Mosaic Screen Generation via DASH Metadata Segmentation

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Solution Overview

Problem

Current over-the-top video streaming technologies, such as DASH, do not easily facilitate the display of a mosaic screen featuring multiple videos and user selection of channels, as necessary metadata for generating such a screen is not distributed.

Innovation Solution

Incorporating metadata that includes signaling information for thumbnail videos suitable for a mosaic screen, allowing clients to receive and display multiple video streams in a lattice format, with distribution methods using both unicast and multicast protocols to optimize channel selection and display.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If DASH metadata distribution is used, then adaptive streaming is achieved, but mosaic screen generation is difficult

Engineering Contradiction:

Improveadaptive streaming capabilityVSAvoidmosaic screen generation

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The metadata is segmented into standard DASH elements and new thumbnail-specific elements. The MPD structure is divided into existing adaptation sets and new thumbnail adaptation sets, allowing independent processing of standard streaming and mosaic screen generation functions

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The metadata structure serves dual purposes: it enables both standard adaptive streaming through conventional DASH mechanisms and mosaic screen generation through newly added thumbnail video indicators, making the same metadata distribution system universally applicable to multiple functions

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Ease of operation

If thumbnail video metadata is added, then mosaic screen display is enabled, but metadata complexity increases

Engineering Contradiction:

Improvemosaic screen display capabilityVSAvoidmetadata structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

Thumbnail video metadata is nested within the existing MPD structure as thumbnail adaptation sets contained within period elements. This hierarchical nesting allows thumbnail information to be organized systematically within the established metadata framework without creating a separate complex structure

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

Thumbnail video segments are prepared and marked with identification information in advance during the metadata generation phase. This preliminary action allows clients to easily identify and retrieve thumbnail videos for mosaic screen display without requiring complex processing during playback

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS10382801B2Transmission apparatus, transmission method, reception apparatus, and reception method

Publication Date: 2019.08.13 SATURN LICENSING LLC

AI summary

The present technology relates to a transmission apparatus, a transmission method, a reception apparatus, and a reception method which can easily obtain a mosaic screen.Metadata of content is distributed, and the metadata is described using an attribute and an attribute value and includes signaling information indicating that a video is a thumbnail video suitable for constituting a mosaic screen, and the attribute indicating information to refer to a file including information to receive content supplied by a service. The present technology can be applied when, for example, content is to be distributed.