KR100486102B1 - Multimedia Metadata file Formation, Transmission, Print Method - Google Patents

Abstract

The multimedia metadata file generation, transmission, and output method relates to a method of generating, transmitting, and outputting a metadata file so that learning through multimedia can be efficiently performed. Generating a metadata file to link multimedia objects (pictures, tables, etc.) with the execution of the page; Transmitting the generated metadata file to the learner computer through the service server; The present invention relates to a method of allowing a multimedia object to be interlocked as needed while the learner computer outputs the transmitted metadata file page by page.

Description

How to create, send, and print multimedia metadata files {Multimedia Metadata file Formation, Transmission, Print Method}

The present invention relates to a method for efficiently generating, transmitting, and outputting a multimedia file in an online lecture through wired and wireless Internet, and more particularly, a time block for audio or video data in a side for generating a multimedia data file. By storing and dividing the multimedia object data so that the multimedia object data is operated in conjunction with the progress of time, the learner's computer interprets the multimedia data according to the format generated above and outputs the object data in conjunction with the multimedia data. The present invention relates to a method for generating, transmitting, and outputting a multimedia metadata file for maximizing the effect of using the same.

Personal computers are changing from multitasking devices to education and games. In response to this change, lectures conducted at schools or institutes are stored as video and audio data, and the stored data is reproduced through computer devices, thereby enabling learning using computer multimedia. Moreover, the education on the computer using multimedia is based on the development of the Internet, so that the lecture contents data can be transmitted in real time or downloaded in advance and the learner's computer is implemented as it is. You can take the class you want without regard to it.

In general, as a method of transmitting such multimedia data, lecture contents are digitalized and stored as files such as MPEG1, MPEG2, MPEG4, ASF, WMF, etc., or lecture data is created and downloaded using a word processor. . In addition, a method of delivering in a format composed of an HTML file and a format supported by HTTPD is also used. When the transmission capacity is small, a method in which a still picture is divided into predetermined frames per second using flash and transmitted together with voice data is executed with voice.

However, according to the method of transmitting the multimedia data file by the existing technology, the learner learns by simply watching or listening to the advanced multimedia class, which is compared with the TV lectures activated with the prevalence of TV. You cannot expect a better learning effect. Therefore, in order to utilize multimedia that can be variously implemented on a computer with the uniformity and distinction of TV lecture ceremony, independent multimedia objects (tables, pictures, and other lecture materials) should be implemented along with the progress of lectures. In the existing technology, in order to load another multimedia object (picture, table, figure) or change the multimedia object's property with the progress of the class, the attribute change data of the multimedia object is directly added in the chronological order within the lecture contents data. You have to insert it and run it over time. That is, the data that is executed in sequence according to the progress of time should be stored one by one with the attribute change data of the multimedia object. However, this is because the amount of data to be transmitted is so large that it is unsuitable for data transmission. Therefore, as audio or video data progresses, multimedia objects such as pictures, tables, and figures interlock with each other and it is not sufficient to transmit multimedia data so that they can interact.

The present invention has been made in view of the above, and relates to a method of efficiently reducing and storing massive multimedia data having various objects, transmitting the same, and outputting the same.

Other objects and advantages of the invention will be described below and will be appreciated by the practice of the invention. In addition, the objects and advantages of the present invention can be realized by means and combinations indicated in the claims.

A method for generating a multimedia metadata file according to the present invention for achieving the above object is a method for storing educational multimedia metadata including audio, video, pictures, tables, and multi-function strings. Storing information about multimedia data in the header portion by dividing the header portion into a multimedia data portion composed of at least one or more page units; dividing the multimedia data portion of the page into an object block and a driving block; Storing the multimedia object information in a block; storing the audio and video data (multimedia object file) reproduced in the object file block by dividing the driving block into an object file block and a driving code block; And storing a driving code for driving a multimedia object in the driving code block.

