KR100801612B1 - Real time duplex communication method synchronized with digital multimedia broadcast channel - Google Patents

Abstract

The present invention relates to a two-way communication service synchronized with a digital multimedia broadcast, and more particularly, the currently broadcast digital multimedia broadcasting channel receiver can perform a two-way multimedia communication synchronized with the digital multimedia broadcasting channel in real time. The present invention relates to a real-time interactive communication system synchronized with a digital multimedia broadcasting and a method thereof.

The above-described system of the present invention comprises: a digital multimedia broadcasting server for transmitting digital multimedia broadcasting through at least one of a digital multimedia broadcasting network and an internet network; A bidirectional communication server which generates a multi-communication session synchronized for each broadcasting channel of the digital multimedia broadcasting server and then provides a bidirectional communication service between terminals forming the multi-communication session; Receives the broadcast of the digital multimedia broadcasting channel through any one of the digital multimedia broadcasting network or the Internet network, accesses the interactive communication server through the Internet network and participates in a multi-communication session synchronized with the broadcasting channel. And at least one terminal for performing two-way communication with the broadcast channel receiving terminals participating in the multi-session.

Digital Multimedia Broadcasting, Internet Protocol Television (IPTV), Voice Over IP (VOIP), Messenger, Push To Talk (PTT), Session Initiation Protocol (SIP)

Description

Real time duplex communication method synchronized with digital multimedia broadcast channel

1 is a schematic block diagram of a real-time interactive communication providing system synchronized with a digital multimedia broadcasting according to an embodiment of the present invention;

2 is a schematic block diagram of a terminal according to an embodiment of the present invention;

FIG. 3 is a block diagram of a user agent (UA) of the terminal of FIG. 2.

FIG. 4 is a diagram illustrating a user agent control screen of FIG. 2.

5 is a flowchart illustrating a process of a two-way communication method synchronized with a digital multimedia broadcasting of the present invention;

FIG. 6 is a flowchart illustrating a two-way communication participation process of a user agent in the process of FIG. 5.

7 is a flowchart illustrating a process of a digital multimedia broadcasting retransmission service as an embodiment of a two-way communication service among the processes of FIG. 5.

Description of the main symbols in the drawings

100: terminal

100a: mobile communication terminal 100b: personal computer

110: communication unit 120: control unit

130: user agent (UA)

131: protocol stack module 132: media codec

133: UA screen control module

134: broadcasting (digital multimedia broadcasting) retransmission module

140: display unit 140 ': user agent (UA) control screen

141: Broadcast (digital multimedia broadcasting) output window

142: advertising window 143: messenger window

144: Media type selection window

150: input unit 160: audio interface unit

200: digital multimedia broadcasting server (or "broadcast server")

300: interactive communication server

310: Registra Server (RS)

320: Presence Server (PS)

330: Location Server (LS)

340: Conference Server (CS)

400: network

410: digital multimedia broadcasting network 420: Internet network

The present invention relates to a two-way communication service synchronized with a digital multimedia broadcast, and more particularly, the currently broadcast digital multimedia broadcasting channel receiver can perform a two-way multimedia communication synchronized with the digital multimedia broadcasting channel in real time. The present invention relates to a real-time interactive communication system synchronized with a digital multimedia broadcasting and a method thereof.

Representative services currently provided by the development of communication network technology include digital multimedia broadcasting and Internet telephony, video conferencing, multimedia message transmission, terminal location service, instant message and presence service using a high-speed Internet network including a mobile communication network. Internet-based multimedia communication services including meetings, event notifications, and the like.

The Digital Multimedia Broadcast (Digital Multimedia Broadcast) is currently introduced in Korea as a terrestrial or satellite DMB, and refers to a broadcast service that provides various multimedia signals such as voice and video to a fixed, portable, and vehicle receiver in a digital manner.

In the above-described digital multimedia broadcasting, there are system A, Dh, and E systems.

System A follows the European Digital Broadcasting Standard (OFDM: Orthogonal Frequency Division Multiplexing) of digital satellite broadcasting and terrestrial digital multimedia broadcasting, and system Dh is based on terrestrial digital multimedia broadcasting, but adopts a hybrid method of accommodating satellite digital multimedia broadcasting. The system E adopts a code division multiple access (CDM) method which is almost the same as the code division multiple access (CDMA).

In addition, the Session Initiation Protocol provides a call control signal processing function for setting, modifying, and terminating a multimedia session for an Internet-based multimedia service as described above. It is a signaling protocol proposed by the Multiparty Multimedia Session Control (MMUSIC) of the Internet Engineering Task Force (IETF) as a protocol for creating, modifying, and terminating.

