing circuit. The tiltmeter measures a first tilt angle of a first axis of a display screen of the portable electronic device with respect to a horizontal plane, and measures a second tilt angle of a second axis of the display screen of the portable electronic device with respect to the horizontal plane. The display direction determining circuit determines whether or not a display direction of the display screen is to be changed based on the changing conditions generated by the first tilt angle and the second tilt angle as measured by the tiltmeter. The display direction changing circuit changes the display direction of the display screen from a current display direction to a different display direction according to a determination result formed by the display direction determining circuit.