KR101892748B1 - A method for transmitting contents, an apparatus using it and contents transmitting system - Google Patents

Abstract

According to another aspect of the present invention, there is provided a content transmission method including: grouping a plurality of reception devices into one or more groups; Generating identification codes corresponding to the groups; Inserting an identifier into a content object to be transmitted to each of the groups so as to correspond to each of the identification codes; Generating an object carousel including the content object, and transmitting the object carousel to the plurality of receiving apparatuses. According to the embodiment of the present invention, the receiving apparatuses can be grouped and the contents corresponding to each group can be transmitted to the corresponding group.

Description

[0001] The present invention relates to a content transmission method, a content transmission method,

The present invention relates to a content transmission method, an apparatus thereof, and a content transmission system, and more particularly, to a content transmission method, an apparatus thereof, and a content transmission system capable of transmitting different contents to a grouped reception apparatus. More particularly, the present invention relates to a method of grouping receiving apparatuses and transmitting content objects by assigning identification codes thereto.

An image display device for displaying contents is a device having a function of displaying an image that a user can view. The user can not only view the video through the video display device but also display the content received from the server. The video display device displays the content transmitted from the server on the display.

FIG. 1 is a diagram for explaining a content transmission system using a general server 11.

Referring to FIG. 1, a content transmission system using a general server 11 includes a content receiving apparatus 13 such as a content transmitting server 11 and a video display apparatus. In the case of the general server 11, since the same signal is transmitted to the content receiving apparatus 13 through the same RF network 12, the same content is displayed in each receiving apparatus 13.

For example, the server 13 may be a server for transmitting advertisement contents, or transmitting content such as an hotel management application in a hotel, and the receiving device 13 may receive and execute such contents, And may be an image display device for displaying an image.

An object of the present invention is to provide a method of grouping receiving apparatuses and transmitting contents corresponding to each group.

The present invention also provides a method for transmitting corresponding contents to each group using an RF channel.

According to another aspect of the present invention, there is provided a content transmission method including: grouping a plurality of reception devices into one or more groups; Generating identification codes corresponding to the groups; Inserting an identifier into a content object to be transmitted to each of the groups so as to correspond to each of the identification codes; Generating an object carousel including the content object, and transmitting the object carousel to the plurality of receiving apparatuses.

According to another aspect of the present invention, there is provided a content transmission system for grouping a plurality of receiving apparatuses into one or more groups, generating identification codes corresponding to the groups, Inserting an identifier into a content object to be transmitted to each of the groups so as to correspond to the content object, generating an object carousel including the content object, and transmitting the object carousel; And a control unit for receiving the correspondence information of the object carousel, the content object identifier and the identification code from the server, and extracting a content object corresponding to the group belonging to the object carousel from the object carousel Receiving apparatus.

According to another aspect of the present invention, there is provided a content transmission server including a grouping module for grouping a plurality of receiving devices into one or more groups and generating identification codes corresponding to the groups; An object generation module for generating a content object for transmission to each of the groups and inserting an identifier corresponding to each of the identification codes; An object carousel generation module for generating an object carousel including the content object; And a transmission module for transmitting the object carousel to the plurality of reception devices.

According to the embodiment of the present invention, the receiving apparatuses can be grouped and the contents corresponding to each group can be transmitted to the corresponding group.

Particularly, contents can be transmitted through RF, and the receiving apparatus can extract and execute contents corresponding to the group.

On the other hand, the group management can be efficiently performed by grouping the receiving apparatuses, setting an identification code for the group, and generating and transmitting the corresponding relationship information.

In addition, various contents can be transmitted differently according to each group, for example, according to a specific layer, so that the content utilization can be increased.

1 is a diagram schematically showing an example of a general contents transmission system.
FIG. 2 is a diagram schematically illustrating a content transmission system according to an embodiment of the present invention. Referring to FIG.
3 is a block diagram of a server of a content transmission system according to an embodiment of the present invention.
4 is a block diagram of a receiving apparatus of a content transmission system according to an embodiment of the present invention.
5 is a flowchart illustrating a content transmission method according to an embodiment of the present invention.
6 is a diagram for explaining a method of setting an identification code of a group in a content transmission method according to an embodiment of the present invention.
7 is a view for explaining a content transmission method according to another embodiment of the present invention.

