Cursor Coordinate Controller for Intuitive Touch Pad Selection
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Solution Overview
Problem
Existing display control devices require adjustment of the touch pad operation position or amount to match the cursor position with selection items, making it difficult for drivers to intuitively select items during vehicle travel, especially when multiple items are close or layout is complex.
Innovation Solution
A display control device that acquires operation information from a touch pad, including position and direction, to automatically select the closest selection item based on positional relationships, reducing the need for precise operation amount adjustments and minimizing 'cursor jumping' across display areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the touch pad operation position or amount is adjusted to match the cursor position with selection items, then the selection accuracy is improved, but the ease of operation deteriorates during vehicle travel
Solution Approach 1:
The system automatically determines the operation direction from touch pad operations and autonomously selects the closest selection item in that direction, eliminating the need for the driver to manually adjust operation position or amount. The system serves itself by interpreting the driver's intuitive directional input and completing the selection automatically.
Solution Approach 2:
The system changes the operational parameters from requiring precise position and amount control to accepting directional input only. By transforming the operation mode from absolute coordinate control to direction-based relative control, the system adapts to the driving context where precise manual control is difficult.
2Measurement precision
If the cursor position is precisely controlled to match selection items, then the selection accuracy is improved, but the device complexity increases due to coordinate system synchronization requirements
Solution Approach 1:
The system extracts and utilizes only the directional component from touch pad operations, discarding the need for complex coordinate system synchronization. By focusing solely on operation direction rather than absolute position mapping, the system simplifies the control mechanism while maintaining selection accuracy.
Solution Approach 2:
Instead of mapping touch pad coordinates to display coordinates through complex synchronization, the system inverts the approach by using the operation direction from the touch pad to directly determine cursor movement direction on the display, bypassing the need for coordinate transformation.
3Adaptability or versatility
If the cursor moves across display areas to reach selection items, then the selection capability is improved, but cursor jumping occurs reducing stability
Solution Approach 1:
The system incorporates feedback by detecting whether the cursor is positioned over a selection item and automatically adjusting the cursor position to the nearest item in the operation direction. This feedback mechanism prevents cursor jumping by ensuring the cursor always lands on a valid selection target.
Solution Approach 2:
The system performs preliminary action by pre-determining the closest selection item in the operation direction before finalizing the cursor position. This anticipatory selection prevents unstable cursor jumping by establishing the target position in advance based on the operation direction.
Data Source
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AI summary
A display control device (200) includes an operation information acquisition unit (210) and a cursor coordinate controller (220). The cursor coordinate controller (20) is configured to, in a state in which a cursor is set to a predetermined selection item, when operation information is acquired from the operation information acquisition unit (210), and when, based on a position of the cursor on a display surface of a display device (300), the selection item is included in a search area that is set in a direction corresponding to an operation direction included in the operation information on the display surface, select the selection item at a position closest to a reference point of the cursor in the direction corresponding to the operation direction as the selection item to be a movement destination of the cursor.