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In addition, the transmission method of the multimedia metadata file according to the present invention,

The service server transmitting to the learner computer a total number of pages containing multimedia data in the multimedia metadata file;

The learner computer receiving the total number of pages sets a data structure in a memory for effective data transmission and reproduction;

Transmitting, by the server, an object block including multimedia object information driven in a current page to the learner computer;

The server includes transmitting a driving block including a driving code for driving the multimedia object to the learner computer.

In addition, the method of outputting a multimedia metadata file according to the present invention,

The learner computer loads an object block containing information of the multimedia object;

Loading a driving block for driving the multimedia object;

And executing the driving code for driving the multimedia object in association with it.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and not all of the technical spirit of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

<How to create a metadata file>

FIG. 1 schematically illustrates that multimedia objects such as text, images, graphics, tables, and charts are linked as a voice or video object is driven as time progresses. That is, when a table or chart according to the contents of a lecture is needed during the playback of an audio or video object, the multimedia object is interlocked and displayed on the screen. will be.

FIG. 2 illustrates a file format for generating a multimedia metadata file so that the multimedia data can be linked with the multimedia data over time. Referring to FIG. 2, the header 40 of the multimedia metadata file includes a file header indicating a starting point of the multimedia metadata file, a version indicating a version of the multimedia metadata file, and an entire multimedia metadata file. Size, size of x, y frame of output device to express multimedia data, total number of pages of lecture contents, length of lecture title, lecture title, length of copyright holder name, name of copyright holder, address or owner of produced file It consists of a web address, a length of the web address, a recording date length, a recording date, one page position, one page length, two page positions, two pages length, ..., background mode.

After the header 40 of the metadata file, multimedia data is divided into pages 42 according to the contents of the lecture. When the background mode of the page 42 in the header 40 is 0, the background color is displayed in front of the page 42. If the information is recorded, and the background mode is not 0, data relating to the background picture is written first in front of the page 42.

Each page 42 is divided into an object block 44 that contains information about the multimedia objects driven on that page 42 and a drive block 46 that drives the interworking of those objects.

The object block 44 is further divided into a general information block 48 and an extended information block 50, and the general information block 48 is a general information block as shown in Table 1 below, HEADER, STYLE, SHOW, and the like. Information, area information, and NAME items.

name size Explanation HEADER 8 byte The part that sets the header version of the object. STYLE 4 byte Part that stores the style number of the objects in Table 2. SHOW 4 byte The part that stores whether the object is initially shown or hidden. Additional Information 16 byte The part that stores the added information of the object. (Location information when displayed on the screen in Mobile) Area Information 20 byte Coordinate information when an object is displayed on the screen. Left, Right, Top, Bottom, and default dot size are each 4 bytes. NAME variable The name of the object is stored. It has various sizes according to the name size.

Table 2 below shows the multimedia object STYLE code stored in the STYLE of the general information block 48.

Object Usage code Explanation Video object For output 9 Object to save and output in MPEFG1-4, ASF, WMF format Speech object For output 17, 0 17 for saving as MP3, 0 for GSM Drawing For output 6 Save as bitmap data and save format is JPG, GIF Multifunction string For output 10 As a text, you can save the size, color, font, attributes, etc. of each part in the text and make a 3D module. Text editor For output 7 Set and save the size, color, font and attributes of the entire text as text. line For output One Sets straight line and diagonal line and sets color, size and type of line. box For output 3 Draw a rectangle and a rounded rectangle. The rectangle outline and fill can be set in various ways. won For output 4 You can draw ellipses and circles and set various outlines and fills. pen For output 8 Set polyline and various types of lines. table For output 8 Character list can be tabulated. button For user queries 13 An object that allows a user to click directly to execute a query. List box User question 15 Multiple text and picture data can be listed in a box to allow the user to select a specific item from the list.

Selection box For user queries 14 Multiple texts and picture data are listed to form a box. When the user clicks on the box, the box is expanded and the list is displayed. Editor box For user queries 16 A box where the user can enter a string. variable For output, for user queries 12 An object that can store and print characters, numbers, areas, and coordinates. Chart For output 18 An object that outputs graphs and charts using a data list. arrow For output 2 Shapes in the form of arrows.

