KR20010088974A - Method and system for processing moving picture data based upon vector graphic on wireless network - Google Patents

Abstract

PURPOSE: A method and a system for processing a moving picture data based on a vector graphic through a wireless network are provided to transmit high-speed data and service the moving picture with excellent picture quality by converting and optimizing the moving picture based on the vector graphic to be suitable for wireless Internet environment and transmitting the moving picture to a wireless terminal device of a user. CONSTITUTION: If an inputted tag is not an end tag, it is confirmed whether the inputted tag is a showFrame tag used when converted into wireless data(s16). If the inputted tag is the showFrame tag, it is confirmed whether a corresponding frame is composed as only PlaceObject tags(s20). If the corresponding frame is composed as only the PlaceObject tags, a flash moving picture is registered in a "between frame list"(s22). If a frame is not deleted, a varying quantity to an active characteristic between successive frames is calculated, and the calculated varying quantity is applied to a frame deletion rule(s36). When the varying quantity is smaller than a reference varying quantity, a previous frame or a rear frame is deleted(s38). If the inputted tag is not showFrame tag, it is checked whether the inputted tag is a definition tag(s18). If the inputted tag is not the definition tag, the inputted tag is stored(s42). If the inputted tag is the definition tag, it is discriminated whether a tag is a tag unnecessary for transmitting the wireless data. If a tag is the tag unnecessary for transmitting the wireless data, the tag is deleted(s26). If the tag is not deleted, it is discriminated whether the tag is a shape tag(s28). If the tag is the shape tag, curve data are converted into a linear data and a plurality of converted linear data are combined to optimize the shape data(s32), and a corresponding tag and tag data are stored(s42).

Description

TECHNICAL AND SYSTEM FOR PROCESSING MOVING PICTURE DATA BASED UPON VECTOR GRAPHIC ON WIRELESS NETWORK}

The present invention relates to a method and system for reducing or converting moving image data to facilitate processing of vector graphic based moving image data through a wireless terminal device.

By the early 1990s, only a few people knew how to use a computer, and among those who knew how to use a computer, only a few could use the Internet as a means of communication. The time has come. As such, one of the biggest reasons why the use of the Internet can be popularized is the practical use of the World Wide Web (WWW).

Recently, services such as e-commerce, cyber stock trading, electronic mail (e-mail), various content providing businesses such as images or videos have been provided based on the Internet using the web. . As a result, Internet services are emerging as the most important business as users can now easily perform tasks that were previously physically performed through the Internet.

In general, the Internet refers to TCP / IP (Transmission Control Protocol) between a plurality of unit networks divided by Internet Protocol (IP) addresses and a plurality of hosts having individual IP addresses provided in each unit network. Based on / Internet Protocol, it is a data communication network that can perform data communication using a local area network (LAN) or a public switched telephone network (PSTN). In this case, the hosts mean that a computer or a computer having a communication modem is connected to a telephone, and communication is possible only with a unique IP address assigned to each host. Through these networks, users search for information through the Internet, called the "sea of information," and try to extract the desired information and make it their own information.

Recently, as well as applications that process static image data such as photographs such as Photoshop or Paint Shop, GIF animator or Macromedia Flash and Applications that can produce the same video are in the limelight.

In particular, with the appearance of various characters, video data representing the character's movement has gained great response among many Netizens. In addition, as the data transmission speed of a network and the data processing speed of a computer system connected to a network increase, the transmission of image data, such as a movie or an animation, is greatly increasing.

Figure 1 shows a general network diagram for the Internet connection.

Referring to FIG. 1, a conventional network for accessing the Internet is connected to each other such that a data transmission is possible between a user's Internet terminal device 10 and a web server 18 or an ISP (Internet Service Provider) 20. 16) is provided. The internet terminal device 10 is provided with a command input by a user to obtain desired information. The wired network 12 receives a command and an IP address of a user from the Internet terminal device 10 and connects with another terminal device. The gateway 14 receives a command and an IP address from the wired network 12 and converts the data into data used in the Internet. The Internet 16 arranges connections between different networks to carry out commands sent from the gateway 14. The web server 18 receives a command from the Internet 16 and provides Web information. The ISP 20 receives a command from the Internet 16 and connects with another network. Intranet 22 is connected to the Internet 16 via ISP 20 and may itself have a database 24.

However, there is a problem in that the mobility of the terminal device cannot be secured in the network for the Internet connection configured as described above. However, thanks to the recent rapid development of the telecommunications and electronics industry, various mobile hosts combined with portable computers and mobile terminals use the existing IP address and provide Internet access service while moving away from their fixed network location. Mobile Internet technology has been proposed. For example, a wireless network using a portable communication system such as a personal digital assistant (PDA), a cellular phone, or an international mobile telecommunication 2000 (IMT2000) becomes possible, so that a user can use the portable communication system to access the wireless Internet on the go. It became available.

2 is a block diagram of a conventional mobile Internet service system using a wireless network.

Referring to FIG. 2, the conventional mobile Internet service system receives a command through an external command input device such as a keypad or a touch screen of the wireless Internet terminal device 30, and forms a radio frequency (RF) signal suitable for data service. Convert to and send. The base station apparatus 32 receives a command and demodulates the RF signal transmitted from the wireless Internet terminal apparatus 30. The wireless network 34 outputs using a protocol for Internet service together with an ID number of the wireless Internet terminal device which transmitted the command. The gateway 36 receives a protocol signal for Internet service from the wireless network 34, converts the protocol signal into a protocol such as TCP / IP suitable for Internet connection, and outputs the converted protocol signal. The Internet 38 enables connection with other networks for operations corresponding to instructions from the gateway 36. The web server 40 receives a command from the Internet 38 and provides web information. The mobile Internet service provider 42 receives a command from the Internet 38 and connects to another network.

The operation of the mobile Internet service system having such a structure is as follows. When a user inputs a command through an external command input device such as a keypad or a touch screen, the input command is a command of a type suitable for a protocol between the wireless network 34 and the gateway 36 in the wireless Internet terminal device 30. Is converted to. The converted command is converted into an RF signal that can be transmitted to a wireless channel through spreading or modulation, and transmitted to the base station apparatus 32. The base station apparatus 32 receives and demodulates an RF signal transmitted from the wireless internet terminal apparatus 30 and transmits the demodulated signal to the wireless network 34. Subsequently, the wireless network 34 converts the RF signal into a protocol language for Internet service in the wireless network, for example, a handheld device markup language (HDML), a wireless markup language (WML), or a mobility hyper text markup language (mHTML). Output to (36). The gateway 36 receiving the input converts the command input by the user into a TCP / IP form used in the Internet, and generates an Internet protocol address used in the Internet using the ID number of the wireless Internet terminal device 30. (38). Subsequently, when a user inputs a command to obtain desired information, the web server 40 is accessed using HTML, which is a protocol language supporting web services on the Internet 38. When a user desires information on another network and inputs a command for it, the Internet 38 uses TCP / IP to connect to the mobile Internet service provider 42 to obtain information from a database connected thereto.

In contrast, the information transmission from the Internet 38 to the wireless Internet terminal device 30 is performed in the reverse order of the method described above. First, the Internet 38 obtains information from the web server 40 or the mobile Internet service provider 42, and then transmits the information to the gateway 36. The gateway 36 receiving the information from the Internet 38 transmits the corresponding information to the wireless network 34 using a protocol using HDML, mHTML, or WML. The wireless network 34 transmits information to the wireless Internet terminal device 30 corresponding to the Internet protocol address through the base station device 32.

Recently, many efforts have been made to transmit various text data, image data, sound data, color data, or video data through the wireless Internet. However, since wireless communication devices such as PDAs or mobile phones have much lower performance than PCs, video transmission and processing services are not well performed, and limited video services using continuous bitmap images are provided. I'm losing.

3 is a block diagram of a conventional wireless video service system using a bitmap image.

Referring to FIG. 3, a conventional wireless video service system includes a WAP gateway 60 called a WAP (Wireless Application Protocol) proxy between a wireless terminal device 70 corresponding to a client and a web server 50. I put it. The WAP gateway 60 plays a role of converting a signal using WAP and a signal using Hyper Text Transfer Protocol (HTTP) in between. That is, the Internet service request signal transmitted from the wireless terminal device 70 passes through the WAP gateway 60, and the WAP gateway 60 transmits the service request signal provided by using the WAP to the web server 50 through the Internet. To pass. Subsequently, the WAP gateway 60 converts the response signal from the web server 50 into a signal by the WAP and transmits the signal to the corresponding wireless terminal device 70.

Here, the wireless terminal device 70 generates and transmits a service request signal by using a WAP browser 74 made of a language such as WML (Wireless Markup Language), WML Script, or XML. Receives a response signal accordingly. In the process of transmitting a service request signal or response signal from the wireless terminal device 70 to the WAP gateway 60, WSP (Wireless Session Protocol) / WTP (Wireless Transaction Protocol) will be used. Accordingly, the WAP gateway 60 converts the WTP signal transmitted from the wireless terminal device 70 into an HTTP signal and converts the HTTP signal transmitted from the web server 50 into a WTP signal ( 62). It may also include a protocol adapter 66 for compatibility between TCP / IP and WAP. In particular, the WAP gateway 60 may include a bitmap image conversion device 64 for converting a continuous bitmap image provided by HTTP from the web server 50 into a data format supported by the wireless Internet. The image data converted through the bitmap image conversion device 64 is transmitted from the WAP gateway 60 to the wireless terminal device 70 via WTP. The wireless terminal device 70 continuously transmits the bitmap image transmitted from the WAP gateway 60 to the WAP browser 74, so that the user can display the video data through the display unit 76 provided in the wireless terminal device 70. You can check it.

To this end, the web server 50 includes a content server 54 including various multimedia data and an HTTP communication device 52 for transmitting the continuous bitmap image data to the WAP gateway 60 using HTTP. .

However, a video composed of bitmap images has a large capacity, and since the image quality is lower than the capacity, the wireless transmission by the wireless terminal device is difficult to properly perform. That is, since the size of moving image data to be transmitted is too large for the data transmission rate, effective data transmission cannot be achieved. In addition, the video of the bitmap image has a problem that does not support the interaction between users using the wireless terminal device.

The present invention is to solve the above problems, by converting and optimizing the video data based on the vector graphics to suit the wireless Internet environment, and transmit it to the user's wireless terminal device to enable high-speed data transmission, excellent image quality The purpose of the present invention is to provide a video data processing method and system that can service a video.

1 is a general network diagram for Internet access.

2 is a block diagram of a conventional mobile Internet service system using a wireless network.

3 is a block diagram of a conventional wireless video service system using a bitmap image.

4 is a diagram illustrating a definition tag of a macromedia flash.

5A and 5B are diagrams illustrating a process of converting curved data included in a video into linear data in a method and system for processing video data based on vector graphics according to an exemplary embodiment of the present invention.

6A and 6B illustrate a process of converting a mouse event into a button event of a wireless terminal device in a method and system for processing video data based on vector graphics according to an exemplary embodiment of the present invention.

7 illustrates a control tag of a macromedia flash.

