Method and system for wireless real-time transmission of multichannel audio or video data

An audio data and transmission system technology, applied in the field of wireless transmission, can solve the problems of compromise performance, high cost of multi-channel differential signals, and achieve the effects of low production cost, simple effect error correction scheme, and elimination of phase errors between channels

Inactive Publication Date: 2009-07-15
ANT ADVANCED NETWORK TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the generation of multi-channel differential signals requires relatively expensive high-quality analog electronics plus expensive differential cables and connectors
[0008] Typically, currently available wireless audio distribution systems are non-standard radio or infrared solutions that use lossy audio compression methods, resulting in compromised performance

Method used

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  • Method and system for wireless real-time transmission of multichannel audio or video data
  • Method and system for wireless real-time transmission of multichannel audio or video data
  • Method and system for wireless real-time transmission of multichannel audio or video data

Examples

Experimental program
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Embodiment Construction

[0224] system

[0225] according to figure 1 The system includes one or several audio sources 2 that can be digital sources or analog sources, and the audio sources 2 also include the possibility of direct computer connection via a USB interface, for example. The source 2 is connected to an audio transmitter 3, which is further connected to a base station 4, which includes an antenna device 172 for wireless transmission. Typically, the transmitter 3 and the base station 4 are controlled by a remote controller 5 or a computer. The signal from the base station 4 is sent to the receiver 6 of the multi-channel (for example, surround) sound system 8 including several speakers 7 via the WLAN network 1 using isochronous multicast messages. In other words, the audio data from source 2 is converted into digital data by devices 3 and 4 and passed to the speaker receiver as standard WLAN digital data.

[0226] Transmitter base station

[0227] figure 2 Shows a simple example version of tr...

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Abstract

In this application is described a method and a system for streaming multi channel digital isochronous data. The method is used for streaming multi channel digital isochronous data, e.g. audio data, in a standard wireless local area network transmission system where bandwidth is reserved for both contention-based traffic and contention free traffic and the audio data (10) formed by samples (9) is organized in audio frames (174) and sent to receivers (6) using multicasting, within consecutive beacon intervals (137). In accordance with the invention the contention free traffic (138) of the beacon interval (137) is adjusted to an optimum value, and the length of the beacon interval (137) is adjusted such that a required amount of audio data (9) can be sent to the receivers (6) with minimum system delay.

Description

Technical field [0001] The invention relates to a method for wireless transmission mainly for audio purposes according to the preamble of claim 1. [0002] The invention also relates to a system for wireless transmission for audio purposes according to the preamble of claim 7. [0003] The invention relates to an error control method and system and a synchronization method and system. [0004] Typically, the subject of the present invention is a system and associated equipment and method for synchronization, anti-electromagnetic interference, wireless transmission of the highest studio-quality multi-channel digital audio. The same method can also be used as the basis for the multicast transmission of other digital information with the same type of real-time and bandwidth requirements, such as live digital video and television signal distribution on a local area. Background technique [0005] Introduction [0006] Under the currently known technology, studio quality multi-channel ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04S3/00H04L12/28
CPCH04L12/28H04W84/12
Inventor S·尼基莱T·林德曼
Owner ANT ADVANCED NETWORK TECH
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