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Seeking and synchronization using global scene time

A global and timeline technology, applied in the direction of carrier index/addressing/timing/synchronization, electrical components, transmission system, etc.

Inactive Publication Date: 2013-09-18
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes it impossible to create streams that are defined to replay based solely on transport-level timestamps

Method used

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  • Seeking and synchronization using global scene time
  • Seeking and synchronization using global scene time
  • Seeking and synchronization using global scene time

Examples

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example Y

[0065]

[0066] where X and Y are arbitrary time values. The decoder looks for the nearest random access point (RAP), ie the nearest or last base scene element 300 before time instance X+Y. Random access points are decoded and scenes with document times are created. Then, the rich media stream is decoded, ie the media stream units are decoded while advancing the document time forward to time instance X+Y as fast as possible. Meanwhile, run the script as needed. As mentioned above, simultaneous positioning is positioned simultaneously in the global timeline 301 and the document timeline 302 . Subsequently, the scene can be displayed and normal decoding can continue.

[0067] When it is desired to locate in a rich media stream such as a DIMS stream, the proposed global seek method can instead be considered from an encoder point of view, simply inserting a GlobalSeek command / instruction, which can be server initiated or user initiated. In the case of server-initiated ...

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Abstract

A method of seeking in a rich media stream provided from a multimedia server to at least one multimedia client, wherein the method may be executed in an encoder of a multimedia server or a decoder or a multimedia client. A seeking instruction is inserted into the media stream at time instance X, comprising an offset time instance Y, in order to be used for seeking at a global time rate. A method for enabling synchronization in a rich media stream wherein the synchronization is based on a global timeline is also provided.

Description

technical field [0001] The present invention generally relates to methods and apparatus for allowing seeking in a global timeline stream of a rich media stream, and for allowing synchronization based on transport level timestamps in a rich media stream. Background technique [0002] Scalable Vector Graphics (SVG) is an XML-based language for the representation of static and dynamic vector graphics. SVG is vector based, which means the content is not made for certain screen resolutions, but can be easily scaled. SVG is standardized by the World Wide Web Consortium (W3C). The mobile profile of SVG version 1.1 was adopted by 3GPP Release 5 and is supported by approximately 100 million mobile handsets today. [0003] SVG Tiny 1.2 is a more powerful version of SVG designed specifically for mobile devices, which is described in more detail in the "Scalable Vector Graphics (SVG) Tiny 1.2 Specification" (W3CCandidate Recommendation, August 10, 2006). This specification is current...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L65/613H04N21/236H04N21/44
CPCH04N21/6587H04N21/8456H04N21/8543H04L65/4092G11B27/10H04L29/06217H04N21/8455H04L29/06469H04N21/8547H04N21/654H04L65/1016H04N21/43072H04L65/613
Inventor C·普里德尔P·弗罗德
Owner TELEFON AB LM ERICSSON (PUBL)