Touch Pad Segmentation for Handheld Display Selection
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Solution Overview
Problem
Handheld devices with small visual displays face challenges in selecting and magnifying content due to the obscuration of the user's fingers, making it difficult to interact with small touchscreens effectively.
Innovation Solution
The content is decomposed into regions associated with active elements, which are mapped to corresponding touch-sensitive regions on a separate touch pad or integrated touch screen, allowing users to select and magnify elements more easily by interacting with the touch pad rather than the screen, using techniques like Voronoi decomposition and tessellation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the display screen is used as both visual output and touch input interface, then integration is improved, but finger obscuration during selection becomes worse
Solution Approach 1:
The display system is segmented into two separate components: a visual display screen for showing content and a separate touch-sensitive pad for input operations. This segmentation allows the touch pad to be used for selection without obscuring the display content, resolving the contradiction between integrated design and operational clarity.
Solution Approach 2:
A separate touch-sensitive pad acts as an intermediary device between the user and the display content. The pad provides tactile feedback and selection capability without requiring direct contact with the display screen, eliminating finger obscuration while maintaining interaction effectiveness.
2Volume of moving object
If the display screen size is reduced for portability, then device compactness is improved, but visibility and selection precision become worse
Solution Approach 1:
By separating the touch input function from the visual display, the system allows the display to be smaller while the touch pad can be optimized for precise input. The touch pad provides adequate selection precision without requiring the display screen to be large, resolving the contradiction between compactness and precision.
Solution Approach 2:
The touch-sensitive pad adds a new dimension for interaction by providing tactile feedback and selection capability independent of the visual display size. This allows precise selection on small screens through the separate pad interface, overcoming the limitations of small display size.
3Volume of moving object
If the display screen is made smaller for handheld portability, then portability is improved, but content visibility becomes worse
Solution Approach 1:
The system segments the interaction functions by providing a separate touch-sensitive pad for input operations. This allows the visual display to be minimized for portability while the touch pad compensates for the reduced display area by enabling precise content selection and manipulation without requiring larger screen real estate.
Data Source
Figure 1A~1B
Figure 1C~1I
Figure 2A~2B
AI summary
A hand-held electronic device, method of operation and computer readable medium are disclosed. The device may include a case having one or more major surfaces. A visual display and a touch interface are disposed on at least one of the major surfaces. A processor is operably coupled to the visual display and touch screen. Instructions executable by the processor may be configured to a) present an image on the visual display containing one or more active elements; b) correlate one or more active portions of the touch interface to one or more corresponding active elements in the image on the visual display; and c) adjust a layout of content shown on the display according to a probability of one or more actions that may be taken with the one or more active elements.