KR101100779B1 - Information production component coupled system for transmitting hd digital headend and method thereof - Google Patents

Abstract

PURPOSE: An HD(High Definition) digital broadcasting signal transmission system including information manufacturing composition and method thereof are provided to offer various types of a function and a system by creating data information or video information. CONSTITUTION: An information manufacturing unit(310) creates addition information which includes a digital broadcasting signal. The information manufacturing unit mixes the additional information at the digital broadcasting signal. A compression and multiplexing unit(320) compresses and the mixed information. A transmission unit(330) transmits the processed digital broadcasting signal to one or more reception terminals.

Description

HD digital broadcasting signal transmission system and method thereof combined with information production composition {INFORMATION PRODUCTION COMPONENT COUPLED SYSTEM FOR TRANSMITTING HD DIGITAL HEADEND AND METHOD THEREOF}

Embodiments of the present invention is a combined broadcast transmission system for generating a separate video information or data information from the broadcast signal and transmitting the broadcast signal together with the broadcast signal in one device that combines the configuration for transmitting the broadcast signal and the configuration for producing additional information And to a method thereof.

Current digital broadcasting transmission system is a device of the structure that receives and transmits the data of the standardized data using a radio frequency (RF) network, an IP (internet protocol) network, a cable network, a satellite network, etc., and has already been popularized. However, in the face of the digital broadcasting conversion, all future data transmissions are based on digital transmissions, and accordingly, standard proposals for broadcasting transmissions are being finalized.

In general, digital broadcasting includes DMB broadcasting (CMA), which is a Korean mobile digital broadcasting system, ATSC broadcasting (8VSB), which is an American digital terrestrial broadcasting, DVB-T broadcasting (OFDM), which is a European digital terrestrial broadcasting, and digital cable broadcasting (QAM). There is this.

In order to transmit 8VSB, DVB-S, etc. according to the broadcast transmission standard, the transmitter transmits the compressed coded data through MPEG-2 encoding to an RF signal. On the other hand, for satellite broadcasting, a standard of QPSK (phase shift keying) method and a cable transmission for QAM (quadrature amplitude modulation) standard are transmitted.

In such digital broadcasting, a broadcasting station usually performs data broadcasting such as text broadcasting in addition to television broadcasting. For example, various information programs such as information linked to a television broadcast program and independent information not linked to a television broadcast program can be provided as data broadcast.

Korean Patent Publication No. 2003-0019893 (published on March 07, 2003) discloses a system for generating and transmitting separate data information together with a television broadcast program.

In general, in order to produce and transmit digital broadcasts, as shown in FIG. 1, production equipment 101 such as an integrated receiver decoder (IRD), a camera, a recorder, and an editor for producing a main program signal and data information, and a main A / V processing equipment 102 such as a matrix or mixer for mixing program signals and data information, and compression multiplexing equipment 103 such as an HD encoder for encoding a broadcast program mixed with data information. And a modulator (for an RF network) or a stream server (for an IP network) to transmit a broadcast program that has undergone compression multiplexing to a user's receiving terminal (eg, a TV terminal) 105. Dispensing equipment 104 has to be built.

In other words, the existing system is composed of a separate system, a device for producing a main program signal, a device for generating data information and combining the main program signal, and a device for transmitting a program signal combined with the data information. Due to this system structure, the transmitting side equipment is a structure that merely plays a role of receiving a signal of standardized data already produced by the broadcasting producer and transmitting it to a receiver, thus providing a broadcasting service other than that provided by the broadcasting producer. There is a limit that is impossible. In other words, the operator of the transmitting side must have the A / V processing equipment 102, the compression multiplexing equipment 103, and the transmitting equipment 104 to transmit the desired type of broadcast.

In the present specification, in the transmission of digital broadcasting while maintaining the transmission scheme according to the standard of digital broadcasting, in addition to the main program signal, separate video information or data according to a user's request can be generated and transmitted at once from one device. Suggest a system.