8 is a flowchart of an offline conversion process of converting flash video data into wireless data suitable for a wireless terminal device in a vector graphic based video data processing method according to an embodiment of the present invention.

9 is a flowchart of an on-line conversion process of converting wireless data to meet the specifications of a wireless terminal device in a vector graphic based video data processing method according to an embodiment of the present invention.

10 is a block diagram of a vector graphics-based video data processing system according to an embodiment of the present invention.

11 is a flowchart illustrating a video data processing process in a web server in the vector graphic-based video data processing method according to an embodiment of the present invention.

12 is a flowchart illustrating a video data processing process in a WAP gateway in a vector graphic based video data processing method according to an embodiment of the present invention.

13 is a flowchart illustrating a video data processing process in a wireless terminal device of a user in a vector graphic based video data processing method according to an exemplary embodiment of the present invention.

(Name of the code for the main part of the drawing)

30: wireless terminal device 32: base station device

34: wireless network 36: gateway

38: Internet 40: Web Server

42: Internet service provider

110: web server 112: wired protocol communication device

114: flash video offline converter

116: content server 120: WAP gateway

122: wired / wireless protocol conversion device

124: flash video on / off line converter

126: protocol adapter 130: wireless terminal device

132: wireless protocol communication device

134: flash video online conversion unit

136: WAP Browser 138: Display

In order to achieve the above object, the vector graphics-based video data processing method of the present invention comprises extracting a Bezier curve from a vector graphics-based video, by connecting at least three control points defining the Bezier curve Generating first and second straight lines in contact with a Bezier curve; connecting a midpoint of the first and second straight lines to generate a third straight line in contact with a Bezier curve; Dividing a Bezier curve into two Bezier curves based on a contact point with a straight line, the intersection point of the first and second straight lines, and the distance D between the contacts on the Bezier curve by a third straight line Recursively repeating the curve dividing process for the divided Bezier curves when the distance is greater than the reference distance, and when the distance D is smaller than the reference distance, for each divided Bezier curve. Even replacing the corresponding Bezier curve using two straight lines connecting the control points to the curve.

The vector graphic-based video may be a video produced by Macromedia Flash.

The vector graphic-based video data processing method includes the steps of: forming a triangle with two straight lines replacing the divided Bezier curves, and forming a triangle with the two straight lines as the base line connecting the contact points in contact with the Bezier curves; When the size of the two inner angles belonging to the base side is less than the reference angle, the method may further include replacing the two straight lines with a straight line including the base side.

The reference angle may have a size between 0 and π radians.

In addition, the vector graphic-based event processing method of the present invention comprises the steps of extracting the position information of the mouse and the input information of the mouse included in the video based on the vector graphics, and displayed on the screen according to the position of the mouse and the input of the mouse button Extracting a plurality of state information of a video control button set to control a moving picture; and, among a plurality of states of the video control button, a predetermined direction button and an input button for controlling a video in a wireless terminal device. Deleting the corresponding state information, recognizing the position of the video control button displayed on the screen of the wireless terminal device, configuring a button network interconnected with the video control button, and directional button and input of the wireless terminal device. Receiving input of at least one button operation among the buttons; And executing a video control button function at a corresponding position on the button network according to a button operation of at least one of a direction button and an input button.

The flash button state that does not correspond to the direction button and the input button of the wireless terminal device includes an UP state that defines the operation of the flash button when the left button of the mouse is released, and the flash button when the left button of the mouse is pressed. The DOWN state defining the operation, the OVER state defining the operation of the flash button when the mouse pointer is over the flash button, and the flash button for the operation of the UP state, the DOWN state and the OVER state according to the movement of the mouse. Among the HIT AREA states defining the radius of action, it may be an UP state or a HIT AREA state.

In addition, the vector graphics-based frame data processing method of the present invention comprises the steps of extracting a plurality of frame information constituting a video, calculating the motion characteristic value for each frame, and the motion characteristic value for two consecutive frames The method may include sequentially calculating a change amount of, and deleting one frame of two frames with respect to a frame in which the change amount of an operation characteristic value is equal to or less than a reference change amount.

The calculating of an operation characteristic value for the frame may include constructing a matrix using the screen information constituting the frame as a component, and calculating a determinant of the matrix.

The screen information constituting the frame may include at least one of rotation information, scale information, and movement information.

In addition, the vector graphics-based video data processing method of the present invention comprises the steps of extracting information about the components constituting the video, and extracting a frame display component for displaying a character on the screen from the components constituting the video And deleting only the frame display component when only the space arrangement component for arranging a character in space is included in the frame display component.

The vector graphic-based video data processing method may further include deleting a background music component defining background music from the components constituting the video.

The vector graphic-based video data processing method may further include converting curved data constituting the video into linear data.

The vector graphic-based video data processing method may further include converting a mouse event included in the video into a button event of the wireless terminal device.

The vector graphic-based video data processing method may further include deleting one frame among adjacent frames that is similar to each other for a plurality of frames constituting the video.

The deleting of one frame among the similar adjacent frames may include extracting a plurality of frame information constituting a video, calculating an operation characteristic value for each frame, and an operation characteristic value for two consecutive frames. The method may include sequentially calculating a change amount of, and deleting one frame of two frames with respect to a frame in which the change amount of an operation characteristic value is equal to or less than a reference change amount.

The deleting of the component or frame may include registering a component or frame to be deleted in a deletion list, and selecting and deleting the component and the frame registered in the deletion list at regular intervals.

The vector graphic-based video data processing method may further include recording a result of converting video data into header information of the video data.

In addition, the method for processing macromedia flash video data of the present invention comprises the steps of extracting information about a tag constituting a flash video, and if only the PlaceObject tag is included in the ShowFrame tag constituting a flash video, the ShowFrame tag In the step of deleting, In the shape tag constituting the flash video, Converting the curve data contained in the shape tag to straight data, Button button constituting the flash video, Mouse events in the button of the wireless terminal device And converting it into an event.

The shape tag may include at least one of a DefineShape, DefineShape2, DefineShape3, and DefineMorphShape tag.

The button tag may include at least one of a DefineButton, DefineButton2, DefineButtonCxform, and DefineButtonSound tags.

In addition, the method for processing video data based on vector graphics of the present invention includes the steps of: collecting information about the specification of the wireless terminal device; extracting a component constituting the video to be transmitted to the wireless terminal device; In the case where at least one component of color information, font information, image information, and sound information is included in the wireless terminal device, at least one of the color information, font information, image information, and sound information is received. Determining whether it corresponds to a specification; and when the at least one of the color information, font information, image information, and sound information does not correspond to the specification of the wireless terminal device, the corresponding color information, font information, and image. Change at least one of the information and the sound information to correspond to the specifications of the wireless terminal device. It may include the step of illuminating.

The information about the specification of the wireless terminal device may include at least one of information about a size of a display screen, a color color that can be expressed, and an output sound form.

In addition, the method for processing macromedia flash video data of the present invention comprises the steps of: collecting information about the specification of the wireless terminal device; extracting a tag constituting a flash video to be transmitted to the wireless terminal device; Receiving flash video data with respect to at least one of the shape tag, font tag, bitmap tag, and sound tag when at least one tag of the shape tag, font tag, bitmap tag, and sound tag is included in the constituting tag Determining whether it corresponds to a specification of a wireless terminal device; and when the at least one of the shape tag, font tag, bitmap tag, and sound tag does not correspond to the specification of the wireless terminal device, the corresponding shape Tag, font tag, bitmap tag and sound tag at least one of the wireless terminal Value may include the step of conversion to the specifications on.

The font tag may include at least one of DefineFont, DefineFont2, and DefineFontInfo tags.

The bitmap tag may include at least one of DefineBits, DefineBitsJPEG2, DefineJPEG3, DefineBitsLossless, DefineBitsLossless2, and JPEGTables tags.

The sound tag may include at least one of DefineSound, SoundStreamBlock, SoundStreamHead, and SoundStreamHead2 tags.

According to another aspect of the present invention, there is provided a method of processing video data based on vector graphics, receiving video data based on vector graphics, extracting conversion information of video data from header information of the video, and converting the video data based on the conversion information. The method may include performing an offline conversion process for wireless transmission on the video data or an online conversion process according to a specification of the wireless terminal device.

The conversion information may be information indicating an offline conversion or an online conversion result of the moving image data.

In addition, the method for processing macromedia flash video data of the present invention comprises the steps of receiving flash video data, extracting the conversion information of the flash video data from the header information of the flash video, according to the conversion information, flash The method may include performing an offline conversion process for wireless transmission or an online conversion process according to a specification of a wireless terminal device with respect to video data.

In addition, the vector graphic-based video data processing system of the present invention is connected to a gateway for transmitting vector graphic-based video data to a wireless terminal device, and converts the vector graphic-based video data for use in a wireless terminal device. A system comprising: a database storing video data based on vector graphics, an offline converter extracting vector graphic based video data from the database, and performing an offline conversion for wireless transmission; And a wired protocol communication device configured to transmit the converted vector graphic based video data to a gateway through a wired network, wherein the offline converting unit includes a frame for displaying a character on a screen among components constituting the video. If it included and configured to extract the components during component extracting section, only the spacing elements to place in the space character in the frame displayed in the component, may include a control component to delete the frame display component.

The offline converter may further include a curve data converter for converting the curved data constituting the video into linear data.

The curve data converter may include a curve data extractor configured to extract Bezier curve data constituting a video based on a vector graphic, and at least three control points defining the Bezier curve to contact the Bezier curve. An approximate straight line generation unit connecting a second straight line with a midpoint of the first and second straight lines to generate a third straight line in contact with the Bezier curve, and a Bezier curve based on a contact point between the Bezier curve and the third straight line A divided Bezier when the approximate distance between the curve dividing unit for dividing a into two Bezier curves, the intersection of the first and second straight lines, and the contact point on the Bezier curve by the third straight line is equal to or greater than a reference distance. A curve segmentation control unit that recursively repeats the curve segmentation process with respect to the curve, and for each divided Bezier curve when the approximate distance is smaller than the reference distance. It may include a straight line data processing unit for replacing the corresponding Bezier curve using two straight lines connecting the control point.

The offline converter may further include an event converter that converts a mouse event included in a video into a button event of a wireless terminal device.

The event conversion unit may include a button selection unit for selecting a direction button and an input button among a plurality of buttons provided in the wireless terminal device, and a plurality of states of a video button configured to take action by receiving location information of the mouse and input information of the mouse button. The network of claim 1, further comprising: a state information control unit for deleting video button state information not corresponding to a direction button and an input button of the wireless terminal device, a network connected to the video button by recognizing the position of a video button displayed on a screen of the wireless terminal device And a video processing unit configured to select or execute a video button of a corresponding position on a network to which a video button is connected according to an operation of a direction button or an input button of the wireless terminal device.

The video data processing system based on the vector graphic may further include a frame controller which deletes one frame among adjacent frames that are similar to each other.

The frame control unit may include a frame extracting unit extracting a plurality of frame information constituting a video, an arithmetic processing unit calculating an operation characteristic value of each frame, and sequentially calculating a change amount of the operation characteristic values for two consecutive frames; The frame control unit may be configured to delete one of two frames with respect to a frame in which the change amount of the operation characteristic value is equal to or less than the reference change amount.

