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Dynamic image distribution system and conversion device

A moving image and distribution system technology, applied in the direction of image communication, two-way work system, selective content distribution, etc., can solve the problems of image quality degradation, increase the processing burden of the converter, etc.

Inactive Publication Date: 2009-03-25
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, this approach has a problem in that decoding and re-encoding of each moving image data degrades the picture quality and increases the processing load on the converter

Method used

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  • Dynamic image distribution system and conversion device
  • Dynamic image distribution system and conversion device
  • Dynamic image distribution system and conversion device

Examples

Experimental program
Comparison scheme
Effect test

no. 4 example

[0130] Picture 12 Is a block diagram showing the configuration of a moving image distribution system according to an exemplary embodiment of the present invention. The moving image distribution system is a moving image distribution system for distributing one or more streams to the terminal 103 through a network (transmission path 803 and transmission path 105), and has a converter 802 configured to transfer the The capability information 806 designated by the delivery server 801 storing the stream is notified to the terminal 103 and receives at least one stream from the delivery server 801, or receives multiple streams from multiple delivery servers 801, and the semantics of at least one stream The conversion is performed to adapt it to the capability information 806, and they are transmitted to the terminal 103 through the network (transmission path 105).

[0131] More specifically, the moving image distribution system of this exemplary embodiment is composed of a delivery ser...

no. 5 example

[0139] Figure 13 Is a block diagram showing the configuration of a moving image distribution system according to an exemplary embodiment of the present invention. The moving image distribution system of this exemplary embodiment is a moving image distribution system for distributing one or more streams to the terminal 902 through the network (the transmission path 104 and the transmission path 903), and has a converter 901. It is configured to notify the terminal 902 of the capability information 907 specified by the terminal 902, and to receive at least one stream from the delivery server 101 in which the stream is stored, or to receive multiple streams from multiple delivery servers 101, and the semantics of the stream The conversion is performed to adapt it to the capability information 907, and then they are transmitted to the terminal 902 through the network (transmission path 903).

[0140] More specifically, the moving image distribution system of this exemplary embodimen...

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Abstract

A dynamic image distribution system distributes at least one stream to a terminal (103) via a transmission path (104) and a transmission path (105). The dynamic image distribution system includes a conversion device (102) which reports predetermined capability information to the terminal (103), receives at least one stream from a distribution server (101) in which streams are accumulated or receives a plurality of streams from a plurality of distribution servers (101), converts stream syntax so as to be appropriate for the capability information, and transmits the conversion result to the terminal (103) via the transmission path (105).

Description

Technical field [0001] The present invention relates to a moving image distribution system and a conversion device, and more particularly to the distribution of a video bitstream encoded by various coding tools and stored in a delivery server after the semantics (syntax) of a video bit stream is quickly converted while maintaining high picture quality And send it to the terminal's moving image distribution system and conversion equipment through the network. Background technique [0002] In recent years, as a moving image compression coding system that can be used to efficiently transmit moving image signals at a low bit rate, it has been known that ITU-T (International Telecommunication Union-Telecommunication Standardization Sector) recommends H.261 and H.264, and is approved by ISO / IEC MPEG-4 is internationally standardized. In addition, H.264 / MPEG-4AVC, which is internationally standardized by ITU-T and ISO / IEC, has attracted public attention because it is more efficient in m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/173H04N7/26H04N7/24H04N19/00H04N19/156H04N19/40H04N19/48H04N19/91H04N21/2343H04N21/258
CPCH04N19/00781H04N7/17318H04N19/00387H04N19/00884H04N21/6187H04N19/00472H04N21/25858H04N21/472H04N21/64707H04N21/25833H04N21/2402H04N19/00545H04N21/4826H04N19/00121H04N21/64738H04N21/6371H04N19/00563H04N21/2343H04N19/00236H04N21/4402H04N19/13H04N19/164H04N19/20H04N19/40H04N19/46H04N19/48H04N19/61H04N19/70H04N7/12
Inventor 渡边一辉小泽一范小山和广
Owner NEC CORP
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