The following merely illustrates the principles of the invention. Thus, those skilled in the art will be able to devise various apparatuses which, although not explicitly described or shown herein, embody the principles of the invention and are included in the concept and scope of the invention. Furthermore, all of the conditional terms and embodiments listed herein are, in principle, intended only for the purpose of enabling understanding of the concepts of the present invention, and are not intended to be limiting in any way to the specifically listed embodiments and conditions .

It is also to be understood that the detailed description, as well as the principles, aspects and embodiments of the invention, as well as specific embodiments thereof, are intended to cover structural and functional equivalents thereof. It is also to be understood that such equivalents include all elements contemplated to perform the same function irrespective of the currently known equivalents as well as the equivalents to be developed in the future, i.e., the structure.

Thus, for example, it should be understood that the block diagrams herein represent conceptual views of exemplary circuits embodying the principles of the invention. Similarly, all flowcharts, state transition diagrams, pseudo code, and the like are representative of various processes that may be substantially represented on a computer-readable medium and executed by a computer or processor, whether or not the computer or processor is explicitly shown .

The functions of the various elements shown in the figures, including the functional blocks depicted in the processor or similar concept, may be provided by use of dedicated hardware as well as hardware capable of executing software in connection with appropriate software. When provided by a processor, the functions may be provided by a single dedicated processor, a single shared processor, or a plurality of individual processors, some of which may be shared.

Also, the explicit use of terms such as processor, control, or similar concepts should not be interpreted exclusively as hardware capable of running software, and may be used without limitation as a digital signal processor (DSP) (ROM), random access memory (RAM), and non-volatile memory. Other hardware may also be included.

In the claims hereof, the elements represented as means for performing the functions described in the detailed description include all types of software including, for example, a combination of circuit elements performing the function or firmware / microcode etc. , And is coupled with appropriate circuitry to execute the software to perform the function. It is to be understood that the invention defined by the appended claims is not to be construed as encompassing any means capable of providing such functionality, as the functions provided by the various listed means are combined and combined with the manner in which the claims require .

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, in which: There will be. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

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

Meanwhile, the video display device, which is a receiving device described in the present specification, is an intelligent video display device to which, for example, a computer supporting function is added to a broadcast receiving function, , A touch screen or a space remote controller. Also, it can be connected to the Internet and a computer by the support of a wired or wireless Internet function, and can perform functions such as e-mail, web browsing, banking or game. A standardized general-purpose OS can be used for these various functions.

Therefore, the video display device described in the present invention can freely add or delete various applications, for example, on a general-purpose OS kernel, so that various user-friendly functions can be performed. More specifically, the video display device may be, for example, a network TV, an HBBTV, a smart TV, or the like, and may be applied to a smartphone according to circumstances.

FIG. 2 is a diagram schematically illustrating a content transmission system according to an embodiment of the present invention. Referring to FIG.

As shown in FIG. 2, the content transmission system according to the embodiment of the present invention may include a content transmission server 200 and a plurality of reception apparatuses 100.

The content providing server 200 provides various contents. In the content providing server 200, a store management server, a hotel management server, an advertisement providing server, a hospital management server, and the like may be exemplified according to the place and purpose in which each server is installed. In addition, the content providing server 200 may provide various applications and update information in addition to the image content.

Then, the content providing server 200 groups the receiving apparatuses 100 into one or more groups according to the setting of the user, and generates an identification code corresponding to each group.

The content providing server 200 inserts an identifier into the content to be transmitted to the corresponding group according to the identification code and transmits corresponding relationship information including relation information between each receiving apparatus 100 and the group to the receiving apparatus 100 together with the content. Lt; / RTI >

The transmission method of the content providing server 200 may be an RF channel transmission method through the RF network between the content providing server 200 and the receiving apparatus 100. The RF channel may be transmitted via cable or wireless.

On the other hand, the plurality of receiving apparatuses 100 receive the content, and the receiving apparatus executes the content of the corresponding group or displays the executed image.