The vector graphic-based moving picture data processing system may further include a deletion list control unit which registers a component or frame to be deleted to a deletion list and selects and deletes the component and frame registered at the deletion list at regular intervals.

The video graphic processing system based on the vector graphic may further include a header controller configured to record a result of converting the video data into header information of the video data.

In addition, the vector graphics-based video data processing gateway system is connected to a server for transmitting vector graphics-based video data, for converting and transmitting vector graphics-based video data for use in a wireless terminal device. In the gateway system, an offline converter which extracts the vector graphic based video data transmitted from the server and performs offline conversion for wireless transmission, and wirelessly converts the vector graphic based video data converted through the offline converter. A wireless protocol communication device for transmitting to a user's wireless terminal device through a network, wherein the offline conversion unit extracts a frame display component for displaying a character on a screen from among the components constituting the video; , remind If only the space that contains the batch ingredients for the placement of characters on the display space in the frame component may include a controller component to delete the frame display component.

In addition, the vector graphics-based video data processing gateway system is connected to a server for transmitting vector graphics-based video data, for converting and transmitting vector graphics-based video data for use in a wireless terminal device. In a gateway system, an on-line conversion is performed such that a database including information on a specification of a wireless terminal device and video data based on vector graphics transmitted from a server can be processed by the wireless terminal device according to the specification of the wireless terminal device. An on-line converter and a wireless protocol communication device for transmitting the vector graphic-based video data converted through the on-line converter to a user's wireless terminal device through a wireless network, wherein the online conversion unit includes a wireless terminal device. To send to A component extracting unit for extracting a constituent component to be composed, a color converting unit for converting a color component representing color information from the constituent components constituting the video into color information that can be processed according to the specification of the wireless terminal device, and the video. A font converter which decomposes the font component and converts the font component into shape information corresponding to the specification of the wireless terminal apparatus when the font component representing the font information is not a font embedded in the wireless terminal apparatus; An image converting unit for converting an image component representing the image information into pixel information that can be processed according to the specification of the wireless terminal device, and a sound component representing sound information among the components constituting the video. Convert to sound information that can be processed according to specifications It may include a sound conversion.

In addition, the vector graphics-based video data processing gateway system is connected to a server for transmitting vector graphics-based video data, for converting and transmitting vector graphics-based video data for use in a wireless terminal device. A gateway system comprising: a database including information on a specification of a wireless terminal device; a conversion determining unit configured to extract conversion information and determine a conversion result from vector graphic based video data transmitted from a server; According to the specifications of the wireless terminal device, the offline conversion unit performing offline conversion for wireless transmission of the vector graphic-based video data that has not been offline-converted, and the vector graphic-based video data that is offline-converted. According to the wireless terminal device An on-line converter for performing on-line conversion for processing, and a wireless protocol for transmitting vector graphic-based video data converted through the off-line converter or on-line converter to a user's wireless terminal device through a wireless network. And a communication device, wherein the offline converting unit extracts a frame display component for displaying a character on the screen from among the components constituting the moving image; A component control unit for deleting the frame display component when only the spatial arrangement component is included, wherein the online conversion unit extracts a component constituting a moving picture to be transmitted to a wireless terminal device; Display color information among the components that make up a movie Is a color conversion unit for converting a color component into color information processable according to the specification of the wireless terminal device, and a font component representing font information among the components constituting the moving picture is not a font embedded in the wireless terminal device. A font converter which decomposes the font component into shape information corresponding to the specification of the wireless terminal device, and an image component representing image information among the components constituting the moving image as pixel information that can be processed according to the specification of the wireless terminal device. And a sound converting unit for converting a sound component representing sound information from among the components constituting the moving image into sound information that can be processed according to the specification of the wireless terminal device.

In addition, the wireless terminal device for processing vector data based on the vector graphic of the present invention is a system for converting the vector graphic based video data transmitted from the gateway according to the specification of the wireless terminal device, the information on the specification of the wireless terminal device. And a conversion determination unit for extracting the conversion information and determining the conversion result with respect to the memory including the image, the vector graphic-based moving image data transmitted from the gateway, and the moving image data that has not been converted online according to the determination result. An on-line converter for performing on-line conversion to process this according to the specification of the wireless terminal device, a video control unit for processing a user to recognize vector graphic based video data converted through the on-line converter; And video data according to the operation of the video controller. And a display unit for displaying on the screen, wherein the on-line converter is configured to extract a component constituting a moving image to be transmitted to the wireless terminal device, and wirelessly stores color components representing color information among the components constituting the moving image. If the font conversion unit for converting the color information that can be processed according to the specifications of the terminal device and the font component representing the font information among the components constituting the moving picture is not a font inherent in the wireless terminal device, the font component is decomposed. A font converting unit for converting into shape information corresponding to a specification of the wireless terminal device, and an image converting unit converting image components representing image information among the components constituting the moving image into pixel information processable according to the specification of the wireless terminal device. And sound from the components constituting the video. Converting the sound information to the sound information elements that can be processed according to the specifications of the wireless terminal device to represent the sound conversion may include a.

The video controller may include a parsing processor that analyzes the syntax of the video data to display the converted video on the screen, and a rendering processor that visualizes the video data so that the user can recognize the video.

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

The present invention selects and converts or deletes components that are not suitable for a wireless Internet environment from video data based on vector graphics. Further, by converting a portion of the curved data requiring a large amount of computation into linear data and converting a mouse event on the wired Internet into a keypad event of the wireless terminal device, efficient video data transmission in a wireless environment is possible. Hereinafter, this conversion process is referred to as offline conversion.

In addition, the present invention provides more efficient wireless service to various users through an online conversion process of converting flash video data converted into a form suitable for a wireless environment into a form suitable for the type of the wireless terminal device.

In general, video data may be divided into a bitmap image including all information about each pixel of an image constituting one frame and a vector graphic image including information for drawing an image constituting one frame.

Images, that is, images input through a digital camera or scanner, are images that are all composed of pixels. These pixels have some positional information, such as distance from the x- and y-axes, the presence or absence of pixels, or color information. As such, the use of a very small square grid called pixels to represent an image is called a bitmap image or raster graphic. Here, the grid is made up of lines arranged horizontally or vertically and is used to display the coordinates of the screen in computer graphics or to identify the relative position of the displayed image.

On the other hand, drawing programs that draw on a computer, such as Macromedia Flash or Adobe Illustrator, can produce vector graphics. Vector graphics are images created by line segments and curves defined by objects created by mathematical calculations called Vectors. In other words, the image is not represented by a certain pixel, but is represented by a straight line and a curved line between the positions. Therefore, the vector graphic image may be referred to as an image having mathematical calculation information of a computer as a line segment between each position (starting point and arrival point). Therefore, since it is not an image having the same substance as a pixel, the image is changed to a selection area, and then a certain color is filled in the boundary of the area or the selection area so that the bitmap image can be made.

On the other hand, there are a number of applications based on vector graphics, but will be described below based on the Macromedia Flash.

The SWF files that make up the Macromedia Flash movie used to produce the movie can be divided into headers and tags. The header may be divided into a file header for a SWF file and a record header for a designated data block. A tag is a block of data in a SWF file that has a tag type and a length. In addition, a character, a character ID, an object, a depth number, a character list, and a display list may be included. An object defined by a tag and its data is called a character, and a unit of a character realized in a display list is called an object. Each character has a character ID consisting of 16 bits of numbers to distinguish the characters defined in the SWF file. In addition, a depth number consisting of a 16-bit integer may be included to indicate a cumulative order of components on the display list. A dictionary of characters represents the current list of all the characters that appear in the definition or Flash movie within the SWF file. The display list represents a list of objects displayed on the screen at a certain position within a predetermined time.

The header may include a version field indicating whether to convert, a size field indicating a file size, and a content copyright protection field of the flash video. In particular, the version field is composed of a combination of NONE, OFF_CNVT, and ON-CNVT in order to indicate whether a header is converted.

The vector graphic-based video data processing method and system of the present invention use a version field of a header to indicate whether to convert a flash video for wireless data transmission. At this time, since the size of the data changes when the video data is converted, the content of the size field will change.

Tags constituting the flash video can be divided into a definition tag and a control tag. Definition tags define a list of resources such as shapes, text, bitmaps, and buttons that can be used at specific locations in the animation. Manage. Control tags control the display list and allow actions such as start and end of animation.

4 illustrates a definition tag of a macromedia flash.

Referring to FIG. 4, the definition tag includes a plurality of tags, that is, DefineShape, DefineShape2, DefineShape3, DefineMorphShape, DefineBits, DefineBitsJPEG2, DefineBitsJPEG3, DefineBitsLossless, DefineBitsLossless2, JPEGTables, DefineButton, DefineButton2, DefineButtonCxform, DefineButtonSound, DefineFont, DefineFont, Text It may include DefineText2, DefineSound, SoundStreamBlock, SoundStreamHead, SoundStreamHead2, and DefineSprite tags.

DefineShape, DefineShape2, DefineShape3, and DefineMorphShape tags are tags that represent the appearance of a Flash movie, and the DefineBits, DefineBitsJPEG2, DefineJPEG3, DefineBitsLossless, DefineBitsLossless2, and JPEGTables tags are tags that represent bitmap images. In addition, the DefineButton, DefineButton2, DefineButtonCxform, and DefineButtonSound tags correspond to button tags indicating the movement or operation of the mouse. DefineFont, DefineFont2, DefineFontInfo, DefineText, and DefineText2 tags indicate text and font information included in a flash video. The DefineSound, SoundStreamBlock, SoundStreamHead, and SoundStreamHead2 tags represent the sound of the Flash movie, and the DefineSprite tag represents the SWF movie contained within the SWF movie.

In order to efficiently transmit wireless data among these defined tags, it is necessary to delete or convert shape tags, bitmap tags, font tags, and sound tags.

DefineBits, DefineStreamsJPEG2, DefineBitsJPEG3, DefineBitsLossless and DefineBitsLossless2 tags, DefineFont, DefineFont2, and DefineFontInfo tags and sound tags corresponding to bitmap tags define the SoundSound, SoundStreamBlock, SoundStreamHead, and SoundStreamHead2 tag data corresponding to It should be changed to a form that can be supported. In this way, the size of the wireless data transmitted through the conversion process can be reduced.

That is, since the flash video uses vector graphics, the bitmap tag is converted according to the number of colors supported by the wireless terminal device, and the font tag and sound tag are also converted according to the font and sound supported by the wireless terminal device.

In addition, since the current wireless terminal device does not support mixing of sounds, the tag defining the background music may be deleted.

On the other hand, shape tags that include the DefineShape, DefineShape2, DefineShape3, and DefineMorphShape tags contain data that represents the shape of the characters included in the Flash movie, and the vector graphic image, like the Flash movie, has a curved second-order Bezier. Expressed in a curve. Bezier curves are represented using the vertices (control points) of the polygons that define the curves to be created. The blending function that determines the shape of the curves is Bernstein polynomial.

The video data processing method and system of the present invention can reduce the data size of a flash video by converting Bezier curve data included in a shape tag into a plurality of continuous straight data and merging the converted straight data. have.

