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Method and device for receiving and transmitting description of scene in rich media TV

A technology for scene description and rich media, applied in the field of transmission technology for rich media scene description, can solve the problem that the receiving system is difficult to achieve frame-level synchronization, and achieve the effect of enhancing the anti-error ability, improving the transmission efficiency, and avoiding the bandwidth overhead.

Active Publication Date: 2009-09-30
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to the synchronization model of SMIL, it is actually difficult for the receiving system to achieve true frame-level synchronization

Method used

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  • Method and device for receiving and transmitting description of scene in rich media TV
  • Method and device for receiving and transmitting description of scene in rich media TV
  • Method and device for receiving and transmitting description of scene in rich media TV

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Embodiment Construction

[0041] In the following description, many technical details are proposed in order to enable readers to better understand the application. However, those skilled in the art can understand that without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0042] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the implementation of the present invention in detail in conjunction with the accompanying drawings.

[0043] Firstly, some concepts used in various embodiments of the present invention will be described.

[0044] figure 1The transport protocol structure of ASR is shown. The rich media scene code stream can be transmitted together with the video stream, audio stream, picture code stream and other basic streams in the streaming media transport lay...

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Abstract

The invention relates to a network transmission protocol, and discloses a method and a device for receiving and transmitting description of a scene in a rich media TV, which enables a rich media scene code stream to be efficiently transmitted and cut in randomly in a streaming media mode and other streaming media modes, such as audio frequency and video, and the like. The scene is divided into sections, each section generates a scene group, the first scene unit of each scene group can be independently analyzed, and other scene units can be updated in turn. Parameters shared by the scene units in one scene group or a plurality of scene groups are put in a scene parameter group to be loaded by the independent scene unit. The scene unit is directly mapped to a transmitting layer. A time stamp is set for each scene unit on the transmitting layer to specify process time of each scene and be used for carrying out synchronization with other streaming media, such as video frequency, audio frequency, and the like.

Description

technical field [0001] The invention relates to a network transmission protocol, in particular to a transmission technology for rich media scene description. Background technique [0002] MPEG LASER is a technique for describing rich media application scenarios recently proposed by the Moving Picture Experts Group (MPEG for short). Although theoretically LASER can support applications ranging from Wireless Application Protocol (WAP) rich media (such as map applications) to mobile TVs. However, being compatible with too many other industry standards makes MPEG LASER more versatile, but less practical. In essence, the LASER standard is more suitable for downloading and playing rich media (via web pages) or streaming media on demand. However, LASER has certain limitations in supporting rich media in the form of broadcasting. Tools such as Scalable Vector Graphics (SVG for short), Synchronized Multimedia Integration Language (SMIL for short), and Document Object Model (DOM fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/24H04L29/06
Inventor 丁亚强武晓阳林福辉
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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