KR20030017890A - Method of streaming moving pictures on internet for remote lecture by ftp - Google Patents

Abstract

PURPOSE: A method for the streaming transmission of a remote lecture using the FTP(File Transfer Protocol) is provided to transmit a remote lecture file fast and conveniently on the Internet, and to offer a streaming technology of a conventional protocol without depending on a sort of a platform hardware. CONSTITUTION: After dividing a voice file, a moving image file and a whiteboard file written by a remote lecture making tool into small files, the file uploaded to an FTP site is loaded(S201). An upload software module of a client computer collects the upload FTP site information and appoints an upload directory(S202,S203). After completing the upload to the FTP site, an FTP URL(Uniform Resource Locator), an ID, a password and the file segment information are stored in a database(S205). The client computer of a trainee obtains the file and the file information from the FTP site. The file segment information is obtained from the database and the divided files are downloaded to a local disk. A download module of the client computer recombines and stores the divided files in the local disk while downloading the divided files.

Description

METHOD OF STREAMING MOVING PICTURES ON INTERNET FOR REMOTE LECTURE BY FTP}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video file transmission method on the Internet, and more particularly, to a streaming transmission technology for quickly and efficiently transmitting Internet distance learning works. The present invention discloses a streaming transmission method for transmitting a lecture file produced using an internet distance education system to a client more quickly and efficiently through an Internet medium.

In general, distance lectures refer to a series of lecture production, transmission, and attendance systems that are conducted for educational work between geographically separated instructors and students.

Currently, the simple file upload (up-load) and download (down-load) methods are used as the main transmission methods for remote lectures as data transmission methods for remote lectures that are realized on the Internet. In general, lecture files are multimedia files that are produced together with video, audio, pictures, and other additional information.

Therefore, when a client in a remote location uses a conventional upload / download method to receive and play a lecture file on the Internet, the learner may have to wait too long to take the lecture, resulting in a decrease in class efficiency. In order to solve the above-mentioned problems, a method of streaming and transmitting only video and voice and other information including pictures and / or lines has been suggested to be downloaded and reproduced. Due to this, there is a disadvantage of difficulty in synchronization.

Moreover, according to the prior art, since the size is not as large as video and audio, but also relies on a method of downloading and playing additional information having a huge size, it does not overcome the technical limitations of the conventional download method. In addition, according to the prior art, a separate server must be used to stream a video, and a server that provides a streaming service may operate only on a Microsoft Windows platform, which may result in an operational economic burden.

Accordingly, a first object of the present invention is to provide a method for quickly and efficiently transmitting a remote lecture file on the Internet.

A second object of the present invention is to provide a streaming technology of a general-purpose protocol in addition to the first object, the remote lecture streaming service does not depend on the type of platform hardware.

1 is a diagram showing an overall system configuration for uploading and downloading a remote lecture streaming file using FT in accordance with the present invention.

2 is a diagram illustrating a file registration procedure for a remote lecture streaming method according to the present invention.

3 is a diagram illustrating a method of downloading, recombining, and storing a remote lecture file registered at an FM site according to the present invention.

4 is a diagram illustrating a process of playing a downloaded split file according to the present invention;

5 is a conceptual diagram for uploading a segmented voice file and other files such as a video, a picture, a line, etc., except for a voice file in a file generated by a remote lecture production tool according to the present invention.

6a and 6b respectively show a streaming scheme according to the prior art and a FT multichannel streaming scheme according to the present invention.

7 is a diagram illustrating a configuration of an upload software module for streaming transmission according to the present invention.

