KR100797393B1 - Terrestrial DMB Data Broadcasting Server and its Method using Vector Graphics, and Terrestrial DMB Receiving System and its Method - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a terrestrial DMB data broadcasting server and method using vector graphics, and to a terrestrial DMB receiving system and method thereof.

2. The technical problem to be solved by the invention

The present invention provides terrestrial DMB using vector graphics, which provides various high quality data broadcasting in DMB broadcasting by providing DMB data broadcasting contents using vector graphic technology (for example, Scalable Vector Graphics (SVG), etc.). An object of the present invention is to provide a data broadcasting server and a method thereof, and a terrestrial DMB receiving system and method thereof.

3. Summary of Solution to Invention

According to the present invention, in a terrestrial DMB data broadcasting server using vector graphics, a multimedia object transfer (MOT) object is added by adding "header information informing that the content is vector graphics based" to the vector graphics based data broadcasting contents to be transmitted. MOT object generating means for generating; MOT object transmitting means for transmitting the generated MOT object to the terrestrial DMB transmitting apparatus according to a MOT protocol standard under the control of a scheduling means; And the scheduling means for controlling the MOT object transmitting means according to a predetermined data broadcasting schedule.

4. Important uses of the invention

The present invention is used for terrestrial DMB transmission and reception system.

Terrestrial DMB, Data Broadcasting, MOT, SVG, Vector Graphics, SVG Parser, SVG Renderer, Data Broadcast Browser

Description

Terrestrial DMB Data Broadcasting Server and its Method using Vector Graphics, and Terrestrial DMB Receiving System and its Method using Vector Graphics

1 is a configuration diagram of an embodiment of a terrestrial DMB transmission / reception system for providing a data broadcasting service using SVG according to the present invention;

2 is a detailed configuration diagram of an embodiment of the SVG-based data broadcasting server of FIG. 1 according to the present invention;

3 is a diagram illustrating an embodiment of a field of a MOT header core (Header Core) for indicating a property of a content when transmitting data broadcasting content from a terrestrial DMB to a MOT according to the present invention;

4 is a detailed configuration diagram of an SVG-based data broadcasting browser in an SVG-based terrestrial DMB receiving system (receiving terminal) according to the present invention.

* Explanation of symbols on the main parts of the drawing

10: SVG-based terrestrial DMB transmission system 11: SVG-based data broadcasting server

12: terrestrial DMB transmitting apparatus 13: SVG-based terrestrial DMB receiving terminal

131: terrestrial DMB demultiplexer 132: SVG-based data broadcasting browser

21: SVG content management unit 22: MOT object generation unit

23: MOT object transmitter 24: Scheduler

41: XML Parser 42: SVG Parser

43: SVG Renderer

The present invention relates to a terrestrial DMB data broadcasting server and method thereof using vector graphics, and to a terrestrial DMB receiving system and method thereof according to the present invention, and more particularly, to a vector graphic technique (for example, Scalable Vector Graphics (SVG), etc.). A terrestrial DMB data broadcasting server and method using vector graphics, and a terrestrial DMB receiving system and method thereof, which provide various high quality data broadcasting in DMB broadcasting by providing DMB data broadcasting contents using will be.

Terrestrial digital multimedia broadcasting (DMB) aims to provide a multimedia service including CD-quality audio and high-quality video in a mobile environment.

To this end, terrestrial DMB uses MPEG-4 Advanced Video Coding (AVC) and MPEG-4 Bit Sliced Arithmetic Coding (BSAC) as video and audio coding standards, respectively, based on the Eureka-147 Digital Audio Broadcasting (DAB) standard. In addition, MPEG-2 and MPEG-4 systems are used for synchronization and multiplexing. Coded Orthogonal Frequency Division Multiplexing (COFDM) transmission technology and Reed Solomon (RS) codes and convolutional interleavers are used to improve reception in mobile environments.

