Touch Panel AF Frame Selection via Intersecting Axis Markers
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Solution Overview
Problem
When selecting an autofocus (AF) frame on a touch panel, the overlap of the finger and AF frames makes it difficult for users to accurately determine which frame is selected, as existing methods either display the marker at the touched position or shift it, leading to confusion about the intended selection.
Innovation Solution
A display control apparatus that includes a touch detection unit, a specifying unit, and a display control unit to display identification marks in the form of intersecting axes at the touched position on the touch panel, allowing users to accurately identify the selected AF frame by showing lines indicating the intersection point, which is hidden when the touch is released.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a marker is displayed at the touched position, then the selection position can be indicated, but the finger and AF frames overlap making it difficult to figure out which frame is selected
Solution Approach 1:
The patent introduces an intermediary indicator (a marker or graphic element) that is displayed at the touched position to mediate between the user's touch input and the selected AF frame. This intermediary element serves as a visual bridge that indicates the selection position without requiring the finger to be visible, thereby resolving the contradiction between indicating selection position and maintaining visibility of the selected frame.
2Ease of operation
If a marker is displayed at a position shifted from the touched position, then the marker is not hidden by the finger, but it is difficult to accurately figure out which frame is actually selected
Solution Approach 1:
The patent employs dimensionality change by displaying the indicator not only at the touched position but also extending visual cues (such as lines or expanded markers) that provide spatial context. This allows the indicator to be visible above the finger while maintaining accurate association with the touched position through dimensional extension in the visual space.
3Extent of automation
If the finger touches the touch panel to select an AF frame, then direct selection is enabled, but the overlap of finger and AF frames makes it difficult to determine which frame is selected
Solution Approach 1:
The patent utilizes color changes and visual property modifications of the indicator or surrounding elements to provide feedback about the selected frame. By changing the color, brightness, or visual prominence of the indicator at the touched position, the system communicates selection information without requiring the finger to be visible, thus preventing information loss while maintaining direct touch selection.
Data Source
AI summary
A display control apparatus includes a touch detection unit configured to detect a touch performed on a display unit, a specifying unit configured to specify a target of specification in a predetermined region of the display unit according to a touched position, and a display control unit configured to control an object identification mark to be displayed in the predetermined region so as to indicate a first axis and a second axis that makes the target specified by the specifying unit based on the touched position of the touch become an intersection point with the first axis in response to the touch performed in the predetermined region, and control the object identification mark to be hidden when the touch is released.