The Session Initiation Protocol (SIP) is based on a client / server structure in which the server responds to the call when the client initiates the call and can create various services in combination with many other protocols used on the Internet. Provide flexibility and scalability. A typical example of such a service is the Session Advertise Protocol (SAP), which provides information about the session to interested groups, INVITEs for people who want to talk over SIP to join the session, and opens it through the Session Description Protocol (SDP). Exchange information about media types. In addition, it provides a real-time multimedia communication service using the RTP described in the SDP.

Digital multimedia broadcasting as described above is only to deliver unilateral information to viewers. That is, a service that enables viewers receiving the same broadcast channel to perform two-way communication with each other is not provided.

Recently, a system for interactive conversation with viewers has been introduced in VOD, but there is no system in the current broadcasting system that can generate opinions or more active participation in broadcasting among viewers.

Accordingly, the present invention is to solve the above-mentioned problems of the prior art, and when receiving a digital multimedia broadcast using digital multimedia broadcast (DMB) or IPTV, and the like to synchronize with the broadcast channel to users receiving the broadcast of the same channel It is an object of the present invention to provide a two-way communication system and a method synchronized with the digital multimedia broadcasting to provide a two-way multi-communication session to allow users receiving the same broadcast channel to perform interactive multimedia communication with each other.

A two-way communication system synchronized with a digital multimedia broadcasting for achieving the above object comprises: a digital multimedia broadcasting server for transmitting digital multimedia broadcasting through at least one of a digital multimedia broadcasting network and an internet network; A bidirectional communication server which generates a multi-communication session synchronized for each broadcasting channel of the digital multimedia broadcasting server and then provides a bidirectional communication service between terminals forming the multi-communication session; Receives the broadcast of the digital multimedia broadcasting channel through any one of the digital multimedia broadcasting network or the Internet network, accesses the interactive communication server through the Internet network and participates in a multi-communication session synchronized with the broadcasting channel. And at least one terminal for performing two-way communication with the broadcast channel receiving terminals participating in the multi-session.

In the above-described present invention, the multi-communication session refers to a communication combination in which terminals are simultaneously connected to perform one-to-many, one-to-one, many-to-many two-way multimedia communication between the connected terminals. That is, terminals participating in the multi-communication session (session connection) are connected to multiple terminals such as push to talk (PTT), voice messenger service by VOIP, text messenger service, multimedia file transfer service, and broadcast retransmission service. The multimedia communication service may be provided. In the description of the present invention, the multi-communication session is referred to as a conference room (CR), and the multi-media communication service as described above provided by the CR is called a conference room service (CR service).

The two-way communication server providing the conference room service as described above generates a multi-communication session for each digital multimedia broadcasting channel, and registers a terminal notified by a session initiation protocol (SIP) message from a status check function unit. A conference service unit that participates in a multi-communication session and then provides a multi-media communication service by the multi-communication session; A registra unit for receiving an access request SIP message for a multi-communication session corresponding to the digital multimedia broadcasting channel received from the terminal and performing authentication and registration for the SIP access request of the terminal; And a status checking function for storing the terminal information registered in the registrar unit and notifying the terminal information by the SIP message to the conference service unit.

The digital multimedia broadcasting server receives a text message transmitted by a terminal connected to the multi-communication session from the conference service unit, adds the digital multimedia broadcasting signal as a caption signal to the currently transmitted digital broadcasting signal, or displays it in a messenger window via an IP network. To ...

The status check function unit generates viewer rating survey information for each region by using the registered terminal information, the digital multimedia broadcasting channel information and location information being received by the terminal.

The terminal includes: a protocol stack module for controlling processing of SIP, SDP, and RTP for setting, changing, and releasing a SIP session of the terminal; A media codec for encoding and decoding data of the received multimedia; A user agent screen control module (UA (User Agent) screen control module) for performing screen control for digital multimedia broadcasting output and user control; and a broadcast retransmission module for retransmitting the received digital multimedia broadcasting through an internet network. Characterized in that it comprises a user agent (UA: provided).

The user agent having the above-described configuration controls access to an interactive communication server by SIP, participation in multiple communication sessions of a conference service unit, and multimedia data communication with other terminals using the participating multiple communication sessions.

A bidirectional communication method synchronized with a digital multimedia broadcasting for achieving the above object comprises: a multi-communication session generating step of generating a multi-communication session synchronized to the broadcasting channel according to digital multimedia broadcasting channel information; Establishing a multiple communication session for joining the terminal receiving the digital multimedia broadcasting channel to the multiple communication session; And a two-way communication service providing process for providing a two-way multimedia transmission service between terminals participating in the multi-communication session by the multi-communication session setting process.