8 is a diagram showing the configuration of a streaming transmission download software module according to the present invention;

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

10: Client computer on the instructor side

11, 12, 13: Detailed file

20: FTP server

21, 22, 23: Split file

30: Client computer of student side

40: local disk

41: Manager of the download module

43: Playback Manager

60: file

61: splitter

62: FTP upload module

63: Manager of FTP upload module

64: FTP engine

65: local disk

66: FTP Information

70, 71, 72, 73: Split voice file

80, 81, 82, 83: Other Files

90: streaming server

91, 92, 93: Packet type data

94: client computer

95: buffer

96: player

In order to achieve the above object, the present invention divides the file transmitted from the server into a number of detailed files and uploads them in the FTP (File Transfer Protocol) method, and the registration information of the file (for example, FTP URL, ID , Password, and file partitioning information) are recorded in the database. Then, the client receiving end obtains the file information from the database, connects to the FT server in multiple channels, downloads the divided files, recombines them, and stores them on the local disk.

Subsequently, the client playback stage checks whether the lecture file corresponding to the reference time (for example, 10 seconds) or more is recombined and stored in the local disk, and plays them sequentially. By using the streaming technology according to the present invention, the playback initialization time can be reduced because a large file can be played without waiting for the download to be completed.

As a preferred embodiment according to the present invention, the transmission efficiency can be improved by separately transmitting a file having other information of a voice file and a white board (WB) file, and transmitting it on multiple channels.

1 is a diagram showing the overall system configuration for uploading and downloading a remote lecture streaming file using FT in accordance with the present invention. The client computer 10 of the instructor (tutor) who produced the content of the remote lecture divides the file into a plurality of detailed files 11, 12, and 13 and stores the file on a local disk, and stores the file on the local disk of the client computer. The file name, the split file, and the FTP information are received and uploaded to the FTP site 20.

On the other hand, the client computer 30 of the student side downloads the divided files (21, 22, 23) by referring to the FTP information ID (ID), password, URL, directory, etc. through the FTP engine, the local disk 40 Store in While stored on the local disk 40, the client computer performs playback while receiving files through continuous polling.

2 is a diagram illustrating a file registration procedure for a remote lecture streaming method according to the present invention. The content of the remote lecture consists of a video of the remote lecturer, the voice of the lecturer, and a whiteboard used by the lecturer. Referring to Fig. 2, a voice file, a video, and a whiteboard (other material such as lines, pictures, etc., written by a lecturer) produced by a remote lecture production tool are divided into small files, and then a file to upload to an FTP site is created. Call (step S201). Details of the remote lecture production tool are described in detail in Korean Patent Application No. 10-2001-0017555 filed by the applicant of the present invention.

The upload software module operated on the client computer then collects FTP site information to upload (step S202) and specifies a directory to upload (step S203). Then, when uploading to the FTP site is completed (step S204), the FTP URL, ID (ID) and password, file division information, and the like are recorded in the database (step S205).

3 is a diagram illustrating a method of downloading, recombining, and storing a remote lecture file registered in an FTP site according to the present invention. Referring to FIG. 3, the client computer of the student who wants to receive the remote lecture data obtains the file and file information uploaded from the FTP site (step S301).

Subsequently, file division information is obtained from the database (step S302), and the FTP server is accessed to download the divided file to the local disk (step S303). At this time, as a preferred embodiment, the divided files can be efficiently downloaded by connecting to multiple channels. Meanwhile, the download module operating in the client computer 30 recombines and stores the divided file on the local disk (step S304).

4 is a diagram illustrating a process of playing a downloaded split file according to the present invention. Referring to FIG. 4, the client computer downloads a divided file from an FTP site and performs recombination storage on a local disk. During the joining, the client computer checks whether a file corresponding to a lecture longer than the reference time is prepared (step S401). If ready, the files are reproduced sequentially (step S402). As a result, the present invention can significantly save the time buffered until the entire file is downloaded.

FIG. 5 is a conceptual diagram of uploading a segmented voice file and other files such as a video, picture, line, etc., from a file generated by a remote lecture production tool according to the present invention. Referring to Fig. 5, voice files 70, 71, 72, 73 and other files 80, 81, 82, 83, which are divided from WB files of a remote lecture production tool web tutor according to the present invention, The file is divided and uploaded to the FTP server 20.

