KR100438858B1 - Method for progressing a speed receive of a data broadcasting - Google Patents

Abstract

A method of improving the reception speed of data broadcasting is published.

According to an aspect of the present invention, there is provided a method of improving a reception speed of data broadcasting, comprising: receiving a download data block (DDB) of data information selected by a user from a broadcasting station; Retrieving a section number from the received DDB and combining the associated sections; Filtering the section table ID, the version number and the section number; Searching and filtering a carousel ID, a module ID, and a block number in a section; Checking the CRC error of the filtered data information.

Accordingly, by detecting the carousel ID, the module ID, and the block number in the carousel section structure and preventing duplicate reception, the processing speed for the received data is remarkably improved.

Description

{METHOD FOR PROGRESSING A SPEED RECEIVE OF A DATA BROADCASTING}

The present invention relates to a method for improving the reception speed of data broadcasting, and more particularly, to prevent duplicate reception by using a carousel ID, a module ID, and a block number in a section structure received in a carousel method, thereby receiving received data. The present invention relates to a method of improving the reception speed of data broadcasts, in which the processing speed of the data broadcast is improved.

The rapid technological advances in PCs have speeded up information processing, and the rapid spread of the Internet has made it possible to speed up information transmission. On the one hand, PCs and TVs will be compatible with each other, but on the other hand, media consolidation will also take place at the same time. The integration method is to install TV function on PC and to add PC function to TV. This is already happening in part. Internet receiving TVs and PC receiving cards have already been developed and used, but it's hard to say that they still take advantage of both media.

Developed in an effort to address dissatisfaction with the traditional analog TV system, digital TV offers not only multi-channelization and crisp, clear picture quality, but also many advantages that analog TV cannot provide. In particular, by adding multimedia data to simple video and audio, a new electricity has been introduced to provide various types of multimedia data services through TV. In other words, the development direction of digital TV technology is shifting from the current high definition and high sound quality to the technology for providing various data services, and furthermore, the unidirectional service is evolving into interactive service technology using bidirectional channels. .

Two-way data service means a data service in which a viewer's input is delivered to a broadcaster and thus receives a broadcast service.The two-way data service is configured to receive a two-way data service through a modem, a dedicated line, and so on. Not only can you receive popular rankings (voting), audience rating surveys, popularity polls for people on the air, surveys, home shopping, etc., but you can also connect external information providers to implement more interactive services. It is possible.

Among these data services, data services connected to specific programs and independent data services are generally implemented through one-way services such as data broadcast. However, interactive services may be interactive at any point in time. In order to enable the data, a data carousel method that repeatedly provides data having an expiration date is additionally used.

1 is a diagram illustrating a transmission hierarchy diagram of digital broadcasting including data broadcasting.

As shown in FIG. 1, in digital broadcasting, a transport stream is used as a basic transmission unit, and audio / video is combined and processed in a PES (Packetized Elementary Stream) format, and MPE, which is a PSI and SI information and a data transmission method, is processed. (Multi Protocol Encapsulation) and carousel are recombined and processed in units called sections.

2 is a flowchart illustrating a general section filtering method.

As shown in FIG. 2, when a user requests a predetermined data broadcast (S200), when a user receives a carousel from a broadcasting station, sections are combined by checking the section structure of each carousel (S210). Then, the table ID recorded in the section structure is filtered (S220), the version number is filtered (S230), and the section number is filtered (S240).

Then, CRC error correction is performed (S250) and stored in a buffer (S260).

However, according to the conventional section filtering method as described above, there is a problem in that a predetermined data is often received redundantly, and thus the processing of the received data is inefficient.

The present invention, in order to effectively solve the above-described problems of the prior art, by adding a carousel ID, a module ID and a block number assigned a unique number to the section structure of the DDB (Download Data Block) to prevent duplicate reception of data in the filter unit. The purpose of the present invention is to provide a method of improving a reception speed in data broadcasting in which a processing speed of received data is improved.

1 is a diagram illustrating a transmission hierarchy diagram of digital broadcasting including data broadcasting.

2 is a flow chart illustrating a general section filtering method.

Figure 3 is a schematic diagram showing an image receiving apparatus according to a preferred embodiment of the present invention.

4 is a view showing a typical carousel structure.

5 is a flowchart illustrating a method of filtering a section according to an exemplary embodiment of the present invention.