Provided is a combined broadcast transmission system and method capable of simultaneously generating and transmitting separate video information or data information through a single device combining a configuration for transmitting a broadcast signal and a configuration for producing additional information.

An information production unit for generating additional information to be added to the digital broadcast signal and mixing the additional information with the digital broadcast signal; A compression multiplexer which compresses and multiplexes the digital broadcast signal mixed with additional information; And a transmitter for transmitting a compressed multiplexed digital broadcast signal to at least one receiving terminal. In this case, the information production unit, the compression multiplexer, and the transmitter may be configured as one device.

According to another aspect, the information production unit includes a broadcast signal input module for receiving a digital broadcast signal; A configuration for generating additional information through the internal memory, comprising at least one of a character generator, a logo generator, a graphics generator, a digital video effect, or a still store. An internal data generation module; And an external data input module configured to receive additional information from an external device.

According to another aspect, the information production unit may further include a control module for controlling scheduling for updating the additional information or controlling channel switching for transmitting the additional information separately from the digital broadcast signal according to the emergency signal or the user's request. can do.

According to another aspect, the internal data generation module may update the additional information by using external data input through a network or general purpose input / output (GPIO).

According to another aspect, the information production unit may include a mixer module for mixing the main video screen according to the digital broadcast signal and at least one additional video screen according to the additional information through an alpha blending technique.

According to another aspect, the transmitter may transmit the digital broadcast signal and the additional information to the receiving terminal through at least one of radio frequency (RF) transmission or internet protocol (IP) transmission.

A broadcast transmission method for transmitting a digital broadcast signal in a broadcast transmission system combined with an information production configuration includes: an information production step of generating additional information to be added to a digital broadcast signal in a broadcast transmission system and mixing the additional information into a digital broadcast signal; A broadcast multiplexing system, comprising: a compression multiplexing step of compressing and multiplexing a digital broadcast signal mixed with additional information; And in the broadcast transmission system, transmitting a compressed multiplexed digital broadcast signal to at least one receiving terminal. In this case, the information production step, the compression multiplexing step, and the transmitting step may be controlled by the central processing unit of the broadcasting transmitting system composed of one device.

A system capable of generating and transmitting separate video information or data information at a time may be implemented in a single device in which a configuration for transmitting a broadcast signal and a configuration for producing additional information are combined. Therefore, it is possible to decorate various types of functions and systems through the combination of information production composition, greatly simplify the system structure, and the efficient operation allows general users, not professional broadcasters, to transmit various types of broadcasting.

1 is a view for explaining the configuration of a system for producing and transmitting general digital broadcasting.
2 is a diagram for describing a broadcasting transmission system in which an information production configuration is combined according to an embodiment of the present invention.
3 is a block diagram illustrating an internal configuration of a broadcast transmission system in which an information production configuration is combined according to an embodiment of the present invention.
4 is a block diagram showing specific components of an information producing unit according to an embodiment of the present invention.
5 and 6 illustrate examples of broadcast screens transmitted by a broadcast transmission system in which an information production configuration is combined according to an embodiment of the present invention.
7 is a flowchart illustrating a broadcast transmission method in a broadcast transmission system in which an information production configuration is combined according to an embodiment of the present invention.

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

The present embodiments can be applied to a system of a transmitting side for transmitting an HD broadcast signal (headend) to a receiving terminal of a service target.

2 is a view for explaining a broadcast transmission system according to an embodiment of the present invention. FIG. 2 illustrates a broadcast transmission system 200 in which an information production configuration is combined so that separate additional information can be produced and transmitted together with a main image according to a digital broadcast signal.

As shown in FIG. 2, the broadcast transmission system 200 according to an embodiment includes the A / V processing equipment 102, the compression multiplexing equipment 103, and the transmission equipment 104 described in FIG. 1. Combined form. In addition, the broadcast transmission system 200 of the present invention is configured in the form of combining the information production configuration that can directly produce additional information or receive input from the outside.