5A and 5B illustrate a process of converting curved data included in a video into linear data in a vector graphic based video data processing method and system according to an exemplary embodiment of the present invention.

First, referring to FIG. 5A, the second Bezier curve C1 may be expressed as two line segments P1P2 and P2P3 connecting one point P2 outside the curve and two end points P1 and P3 of the curve. That is, one Bezier curve may be defined as three points P1, P2, and P3. In this case, when the midpoint P12 of the line segment P1P2 and the midpoint P23 of the line segment P2P3 are connected, the Bezier curve C1 is always in contact. If the contact point is M, the original Bezier curve C1 is divided into a curve between points P1 and M and a curve between points M and P3. Therefore, the curve C1 can be expressed by three line segments of the line segment P1P12, the line segment P12P23, and the line segment P23P3. That is, one curve data can be converted into three straight data. In this way, the distance D between the point P2 outside the curve C1 and the contact point M is measured in a situation where one curve can be represented by three straight lines. Recursively repeating this curve conversion process causes the distance D between the point outside the curve and the contact point to continuously decrease. The distance D is a value that varies depending on the object of which the screen is configured, and may be a pixel or a mathematical length.

At this time, if the value of the distance D is designated as a constant value, the number of times to divide the curve C1 can be adjusted. In other words, when the reference value of the distance D is increased, the number of divisions of the curve C1 is reduced, so that the size of the linear data that can represent the curve data can be simplified, but the accuracy is reduced. On the other hand, if the reference value of the distance D is reduced, the curve C1 is represented by a large number of small straight lines, so that the accuracy can be increased. For example, a value of the distance D may be set to a unit length of 1 or less, and the smaller the value, the higher the accuracy of the flash video, and the larger the value, the smaller the data size transmitted to the wireless terminal device. . However, whether the reference value of the distance D is made large or small, by converting Bezier curve data into linear data, it is possible to reduce the size of the transmitted curve data and enable efficient wireless data transmission.

After converting a curve included in the video to a straight line in this manner, if two adjacent straight lines are connected to each other, as shown in FIG.

That is, when the adjacent straight line P6P7 and the straight line P7P8 intersect, the triangle P6P7P8 which makes the intersection point P7 the vertex can be drawn. At this time, measure the <P7P6P8 (A1) and <P7P8P6 (A2) which constitute the base of the triangle P6P7P8, and if the magnitude | size of two angles (A1, A2) is below a reference angle, the straight line P6P7 and the straight line P7P8 will be in parallel straight lines. You can judge. The reference angle may have any value between 0 and π radians, but is preferably set to a value of 0.2 radians or less.

As described above, when two adjacent straight lines (straight line P6P7 and straight line P7P8) meet each other at a predetermined reference angle or less, the two straight lines may be determined to be parallel and may be expressed as one straight line P6P8. The reference angle may be changed according to a predetermined size or a user's selection in the process of converting the reference angle into data suitable for the wireless terminal device. Thus, by expressing a curve in several straight lines within a specified range and merging two adjacent straight lines into one straight line, the size of the curve data to be processed can be significantly reduced.

As such, the curve can be represented by a straight line, and the process of merging the straight lines can continue until it can no longer be simplified. When expressing the outline of the flash video, the original video image can be reproduced by displaying on the screen by using the straight line data converted and merged from the curve, and coloring the inside of the curve to the range inside the straight line. At this time, by setting the distance D between the contact and the contact outside the curve and the reference value of the base angle by two adjacent straight lines to be smaller, the size of the curve data can be reduced and a more accurate image can be expressed.

As described above, by expressing the curved data included in the shape tag as straight data and merging a plurality of straight data, the size of the flash video data can be significantly reduced.

In addition, since the button tag including the DefineButton, DefineButton2, DefineButtonCxform, and DefineButtonSound tags is used to express the movement or operation of the mouse, the button tag may be converted into a form suitable for a wireless terminal device that does not use the mouse.

The operation of the mouse provided in the user's computer system on the wired network is expressed by a combination of a pointing function moving up, down, left and right and information indicating the pressed state of the mouse button at a certain position.

The button appearing in the flash video takes action by receiving mouse event information such as mouse position information and input information of the mouse button. These flash events are handled by the tag that defines the button. The flash button consists of four states: UP, DOWN, OVER, and HIT AREA. UP defines the behavior of the flash button when the left mouse button is pressed and released. DOWN defines the behavior of the flash button when the left mouse button is pressed. OVER defines the action of the flash button when the mouse pointer is over the flash button, and HIT AREA defines the action area of the flash button for UP / DOWN / OVER movement according to the movement of the mouse.

For example, when the mouse pointer is moved over the flash button, it is determined whether the mouse pointer corresponds to the HIT AREA area of the flash button based on the x and y coordinate values of the mouse pointer. If the x and y coordinates of the mouse pointer are included in the HIT AREA area, the current state of the corresponding flash button is transferred to the OVER state. Also, if the left mouse button is pressed while the mouse pointer is over a specific flash button, the current state of the flash button is transitioned from the OVER state to the DOWN state. Similarly, when the left mouse button is pressed and released over the flash button, the state of the flash button is transitioned to the UP state.

Therefore, converting a mouse event into a keypad event corresponding to a wireless terminal device is a method of transitioning the state of a flash button so that the flash button recognizes the movement of the mouse pointer and the state of the mouse button in a wireless terminal without a mouse. Corresponding.

6A and 6B are diagrams for explaining a method of converting a mouse event into a button event of a wireless terminal device in a method and system for processing video data based on vector graphics according to an exemplary embodiment of the present invention.

6A and 6B, a method of converting a mouse event into a button event of a wireless terminal device will be described below.

When the mouse pointer moves, continuous x and y coordinate values are continuously input, and this situation cannot exist because the wireless terminal device does not use a mouse. Therefore, the user can move up, down, left, and right and enter commands among the buttons of the wireless terminal device. Select any five buttons that represent. Typically, you will use four directional buttons and a center center button. When five buttons are selected in the wireless terminal device, names of left, right, up, down, and enter are assigned to each button. In a wired computer system, when the mouse pointer moves up, down, left, or right, the current position coordinates (x, y) are respectively (x, y + 1), (x, y-1), (x-1, y), (x +1, y) coordinates, but the wireless terminal device changes the (x, y) coordinates to (x1, y1), (x2, y2), (x3, y3), (x4, y4) coordinates. In this case, x1, x2, x3, and x4 are values equal to or less than the left and right maximum values of the screen and correspond to zero or positive integers, and y1, y2, y3, and y4 are values equal to or less than the maximum and horizontal maximum values of the screen. Corresponds to an integer. These values are related to the distance in the x-axis direction or the y-axis direction between the flash button in the OVER state and the adjacent flash button up, down, left, and right.

Currently, as shown in FIG. 6A, assume that there are nine square flash buttons and the middle flash button is in an OVER state.

When the center point position of the flash button in the current OVER state is (x, y), if the left button of the wireless terminal device is pressed, the flash button located at the shortest distance to the left (-x direction) of the current flash button is found. . If no flash button exists in the corresponding direction, no action is taken. However, when another flash button is found on the left side as shown in FIG. 6A, the center point (x1, y1) of the newly found flash button is calculated.

Then, the flash button which is currently in the OVER state is made into the UP state, and the newly found flash button is transferred to the OVER state. Then, as shown in Fig. 6B, the current position is changed to the newly calculated position (x1, y1). At this time, the difference (x1-x, y1-y) between two coordinate values (x, y) and (x1, y1) of adjacent flash buttons is obtained and connected to the corresponding flash button. In this way, if a network between the buttons is formed for the up, down, left, and right sides of adjacent flash buttons, the left, right, up, and down commands are transmitted through the wireless terminal device. When input, the event of going to another button can be changed to one keypad event by the continuous movement of the mouse. The state where the left mouse button is pressed can be replaced by pressing the enter button. As such, the mouse event for the flash video may be implemented using only the DOWN and OVER states in the wireless terminal device. Therefore, other mouse events, that is, UP and HIT AREA states can be deleted. As a result, the DOWN and OVER states are converted to be used in the wireless terminal device among the mouse event states of the flash video implemented in the computer system, and the remaining UP and HIT AREA states are deleted, thereby reducing the amount of data to be processed and Control can be enabled.

7 shows a control tag of a macromedia flash.

Referring to FIG. 7, control tags of the macromedia flash include End, FrameLabel, PlaceObject, PlaceObject2, Protect, RemoveObject, RemoveObject2, SetBackgroundColor, ShowFrame, StartSound, and DoAction tags. Among the control tags, ShowFrame tag displays all characters in the display list on the screen. When the display of the frame is finished, the screen display of the flash video is terminated by the end tag. ShowFrame tags usually consist of PlaceObject tags. The PlaceObject tag serves to place a character in a space by a definition tag. At this time, if a tag other than the PlaceObject tag exists in the ShowFrame tag, the ShowFrame tag cannot be omitted because it includes other definitions. However, if only the PlaceObject tag exists, you can omit the ShowFrame tag because it does not affect the aesthetic identity of the Flash movie.

On the other hand, it is possible to compare the change between adjacent frames constituting the flash video. For example, the data included in the ShowFrame tag includes information about rotation, scale, or translation of a video. The information about each of these frames is formed into a matrix, and a determinant representing the operation characteristics of each frame can be obtained. When the difference between the determinants representing the operating characteristics of the adjacent frames is obtained and the difference is smaller than the reference change amount, it can be determined as a continuous frame with little change between adjacent frames. For continuous frames with little change, one frame can be deleted.

8 is a flowchart illustrating an offline conversion process of converting flash video data into wireless data suitable for a wireless terminal device in the vector graphic-based video data processing method according to an embodiment of the present invention.

Referring to FIG. 8, the offline conversion process is as follows. This offline conversion process may be performed at the WAP server or the WAP gateway.

Conversion of a video produced using a vector graphics based application such as Macromedia Flash is performed for each tag and its data. To this end, first, the tag existing in the flash video is input (s10). It is checked whether the input tag is an end tag (tagEnd) indicating the end of the tag (s12). In the case of tagEnd, information indicating the size of the reduced video file, whether to convert the event, and whether the shape is optimized is recorded in the header through the offline conversion process, and the version information in the header is changed to OFF_CNVT. By recording that the offline conversion is completed, the offline conversion is terminated (s14). The version information is a field present in the header of the flash video and indicates whether to convert offline.

If it is not the end tag, it is checked whether the input tag is a ShowFrame tag used for conversion to wireless data (s16). In the case of the ShowFrame tag, it is checked whether the corresponding frame is composed of PlaceObject tags only (s20). If the corresponding frame consists only of the PlaceObject tag, it may be deleted during the rendering process of visualizing the flash video on the screen of the wireless terminal device, so it is registered in the between frame list (s22). The Between frame list is a list representing frames that may be deleted through the process of converting the radio data into wireless data among the plurality of frames constituting the flash video. Therefore, all frames registered in the between frame list may be deleted before being converted into wireless data or may be selectively deleted at regular intervals. Or, it is registered in the between frame list but can be used for wireless data processing without deleting all.