The extended information block 50 is stored after the general information block 48 of each multimedia object as information that appears differently according to the multimedia object. The extended information includes pen color information, font information, display style information, and the like. If extended information is not needed, the extended information block 50 is not attached. Table 3 below illustrates the extended information block 50 for the 'table' of the multimedia objects.

name size Explanation Pen color 4 bytes Outer line color of the table Brush color 4 bytes Table background color Pen width 4 bytes Pen thickness information Shell num 4 bytes The number of cells in the table

The driving block 46 exists as many as the total number of time blocks of one page 42. If the time block is not specified, the driving block 46 is set to 0.5 second. If the progress time of one page 42 is 20 seconds, 40 driving blocks 46 exist.

The drive block 46 is further divided into a block in which audio and video data are stored and a drive code block driven in the time block. The driving code block is composed of unit blocks, and these unit blocks store command codes for driving multimedia objects.

The unit block is composed of Command, Argument size, Argument, and Object Name. Table 4 below shows the description of each part of the unit block.

name size Explanation Command 4 bytes  Drive command number Argument size 4 bytes  Size occupied by arguments passed with the drive command Argument variable  Argument values passed with the run command The object name variable  The name of the driven object

 The driving command number in Table 4 represents a driving code for outputting and changing property of a desired object. In Table 5, the driving code for the multimedia object 'picture' is shown as an example.

Codename Command Explanation CODE 5 Show next scene  Move to the next scene in the current scene and print it. CODE 6 Go to the first scene  Go to the first scene and print. CODE 7 Once continuous output  Output multiple picture scenes in succession. CODE 8 Infinite continuous output  Infinite continuous output of multiple picture scenes. CODE 9 Get area Save position coordinates of current figure to variable.

<Metadata file page output method>

3 is a structure of the learner computer 10 for outputting the metadata file generated as described above. As shown in Fig. 3, the learner computer 10 receives a CPU 10a which performs arithmetic processing, a recorded ROM 10b such as a program, a RAM 10c serving as a work area of the CPU, and an operator's input. An input device 10d such as a keyboard and a mouse, an external storage device 10e such as a hard disk on which various data is recorded, a display device 10f such as a CRT, and a printing device 10g such as a printer.

4 is a flowchart illustrating a method of outputting the metadata file generated as described above by the learner computer 10 page by page 42. Referring to FIG. 4, first, the object block 44 of one page 42 is loaded into the RAM 10c from the metadata file (step S100). At this time, the metadata file may be stored in an external storage device 10e such as a hard disk or a CD-ROM, and may also be transmitted from the service server 20 in real time. When the object block 44 is loaded, the driving block 46 corresponding to one time block is then loaded into the RAM 10c (step S102). If audio or video data exists in the drive block 46, it is outputted to the display device 10f of the learner computer 10 (step S106), and if not, it waits in the time block (step S108). In this process, the drive code 46 is executed by interlocking with the drive code (step S114). As described above, the drive code is stored in the drive block 46 in the unit block format and outputs the multimedia object as it is. Or change its properties and print it out. For example, when audio or video data is output in the first time block and the multimedia object 'table' needs to be executed together, the 'table' content data of the object block 44 loaded in the RAM 10c is output. Run the drive code. If execution is completed from the time block to the last drive code, the process waits until the next drive block 46 is executed (step S116). On the other hand, while executing the current drive block 46 in the display device 10f, the next drive block 46 is loaded into the RAM 10c to prepare for the next drive block 46 to be executed (step S112).

Repeating the process of loading and executing the drive block 46 in sequence, executes the drive code in conjunction with, and loads and executes all the drive block 46 of the current page 42 to finish the output of one page 42 and then Print the data on the page.

