Control Circuitry for Touch Panel Pressing Detection
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Solution Overview
Problem
Conventional operation devices require a dedicated installation space for load detection units, making their configuration complex and less simple, due to the use of strain gauges on exposed connection members.
Innovation Solution
A control device with a position detector and a first vibrating element that generates vibration in the top panel, utilizing a processor, capacitor, and differential amplifier to detect pressing operations without the need for external load detection units, allowing for a simpler configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a strain gauge is used as a load detection unit on an exposed connection member, then pressing operations can be detected, but the device configuration becomes complex and requires dedicated installation space on the outer surface
Solution Approach 1:
The patent merges the load detection function with the existing connection member between the operation unit and housing. Instead of using a separate strain gauge on an exposed connection member, the invention integrates the detection function into the connection member itself, eliminating the need for dedicated installation space and simplifying the overall device configuration while maintaining pressing operation detection capability
Solution Approach 2:
The connection member is designed to serve multiple functions: it provides structural connection between the operation unit and housing, and simultaneously functions as the load detection unit. This multi-functionality eliminates the need for separate dedicated detection components and their associated installation spaces, thereby simplifying the device configuration
2Measurement precision
If a strain gauge is used as a load detection unit, then pressing operations can be detected, but a dedicated installation space is necessary on the outer surface
Solution Approach 1:
The invention combines the load detection function with the existing connection member, eliminating the need for separate dedicated installation space on the outer surface. The detection function is integrated into the connection member that is already part of the device structure, thereby reducing the required area without compromising detection capability
3Measurement precision
If a load detection unit is provided on the connection member, then pressing operations can be detected, but the configuration of the operation device becomes complex
Solution Approach 1:
The invention merges the load detection function with the existing connection member structure. Instead of adding a separate load detection unit that would increase configuration complexity, the detection function is integrated into the connection member itself, simplifying the overall device configuration while maintaining detection capability
Solution Approach 2:
The connection member is designed to serve multiple functions: structural connection and load detection. This multi-functionality eliminates the need for separate dedicated detection components, thereby simplifying the device configuration and reducing the number of parts required
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 the detection of pressing operations on a touch panel with a simpler device configuration, providing tactile feedback through vibration while maintaining operational efficiency.
Implementation Method 1
a first vibrating element that generates vibration in the top panel
Implementation Method 2
a first capacitor inserted in series between the first vibrating element and the first processor; and a first differential amplifier that detects a first voltage of the first capacitor or the first vibrating element
Data Source
AI summary
A control device that controls an electronic device including a top panel having an operation surface, a position detector that detects a position of operational input performed on the operation surface, and a first vibrating element that generates vibration in the top panel, the control device includes a first processor that outputs a first drive signal to the first vibrating element to drive the first vibrating element; a first capacitor inserted in series between the first vibrating element and the first processor; and a first differential amplifier that detects a first voltage of the first capacitor or the first vibrating element, wherein the first processor is configured to determine whether pressing operation to the top panel has been performed based on the first voltage detected by the first differential amplifier.