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Content server, information processing device/method, network device and content distribution method/system

A technology for an information processing device and a content server, which is used in selective content distribution, two-way working systems, image communication, etc., and can solve problems such as low resolution and poor video quality.

Inactive Publication Date: 2012-08-08
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the methods described in the pamphlets of International Publication No. WO 2004 / 114667 and International Publication No. WO 2004 / 114668 have the problem that the quality of the video for channel switching is poor due to low resolution

Method used

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  • Content server, information processing device/method, network device and content distribution method/system
  • Content server, information processing device/method, network device and content distribution method/system
  • Content server, information processing device/method, network device and content distribution method/system

Examples

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no. 1 example

[0136]

[0137] First, refer to figure 1 , The content distribution system according to the first embodiment of the present invention will be described in detail. figure 1 It is an explanatory diagram for describing the content distribution system according to the present embodiment. Incidentally, in the following description, an IPTV system is used as an example of a content distribution system.

[0138] For example, such as figure 1 As shown, the content distribution system 1 according to this embodiment mainly includes: a plurality of content servers 10A, 10B, and 10C corresponding to respective channels, switches 12 and 18, routers 14 and 16, and a plurality of information processing used by viewers The devices 20A, 20B, 20C, and 20D, the planned release time point information transmission server 30 and the reference clock server 40.

[0139] The content server 10 corresponds to the broadcasting station of each channel in the IPTV system, and it encodes the video / audio content ...

no. 2 example

[0322]

[0323] First, refer to Figure 19 , The content distribution system according to the second embodiment of the present invention will be described in detail. Figure 19 It is an explanatory diagram for describing the content distribution system according to the second embodiment of the present invention. Incidentally, in the following description, an IPTV system is used as an example of the content distribution system.

[0324] For example, such as Figure 19 As shown, the content distribution system 1001 according to this embodiment mainly includes: multiple content servers 1010A, 1010B, and 1010C corresponding to each channel, switches 1012 and 1018, routers 1014 and 1016, and multiple information used by viewers The processing devices 1020A, 1020B, 1020C, and 1020D, the planned release time point information transmission server 1030 and the reference clock server 1040.

[0325] The content server 1010 corresponds to the broadcasting station of each channel in the IPTV sy...

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Abstract

A content server according to the present invention includes a plurality of encoders for encoding a video / audio content and for generating multiple compressed data streams from the video / audio content, where the video / audio content is encoded in such a manner that the positions of video frames corresponding to reference compressed video data and the time points of distribution of the reference compressed video data are different for the respective multiple compressed data streams, and a plurality of distribution sections for respectively acquiring from a separate encoder the compressed data stream generated by the encoder and for distributing the acquired compressed data stream, the plurality of distribution sections being assigned individual network addresses.

Description

Technical field [0001] The present invention relates to a content server, an information processing device, a network device, a content distribution method, an information processing method, and a content distribution system. Background technique [0002] By using IP multicast to publish videos compressed with high-efficiency encoding technologies (such as MPEG2, H.264 / AVC, etc.) to multiple terminals, Internet Protocol Television (IPTV) as a video publishing system using an IP network can be implemented with The service equivalent to the service of the TV system using conventional radio waves. [0003] However, due to the characteristics of the system, the IPTV system requires about 1 to 3 seconds for channel switching, so there is a problem that the time required for channel switching is relatively long compared with ordinary digital television broadcasting and the like. [0004] The problem stems from the two problems described below. The first problem is that it takes time for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/2343H04N21/235H04N21/2365H04N21/2389H04N21/435H04N21/438H04N21/4385H04N21/6437H04N21/647H04N7/173H04N21/2383H04N21/2385H04N21/6402
Inventor 五十岚卓也
Owner SONY CORP
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