KR100600819B1 - Digital data broadcasting emission system and control method for multiplexing program construction information - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a digital data broadcasting transmission system having a simple redundancy function of program configuration information and a control method thereof.

2. The technical problem to be solved by the invention

The present invention provides a digital data broadcasting receiver by generating and transmitting program configuration information used to normally reproduce digital data broadcasting without adding the program configuration information generating means by using the program configuration information generating function of the data encoding means in a redundant implementation. The purpose of the present invention is to provide a digital data broadcasting transmission system having a simple duplication function of program configuration information and a control method thereof, so that the digital data broadcasting can be stably received in the network.

3. Summary of Solution to Invention

The present invention provides a digital data broadcasting transmission system having a simple duplication function of program configuration information, comprising: organization information management means for managing organization information and encoded information; Program configuration information generating means for receiving the knitting information through a delivery control means and generating first program configuration information; Data encoding means for receiving encoding information through the transmission control means to encode content, and receiving organization information through the transmission control means to generate second program configuration information; The transmission control means for controlling the data encoding means to transfer content and encoding information to encode content and generate program configuration information as the program configuration information generating means does not operate normally; And multiplexing and outputting an audio / video transport stream, the first program configuration information generated by the program configuration information generating means and the data transmission stream encoded by the data encoding means, or modulating and transmitting the audio / video transport stream and the data encoding. And sending means for multiplexing and modulating the second program configuration information generated by the means and the encoded data transport stream.

4. Important uses of the invention

The present invention is used in digital data broadcasting transmission system.

Digital data broadcasting, program composition information, simple duplication, data encoder

Description

Digital data broadcasting emission system and control method having simple duplication function of program configuration information {Digital data broadcasting emission system and control method for multiplexing program construction information}             

1 is a configuration diagram of an embodiment of a digital data broadcasting transmission system having a conventional program configuration information duplication function;

2 is a configuration diagram of an embodiment of a digital data broadcasting transmission system having a simple redundancy function of program configuration information according to the present invention;

3 is a flowchart illustrating a simple duplication control method of program configuration information in a digital data broadcasting transmission system according to the present invention.

* Explanation of symbols for the main parts of the drawings

21: organization information management unit 22: program configuration information generation unit

24: content management unit 25: data encoding unit

26: MPEG-2 encoder 27: multiplexer

28: modulator 29: transmission control unit

The present invention relates to a digital data broadcasting transmission system having a simple redundancy function of program configuration information, and a control method thereof. More particularly, the program configuration information generation means of the data encoding means is used to implement a program configuration information generation means. The present invention relates to a digital data broadcasting transmission system having a simple redundancy function of program configuration information for generating and transmitting program configuration information used to normally reproduce digital data broadcasting without addition, and a control method thereof.

In one embodiment of the present invention, the simple duplication of the program configuration information means that the program configuration information generation function of the data encoding means is used to implement the duplication without the addition of the program configuration information generation means.

In general, digital data broadcasting refers to a broadcasting technology or a broadcasting service that transmits multimedia data including a graphic image, text, and an execution program through a broadcasting channel, so that a viewer receiving the same may use various additional information.

Currently, domestic and US terrestrial broadcasting uses the ACAP (Advanced Common Application Platform) digital data broadcasting standard established by the Advanced Television System Committee (ATSC) as a standard for digital data broadcasting.

The ACAP digital data broadcasting standard defines the content format and transmission standard of data. In this case, the transmission standard refers to a protocol such as an object carousel in order to transmit data, and a program specific information (PSI) / application information table (AIT) containing information necessary for receiving and playing encoded data. Contains specifications.

Next, a digital data broadcasting transmission system having a conventional program configuration information duplication function will be described with reference to FIG. 1.

