Vehicular Input Device Threshold Control for Cursor Movement
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Solution Overview
Problem
Users face difficulty in conveniently moving a selection image, such as a cursor, between linearly disposed objects in vehicular input devices due to unclear recognition of the start of movement and movement amount, leading to unintended selection of next or further objects.
Innovation Solution
A vehicular input device with a position detection unit and electronic control unit that sets a smaller determination threshold for moving to the next object compared to the second next object, and provides visual or auditory feedback to help users recognize movement amounts, ensuring the selection image is conveniently moved to the intended object.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a uniform determination threshold is used for all object movements, then the system is simple to implement, but the user cannot easily recognize the start of movement and may move the cursor to unintended objects
Solution Approach 1:
The patent applies local quality by setting different determination thresholds for different movement distances. Specifically, a first determination threshold is used for movement to the next object, while a second determination threshold is used for movement to the second next object. This localized differentiation allows users to easily control cursor movement to adjacent objects while preventing unintended jumps to distant objects, resolving the contradiction between ease of operation and system complexity.
2Ease of operation
If a small determination threshold is used for all movements, then the cursor moves easily to the next object, but the user may accidentally move to the second next or third next object
Solution Approach 1:
The patent implements local quality by establishing different determination thresholds for different target objects. A smaller first determination threshold enables easy movement to the next object, while a larger second determination threshold prevents accidental selection of the second next object. This localized threshold differentiation simultaneously achieves ease of operation for intended selections and reliability for preventing unintended selections.
Solution Approach 2:
The patent incorporates feedback by providing visual or auditory signals that inform users about the determination threshold status. When the operative input movement approaches the determination threshold, the system provides feedback to help users recognize the movement state, allowing them to adjust their input to achieve precise selection and avoid accidental jumps to incorrect objects.
3Reliability
If a large determination threshold is used for all movements, then unintended selections are reduced, but the user must perform large movement amounts to select the next object
Solution Approach 1:
The patent applies local quality by setting a small first determination threshold for movement to the next object, enabling users to perform small, easy movements for intended selections. A larger second determination threshold is set for movement to the second next object, providing reliability against unintended selections. This localized differentiation resolves the contradiction by optimizing threshold size for each specific selection scenario.
Data Source
AI summary
A vehicular input device includes a position detection unit, a display unit, and an ECU. The ECU is configured to set, based on a movement amount of a position of an operative input, a determination threshold of the movement amount of the operative input used in determination of movement to a next object from a current object to be smaller than a determination threshold of the movement amount of the operative input used in determination of movement to a next second object from the next object. The ECU is configured to display a selection image that indicates selected objects on the display unit on the current object.