The broadcast transmission system 200 according to an embodiment receives a digital broadcast signal produced by a broadcast producer through a production equipment 201 such as an integrated receiver decoder (IRD), a camera, a recorder, an editor, and the like, to a corresponding digital broadcast signal. After the additional information to be added is mixed, the digital broadcast signal including the additional information may be transmitted to the receiving terminal 202.

In the present specification, the additional information refers to information linked to the digital broadcast signal or independent information not linked to the digital broadcast signal, and may include at least one of video information, audio information, or data information. For example, the additional information may be displayed on the receiving terminal 202 such as a text such as a logo or a notice text, caption, graphic image, weather information, sports information, stock information, exchange rate information, breaking news, standard time, advertisement, or camera screen. The information type may correspond to this.

Referring to FIG. 3, an internal configuration of a broadcast transmission system combined with an information production configuration will be described in detail.

As shown in FIG. 3, the broadcast transmission system 300 according to an embodiment may include an information producer 310, a compression multiplexer 320, and a transmitter 330.

In this embodiment, the information producing unit 310, compression multiplexing unit 320, and the transmitting unit 330 is configured as a single device. In other words, the information producing unit 310, the compression multiplexing unit 320, and the transmitting unit 330 are not configured as individual devices, but are configured as one device so that all procedures of each component are centrally processed by the corresponding device. Can be controlled by the device.

The information producer 310 mixes additional information to be added to the digital broadcast signal into the digital broadcast signal. Basically, the information producer 310 may serve as a mixer for mixing the main video according to the digital broadcast signal and the at least one additional video according to the additional information. In particular, the information production unit 310 may generate an additional information by itself through an internal memory or may perform an information production role that receives a separate external input and utilizes the additional information. The configuration and function of the information production unit 310 will be described in detail below with reference to FIG. 4.

The compression multiplexer 320 performs compression multiplexing on the digital broadcast signal mixed with additional information. For example, the compression multiplexer 320 refers to a digital compression multiplexing configuration based on MPEG-2 and H.264. In other words, the compression multiplexer 320 may simultaneously generate H.264 compression multiplexing through a transcoder after compression multiplexing based on MPEG-2 on a digital broadcast signal mixed with additional information. In addition, the compression multiplexer 320 may perform compression multiplexing using MPEG-1, AC3, AAC, etc., which are multi-channel audio formats, in the case of an audio signal included in a digital broadcast signal.

The transmitter 330 plays a role of transmitting the compressed multiplexed digital broadcast signal to the at least one receiving terminal by mixing additional information. The transmitter 330 may transmit a digital broadcast signal and additional information to a receiving terminal through at least one of a radio frequency (RF) network transmission or an internet protocol (IP) network transmission. For example, when the broadcasting network for transmitting the digital broadcasting signal is an RF network, the transmitter 330 may be configured with a modulator such as an 8-level vestigial sideband (8VSB) modulator or a digital video broadcasting over satellite (DVB-S) modulator. have. As another example, the transmitter 330 may be configured as an IP transmitter such as a stream server when the broadcast network for transmitting the digital broadcast signal is an IP network. When the transmitter 330 includes both a modulator and an IP transmitter, the transmitter 330 may operate in a hybrid form in which RF transmission and IP transmission are simultaneously performed. According to the above configuration, since the transmitting unit 330 is capable of RF transmission and IP transmission at the same time, it is easy to construct a broadcasting system by user selection. Can be received on the screen.

4 is a block diagram showing specific components of an information producing unit according to an embodiment of the present invention. As shown in FIG. 4, the information production unit 400 includes a broadcast signal input module 410, an internal data generation module 420, an external data input module 430, a mixer module 440, and a control module 450. Can be configured.

The broadcast signal input module 410 receives a digital broadcast signal prepared in advance. In other words, the broadcast signal input module 410 may receive a main image according to a digital broadcast signal as a terrestrial wave or a cable signal, or may receive a self-produced image through production equipment such as an IRD, a camera, a recorder, or an editor. .

