KR20040061254A - Digital broadcasting receiver and internet broadcasting service method - Google Patents

Abstract

PURPOSE: A digital broadcasting receiver and a method for providing Internet broadcasting service thereof are provided to carry out data broadcasting through Internet at a remote place. CONSTITUTION: A digital broadcasting receiver includes an AV service part(110) for determining MEPG-2 audio/video data by a network bandwidth to convert the data to image format of a high compression rate such as MPEG-4 and Divx, thereby providing streaming service in real time via Internet. A data broadcasting conversion part(120) encodes data broadcasting contents to markup language such as HTML to perfectly watch languages such as xHTML, XML, CSS and the like in a web browser by using information obtained by parsing tables on the data broadcasting. A data broadcasting synchronizing part(130) synchronizes the data broadcasting with images by searching PCR(Program Clock Reference) information of the MPEG-2 streams. A broadcasting control part(140) controls the Internet broadcasting in the web browser of a PC by menu.

Description

Digital broadcasting receiver and internet broadcasting service method {Digital broadcasting receiver and internet broadcasting service method}

The present invention relates to a digital broadcast receiver and a method for providing the Internet broadcast service. More particularly, the present invention relates to a digital broadcast receiver and an internet broadcast that provides an environment such as watching a broadcast in a home through the Internet at a remote location without remaining within the limited functions of the conventional digital broadcast receiver. It relates to a service method.

Since the beginning of the digital broadcasting era, all signals have been digitally processed, so that users can enjoy vivid and clear image quality. Digital broadcast receivers are interactive multimedia devices that can exchange information with data as images and sound are treated as digital data. I am going to turn into.

Thus, an era of interactive TV is taking place, one step further from early broadcasters where the viewers were only passive.

For example, while watching a TV program screen, you can play the game through the remote control of the broadcast receiver while setting the screen as a wallpaper, and viewers can directly request information such as weather, fortune telling, and traffic.

In the case of sports events, viewers can click on the players or teams they're curious about to see the details.

The DVB-MHP method, which is currently used as a data broadcasting standard for satellite, terrestrial and cable digital broadcasting in Europe, is adopted by all European countries and most of Asia except Japan, and the ATSC-DASE method of the US It is adopted as a standard in Canada.

As each standard is prepared and the actual data broadcasting is started through test broadcasting, the digital broadcasting receiver is also equipped with middleware for receiving data broadcasting. Progress has been made, such as providing additional service functions.

Figure 1 shows an example of accessing such a digital broadcast receiver via a PC from a remote PC.

As shown, the digital broadcast receiver 10 receives various digital broadcasts through a cable, a satellite antenna 30 or a terrestrial antenna 20, and via the Internet 40 at a remote PC 50 such as a company. The digital broadcast receiver 10 can be remotely controlled by accessing the home digital broadcast receiver 10.

For example, FIG. 2 illustrates an example of directly viewing an EPG (Electronic Program Guide) on a TV screen using a digital broadcast receiver. The remote PC 50 is connected to the digital broadcast receiver and then, as shown in FIG. EPG information can be viewed.

By the way, the conventional digital broadcast receiver 10 was only able to perform basic control by remote access through the Internet 40.

For example, by executing a web server program on the digital broadcast receiver 10, as shown in FIG. 3, the EPG information can be viewed using a web browser at a remote location, or scheduled recording of the broadcast using this EPG information. It provided only limited services.

Therefore, the remote site did not have the effect of watching a broadcast through a digital broadcast receiver at home through the Internet.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a digital broadcast receiver that provides an environment as if watching a broadcast in the home through the Internet at a remote location without remaining in the limited function of the existing digital broadcast receiver. The Internet broadcasting service providing method is to provide.

In order to achieve the above object, the present invention provides a digital broadcasting receiver for providing an Internet broadcasting service of digital broadcasting;

An AV service unit that provides a real-time streaming service by converting an audio and video data format in MPEG-2 format defined by the digital broadcasting standard into a highly compressed video format. The application that converts and encodes to a language that can be viewed using the same interface and executes the content is a data broadcasting conversion unit for converting into an applet executable in a web browser, and the video streamed in real time by the AV service unit. The data broadcasting synchronization unit for displaying the data broadcasting content converted by the data broadcasting conversion unit in accordance with the synchronization, and provides a control function related to the Internet broadcasting service of the digital broadcasting in the menu of the web browser, the control request via the Internet Digital broadcast if present And to provide a digital broadcast receiver, characterized by consisting of a broadcast controller to forward the command to run in wear.