The multi-communication session setting process may include: a connection request message receiving step of receiving a connection request signal of a multi-communication session corresponding to a broadcast channel received from the digital multimedia broadcasting receiving terminal; And storing the access request message information as status confirmation information and then joining the terminal to the multi-communication session using the message information.

The bidirectional communication service providing process may be performed by using the voice and text messenger service, the multimedia file transmission service, and the multimedia data transmission information and location information of the multiple communication session participating terminals. And at least one of a viewer rating information generation service for generating viewer rating information of a broadcast channel corresponding to a session, and a broadcast retransmission service for retransmitting the terminal-received digital multimedia broadcasting signal through the Internet.

During the two-way communication service providing process, the broadcast retransmission service targets a broadcast retransmission service using terminal information transmitting a retransmission broadcast reception registration SIP message and a broadcast retransmission registration SIP message transmitted from a terminal receiving a broadcast signal of a current broadcast channel. A broadcast retransmission terminal information collecting step of collecting terminal information; A broadcast retransmission terminal grouping step of grouping the broadcast retransmission terminals collected in the broadcast retransmission terminal information collection process; Among the grouped broadcast retransmission terminals, the broadcast retransmission registration terminal is provided by a broadcast retransmission process of transmitting a digital multimedia broadcast signal received by the RTP to the retransmission broadcast reception registration terminals in the group.

The broadcast retransmission terminal grouping process is a process of grouping adjacent terminals using location information of the terminals.

The broadcast retransmission process may include: broadcast retransmission registration terminal information providing process for providing list information of broadcast retransmission registration terminals in the group to the grouped retransmission broadcast reception registration terminals; A broadcast retransmission registration terminal selection process of selecting any broadcast retransmission registration terminal from a list provided in the broadcast retransmission registration terminal information providing process; And a broadcast signal transmission step of retransmitting the digital multimedia broadcast received through the Internet to the retransmission broadcast reception registration terminal selected by the broadcast retransmission registration terminal selected in the broadcast retransmission registration terminal selection process.

In the above-described present invention, the multi-communication session establishment process is performed by SIP, and multimedia data transmission by the multi-communication service is performed by RTP by SDP.

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

1 is a schematic block diagram of a real-time interactive communication system synchronized with a digital multimedia broadcasting according to an embodiment of the present invention, Figure 2 is a schematic block diagram of a terminal according to an embodiment of the present invention, 3 is a block diagram of a user agent (UA) of the terminal of FIG. 2, and FIG. 4 is a diagram illustrating a user agent control screen for two-way communication synchronized with digital multimedia broadcasting according to the present invention.

As shown in FIG. 1, a real-time interactive communication system synchronized with the digital multimedia broadcasting of the present invention is a channel of a digital multimedia broadcasting service provided through an internet network or a digital multimedia broadcasting network (hereinafter referred to as a "broadcast network") (hereinafter referred to as "broadcast channel"). A terminal 100 which is connected to a conference room (CR) opened in synchronization with a mobile station using a SIP message and receives a conference room (CR) service (hereinafter referred to as a “CR service”); A digital multimedia broadcasting server (hereinafter, referred to as a "broadcast server") 200 for providing a digital multimedia broadcasting service through at least one of the digital multimedia broadcasting network and the internet network; A registrar service, a status check function service, and location information for providing a two-way communication service synchronized to a broadcast channel received between terminals by joining the CR to access the CR service after receiving the SIP message of the terminal. It comprises a two-way communication server 300 that provides services (location services) and conference room services.

In FIG. 1, a registrar unit that provides a registrar service as a registrar unit of the present invention is a registrar server (RS) 310, and a state check function unit that provides a status check function service of the present invention is a state check function server (PS). Presence Server (320), the location information providing unit for providing a location information providing service of the present invention to a location server (LS) (330), a conference service (CR service) unit for providing a conference service of the present invention A conference server (CS) 340 is illustrated.

The terminal 100 illustrated in FIG. 1 may be configured as a mobile communication terminal 110 or a personal computer 120 having a two-way communication function for receiving a digital multimedia broadcasting reception function and a CR service by SIP protocol control. . At this time, the mobile communication terminal 110 is equipped with a broadcast receiving antenna and digital multimedia broadcasting signal reproduction function for receiving digital multimedia broadcasting, and is equipped with a user agent for receiving a CR service, the personal computer 120 is a digital multimedia A broadcast receiving module and a digital multimedia broadcasting signal reproducing function are provided, and a user agent for receiving a CR service is mounted.