The internal data generation module 420 automatically generates additional information to be added to the main image through the internal memory. For example, the internal data generation module 420 may be configured as one of a character generator, a logo generator, a graphic generator, a DVE, or a still store, or one or more of these components may be combined. In this case, the character generator is a system capable of inserting letters or numbers, not pictures, and the logo generator is a device having a video clip function in the form of a picture, and the graphic generator is a device for generating image graphics. DVE is a device that adds various effects such as screen reduction, magnification, rotation, division, mosaic, solution, etc. to the actual screen of the video signal, and still store is a digital editing device that stores single images. Is the same as In other words, the internal data generation module 420 may produce not only a separate video or audio that the user wants to display on the main video screen, but also various data such as characters, figures, equations, scrolls, and popups. As such, when using the internal data generation module 420 capable of generating additional information by itself, the additional information may be simply inserted into the digital broadcast signal without any external equipment.

The external data input module 430 receives a role of receiving additional information from an external device. For example, the external data input module 430 may be a separate screen such as an external PC screen, a server (such as an advertisement server or an emergency broadcast server) screen, or a camera screen based on a digital visual interface (DVI) or a high definition multimedia interface (HDMI). External input may be input as additional information. When receiving an external input through the external data input module 430, an external separate device should be added, but more various and complicated data can be inserted as additional information than the internal data generated by the internal data generation module 420. Can be.

The mixer module 440 mixes a main video screen according to a digital broadcast signal and at least one additional video screen according to additional information. For example, the mixer module 440 may mix the main video screen and the additional video screen by using an alpha blending technique. The alpha blending technique, which is used to mix two or more screens, can create a natural and luxurious composite screen by adjusting the translucency level of the screen according to the key value.

The control module 450 is responsible for controlling overall operation switching and enable / disable setting by the automatic scheduler of the internal data generation module 420 and / or the external data input module 430. To perform. In other words, the control module 450 controls scheduling for updating the additional information, and may automatically update the additional information for the additional video screen by its own time scheduler. For example, the control module 450 may receive external data through a network or GPIO at a predetermined time point by a scheduler and transmit the external data to the internal data generation module 420 and / or the external data input module 430. In this case, the internal data generation module 420 may update the additional information by using external data input through a network or GPIO. In addition, the control module 450 may transmit an external input input through the external data input module 430 automatically according to a time schedule separately from the digital broadcast signal during broadcast transmission, such as a separate channel (eg, an advertisement) of the corresponding external input. Can be automatically switched to broadcasting). The control module 450 forcibly controls channel switching for transmitting additional information separately from the digital broadcast signal according to the emergency signal or the user's request. In this case, the control module 450 may serve as an external trigger such as an emergency switcher. For example, in the event of a disaster, the control module 450 may control the internal data generation module 420 and / or the external data input module 430 to add an indication indicating a disaster situation generated through the internal data generation module 420. The information is displayed on the TV of the service recipient (for example, scrolling the bottom ticker through text generation) to induce viewers to change to the disaster broadcasting channel or to restrict the display of the main video screen and to simultaneously An external image related to a disaster situation may be input through the data input module 430 to be forcibly switched to a disaster broadcasting channel.

According to the above configuration, the broadcasting transmission system transmits in the production of separate video or audio or various data according to the user's request in addition to the main image while maintaining the existing transmission method for the digital broadcasting signal due to the combination of the information production configuration. Up to one instrument at a time.

5 and 6 illustrate examples of broadcast screens transmitted by a broadcast transmission system in which an information production configuration is combined according to an embodiment of the present invention.

As illustrated in FIG. 5, in the broadcast transmitting system 500, weather information, sports information, and the like that can be input from the data broadcasting server 502 are added to original data 501 of a digital broadcast signal input from an external production equipment. After synthesizing the information 502, the digital broadcast signal 503 synthesized with the additional information may be transmitted to a receiving terminal 504 such as a public office, a hotel, a hospital, or an in-house broadcasting through a broadcasting network.