An image display device may be exemplified as the receiving device 100. The receiving device 100 receives the corresponding relationship information to determine the group to which the receiving device 100 belongs, and stores the identification code and the content identifier corresponding to the group . Then, the receiving apparatus 100 can find and execute or display the content of the group among the received contents based on the extracted identifier.

3 is a diagram illustrating a configuration of a server 200 of a content transmission system according to an embodiment of the present invention.

3, a server 200 of a content transmission system according to an exemplary embodiment of the present invention includes a grouping module 210 for grouping receiving apparatuses 100, a grouping module 210 for grouping receiving apparatuses 100, An object generation module 220 for generating a content object, a carousel generation module 130 for integrating the generated objects into an object carousel, and an RF transmission module for RF transmission of the generated carousel .

The grouping module 210 groups the receiving apparatuses 100 on the basis of information corresponding to each receiving apparatus 100, for example, a serial number, and assigns identification codes thereto.

The grouping module 210 may change or modify the configuration of the group according to user settings. For example, the reception devices installed on the first floor of the hotel building may be classified into the first and second reception devices, and the reception devices installed on the second floor may be grouped and assigned different identification codes to the two groups.

Meanwhile, the object generation module 220 generates a content object for providing the content. The content object may include content that is executed or displayed on the receiving device 100.

The object generation module 220 inserts an identifier into the content according to the identification code corresponding to each group generated by the grouping module 210. [ Therefore, the receiving apparatus 100 can extract, execute, or display only the content of the group to which the receiving apparatus 100 belongs based on the content identifier.

Meanwhile, the carousel generation module 230 may generate the content object carousel by integrating the generated content objects, and may transmit the content object carousel to the RF transmission module 240. Details of the content object carousel will be described later.

The RF transmission module 240 can RF modulate the received content object carousel, transmit the processed content object carousel, and transmit it to the reception device 100 through the RF network.

FIG. 4 is a diagram illustrating a configuration of a reception apparatus 100 of a content transmission system according to an embodiment of the present invention.

4, a receiving apparatus 100 according to an exemplary embodiment of the present invention includes a broadcast receiving unit 105, an external device interface unit 135, a storage unit 140, a user input interface unit 150, A display unit 180, an audio output unit 185, a power supply unit 190, and a photographing unit (not shown). The broadcast receiving unit 105 may include a tuner 110, a demodulator 120, and a network interface unit 130. Of course, the tuner 110 and the demodulator 120 may be provided, but the network interface 130 may not be included. Alternatively, the tuner 110 and the demodulator 120 may be included, It is also possible to design the demodulation unit 120 not to include it.

The tuner 110 selects an RF broadcast signal corresponding to a channel selected by the user or all previously stored channels among RF (Radio Frequency) broadcast signals received through the antenna. Also, the selected RF broadcast signal is converted into an intermediate frequency signal, a baseband image, or a voice signal.

For example, if the selected RF broadcast signal is a digital broadcast signal, it is converted into a digital IF signal (DIF). If the selected RF broadcast signal is an analog broadcast signal, it is converted into an analog baseband image or voice signal (CVBS / SIF). That is, the tuner 110 can process both a digital broadcast signal and an analog broadcast signal. The analog baseband video or audio signal (CVBS / SIF) output from the tuner 110 can be directly input to the controller 170.

Also, the tuner 110 can receive RF carrier signals of a single carrier according to an Advanced Television System Committee (ATSC) scheme or RF carriers of a plurality of carriers according to a DVB (Digital Video Broadcasting) scheme.

Meanwhile, the tuner 110 sequentially selects RF broadcast signals of all the broadcast channels stored through the channel memory function among the RF broadcast signals received through the antenna, and converts the RF broadcast signals into an intermediate frequency signal, a baseband image, or a voice signal have.

The demodulator 120 receives the digital IF signal DIF converted by the tuner 110 and performs a demodulation operation.

For example, when the digital IF signal output from the tuner 110 is the ATSC scheme, the demodulator 120 performs 8-VSB (8-Vestigal Side Band) demodulation, for example. Also, the demodulation unit 120 may perform channel decoding. To this end, the demodulator 120 includes a trellis decoder, a de-interleaver, and a reed solomon decoder to perform trellis decoding, deinterleaving, Solomon decoding can be performed.