<Metadata transmission method>

When the multimedia metadata file is generated as described above, the learner computer 10 downloads the multimedia metadata file and outputs the metadata file according to the page 42 output method described above.

In addition, the learner computer 10 may receive and output the multimedia metadata file in real time. FIG. 5 is a diagram illustrating a network system for the learner computer 10 receiving and outputting the multimedia metadata file in real time. to be. Referring to FIG. 5, the network system includes a network 30, a plurality of learner computers 10 and a service server 20 connected thereto.

The learner computer 10 is a client system for receiving a multimedia metadata file. The learner accesses the service server 20, requests a metadata file, downloads it, and executes the metadata file. Here, the learner computer 10 preferably adopts a personal computer or a notebook computer, but is not necessarily limited thereto, and includes all wired and wireless terminals capable of data communication with the service server 20.

In addition, the learner computer 10 is a typical system component, and loads the web page 24 based on the Uniform Resource Locator (URL) of the service server 20, and interprets the HTML (Hyper-Text Markup Language) code. A web browser program displayed on the monitor, a mail browser program as software for sending and receiving e-mail messages in a Windows environment, and an operating system program (OS) that manages and controls the computer system as a whole. do. It also includes an application program that can execute the multimedia metadata file by the page output method described above.

The service server 20 is a side that secures the multimedia data and transmits the multimedia data generated in the metadata file format to the learner computer 10 as described above. It is responsible for the function of receiving the data, and transmitting a series of multimedia data in the order of page 42.

The network 30 connects the learner computer 10 and the service server 20 to perform data communication with each other, and is used by wired / wireless Internet networks, public telephone networks (PSTNs), mobile communication networks, and the like. Can be. However, hereinafter, for convenience of explanation, the present invention will be described by taking the case where the network 30 is a wired Internet network based on the World Wide Web and the learner computer 10 is a personal computer. . However, it is a matter of course that the present invention is not necessarily limited to these examples.

6 is a diagram briefly showing the functional configuration of the service server 20. Referring to FIG. 6, the service server 20 includes a server engine 22, a plurality of web pages 24, a terminal information management module 26a, a metadata file transfer module 26b, a learner computer DB 28a, It consists of a metadata file DB 28b.

The server engine 22 presents various web pages 24 to the learner computer 10 to access and provides a platform for server-side programs such as the above modules.

Here, the web page 24 is preferably written in HTML format, but may be written in any format as long as it can be read by a computer system.

The terminal information management module 26a is for receiving and storing terminal information of a learner computer connected to the service server 20. For example, when the learner computer 10 is a personal computer connected through a wired communication network. The terminal information is an IP address.

The metadata file transfer module 26b is a program that receives a metadata file transfer request from the learner computer 10 and extracts and transfers the metadata file from the metadata file DB 28b.

The terminal information DB is a database in which terminal information of a learner computer is stored.

The metadata file DB is a database in which a plurality of metadata files generated as described above are stored.

7 is a flowchart illustrating a process of transmitting a metadata file page by page from the service server 20 to the learner computer 10. Referring to FIG. 7, the learner connects to the service server 20 through the network 30 using the learner computer 10 to secure a data link with the service server 20 (step S100). Preferably, the telecommunications company that manages the network 30 transmits a unique IP address indicating the location on the communication network of the learner computer requesting the connection. Here, the learner connects to the URL representing the service server 20, and the service server 20 provides the web page 24 corresponding to the URL to the web browser of the learner computer 10, and the web browser The coded webpage 24 is interpreted and displayed on the monitor of the learner computer 10 (step S300).

