Turnable Camera Display Control for Vibration-Stable Orientation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing imaging apparatuses with turnable display units face issues in accurately determining the display state due to vibrations, leading to frequent switching between normal and reverse displays, especially during movements or capturing moving images, which can disrupt the user's intended display preference.
Innovation Solution
The imaging apparatus employs a system with first and second acceleration sensors to calculate posture angles of the main body and display unit, incorporates a display switching unit to determine the display state based on these angles, and applies filter processing to reduce vibration-induced errors, using hysteresis regions and adjustable response speeds to maintain the desired display state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If acceleration sensors are mounted on both the main body unit and display unit to calculate posture angles, then the accuracy of display state determination is improved, but the device complexity increases
Solution Approach 1:
The patent divides the acceleration sensing function into two separate sensors: one mounted on the main body unit and another on the display unit. This segmentation allows each sensor to independently measure local acceleration, enabling more precise calculation of the display unit's posture angle relative to the main body, thereby improving display state determination accuracy while distributing the complexity across independent components
Solution Approach 2:
The acceleration sensors serve multiple functions: they detect gravity acceleration for posture calculation, and their data can be used to determine imaging state, display state, and trigger appropriate display switching. This multi-functionality justifies the added complexity by providing versatile control capabilities
2Stability of the object's composition
If filter processing is applied to gravity accelerations to reduce vibration influence, then the stability of display state is improved, but the response speed to legitimate posture changes decreases
Solution Approach 1:
The patent implements dynamic adjustment of the hysteresis region boundary based on the detected imaging state. When the imaging state indicates stable conditions (e.g., stationary camera), the hysteresis region is narrowed to enable faster display switching. When vibration or movement is detected, the hysteresis region is expanded to filter out spurious switching, thus dynamically balancing stability and response speed according to actual usage conditions
Solution Approach 2:
The patent changes the parameter of hysteresis region boundary position based on imaging state detection. By adjusting this parameter dynamically, the system can tolerate larger angle variations during vibration (improving stability) while maintaining rapid response during stable conditions, effectively resolving the contradiction between stability and response speed
3Reliability
If the hysteresis region for display switching is expanded to reduce vibration-induced switching, then the reliability of display state determination is improved, but the sensitivity to legitimate posture changes decreases
Solution Approach 1:
The patent dynamically adjusts the hysteresis region boundary based on imaging state detection. The system monitors whether the camera is in a stationary state or moving state, and accordingly expands or contracts the hysteresis region. This dynamic adjustment maintains high reliability during vibration while preserving sensitivity to legitimate posture changes during stable conditions
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 approach stabilizes the display state by reducing vibration-induced switching, ensuring the display remains consistent with the user's intent, even under varying conditions such as walking or capturing moving images, by accurately calculating posture angles and adjusting hysteresis regions and response speeds.
Implementation Method 1
a first acceleration sensor configured to detect a first gravity acceleration applied to the main body unit, a second acceleration sensor configured to detect a second gravity acceleration applied to the display unit
Data Source
AI summary
An imaging apparatus includes a display unit, a turning unit configured to turnably hold the display unit with respect to the main body unit, a first acceleration sensor configured to detect a first gravity acceleration applied to the main body unit, a second acceleration sensor configured to detect a second gravity acceleration applied to the display unit, an angle calculation unit configured to calculate posture angles of the display unit and the main body unit from the gravity accelerations acquired from the first acceleration sensor and the second acceleration sensor, and a display switching unit configured to switch a display state of the display unit by determining the display state of the display unit based on the posture angles calculated by the angle calculation unit, wherein it is determined whether to switch the display state of the display unit, based on the display state determined by the display switching unit.