In addition, the terrestrial DMB can transmit general data such as Hypertext Markup Language (HTML) through a stream mode or packet mode data channel. Based on this, the terrestrial DMB currently defines data broadcasting standards such as Broadcasting Web Service (BWS), Slideshow, and Electronic Program Guide (EPG).

However, modern web sites use various technologies such as Flash to express various types of information, whereas content creators use HTML and JPG images defined in terrestrial DMB standard broadcasting web services (BWS) and slideshows. There is a problem that it is difficult to express the information of the desired form.

The present invention has been proposed to solve the above problems, and provides various high quality data broadcasting in DMB broadcasting by providing DMB data broadcasting contents using vector graphics technology (for example, Scalable Vector Graphics (SVG), etc.). It is an object of the present invention to provide a terrestrial DMB data broadcasting server and method using vector graphics, and a terrestrial DMB receiving system and method thereof.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. It will also be appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

The present invention for achieving the above object is, in the terrestrial DMB data broadcasting server using the vector graphics, MOT ("header information informing that it is vector graphics based content") is added to the vector graphics data broadcasting contents to be transmitted. MOT object generating means for generating a Multimedia Object Transfer) object; MOT object transmitting means for transmitting the generated MOT object to the terrestrial DMB transmitting apparatus according to a MOT protocol standard under the control of a scheduling means; And the scheduling means for controlling the MOT object transmitting means according to a predetermined data broadcasting schedule. The present invention may further include vector graphic content management means for importing the vector graphic-based data broadcasting content from the database (DB) under the control of the scheduling means, wherein the scheduling means comprises: the data broadcasting; And performing a function of controlling the vector graphic content management means according to a schedule.

On the other hand, the present invention, in the terrestrial DMB data transmission method using the vector graphics, DMB data to be transmitted according to the DMB data broadcasting schedule from the database (DB) storing the DMB data broadcasting content generated based on the vector graphics A content management step of bringing broadcast content; A MOT object generation step of generating a multimedia object transfer (MOT) object by adding "header information indicating that the content is based on vector graphics" to the DMB data broadcasting content obtained through the content management step; And transmitting the generated MOT object to the terrestrial DMB transmitting apparatus according to the MOT protocol standard according to the DMB data broadcasting schedule.

In the present invention, in the terrestrial DMB receiving system for receiving content based on vector graphics, the present invention demultiplexes a terrestrial DMB ensemble transmitted through a broadcasting network to perform "vector graphic based data broadcasting content" and audio / video. Demultiplexing means for separating into; Data broadcast browsing means for parsing and rendering of the "vector graphics based data broadcast content" separated by said demultiplexing means; And A / V reproducing means for processing and reproducing audio / video separated by the demultiplexing means according to the DMB standard.

On the other hand, the present invention, a method for receiving vector graphics-based content in a terrestrial DMB receiving system, comprising: an ensemble receiving step of receiving a terrestrial DMB ensemble transmitted through a broadcasting network; A vector graphics-based content separation step of demultiplexing the received terrestrial DMB ensemble and separating "vector graphics based data broadcasting content" using header information of a MOT object in the demultiplexing process; And a data broadcast browsing step of parsing and rendering in order to provide the separated "vector graphic data broadcasting content" to a user.

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The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating an embodiment of an SVG-based terrestrial DMB transmission / reception system for providing a data broadcasting service using SVG according to the present invention. As the system is described, the methods performed within the system will also be described.

In the scalable vector graphics (SVG) based terrestrial DMB transmission system 10 according to the present invention, an SVG based data broadcasting server 11 and a terrestrial DMB transmission apparatus 12 are illustrated in FIG. 1. It comprises a, and performs the function of transmitting the SVG-based data broadcast content using a protocol such as multimedia object transfer (Multimedia Object Transfer).

Here, the terrestrial DMB transmitting apparatus 12 includes a service multiplexer, an ensemble multiplexer, an OFDM encoder, and a transmitter.