If the corresponding frame may include other tags in addition to the PlaceObject tag. The tag other than the PlaceObject tag is a tag that defines objects to be displayed on the screen of the wireless terminal device, or a tag that cannot be ignored during a visualization process such as a tag that erases an object on the screen. . As such, if it is determined that the frame cannot be deleted, the frame deletion rule is applied by calculating a change amount of the operation characteristic between successive frames (S36). The frame deletion rule specifies the amount of change in the operating characteristics between two consecutive front and rear frames, and if the amount of change is less than or equal to the reference amount of change, determines that there is little change between the two frames and deletes the previous frame or the next frame (s38). .

The motion characteristics of each frame can be obtained by forming a matrix of rotation, scale, or transformation information of a video constituting the frame, and calculating a determinant of each matrix. Therefore, the absolute value of the difference between the determinants of two consecutive frames is calculated and compared with the reference variation. The reference change amount can be specified as a value between 0 and 1. As the reference change amount increases, the number of frames to be deleted increases to simplify the flash video data. As the reference change amount approaches 0, the number of frames to be deleted decreases.

On the other hand, a frame that has not been deleted according to the comparison of the operation characteristic change amount and the reference change amount between successive frames may be registered as between frames, and the frames may be selected and deleted at predetermined intervals (s40). In the wireless data conversion process of the flash video, it may be desirable not to delete the between frames initially. However, the size of the flash movie may be further reduced by deleting every n th frame from the list of frames, for example, according to a user's selection.

The tag and tag data left undeleted in the between frame list will be stored and used as wireless data (s42). On the other hand, if the input tag is not a ShowFrame tag, it is checked whether a defined tag such as shape, bitmap, sprite, sound, button, and font is defined (s18). If the input tag is not a definition tag, it is determined that it can no longer be converted or deleted (S42). If the input tag is a Definition tag, it is determined whether the tag is unnecessary for wireless data transmission such as a background music tag, and the corresponding tag is deleted (s26). If the tag cannot be deleted, it is determined whether it is a shape tag (s28). In the case of a tag defining a shape, the curved data is converted into straight data, the plurality of converted straight data are merged to optimize the shape data (s32), and the corresponding tag and tag data are stored (s42).

If it is not a shape tag and corresponds to a button tag, the mouse or keyboard event processing method is converted into an event that can use an input button of the wireless terminal device (S34). The conversion process of an event for a wireless terminal device has been described above.

On the other hand, after reducing the size of the video data based on the vector graphics, and converting to the wireless data suitable for the wireless terminal device, it can be converted to meet the specifications of the wireless terminal device through the online conversion process.

FIG. 9 is a flowchart illustrating an online conversion process of converting wireless data to meet the specifications of a wireless terminal device in a vector graphic based video data processing method according to an embodiment of the present invention.

Referring to FIG. 9, first, information about a wireless terminal device for playing a flash video is collected (S60). The specification of the wireless terminal device can be generally divided according to the size of the display screen, pixel information that can be expressed, and sound information. Typical manufacturers of wireless terminal devices capable of processing such video data include Nokia, Motorola, SK telecom, Samsung, LG, Hyundai, NTT Docomo and the like. There are many kinds of wireless terminal devices produced by such manufacturing companies, and there is a big difference in data performance that can be processed.

For example, LG's iBook wireless terminal model has a screen size of 128 * 128 pixels, and four colors (black, dark gray, light gray and white) can be implemented in each pixel. Sound is also a speaker output using a buzz and a codec called QCELP.

In this case, if there is a bitmap information of true color in the flash video, this part may be displayed on the screen of the wireless terminal device only after converting the bitmap into a bitmap composed of only four colors. That is, the number of colors included in the shape tag is abbreviated to match the number of colors of the wireless terminal device. Typically, you convert from 24-bit true color to 4 gray, 256 or 4,096 colors. In addition, when the size of the converted wireless data image is larger than 128 * 128 through the converted offline conversion process, it may not be possible to express all the images on one screen. Therefore, the size of the image must also be modified to fit the screen size of the wireless terminal device. In addition, if the flash video has sound defined as MP3, it cannot be heard by the wireless terminal device, and thus the MP3 data is converted using the QCELP transcodec to convert the format of the sound data. Such sound information may vary according to hardware specifications of the wireless terminal device. In addition, when the font defined in the flash video, for example, Time new Roman font, is not supported by the wireless terminal device, all font information is decomposed into shape information, and displayed on the screen.

As such, when the collection of the information of the wireless terminal device for processing the flash video is completed, the tag converted into the wireless data and the data inside the tag are received through the offline conversion process (S62). It is checked whether the input tag is the end tag (tagEnd) (s64), and if it corresponds to the end tag, the header information is corrected according to the online conversion of the flash video, and the online conversion result (ON_CNVT) is displayed in the version field of the header information. ) (S66). If it is not the end tag, it is checked whether it corresponds to the Definition tag (s68). If it is not a Definition tag, since it is not tag information to be converted online, new tag information is received (s62). If it corresponds to a Definition tag, is it a shape tag defining a shape (s70), a font tag defining a font (s74), a bitmap tag defining a bitmap (s78), or a sound tag defining sound Check (s82). If the Definition tag is not a shape tag, font tag, bitmap tag, or sound tag, since online conversion is not necessary, new tag information is received (s62).

In the case of the shape tag, color information of the shape definition is converted into color information that can be processed by the wireless terminal device (S72). In the case of a font tag, it is determined whether the font is inherent in the wireless terminal device. If the font is inherent in the wireless terminal device, the font information is left as it is. Otherwise, the font information is decomposed and converted into shape information (s76). If the input tag is a bitmap tag, all pixel information existing in the bitmap tag is converted into pixel information that can be represented by the wireless terminal device (S80). When the sound tag is input, the sound tag is converted into sound information that can be expressed in the wireless terminal device (S84). This conversion process will be performed repeatedly until the input tag is an end tag.

In the above, macromedia flash has been described as an example of an application for processing video data based on vector graphics, but it is obvious that the same method can be applied to all applications that process video based on a vector graphic method. That is, the same method of converting the curved data into the straight data may be applied to the vector graphic video constituting the image by the Bezier curve. In addition, the method of converting video data using a mouse event into a button event of a wireless terminal device may be equally applied to all video. In addition, the wireless data transmission efficiency may be increased by extracting and deleting components not used in the wireless data transmission or the wireless terminal device from the video data and converting the corresponding components to be suitable for the wireless data transmission and the wireless terminal device. .

In the flash video conversion method, an offline conversion method for wireless transmission of the flash video may be performed by a web server or a WAP gateway, and the online conversion method according to the specification of the wireless terminal device may be a WAP gateway or a wireless terminal device. It can be performed in.

10 is a block diagram of a vector graphic-based moving picture data processing system according to an exemplary embodiment of the present invention.

Referring to FIG. 10, the vector graphic-based video data processing system according to the present invention includes a web server 110 for generating and processing a vector graphic-based video such as a flash video, a wireless terminal device 130 corresponding to a client, and a web. It is composed of a WAP gateway 120 in charge of data conversion between the server 110 and the wireless terminal device 130. The web server 110 may include a flash video offline converter 114 for converting the vector graphic-based flash video to be suitable for wireless data transmission. In addition, the wireless terminal device 130 converts the data converted to be suitable for wireless data transmission through the flash video offline converting unit 114 according to the specification of the wireless terminal device 130 to convert the flash video online. The conversion unit 134 may be included. The WAP gateway 120 includes an on-line conversion for converting a flash video that has undergone an offline conversion or an offline conversion process suitable for wireless data transmission to meet the specifications of the wireless terminal device 130. / Off-line converter 124 may be included.

The web server 110 includes the flash video generated through the flash video generator in the content server 116. The flash video offline converter 114 converts the flash video data stored in the content server 116 to be suitable for wireless data transmission through an offline conversion process. That is, tag data unnecessary for wireless data transmission are deleted from the flash video data through the method shown in FIG. 8, and the specified tag data is converted to be suitable for wireless data transmission. The flash video converted through the offline conversion process may indicate whether to convert in the header information and be stored in the content server 116. The web server 110 transmits the flash video data, which has been offline, to the WAP gateway 120 using a wired communication protocol device 112 such as an HTTP communication device.

The WAP gateway 120 may check whether the offline conversion is made from version information in the header of the flash video transmitted from the web server 110. When the offline conversion is not performed, offline conversion suitable for wireless data transmission may be performed through the flash video on / offline converter 124 inside the WAP gateway 120. After the offline conversion is performed, the online conversion process may also be performed according to the specification of the wireless terminal device to be transmitted. When the WAP gateway 120 performs an offline conversion or an online conversion process, the WAP gateway 120 transmits the flash video data that has been subjected to offline conversion or online conversion through the wired / wireless communication protocol conversion device 122 to the wireless terminal device 130. .

The wireless terminal device 130 receives the flash video data transmitted from the WAP gateway 120 through the wireless communication protocol device 132. Then, the version information in the header of the received flash video is extracted to check whether it is offline conversion or online conversion. When the transmitted flash video only performs offline conversion, the on-line conversion is performed through the flash video on-line converter 134 to meet the specification of the wireless terminal device 130. When the on-line conversion is performed through the flash video online conversion unit 134 or the flash video with the on-line conversion is transmitted, the flash video will be displayed on the display unit 138 through the WAP browser 136.

Meanwhile, the user of the wireless terminal device 130 may control the operation of the flash video using an input / output device (not shown on the screen) provided in the wireless terminal device 130. In addition, when a user inputs a command to the wireless terminal device 130, it is transmitted to the WAP gateway 120 through the wireless communication protocol device 132 and through the wired / wireless communication protocol conversion device 122 of the WAP gateway 120. Is sent to the web server 110. The web server 110 extracts the flash video data corresponding to the user's command from the content server 116, and the extracted flash video data is used to extract the web server 110, the WAP gateway 120, and the wireless terminal device 130. Throughout the process, offline conversion and online conversion will be performed sequentially. Accordingly, a user of the wireless terminal device 130 may request a desired flash video from the web server 110 and receive it through the wireless terminal device 130.

11 is a flowchart illustrating a video data processing process in a web server in a vector graphic based video data processing method according to an exemplary embodiment of the present invention.

Referring to FIG. 11, it is determined whether a flash video to be transmitted to a wireless terminal device is extracted from a content server included in a web server (S100) and converted into data suitable for the wireless terminal device (S102). If the offline conversion has already been made, a separate offline conversion process will not be necessary. If offline conversion is not performed, header information of the flash video is extracted (s104), and the flash video data is converted into wireless data through the offline conversion process shown in FIG. 8 (s106). The version information indicating that the offline conversion is performed is recorded in the header information for the flash video having the offline conversion (s108). At this time, the data size or the number of frames of the changed flash video is modified together with the version information, and the converted flash video is stored in the content server (S110). In addition, if there is a flash video to be converted, the process of FIG. 11 is repeated with respect to the corresponding flash video, and if it does not exist, all processes are terminated. When there is a request for a specific flash video from the user, the web server extracts the flash video with offline conversion from the content server and sends it to the WAP gateway. In this case, when offline conversion is not performed in the web server, offline conversion of the flash video may be performed in the WAP gateway.

