Dynamic Pressure Threshold Control for Touch Input
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Solution Overview
Problem
Existing touch panel devices often initiate unintended processing when an operator lightly touches the touch sensor, leading to undesired operations and increased operator burden due to the need to apply consistent pressure for each operation.
Innovation Solution
An electronic device with a contact detection unit, pressure detection unit, and control unit that performs predetermined processing only when pressure data meets a predetermined standard, allowing for reduced pressure requirements for subsequent operations within a specified time frame, and optionally providing tactile feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pressure detection is required for each operation to prevent unintended processing, then reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The system performs preliminary action by setting a pressure standard for the first operation to ensure reliability, then automatically lowers the pressure requirement for subsequent operations within the same time period, reducing operator burden while maintaining prevention of unintended processing
Solution Approach 2:
The pressure standard is made dynamic rather than static - it adjusts automatically based on operation history. The control unit changes the pressure standard from a fixed high value to a lower value after detecting consecutive operations, allowing the system to adapt to the operational context and reduce burden while maintaining reliability
2Reliability
If a fixed high pressure standard is required for each operation, then reliability is improved, but productivity deteriorates
Solution Approach 1:
The pressure standard dynamically adjusts based on the operation sequence. For the first operation, a high standard ensures accuracy, but for subsequent operations within the same time period, the standard is lowered, enabling faster operations without sacrificing the accuracy of the initial detection
Solution Approach 2:
The system performs the accurate high-pressure detection as a preliminary action for the first operation, then transitions to a faster, lower-pressure mode for subsequent operations, effectively separating the accuracy-critical initial detection from the speed-critical repeated operations
Data Source
AI summary
Provided is an electronic device including a contact detection unit 16 configured to detect a contact made by a contacting object, a pressure detection unit 13 configured to detect pressure applied to the contact detection unit 16, and a control unit 11 configured to perform control so that predetermined processing is carried out when data based on the pressure detected by the pressure detection unit 13 satisfies a predetermined standard. When the contact detection unit 16 detects another contact within a predetermined time period after the predetermined processing has been carried out, the control unit 11 performs control so that the predetermined processing is carried out when the data based on the pressure satisfies a lower standard than the predetermined standard.