<Description of reference numerals appearing in the drawing>

300: filter 310: tuner

320: channel selector 330: filter

340: demultiplexer 350: buffer

360: service data buffer 370: audio / video decoder

380: output unit 390: data output control unit

400: service request unit 410: program change request unit

According to an aspect of the present invention, there is provided a method of improving a reception speed of a data broadcast according to the present invention, the method comprising: receiving a download data block (DDB) of data information selected by a user from a broadcast station;

Retrieving a section number from the received DDB and combining the associated sections;

Filtering the table ID, version number and section number of the section;

Searching and filtering the carousel ID, module ID, and block number in the section;

Checking the CRC error of the filtered data information.

Hereinafter, a method of improving a reception speed of data broadcasting according to an exemplary embodiment of the present invention will be described in detail with reference to FIGS. 3 to 5.

3 is a schematic diagram showing an image receiving apparatus according to an exemplary embodiment of the present invention.

As shown in FIG. 3, when the broadcaster channel is selected by the viewer through the channel selector 320, the tuner 310 transmits a specific broadcast station selected from the transport streams transmitted from the broadcast stations under the control of the processor 300. Select the stream to receive. The filter unit 330 filters the carousel ID, the module ID, and the block ID together with the table ID, the version number, and the section number of the received transport stream. The demultiplexer 340 receives a transport stream packet of a specific broadcasting station, extracts audio / video data for a specific program, and service data transmitted in a carousel manner, respectively, to the buffer 350 and the service data buffer 360. Save temporarily. The audio / video decoder 370 decodes the extracted audio / video data and outputs the same through the output unit 380.

The data output controller 390 controls the output of the extracted service data and outputs it to the output unit 380.

The service requesting unit 400 receives a data service related to a program from a viewer and requests the processing unit 300, and the program change requesting unit 410 requests a change from a viewer to a second program from another current program. Receives the request to the processing unit 300.

On the other hand, the processor 300 analyzes the digital set-top (DST) of the extracted service data and operates a preset application according to a preset method.

4 is a view showing a typical carousel structure.

As shown in FIG. 4, the structure of the carousel is composed of a block that is a minimum unit, a module in which a plurality of blocks are assembled, and a group in which a plurality of modules are combined. In addition, the unit to which the group belongs is a layer.

In this case, the block is a unit of a download data block (DDB) that contains the actual transmission data, and has the greatest influence on the reception speed in the carousel transmission method.

The following shows the section structure of the DDB according to the present invention.

DSMCC_DDB_section ()

table_id

section_syntax-indicator

private_indicator

reserved

section_length

table_id_extension

reserved

version_number

current_next_indicator

section_number

last_section_number

downloadld

moduleld

blockNumber

CRC_32

As described above, the section structure of the DDB has a download ID, a module ID, and a block number ID, each of which has a unique value corresponding to a carousel ID, a module ID, and a block number ID. It is specified by value.

5 is a flow chart illustrating a method of filtering sections in accordance with one preferred embodiment of the present invention.

As shown in FIG. 5, when a viewer selects a predetermined data broadcast and receives a reception request (S510), the viewer receives a carousel from a broadcasting station, checks section information, and combines the associated sections (S520).

Then, the table ID included in the section structure is filtered (S530), the version number is filtered (S540), and the section number is filtered (S550).

Then, the carousel section structure is searched for carousel ID filtering (S560), the module ID is filtered (S570), and the block ID is filtered (S580). In this case, the same data is not repeatedly received by detecting control information of the carousel ID, the module ID, and the block ID for the program selected by the user. Therefore, the load of the software for processing the received transport stream is reduced, the reception speed is improved, and the system is also stable.

Then, CRC error correction is performed, and then temporarily stored in a buffer (S590).

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. . Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

As described above, according to the method of improving the reception speed of the data broadcast of the present invention, by detecting the carousel ID, the module ID, and the block number in the carousel type section structure, the reception is prevented by receiving duplicated reception. There is an effect that the processing speed for the data is dramatically improved.

Claims (1)

Receiving a DDB of data information selected by a user from a broadcasting station; Retrieving a section number from the received DDB and combining the associated sections; Filtering the table ID, version number and section number of the section; Searching and filtering the carousel ID, module ID, and block number in the section; And checking a CRC error of the filtered data information.