Dynamic Scroll Region Control for Touch Screen Precision
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Solution Overview
Problem
Current portable terminals with touch screens lack a precise method to adjust content display regions using sliders or scroll bars, limiting user convenience in navigating and controlling information scrolling.
Innovation Solution
A method and apparatus that display an information scroll controlling region on the touch screen, allowing users to sense touches and perform dragging operations to change the scroll region's size and position, adjusting the content display accordingly, with features like expanding or reducing the scroll region in response to touch direction and distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a slider or scroll bar is used to adjust content display region, then basic scrolling function is provided, but precise adjustment of content display region is limited
Solution Approach 1:
The scroll controlling region dynamically changes its size and position in response to user touch operations. When a user drags the scroll pointer beyond its normal moving region, the scroll controlling region expands or shifts to accommodate the extended drag distance, enabling precise adjustment while maintaining ease of operation through natural touch gestures
Solution Approach 2:
The patent changes the parameters of the scroll controlling region (size, position, moving region boundaries) based on the touch operation characteristics. By detecting the drag direction and distance, the system adjusts the scroll controlling region parameters to provide precise control when needed while preserving simple operation for常规 scrolling
2Adaptability or versatility
If the scroll controlling region is expanded to allow greater adjustment range, then more precise control is achieved, but the interface complexity increases
Solution Approach 1:
The scroll controlling region is designed to be dynamic rather than static. It automatically adjusts its size and position based on user interaction, expanding only when needed for precise adjustment and returning to its normal state afterward. This dynamic behavior provides versatile adjustment range without permanently increasing interface complexity
Solution Approach 2:
The scroll controlling region serves multiple functions: it acts as a standard scroll control for常规 operations and simultaneously provides expanded precise adjustment capability when users perform extended drag operations. This multi-functionality allows a single interface element to handle both basic scrolling and precise positioning without requiring separate controls
Data Source
AI summary
An apparatus to control playback of multimedia contents comprising a touch screen to display an information scroll controlling bar and a scroll pointer, the information scroll controlling bar and the scroll pointer being included in an information scroll controlling region, and a controller to sense a touch at the scroll pointer on the touch screen, to sense a movement of the touch in a direction to a location outside the information scroll controlling region on the touch screen, to set a moving rate of the scroll pointer based on the sensed location outside the information scroll controlling region to control playback of multimedia contents, and to move the scroll pointer in a moving direction based on the direction of the movement.