As shown in FIG. 1, in the conventional digital data broadcasting transmission system having a program configuration information duplication function, a program information management unit 11 for managing program information used to generate program configuration information received from a program system or the like. A first program configuration information generation unit 12 for generating program configuration information using the organization information received from the organization information management unit 11, and a program using the organization information received from the organization information management unit 11. A second program configuration information generation unit 13 for generating configuration information, a content management unit 14 for managing content received from a content authoring system, etc. and encoding information used for encoding the content, and the content management unit 14 Receiving content and encoding information from the A data encoder (data server) 15 for encoding a content and outputting a data transport stream, and an MPEG-2 encoder (MPEG-2 encoder) for outputting an audio and video transport stream by encoding audio and video. (16), program configuration information generated by the first program configuration information generation unit 12 or program configuration information generated by the second program configuration information generation unit 13 and output by the data encoding unit 15; A multiplexer 17 for multiplexing the audio and video transport streams output from the data transport stream and the MPEG-2 encoder 16, and a modulated broadcast transport stream multiplexed by the multiplexer 17 for transmission to a transmitter. As the modulator 18 and the first program configuration information generator 12 do not operate normally, they are transferred to the second program configuration information generator 13. And a transmission control unit 19 for controlling the data encoder 15 to receive the content and the encoding information from the content management unit 14 and to output the data transport stream by encoding the content using the encoding information.

Here, the first program configuration information generation unit 12 and the second program configuration information generation unit 13 include a program and system information protocol (PSIP) server.

The program configuration information may include program and system information protocol (PSIP) information having guide information and system information about a broadcast program, PSI information used to receive a broadcast transport stream at a receiver, and a broadcast transport stream at a receiver. Contains AIT information used. In this case, the PSI information includes program association table (PAT) information and program map table (PMT) information.

Here, the program configuration information will be described in more detail. The PSIP information includes additional information irrelevant to the reproduction of a broadcast transport stream, so that the PSIP information does not affect the reproduction of audio, video, and data even if it is not transmitted to the receiver. It is.

However, if the PSI information is not transmitted to the receiver, the receiver cannot reproduce audio, video and data, and if the AIT information is not transmitted to the receiver, audio, video and data cannot be reproduced. In other words, the receiver is unable to receive not only audio and video but also data, which causes a broadcasting accident to output only a black TV screen.

Therefore, the PSI information and the AIT information must be included and transmitted in the broadcast transport stream, so that the receiver can receive and reproduce the broadcast transport stream normally by using the same.

The conventional digital data broadcasting transmission system having a program configuration information duplication function includes a first program configuration information generation unit 12 and a second program configuration information generation unit 13, that is, a program configuration information generation unit is duplicated. When an error occurs in one program configuration information generation unit, it is possible to switch to another program configuration information generation unit to transmit a desired broadcast transport stream.

However, adding expensive program configuration information generation unit for redundancy can put a heavy burden on operators.

Therefore, there is an urgent need for a digital data broadcasting transmission system and method capable of stably providing digital data broadcasting services while reducing the cost of redundancy.

The present invention has been proposed to meet the above-mentioned requirements, and the program configuration information generation function of the data encoding means is used for the redundant implementation to generate program configuration information used to normally reproduce digital data broadcasting without the addition of the program configuration information generating means. It is an object of the present invention to provide a digital data broadcasting transmission system having a simple duplication function of program configuration information and a control method thereof so that the digital data broadcasting reception apparatus can receive digital data broadcasting stably.

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. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

An apparatus of the present invention for achieving the above object is a digital data broadcasting transmission system having a simple duplication function of program configuration information, comprising: organization information management means for managing organization information and encoded information; Program configuration information generating means for receiving the knitting information through a delivery control means and generating first program configuration information; Data encoding means for receiving encoding information through the transmission control means to encode content, and receiving organization information through the transmission control means to generate second program configuration information; The transmission control means for controlling the data encoding means to transfer content and encoding information to encode content and generate program configuration information as the program configuration information generating means does not operate normally; And multiplexing and outputting an audio / video transport stream, the first program configuration information generated by the program configuration information generating means and the data transmission stream encoded by the data encoding means, or modulating and transmitting the audio / video transport stream and the data encoding. And transmission means for multiplexing and modulating the second program configuration information generated by the means and the encoded data transport stream.