2 to 4 are views showing a common configuration of the terminal 100 of the present invention.

The terminal 100 of FIG. 1 will be described in more detail with reference to FIGS. 2 to 4 as follows.

As shown in FIG. 2, the terminal 100 of FIG. 1 uses either the digital multimedia broadcasting network 410 or the internet network 420 regardless of the mobile communication terminal 100a or the personal computer 100b. A communication unit 110 for receiving a broadcast signal of a digital multimedia broadcasting channel and performing packet data communication through the Internet network 420; A control unit 120 for receiving a broadcast signal and controlling packet communication by the communication unit 110 and encoding and decoding packet data transmitted and received; Send and receive SIP messages with the interactive communication server 300 of FIG. 1 through the control unit 120 to establish a session for CR connection, and perform interactive multimedia communication with another terminal via the CR using SDP and RTP. A user agent (UA) 130 providing a user agent control screen (hereinafter referred to as "UA control screen") 140 'for providing a CR service; A display unit 140 for outputting driving state information of the terminal and the UA control screen 140 '; An input unit 150 for receiving a user control command; And an audio interface unit 160 including a microphone, a speaker, an AD / DA converter, and the like, for input and output of a sound signal for transmitting and receiving a user's audio.

In the above-described configuration, the communication unit 110 includes, in the case of the mobile communication terminal 110, an RF unit including an RF antenna for RF communication with a base station and a digital multimedia broadcasting antenna for receiving digital multimedia broadcasting. In the case of the personal computer 120, the personal computer 120 may include a network connection interface such as a LAN card and an ATM card, and an external or internal digital multimedia broadcasting receiver. When watching IPTV, the mobile communication terminal is connected to the wireless Internet network, and the personal computer is connected to the Internet network. In this case, IP addresses are assigned to mobile terminals and personal computers.

The terminal 100 having the above-described configuration is provided with a CR service by the UA 130 and performs a function of retransmitting a broadcast signal of a broadcast channel being received to another terminal through an internet network using RTP.

That is, the UA 130 is driven when there is a user's broadcast channel selection and sends a SIP event subscription message having the broadcast channel information and the terminal or user identifier information to the RS 310 to log in to the CS 340. VOIP by RTP after being connected. PTT. CR services are provided through various interactive multimedia communication such as SMS. The broadcast retransmission is performed by the user setting and the SIP control message of the CS 340.

The UA 130 performing the above-described functions operates in a client format (UAC, User Agent Client) when transmitting a connection request message, and in a server format (UAS, User Agent Server) when receiving and processing an access request message. ) The UA 130 may establish a direct connection with another UA or establish a connection with another UA with the help of Proxy / Redirect Servers, and may store and manage a call state.

For the above function, the UA 130 includes a protocol stack module 131 for controlling SIP-SDP-RTP, as shown in FIG. 3; A media codec 132 for encoding and decoding multimedia transmitted and received by RTP; A UA screen control module 133 which performs screen control for broadcasting output and user control; It comprises a broadcast retransmission module 134 for broadcast retransmission.

In the above configuration, the protocol stack module 131 performs SIP signaling processing for establishing a session with the CS 340 for CR service in the application layer, SDP signaling processing for changing the established session, and transmission and reception of multimedia data through the established session. Perform RTP signal processing for.

The media codec 132 decodes the multimedia data input from the controller 120 and outputs the decoded information to the screen control module 133. The terminal 100 encodes and outputs the file data to the multimedia including the voice, text, image, and the like that the user wants to transmit. The encoded data is transmitted to the destination terminal or CS 340 by RTP.

Next, the UA screen control module 133 generates and outputs a UA control screen 140 'that simultaneously outputs the multimedia data file type input from the media codec 132 and the broadcast signal information input from the control unit 120. . The controller 120 outputs interactive multimedia communication data together with the broadcast screen on the display unit according to the output UA control screen 140 '.

4 is a diagram illustrating an embodiment of the UA control screen 140 ', and as shown in FIG. 4, the UA control screen 140' includes a broadcast output window 141 for outputting a broadcast signal; An advertisement window 142 for outputting an optical message, a messenger window 143 for a text messenger service; It may be configured to include a function selection window 144 for function selection for multimedia interactive communication.

In this case, the advertisement window 142 may be configured to be output only when the advertisement reception is set, so that only the advertisement reception setter may receive the advertisement money generated according to the advertisement reception.

And the function selection window 144 is a retransmission button (PTT (1), VOIP (2), Message (3), retransmission (4) ...) and drawings for services such as PTT, VOIP, Message, broadcast retransmission Although not shown, there are provided function buttons such as a file attachment. And the selection of each button can be assigned to a specific key of the keypad.

