KR100577099B1 - System and method for providing motion picture - Google Patents

Abstract

According to the present invention, the amount of moving picture data to be reproduced for at least 2 hours is compressed according to the MPEG4 method, recorded on a single video CD, and the additional data of the recorded data is stored in the link information so that it can be provided online. A video providing system and method, comprising: a recording medium storing data compressed according to a video compression method and link information for providing information related to the data; A reproducing apparatus for reproducing and outputting data recorded on the recording medium in response to a user's request, and outputting additional information provided online after making an online connection using the link information; And a main server configured to make an online connection with the playback device in response to an online connection request of the playback device, and to transmit the additional information to the playback device in response to a request of the user.

Description

Video delivery system and method {SYSTEM AND METHOD FOR PROVIDING MOTION PICTURE}

1 is a block diagram for explaining the configuration of a video providing system according to the present invention;

2 illustrates a digital data format for video transmission;

3 illustrates a digital data format compressed and formed according to the present invention.

*** Explanation of main parts of drawing ***

100: recording medium

200: playback device

300: main server

The present invention relates to a video providing system and method.

More specifically, the amount of moving picture data to be played back for at least two hours is compressed according to the MPEG4 method and recorded on one video CD, and the additional data of the recorded data is stored in link information so that it can be provided online. The present invention relates to a video providing system and method.

Currently, moving picture video is compressed and used by a moving picture expert group (MPEG) method. In particular, MPEG1 is used as a format for a video compact disc (VCD), and MPEG2 is used for broadcasting and digital video disc (DVD; Digital). Versatile Disk) is used as the standard format for production.

At this time, MPEG1 has a transmission compression ratio of 1.15 megabits per second (MBPS), a compression size of 10 to 17 MB per minute, and audio compression of the layer 2 (layer 2). In the case of MPEG2, the transmission compression ratio is 2-15 MBPS, the compression size is 20-30 MB, and the audio compression is AC3.

In the case of MPEG4, unlike MPEG1 and MPEG2, the transmission compression ratio is not limited. The compression size is 10 MB per minute and the audio compression is MP3. The conventional video compact disc (VCD) production technology is based on the MPEG1 method, employs the NTSC system having a 320x240 aspect ratio, and a compression rate of 1.15 MBPS.

Therefore, it is not possible to record data such as moving pictures or concerts that are to be reproduced for two hours or more on one CD. Therefore, it is common to record and store at least two CDs divided up and down.

In addition, when playing video data encoded and compressed according to MPEG1 and MPEG2 methods, a screen spread phenomenon is prominent, such that a clear screen is not provided to users.

Therefore, there is a demand for video data that is encoded and compressed according to a compression method that can provide clear picture quality.

On the other hand, VOD (Video On Demand) broadcasting, which is provided online through the Internet, provides video data processed by MPEG4 method, but the screen is degraded according to the transmission speed of the data communication network, or the video data There was a problem that the screen is frequently interrupted while the screen is outputted because it is not downloaded normally and does not support the normal screen output speed.

Accordingly, the present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to compress a video data of an amount which should be played back for at least 2 hours according to the MPEG4 method and record it on one video CD. In addition, the additional data of the recorded data is to provide a video providing system and method for storing the link information to be provided online.

One embodiment of the present invention for achieving the above object, a recording medium for storing the data compressed according to the video compression method and the link information for providing information associated with the data; A reproducing apparatus for reproducing and outputting data recorded on the recording medium in response to a user's request, and outputting additional information provided online after making an online connection using the link information; And a main server configured to make an online connection with the playback device in response to an online connection request of the playback device, and to transmit the additional information to the playback device in response to a request of the user. As a system, the above-mentioned subject is solved.

The data stored in the recording medium may be classified into an audio and video signal to generate a VOB file according to MPEG format, and may be divided into I frames, B frames, and P frames forming an image block of the VOB file. Extracts only I frames, extracts only I frames except the first I frame and the last I frame among the extracted I frames, deletes the extracted I frames, deletes the first I frames and the last I frames, and a plurality of B frames; A video providing system characterized by being data formed by compressing a plurality of P frames, which solves the above-mentioned problems.