On the other hand, the method of the present invention, in a simple duplication control method of the program configuration information in the digital data broadcasting transmission system, comprising the steps of: confirming the operation state of the program configuration information generating means in accordance with the receiving the knitting information and the encoding information; As a result of the checking, as the program configuration information generating means operates normally, the program configuration information generating means generates the first program configuration information using the knitting information, and the data encoding means encodes the content using the encoding information. Multiplexing with the audio / video transport stream and modulating and transmitting the same; And as a result of the checking, as the program configuration information generating unit does not operate normally, the data encoding unit encodes the content using the encoding information, and generates the second program configuration information using the knitting information. And modulating by multiplexing with the / video transport stream.

In addition, the present invention manages the program configuration information and the encoding information in separate databases, and unlike the conventional method in which the first and second program configuration information generating units and the data encoding units directly access the independent database, the program configuration is different. It manages the information and the encoding information in a single database, and transmits the program information to the program configuration information generation unit by directing the transmission control unit directly to the database, and transmits the program configuration information or program configuration information and encoding information to the data encoding unit. It is done.

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.

2 is a configuration diagram of an embodiment of a digital data broadcasting transmission system having a simple duplication function of program configuration information according to the present invention.

First, the organization information management unit 21 manages the organization information used to generate the program configuration information received from the organization system and the like and the encoding information used to encode the content.

The organization information manager 21 manages organization information including PSIP generation information and PSI / AIT generation information. In this case, the programming information may use information defined by the equipment developer itself, and may be described in the ATCP's Programming Metadat Communication Protocol (PMCP) standard defined for the exchange of interoperable PSIP / PSI information between digital broadcasting transmission system equipment. Information and PMCP can be extended to utilize definable AIT and data encoding information.

Then, the program configuration information generation unit 22 generates program configuration information using the knitting information received from the delivery control unit 29. In this case, the program configuration information includes PSIP information, PSI information, and AIT information.

The content manager 24 manages the content delivered from the content authoring system or the like.

In addition, the data encoder 25 (data server) 25 encodes the content received from the content management unit 24 by using the encoding information received from the delivery control unit 29, and outputs a data transmission stream. Program configuration information is generated and output using the organization information received from (29). In this case, the program configuration information includes PSI information and AIT information.

The MPEG-2 encoder 26 encodes audio and video to output an audio and video transport stream.

The multiplexer 27 outputs the program configuration information generated by the program configuration information generator 22 and the data transmission stream output from the data encoder 25 and the video output from the MPEG-2 encoder 26. And multiplexing the audio (AV) transport stream or multiplexing the data transport stream and the program configuration information output from the data encoder 25 and the audio and video transport stream output from the MPEG-2 encoder 26.

The modulator 28 modulates the broadcast transmission stream multiplexed by the multiplexer 27 and transmits the modulated broadcast transport stream to a transmitter (not shown).

In addition, the transmission control unit 29 transfers the knitting information and the encoding information received from the organization information management unit 21 to the data encoder 25 as the program configuration information generation unit 22 does not operate normally. It generates the configuration information, and controls the data encoder 25 to code the content received from the content manager 24 to output a data transport stream.

In addition, the transmission control unit 29 is a program management system for managing rough scheduling information of data broadcasting for digital data broadcasting transmission control, an audio / video transport stream and a data transport stream, and a PSIP / PSI / AIT transport stream. A multiplexing management system for generating and controlling multiplexing, a traffic management system for managing detailed scheduling information of broadcasted data for a day, and a corresponding broadcasting program to be transmitted accurately according to the broadcasting scheduling information. Automated control system (Automation) system, MPEG-2 (MPEG-2) equipment control device for controlling the equipment and the like.

