Touch Display Cursor Offset Mechanism for Input Precision
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Solution Overview
Problem
Users face challenges in providing precise input on touch displays, especially with large contact areas like fingers, as small graphical representations are difficult to interact with accurately, and current methods require complex gestures or menu navigation to initiate and terminate a cursor, which can be obstructed by the input implement.
Innovation Solution
An apparatus and method that receive continuous stroke inputs on a touch display, determining if the input is a cursor mode initiation and movement, causing a cursor to be offset from the contact region, allowing operations to be based on the cursor's position, thereby improving precision and reducing input errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a cursor is displayed at the contact region during touch input, then the input operation is simple, but the input precision deteriorates because the large contact area obscures small graphical representations
Solution Approach 1:
The patent introduces an offset spatial relationship between the contact region and cursor position, moving the cursor from the same location (2D plane) to a displaced location in the same plane. This dimensional adjustment allows the cursor to indicate precise graphical targets while the contact region remains separate, resolving the obscuration problem while maintaining simple touch-based cursor initiation
2Measurement precision
If complex gestures or menu navigation are used to initiate and terminate a cursor, then the input precision improves, but the device complexity and ease of operation worsen
Solution Approach 1:
The patent extracts the cursor initiation function from complex gesture sequences or menu navigation systems and implements it through a simple touch event. By separating the cursor initiation action from the contact input itself (using offset positioning), the system achieves precise cursor control without requiring users to learn or execute complex gesture protocols
Solution Approach 2:
The system automatically manages cursor initiation and termination through the touch interface itself, without requiring separate menu selections or complex gesture commands. The touch contact region naturally serves as both the input mechanism and the cursor control mechanism, with the offset cursor providing precision indication
3Ease of operation
If the cursor is displayed at the contact region, then the ease of operation improves, but the visibility of small graphical representations deteriorates due to obstruction by the input implement
Solution Approach 1:
By offsetting the cursor from the contact region, the patent creates a visible separation between the physical input implement location and the cursor indication location. This allows small graphical representations to remain visible at their actual positions while the offset cursor provides clear indication of the selection target, eliminating the obscuration effect
Data Source
AI summary
An apparatus, comprising a processor, memory including computer program code, the memory and the computer program code configured to, working with the processor, cause the apparatus to perform at least the following, receive indication of a continuous stroke input associated with a contact region of a touch display, the continuous stroke input comprising at least a first input, and a second input, cause display of a cursor offset from the contact region in response to determining that the first input is a cursor mode initiation input, cause display of cursor to move so that the cursor remains offset from the contact region in response to determining that the second input relates to a movement input, and determine an operation based, at least in part, on position of at least part of a cursor.