For example, when the digital IF signal output from the tuner 110 is a DVB scheme, the demodulator 120 performs CODDMA (Coded Orthogonal Frequency Division Modulation) demodulation, for example. Also, the demodulation unit 120 may perform channel decoding. For this, the demodulator 120 may include a convolution decoder, a deinterleaver, and a reed-solomon decoder to perform convolutional decoding, deinterleaving, and reed solomon decoding.

The demodulation unit 120 may perform demodulation and channel decoding, and then output a stream signal TS. At this time, the stream signal may be a signal in which a video signal, a voice signal, or a data signal is multiplexed. For example, the stream signal may be an MPEG-2 TS (Transport Stream) multiplexed with an MPEG-2 standard video signal, a Dolby AC-3 standard audio signal, or the like. Specifically, the MPEG-2 TS may include a header of 4 bytes and a payload of 184 bytes.

Meanwhile, the demodulating unit 120 may be separately provided according to the ATSC scheme and the DVB scheme. That is, it can be provided as an ATSC demodulation unit and a DVB demodulation unit.

The stream signal output from the demodulation unit 120 may be input to the controller 170. The control unit 170 performs demultiplexing, video / audio signal processing, and the like, and then outputs the video to the display unit 180 and audio to the audio output unit 185.

The external device interface unit 135 can connect the external device and the receiving device 100. [ To this end, the external device interface unit 135 may include an A / V input / output unit (not shown) or a wireless communication unit (not shown).

The external device interface unit 135 can be connected to an external device such as a DVD (Digital Versatile Disk), a Blu ray, a game device, a camera, a camcorder, a computer (notebook) The external device interface unit 135 transmits external video, audio, or data signals to the controller 170 of the receiving apparatus 100 through the connected external apparatus. Also, the control unit 170 can output the processed video, audio, or data signal to the connected external device. To this end, the external device interface unit 135 may include an A / V input / output unit (not shown) or a wireless communication unit (not shown).

(A / V) input / output unit includes a USB terminal, a CVBS (Composite Video Banking Sync) terminal, a component terminal, an S-video terminal (analog), a DVI Digital Visual Interface) terminal, an HDMI (High Definition Multimedia Interface) terminal, an RGB terminal, a D-SUB terminal, and the like.

The wireless communication unit can perform short-range wireless communication with other electronic devices. The receiving apparatus 100 may be implemented by, for example, Bluetooth, Radio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), ZigBee, Digital Living Network Alliance (DLNA) And the like.

Also, the external device interface unit 135 may be connected to the various set-top boxes via at least one of the various terminals described above to perform input / output operations with the set-top box.

Meanwhile, the external device interface unit 135 may receive the application or application list in the adjacent external device, and may transmit the received application or application list to the control unit 170 or the storage unit 140.

The network interface unit 130 provides an interface for connecting the receiving apparatus 100 to a wired / wireless network including the Internet network. The network interface unit 130 may include an Ethernet terminal or the like for connection to a wired network and may be a WLAN (Wireless LAN) (Wi- Fi wireless broadband (Wibro), World Interoperability for Microwave Access (Wimax), and HSDPA (High Speed Downlink Packet Access) communication standards.

The network interface unit 130 can transmit or receive data with other users or other electronic devices via a network connected thereto or another network linked to the connected network. Particularly, it is possible to transmit a part of content data stored in the receiving apparatus 100 to another user registered in the receiving apparatus 100 or a selected one of the other electronic apparatuses or selected electronic apparatuses.

On the other hand, the network interface unit 130 can access a predetermined web page through the connected network or another network linked to the connected network. That is, it is possible to access a predetermined web page through a network and transmit or receive data with the server. In addition, content or data provided by a content provider or a network operator can be received. That is, it can receive contents such as a movie, an advertisement, a game, a VOD, a broadcast signal, and related information provided from a content provider or a network provider through a network. In addition, the update information and the update file of the firmware provided by the network operator can be received. It may also transmit data to the Internet or a content provider or network operator.

In addition, the network interface unit 130 can select and receive a desired application among applications open to the public via a network.

