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Communication technique able to synchronise received stream with that sent to another device

A receiver-device pair technology, applied to electrical components, transmission systems, etc., can solve problems such as inability to synchronize

Active Publication Date: 2013-12-18
INTERDIGITAL CE PATENT HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the receiving device cannot synchronize the components from the two streams

Method used

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  • Communication technique able to synchronise received stream with that sent to another device
  • Communication technique able to synchronise received stream with that sent to another device
  • Communication technique able to synchronise received stream with that sent to another device

Examples

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Embodiment Construction

[0026] exist figure 2 In , boxes represent purely functional entities, which do not necessarily correspond to physically separate entities. That is, they may be developed in software or implemented using one or more integrated circuits.

[0027] figure 1 is a block diagram of a system according to an embodiment of the invention.

[0028] The video server 1 transmits a first audio-video stream 8 (for example an MPEG-2 transport stream) over a first network (broadband network) 5 . A first audio-video stream 6 is received by STB 2 . The first audio-video stream 6 is displayed by the television 3 .

[0029] The second audio stream 7 is transmitted to the mobile terminal 4 via the second network 6 . The second audio stream corresponds to the first video stream. The user can watch the first video stream on the TV 3 and listen to the corresponding second audio stream in another audio language on the mobile terminal.

[0030] The first stream and the second stream are broadcas...

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PUM

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Abstract

An audio stream is to be synchronized with a video stream. Therefore a system that comprises a first device (4) comprising communicating means (1.1) for receiving in push mode a first multimedia content is disclosed. The first multimedia content is a first component of a stream comprising a second component, the first multimedia content comprises a presentation time stamp adapted to indicate the rendering time of the first multimedia content. Tuning means (1.5) are provided in the first device (4) for shifting the presentation time stamp value, the shifting is intended to synchronize the rendering to the rendering of a second multimedia content of the stream rendered at a second device (2). Further the first device (4) has outputting means (1.4) for rendering the first multimedia content according to the presentation time stamp. This system can be applied to deliver a lip-sync presentation in a broadband TV, or mobile TV system, which makes use of the MPEG-2 standard.

Description

technical field [0001] The present invention relates generally to digital television, and in particular to methods for synchronizing multiple streams on multiple receivers. Background technique [0002] This section introduces the readers to the prior art that may be related to various aspects of the present invention, and it is believed that useful background information can be provided to readers, thereby helping readers to better understand various aspects of the present invention. Accordingly, it is to be understood that the descriptions in this section are for the purposes stated above and do not constitute admissions of prior art. [0003] Currently, broadband TV and mobile TV coexist in multiple ways to deliver multimedia streams to end users. For broadband television, the receiver is usually standard television equipment connected to a receiving device called a Set Top Box or STB. For mobile television, the receiver is a mobile terminal, such as a mobile phone or a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04N21/436H04N21/44
CPCH04L65/4076H04L65/604H04L65/611H04L65/764
Inventor 让-巴蒂斯特·亨利阿里·布达尼
Owner INTERDIGITAL CE PATENT HLDG