Dynamic Image Region Enlargement for Miniaturized Screens
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Solution Overview
Problem
Miniaturized screens on devices such as PDAs and mobile telephones make it difficult for users to follow audiovisual events, as the miniaturization of the screen area hinders the ability to view important parts of the image effectively, despite adaptations like DVB-SI attributes and metadata for image formatting.
Innovation Solution
A method and device that determine and enlarge specific areas of interest within an audiovisual document based on its content, allowing for customizable display on various devices, with the enlargement ratio adjusted according to the screen size and recomputed during playback, enabling better legibility of actions on small screens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the screen is miniaturized to reduce device size, then portability is improved, but the ability to view important parts of the image effectively deteriorates
Solution Approach 1:
The patent divides the image into multiple regions of interest and displays them at different zoom levels. The screen is segmented into areas that can be independently enlarged, allowing users to focus on specific important parts while maintaining context. This segmentation enables effective viewing on miniaturized screens by presenting content in manageable portions rather than requiring the entire image to be visible at full size.
Solution Approach 2:
The patent implements dynamic zooming and panning capabilities that adjust the display in real-time based on user interaction and image content. The system dynamically determines which areas should be enlarged and by what ratio, adapting the display to the miniaturized screen constraints. This dynamic adjustment allows the screen to effectively present important details despite its small size.
2Area of stationary object
If display adaptation is applied to maximize screen area usage, then screen utilization is improved, but the ability to follow events on miniaturized screens deteriorates
Solution Approach 1:
The patent applies different display qualities to different regions of the image. Instead of uniformly adapting the entire screen, it identifies specific local areas that require enlargement and applies enhanced display parameters only to those regions. This local quality adjustment ensures that important events remain visible and distinguishable on miniaturized screens while still utilizing the available screen area effectively.
Solution Approach 2:
The patent changes display parameters such as zoom ratio, pan position, and region selection based on the detected important areas and screen characteristics. By dynamically adjusting these parameters, the system optimizes the balance between screen area utilization and event followability. The enlargement ratio and region selection are modified to match the capabilities of miniaturized displays.
3Ease of operation
If metadata is transmitted to define enlargement regions, then the ability to enlarge specific areas is improved, but bandwidth consumption increases
Solution Approach 1:
The patent enables the playback device to autonomously analyze the image content and determine which areas should be enlarged without requiring extensive metadata from the broadcaster. The device uses its own processing capabilities to identify important regions and calculate appropriate enlargement ratios, thereby reducing the metadata transmission burden while maintaining effective area enlargement functionality.
Solution Approach 2:
Instead of transmitting complete metadata for every possible image region, the system transmits only the essential information needed to identify and enlarge the most important areas. This partial action approach reduces bandwidth consumption while still achieving the desired enlargement capability for critical content regions.
Data Source
AI summary
The invention discloses a method of viewing audiovisual documents on a playback device, comprising a step for reading or receiving a document and a display step for viewing the images of this document on a screen. The method further comprises a step for reading or receiving an attribute associated with a time band of the document. A predetermined value of the attribute triggers on the device the enlargement of a part of the image on playback during said time band, because of which this image part occupies a larger area on screen.