Dynamic Scrolling Speed Adjustment for List Navigation
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Solution Overview
Problem
Navigating large lists of audiovisual services in digital television systems is inefficient due to the need for numerous navigation commands, as existing methods do not adapt scrolling speed effectively based on the total number of elements, leading to impractical navigation when the list is extensive.
Innovation Solution
A method that adjusts the scrolling speed of a graphic characteristic within a list between a minimum and maximum speed, with the maximum speed determined by the total number of elements, allowing users to quickly reach a specific area and adjust speed as needed, using a simple command like a keyboard key, and providing visual feedback on scrolling speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If continuous scrolling is used with fixed high speed, then navigation through large lists is faster, but precision in stopping at desired elements is lost
Solution Approach 1:
The patent applies dynamics by making the scrolling speed variable rather than fixed. The system automatically adjusts scrolling speed based on the user's proximity to the target element - starting with high speed for rapid traversal and automatically decelerating as the focus approaches the target, enabling both fast navigation and precise positioning without requiring manual speed control
Solution Approach 2:
The system implements feedback by continuously monitoring the position of the focus relative to the target element and using this information to dynamically adjust the scrolling speed. The deceleration mechanism provides automatic feedback control, reducing speed when the focus nears the target to ensure precise stopping at the desired position
2Loss of time
If scrolling speed is increased for large lists, then navigation time is reduced, but control precision deteriorates
Solution Approach 1:
The patent resolves this contradiction by implementing dynamic speed adjustment that adapts to the navigation context. The system automatically transitions from high-speed scrolling when traversing large portions of the list to low-speed scrolling when approaching the target, thereby reducing overall navigation time while maintaining control precision at the stopping point
Solution Approach 2:
The system changes the speed parameter dynamically during navigation based on the distance to the target element. By automatically adjusting this critical parameter, the system achieves both fast navigation through large lists and precise positioning, eliminating the need for users to manually balance speed and precision
3Productivity
If automatic speed adjustment is implemented, then navigation efficiency improves, but system complexity increases
Solution Approach 1:
The patent applies self-service by implementing an automatic speed adjustment system that manages its own scrolling speed without requiring external control inputs from the user. The system autonomously monitors focus position, calculates appropriate speed adjustments, and executes deceleration automatically, thereby improving navigation efficiency while adding minimal complexity since the automation replaces rather than supplements manual control
Data Source
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AI summary
The invention concerns a method for browsing through items extracted from a specific list of items. One part at least of the items of the list is displayed and a browsing control enables a graphic feature to be moved by the user on the displayed items. The maximum speed of movement of the graphic feature depends on the total number of items of the list. In accordance with an improvement, the acceleration of the scrolling speed when the user maintains the browsing control also depends on the total number of items of the list. The invention also concerns a terminal equipped with a user interface for implementing said method.