KR20010096362A - Service method of video with real-time processed caption and internet broadcasting system therewith - Google Patents

Abstract

PURPOSE: A method for a moving picture service using a real time caption process, and an Internet broadcasting system using the same are provided to improve an advertising effect along with a broadcasting level, and promote development of Internet contents. CONSTITUTION: A media equipment(11) including a DV camera, a VCR, and a microphone provides a live signal. A live station(10) includes a real time encoder(14) and a router(15). A web server(22) allows a video server(21) and a media player(23) to be mounted thereon. The live station(10) and a web station(20) are connected with an exclusive line(40) or a satellite(51) and satellite transceivers(52,53). The web station(20) and a user media player group(30) are connected through an Internet network(60). A moving picture frame of the live signal is captured and displayed. A caption is inserted in the displayed frame screen, edited, and played along with the live signal. The edited data is encoded into an MPEG file. The MPEG file is temporarily stored through a digital exclusive line or a satellite network in a media server and buffered to be transmitted to the Internet network.

Description

SERVICE METHOD OF VIDEO WITH REAL-TIME PROCESSED CAPTION AND INTERNET BROADCASTING SYSTEM THEREWITH}

The present invention relates to a video service method using a real-time processing caption and to process a separate caption data (caption data), such as subtitles or advertising logo to the video stream transmitted through the Internet network and the Internet broadcasting system using the same.

The Internet has been able to deliver multimedia information, including voice and video, mainly through text information due to the spread of the world wide web (WWW). However, transferring multimedia information is time-consuming because the file size is very large compared to text. To improve this point, streaming technology has emerged. Streaming can be played immediately if only a certain amount of the entire file is transmitted, and the rest of the capacity for the rest of the transmission continues to enable the so-called real-time Internet broadcasting that allows you to watch multimedia information such as voice and video in real time.

Along with streaming, an important word in internet broadcasting is VOD (video on deamand). This is a common way of Internet broadcasting, where pre-compressed video clips are stored on a server, allowing Netizens connected to the Internet to stream at the desired time. Existing over-the-air broadcasting media (TV, radio, etc.) are sent to viewers without any choice except for channel selection, whereas VOD method transcends temporal and spatial scope and selects the program that viewer wants in any place. There is an advantage that it can. However, the VOD method still has a technical problem that is difficult to realize in the TV quality and size.

The main revenue of the broadcast service is advertising, and the rate of return is on securing viewership. Therefore, in addition to the development of various broadcast programs that can increase the viewer rating in the Internet broadcast service, as well as the development of technology that can display the appropriate advertisement in the broadcast stream is required. Since the VOD method compresses the video in advance, it is possible to advertise with the Internet broadcast by editing captions such as subtitles or logos for advertisement and attaching them to the video file. However, in this case, the caption is fixed in one video file, so the caption content cannot be changed to meet various viewer characteristics. VOD video clips are already recorded or recorded in such a state, so there is a limit to increase viewership. The advertising effect is also less.

In order to display various advertisements according to the viewer hierarchy, a technology development capable of capturing a video stream in real time is required. In addition, with the expansion of high-speed communication network facilities such as high-speed digital subscriber line (xDSL), it is possible to live broadcast of the Olympics or Walt Cup as well as live broadcast of news such as over-the-air broadcasting, so that subtitles or advertisement logos necessary for live streams can be inserted in real time. Of course, technology is needed.

In general, the caption editing equipment installed in existing broadcasting stations can be applied to the video stream for internet broadcasting, but real-time caption processing is possible, but the equipment is very expensive and requires a lot of manpower, and it is not economical. Considering the environment, there are technical problems to solve in their application.

Accordingly, an object of the present invention is to use a very simple equipment in consideration of the Internet environment and to process real-time captions with a minimum number of people, thereby real-time processing of caption data such as natural subtitles or advertising logos, as in the existing airwave broadcasting service. It is to provide a video service method using a real-time processing caption and an internet broadcasting system using the same that can enhance the advertising effect and promote the development of Internet contents.

1 is a network configuration of the Internet broadcasting system of the image using the real-time processing caption according to the present invention.

2 is a block diagram of an internet broadcasting system of an image using a real time processing caption according to the present invention;

3 is an operation flowchart of an internet broadcasting system of an image using a real time processing caption according to the present invention;

Explanation of symbols on the main parts of the drawings

10: live station 20: web station

30: user media player group 40: leased line

50: satellite network 60: Internet network

In order to achieve the above object, in the present invention, a live signal provided from a recording device group such as a digital video (DV) camera or a recording device group such as a video cassette recorder (VCR) (scroll), subtitles, chroma keys ( Caption data such as chromakey, CG (computer graphic), logo (logogram), and screen editing can be inserted and edited through equipment that can insert and edit in real-time and video on demand (VOD) forms. An encoding step of encoding an MPEG file, and a temporary storage and buffering step in a media server (stream server) through a digital dedicated line, a high speed xDSL line, and a satellite (satellite internet) to temporarily store the encoded MPEG file. Window on video service method using real time processing caption including broadcasting and advertising contents, and transmitting and receiving steps to viewers as video auxiliary data It was.

In addition, the present invention provides a group of broadcasting equipment for providing a video live signal, a video editor for editing a video live signal, to capture a video frame of a live signal input to the video editor, and to edit and insert a caption on the captured video frame. Caption controller to control the video editor by running the program, real-time encoder to encode live signal from the video editor to MPEG file, and video to transmit video stream while temporarily storing and buffering the MPEG file encoded in real-time encoder. An internet broadcasting system using a real time processing caption including a server and a web server connecting the video server to an internet communication network is implemented.

