Touchscreen Deletion Items Drag Release Mechanism
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Solution Overview
Problem
Conventional QWERTY-type keyboards with separate Delete and Backspace keys are inconvenient for character deletion on touch-screen terminals, requiring users to select keys individually and input multiple key presses for deleting characters, especially when deleting multiple characters at once.
Innovation Solution
A touch-screen terminal displays multiple deletion items with designated schemes, allowing users to perform Drag and Release events to select and execute deletion functions, such as deleting characters to the left or right of the cursor, simplifying the deletion process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate Delete and Backspace keys are implemented in a QWERTY-type keyboard, then the deletion function can be provided, but the device complexity increases and the ease of operation deteriorates when deleting multiple characters
Solution Approach 1:
The patent combines multiple deletion functions (Delete, Backspace, and multi-character deletion) into a single key. When this key is pressed, it displays multiple deletion options, and the user can select the desired deletion scheme by dragging to the corresponding option, thereby merging multiple functions into one key to reduce keypad complexity while maintaining ease of operation
Solution Approach 2:
The single deletion key serves multiple functions: it can delete one character to the left, one character to the right, or multiple characters in either direction. By making this key universal and multi-functional, the patent eliminates the need for separate Delete and Backspace keys while providing comprehensive deletion capabilities
2Productivity
If multiple key presses are required to delete multiple characters, then the deletion function is provided, but the productivity decreases due to increased key input operations
Solution Approach 1:
The system performs preliminary action by displaying all deletion options immediately when the deletion key is pressed. The user can then select the desired deletion scheme in one operation by dragging to the corresponding option, rather than requiring multiple sequential key presses. This preliminary display of options enables the user to delete multiple characters in a single gesture, significantly improving productivity and reducing the time required for deletion operations
3Ease of operation
If the QWERTY keyboard is applied to a touch-screen terminal, then character input convenience is improved, but the device complexity increases due to limited screen size
Solution Approach 1:
The patent segments the deletion functionality into multiple discrete options displayed on the touch screen. Instead of requiring separate physical keys, each deletion function (delete left, delete right, delete multiple characters) is segmented into distinct selectable options that appear when the deletion key is pressed. This segmentation allows comprehensive deletion functionality to be implemented within the limited screen space without increasing overall device complexity
Solution Approach 2:
The patent transitions from a two-dimensional physical keyboard layout to a multi-layered touch interface. The deletion key occupies one position on the screen, but when activated, it reveals additional deletion options in another dimension (a pop-up or overlay interface). This dimensional transition allows multiple deletion functions to be accessed without increasing the footprint of the keypad on the limited screen space
Data Source
AI summary
An apparatus and a method for providing a character deletion function is provided. A plurality of deletion items having respective designated deletion schemes are displayed, when there is a request for a deletion mode while inputting characters. It is determined if a Drag event occurs after a Press event occurs in an area where one of the plurality of deletion items is displayed. It is determined if a Release event occurs when the Drag event occurs. A deletion function in a deletion scheme corresponding to a deletion item having an area where the Release event occurs is performed when the Release event occurs. Accordingly, a user has convenience with which, when inputting characters, the user receives various deletion schemes and can perform a desired deletion function in a simple way.