Touch Duration Threshold for False Operation Prevention
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Solution Overview
Problem
Existing methods for preventing false operations on touch panels, such as those in electronic devices, fail to distinguish between intended and unintended touch operations, leading to potential usability issues and impaired functionality.
Innovation Solution
An electronic device equipped with a detector and a control unit that differentiates between touch operations based on duration time, allowing functions to be performed only after a predetermined time of touch, thereby preventing false operations without degrading operability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a touch panel operation is simply invalidated to prevent false operations, then false operations are prevented, but usability is impaired
Solution Approach 1:
The patent changes the parameter of touch duration time to distinguish between intentional and unintentional operations. By setting a threshold duration (e.g., 0.5 seconds), the system accepts touches that meet the duration criterion while rejecting shorter spurious touches, thus preventing false operations without impairing usability for legitimate users.
Solution Approach 2:
The patent introduces dynamic timing control where the system transitions from a static invalidation approach to a dynamic duration-based validation approach. The touch acceptance state changes over time based on whether the touch persists beyond the predetermined duration, allowing the system to adapt its response based on the temporal characteristics of the touch input.
2Reliability
If a timer-based input prohibition is used to prevent false operations, then false operations are reduced, but the method cannot distinguish between intended movement operations and false sliding touches
Solution Approach 1:
The patent uses duration time as a discriminating parameter to differentiate between intentional and unintentional touches. By measuring how long a touch persists and comparing it against a threshold, the system can distinguish between deliberate user actions (which typically last longer) and spurious contacts (which are usually brief), thereby improving measurement precision in operation detection.
3Ease of operation
If touch operations with short duration are accepted, then operability is maintained, but false operations occur more frequently
Solution Approach 1:
The patent introduces a duration threshold parameter that filters touch operations based on their temporal characteristics. By setting this parameter appropriately, the system maintains high acceptance rates for legitimate touches while automatically rejecting short-duration spurious touches, thus balancing operability with false operation prevention.
Data Source
AI summary
When a first screen is displayed on a display surface, for a touch operation in which a duration time of a touch on the operation surface is less than a predetermined time, a function corresponding to the touch operation is not performed, and in response to a predetermined touch operation in which the duration time of the touch on the operation surface is at least the predetermined time, a first function corresponding to the predetermined touch operation is performed. When a second screen is displayed on the display surface, a second function is performed in response to a touch operation in which the duration time of the touch on the operation surface is less than the predetermined time.