According to the embodiment, when the game application is executed in the video display device, the network interface 130 may transmit or receive predetermined data with the user terminal connected to the video display device. In addition, a predetermined data can be transmitted or received from a server storing game scores

The storage unit 140 may store a program for each signal processing and control in the control unit 170 or may store the processed video, audio, or data signals.

The storage unit 140 may also function to temporarily store video, audio, or data signals input from the external device interface unit 135 or the network interface unit 130. In addition, the storage unit 140 may store information on a predetermined broadcast channel through the channel memory function.

The storage unit 140 may store a list of applications or applications input from the external device interface unit 135 or the network interface unit 130. [

In addition, according to the embodiment, the storage unit 140 may store unique information and game play information of a user terminal used as a game controller in providing a game application in the video display device.

The storage unit 140 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD Memory, etc.), RAM, ROM (EEPROM, etc.), and the like. The receiving apparatus 100 may reproduce and provide a content file (a moving image file, a still image file, a music file, a document file, an application file, etc.) stored in the storage unit 140 to a user.

FIG. 6 shows an embodiment in which the storage unit 140 is provided separately from the control unit 170, but the scope of the present invention is not limited thereto. The storage unit 140 may be included in the controller 170.

The user input interface unit 150 transmits a signal input by the user to the control unit 170 or a signal from the control unit 170 to the user.

For example, the user input interface unit 150 may be configured to turn on / off the power, select the channel, and display the screen from the remote control device 200 according to various communication methods such as a radio frequency (RF) communication method and an infrared Or a control signal from the control section 170 to the remote control apparatus 200. The remote control apparatus 200 may be configured to receive the control signal from the control section 170,

Also, for example, the user input interface unit 150 can transmit a control signal input from a local key (not shown) such as a power key, a channel key, a volume key, and a set value to the controller 170.

For example, the user input interface unit 150 may transmit a control signal input from a sensing unit (not shown) that senses a user's gesture to the control unit 170, or may sense a signal from the control unit 170 (Not shown). Here, the sensing unit (not shown) may include a touch sensor, an audio sensor, a position sensor, an operation sensor, and the like.

The control unit 170 demultiplexes the input stream or processes the demultiplexed signals through the tuner 110 or the demodulation unit 120 or the external device interface unit 135 to generate a signal for video or audio output Can be generated and output.

The video signal processed by the controller 170 may be input to the display unit 180 and displayed as an image corresponding to the video signal. The video signal processed by the controller 170 may be input to the external output device through the external device interface 135. [

The audio signal processed by the control unit 170 may be output to the audio output unit 185 through audio. The voice signal processed by the control unit 170 may be input to the external output device through the external device interface unit 135.

Although not shown in FIG. 6, the control unit 170 may include a demultiplexing unit, an image processing unit, and the like. In addition, the control unit 170 can control the overall operation in the receiving apparatus 100. [ For example, the control unit 170 may control the tuner 110 to control the tuner 110 to select an RF broadcast corresponding to a channel selected by the user or a previously stored channel.

The control unit 170 may control the receiving apparatus 100 according to a user command or an internal program input through the user input interface unit 150. In particular, it is possible to access the server 200 through the network and download a necessary application or application list to the receiving apparatus 100.

For example, the controller 170 controls the tuner 110 to input a signal of a selected channel according to a predetermined channel selection command received through the user input interface unit 150. Then, video, audio, or data signals of the selected channel are processed. The control unit 170 allows the display unit 180 or the audio output unit 185 to output the video or audio signal processed by the user through the channel information or the like selected by the user.

For example, the control unit 170 may control the operation of the external device through the external device interface unit 135, for example, a camera or a camcorder, according to an external device video playback command received through the user input interface unit 150 So that the video signal or the audio signal of the audio signal output through the display unit 180 or the audio output unit 185 can be outputted.

Meanwhile, the control unit 170 may control the display unit 180 to display an image. For example, a broadcast image input through the tuner 110, an external input image input through the external device interface unit 135, an image input through the network interface unit, or an image stored in the storage unit 140 , And display on the display unit 180 can be controlled. At this time, the image displayed on the display unit 180 may be a still image or a moving image, and may be a 2D image or a 3D image.