When a user inserts a logo into the digital broadcast signal using the logo insertion function of the internal data generation module, the broadcast transmission system synthesizes and transmits the logo created by the user to the original data of the digital broadcast signal, as shown in FIG. 6. As described above, an image in which the logo 601 is inserted may be displayed on the screen of the receiving terminal.

Although the broadcasting transmission system includes the information production configuration despite being the system of the broadcasting side, it is possible to construct a simple and economical integrated system, and through such a system structure, the general broadcasting, advertisement broadcasting, and educational broadcasting using only one equipment is possible. Various types of broadcasting services are available, such as security broadcasting, termination broadcasting, and in-house broadcasting. Therefore, the broadcasting system including the information production configuration includes local broadcasting facilities, small private broadcasting facilities, religious broadcasting facilities, school or institute broadcasting facilities, in-house broadcasting facilities, government broadcasting facilities, factory disaster prevention facilities, security control facilities, and remote monitoring facilities. And the like.

7 is a flowchart illustrating a broadcast transmission method in a broadcast transmission system in which an information production configuration is combined according to an embodiment of the present invention. In the broadcast transmission method according to the present embodiment, each step may be performed by the broadcast transmission system 300 described with reference to FIG. 3. In this case, the broadcast transmission system 300 is a compression multiplexing configuration and transmission configuration for the digital broadcast signal is a system that combines the information production configuration that can produce additional information separate from the digital broadcast signal into a single device, broadcast transmission method All steps included in the control may be controlled by the central processing unit of the broadcast transmission system 300 composed of one device.

In operation 710, the broadcast transmission system 300 may generate additional information to be added to the digital broadcast signal and mix the additional information into the digital broadcast signal. For example, the broadcast transmission system 300 may generate additional information through at least one of a text generator, a logo generator, a graphic generator, a DVE, or a still store according to a user's request. In this case, the broadcast transmission system 300 may update additional information using external data input through a network or GPIO. As another example, the broadcast transmission system 300 receives additional information from an external device, and may receive a separate external input such as an external PC screen, a server screen, a camera screen, and the like as additional information. Accordingly, the broadcast transmission system 300 may generate additional information by using the internal memory or by using a separate external input as additional information. Accordingly, the broadcast transmission system 300 may mix the main video screen according to the digital broadcast signal and the at least one additional video screen according to the additional information through an alpha blending technique. In addition, the broadcast transmission system 300 may support a function of forcibly switching a channel for transmitting additional information separately from the digital broadcast signal according to an emergency signal or a user's request.

In operation 720, the broadcast transmission system 300 performs compression multiplexing on the digital broadcast signal mixed with additional information. In this case, the broadcast transmission system 300 may simultaneously generate H.264 compression multiplexing through a transcoder after compression multiplexing on the basis of MPEG-2 for a digital broadcast signal mixed with additional information, and in the case of an audio signal, MPEG- Compression multiplexing can be performed using 1, AC3, AAC, and the like.

In operation 730, the broadcast transmission system 300 may transmit the compressed multiplexed digital broadcast signal by mixing additional information to at least one receiving terminal. The broadcast transmission system 300 transmits a digital broadcast signal and additional information to a receiving terminal of a service subject through at least one of RF transmission and IP transmission. When both the RF transmission and the IP transmission are supported, the broadcast transmission system 300 It can operate in a hybrid form that can send IP simultaneously.

As described above, according to embodiments of the present invention, due to the combination of the information production configuration, from the production to the transmission of various types of additional information according to the user's request in addition to the main video while maintaining the existing transmission method for the digital broadcast signal Can be run on one machine at a time. Therefore, the system structure can be greatly simplified by combining A / V processing, compression multiplexing, and transmission equipment into a single device. Through this system structure, only a single device can be used for general broadcasting, commercial broadcasting, and educational broadcasting. Various types of broadcasting services are available, such as security broadcasting, termination broadcasting, and in-house broadcasting.

