Separate Magnetic Sensors for Display Rotation and Opening Detection
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Solution Overview
Problem
Existing electronic apparatuses with movable display units face challenges in separately detecting the opening/closing and rotation states, leading to inappropriate image display on the display panel due to shared magnetic sensors affecting each other's detection.
Innovation Solution
The apparatus includes a magnetic field generating unit, an opening/closing detecting unit, and a rotation detecting unit, arranged to detect magnetic fields separately for opening/closing and rotation states, allowing the control unit to display suitable images based on distinct detection results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If both the opening/closing sensor and rotation sensor detect magnetic flux density from the same magnet, then device complexity is reduced, but measurement precision deteriorates due to mutual interference between sensors
Solution Approach 1:
The patent divides the single magnet into two separate magnets: a first magnet for opening/closing detection and a second magnet for rotation detection. This segmentation allows each sensor to detect magnetic flux density from its dedicated magnet without interference, resolving the measurement precision issue while maintaining relatively simple device complexity through the use of only two magnets.
Solution Approach 2:
The patent extracts the detection functions by providing separate magnets for each detection purpose. The first magnet is specifically positioned and configured for opening/closing state detection, while the second magnet is dedicated to rotation state detection. This extraction eliminates the mutual interference problem that occurs when a single magnet serves both detection purposes.
2Volume of moving object
If a single magnet is used for both opening/closing and rotation detection, then space is saved, but reliability deteriorates due to cross-interference between detection functions
Solution Approach 1:
The patent segments the magnetic field generation function into two separate magnets with distinct spatial arrangements. The first magnet is arranged to primarily influence the opening/closing sensor, while the second magnet is arranged to primarily influence the rotation sensor. This segmentation improves reliability by eliminating cross-interference while maintaining compact space utilization through optimized positioning.
Solution Approach 2:
The patent applies local quality by creating localized magnetic fields for each detection function. Each magnet generates a magnetic field that is optimally positioned for its specific detection purpose, with the first magnet's field concentrated for opening/closing detection and the second magnet's field concentrated for rotation detection. This localized approach ensures reliable detection while saving space compared to using completely separate detection systems.
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 complete separation of opening/closing and rotation detection, ensuring images displayed are suitable for the respective states of the display unit, improving image display accuracy and user experience.
Implementation Method 1
a magnetic field generating unit; an opening/closing detecting unit configured to be used to detect opening and closing of the display unit; a rotation detecting unit configured to detect rotation of the display unit
Data Source
AI summary
An electronic apparatus which independently detects opening/closing and rotation of a display unit, and displays an image suitable for an opened/closed and rotated state of the display unit. The opening/closing sensor, the rotation sensor, and a magnet are arranged so that: when the display unit is closed with respect to an apparatus main body with the display panel facing a rear of the apparatus main body, both sensors detect a positive magnetic field; when the display unit is opened, an opening/closing detection result is switched not to detect the magnetic field in a range of an opening/closing angle from 90° to 175°, and the rotation sensor detects the magnetic field; and when the display unit is rotated, the opening/closing sensor does not detect the magnetic field, and a rotation detection result is switched to detect the magnetic field in a range of a rotating angle from 90° to 180°.