Also, the control unit 170 can control to reproduce the content. The content at this time may be a content object extracted from an object carousel, and may include content stored in the receiving apparatus 100, received broadcast content, or external input content input from the outside. The content may be at least one of hotel information, hospital information, broadcast video, external input video, audio file, still image, connected web screen, and document file.

The display unit 180 converts an image signal, a data signal, an OSD signal processed by the control unit 170 or a video signal and a data signal received from the external device interface unit 135 into R, G, and B signals, respectively Thereby generating a driving signal.

The display unit 180 may be a PDP, an LCD, an OLED, a flexible display, a 3D display, or the like.

Meanwhile, the display unit 180 may be configured as a touch screen and used as an input device in addition to the output device.

The audio output unit 185 receives a signal processed by the control unit 170, for example, a stereo signal, a 3.1 channel signal, or a 5.1 channel signal, and outputs it as a voice. The voice output unit 185 may be implemented by various types of speakers.

Meanwhile, in order to detect the user's gesture, a sensing unit (not shown) having at least one of a touch sensor, a voice sensor, a position sensor, and an operation sensor may be further provided in the receiving apparatus 100 . A signal sensed by a sensing unit (not shown) may be transmitted to the controller 170 through the user input interface unit 150.

On the other hand, a photographing unit (not shown) for photographing a user may be further provided. The image information photographed by the photographing unit (not shown) may be input to the control unit 170.

The control unit 170 may sense the gesture of the user by combining the images photographed by the photographing unit (not shown) or the signals sensed by the sensing unit (not shown).

The power supply unit 190 supplies the corresponding power supply throughout the receiving apparatus 100.

Particularly, it is possible to supply power to a control unit 170 that can be implemented in the form of a system on chip (SOC), a display unit 180 for displaying an image, and an audio output unit 185 for audio output .

To this end, the power supply unit 190 may include a converter (not shown) for converting the AC power into DC power. Meanwhile, for example, when the display unit 180 is implemented as a liquid crystal panel having a plurality of backlight lamps, an inverter (not shown) that can perform a PWM operation for variable luminance or dimming driving is further provided It is possible.

The remote control device 155 transmits the user input to the user input interface unit 150. [ To this end, the remote control device 155 may use Bluetooth, RF (radio frequency) communication, infrared (IR) communication, UWB (Ultra Wideband), ZigBee, or the like.

Also, the remote control device 155 can receive the video, audio, or data signal output from the user input interface unit 150, display it on the remote control device 155, or output voice or vibration.

The receiving apparatus 100 described above can be applied to a digital broadcasting of ATSC system (8-VSB system), digital broadcasting of DVB-T system (COFDM system), digital broadcasting of ISDB-T system (BST-OFDM system) And may be a digital broadcast receiver capable of receiving at least one.

Meanwhile, a block diagram of the receiving apparatus 100 shown in FIG. 4 is a block diagram for an embodiment of the present invention. Each component of the block diagram can be integrated, added, or omitted according to the specifications of the receiving apparatus 100 actually implemented. That is, two or more constituent elements may be combined into one constituent element, or one constituent element may be constituted by two or more constituent elements, if necessary. In addition, the functions performed in each block are intended to illustrate the embodiments of the present invention, and the specific operations and apparatuses do not limit the scope of the present invention.

6, the receiving apparatus 100 does not include the tuner 110 and the demodulating unit 120 shown in FIG. 6 but includes a network interface unit 130 or an external apparatus interface unit 135, It is possible to receive and reproduce the image content.

On the other hand, the receiving apparatus 100 is an example of a video signal processing apparatus that performs signal processing of a video image or an input video image stored in the apparatus. Other examples of the video signal processing apparatus include a set-top box, a DVD player, a Blu-ray player, a game machine, a computer, etc., except for the display unit 180 and the audio output unit 185 shown in FIG. 6 .

5 is a flowchart illustrating a content transmission method according to an embodiment of the present invention.

5, first, the grouping module 210 of the server 200 generates one or more groups based on the serial information of each receiving device 100 (step S100), and generates an identification code corresponding to each group (Step S110).