In more detail, when the user selects the PTT in the function selection window 144, the voice input by the user after pressing a specific key is converted into a digital signal and then transmitted to the CS 340 by being included in an RTP packet. The CS 340 receives the broadcast of the same broadcast channel and transmits the signal through multicast or broadcast to the terminals connected to the CR so that the sender's voice signal is output from other terminals receiving the same broadcast channel. do. In this case, the playback of the audio signal is performed by the media codec of each UA 130.

Next, the VOIP (1) button provides a voice call service through the Internet, so that the terminal user receives the same broadcast channel and performs a voice call with a specific user or a group user connected to the CR.

The message (3) button provides a messenger service by the message window, and the resend 4 button enables to set a broadcast retransmission request or a retransmission broadcast reception among the broadcast retransmission functions to be described with reference to FIG.

The file button, not shown, attaches a file to a transmitted message or transmits and receives a file to a specific terminal selected by a user or to an entire terminal connected to a CR.

The system configuration of the present invention will be described with reference to FIG. 1 again with reference to the system configuration of the present invention.

In the case of FIG. 1 described above, each function of the bidirectional communication server 300 is illustrated as a server separated from each other so as to be performed by an independent server. In this case, a registrar server (RS) 310 provides a registrar service as a registrar unit of the present invention, and a status check function server (PS) 320 is a state check function as a status check function of the present invention. It provides a functional service, the location server (LS: Location Server) 330 provides a location information providing service as a location information providing unit of the present invention, Conference Server (CS) (340) is a conference of the present invention As a service unit, a conference service (CR service) is provided as an independent server which is interlocked with each other. However, each server is integrated in one server, which is a two-way communication server 300, in the form of a service. May be provided.

Each server described above is described in detail as follows.

The RS 310 performs authentication on whether the terminal 100 is a user for establishing a legitimate SIP session by using a SIP message transmitted from the terminal 100, extracts terminal information on which authentication has been performed, and outputs the PS 320. ) To send to. That is, the RS 310 extracts the terminal identifier information from the header of the event subscribe message of the SIP transmitted from the terminal 100 and performs authentication on the terminal that transmitted the corresponding message. Terminal identifier, location information, address information) to extract and transmit to the PS (320).

The PS 320 stores identifiers, locations, connection states, received broadcast channel information, etc. of terminals in which a session by SIP transmitted from the RS 310 is established. In addition, by using the stored state information of the terminal participating in the CR in real time, the viewer performs additional functions such as audience rating survey and billing for the broadcast channel synchronized with the CR. In this case, the PS 320 may investigate a region rating of the broadcast channel reception by using the location of the terminal and the received broadcast channel information among the CR access terminal status information. In addition, in the case of advertisement provision, the PS 320 generates advertisement money payment information according to advertisement reception to a user of a terminal that has registered to receive advertisements.

The LS 330 stores and manages location information of a SIP UA, and stores actual location information and address information of a connected UA terminal. In order to provide actual location information of the terminal, the LS 330 may be configured to interwork with HAL, GPS, etc. of the mobile communication network. In addition, the LS provides address information for identifying a transmission path of a SIP message received by a proxy or redirect server, which is not shown in the drawing by storing address information.

The CS 340 generates a conference room (CR) synchronized with a digital multimedia broadcasting channel (hereinafter, referred to as a "broadcast channel") currently broadcasted by the broadcast server 200, and CR from the PS 320 by SIP. After receiving the user terminal information requested for the connection to establish a session for multimedia two-way communication and provides a CR (Conference Room) service between the terminals watching the corresponding broadcast channel by the Real Time Transport Protocol (RTP). In this case, the CS 340 may store digital multimedia broadcasting time information of the broadcasting server 200 to generate a CR synchronized with the broadcasting channel.

In addition, a conference room (CR) provided by the CS 340 refers to a multi-communication session for user terminals that receive the same broadcast channel and accesses the CR. Refers to a service that enables interactive multimedia communication such as voice, text message, PTT service, multicast, or broadcast broadcast in real time. In addition, the CS 340 controls the digital multimedia broadcasting retransmission function (hereinafter, referred to as "broadcast retransmission function") between terminals, which will be described in more detail with reference to FIG. 7.

The SIP message transmitted in the present invention is generally composed of a start line, a header, and a message body. Here, the start line describes a method of requesting a message and an address of a message transmission target such as a SIP URI. In the header, values such as terminal identifier information for controlling a session are set. Next, the message body contains the content of the type set in the content-type in the header. The message body may include a description of a media type using SDP.

