Touch Panel Control Logic for Unintended Input Prevention
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Solution Overview
Problem
Existing electronic devices with both touch panels and other operating members often experience unintended processing when touch operations and operations on other members are simultaneously executed, leading to unanticipated results, such as touch operations being enabled unintentionally after key operations.
Innovation Solution
An electronic device with a touch detection unit, a member operation detection unit, and a control unit that distinguishes between touch and member operations, enabling touch processing only when the touch operation is intentionally resumed after a member operation has ended, by tracking the movement of the touch position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If touch operation is enabled during key operation, then user can perform touch operations without removing touch, but unintended processing is executed when touch is performed without intention
Solution Approach 1:
The system dynamically changes the operational state of the touch panel based on the state of other operating members. When a key operation is detected, the touch panel transitions to a disabled state to prevent unintended interactions. When the key operation ends, the touch panel transitions back to an enabled state, allowing touch operations to resume. This dynamic state management resolves the contradiction by adapting the touch panel's responsiveness to the current operational context.
Solution Approach 2:
The system continuously monitors the state of operating members and uses this feedback to control touch panel availability. When a key operation is detected, the system provides feedback by disabling the touch panel. When the key operation ends, the system provides feedback by re-enabling the touch panel. This feedback mechanism ensures that touch operations are only accepted when appropriate, preventing unintended processing while maintaining operational continuity.
2Reliability
If touch operation is disabled during key operation, then unintended processing is prevented, but user has to newly start touch operation after key operation ends
Solution Approach 1:
The system performs preliminary actions by preserving touch operation state information during key operations. Instead of completely disabling touch functionality, the system maintains awareness of touch states and prepares for resumption. When the key operation ends, the system can quickly restore touch operations without requiring a complete restart, thus reducing time loss while maintaining processing accuracy during the key operation.
3Adaptability or versatility
If both touch panel and operating members are simultaneously responsive, then device functionality is enhanced, but unexpected processing occurs when both are operated together
Solution Approach 1:
The system segments the operational responsiveness of different operating members by introducing a priority hierarchy. When a key operation is detected, the system segments the touch panel's responsiveness by disabling it, while the key operation continues to function. This segmentation allows both operating members to maintain their functionality independently, with the key operation taking precedence, thus preventing unexpected processing while preserving overall device versatility.
Data Source
AI summary
An electronic device includes a touch detection unit that detects a touch operation on a touch panel, a member operation detection unit that detects an operation to an operating member different from the touch panel, and a control unit that controls a first processing executed based on a start of a first touch on the touch panel when the operation is not performed, a second processing not to be executed based on the touch operation of the first touch while the operation is performed if the operation is performed when the first touch is performed, and executes the first processing based on a movement of a touched position of the first touch after the operation is no longer performed.