Touch Panel Sensitivity Control via Hall Sensor Position Detection
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Solution Overview
Problem
Existing electronic and imaging apparatuses with touch panel display units face erroneous detection issues when the touch panel is closed, due to electrical characteristics of components in the apparatus main body, leading to unintended focus area settings or other operational errors.
Innovation Solution
Incorporating a sensor system with a magnet and hall element to detect the touch panel's position and a blocking circuit that restricts sensitivity when the touch panel is within a closed range, ensuring accurate detection only when the panel is in an open position, thereby preventing erroneous inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the touch panel display unit is closed with respect to the apparatus main body, then the apparatus can be compact and portable, but erroneous detection occurs due to electrical characteristics of components in the apparatus main body
Solution Approach 1:
A sensor system comprising a magnet attached to the touch panel display unit and a hall element arranged in the apparatus main body is introduced as an intermediary detection mechanism. The sensor detects the position of the touch panel display unit through magnetic field interaction, providing accurate position information without direct electrical contact that causes erroneous detection. This intermediary system resolves the contradiction by enabling reliable detection while maintaining apparatus compactness.
Solution Approach 2:
The patent replaces traditional electrical contact-based detection mechanisms with a magnetic field-based detection system. By using a magnet and hall element combination, the system substitutes mechanical/electrical contact with non-contact magnetic field sensing, eliminating erroneous detection caused by electrical characteristics of components while maintaining the ability to detect touch panel position in the closed state.
2Reliability
If the touch panel sensitivity is restricted when closed, then erroneous detection is prevented, but the touch panel cannot respond to user inputs in the closed position
Solution Approach 1:
The touch panel display unit is designed with dynamic sensitivity control based on its position. The sensor detects the opening/closing state and dynamically adjusts touch panel sensitivity: high sensitivity when open for normal operation, and restricted sensitivity when closed to prevent erroneous detection. This dynamic adjustment resolves the contradiction by adapting responsiveness to the current operational state.
Solution Approach 2:
The patent changes the sensitivity parameter of the touch panel based on the detected position of the display unit. When the sensor detects that the touch panel display unit is in the closed position, the sensitivity parameter is adjusted to a restricted state to prevent erroneous detection. When open, the sensitivity returns to normal levels, allowing full user interaction. This parameter change resolves the contradiction between detection accuracy and operational responsiveness.
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
The solution effectively prevents erroneous detection and operational errors by ensuring the touch panel's sensitivity is restricted when closed, maintaining accurate user inputs and preventing unintended focus area settings.
Implementation Method 1
a sensor system with a magnet and hall element to detect the touch panel's position
Data Source
AI summary
An electronic apparatus and an operation method of an electronic apparatus that can avoid erroneous detection of a touch panel in a case where a touch panel display unit is closed with respect to a specific surface are provided. An electronic apparatus includes a touch panel display unit that includes a touch panel and is opened and closed with respect to a specific surface of an electronic apparatus main body by rotating in a direction of separating the touch panel from the specific surface and a direction of bringing the touch panel close to the specific surface, and restricts a sensitivity of the touch panel in a case where the touch panel display unit is positioned in the range on the side opposite to the specific surface with respect to the first position in a rotation range of the touch panel display unit.