In the present invention, sessions of terminals for a CR service are established through an event subscribe message and a notify message among SIP messages having the structure described above. That is, in order to receive the CR service in the system of the present invention, the terminal 100 transmits a SIP event subscribe message to the RS 310, and the RS 310 transmits the terminal 100 information to the PS 320. To send). The PS 320 stores the terminal 100 information and then notifies the CS 340 to an event notify message, and the CS 340 of the CR synchronized with the broadcast channel to which the terminal 100 is received. The terminal 100 participates in a multi-communication session for two-way communication so that the terminal 100 is connected to the CR to receive a two-way communication service (CR service) by the CR.

In addition to the above-described configuration, the above-described system of the present invention further includes a SIP proxy server for forwarding SIP messages to a transmission destination address, a redirect server for extracting and providing a delivery destination address, and the like. This is obvious in the prior art, so the detailed description thereof will be omitted.

FIG. 5 is a flowchart illustrating a process of a bidirectional communication method synchronized with a digital multimedia broadcasting of the present invention. FIG. 6 is a flowchart illustrating a bidirectional communication participation process of a user agent during the process of FIG. 5. FIG. 7 is a flowchart of FIG. FIG. 1 is a flowchart illustrating a process of processing a digital multimedia broadcasting retransmission service as an embodiment of a two-way communication service.

Hereinafter, a process of the bidirectional communication method synchronized with the digital multimedia broadcasting of the present invention will be described in detail with reference to FIGS. 5 to 7.

As shown in FIG. 5, for two-way communication synchronized with the digital multimedia broadcasting of the present invention, the CS 340 generates a CR in synchronization with a broadcast channel. To this end, the CS 340 receives the broadcasting channel information from the broadcasting server 200 in real time or stores the broadcasting channel information (S1).

The CS 340 that generates the CR corresponding to the broadcast channel information receives the terminal information (or user information) equipped with the UA 130 that sends the CR connection request to the PS 320 while receiving the broadcast channel corresponding to the CR. After requesting and receiving through the SIP Event Subscribe message, the session is set up so that the UAs 130 of the terminal 100 can be provided with the CR service by the CR corresponding to the broadcast channel received by the corresponding UAs. And set the session as a session group for multiple communication. In this process, when the terminal information requesting CR participation is input, the PS 320 transmits the corresponding information to the CS 340 in real time, and the CS uses the received broadcast channel information of the terminal among the received information. The UE joins the CR by establishing a session for the CR service with the UA 130 (S2).

FIG. 6 is a flowchart illustrating a two-way communication participation process of user agents UA in the above-described S2 process.

The user who wants to participate in the CR generated by the above-described S1 process drives the UA 130 in his terminal 100, and during the initial driving, the UA 130 sends the SIP information to the SIP event for the CR service. A login message is transmitted to the RS 310 as an event subscribe message. The SIP event subscription message for the login procedure may be directly transmitted by the UA 130 including preset information when the user selects a broadcast channel after execution of the UA, or by outputting a login information input screen of the user. Can be done. In addition, the SIP event subscribe message transmitted for user login includes the broadcast channel information selected to be output on the UA control screen 140 '(S21).

Upon receiving the SIP event subscribe message from the UA 130 of the terminal 100, the RS 310 performs authentication using a user identifier or a terminal identifier among the received information. When authentication is performed, the terminal transmits the terminal information or the user information from the received information and the UA information such as the reception broadcast channel information to the PS 320 (S23).

After receiving the UA information in step S23, the PS 320 registers and stores the received UA information and immediately waits for the reception of the SIP event subscription message from the CS 340 without receiving a SIP event notify message. Through UA informs the CS 340 of the UA information including the user information of the terminal requesting to participate in the CR synchronized to the reception broadcast channel and the reception broadcast channel information. Receiving the UA information, the CS 340 currently receives the user through the terminal UA by adding a session with the UA of the terminal having the UA information to the session of the CR corresponding to the broadcast channel information included in the corresponding UA information. Participate in the CR synchronized with the broadcast channel (S24).

Next, the process of the present invention will be described with reference to FIG. 5 as follows. After the CR is generated by the processes S1 and S2 of FIG. 5 and the process of FIG. 6 as described above, and a multi-communication session between the terminals for the CR service is established, the RTP communication is performed via the CR or directly between the terminals. PTT, VOIP, messenger, broadcast retransmission service, viewership survey service by presence check function, advertisement service that provides advertisement request or preset advertisement broadcasting of specific terminal and pays advertising money to the receiver. It provides various CR services such as MO (Mobile Orient) service for transmitting the transmitted character information to the subtitle signal included in the broadcast signal of the broadcast channel through the broadcast server 200 (S3).