As described above, the present invention consists of a process of directly editing, encoding, storing, and transmitting a site operating the same. Preferably, a mobile device may be provided in the broadcasting equipment group for live broadcasting such as the Olympics or World Cup, and the live signal may be transmitted and received through a satellite network.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

Figure 1 of the accompanying drawings is a model of the Internet broadcasting system implementing the video service method using a real-time processing caption according to the present invention on the Internet. As shown, the Internet broadcasting system according to the present invention includes a media device 11, a video editor 12, and a caption controller 13, which provide a live signal such as a DV camera or a VCR and a microphone, which are large fixed or mobile broadcast equipment. A web station 20 comprising a live station 10 including a real time encoder 14 and a dedicated line router 15, a web server 22 equipped with a video server 21 and a media player 23, and User media player group 30 is divided.

Here, the live station 10 and the web station 20 are connected by a dedicated line 40 or interconnected by a satellite network 50 by the satellite 51 and the satellite transceivers 52 and 53, and the web station 20 And user media player group 30 are connected via an internet network 60.

In FIG. 1, reference numeral 70 denotes a media player execution screen displayed on a user terminal, 71 denotes a video screen, and 72 and 73 denote subtitles or a logo screen to be inserted in real time according to the present invention.

Next, a block diagram of the Internet broadcasting system according to the present invention will be described with reference to FIG. 2 and an operation flowchart of FIG. 3.

The live signal provided from a group of wired devices such as a DV camera 100, a VTR 110, an audio amplifier 120, a microphone 130, or a broadcast signal received from the satellite receiver 140 is a video editor 160. When inputted to the AV input terminal of the), through the controller 180 driving the editing program 17, the video frame of the live signal is captured and displayed on the screen, caption data such as caption or logo on the displayed video frame screen Insert and edit in real time and play the edited data and send it to the real time encoder 210 as a live signal.

In inserting and editing caption data in real time, one or more combinations of three or more of the site links of scenario text, chroma key processing, CG, video, picture, picture, sound, or scrolling text subtitles can be made at the request of the advertiser. . In addition, the edited data may be stored in a separate storage device 190, and the stored edited data may be called and referred to later.

The real time encoder 210 includes a Windows operating system and Widow media encoding software. The real time encoder 210 encodes a live signal transmitted from the video editor 160 into an MPEG-4 file in real time. The encoded data may be stored in a VOD method as a storage option in a separate ASF format format, and simultaneously compresses and transmits a live signal to the video server 270 through a digital dedicated line connected to the router 280.

The video server 270 is connected to the media web server 240 by a dedicated IP address and transmits a video stream to a plurality of user media playback terminals connected to the Internet network through the web server 240.

Each user terminal in the user media player group may install a Windows media player program and access the web server 240 to watch Internet broadcasts as usual.

Caption data to be inserted into the video stream can be any one or a combination of three or more of the site links of scenario text, chroma key processing, computer graphics, video, photos, pictures, sounds, or flowing (scrolling) text captions created at the request of the advertiser. Such caption data may be constructed and stored in a separate database so that the caption data may be referred to later in the editing process.

In addition, caption data can be attached to the captured part of the video by applying subtitle processing and various character formats and F / X broadcasting techniques in real time to video data encoded as MPEG-4 file, which is the standard of Internet broadcasting. You can also attach it directly to the body and bottom of the video.

Specific examples of the type and location of the caption data and the image assistive medium are as follows. When playing with Microsoft's media player (320 × 240) or (720 × 480), insert the linked letters and flowing (scrolling) letters on the top, bottom, top, bottom, middle, top, and bottom of the front part, or static or logo on the background of the front part. And an image or F / X effect, etc., to attach the article to an encoded video data with an advertisement or video auxiliary medium related to the words repeatedly mentioned in the text, or to encode a video advertisement broadcast on TV in MPEG4 format to display an Internet broadcast advertisement. And export as image aids.

The site in which the method of the present invention is operated may be open and accessible to anyone, and may be operated on a membership basis by inputting personally identifiable information and granting an ID and password.

In the case of a membership system, it is desirable to establish a member data base to store information on the member's disposition and the number of times of broadcasting listening to our site. The contents of captions (advertisements) processed in real time may be managed by making a database in an advertisement DB in which information such as advertisement contents, advertisement frequency, advertiser, advertisement period, etc. is stored in advance with the advertiser.

As described through the above embodiments, the present invention can provide a natural caption or advertisement processing screen like a conventional TV broadcast by attaching a caption processed in real time to a live stream or a VOD-recorded video stream transmitted through Internet broadcast. have. Therefore, various advertisements can be processed and displayed in real time according to broadcast programs, time zones, and viewer hierarchy, thereby maximizing advertisement effect.

In addition, according to the present invention, in real-time broadcasting of the Olympics, World Cup, or news, real-time captions can be broadcast in live broadcast format with subtitles such as foreign languages or narration, so that it is possible to broadcast the level of the existing over-the-air broadcasting. It will also contribute greatly to the development of a wider variety of Internet content, such as providing videos that use caption processing in various promotional programs.

Claims (2)

Captures and displays video frames of live signals, inserts and edits captions such as subtitles and logos on the displayed frame screen, and plays them with the live signals, and encodes the edited data into MPEG files. And temporarily storing and buffering the encoded MPEG file in a media server through a digital dedicated line or satellite network, and transmitting the buffered MPEG file to an internet network. Broadcasting equipment group that provides video live signal, video editor for editing video live signal, program to capture video frame of live signal input to this video editor and to edit and insert caption on captured video frame A caption controller that controls the video editor, a real time encoder that encodes a live signal from the video editor in real time into an MPEG file, a video server that sends a video stream while temporarily storing and buffering the MPEG file encoded in real time, and Internet broadcasting system using a real-time processing caption including a web server connecting the video server to the Internet communication network.