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Network media playout

A technology for media playback equipment and networks, applied in data exchange networks, digital transmission systems, instruments, etc., to solve problems such as unrealistic interaction and clock offset accuracy

Inactive Publication Date: 2005-01-12
GOOGLE LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] One solution to this problem is to use one clock for all processing as used on the DSP, however, for the case where the central processing unit handles the interaction with the packet network, jitter buffering and decoding, and the sound card handles the D / A conversion This is not practical for a PC
It's not just a matter of accuracy that will cause "clock skew" as explained with reference to Figure 1

Method used

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Embodiment Construction

[0022] This description provides the best exemplary embodiment only, and does not limit the scope, applicability or structure of the invention. This description of the preferred exemplary embodiment will provide those skilled in the art with an adequate description for implementing exemplary embodiments of the invention. It should be understood that various changes can be made in the function and arrangement of elements without departing from the spirit and scope of the invention as set forth in the claims.

[0023] The present invention provides a system and method for improving playback of media streamed from a packetized network. The buffer of the media playing device is monitored, so that the continuous playing of the media can be greatly guaranteed. This is done by comparing the amount of media in the cache to a threshold. Once the amount of data is less than the threshold, data is requested from the jitter buffer. The jitter buffer either has data to pass to the decod...

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PUM

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Abstract

A method and a device for processing a media stream received as a plurality of packets from a packet communication network are provided. The received packets are stored in a first buffer. According to the method, a fill level of a second buffer is compared with a threshold and, if the fill level is below the threshold, a portion of the media stream is retrieved from the first buffer. The retrieved portion is then loaded in the second buffer.

Description

technical field [0001] The present invention relates generally to real-time media playback, and more particularly to computer media playback of network-provided media. Background technique [0002] The receiver portion of the packet communication device is characterized by having as input an asynchronous packet stream. A real-time media playback device needs to generate continuous output data eg to a speaker. Furthermore, for real-time applications such as telephony, audio streaming or video streaming, delay minimization is important, therefore the delay in the receiver and playback device should be as small as possible. [0003] The real-time media playback device is defined as software and / or hardware that converts the digital media signal into a signal suitable for playback, eg an analog signal to be fed to a loudspeaker. In a computer, when the media is sound, the real-time media playback device is usually called a sound card or soundboard, and when the media is video,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/64H04L29/06
CPCH04L29/06027H04L2012/6481H04L65/604H04L12/6418H04L2012/6489H04L29/06H04L65/80H04L2012/6472H04L65/764H04L9/40H04L65/1101
Inventor 尼克拉斯·恩博姆弗雷德里克·加尔希奥特
Owner GOOGLE LLC