In addition, the data is compressed and processed so that the compression transmission rate is changed in accordance with the playback time of the video, the above-mentioned problem is solved.

In addition, the data is a moving picture providing system, characterized in that the movie or learning data, the above-mentioned problem is solved.

In addition, another embodiment of the present invention, recording the compressed data according to the moving picture compression method and the link information for providing information associated with the data on a recording medium; Reproducing and outputting data recorded on the recording medium in response to a user's request, and outputting additional information provided online when an online connection is made using the link information; And transmitting the additional information to the playback apparatus in response to a request of the user after making an online connection with the playback apparatus in response to an online access request of the playback apparatus. As a result, the above-mentioned problem is solved.

The data stored in the recording medium may be classified into an audio and video signal to generate a VOB file according to MPEG format, and may be divided into I frames, B frames, and P frames forming an image block of the VOB file. Extracts only I frames, extracts only I frames except the first I frame and the last I frame among the extracted I frames, deletes the extracted I frames, deletes the first I frames and the last I frames, and a plurality of B frames; A video providing method comprising data formed by compressing a plurality of P frames, which solves the above-mentioned problems.

In addition, the data is compressed and processed so that the compression transmission rate is changed in accordance with the playback time of the video, the above-described problem is solved.

In addition, the data is a moving picture providing method, characterized in that the movie or learning data, the above-mentioned problem is solved.

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

1 is a block diagram for explaining the configuration of a video providing system according to the present invention, Figure 2 is a view for explaining the configuration of the playback apparatus applied to FIG.

As shown in FIG. 1, a recording medium 100 storing data compressed according to a moving picture compression method and link information for providing information related to the data, and on the recording medium in response to a user's request. A reproducing apparatus 200 for reproducing and outputting recorded data, making an online connection using the link information, and outputting additional information provided online, and reproducing in response to an online connection request of the reproducing apparatus 200; The main server 300 transmits the additional information to the playback apparatus 200 in response to a user's request after establishing an online connection with the apparatus 200.

The data stored in the recording medium 100 may be classified into an audio and video signal to generate a VOB file according to the MPEG format, and include an I frame, a B frame, and an image block of the VOB file. Extract only I frames from a P frame, extract only I frames except the first I frame and the last I frame among the extracted I frames, delete the extracted I frames, and delete the first I frame and the last I frame Data formed by compressing B frames and a plurality of P frames.

In addition, the data is compressed and processed so that the compression rate changes according to the playback time of the video.

In addition, the data includes movie or learning data.

Here, if the compression method of the moving picture data is described in more detail, the moving picture data stream is composed of a plurality of picture blocks as shown in Fig. 2, and each picture block is connected to an I frame and the I frame. It consists of a B frame and a P frame.

That is, the I frame is a frame for processing image compressed data through spatial transformation without performing motion compensation, and the P frame is a frame for performing image compression through motion compensation using a forward motion vector. The B frame is a frame for performing more efficient image compression by selectively using a forward motion vector and a backward motion vector.

On the other hand, when converting analog video to 4: 2: 2 standard format MPEG digital signal, a general movie that is played for 150 minutes and a video data file of 5 to 6 GB in size are generally stored on a DVD-R. .

However, after extracting I frames from the video data stream, separating the I frame, the B frame, and the P frame from each other, excepting only the first I frame and the last I frame among a plurality of I frames, the I frame is deleted. When the first I frame, the last I frame, and the B frame and the P frame are compressed (see FIG. 3), the 5-6 GB video MPEG file is secondarily compressed at a ratio of about 10: 1 to 600-700. You can create a compressed file with a file size of MB, which can be stored on a single video CD (VCD).

As described above, the compression rate can be improved by removing all the I frames existing in the first half of each picture block except the first I frame and the last I frame.

Referring to the operation of the video providing system according to the present invention configured as described above are as follows.