The SVG-based data broadcasting content output from the SVG-based data broadcasting server 11 is transmitted to the service multiplexer of the terrestrial DMB transmitting apparatus 12 and finally transmitted to the air through the terrestrial DMB transmitting apparatus 12. .

Meanwhile, hereinafter, an SVG based terrestrial DMB receiving system (terminal) 13 for receiving SVG based contents according to the present invention will be described. In addition, a method of receiving SVG-based content in the SVG-based terrestrial DMB receiving system (terminal) 13 will be described together without a separate flowchart.

The SVG-based terrestrial DMB receiving system (terminal) 13 includes a terrestrial DMB demultiplexer 131, an SVG-based data broadcasting browser 132, and an audio / video player (A / V Player) 133. . Here, the SVG based data broadcasting browser 132 is added for displaying the SVG based data broadcasting content.

First, the terrestrial DMB demultiplexer 131 receives a terrestrial DMB ensemble transmitted from a transmitting side through a broadcasting network, and demultiplexes it into data "SVG-based data broadcasting contents" and audio / video, which are data. ("SVG-based data broadcasting content") is transmitted to the SVG-based data broadcasting browser 132, and audio / video is transmitted to the audio / video player (A / V Player) 133. The terrestrial DMB demultiplexer 131 analyzes header information of the MOT object in the process of demultiplexing the terrestrial DMB ensemble, thereby confirming that the MOT object is content generated according to a vector graphic technology. The header information here includes a 'Content Type' indicating that the MOT object is text data and a 'Content Sub Type' indicating that the MOT object is content generated according to a vector graphic technology.

Next, the SVG-based data broadcasting browser 132 performs parsing and rendering to provide the user with "vector graphic data broadcasting content" (data) separated and transmitted by the terrestrial DMB demultiplexer 131.

The audio / video (A / V) reproducing unit 133 processes and reproduces the audio / video transmitted by the terrestrial DMB demultiplexer 131 according to the DMB standard.

FIG. 2 is a detailed configuration diagram of an SVG-based data broadcasting server of FIG. 1 according to the present invention. FIG. 2 is a data broadcasting server for transmitting SVG-based content in a multimedia object transfer (MOT) protocol in a terrestrial DMB. Indicates. Hereinafter, the SVG-based data broadcasting server will be described, and a terrestrial DMB data transmission method using SVG will also be described.

The SVG-based data broadcasting server 11 includes an SVG content manager 21, a MOT object generator 22, a MOT object transmitter 23, and a scheduler 24.

First, the SVG content manager 21 performs a function of importing necessary SVG-based data broadcast content from the database (DB) 20 according to a predetermined data broadcast schedule. That is, the SVG content manager 21 performs a function of importing SVG-based data broadcasting content from the database DB under the control of the scheduler 24.

The MOT object generation unit 22 attaches a MOT header core and a header extension to SVG-based data broadcasting content that the SVG content management unit 21 obtains from the database (DB) 20. Make it an Object. Here, the description of the field value of the header core will be described in detail with reference to FIG. 3.

The MOT object transmitter 23 performs a MOT object data group generation and packet generation process on the MOT object generated by the MOT object generator 22 and then transmits to the terrestrial DMB transmission apparatus 12. send. That is, the MOT object transmitter 23 transmits the MOT object generated by the MOT object generator 22 to the terrestrial DMB transmitter 12 according to the MOT protocol standard under the control of the scheduler 24. .

Here, the scheduler 24 controls the SVG content manager 21 and the MOT object transmitter 23 to transmit the SVG based data broadcast content according to a specified time schedule.

This transmission process is an embodiment of the case of transmitting the SVG-based data broadcasting content in the MOT standard of the terrestrial DMB, when using a different protocol, the process and the content follows the standard of the protocol.

3 is a diagram illustrating an embodiment of a field of a MOT header core for indicating a property of content when transmitting data broadcasting content from a terrestrial DMB to a MOT according to the present invention.

