Touch Panel Character Selection via Track Segmentation
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Solution Overview
Problem
Conventional touch panel character selection methods often inadvertently select undesired characters, leading to user frustration as the touch track passes over multiple characters, resulting in incorrect selections.
Innovation Solution
An information processing apparatus and program that determines a selected region by recognizing character rectangles overlapping with a touch track, allowing precise selection of desired characters by connecting touch coordinates and performing character recognition to identify overlapping rectangles as the selection target.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a rectangle encompassing the entire touch track is determined as the selected region, then the selection process is simple, but undesired characters are also selected
Solution Approach 1:
The patent segments the touch track into multiple straight line segments connecting sequential touch coordinates. Instead of treating the entire touch track as one continuous region, each segment is analyzed separately to determine which characters are crossed, thereby precisely identifying only the characters that should be selected while avoiding inclusion of undesired characters.
Solution Approach 2:
The patent introduces an intermediary process of analyzing each straight line segment individually to determine character intersections. This intermediary step acts as a mediator between the simple touch gesture and the final character selection, ensuring that only characters actually crossed by the touch track are selected.
2Measurement precision
If the user repeats selection operations to exclude undesired characters, then accurate selection can be achieved, but the operation becomes troublesome
Solution Approach 1:
The patent performs preliminary analysis of the touch track by dividing it into straight line segments and determining character intersections in advance, before the user completes the selection operation. This preliminary action automatically identifies the correct characters to select, eliminating the need for users to perform repeated selection operations to exclude undesired characters.
Solution Approach 2:
The patent provides immediate feedback by highlighting the selected characters right after the user completes the touch gesture. The system automatically determines which characters to select based on the touch track analysis and displays the result, allowing users to verify the selection without needing to repeat operations.
3Productivity
If character regions are determined in units of predetermined number of characters, then processing efficiency is improved, but selection precision may be reduced
Solution Approach 1:
The patent segments both the touch track into straight line segments and the character regions into individual character units. By analyzing each straight line segment against each character region, the system achieves precise selection at the individual character level while maintaining processing efficiency through systematic segmentation and batch processing of these segments.
Data Source
AI summary
Provided is an information processing apparatus including: a processor; a touch panel; and a display, in which the processor receives input of touch coordinates through the touch panel, the processor determines, as a selected region, a character region from among a plurality of character regions in units of a predetermined number of characters on a screen that is currently displayed on the display and includes characters in a plurality of rows, the character region overlapping a touch track that is obtained by connecting the touch coordinates in order of inputting and continues in a plurality of rows, and the processor performs a predetermined process on the determined selected region.