In order to achieve the above object, the present invention provides a method for providing an Internet broadcast service in a digital broadcast receiver connected through a plurality of PCs and the Internet remote;

In the case of requesting broadcast information by accessing the digital broadcast receiver from the PC, the digital broadcast receiver shows a digital broadcast list stored in a medium such as EPG information or HDD in a web browser of the PC, and among the digital broadcast lists. When selecting a broadcast to be watched, the digital broadcast receiver classifies the stream of the selected broadcast into a video stream and a data broadcast stream, and converts the video stream and the data broadcast stream into a web browser according to the environment of the web browser, respectively. Obtaining the streaming video and data broadcasting content, displaying the data broadcasting content on the remote PC in synchronization with the streaming service video in real time, and displaying a list of functions related to the Internet broadcasting service. Show on and control from remote PC If there is a request, the present invention provides a method of providing an Internet broadcast service for a digital broadcast receiver, comprising: transmitting a command to the digital broadcast receiver and performing a related function according to the command in the digital broadcast receiver.

1 is an example of accessing a digital broadcast receiver through the Internet at a remote location.

2 is an exemplary view showing an EPG on a TV screen using a digital broadcast receiver.

3 is an exemplary view of viewing EPG information through a web browser while connected to a digital broadcast receiver from a remote location.

4 is an exemplary view illustrating receiving a digital broadcast with a digital broadcast receiver and displaying it on a screen.

5 is an exemplary view of viewing digital broadcasting by accessing the digital broadcasting receiver with a web browser from a remote PC.

6 is a block diagram of a digital broadcast receiver according to the present invention.

7 is a flowchart illustrating a method for providing an internet broadcasting service according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: digital broadcast receiver 20: terrestrial antenna

30: satellite antenna 40: the Internet

50: PC 100: Digital Broadcast Receiver

110: AV service unit 120: data broadcasting conversion unit

130: data broadcasting synchronization unit 140: broadcasting control unit

150: web server

Hereinafter, the configuration and operation of the present invention will be described with reference to the accompanying drawings.

First, digital broadcasting and data broadcasting will be described in order to help understanding of the present invention.

4 illustrates an example of receiving a digital broadcast with a digital broadcast receiver and displaying it on a screen.

Digital broadcasting is gradually becoming bidirectional, and includes data broadcasting.

In the case of video, the stream is currently broadcasted in MPEG-2 video format, and in the case of audio, the ATSC standard is Dolby AC3 format and in the case of DVB, MPEG-2 audio format.

Data broadcasting includes the information related to data broadcasting in a Program Specific Information (PSI) table in the ATSC standard and in the DVB-SI (System Information) table in the DVB standard. The broadcast is based on.

Here, data broadcasting service means providing additional information produced in a multimedia form in addition to the existing broadcasting program.

For example, it means providing a player's career, recent achievements, etc. together with a soccer game, or providing various additional information such as living information such as weather / news / transportation and internet / e-commerce.

Data broadcasting standards can be classified into transmission standards and digital broadcasting receiver operating environment and contents standards. The transmission standard is related to the transport protocol for transmitting additional content for data broadcasting. Basically, various protocols suitable for various characteristics of services provided are presented.

Taking the ATSC standard as an example, the data carousel method and other communication protocols for information such as news that are not directly related to the content being broadcast and need to be continuously updated. A method of transmitting data programs in the form of MPEG-2 private sections to transfer the defined datagrams in an asynchronous manner, and MPEG-2 PES (which is useful when temporal synchronization between data contents is required). Packetized Elementary Streams), and data piping methods that define the format of data.

Data broadcasting content basically consists of 'descriptive content' (document-type content created on the basis of HTML such as web content) and 'procedural content' (Java-based program-type content). Clips, graphic animations and the like can be used.