12 is a flowchart illustrating a video data processing process in a WAP gateway in a vector graphic based video data processing method according to an exemplary embodiment of the present invention.

Referring to FIG. 12, the WAP gateway receives a flash video through a wired protocol such as HTTP (S130). When the flash video is received, the header information of the flash video is extracted (s132), and it is determined whether offline conversion is performed through the version information (s134). If offline conversion is not performed in the web server, the offline conversion process of FIG. 8 is performed (s136). On the other hand, if the offline conversion has already been made in the web server, the specification of the wireless terminal device is selected for the online conversion suitable for the specification of the wireless terminal device (S138). At this time, the specification of the wireless terminal device will be hardware limitations such as the size of the output screen, the limit of the color representation of the output device, the limit of the sound support device. Based on the specification of the wireless terminal device, it is determined whether the specification of the currently connected wireless terminal device is sufficient to support the flash video which has undergone offline conversion (S140). If the specification of the wireless terminal apparatus is sufficient to support the offline converted flash video, the version information is changed to the online conversion complete state (ON_CNVT) in the header information of the flash video (S144). Then, the corresponding flash video is transmitted to the wireless terminal device in operation S136.

On the other hand, if it is determined that the user's wireless terminal device is insufficient to support the flash video that has undergone offline conversion, perform the online conversion process of FIG. 9 (s142) and reflect the changed size of the flash video header. Modify the information (s144). At this time, the version information indicating the online conversion is also modified. The WAP gateway transmits the flash video data which has been subjected to the online conversion to the user's wireless terminal device in operation S146. At this time, the user may be charged for the cost of transmitting the flash video.

13 is a flowchart illustrating a video data processing process in a wireless terminal device of a user in a vector graphic based video data processing method according to an exemplary embodiment of the present invention.

Referring to FIG. 13, the user's wireless terminal device receives a flash video transmitted from a WAP gateway (S160). The header information of the flash video is extracted in order to confirm whether the received flash video is online converted by the WAP gateway (S162). If the version information is not ON_CNVT, it is determined that the content that cannot be processed by the wireless terminal device is included, and the online conversion process of FIG. 9 is performed on the flash video (S166). On the other hand, if the version information indicates on-line conversion, since the content can be processed by the wireless terminal device, a parsing operation for parsing the syntax of the content included in the flash video is performed (S168). When parsing of the flash video is completed, a rendering operation corresponding to the display unit of the wireless terminal device is performed (S170). Then, it is determined whether the flash video is waiting for the user's input (s172), and the input processing process is performed (s174). At this time, the mouse and keyboard input present in the flash video without the offline conversion in the input processing process is converted into input through the input button of the wireless terminal device is processed. If the user's input is completed or is not in the input standby state, the rendering process for the current frame of the flash movie is terminated (s176). In this case, when the end button is input from the user, the process of outputting the flash video of the wireless terminal device is terminated, and the rendering operation for the next frame of the flash video is repeated before the end button is input from the user.

As described above, according to the vector graphic-based moving picture data processing method of the present invention, moving picture data for wireless communication is removed by removing components unnecessary for wireless data processing and converting each of the components to be suitable for processing the wireless data. Can be reduced.

In addition, the vector graphic-based video data processing method of the present invention converts the curve data included in the vector graphic-based video data into linear data and processes the merged data, thereby reducing the size of the video data transmitted in the wireless communication process. Can be.

In addition, the vector graphic-based video data processing method of the present invention can easily view the video data through the wireless terminal device by converting the vector graphic-based video data according to the hardware specification of the wireless terminal device.

In addition, the vector graphic-based video data processing method of the present invention converts a mouse and keyboard event for a video into an event for an input button of the wireless terminal device, thereby efficiently processing the video data in the wireless terminal device.

In the above described in detail through a preferred embodiment of the vector graphics-based video data processing method and system according to the present invention, the content is not limited to the field of the invention described in the claims below. In addition, in the art, it will be apparent to those skilled in the art that various changes or modifications are made within the scope of the present invention.

Claims (64)

