Adaptive Description File Management for Real-Time Broadcast

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Solution Overview

Problem

The existing adaptive progressive download technique for multimedia content requires large second-type description files for catch-up functionality, which consume excessive bandwidth and processing resources, leading to potential delays and image glitches in content playback.

Innovation Solution

The proposed solution involves receiving a second-type description file and successively updating it with parts of the first-type description files received subsequently, thereby reducing the bandwidth requirements and processing load by transmitting only a limited number of second-type files and smaller first-type files.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If second-type description files are transmitted periodically to enable catch-up functionality, then users can replay content from the beginning, but bandwidth consumption increases excessively

Engineering Contradiction:

Improvecatch-up functionalityVSAvoidbandwidth consumption

Core Design Contradiction:

Adaptability or versatilityVSLoss of energy

Solution Approach 1:

The description file transmission is segmented into two types: first-type files transmitted periodically every 2 seconds containing recent segment information, and second-type files transmitted only when catch-up mode is activated containing historical segment information. This segmentation allows the system to provide catch-up functionality while minimizing bandwidth consumption by transmitting large second-type files only when needed rather than continuously

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of transmitting complete second-type description files every time, the system transmits only the necessary portions: first-type files provide incremental updates for recent content, while second-type files are transmitted partially and only when catch-up mode is explicitly activated. This partial action approach reduces bandwidth consumption while maintaining functionality

Inventive Principle:

Principle #16Partial or excessive action

2Adaptability or versatility

If large second-type description files are transmitted periodically, then catch-up mode is enabled, but processing time increases causing playback delays

Engineering Contradiction:

Improvecatch-up modeVSAvoidprocessing time

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The system prepares first-type description files in advance and transmits them periodically, so when catch-up mode is activated, the playback device already has recent segment information available. This preliminary action reduces the processing time required when entering catch-up mode, as the device doesn't need to process a complete large description file from scratch but can utilize the pre-transmitted first-type files

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

By segmenting the description file transmission into periodic first-type files and on-demand second-type files, the system avoids the need to process large complete description files continuously. The segmentation allows the playback device to process smaller first-type files regularly, reducing processing time and preventing playback delays

Inventive Principle:

Principle #1Segmentation

3Adaptability or versatility

If second-type description files are transmitted regularly, then content replay is supported, but image quality deteriorates due to bandwidth limitations

Engineering Contradiction:

Improvecontent replayVSAvoidimage quality

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The system transmits second-type description files only partially and only when catch-up mode is activated, rather than transmitting them regularly. This partial transmission approach ensures that bandwidth resources are allocated to transmitting high-quality content segments rather than being consumed by regular transmission of large description files, thereby maintaining image quality while still supporting content replay functionality

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentEP4554231A1Method for managing access to description files associated with content broadcast in real time

Publication Date: 2025.05.14 ORANGE SA

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AI summary

The invention relates to a method for managing access to description files associated with content broadcast in real time, reading requiring the reception, from a communication network, of description files of a first type, and of a second type, characterized in that it comprises the reception, following a request for access to content, of both a description file of the second type and successive description files of the first type; and in that the received description file of the second type is supplemented over time by at least a part of the description files of the first type received successively.