The standard for the operating environment and contents of the digital broadcast receiver basically defines the operating environment and the format necessary for the descriptive content and the procedural content performed by being expressed in Java language to be decoded and represented in the digital broadcast receiver.

Even in the DVB standard, there are some differences in the language and expression method for describing the data broadcasting content, and the basic concept and configuration of the ATSC standard are the same.

5 shows an example of accessing a digital broadcast receiver at home from a remote PC to a digital browser and viewing digital broadcasts.

According to the present invention, as shown in Fig. 5, even in a remote PC, it is possible to show not only an image but also a data broadcast as if the broadcast is seen by a digital broadcast receiver at home.

In addition, digital broadcasting receiver provides the function that can do data broadcasting using web browser to remote PC.

If the bandwidth of the Internet network is big enough, the stream received from the digital broadcast receiver can be received from the remote PC as it is and decoded in real time.However, if the broadcast is scrambled, it must be released from the digital broadcast receiver. It is possible.

Therefore, it is impossible to download and show the stream received from the digital broadcasting receiver on the remote PC. Since the original digital stream is copied as it is, it is not in compliance with the copy protection regulations and thus cannot be used in reality.

Also, in case of data broadcasting, it should be expressed as well as decoding it. Although the language describing data broadcasting is written based on HTML, it is not 100% the same. You need to install middleware, which adds extra cost.

In addition, the decoding of MPEG-2 video in real time requires a high-performance CPU or decoder chip, which also requires a separate cost.

Therefore, the present invention is to remotely view the digital broadcast stored in the digital broadcast receiver or broadcast on the digital broadcast receiver using a web browser, simply by connecting to the digital broadcast receiver via the Internet without additional software or hardware additionally installed in the remote PC Made it possible.

Figure 6 shows the components to be provided in the digital broadcast receiver 100 to implement the Internet broadcasting service according to the present invention, both hardware or software can be implemented.

Web server 150 is connected to a web browser from a remote PC to receive the Internet broadcast service.

The AV service unit 110 determines the bandwidth of the network and converts the audio and video data in the MPEG-2 format into a video format having a high compression ratio such as MPEG-4 and Divx, thereby real-time streaming service through the Internet. To provide.

In this way, the remote PC may be of lower quality than the broadcast seen through the actual digital broadcast receiver, but images of the similar quality can be viewed in real time through a web browser.

In addition, streaming service does not violate copy protection because it is impossible to store the original video in the original format or converted format remotely.

The data broadcasting conversion unit 120 uses a language described by xHTML, XML, cascated style sheets (CSS), etc. so that data broadcasting contents can be viewed in a web browser using information obtained by parsing a table related to data broadcasting. Encode it in a markup language such as HTML for complete viewing in a web browser.

In addition, the data broadcasting converter 120 converts an application based on Java, which is a content presentation format, into an applet executable in a web browser.

The data broadcasting synchronization unit 130 is a part for synchronizing the data broadcasting with the video and finds the PCR (Program Clock Reference) information of the MPEG-2 stream and displays the data broadcasting content in synchronization with the video. give.

The broadcast control unit 140 provides a function of controlling the Internet broadcasting service as shown in FIG. 5 so that the control unit can control the menu from the web browser of the PC.

According to the digital broadcast receiver having the above-described configuration, as shown in FIG. 5, even a remote PC accesses the digital broadcast receiver 100 using the Internet using a web browser, and then stores the digital broadcast stored in the digital broadcast receiver or is currently being broadcast. As shown in Fig. 4, the user can see the same interface as using the digital broadcast receiver.

The procedure for providing the Internet broadcasting service in the digital broadcasting receiver is as shown in FIG.

The web server 150 of the digital broadcast receiver 100 monitors the connection of the remote PC and then authenticates the user if there is a connection request from the PC (S702).

After the authentication is successful, when the broadcast information is requested from the PC, the next EPG information or the digital broadcast list stored in the media such as the HDD is displayed on the web browser of the PC (S704).

When the remote user selects a broadcast to be watched from the digital broadcast list, the digital broadcast receiver classifies the stream related to the selected broadcast into a video stream and a data broadcast stream (S706).

In the case of an image-related stream, the audio / video data is obtained by demultiplexing, and the audio / video data is decoded and sent to the AV service unit 110 (S708).

