KR20090014724A

KR20090014724A - Iptv system by using of enhanced tv

Info

Publication number: KR20090014724A
Application number: KR1020070078889A
Authority: KR
Inventors: 권혁주
Original assignee: (주)넥솔텔레콤
Priority date: 2007-08-07
Filing date: 2007-08-07
Publication date: 2009-02-11

Abstract

An IPTV(Internet Protocol Television) system using TV in which it is possible for the efficient use of a frequency is provided to present an interactive service in which a receiving device and a broadcast station interact. A data carousel generator generates a transport stream with video/audio data sent in a broadcast station and ETV application generated in an ETV authoring tool. A TS-IP(Transport Stream-Internet Protocol) system enables the generated transport stream to be connected to the Internet(105) by payload encapsulated in an IP header. A receiver provides a data broadcasting service by using an IP(Internet Protocol). A return message processor provides a return channel. An application server provides a VOD(Video On Demand) service by transmitting through the IP of a user through the Internet. An IP-TS system module performs video and audio decoding among a video stream, an audio stream, ETV contents, and broadcasting related information and enables an ETV user agent to process the ETV contents and the broadcasting related information.

Description

IPTV system by using iTV {IPTV system by using of Enhanced TV}

Broadcasting is largely divided into digital broadcasting and analog broadcasting. Currently, digital broadcasting is commercially available and will soon replace conventional analog broadcasting. At present, various technical developments are being carried out in the fields of transmission of a digital broadcasting signal through a broadcasting network, multiplexing of data, processing video and audio signals, and displaying a digital television. Digital broadcasting is capable of extruding low data compared to analog broadcasting, has a high transmission speed, and has excellent sound quality and image quality. Unlike conventional analog broadcasting, digital broadcasting has an advantage of enabling efficient use of frequency by digital modulation. Therefore, various information can be broadcasted through hundreds of channels, and the viewer can access various information through the television.

In digital TV broadcasting, various data consisting of texts, pictures, sound, etc., are separated from the basic TV program in a transmission signal and broadcast together so that additional content is provided to the viewer, and the viewer requests or response to the data broadcast. It is a service that implements interactive TV by interacting by receiving and applying to a program and airing.

For example, the user can check the character or the background of the history while watching a predetermined history program, and can check the user's favorite data of the singer or the player while watching a show or a sports program. To provide.

Enhanced TV sets the standard for use in OCAP by CableLabs. Enhanced TV is a standard for data broadcasting in cable broadcasting and can provide data broadcasting only through cable.

With the rapid increase in network speed and the development of QoS technology on the Internet, IPTV has emerged to enable digital broadcasting services such as satellite, cable, and terrestrial on the Internet, and each company develops IPTV products using its own technology. In addition, various standardization activities and researches related to IPTV are actively conducted. Currently, the phase 1 standard has been released for the IP digital broadcasting service based on MPEG2 TS.

However, current standards of data broadcasting are different from country to country, and there are many different standards in one country. Currently, the focus is primarily on providing over-the-air audio and video content of a given broadcast program and its associated data content and presenting interactive services that allow the receiving device and broadcaster to interact with each other. It's just that, it's not actually happening.

As described above, the conventional IPTV has no standard for data broadcasting associated with broadcasting, and a method for return channel and VOD service is not defined. An object of the present invention is to provide a data broadcast service by transmitting an ETV application, an ETV signal and a trigger to a data carousel along with video / audio data sent from a broadcasting station to service a data broadcast using an internet protocol. Do it.

According to the present invention, if the IPTV data broadcasting standard is serviced by Enhanced TV, the data broadcasting service can be performed without a VM or middleware required for the existing data broadcasting, and users can use the application server through an internet network that is widely used. Can interact with

1 is an overall configuration diagram of data broadcasting service in Internet protocol using Enhanced TV according to the present invention.

In the present invention, a data stream is generated through the data carousel generator 103 for the video / audio data 101 sent from the broadcasting station and the ETV application generated by the ETV authoring tool 102 for data broadcasting using the Internet protocol. do. The generated transport stream is encapsulated in an IP header through the TS-IP system 104 and connected to the Internet network 105. The receiving device 107 analyzes the IP header through the IP-TS system 106 to obtain a transport stream, and analyzes the transport stream to display video / audio data on a TV screen and the ETV application to the receiving device 107. It is executed through the user agent which provides data broadcasting service using internet protocol.

In addition, when the user requests the VOD or the user request message is executed during the ETV application, the return message processor 108 provides the return channel by encapsulating the user's message by encapsulating the IP header of the digital TV. .

When the application server 109 receives the user's message, the application server 109 analyzes the message and responds directly to the user. When there is a request for VOD, the VOD server 110 searches for the VOD server 110 and transmits the same through the Internet network 105 through the user's IP.

Before creating an ETV application in the ETV authoring tool and generating a transport stream through the data carousel generator, the ETV authoring tool must transmit the ETV signal to the data carousel.

The IP-TS system module performs video and audio decoding among video streams, audio streams, ETV content, and broadcast related information, and the ETV user agent processes and performs the ETV content and broadcast related information.

The return channel message processing unit at the receiving device sets a separate identification processor to send a message to the application or receive a response to the user's request. In addition, when the VOD is sent from the application server by placing a demultiplexer in the return channel message processing unit, the demultiplexer separates it into a video / audio stream, and the ETV user agent plays it to provide a VOD service.

1 is a block diagram of an IPTV system using an enhanced TV according to the present invention.

Claims

A data carousel generator for generating a transport stream to the ETV application generated by the ETV authoring tool and the video / audio data sent from the broadcasting station, and the payload is encapsulated in the IP header to the Internet network 105. Through the TS-IP system and the IP-TS system, the IP header is analyzed to obtain a transport stream, and the transport stream is analyzed to display video / audio data on a TV screen, and the ETV application is a user agent on a receiving device. Receiver to provide data broadcasting service using internet protocol, and encapsulate user's message in digital TV's IP header when user requests VOD or user request message during ETV application. A return message processing unit for providing a return channel by transmitting the When a user receives a message, it analyzes it and responds to the user immediately, and if necessary, delivers the message to an ETV application provider. When a request for a VOD is requested, the VOD server 110 is searched and the user's IP is retrieved. The video server and the audio server perform video and audio decoding among the video server, the audio stream, the ETV content, and the broadcasting related information, and the ETV user agent processes the ETV user agent. An IPTV system using an Enhaced TV including an IP-TS system module.