Touch Panel Control Unit Error Suppression via Time Threshold
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Solution Overview
Problem
Existing touch panel control methods either restrict the layout of operation members or incorrectly disable functions due to malfunction detection based on prolonged touches, leading to inefficient use of touch panel area and potential operation errors.
Innovation Solution
An information processing apparatus with a touching detection unit, a time counting unit, and a control unit that differentiates between intentional and unintentional touches by allowing functions to be executed if the touch-up operation occurs within a predetermined time period after a touch-on operation, preventing operation errors without restricting the layout of touch panel members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an operation inhibited area is provided on the touch panel to prevent operation errors, then operation errors are prevented, but the layout freedom of touching operation members is restricted and part of the touch panel area cannot be effectively utilized
Solution Approach 1:
The patent changes the parameter of touch duration by introducing a predetermined time period threshold. The control unit distinguishes between intentional touches (duration less than threshold) and unintentional touches (duration equal to or exceeding threshold), enabling operation error prevention without restricting layout freedom. This parameter-based differentiation allows the entire touch panel area to remain usable while preventing errors from prolonged unintentional contacts.
2Area of stationary object
If the touch panel area is increased to improve visibility, then visibility is improved, but the probability of unintentional touching by the user's hand increases
Solution Approach 1:
The patent introduces a time duration parameter to differentiate between intentional and unintentional touches. By monitoring how long a touch persists, the system can distinguish purposeful user interactions from accidental hand contacts, even on large touch panels. This allows the touch panel to maintain its large area for visibility while filtering out erroneous inputs through temporal analysis.
3Reliability
If a sensor element is disabled after detecting prolonged touching to prevent malfunction, then sensor malfunction is prevented, but the touching operation member cannot be provided at that position and layout is restricted
Solution Approach 1:
Instead of disabling the sensor element after detecting prolonged touch (as in prior art), the patent inverts the approach by continuing to monitor the touch duration and only executing the function if the touch is determined to be intentional (duration less than threshold). This inversion allows the sensor to remain active and the layout to remain flexible while still preventing erroneous operations from unintentional prolonged contacts.
Data Source
AI summary
An information processing apparatus includes a touching detection unit configured to detect a touching operation and a touch-up operation for the display unit, a time counting unit configured to count a time period of continuous touching on a specific area of the display unit, and a control unit configured, when a touch-up operation from the specific area is detected and a counted time period of continuous touching has not reached a predetermined time period, to execute a function assigned to the specific area while when the touch-up operation from the specific area is detected and the counted time period of continuous touching has reached the predetermined time period, not to execute the function assigned to the specific area in relation only to the detected touch-up operation.