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Channel changing method and device

A channel switching and channel technology, which is applied in the field of channel switching methods and devices thereof, can solve problems affecting channel switching time, etc., and achieve the effects of saving bandwidth, increasing channel switching speed, and improving user experience

Active Publication Date: 2017-07-18
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the above channel switching process, the time from when the FCC server sends the unicast media stream to the playback device to when the playback device decodes and plays the unicast media stream takes between 400ms and 500ms, which affects the channel switching time to a certain extent.

Method used

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Embodiment Construction

[0090] The embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention.

[0091] See figure 1 , Is a schematic diagram of a system architecture applying an embodiment of the present invention. The system architecture may be the system architecture of an IPTV system, including a program source, a head-end device 101, an FCC server 102, and a playback device 103. It should be noted, figure 1 The number and forms of the head-end devices, FCC servers, and playback devices in the schematic diagram of the system architecture shown do not constitute a limitation to the embodiment of the present invention.

[0092] Among them, the head-end device 101 is composed of a media relay function (MRF) and an encoder (Encoder). The head-end device 101 obtains the media content of the channel from the program source, compresses and encodes the media content, and converts it into a media file or media stream required by the...

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Abstract

The embodiment of the invention discloses a channel changing method and device, and the method comprises the steps that play equipment transmits a channel changing request for changing a channel to a target channel to an FCC (fast channel changing) server; the play equipment receives a low-code-rate media stream, transmitted by the FCC server quickly, of the target channel for playing; the play equipment receives a source code rate media stream of the target channel from head equipment when receiving a fast ending notification sent by the FCC server; the play equipment carries out the linkage and playing according to the source code rate media stream of the target channel and the low-code-rate media stream of the target channel. According to the invention, the method can improve the channel changing speed, shortens the channel changing time, and saves the bandwidth.

Description

Technical field [0001] The present invention relates to the field of interactive network television (Internet Protocol Television, IPTV), in particular to a channel switching method and device. Background technique [0002] Generally, an IPTV system is composed of a head-end device, a Fast Channel Change (FCC) server, and a playback device. The head-end device is composed of an encoder (Encoder) and a media relay function (MRF). [0003] In the IPTV system, the channel switching time is a very important indicator related to user experience. It refers to the time taken from the time the playback device initiates the channel switching to the normal playback of the I frame by the playback device. The media stream is formed with three types of I, B, and P frames alternately arranged at intervals, such as IBBPBBPIBBPBBP. The playback device only receives B and P frames and cannot be decoded separately. It must wait for the I frame to be decoded and played. Picture. The channel switchi...

Claims

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Application Information

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IPC IPC(8): H04N21/438H04N21/845H04N21/6437H04N21/6405H04N21/6408H04N21/231H04N21/8547H04N21/2662
CPCH04N21/23106H04N21/2662H04N21/4384H04N21/6405H04N21/6408H04N21/6437H04N21/8456H04N21/8547H04N21/8352H04N21/2343H04N21/23439H04N21/234363H04N21/234354H04N21/234345H04N21/234381H04N21/23424H04N21/234H04N21/6373H04N21/654
Inventor 邢刚王志兵魏志刚
Owner HUAWEI TECH CO LTD
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