3 illustrates field values of a MOT header core to be designated when the MOT object generation unit 22 generates a MOT object from SVG based data broadcasting content.

The MOT header core is referred to as body size 31, header size 32, content type 33, and content sub type 34. Consists of fields.

Herein, the content type 33 is set to '000001' to indicate that the MOT object is text data, and the content sub type 34 is unique to indicate that the MOT object is an SVG file. 8 binary digits are defined and set (currently, SVG is not defined in the terrestrial DMB standard, for example, HTML file uses '00000010').

4 is a detailed configuration diagram of an SVG-based data broadcasting browser in an SVG-based terrestrial DMB receiving system (receiving terminal) according to the present invention, and shows an SVG-based data broadcasting browser displaying SVG-based data broadcasting contents.

As shown in FIG. 4, the SVG-based data broadcasting browser 132 includes an Extensible Markup Language (XML) parser 41, an SVG parser 42, and an SVG renderer 43. It performs a function of providing broadcast content.

The SVG object (that is, "SVG-based data broadcasting content") separated through the demultiplexing process by the terrestrial DMB demultiplexer 131 is interpreted through the XML parser 41 and the SVG parser 42. The SVG renderer 43 provides the user with a display.

In detail, it is as follows. First, the XML parser 41 performs XML document parsing on "SVG-based data broadcast content" separated by the terrestrial DMB demultiplexer 131. Next, the SVG parser 42 performs vector graphic parsing on "SVG-based data broadcasting content." The SVG renderer 43 then performs vector graphics rendering on the results parsed by the XML parser 41 and the SVG parser 42.

The present invention is not only limited to SVG, but may be equally applicable to other similar data contents (for example, Macromedia Flash) using vector graphics.

As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form. Since this process can be easily implemented by those skilled in the art will not be described in more detail.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

As described above, the present invention has an effect of allowing a content provider to provide content using more various forms of presentation means.

In addition, the present invention by using a variety of vector graphics representations provided by SVG, it is possible to create a rich form of data broadcasting content through a variety of methods that were not possible based on the existing HTML or raster image, in particular with the characteristics Therefore, in the terrestrial DMB receiving terminal having various sizes and resolutions, there is an effect of providing data broadcasting contents having a certain quality regardless of the type of the receiving terminal. That is, the present invention has the effect of providing data broadcasting contents of constant quality regardless of the size or resolution of the display device of the terrestrial DMB receiving terminal.

In addition, the present invention, by using a vector graphics having a generally smaller data size than the conventional raster (Raster) graphic representation method, it is effective to efficiently use the terrestrial DMB data broadcasting channel having a relatively narrow bandwidth have.

In addition, the present invention, based on the above technical effects, there is an effect that can provide a richer and more diverse data broadcasting content to terrestrial DMB viewers.

Claims (13)

