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IP broadcast system, and multiplexer, receiving apparatus and method used in ip broadcast system

A multiplexer and broadcasting system technology, applied in broadcasting devices, broadcasting-related systems, devices that provide special services in sub-bureaus, etc.

Inactive Publication Date: 2012-05-30
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional packet length of about 1500 bytes cannot fully reflect the network performance

Method used

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  • IP broadcast system, and multiplexer, receiving apparatus and method used in ip broadcast system
  • IP broadcast system, and multiplexer, receiving apparatus and method used in ip broadcast system
  • IP broadcast system, and multiplexer, receiving apparatus and method used in ip broadcast system

Examples

Experimental program
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Embodiment Construction

[0022] figure 1 is a diagram showing a general configuration of an IP broadcast system according to an embodiment of the present invention. Reference symbols BS1 to BSn (n: natural number) represent transmitters installed for respective broadcasting stations or service providers, and symbols TV1 to TVm (m: natural number) represent television (TV) receivers.

[0023] First, the senders BS1 to BSn convert mutually independent broadcast programs from TS to RTP packets for network (CDN) transmission. These RTP packets are provided to the multiplexer 10, and the multiplexer 10 multiplexes a plurality of RTP packets again, thereby generating an Ethernet (Ethernet: registered trademark) frame dedicated to IP network transmission, and the Ethernet (registered trademark) The frame is sent to the network NW.

[0024] An Ethernet (registered trademark) frame is sent to a receiver (a combination of a STB (Set Top Box) and an existing TV receiver) 20 . The receiver 20 has set therein ...

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PUM

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Abstract

According to one embodiment, an IP broadcast system includes a transmitting side and a receiving side connected to the transmitting side through a broadcast network on an IP network. The transmitting side includes a multiplexer which generates a standardized multiplex frame including at least a header field and an information field by multiplexing a plurality of RTP packets. The receiving side includes a buffer which temporarily holds the multiplex frame from the broadcast network and a program reproducer which retrieves and analyzes the multiplex frame from the buffer, extracts a reproduction clock shared by a plurality of programs, demultiplexes a plurality of TSs for each program from the multiplex frame, and based on the reproduction clock, reproduces the programs from each TS.

Description

technical field [0001] The present invention relates to an IP broadcasting system for broadcasting TS (Transport Stream) of a plurality of programs from a broadcasting station to a broadcasting receiver through an IP broadcasting network, and to an IP broadcasting system for Multiplexer, receiving device and method in the invention. Background technique [0002] In recent years, in addition to transmitting broadcast content from broadcast stations to broadcast receivers through broadcast waves, the use of IP broadcast systems has expanded to users who transmit broadcast content to broadcast receivers through IP networks. Moreover, in the IP network, a large-capacity quality-controllable wide-area broadcast network called a content distribution network (CDN) or a next-generation network (NGN) has been widely used. In these networks, encoded data for high-resolution images is transmitted, while applications include video-on-demand (VOD) and IP broadcasting. [0003] Normall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L12/18H04H60/86H04L12/56H04L1/00H04L7/00H04N7/173H04N21/236H04N21/24H04N21/61
Inventor 君山健二大崎善朗佐藤直子前田哲男
Owner KK TOSHIBA