On the other hand, the present invention is applied to a digital data broadcasting transmission system having a plurality of program configuration information generation unit, if an abnormality occurs in one program configuration information generation unit is transferred to the next program configuration information generation unit, and even this abnormality occurs any more If there is no program configuration information generation unit to be transferred, the program information may be controlled to generate program configuration information by transferring the knitting information to the data encoder.

3 is a flowchart illustrating a simple duplication control method of program configuration information in a digital data broadcasting transmission system according to the present invention.

First, as the program information (PSIP generation information and PSI / AIT generation information) and encoding information are received from the organization information management unit 21 (301), the operation state of the program configuration information generation unit 22 is checked (302). ).

When the result of the check 302, the program configuration information generation unit 22 operates normally, the received organization information is transmitted to the program configuration information generation unit 22, and the encoding information is transferred to the data encoding unit 25. (303, 304).

Then, the program configuration information generator 22 generates program configuration information by using the received organization information, and the data encoder 25 encodes content by using the received encoding information to generate a data transport stream. (305).

Thereafter, the generated program configuration information and data transport stream are multiplexed and modulated with the audio and video transport stream from the MPEG-2 encoder 26 to be transmitted to the transmitter for transmission (308).

On the other hand, if the result of the check 302, the program configuration information generation unit 22 does not operate normally, the received configuration information and encoding information is transmitted to the data encoder 25 (303, 306).

Then, the data encoder 25 generates program configuration information by using the received organization information, and generates a data transport stream by encoding content by using the received encoding information (307).

Thereafter, the generated program configuration information and data transport stream are multiplexed and modulated with the audio and video transport stream from the MPEG-2 encoder 26 to be transmitted to the transmitter for transmission (308).

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.

The present invention as described above, by using the program configuration information generation function of the data encoding means in a redundant implementation to generate and send the program configuration information used to normally reproduce digital data broadcasting without the addition of program configuration information generating means, digital data The broadcast receiving device can stably receive digital data broadcasting.

Claims (4)

In a digital data broadcasting transmission system having a simple duplication function of program configuration information, Organization information management means for managing organization information and encoding information; Program configuration information generating means for receiving the knitting information through a delivery control means and generating first program configuration information; Data encoding means for receiving encoding information through the transmission control means to encode content, and receiving organization information through the transmission control means to generate second program configuration information; The transmission control means for controlling the data encoding means to transfer content and encoding information to encode content and generate program configuration information as the program configuration information generating means does not operate normally; And The audio / video transport stream and the first program configuration information generated by the program configuration information generating means and the data transmission stream encoded by the data encoding means are multiplexed and then modulated and transmitted, or the audio / video transport stream and the data encoding means Transmission means for multiplexing and then modulating the second program configuration information generated by the MS and the encoded data transmission stream Digital data broadcasting transmission system having a simple duplication function of the program configuration information including a. The method of claim 1, The first program configuration information, Contains Program and System Information Protocol (PSIP) information, Program Specific Information (PSI) information, and Application Information Table (AIT) information. The second program configuration information, A digital data broadcasting transmission system having a simple redundancy function of program configuration information comprising PSI information and AIT information. In the simple redundancy control method of the program configuration information in the digital data broadcasting transmission system, Confirming an operation state of the program configuration information generating means in response to receiving the knitting information and the encoding information; As a result of the checking, as the program configuration information generating means operates normally, the program configuration information generating means generates the first program configuration information using the knitting information, and the data encoding means encodes the content using the encoding information. Multiplexing with the audio / video transport stream and modulating and transmitting the same; And As a result of the checking, as the program configuration information generating unit does not operate normally, the data encoding unit encodes the content using the encoding information, and generates the second program configuration information using the knitting information. Multiplexing and modulating the video transport stream Simple redundancy control method of the program configuration information in a digital data broadcasting transmission system comprising a. The method of claim 3, wherein The first program configuration information, Contains Program and System Information Protocol (PSIP) information, Program Specific Information (PSI) information, and Application Information Table (AIT) information. The second program configuration information, A simple redundancy control method of program configuration information in a digital data broadcasting transmission system comprising PSI information and AIT information.

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