In the method for processing video data based on vector graphics for use in a wireless terminal device, Extracting Bezier curves from vector graphic based moving image data; Connecting at least three control points defining the Bezier curve to generate first and second straight lines that abut the Bezier curve; Connecting a midpoint of the first and second straight lines to generate a third straight line in contact with a Bezier curve; Dividing a Bezier curve into two Bezier curves based on the contact point between the Bezier curves and a third straight line; When the approximate distance corresponding to the intersection of the first straight line and the second straight line and the contact point on the Bezier curve by the third straight line is greater than or equal to the reference distance, the curve division process is recursively performed on the divided Bezier curve. Repeating with; And If the approximate distance for each Bezier curve divided through the curve division process is smaller than the reference distance, the corresponding Bezier curve using two straight lines connecting at least three control points for each divided Bezier curve Steps to replace Curve data processing method based on vector graphics comprising a. The method of claim 1, Vector graphics based videos A method for processing curve data based on vector graphics, which is a movie produced by Macromedia Flash. The method of claim 1, Forming a triangle with two straight lines replacing the divided Bezier curve as a side and the two straight lines forming a triangle with a base line connecting the contact points in contact with the Bezier curve; And Replacing the two straight lines with a straight line including the bottom if the sizes of the two inner angles belonging to the bottom are less than or equal to the reference angle Curve data processing method based on vector graphics further comprising. The method of claim 4, wherein The reference angle is Curved data processing method based on vector graphics having a magnitude between 0 and π radians. In the method for processing video data based on vector graphics for use in a wireless terminal device, Extracting location information of a mouse and input information of a mouse button included in a vector graphic-based video; Extracting a plurality of state information for a video control button set to control a video displayed on a screen according to a position of a mouse and an input of a mouse button; Deleting, from among a plurality of states for the video control button, state information not corresponding to a direction button and an input button previously selected for video control in a wireless terminal device; Recognizing the position of the video control button displayed on the screen of the wireless terminal device, and configuring a button network to which the video control button is interconnected; Receiving at least one button operation among a direction button and an input button of the wireless terminal device; And Executing a video control button function of a corresponding position on the button network according to a button operation of at least one of a direction button and an input button of the wireless terminal device; Vector graphics-based event processing method comprising a. The method of claim 5, The flash button state that does not correspond to the direction button and the input button of the wireless terminal device is UP state that defines the behavior of the flash button when the left mouse button is released, DOWN state that defines the behavior of the flash button when the left mouse button is pressed, and when the mouse pointer is over the flash button. In the OVER state defining the operation of the flash button and the HIT AREA state defining the action radius of the flash button for the operation of the UP state, DOWN state and OVER state according to the movement of the mouse. Vector graphics-based event handling method in UP state or HIT AREA state. In the method for processing video data based on vector graphics for use in a wireless terminal device, Extracting a plurality of frame information constituting a video; Calculating an operating characteristic value for each frame; Sequentially calculating a change amount of an operating characteristic value for two consecutive frames; And Deleting one of two frames with respect to a frame having a change amount of an operation characteristic value equal to or less than a reference change amount Frame data processing method based on vector graphics comprising a. The method of claim 7, wherein Calculating an operating characteristic value for the frame Constructing a matrix using screen information constituting a frame as a component; And Calculating a determinant of the matrix Frame data processing method based on vector graphics comprising a. The method of claim 8, Screen information constituting the frame is The vector graphics-based frame data processing method comprising at least one of rotation information, scale information and movement information. In the method for processing video data based on vector graphics for use in a wireless terminal device, Extracting components constituting the video; Extracting a frame display component for displaying a character on the screen from the components; Extracting detailed components included in the frame display component; And Deleting the frame display component when the detail constituent component in the frame display component includes only a space arrangement component for placing a character in space; Vector graphics-based video data processing method comprising a. The method of claim 10, Deleting background music components that define background music from the components that make up a movie Vector graphics-based video data processing method further comprising. The method of claim 10, Steps to convert the curve data composing the video into straight data Vector graphics-based video data processing method further comprising. The method of claim 12, Converting the curve data into straight data Extracting Bezier curves from vector graphic based moving image data; Connecting at least three control points defining the Bezier curve to generate first and second straight lines that abut the Bezier curve; Connecting a midpoint of the first and second straight lines to generate a third straight line in contact with a Bezier curve; Dividing a Bezier curve into two Bezier curves based on the contact point between the Bezier curves and a third straight line; When the approximate distance corresponding to the intersection of the first straight line and the second straight line and the contact point on the Bezier curve by the third straight line is greater than or equal to the reference distance, the curve division process is recursively performed on the divided Bezier curve. Repeating with; And If the approximate distance for each Bezier curve divided through the curve division process is smaller than the reference distance, the corresponding Bezier curve using two straight lines connecting at least three control points for each divided Bezier curve Steps to replace Vector graphics-based video data processing method comprising a. The method of claim 10, Converting a mouse event included in the video into a button event of a wireless terminal device Vector graphics-based video data processing method further comprising. The method of claim 14, The step of converting the mouse event included in the video into a button event of the wireless terminal device Extracting location information of a mouse and input information of a mouse button included in a vector graphic-based video; Extracting a plurality of state information for a video control button set to control a video displayed on a screen according to a position of a mouse and an input of a mouse button; Deleting, from among a plurality of states for the video control button, state information not corresponding to a direction button and an input button previously selected for video control in a wireless terminal device; Recognizing the position of the video control button displayed on the screen of the wireless terminal device, and configuring a button network to which the video control button is interconnected; Receiving at least one button operation among a direction button and an input button of the wireless terminal device; And Executing a video control button function of a corresponding position on the button network according to a button operation of at least one of a direction button and an input button of the wireless terminal device; Vector graphics-based video data processing method comprising a. The method of claim 10, Deleting one frame among adjacent frames that is similar to each other for the plurality of frames configuring the video Vector graphics-based video data processing method further comprising. The method of claim 16, Deleting one frame among the similar adjacent frames Extracting a plurality of frame information constituting a video; Calculating an operating characteristic value for each frame; Sequentially calculating a change amount of an operating characteristic value for two consecutive frames; And Deleting one of two frames with respect to a frame having a change amount of an operation characteristic value equal to or less than a reference change amount Vector graphics-based video data processing method comprising a. The method according to any one of claims 10, 11 and 16, Deleting the component or frame Registering the component or frame to be deleted in the deletion list; And Selecting and deleting components and frames registered in the deletion list at regular intervals; Vector graphics-based video data processing method comprising a. The method of claim 10, Recording the conversion result of the video data in the header information of the video data Vector graphics-based video data processing method further comprising. In the method for processing macromedia flash video data for use in a wireless terminal device, Extracting information about a tag constituting a flash video; Deleting only the ShowFrame tag when only the PlaceObject tag is included in the ShowFrame tag constituting the flash video; A shape tag constituting a flash video, the shape tag comprising: converting curved data included in the shape tag into linear data; And A button tag constituting a flash video, the method comprising: converting a mouse event into a button event of a wireless terminal device Flash video data processing method comprising a. The method of claim 20, The shape tag is At least one of DefineShape, DefineShape2, DefineShape3, and DefineMorphShape tags Flash video data processing method comprising a. The method of claim 20, The button tag At least one of the DefineButton, DefineButton2, DefineButtonCxform, and DefineButtonSound tags Flash video data processing method comprising a. In the method for processing video data based on vector graphics for use in a wireless terminal device, Collecting information about a specification of the wireless terminal device; Extracting components constituting a moving picture to be transmitted to the wireless terminal device; When at least one component of color information, font information, image information, and sound information is included in the component, wireless to receive video data with respect to at least one of the color information, font information, image information, and sound information. Determining whether it corresponds to a specification of the terminal device; And When at least one of the color information, font information, image information, and sound information does not correspond to the specification of the wireless terminal device in the wireless terminal device, at least one of the corresponding color information, font information, image information, and sound information is wireless. Converting to meet the specifications of the terminal device Vector graphics-based video data processing method according to the specification of the wireless terminal device comprising a. The method of claim 23, wherein Information about the specification of the wireless terminal device At least one of information about the size of the display screen, the color color that can be expressed, and the type of sound that is output Vector graphics-based video data processing method according to the specification of the wireless terminal device comprising a. The method of claim 23, wherein Recording the conversion result of the video data in the header information of the video Vector graphics-based video data processing method according to the specification of the wireless terminal device further comprising. In the method for processing macromedia flash video data for use in a wireless terminal device, Collecting information about a specification of the wireless terminal device; Extracting a tag constituting a flash video to be transmitted to the wireless terminal device; When at least one tag of a shape tag, a font tag, a bitmap tag, and a sound tag is included in a tag constituting the flash video, at least one of the shape tag, font tag, bitmap tag, and sound tag is flashed. Determining whether it corresponds to a specification of a wireless terminal device to receive video data; And At least one of the corresponding shape tag, font tag, bitmap tag and sound tag when at least one of the shape tag, font tag, bitmap tag and sound tag does not correspond to the specification of the wireless terminal device in the wireless terminal device Converting to correspond to the specifications of the wireless terminal device Flash video data processing method according to the specification of the wireless terminal device comprising a. The method of claim 26, The shape tag is At least one of DefineShape, DefineShape2, DefineShape3, and DefineMorphShape tags Flash video data processing method according to the specification of the wireless terminal device comprising a. The method of claim 26, The font tag is At least one of the DefineFont, DefineFont2, and DefineFontInfo tags Flash video data processing method according to the specification of the wireless terminal device comprising a. The method of claim 26, The bitmap tag is At least one of DefineBits, DefineBitsJPEG2, DefineJPEG3, DefineBitsLossless, DefineBitsLossless2, and JPEGTables tags Flash video data processing method according to the specification of the wireless terminal device comprising a. The method of claim 26, The sound tag is At least one of the DefineSound, SoundStreamBlock, SoundStreamHead, and SoundStreamHead2 tags Flash video data processing method according to the specification of the wireless terminal device comprising a. In the method for processing video data based on vector graphics for use in a wireless terminal device, Receiving video data based on vector graphics; Extracting the conversion information of the video data from the header information of the video; Using the conversion information, determining whether at least one of the offline conversion for wireless transmission and the online conversion according to the specification of the wireless terminal device is performed on the moving picture data; And Performing at least one conversion process of offline conversion and online conversion on the video data according to the determination result; Vector graphics-based video data processing method via a wireless network comprising a. The method of claim 31, wherein The conversion information is A method of processing video data based on vector graphics over a wireless network, the information indicating a result of at least one of offline and online conversion of video data. The method of claim 31, wherein The offline conversion process Extracting components constituting the video; Extracting a frame display component for displaying a character on the screen from the components; Extracting detailed components included in the frame display component; And Deleting the frame display component when the detail constituent component in the frame display component includes only a space arrangement component for placing a character in space; Vector graphics-based video data processing method via a wireless network comprising a. The method of claim 33, wherein Extracting Bezier curves from vector graphic based moving image data; Connecting at least three control points defining the Bezier curve to generate first and second straight lines that abut the Bezier curve; Connecting a midpoint of the first and second straight lines to generate a third straight line in contact with a Bezier curve; Dividing a Bezier curve into two Bezier curves based on the contact point between the Bezier curves and a third straight line; When the approximate distance corresponding to the intersection of the first straight line and the second straight line and the contact point on the Bezier curve by the third straight line is greater than or equal to the reference distance, the curve division process is recursively performed on the divided Bezier curve. Repeating with; And If the approximate distance for each Bezier curve divided through the curve division process is smaller than the reference distance, the corresponding Bezier curve using two straight lines connecting at least three control points for each divided Bezier curve Steps to replace Vector graphics-based video data processing method via a wireless network further comprising. The method of claim 33, wherein Extracting location information of a mouse and input information of a mouse button included in a vector graphic-based video; Extracting a plurality of state information for a video control button set to control a video displayed on a screen according to a position of a mouse and an input of a mouse button; Deleting, from among a plurality of states for the video control button, state information not corresponding to a direction button and an input button previously selected for video control in a wireless terminal device; Recognizing the position of the video control button displayed on the screen of the wireless terminal device, and configuring a button network to which the video control button is interconnected; Receiving at least one button operation among a direction button and an input button of the wireless terminal device; And Executing a video control button function of a corresponding position on the button network according to a button operation of at least one of a direction button and an input button of the wireless terminal device; Vector graphics-based video data processing method via a wireless network further comprising. The method of claim 33, wherein Extracting a plurality of frame information constituting a video; Calculating an operating characteristic value for each frame; Sequentially calculating a change amount of an operating characteristic value for two consecutive frames; And Deleting one of two frames with respect to a frame having a change amount of an operation characteristic value equal to or less than a reference change amount Vector graphics-based video data processing method via a wireless network further comprising. The method of claim 31, wherein The online conversion process Collecting information about a specification of the wireless terminal device; Extracting components constituting a moving picture to be transmitted to the wireless terminal device; When at least one component of color information, font information, image information, and sound information is included in the component, wireless to receive video data with respect to at least one of the color information, font information, image information, and sound information. Determining whether it corresponds to a specification of the terminal device; And When at least one of the color information, font information, image information, and sound information does not correspond to the specification of the wireless terminal device in the wireless terminal device, at least one of the corresponding color information, font information, image information, and sound information is wireless. Converting to meet the specifications of the terminal device Vector graphics-based video data processing method via a wireless network comprising a. In the method for processing macromedia flash video data for use in a wireless terminal device, Receiving flash video data; Extracting the conversion information of the flash video from the header information of the flash video; Using the conversion information, determining whether at least one of an offline conversion for wireless transmission and an online conversion according to a specification of a wireless terminal device is performed for a flash video; And Performing at least one conversion process of offline conversion and online conversion for the flash video according to the determination result; Flash video data processing method through a wireless network comprising a. The method of claim 38, The offline conversion process Extracting information about a tag constituting a flash video; Deleting only the ShowFrame tag when only the PlaceObject tag is included in the ShowFrame tag constituting the flash video; A shape tag constituting a flash video, the shape tag comprising: converting curved data included in the shape tag into linear data; And A button tag constituting a flash video, the method comprising: converting a mouse event into a button event of a wireless terminal device Flash video data processing method through a wireless network comprising a. The method of claim 38, The online conversion process Collecting information about a specification of the wireless terminal device; Extracting a tag constituting a flash video to be transmitted to the wireless terminal device; When at least one tag of a shape tag, a font tag, a bitmap tag, and a sound tag is included in a tag constituting the flash video, at least one of the shape tag, font tag, bitmap tag, and sound tag is flashed. Determining whether it corresponds to a specification of a wireless terminal device to receive video data; And At least one of the corresponding shape tag, font tag, bitmap tag and sound tag when at least one of the shape tag, font tag, bitmap tag and sound tag does not correspond to the specification of the wireless terminal device in the wireless terminal device Converting to correspond to the specifications of the wireless terminal device Flash video data processing method through a wireless network comprising a. In the system for being connected to the gateway for transmitting the vector graphics based video data to the wireless terminal device, converting the vector graphics based video data for use in the wireless terminal device, A database for storing video data based on vector graphics; An offline converter configured to perform offline conversion for wireless transmission