6A and 6B are diagrams illustrating a streaming scheme according to the prior art and an FTP multichannel streaming scheme according to the present invention, respectively. Referring to FIG. 6A, in the prior art, when the streaming server 90 transmits packet data 91, 92, and 93, the client computer 94 stores the buffer in the buffer 95, and when the reception is completed, the player ( 96 is based on the method of playback.

On the other hand, in the present invention, as shown in FIG. 6B, a plurality of files divided from the FTP server 20 can be downloaded in an instant through multiple channels, and when a certain amount of split files are down, they are recombined and played back. There is an advantage that can be done immediately.

7 is a diagram illustrating a configuration of an upload software module for streaming transmission according to the present invention. Referring to FIG. 7, the upload module according to the present invention divides the file 60 in the divider 61 and sends it to the local disk 65, and the manager 63 of the FTP upload module 62 receives the FTP information 66. After receiving the divided file name and the divided file, the uploaded file is uploaded to the FTP site 20 through the FTP engine 64.

In a preferred embodiment according to the present invention, the FTP engine 64 is an international standard published by the Internet Engineering Task Force (IETF), a research committee under the Internet Architecture Board (IAB), which is developing Internet standards (STD0009 10, 1985). Mon, RFC0959 October 1985, RFC765 June 1980).

8 is a diagram showing the configuration of a streaming transmission download software module according to the present invention. Referring to FIG. 8, the manager 41 of the download module downloads the divided file by referring to the FTP information 66, ID, password, URL, and directory, through the FTP engine 42, and stores them on the local disk 40. do. At this time, while being stored in the local disk 40, the reproduction manager 43 receives the divided file through continuous polling and reproduces it with the player.

The foregoing has outlined rather broadly the features and technical advantages of the present invention to better understand the claims of the invention which will be described later. Additional features and advantages that make up the claims of the present invention will be described below. It should be appreciated by those skilled in the art that the conception and specific embodiments of the invention disclosed may be readily used as a basis for designing or modifying other structures for carrying out similar purposes to the invention.

In addition, the inventive concepts and embodiments disclosed herein may be used by those skilled in the art as a basis for modifying or designing other structures for carrying out the same purposes of the present invention. In addition, such modifications or altered equivalent structures by those skilled in the art may be variously changed, substituted, and changed without departing from the spirit or scope of the invention described in the claims.

As described above, the present invention has an effect of reducing the playback initialization time by using the remote lecture file split upload method and the multi-channel streaming download method. In addition, two types of information formats such as video, picture, line, and voice file format can be used to transmit data using small channels of multiple channels, thereby improving transmission efficiency.

In addition, since the present invention uses the streaming method using the FTP client / server technology, which is a public Internet protocol supported by most server operating systems, it realizes convenience that does not require a separate server installation. Moreover, the present invention has the effect of maximizing the scope of the server operating platform and minimizing service costs.

Claims (3)

In the method of transmitting a remote lecture content consisting of video data of the lecturer's lecture, whiteboard data containing the lecturer's lecture contents, and voice data of the lecturer to a remote client on the Internet, Dividing the contents of the remote lecture into a plurality of detailed files and uploading the plurality of detailed files and file information to a database of an FTP server; The client multi-channel access to the FTP server to download the plurality of detailed files and file information and store them on a local disk; And Sequentially playing the plurality of detailed files downloaded and stored on the local disk; Remote lecture streaming method comprising a. The method of claim 1, wherein the uploading of the plurality of detailed files and the file information comprises: generating a first format file including the video data and the whiteboard data and a second format file including the voice data. And dividing the first format file and the second format file into a plurality of detailed files, and uploading them to a database of an FTP server. The method of claim 1, wherein the reproducing of the plurality of downloaded detailed files starts playing by combining a selected amount of the plurality of detailed files, and then recombines and reproduces a plurality of subsequent detailed files during the reproducing process. Remote lecture streaming method characterized in that the preparation buffering.