The identification code may be an ID for each group, and may be generated using specific information used in a data transmission service for broadcasting. The specific information may utilize the transaction_id information on the object carousel transmission data used in the Digital Storage Media-Command and Control (DSM-CC) section for digital broadcasting data broadcasting.

The object carousel is defined in the DSM-CC standard specification of the ISO / IEC 13818-6 standard, and is reflected in various data broadcasting specifications to follow.

The DSM-CC (Digital Storage Media Command and Control) standard is a set of protocols that provide control functions and operations for managing MPEG-1 and MPEG-2 bit streams as a proposed standard for transmission of multimedia broadband services .

The Object Carousel is defined by Digital Storage Media-Command & Control (DSM-CC) and is used to send a structured group of objects from a server to a broadcast receiver using directory objects, file objects, and stream objects. . The actual directory and content are located on the server. The Object Carousel specification supports data broadcasting services that require periodic broadcasting of DSM-CC user-to-user objects over a broadcast network. The server repeatedly inserts the mentioned objects into an MPEG-2 transport stream using the Object Carousel protocol. The transmitted directory objects 210 and file objects 220 include the contents of objects while the transmitted stream objects 230 are references to other streams of broadcast. Stream object 240 may also include information regarding DSM-CC events that are broadcast within a particular stream. The DSM-CC event can be broadcast with the normal stream data and can be used to trigger the DSM-CC application. Many clients can retrieve the object implementation by pretending that the objects on the server are the client's object implementations by reading the carousel data that is repeatedly transmitted. Karuzel's objects provide a way for clients to access content used by applications and applications as if they had a connection to interact with the server.

6 is a diagram illustrating a data structure of a DSM-CC used in the present invention.

According to the DSM-CC specification, a module containing each content object is fragmented into one or more blocks. These blocks are transmitted as DownloadDataBlock (hereinafter referred to as DDB) message. Each DDB message is transmitted in the form of an MPEG-2 Section in order. The blocks may be obtained directly from the transport stream using a hardware filter of a demultiplexer. To acquire an object from a broadcast network, you must acquire all of the modules that it contains. Therefore, you need to know the module's transmission parameters such as module version, module size, block size, timing, and broadcast channel. These parameters are sent in the DownloadInfoIndication (DII) message, so you must acquire the DII message first to acquire the module. As a result, the process of acquiring an object from the broadcast network is performed through two steps: acquisition of a DII message and acquisition of a module.

In order to acquire an object transmitted in the broadcast stream, first, a DSI (DownloadServerInitiate) message is acquired and the ServiceGatewayInfo structure included therein is analyzed. One or more modules are gathered to create a group, and one or more groups are gathered to create a super group, wherein the DSI message includes information about the group in the super group.

Accordingly, in the present invention, the correspondence relationship information is generated so that the group code obtained by grouping each receiving apparatus 100 is matched with at least one transaction_id (400) of the DSI message and the DII message as shown in FIG. 6, Is filtered by only the transaction_id to receive the corresponding DDB to update or execute the content application.

Meanwhile, the content object generation unit 220 may assign an identification code for each group to the transaction_id of the content objects separated for each group as described above (S120).

The assignment of such identification codes is based on the Table 7.4 Semantic of the Transaction ID Field table of the data broadcasting service used in the ATSC A / 90 standard specification using the DSM-CC as shown in Table 1 below. And adding an identification code for each group.

Bits Value Sub-Field Description transaction_id [31..30] 10 Control
message
originator The value of this 2-bit field is defined in [16] as equal to 0x02 when the transaction_id has been assigned by the network. transaction_id [29..16] User-defined Control
message
version This 14-bit field shall be modified every time the control message is updated transaction_id [15.1] User-defined Control
message
identification This 15-bit field shall be used to identify the control message. This is a must for all zeros for the top-layer control message. All non-top-level control messages must have one or more non-zero bit (s) transaction_id [0] User-defined Updated flag This 1-bit field must be toggled every time the control message is updated

As described above, the Transaction_id can be created in the structure of the table, and the user can arbitrarily assign the identification code for the group to the User Defined area.