According to the embodiments of the present invention, various additional information may be inserted into the transmitted video using a video clip or a logo insertion function of the present invention. And features are easy to recognize. In addition, it can receive a variety of data such as text, caption broadcasting, stock information, exchange rate information, weather information, breaking news, etc. through external input and can be utilized as additional information that can be inserted into the transmission video, thereby enabling bidirectional transmission. Moreover, the emergency transmission function enables switching to forced channels such as disaster broadcasting, and can easily and quickly transmit breaking news and data information.

Since the embodiments of the present invention can be used as the system of the transmitting side, there is no fear of the issue of A / S (after service) as it is possible to use the equipment of the receiving side. Various screens such as video can be implemented simply by configuring the transmitter.

Methods according to an embodiment of the present invention may be implemented in the form of program instructions that can be executed by various computer means and recorded in a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the media may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts. In addition, the above-described file system can be recorded in a computer-readable recording medium.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims below but also by the equivalents of the claims.

300: broadcast transmission system
310: information production department
320: compressed multiplexer
330: sending part
410: broadcast signal input module
420: internal data generation module
430: external data input module
440: mixer module
450: control module

Claims (10)

In the system for transmitting a digital broadcast signal,
An information producer which generates additional information to be added to the digital broadcast signal and mixes the additional information with the digital broadcast signal;
A compression multiplexer which compresses and multiplexes the digital broadcast signal mixed with the additional information; And
A transmitter for transmitting the compressed multiplexed digital broadcast signal to at least one receiving terminal
Including;
The information production unit,
A broadcast signal input module configured to receive the digital broadcast signal;
The additional information may be generated through an internal memory, and may include at least one of a character generator, a logo generator, a graphics generator, a digital video effect, or a still store. A configured internal data generation module;
An external data input module to receive the additional information from an external device; And
A control module for controlling scheduling for updating the additional information or controlling channel switching for transmitting the additional information separately from the digital broadcast signal according to an emergency signal or a user's request
Including,
The information production unit, the compression multiplexing unit and the transmitting unit is composed of one equipment
Broadcast transmission system combined with the information production configuration characterized in that. delete delete The method of claim 1,
The internal data generation module,
Updating the additional information using external data input via a network or general purpose input / output (GPIO)
Broadcast transmission system combined with the information production configuration characterized in that. The method of claim 1,
The information production unit,
And a mixer module for mixing the main video screen according to the digital broadcast signal and the at least one additional video screen according to the additional information through an alpha blending technique.
Broadcast transmission system combined with the information production configuration characterized in that. The method of claim 1,
The sending unit,
Transmitting the digital broadcast signal and the additional information to the receiving terminal through at least one of RF (radio frequency) transmission and IP (Internet protocol) transmission.
Broadcast transmission system combined with the information production configuration characterized in that. In the broadcast transmission method for transmitting a digital broadcast signal in a broadcast transmission system combined with an information production configuration,
An information production step of generating additional information to be added to the digital broadcast signal in the broadcast transmission system and mixing the additional information with the digital broadcast signal;
A compression multiplexing step of compressing and multiplexing the digital broadcast signal in which the additional information is mixed in the broadcast transmission system; And
A transmission step of transmitting the compressed multiplexed digital broadcast signal to at least one receiving terminal in the broadcast transmission system;
Including,
The information production step,
Receiving the digital broadcast signal;
Generating the additional information via at least one of a text generator, a logo generator, a graphics generator, a DVE, or a still store;
Receiving the additional information from an external device; And
Forcing a channel for transmitting the additional information separately from the digital broadcasting signal according to an emergency signal or a user's request
Including,
Wherein said information producing step, said compression multiplexing step and said sending step are controlled by a central processing unit of said broadcast transmitting system composed of one equipment;
Broadcast transmission method characterized in that. delete delete The method of claim 7, wherein
The sending step,
Transmitting the digital broadcast signal and the additional information to the receiving terminal through at least one of RF transmission and IP transmission;
Broadcast transmission method characterized in that.

Images