Touch Screen Image Display Pinch Gesture Selection
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Solution Overview
Problem
Image display apparatuses with touch screens face challenges in performing detailed settings and selections, such as setting image display modes or selecting images, due to the limitations of touch screen control, particularly with gestures like tap and pinch gestures.
Innovation Solution
The implementation of an image display apparatus that uses a pinch gesture to select and unselect thumbnails by determining a designated area on the touch screen, allowing for detailed setting and selection processes, including mode switching and zooming, through multi-touch gestures and specific operations like long taps and pinch-in/pinch-out gestures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If touch screen gestures (tap, pinch) are used for image display control, then ease of operation is improved, but detailed setting and selection capability deteriorates
Solution Approach 1:
The patent segments the gesture recognition into multiple stages: initial pinch gesture detection, coordinate tracking, and conditional response execution. This allows the system to maintain gesture simplicity while enabling complex selection operations through progressive gesture refinement
Solution Approach 2:
The patent implements dynamic gesture response where the system adapts its behavior based on gesture characteristics. The pinch gesture can trigger different outcomes (selection, unselection, or no action) depending on the designated area size and target item state, allowing versatile control through a single gesture type
2Productivity
If pinch gesture is used to select multiple thumbnails, then selection efficiency is improved, but precision in selecting specific target items deteriorates
Solution Approach 1:
The patent applies local quality by making the selection outcome dependent on the local characteristics of the designated area. Different selection behaviors are triggered based on whether the pinch gesture encompasses one or multiple thumbnails, allowing precise control over selection scope
Solution Approach 2:
The patent replaces traditional mechanical selection methods (clicking individual items or using shift-click) with a gesture-based system that uses spatial relationships and area calculation to determine selection outcomes, achieving both efficiency and precision
3Ease of operation
If designated area is determined by two coordinates, then ease of operation is improved, but accuracy in defining selection boundary deteriorates
Solution Approach 1:
The patent merges the two coordinate points into a rectangular designated area, combining their spatial information to create a well-defined selection boundary. This approach maintains gesture simplicity while achieving accurate area definition through coordinate integration
Data Source
AI summary
(Problem) To facilitate setting of an image display style and selection of images in an image display apparatus with a touch screen.(Solution to Problem) Thumbnails included in an area designated by a pinch gesture are all specified. If it is not true that “the thumbnails included in the designated area are all displayed in the selected style” (S2004, No), the thumbnails included in the designated area are all displayed in the selected style (S2005), and the status is set to selected state (S2006). If it is true that “the thumbnails included in the designated area are all displayed in the selected style” (S2004, Yes), the thumbnails included in the designated area are all displayed in unselected style (S2007), and the status is set to unselected state (S2008). If the gesture is continuously changed to a pinch-out gesture or a pinch-in gesture (S2010, No), the selected area or the unselected area are expanded or reduced depending on the status (S2014, S2015).