Here, the viewer rating survey service using the presence check function of the above-described CR service is performed in the PS 320. That is, the PS 320 server extracts the UA information synchronized to the broadcasting channel currently broadcasting by using the presence presence function of the SIP, receives the location information of the terminal participating in the CR from the LS 330, and receives the corresponding CR. Generate viewer rating information for each region and time zone of the broadcast channel corresponding to the broadcast channel. And by receiving the multimedia data information transmitted from the UA of the terminal 100, it is possible to include not only the broadcast but also the case where the viewer is actually watching the viewer rating. Therefore, the viewer rating survey by the PS 320 of the present invention enables to investigate the accurate viewer rating according to the actual participation state by region.

Next, when the UA 130 of the terminal 100 transmits the advertisement information selected by the user by RTP, the CS 340 broadcasts the received advertisement information to the UAs of terminals connected to the CR ( broadcast). In contrast, the present invention may be provided with a separate advertising service for the advertising service, in this case UA 130 of the terminal 100 transmits the advertisement information selected by the user to the ad server, the ad server of the PS (320) By using the information, the UA 130 transmits the UA to the UAs of terminals connected to the CR corresponding to the broadcast channel by a broadcast method. In this case, the UAs 130 of the receiving terminals 100 may set whether to receive an advertisement, and the PS stores the advertisement information transmitted to the UA 130 of the terminals 100 to which the advertisement reception is set, and subsequently, the terminal user of the corresponding UA. Ad money may also generate advertisement money information.

The broadcast retransmission service receives digital multimedia broadcasts by transmitting digital multimedia broadcasts to an IP network (Internet network) by a user having good digital multimedia broadcast reception quality for a user who does not have a digital multimedia broadcasting receiver and a digital multimedia receiver. It is a service that allows users who do not have a quality deterioration and digital multimedia receiver to participate in digital multimedia broadcasting through an IP network.

The above-described broadcast retransmission service of the present invention extends the digital multimedia broadcasting area to extend the digital multimedia broadcasting to the Internet network so that users who do not have a broadcast receiver can also receive the broadcasting via the Internet, Terminals located in regions with poor reception quality can receive digital multimedia broadcasting through the Internet, thereby eliminating broadcasting shade areas, which can be an effective solution for terminating terrestrial DMB.

7 is a flowchart illustrating a processing procedure for the above-described broadcast retransmission service.

As illustrated in FIG. 7, UAs 130 of terminals 100, in which a user sets a broadcast retransmission function among terminals receiving a broadcast signal of a current broadcast channel, periodically check the quality (signal-to-noise ratio) of their received broadcast channel signal. Etc.) and data transmission delay information of the Internet network, and if it exceeds a predetermined standard, the SIP message for registration of broadcasting retransmission is transmitted to the CS 340 and registered. In addition, the UA 130 of the terminals having poor quality of the broadcast signal transmits and registers a SIP message for retransmission broadcasting reception registration to the CS 340 (S31).

The CS 340 groups the terminals that have performed the retransmission broadcast registration to the terminals that have registered the broadcast retransmission. In this case, the CS 340 may group terminals that have registered retransmission broadcast reception to terminals that have locally registered broadcast retransmission registration using terminal location information or GPS information of the LS 330 (S32).

The group of terminals that have performed retransmission broadcast registration to the terminals that have registered broadcast retransmission registration grouped in step S32 may include at least one broadcast retransmission registration terminal. When only one broadcast retransmission registration terminal is registered, a session for broadcast retransmission is established with a plurality of retransmission broadcast reception registration terminals.

In contrast, when two or more broadcast retransmission registration terminals are included, the CS 340 transmits broadcast retransmission registration terminal list information to retransmission broadcast reception registration terminals. The user of the retransmission broadcast receiving registration terminal receiving the list of broadcast retransmission registration terminals selects a specific terminal among the broadcast retransmission registration terminals, and thereby broadcast retransmission between the selected broadcast retransmission registration terminal and the selected retransmission broadcast receiving registration terminals. A session is established for. In this case, the retransmission broadcast receiving registration terminals may select a broadcast retransmission registration terminal having the best transmission quality by selecting a broadcast retransmission registration terminal and checking a network delay.

As described above, the session of the selected terminals is formed between the UAs 130 operating in the application layer of the broadcast retransmission registration terminal and the retransmission broadcast reception registration terminals (S33).