In the terrestrial DMB data broadcasting server using vector graphics, MOT object generation means for generating a multimedia object transfer (MOT) object by adding "header information indicating that the content is vector graphics based" to the vector graphics based data broadcasting content to be transmitted; MOT object transmitting means for transmitting the generated MOT object to the terrestrial DMB transmitting apparatus according to a MOT protocol standard under the control of a scheduling means; And The scheduling means for controlling the MOT object transmitting means according to a predetermined data broadcasting schedule Terrestrial DMB data broadcasting server using a vector graphics including a. The method of claim 1, According to the control of the scheduling means, further comprising a vector graphics content management means for importing the vector graphics-based data broadcast content from the database (DB), The scheduling means, And performing a function of controlling the vector graphic contents management means according to the data broadcasting schedule. The method according to claim 1 or 2, The header information in the MOT object generating means is Body Size, Header Size, 'Content Type' indicating that the MOT object is text data, and 'Content Subtype' indicating that the MOT object is content created according to vector graphics technology ( Terrestrial DMB data broadcasting server using vector graphics, characterized in that it comprises a Content Sub Type. The method of claim 3, wherein The data broadcast content, A terrestrial DMB data broadcasting server using vector graphics, which is data broadcasting content generated using Scalable Vector Graphics (SVG) technology. In the terrestrial DMB data transmission method using vector graphics, A content management step of bringing the DMB data broadcasting contents to be transmitted according to the DMB data broadcasting schedule from a corresponding database storing the DMB data broadcasting contents generated based on the vector graphics; A MOT object generation step of generating a multimedia object transfer (MOT) object by adding "header information indicating that the content is based on vector graphics" to the DMB data broadcasting content obtained through the content management step; And A MOT object transmitting step of transmitting the generated MOT object to a terrestrial DMB transmitting apparatus according to the MOT protocol standard according to the DMB data broadcasting schedule Terrestrial DMB data transmission method using a vector graphics comprising a. The method of claim 5, The header information in the MOT object creation step is Body Size, Header Size, Content Type to indicate that the MOT object is text data, Content Sub Type to indicate that the MOT object is content created according to vector graphics technology. Terrestrial DMB data transmission method using a vector graphics comprising a. The method according to claim 5 or 6, The DMB data broadcast content, A terrestrial DMB data transmission method using vector graphics, which is DMB data broadcasting content generated using Scalable Vector Graphics (SVG) technology. In the terrestrial DMB receiving system for receiving content based on vector graphics, Demultiplexing means for demultiplexing the terrestrial DMB ensemble transmitted through the broadcasting network and separating it into "vector graphic-based data broadcasting content" and audio / video; Data broadcast browsing means for parsing and rendering of the "vector graphics based data broadcast content" separated by said demultiplexing means; And A / V reproducing means for processing and reproducing audio / video separated by the demultiplexing means according to the DMB standard Terrestrial DMB receiving system for receiving vector graphics-based content comprising a. The method of claim 8, The demultiplexing means, In the process of demultiplexing the terrestrial DMB ensemble, the header information of the MOT object is analyzed to confirm that the corresponding MOT object is a content generated according to a vector graphic technology. Terrestrial DMB receiving system. The method according to claim 8 or 9, The data broadcast browsing means, XML parsing means for parsing XML (Extensible Markup Language) document with respect to "vector graphics based data broadcasting content" separated by said demultiplexing means; Vector graphics parsing means for vector graphics parsing of said "vector graphics based data broadcast content"; And Vector graphics rendering means for performing vector graphics rendering on the result parsed by the XML parsing means and the vector graphic parsing means Terrestrial DMB receiving system for receiving vector graphics-based content comprising a. In the method for receiving vector graphic-based content in a terrestrial DMB receiving system, An ensemble receiving step of receiving a terrestrial DMB ensemble transmitted through a broadcasting network; A vector graphics-based content separation step of demultiplexing the received terrestrial DMB ensemble and separating "vector graphics based data broadcasting content" using header information of a MOT object in the demultiplexing process; And Data broadcasting browsing step of parsing and rendering to provide the separated "vector graphics based data broadcasting content" to the user Method of receiving vector graphics based content in a terrestrial DMB receiving system comprising a. The method of claim 11, The header information is Terrestrial DMB reception comprising a 'Content Type' indicating that the MOT object is text data and a 'Content Sub Type' indicating that the MOT object is content generated according to a vector graphic technology. A method for receiving vector graphics based content in a system. The method according to claim 11 or 12, The data broadcasting browsing step, An XML parsing step of parsing XML (Extensible Markup Language) document on the "vector graphic based data broadcasting content" separated in the vector graphic based content separating step; A vector graphics parsing step of performing vector graphics parsing of the "vector graphics based data broadcasting content"; And A vector graphic rendering step of performing vector graphic rendering on the result parsed in the XML parsing step and the vector graphic parsing step. Method of receiving vector graphics based content in a terrestrial DMB receiving system comprising a.

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