Rotatable Display Switching Control for Image Pickup Apparatus
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Solution Overview
Problem
Existing image pickup apparatuses with rotatable display devices face issues where the display on the rear surface device turns off unexpectedly when it enters the detection range of an object detection sensor during rotation, particularly when used for selfie shooting or other angled positions.
Innovation Solution
Incorporating a controller that manages two display devices, a rear-facing display and an electronic view finder, with sensors to detect the use position of the eyepiece and object proximity, allowing controlled switching between display devices based on these detections to prevent unintended display shutdowns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a detection sensor is provided to detect approaching objects for automatic display switching, then the convenience of operation is improved, but the reliability deteriorates because the display may turn off unexpectedly when the rotatable display device enters the sensor's detection range during rotation
Solution Approach 1:
The patent applies local quality by assigning different functional zones to different sensors. The first sensor (proximity sensor) is positioned to detect objects approaching the electronic viewfinder, while the second sensor (rotation angle sensor) monitors the rotation angle of the display device. Each sensor operates in its specific local zone, and the controller integrates information from both sensors to make display switching decisions, thereby avoiding false triggering during rotation.
Solution Approach 2:
The patent implements feedback control by continuously monitoring both the proximity detection signal from the first sensor and the rotation angle signal from the second sensor. The controller processes these feedback signals in real-time and adjusts display switching accordingly. When rotation is detected, the controller modifies the response to proximity detection to prevent unintended display shutdown, creating a closed-loop control system that ensures reliable operation.
2Adaptability or versatility
If a rotatable display device is provided to enable flexible shooting positions including selfie shooting, then the adaptability is improved, but the reliability deteriorates because the display may be unexpectedly shut off during rotation when entering the detection range of the object detection sensor
Solution Approach 1:
The patent applies dynamics by making the display switching behavior adaptive to the rotation state. The system dynamically adjusts its operation mode based on the rotation angle detected by the second sensor. When the display device is in a rotated position (indicating selfie or flexible shooting mode), the controller modifies the display switching logic to prevent automatic shutdown triggered by the first sensor, thereby maintaining display stability across different operational states.
Solution Approach 2:
The patent applies local quality by creating functionally distinct detection zones for the two sensors. The first sensor's detection range is localized to the electronic viewfinder area, while the second sensor is positioned to detect rotation angles. By differentiating between these local zones and their respective functions, the system can distinguish between intentional object approach (for EVF activation) and rotational movement (for display repositioning), preventing false display shutdown during rotation.
3Ease of operation
If automatic display switching control based on object detection is implemented, then the ease of operation is improved, but the device complexity increases due to the need for multiple sensors and coordinated control logic
Solution Approach 1:
The patent applies universality by designing the controller to handle multiple functions through a single integrated control unit. The same controller that manages display switching based on proximity detection also processes rotation angle information and coordinates the responses of both sensors. This multi-functional approach consolidates control logic rather than requiring separate control circuits for each sensor, thereby reducing overall system complexity while maintaining automatic switching capability.
Solution Approach 2:
The patent merges the control functions for proximity-based display switching and rotation-based display management into a single integrated control system. By combining the processing of signals from the first sensor (proximity detection) and the second sensor (rotation angle detection) within one controller, the patent reduces the number of separate control units needed, simplifies the overall system architecture, and enables coordinated decision-making that prevents conflicting operations.
Data Source
AI summary
An image pickup apparatus that is capable of switching a display device that is used to display appropriately. A first display device at a rear face of a body of the apparatus and is rotatable upward around a first rotation axis. A second display device has an eyepiece and is movable between a housing position and a use position. A first sensor detects whether the eyepiece is in the use position. A second sensor detects approaching of an object to the eyepiece. A controller controls the first and second display devices based on detection results of the first and second sensors. The controller enables predetermined control set in association with the detection result of the second sensor when the first sensor detects that the eyepiece is in the use position and disables the predetermined control when the first sensor detects that the eyepiece is not in the use position.