Mobile Terminal Display Orientation Lock Mechanism
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Solution Overview
Problem
Mobile terminal devices often switch display orientations undesirably when a user lies down with the device, making it difficult for the user to view the screen, as existing systems rely solely on gravity-based detection without user intervention to lock the orientation.
Innovation Solution
Incorporating a display control module and detection module that use an acceleration sensor to monitor the device's posture and allow users to set a lock mode, preventing unintended display direction changes by setting a suppression condition based on user-defined criteria.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the display direction is automatically switched according to device posture detected by acceleration sensor, then the convenience for normal viewing is improved, but the screen becomes unreadable when user lies down with the device
Solution Approach 1:
The patent changes the parameter of display orientation by introducing a lock mechanism that fixes the display direction parameter. When lock mode is enabled, the display direction parameter is prevented from changing even when posture detection indicates a rotation should occur, thus resolving the contradiction between automatic adaptation and readability preservation
Solution Approach 2:
The system uses feedback from acceleration sensor detection to determine when to apply suppression control. The detection module continuously monitors device posture and provides feedback to the display control module, which then decides whether to switch display direction based on the current lock state, creating a feedback loop that balances automatic adaptation with user-controlled stability
2Reliability
If suppression control is implemented to prevent display direction switching, then screen readability is maintained, but the system requires additional control mechanisms
Solution Approach 1:
The patent merges the suppression control function with the existing display control module. The display control module is enhanced to include both normal operation mode and suppression control mode, combining multiple functions into a single integrated module rather than adding separate independent systems, thus reducing overall device complexity
Solution Approach 2:
The display control module is designed with multi-functionality, serving both as the primary display controller and as the suppression control mechanism. The same module that controls display direction also manages the lock state and suppression logic, making the system more versatile while minimizing the number of separate components needed
3Adaptability or versatility
If the display direction switches with posture changes, then the device adapts to different orientations, but frequent adjustments are required when user position changes
Solution Approach 1:
The patent applies preliminary action by enabling users to set the lock mode in advance before posture changes occur. Once lock mode is activated, the display direction is pre-fixed and will not switch automatically, eliminating the need for subsequent manual adjustments when the user changes position or lies down
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
This solution ensures that the display orientation remains consistent with user preference, enhancing usability by eliminating the need for frequent adjustments and reducing user effort in maintaining a readable screen orientation.
Implementation Method 1
a detection module which detects a posture of the mobile terminal device based on a gravity acceleration applied to the mobile terminal device
Data Source
AI summary
A mobile terminal device includes: a display; a display control module which displays an execution screen for an application program on the display; and a detection module which detects a posture of the mobile terminal device based on a gravity acceleration applied to the mobile terminal device. In this arrangement, the display control module controls a display direction of the execution screen with respect to the mobile terminal device according to the posture of the mobile terminal device, and performs suppression control so as to, even if the posture of the mobile terminal device is changed, suppress switching of the display direction corresponding to the changed posture, provided that a suppression condition for suppressing switching of the display direction is satisfied while the execution screen is displayed on the display.