Touch Input Timing Determines Display Object Selection
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Solution Overview
Problem
Existing multi-touch operation methods for electronic devices with multiple display objects require cumbersome steps to select and process each object for enlargement, reduction, and rotation, as users need to explicitly choose the target object each time, leading to increased operation complexity.
Innovation Solution
An electronic device with a touch detector and processor configuration that automatically determines the target display object for processing based on the relative change between touch points during multi-touch operations, where the time difference between touch start points determines whether the middle point or the touch point itself is considered the processing target, allowing for intuitive image enlargement, reduction, and rotation without explicit selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multi-touch operation is implemented on multiple display objects, then the functionality for image processing is improved, but the operation complexity increases due to the need to select each target object separately
Solution Approach 1:
The system automatically determines the target display object based on the spatial relationship between touch points and object positions, eliminating the need for users to manually select targets. The control unit autonomously identifies which display object should be processed by calculating distances between touch positions and object centers, making the system self-serve the selection function that previously required user input.
2Measurement precision
If explicit selection of target display object is required, then processing accuracy is improved, but the number of operation steps increases
Solution Approach 1:
The system provides spatial feedback by detecting the position of touch points relative to display objects and automatically determining the target based on this spatial relationship. The control unit calculates the distance between each touch point and the center of each display object, and selects the object with the minimum total distance, providing accurate target selection through automated feedback mechanisms rather than manual selection steps.
3Measurement precision
If manual selection of display object is implemented, then operation precision is improved, but the ease of operation deteriorates
Solution Approach 1:
The control unit autonomously performs target identification by calculating spatial relationships between touch points and display objects. The system computes the distance from each touch point to the center of each display object, sums these distances for each object, and automatically selects the object with the minimum total distance, eliminating the need for users to manually specify which object to process.
Solution Approach 2:
The patent replaces manual mechanical selection operations with automated computational processing. Instead of requiring users to visually identify and select targets through manual interaction, the system uses the control unit to compute spatial relationships and automatically determine targets based on touch point positions, substituting mechanical user actions with automated algorithmic processing.
Data Source
AI summary
An electronic device includes: a control unit configured to control to regard, as a processing target, a display object at a position between touch positions of a first point and a second point and perform specific processing to the processing target according to a subsequent relative change between the touch positions when a multi-touch in which a time difference between starts of touching the first point and the second point is within a predetermined time is performed, and control to regard a display object at the touch position of the first point as a processing target and perform the specific processing to the processing target according to a subsequent relative change between the touch positions when a multi-touch in which a time difference between starts of touching the first point and the second point exceeds the predetermined time is performed.