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

CN100521776CInactive Publication Date: 2009-07-29SUN YAT SEN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2009-07-29
Estimated Expiration
Not applicable · inactive patent

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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.
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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...

Examples

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...