The learner computer 10 connected to the service server 20 requests the transmission of the metadata file (step S302). The service server 20 receives the request, and the metadata file transfer module 26b transmits the total number of pages of the metadata file to be transmitted (step S304). The learner computer 10 then changes the total number of pages of the metadata file. Is received, and a data structure corresponding thereto is set in the RAM 10c (step S306). This function holds the entire page 42 of memory in memory for efficient data transfer and smooth playback. The service server 20 again transmits the object block 44 including the multimedia object information driven in the current page 42 (step S308), and the learner computer 10 stores it in a hierarchical structure in the RAM 10c. (Step S310). Next, the service server 20 transmits the driving block 46 including the driving code for driving the multimedia object and the audio or video data of the current page 42 (step S312), and the learner computer 10 The received drive block 46 is stored in a hierarchical structure in the RAM 10c (step S314). When the driving block 46c is transmitted and stored in the RAM 10c, the learner computer 10 outputs one page 42 one by one using the page 42 output method as shown in FIG. 4 (step S316). After the transmission of one page 42, the service server 20 repeats the transmission of the next page 42. At this time, the learner computer 10 proceeds with the method of outputting the page 42. Simultaneously outputting the pages 42 by page facilitates multimedia data reproduction.

As mentioned above, although this invention was demonstrated by the limited embodiment and drawing, this invention is not limited by this, The person of ordinary skill in the art to which this invention belongs, Of course, various modifications and variations are possible within the scope of equivalent claims.

According to the method for generating, transmitting, and outputting a multimedia metadata file of the present invention, a large amount of multimedia data can be represented with a relatively small amount of information data, and accordingly, a transmission speed can be improved and accurate transmission is possible. Do. First of all, multimedia objects such as pictures, tables, and charts are linked together with playback of audio or video data to maximize the visual and auditory effects of education. Can achieve class. Therefore, ultimately, the effect of education using multimedia will be maximized, and the utilization of education using computer will be increased, and it will play a big role as a means of delivering knowledge.

The following drawings, which are attached to this specification, illustrate exemplary embodiments of the present invention, and together with the detailed description of the present invention, serve to further understand the technical spirit of the present invention. It should not be construed as limited to.

1 is a schematic diagram illustrating the interworking of multimedia objects such as text, images, graphics, tables, and charts as voice objects and video objects are driven as time progresses in outputting a page of a multimedia metadata file according to the present invention. It is an illustration.

2 is a diagram illustrating a file format for generation of a multimedia metadata file according to the present invention.

3 is a diagram illustrating a configuration of a learner computer for outputting a multimedia metadata file according to the present invention.

4 is a flowchart illustrating an algorithm for outputting one page of a multimedia metadata file according to the present invention.

5 is a diagram illustrating a configuration of a network system for transmitting a multimedia metadata file according to the present invention.

6 is a diagram illustrating a configuration of a service server for transmitting a multimedia metadata file according to the present invention.

7 is a flowchart illustrating a process of transmitting, by a service server, a multimedia metadata file to a learner computer according to the present invention.

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

10: Learner Computer 20: Service Server

30: network

Claims (8)

A method of generating educational multimedia metadata including audio, video, pictures, tables, and multi-function strings, Dividing the educational multimedia metadata file into a header portion and a multimedia data portion configured in at least one page unit and storing information on the multimedia data in the header portion; Dividing the multimedia data portion of the page into an object block and a driving block to store information of the multimedia object in the object block; Dividing the driving block into an object file block and a driving code block to store audio and video data (multimedia object file) reproduced in the object file block; And Storing a driving code for driving a multimedia object in the driving code block; Multimedia metadata file generation method comprising a. delete delete delete A method of transmitting educational multimedia metadata including audio, video, pictures, tables, and multi-function strings. The service server transmitting to the learner computer a total number of pages containing multimedia data in the multimedia metadata file; The learner computer receiving the total number of pages sets a data structure in a memory for effective data transmission and reproduction; Transmitting, by the server, an object block including multimedia object information driven in a current page to the learner computer; And transmitting, by the server, a driving block including a driving code for driving the multimedia object to a learner computer. delete A method of outputting educational multimedia metadata including audio, video, pictures, tables, and multi-function strings. The learner computer loads an object block containing information of the multimedia object; Loading a driving block for driving the multimedia object; And executing a driving code for driving the multimedia object in association with the multimedia metadata file. delete