First, when the user mounts the recording medium 100 compressed according to the MPEG-4 method on the deck of the playback device 200 and plays the video, the playback device 200 records and stores the recorded video on the recording medium 100. Play the data.

In this case, when the video data is movie data, link information for establishing an online connection to the main server 300 that provides a site providing detailed information about a place where the background of the movie is located, and details about each actor. It has links to elements that can provide additional information about the movie, such as making online access to the site that provides the information, so that users can easily receive information on questions they have while watching the movie. To help.

On the other hand, after the movie is finished, it is possible to make an online connection to a site providing various information about the movie, so that the NG scene or the recording medium 100 that could not be recorded on the recording medium 100. It is possible to be provided with information such as an event occurring after the production, for example, a prize at a certain film festival.

If the video data is learning data, the playback apparatus 200 outputs the learning data on the screen while reproducing the learning data, and the user can use the learning data to learn while using the learning data. It is possible to make an online connection to the main server 300, which provides information, and so on. If a word or learning content is reproduced or outputted while learning using the learning data, various sites are searched to find detailed information about the above. There was no need to do it. In other words, when the word is clicked, a dictionary function or an online connection can be automatically made to the main server 300 providing the dictionary, so that the desired information can be known in a short time without any extra effort.
In the image data having only the first I frame and the last I frame as described above, the I frames are frames used for random access of data, and even if some I frames are removed, the frames do not affect the playback of the video. Thus, even if only the most recent I frame and the last I frame are compressed as in the present invention, there is no effect on the reproduction of the image.

Accordingly, the present invention allows the user to receive a large amount of moving image data using only one CD by compressing the moving amount of moving image data to be reproduced for at least 2 hours or more according to the MPEG4 method in one video CD. To achieve the effect.

In addition, the present invention further stores the video data that can not be recorded all on the CD, or the link information that can be provided to the relevant data that can occur after recording the video data, so that the user can not only online video CD but also online Achieve the effect of receiving additional information.

The present invention is not limited only to the above embodiments, and it is apparent that many modifications are possible by those skilled in the art within the technical spirit of the present invention.

Claims (8)

delete A recording medium storing data compressed according to a moving picture compression method and link information for providing information related to the data; A reproducing apparatus for reproducing and outputting data recorded on the recording medium in response to a user's request, and outputting additional information provided online after making an online connection using the link information; And A main server configured to make an online connection with the playback device in response to an online connection request of the playback device and to transmit the additional information to the playback device in response to a user request; The data stored in the recording medium classifies analog video signals into audio and video signals to generate a VOB file according to MPEG format, and only I frames in I frames, B frames, and P frames forming an image block of the VOB file. Extract only I frames excluding the first I frame and the last I frame among the extracted I frames, and then delete the extracted I frames, and extract the first I and last I frames, a plurality of B frames, and a plurality of P frames. The video providing system, characterized in that the data formed by compressing. The method of claim 2, wherein the data, A video providing system, characterized in that the compression and the compression rate is changed according to the playback time of the video. The method of claim 2 or 3, wherein the data, Video providing system, characterized in that the movie or learning data. delete Recording the compressed data according to a moving picture compression method and link information for providing information related to the data on a recording medium; Reproducing and outputting data recorded on the recording medium in response to a user's request, making an online connection using the link information, and outputting additional information provided online; And And in response to the online connection request of the playback device, making an online connection with the playback device, and transmitting the additional information to the playback device in response to a request of the user. The data stored in the recording medium classifies analog video signals into audio and video signals to generate a VOB file according to MPEG format, and only I frames in I frames, B frames, and P frames forming an image block of the VOB file. Extract only I frames excluding the first I frame and the last I frame among the extracted I frames, and then delete the extracted I frames, and extract the first I and last I frames, a plurality of B frames, and a plurality of P frames. The video providing method characterized in that the data formed by compressing. The method of claim 6, wherein the data, And compressing and processing the compressed data rate according to a play time of the video. The method of claim 6 or 7, wherein the data, Video providing method characterized in that the movie or learning data.

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