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Method for realizing picture-in-picture playing function in IPIV

A picture-in-picture, functional technology, applied in color TV components, TV system components, TVs, etc., can solve the problem of inability to reduce channel switching time, resource overhead, and time extension, and save network resources and Effects of overhead, reduced latency, and reduced frequency of channel switching

Inactive Publication Date: 2009-07-29
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem of bandwidth is undoubtedly an important reason for restricting the large-scale promotion of IPTV at present
[0005] Considering the current types of domestic access networks and the general situation of digital communication usage by general broadband users, it seems to be a better choice to push one or two sets of programs at the same time, but it will cause the following problems: the channel switching of IPTV live service is due to Needs to be between two multicast groups, much longer latency than traditional TV systems where all channels are always pushed to user terminals over coaxial cable
For IPTV, it is impossible to meet such conditions in the current situation. If a multicast channel is simply pushed for the sub-picture to realize the picture-in-picture function, it is obviously impossible to achieve the purpose of reducing channel switching time and resource overhead.

Method used

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  • Method for realizing picture-in-picture playing function in IPIV
  • Method for realizing picture-in-picture playing function in IPIV
  • Method for realizing picture-in-picture playing function in IPIV

Examples

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Embodiment Construction

[0040] Figure 1 ~ Figure 4 Shown is the embodiment of the present invention, built on the existing video on demand (VOD) system of IPTV, including the operation control of each node in the server end and the transmission network, the production of special video in picture-in-picture and the application of local client end three part.

[0041] (1) The operation control of the server and each node in the transmission network

[0042] Such as figure 1 As shown, the specific steps of the operation control of the server and each node in the transmission network are as follows:

[0043] a. The live program source server supplies live programs to users in the form of multicast, and at the same time transmits and stores the live programs of all channels to the on-demand program source server for processing. Its purpose is: 1. Make live programs into on-demand programs, provide On-demand live programs or business content using the time-shift function; 2. Make live programs into pic...

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Abstract

A method for realizing pip playing function in IPTV includes three parts of operation control and pip special video preparation on each node at server end and in transmission network as well as application of local user end based on existed video on-demand system of IPTV CDN structure.

Description

technical field [0001] The invention relates to a video-on-demand (VOD) service in IPTV, in particular to a method for playing and previewing other live channel programs in the form of a picture-in-picture based on a video-on-demand (VOD) system in the IPTV. Background technique [0002] IPTV, that is, a TV system based on IP network, is based on the service of user experience as the core, with "TV + set-top box" as the main terminal equipment, and provides broadband users with an interactive TV experience through the broadband IP network of telecom operators , is a broadband value-added service that provides multimedia services. [0003] Compared with the traditional cable TV network, IPTV's bearer network—IP network has an absolute advantage in interactivity, so IPTV clients can enjoy all services on the Internet very conveniently. At the same time, due to the "best effort" inherent feature of the IP network, how to ensure the QoS of IPTV so that the user's quality of exp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/173H04N7/26H04N5/45H04N21/234H04N21/431
Inventor 梁梓杰罗笑南
Owner SUN YAT SEN UNIV
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