The AV service unit determines the bandwidth of the network and converts it into a video format having a high compression rate such as MPEG-4 or Divx (S710) and provides a streaming service to a remote PC (S712).

In the case of the data broadcasting related stream, the content information is parsed from the related table (S714), and then the data broadcasting converter 120 displays the interface of the web browser as the same interface as that of the digital broadcasting receiver. The descriptive language such as CSS is encoded into a markup language such as HTML, and the application is also converted into an applet that can be executed in a web browser (S716).

The data broadcasting synchronization unit 130 displays the data broadcasting content on a remote PC in synchronization with the video converted and streamed by the AV service unit 110 (S718) (S720).

On the other hand, the broadcast control unit 140 shows the function list to the remote PC so that the user can control the functions related to the above Internet broadcasting service with a web browser (S722) and digitally perform the related work when there is a control request. Send a command to the broadcast receiver.

That is, the broadcast control unit transmits a control request of a remote PC and other components perform related functions related to the control request (S724) to provide an Internet broadcast service.

As described above, according to the present invention, the present invention is not limited to the basic functions of accessing the PC from the remote site provided by the conventional digital broadcast receiver through the Internet to show EPG information and making scheduled recording. Even in the Internet, you can enjoy two-way digital broadcasting by enabling digital broadcasting, including data broadcasting, to be viewed on the same screen interface as a digital broadcasting receiver.

Claims (6)

A digital broadcasting receiver for providing an internet broadcasting service of digital broadcasting; An AV service unit which converts an audio and video data format in MPEG-2 format defined by the digital broadcasting standard into a video format having a high compression rate and provides a real time streaming service; Receiving data broadcasting content information, the descriptive language is converted into a language that can be viewed in the same interface in a web browser, encoded, and the application for executing the content is a data broadcasting conversion unit for converting into an applet executable in a web browser; A data broadcasting synchronization unit for displaying the data broadcasting contents converted by the data broadcasting conversion unit in accordance with the synchronization of the video streamed in real time by the AV service unit; And a broadcast control unit that provides a control function related to an internet broadcasting service of digital broadcasting to a menu of a web browser and transmits a command to be executed in a digital broadcasting receiver when a control request is made through the Internet. The digital broadcast receiver as claimed in claim 1, wherein the AV service unit converts the audio and video data formats into a video format having a high compression ratio by determining a bandwidth of a network. The digital broadcast receiver as claimed in claim 1, wherein the language that can be viewed in the same interface in the web browser is markup language such as HTML or XML. What is claimed is: 1. A method of providing an Internet broadcast service in a digital broadcast receiver connected to a plurality of PCs located at remote locations through the Internet; When the PC receives a broadcast information request by accessing the digital broadcast receiver, displaying a digital broadcast list stored in a medium such as EPG information or an HDD in a digital broadcast receiver in a web browser of the PC; Classifying a stream of the broadcast selected by the digital broadcast receiver into a video related stream and a data broadcast related stream when selecting a broadcast to be watched from the digital broadcast list; Converting the video stream and the data broadcast stream into a web browser environment, respectively, to obtain a video and data broadcast content that is streamed in real time; Displaying the data broadcasting content on a remote PC in synchronization with the video streamed in real time; It shows the function list related to internet broadcasting service to the remote PC, and when there is a control request from the remote PC, it transmits a command to the digital broadcast receiver and performs the related function according to the command in the digital broadcast receiver. Internet broadcasting service providing method of a digital broadcasting receiver. The method of claim 4, wherein the video related stream, Decoding the audio / video data obtained by demultiplexing the stream, and converting the decoded audio / video data into a video having a high compression rate by determining a bandwidth of a network; Internet broadcasting service providing method of a digital broadcast receiver characterized in that the video is a streaming service in real time and displayed on a remote PC. The method of claim 4, wherein the data broadcasting related stream, Parsing content information in a related table of a data broadcasting related stream; Encoding the descriptive language into a markup language so that the interface of the web browser appears to be the same interface as in the digital broadcast receiver, and converting the application into an applet that can be executed in the web browser, Internet broadcasting service providing method of a digital broadcasting receiver, characterized in that the data broadcasting content is displayed on a remote PC.