Then, the carousel generation module 230 generates a carousel integrating the content objects generated in step S120, and transmits the generated carousel to the RF module (step S130). The data structure of the carousel is as described above, and it can be configured to determine that it is an object for each group to be transmitted. Also, it is possible to use a method of transmitting a carousel having different contents set for each group by using a group ID setting field of the DSI for separating data for each group. Table 2 is an example of an A / 90 Group Information Indication field for indicating such a Group ID setting field.

On the other hand, the generated carousel can be transmitted in the form of a data broadcast as described above through the RF channel, and the receiving apparatus 100 can extract and execute the content object corresponding to the group.

7 is a diagram for explaining a process in which a receiving apparatus 100 of a content transmission system according to an embodiment of the present invention receives a karuzel and extracts and executes a corresponding content object.

Referring to FIG. 7, the receiving apparatus 100 receives relation information for determining which group each receiving apparatus 100 belongs to (Step S200). The relationship information may include correspondence relationship information between a serial number and a group identification code assigned to each receiving apparatus 100 at the time of the latest manufacture. Accordingly, each receiving apparatus 100 can compare the relation information with the serial number of each receiving apparatus 100 to determine which group is currently belonging. In addition, the server 200 can determine what ID code (ID) is designated for each group. The identification code assigned to the group may be Transaction_id information as described above.

Thereafter, the receiving apparatus 100 receives the carousel data including a plurality of content objects from the server 200 (step S210). The format and structure of the Karujel data are as described above.

Then, the receiving apparatus 100 filters the corresponding Transaction_id information corresponding to the identification code of the corresponding group from the received Karu gel data (step S220), and extracts from the filtered DSI or DII data the group to which the receiving apparatus 100 belongs One or more content objects are extracted (step S230).

Thereafter, the receiving apparatus 100 can execute the extracted content objects or perform an operation according to the object (step S240). An operation according to an object may be an operation of displaying an image, performing an update of the receiving apparatus 100, or receiving information from a user through an input device and transmitting the information to a network.

The administrator or user of the content transmission server 200 through the content transmission method, the apparatus and the system can group the receiving apparatuses 100 and transmit different contents according to each group. For example, in the case of a hospital, the content transmission method, the apparatus and the system can group the internal medicine, the surgery, the neurosurgery, and the like, and simultaneously provide the contents corresponding to the respective groups.

According to the embodiment of the present invention, in the case of a hotel, it is possible to group them by each floor, and transmit different contents corresponding to each floor through RF.

The content transmission method according to the present invention may be implemented as a program to be executed by a computer and stored in a computer-readable recording medium. Examples of the computer-readable recording medium include a ROM, a RAM, a CD- A magnetic tape, a floppy disk, an optical data storage device, and the like, and may also be implemented in the form of a carrier wave (for example, transmission over the Internet).

The computer readable recording medium may be distributed over a networked computer system so that computer readable code can be stored and executed in a distributed manner. And, functional programs, codes and code segments for implementing the above method can be easily inferred by programmers of the technical field to which the present invention belongs.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It should be understood that various modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention.

100: Receiver
200: Content transmission server

Claims (14)

delete delete delete delete delete Grouping a plurality of receiving apparatuses into one or more groups, generating identification codes corresponding to the groups, inserting an identifier into a content object to be transmitted to each group so as to correspond to each identification code, A server for creating and transmitting an object carousel including an object; And
Receiving, from the server, correspondence relationship information between the object carousel and the content object identifier and the identification code, determining a group to which the content belongs based on the correspondence relationship information, and storing an identification code and a content object identifier And extracting a content object corresponding to a group belonging to the group based on the extracted content object identifier from the object carousel. The method according to claim 6,
And the server transmits the object carousel to the plurality of receiving apparatuses via an RF channel. The method according to claim 6,
Wherein the identifier inserted in the content object is a transaction identifier included in at least one of download management information (DSI) information of the object carousel or download information indicator (DII). 9. The method of claim 8,
Wherein the plurality of receiving apparatuses detects a transaction identifier corresponding to a group belonging to the corresponding relationship information and filters and extracts a content object corresponding to the transaction identifier from the object carousel. The method according to claim 6,
The plurality of receiving apparatuses including respective serial information,
Wherein the correspondence relationship information includes at least one of the serial information and the transaction identifier information of the group and a corresponding group. delete delete delete delete

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