Cursor Angle Constraint for UWB Remote Pointing Control
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Solution Overview
Problem
Existing remote control devices for large display screens, such as smart televisions and personal computers, suffer from poor user experience due to out-of-focus issues between the mobile device and the cursor on the screen, requiring frequent recalibration when the device is rotated beyond a certain angle.
Innovation Solution
Implementing ultra-wide band (UWB) base stations on the display screen to determine an angle range within which the mobile device can control the cursor, preventing cursor movement when the device is rotated outside this range, thereby eliminating the need for frequent recalibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the mobile device is rotated beyond a certain angle range, then the user can access different areas of the display screen, but the cursor control becomes out-of-focus and requires recalibration
Solution Approach 1:
The patent implements dynamic angle range adaptation by detecting the display screen's orientation and automatically adjusting the valid rotation angle range accordingly. When the display is in portrait mode, the system allows rotation within a first angle range; when in landscape mode, it switches to a second angle range. This dynamic adjustment ensures the cursor remains accurately controlled across different device orientations without requiring manual recalibration.
Solution Approach 2:
The system continuously monitors the actual rotation angle of the mobile device and compares it against the valid angle range determined by the display orientation. When the rotation angle exceeds the valid range, the system provides feedback by preventing further cursor movement in that direction, thereby maintaining cursor control accuracy and eliminating the out-of-focus problem that would otherwise require recalibration.
2Adaptability or versatility
If frequent recalibration is required to maintain cursor focus, then the mobile device can be used at various angles, but user experience deteriorates due to repeated interruptions
Solution Approach 1:
The system performs preliminary determination of the valid rotation angle range based on the detected display orientation before the user actually rotates the device. By pre-establishing the appropriate angle range (first angle range for portrait mode, second angle range for landscape mode), the system ensures that cursor control remains accurate throughout the entire valid rotation range without requiring any recalibration operations during usage.
Solution Approach 2:
The system automatically detects the display screen orientation and adjusts the rotation angle range without requiring user intervention or manual recalibration. This self-service mechanism eliminates the need for users to repeatedly perform calibration operations, thereby maintaining operation continuity and improving ease of use while preserving angle flexibility.
3Measurement precision
If the cursor is constrained within a limited angle range, then control accuracy is maintained, but the device cannot be rotated freely
Solution Approach 1:
The patent implements a dynamic angle constraint system that adapts the rotation freedom based on the display orientation. In portrait mode, the system constrains rotation to a first angle range centered on the vertical axis; in landscape mode, it allows rotation within a second angle range centered on the horizontal axis. This dynamic approach maximizes rotation freedom within each orientation while maintaining cursor positioning accuracy through angle-based constraints.
Data Source
AI summary
An electronic device, includes one or more processors and a display screen including first, second, third, and fourth edges. The first edge and the second edge are parallel to a first direction, the third edge and the fourth edge are parallel to a second direction perpendicular to the first direction, and a cursor moves on the display screen with a mobile device. A computer program, when executed by the one or more processors, enables the electronic device to, when the cursor moves to the third edge and an intersection point between a straight line pointed to by the mobile device, when a plane on which the display screen is located is not between a straight line on which the third edge lies and a straight line on which the fourth edge lies, control the cursor to no longer move in the first direction with the mobile device.