After the broadcast retransmission registration terminal is selected by the retransmission broadcast reception registration terminal by the step S33 and the session is established, the received broadcast signal is converted into video compressed data such as MPEG4 by the broadcast retransmission registration terminal into a P2P format by using RTP. It transmits to itself and the retransmission broadcast receiving registration terminals established a session (S34).

As a result, users with poor reception quality or users who do not have a digital multimedia broadcasting receiver can receive digital multimedia broadcasting through the Internet.

The present invention performing the configuration and processing as described above can have the effect of equally watching the broadcast on the cyber using digital multimedia broadcasting and interactive communication through the Internet. In addition, digital multimedia broadcasting and SIP can be used to create various added values to users.

The present invention as described above is not only a viewer watching digital multimedia broadcasting in broadcasting such as sports games, but also gathered in an open chat room in cyber as if they are watching in one place to see the broadcast and communicate each other effectively through their own advertising messages. Through communication, opinions about broadcasting can be shared with each other, and by real-time interactive broadcasting, the same experience can be experienced regardless of region in cyberspace.

In addition, the present invention described above is not merely playing the broadcast using the presence function of the SIP (Presence) function, but actually participates in the case of investigating separately, and performs a survey of viewer ratings by region using the location information of the terminal very accurately. You may.

You can also use PTT (Push To Talk) to deliver your voice to many people at the same time to make them feel more united.

The present invention as described above provides a conference room service synchronized with a digital multimedia broadcast received upon reception of a digital multimedia broadcast, thereby providing the same effect as terminal users receiving the same digital multimedia broadcast together at the same place. do.

In addition, the present invention described above provides an effect of more efficiently performing an audience rating survey for digital multimedia broadcasting by monitoring the same digital multimedia broadcasting receiving terminals participating in a conference room by SIP.

In addition, the present invention described above provides an effect of enabling efficient advertisements by confirming the reception of advertisements of terminals when performing advertisements through a conference room.

In addition, the present invention described above is capable of performing multimedia communication in both directions during broadcasting through an IP network (Internet network) using SIP, and by re-transmitting digital multimedia broadcasting, digital digital broadcasting network and the Internet network to converge the digital It provides the effect of expanding the multimedia broadcasting market.

Claims (10)

delete delete delete delete A multi-communication session generating step of generating a multi-communication session synchronized to the broadcast channel according to digital multimedia broadcast channel information; Establishing a multiple communication session for joining the terminal receiving the digital multimedia broadcasting channel to the multiple communication session; The multi-communication session is established by using a voice and text messenger service, a multimedia file transfer service, and multimedia data transmission information and location information between the multi-communication session participating terminals. Providing an interactive communication service providing at least one or more of a viewer rating information generation service for generating viewer rating information of a broadcasting channel corresponding to a session, and a broadcast retransmission service for retransmitting the terminal digital multimedia broadcasting signal through the Internet; , The broadcast retransmission service is a broadcast retransmission terminal for collecting broadcast retransmission service target terminal information by using terminal information transmitting a retransmission broadcast reception registration SIP message and a broadcast retransmission registration SIP message transmitted from a terminal receiving a broadcast signal of a current broadcast channel. A broadcast retransmission terminal grouping group for grouping the broadcast retransmission terminals collected in the broadcast retransmission terminal information collection process, and a broadcast retransmission registration terminal among the grouped broadcast retransmission terminals to receive a digital multimedia broadcasting signal received by RTP; And a broadcast retransmission process for transmitting to the retransmission broadcast receiving registration terminals in the group. The method of claim 5, wherein the multi-communication session is set up. A connection request message receiving step of receiving a connection request signal of multiple communication sessions corresponding to a broadcast channel received from the digital multimedia broadcasting receiving terminal; And a participation in a multi-communication session for storing the access request message information as status information and joining the terminal to the multi-communication session using the message information. Communication method. delete delete The method of claim 5, wherein the grouping of the broadcast retransmission terminals is a process of grouping adjacent terminals by using location information of the terminals. 7. The method of claim 5, wherein the broadcast retransmission process, A broadcast retransmission registration terminal information providing process of providing list information of broadcast retransmission registration terminals in the group to the grouped retransmission broadcast reception registration terminals; A broadcast retransmission registration terminal selection process of selecting any broadcast retransmission registration terminal from a list provided in the broadcast retransmission registration terminal information providing process; And a broadcast signal transmission step of retransmitting a digital multimedia broadcast received through an internet network to a retransmission broadcast reception registration terminal selected by the broadcast retransmission registration terminal selected in the broadcast retransmission registration terminal selection process. Real-time two-way communication method synchronized with.

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