Control Device Touch Input Timing Mechanism
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Solution Overview
Problem
Existing technologies fail to effectively inhibit unintended inputs on touch screens beyond the duration of an operator's operation, leading to potential unintended actions.
Innovation Solution
A control device with a first switch detecting operations in two directions and a second switch detecting touches on an object, where regular operations based on the second switch are only performed after a set time has passed since the first switch was operated, with the first time being when unintended touches occur 100% and the second time being when intended touches are detected, to differentiate between intended and unintended interactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a touch screen is made responsive to user touches, then user interaction capability is improved, but unintended touches may be detected causing erroneous operations
Solution Approach 1:
The control device performs preliminary action by setting a predetermined time period after detecting operation on the first switch, during which touches on the second switch are invalidated. This proactive timing mechanism prevents unintended touches from being processed before the user can recover their hand or intent, thereby resolving the contradiction between maintaining touch responsiveness and preventing erroneous operations.
2Speed
If the touch screen remains always responsive, then user interaction speed is improved, but unintended inputs outside operator operation intervals cannot be inhibited
Solution Approach 1:
The control device implements periodic action by establishing a time-based validation window that periodically activates after first switch operations. During this window, second switch touches are selectively invalidated, creating a rhythmic pattern of validation that maintains high interaction speed for legitimate inputs while providing periodic protection against unintended inputs, thus resolving the contradiction between speed and reliability.
3Reliability
If a time delay is introduced to prevent unintended touches, then operation accuracy is improved, but response time for legitimate operations may be delayed
Solution Approach 1:
The control device applies local quality by making the time delay selective rather than universal. The predetermined time period only applies to second switch touches occurring after first switch operations, while other touches outside this context remain fully responsive. This localized application of delay minimizes overall time loss while maintaining high accuracy for preventing the specific type of unintended touches that occur after first switch operations.
Data Source
AI summary
A control device comprising a control unit configured to control regular operation based on operation on a first switch detecting operation in two opposing directions and operation on a second switch detecting touch on an object, wherein the control unit performs control such that the regular operation based on operation on the second switch is not performed until a regular time set between first and second times passes after operation on the first switch is detected, wherein the first time is a time in which a cumulative occurrence rate at which unintended touch on the second switch by a user after operation on the first switch occurs becomes 100% in an experiment carried out in advance, and wherein the second time is a time in which an intended touch on the second switch by the user after operation on the first switch is first detected.