by extracting video data based on vector graphics from the database; And A wired protocol communication device for transmitting vector graphic based video data converted through the offline converter to a gateway through a wired network. Including but not limited to: The offline converter is A component extracting unit extracting a frame display component for displaying a character on the screen among the components constituting the video; And A component control unit for deleting the frame display component when only the space arrangement component for arranging a character in space is included in the frame display component; Vector graphics based video data processing system comprising a. The method of claim 41, wherein The offline converter is Curve data converter to convert the curve data forming the video into straight data Vector graphics based video data processing system further comprising. The method of claim 42, wherein The curve data converter A curve data extraction unit for extracting Bezier curves from vector graphic based moving image data; Connecting at least three control points defining the Bezier curve to generate first and second straight lines that are in contact with the Bezier curves, and connecting midpoints of the first and second straight lines to generate a third straight line which is in contact with the Bezier curves. An approximate straight line generator; A curve dividing unit dividing a Bezier curve into two Bezier curves based on a contact point of the Bezier curve and a third straight line; When the approximate distance corresponding to the intersection of the first straight line and the second straight line and the contact point on the Bezier curve by the third straight line is greater than or equal to the reference distance, the curve division process is recursively performed on the divided Bezier curve. Curve division control to repeat with; And When the approximate distance is smaller than the reference distance, a straight line data processing unit replacing two corresponding Bezier curves by using two straight lines connecting control points with respect to each divided Bezier curve. Vector graphics based video data processing system comprising a. The method of claim 41, wherein The offline converter is Event converting unit for converting a mouse event included in the video into a button event of the wireless terminal device Vector graphics based video data processing system further comprising. The method of claim 44, The event conversion unit A button selector for selecting a direction button and an input button among a plurality of buttons provided in the wireless terminal device; A state information control unit for deleting video button state information not corresponding to a direction button and an input button of the wireless terminal device in a plurality of states of a video button set to take an action by receiving location information of a mouse and input information of a mouse button. ; A button network configuration unit configured to recognize a location of a video button displayed on a screen of the wireless terminal device and to configure a network to which the video button is connected; And A video processor for selecting or executing a video button of a corresponding position on a network to which a video button is connected according to an operation of a direction button or an input button of the wireless terminal device. Vector graphics based video data processing system comprising a. The method of claim 41, wherein Frame control unit for deleting one frame among adjacent frames similar to a plurality of frames constituting a video Vector graphics based video data processing system further comprising. 47. The method of claim 46 wherein The frame control unit A frame extracting unit extracting a plurality of frame information constituting a video; An arithmetic processing unit for calculating an operation characteristic value of each frame and sequentially calculating an amount of change of the operation characteristic values for two consecutive frames; And Frame control unit for deleting one frame of two frames for a frame in which the change amount of the operation characteristic value is equal to or less than the reference change amount Vector graphics based video data processing system comprising a. The method of claim 41, wherein Delete list control which registers the component or frame to be deleted in the delete list and selects and deletes the component and frame registered in the delete list at regular intervals. Vector graphics based video data processing system further comprising. The method of claim 41, wherein Header control unit for recording the conversion result of the video data in the header information of the video data Vector graphics based video data processing system further comprising. A gateway system connected to a server for transmitting video data based on vector graphics, for converting and transmitting video data based on vector graphics for use in a wireless terminal device, An offline conversion unit for performing offline conversion for wireless transmission by extracting video data based on vector graphics transmitted from a server; And A wireless protocol communication device for transmitting vector graphic based video data converted through the offline conversion unit to a user's wireless terminal device through a wireless network. Including but not limited to: The offline converter is A component extracting unit extracting a frame display component for displaying a character on the screen among the components constituting the video; And A component control unit for deleting the frame display component when only the space arrangement component for arranging a character in space is included in the frame display component; Gateway system for processing video data based on vector graphics comprising a. A gateway system connected to a server for transmitting video data based on vector graphics, for converting and transmitting video data based on vector graphics for use in a wireless terminal device, A database containing information on specifications of the wireless terminal device; An on-line converter configured to perform on-line conversion to process the vector graphic-based video data transmitted from the server according to the specification of the wireless terminal device; And A wireless protocol communication device for transmitting vector graphic based video data converted through the online conversion unit to a user's wireless terminal device through a wireless network. Including but not limited to: The online conversion unit A component extracting unit which extracts a component constituting a moving picture to be transmitted to the wireless terminal device; A color conversion unit for converting a color component representing color information among color components constituting the moving image into color information processable according to a specification of the wireless terminal device; A font converting unit for decomposing the font component and converting the font component into shape information corresponding to the specification of the wireless terminal apparatus when the font component representing the font information among the components constituting the moving picture is not a font inherent in the wireless terminal apparatus; An image conversion unit for converting an image component representing image information among the components constituting the moving image into pixel information processable according to a specification of the wireless terminal device; And At least one of sound converting units for converting sound components representing sound information into sound information which can be processed according to the specification of the wireless terminal device among the components constituting the moving picture; Gateway system for processing video data based on vector graphics comprising a. The method of claim 51, Header control unit for recording the conversion result of the video data into the header information of the video Gateway system for processing video data based on vector graphics further comprising a. A gateway system connected to a server for transmitting video data based on vector graphics, for converting and transmitting video data based on vector graphics for use in a wireless terminal device, A database containing information on specifications of the wireless terminal device; A conversion determination unit for extracting conversion information and determining a conversion result of the vector graphic-based moving image data transmitted from a server; An offline converter configured to perform offline conversion for wireless transmission on the vector graphic-based video data which has not been subjected to offline conversion according to the determination result; An on-line converter configured to perform on-line conversion so that the video data based on the off-line conversion is processed by the wireless terminal device according to the specification of the wireless terminal device; And A wireless protocol communication device for transmitting vector graphic based video data converted through the offline converter or the online converter to a user's wireless terminal device through a wireless network. Including but not limited to: The offline converter is A component extracting unit extracting a frame display component for displaying a character on the screen among the components constituting the video; And A component control unit for deleting the frame display component when only the space arrangement component for arranging a character in space is included in the frame display component; Including, The online conversion unit A component extracting unit which extracts a component constituting a moving picture to be transmitted to the wireless terminal device; A color conversion unit for converting a color component representing color information among color components constituting the moving image into color information processable according to a specification of the wireless terminal device; A font converter which decomposes the font component and converts the font component into shape information corresponding to the specification of the wireless terminal apparatus when the font component representing font information is not a font inherent in the wireless terminal apparatus; An image conversion unit for converting an image component representing image information among the components constituting the moving image into pixel information processable according to a specification of the wireless terminal device; And At least one of sound converting units for converting sound components representing sound information into sound information which can be processed according to the specification of the wireless terminal device among the components constituting the moving picture; Gateway system for processing video data based on vector graphics comprising a. A system for converting video data based on vector graphics transmitted from a gateway according to a specification of a wireless terminal device, A memory containing information about a specification of the wireless terminal device; A transformation determination unit configured to determine transformation results by extracting transformation information on the vector graphic based video data transmitted from the gateway; An on-line converter configured to perform on-line conversion to process video data for which the on-line conversion is not performed according to the specification of the wireless terminal device according to the determination result; A video controller which processes a vector graphic-based video data converted through the on-line converter so that a user can recognize the video data; And A display unit for displaying video data on the screen according to the operation of the video controller Including but not limited to: The online conversion unit A component extracting unit which extracts a component constituting a moving picture to be transmitted to the wireless terminal device; A color conversion unit for converting a color component representing color information among color components constituting the moving image into color information processable according to a specification of the wireless terminal device; A font converter which decomposes the font component and converts the font component into shape information corresponding to the specification of the wireless terminal apparatus when the font component representing font information is not a font inherent in the wireless terminal apparatus; An image conversion unit for converting an image component representing image information among the components constituting the moving image into pixel information processable according to a specification of the wireless terminal device; And At least one of sound converting units for converting sound components representing sound information into sound information which can be processed according to the specification of the wireless terminal device among the components constituting the moving picture; Wireless terminal device for processing video data based on the vector graphics comprising a. 55. The method of claim 54, The video controller A parsing processor configured to parse video data to display the online converted video on a screen; And Rendering processor that visualizes video data for user recognition Wireless terminal device for processing video data based on the vector graphics comprising a. In order to convert the curve data included in the vector graphic-based moving picture data into linear data for use in a wireless terminal device, a program of instructions that can be executed by the digital processing device is tangibly implemented and read by the digital processing device. In the recording medium which can be, The data conversion method, Extracting Bezier curves from vector graphic based moving image data; Connecting at least three control points defining the Bezier curve to generate first and second straight lines that abut the Bezier curve; Connecting a midpoint of the first and second straight lines to generate a third straight line in contact with a Bezier curve; Dividing a Bezier curve into two Bezier curves based on the contact point between the Bezier curves and a third straight line; When the approximate distance corresponding to the intersection of the first straight line and the second straight line and the contact point on the Bezier curve by the third straight line is greater than or equal to the reference distance, the curve division process is recursively performed on the divided Bezier curve. Repeating with; And If the approximate distance for each Bezier curve divided through the curve division process is smaller than the reference distance, the corresponding Bezier curve using two straight lines connecting at least three control points for each divided Bezier curve Steps to replace Computer recording medium comprising a. In order to convert the mouse event included in the vector graphic-based moving image data to the keypad event of the wireless terminal device for use in the wireless terminal device, a program of instructions that can be executed by the digital processing device is tangibly embodied. A recording medium readable by a device, The event conversion method, Extracting location information of a mouse and input information of a mouse button included in a vector graphic-based video; Extracting a plurality of state information for a video control button set to control a video displayed on a screen according to a position of a mouse and an input of a mouse button; Deleting, from among a plurality of states for the video control button, state information not corresponding to a direction button and an input button previously selected for video control in a wireless terminal device; Recognizing the position of the video control button displayed on the screen of the wireless terminal device, and configuring a button network to which the video control button is interconnected; Receiving at least one button operation among a direction button and an input button of the wireless terminal device; And Executing a video control button function of a corresponding position on the button network according to a button operation of at least one of a direction button and an input button of the wireless terminal device; Computer recording medium comprising a. In order to reduce the frame data included in the vector graphic-based moving picture data for use in a wireless terminal device, a program of instructions that can be executed by the digital processing device is tangibly implemented and can be read by the digital processing device. In the recording medium, The frame data reduction method, Extracting a plurality of frame information constituting a video; Calculating an operating characteristic value for each frame; Sequentially calculating a change amount of an operating characteristic value for two consecutive frames; And Deleting one of two frames with respect to a frame having a change amount of an operation characteristic value equal to or less than a reference change amount Computer recording medium comprising a. In order to reduce the vector graphic-based moving picture data for use in a wireless terminal device, a program of instructions that can be executed by the digital processing device is tangibly implemented, and in the recording medium that can be read by the digital processing device, The video data reduction method, Extracting information about components constituting the video; Extracting a frame display component for displaying a character on a screen from the components constituting the video; And Deleting only the frame display component if only the space layout component for arranging a character in space is included in the frame display component. Computer recording medium comprising a. In order to reduce the Macromedia Flash video data for use in a wireless terminal device, a program of instructions that can be executed by the digital processing device is tangibly implemented, and in the recording medium that can be read by the digital processing device, The flash video data reduction method, Extracting information about a tag constituting a flash video; Deleting only the ShowFrame tag when only the PlaceObject tag is included in the ShowFrame tag constituting the flash video; A shape tag constituting a flash video, the shape tag comprising: converting curved data included in the shape tag into linear data; And A button tag constituting a flash video, the method comprising: converting a mouse event into a button event of a wireless terminal device Computer recording medium comprising a. In order to convert the vector graphic-based video data for use in the wireless terminal device according to the specification of the wireless terminal device, a program of instructions that can be executed by the digital processing device is tangibly implemented and read by the digital processing device. In the recordable medium, The conversion method of the video data, Collecting information about a specification of the wireless terminal device; Extracting components constituting a moving picture to be transmitted to the wireless terminal device; When at least one component of color information, font information, image information, and sound information is included in the component, wireless to receive video data with respect to at least one of the color information, font information, image information, and sound information. Determining whether it corresponds to a specification of the terminal device; And When at least one of the color information, font information, image information, and sound information does not correspond to the specification of the wireless terminal device in the wireless terminal device, at least one of the corresponding color information, font information, image information, and sound information is wireless. Converting to meet the specifications of the terminal device Computer recording medium comprising a. In order to process macromedia flash video data for use in a wireless terminal device according to the specification of the wireless terminal device, a program of instructions that can be executed by the digital processing device is tangibly embodied and can be read by the digital processing device. In a recording medium, The flash video data processing method, Collecting information about a specification of the wireless terminal device; Extracting a tag constituting a flash video to be transmitted to the wireless terminal device; When at least one tag of a shape tag, a font tag, a bitmap tag, and a sound tag is included in a tag constituting the flash video, at least one of the shape tag, font tag, bitmap tag, and sound tag is flashed. Determining whether it corresponds to a specification of a wireless terminal device to receive video data; And At least one of the corresponding shape tag, font tag, bitmap tag and sound tag when at least one of the shape tag, font tag, bitmap tag and sound tag does not correspond to the specification of the wireless terminal device in the wireless terminal device Converting to correspond to the specifications of the wireless terminal device Computer recording medium comprising a. In order to process video data based on vector graphics for use in a wireless terminal device, a program of instructions that can be executed by a digital processing device is tangibly implemented, and in a recording medium that can be read by a digital processing device, The video data processing method, Receiving video data based on vector graphics; Extracting the conversion information of the video data from the header information of the video; And Performing at least one of an offline conversion process for wireless transmission and an online conversion process according to a specification of the wireless terminal device according to the conversion information according to the conversion information Computer recording medium comprising a. In order to process macromedia flash video data for use in a wireless terminal device, a program of instructions that can be executed by a digital processing device is tangibly implemented, and in a recording medium that can be read by a digital processing device, The flash video data processing method, Receiving flash video data; Extracting conversion information of flash video data from header information of the flash video; And Performing at least one of an offline conversion process for wireless transmission and an online conversion process according to a specification of the wireless terminal device with respect to the flash video data according to the conversion information; Computer recording medium comprising a.