KR101136790B1 - System and method for providing video on demand service and realtime channel broadcasting service - Google Patents

Abstract

A system for providing a video on demand (VOD) service and a real-time channel broadcasting service includes a VOD service provider for providing the video on demand (VOD) service, a real time channel broadcast provider for providing the real time channel broadcast service, and a real time during VOD data transmission. The session control unit maintains the VOD session for a predetermined time when the channel broadcast is switched, and provides a resume of the VOD through the maintained session when a request for resuming transmission of the VOD data is received within the predetermined time. Include.

Video on demand, live channel broadcasts, sessions

Description

SYSTEM AND METHOD FOR PROVIDING VIDEO ON DEMAND SERVICE AND REALTIME CHANNEL BROADCASTING SERVICE}

The present invention relates to a system and method for providing a video on demand (VOD) service and a real-time channel broadcasting service using IPTV, and more particularly, when a user watches a real-time channel broadcasting while using a video on demand (VOD) service. Instead of immediately terminating the existing VOD session, it is maintained for a predetermined time, and when the user requests the video on demand service again within the predetermined time, the suspended VOD session is resumed to resume the VOD contents. It relates to a system and a method for providing.

With the spread of the Internet and the development of digital broadcasting technology, the use of two-way broadcasting services provided by high-speed Internet networks is increasing.

Two-way broadcasting service is a service that provides information service, video contents, and broadcasting to two-way broadcasting receivers (eg, IPTV, DMB receivers, set-top boxes, etc.) using high-speed Internet. Various contents and additional services provided by the Internet such as home banking, online games, and MP3 can be provided.

A representative type of such a two-way broadcast service is an IPTV (Internet Protocol Television) service.

The IPTV service includes a real-time broadcasting service provided by a content producer and a video on demand (VOD) service that provides desired content at a desired time by a viewer. There are various types of contents.

The user must select the content he / she wants from numerous types of real-time broadcasting channels and video on demand (VOD) content, and can watch the content while moving between the real time broadcasting service and the video on demand (VOD) service.

In this case, in order to watch a specific content using a video on demand (VOD) service, it is inconvenient to first select an upper category in which the content is included, and to search for and select the content. Furthermore, when using a real-time broadcasting service while watching a specific content using a video on demand (VOD) service, the VOD session for transmitting the video on demand (VOD) content is terminated. VOD) If you want to watch the content subsequently, there was an inconvenience to repeatedly perform the process of searching and selecting the content.

Some embodiments of the present invention maintain a connected VOD session when a user watches a real-time channel broadcast while using a video on demand (VOD) service, and the user returns to the video on demand service within a predetermined time. When requested, the present invention provides a video on demand (VOD) service and a real time channel broadcasting service providing system and method for providing VOD contents through the maintained VOD session.

As a technical means for achieving the above technical problem, the first aspect of the present invention is a VOD service provider for providing the video on demand (VOD) service, a real-time channel broadcast provider and VOD data for providing the real-time channel broadcasting service When switching to real-time channel broadcasting during transmission, the VOD session is maintained for a predetermined time, and when a request to resume transmission of the VOD data is received within the predetermined time, providing a replay of the VOD through the maintained session. A video on demand (VOD) service and a real time channel broadcast service providing system including a session controller may be provided.

In addition, a second aspect of the present invention is to (a) receiving a switch request for a real-time channel broadcast service from a user terminal receiving a video on demand (VOD) service, (b) maintaining a VOD session for a predetermined time (c) determining whether there is a request for resuming the on-demand video (VOD) service within the predetermined time; and (d) if a request for resuming the on-demand video (VOD) service is received within the predetermined time. It is possible to provide a video on demand (VOD) service and a method for providing a real-time channel broadcasting service including providing a replay of a VOD through the maintained session.

According to the above-described problem solving means of the present invention, the VOD session is not interrupted even when watching the real-time channel broadcast while using the video-on-demand (VOD) service, so that the VOD content watched immediately before watching the real-time channel broadcast is continuously viewed again. If desired, the user can watch continuously from the previous playback scene without searching and selecting the VOD content.

In addition, according to the above-described problem solving means of the present invention, it is possible to switch from the real-time channel broadcasting to the VOD service and to continue using the hot key installed in the remote control, and to the real-time channel broadcasting of the VOD service It is also possible to switch the user's convenience by using a simple operation on the remote control.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is "connected" to another part, this includes not only "directly connected" but also "electrically connected" with another element in between. . In addition, when a part is said to "include" a certain component, which means that it may further include other components, except to exclude other components unless otherwise stated.

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

1 is a detailed configuration diagram of an IPTV (Internet Protocol Television) service system that provides a video on demand (VOD) service and a real-time channel broadcasting service according to an embodiment of the present invention.

As shown in FIG. 1, an IPTV service system according to an exemplary embodiment of the present invention includes a broadcaster 1000, an IPTV broadcast system 2000, a network 3000, and a user terminal 4000.

In addition, the IPTV broadcasting system 2000 includes a baseband system 2100, a compression multiplexing system 2200, a conditional access system (CAS) 2300, a monitoring system 2400, and a media operation core. : MOC 2500, EPG (Electronic Program Guide) system 2600, VOD service providing system 2700, real-time channel broadcasting providing system 2800, and session control system 2900.

The broadcaster 1000 serves to produce, edit, and change broadcast content and provide it to the IPTV broadcast system 2000. The broadcaster 1000 may include a program provider (PP), a terrestrial wave, or a content provider (CP). In addition, the broadcast content provided by the broadcaster 1000 may include existing broadcast content and rich content on the Internet.

The IPTV broadcasting system 2000 receives and manages broadcast content from the broadcaster 1000 and distributes content to the user terminal 4000 to provide broadcast / recording / playback services. The received broadcast content may include related additional information and an electronic program guide (EPG) for such additional information.

The IPTV broadcasting system 2000 includes EPG information (PSIP / PSI /) including a subscriber concentrator, a broadcast video and audio signal, data broadcasting data, and a program recommendation service menu through a router supporting a multicast routing protocol. SI information) can be transmitted to IP set-top boxes of multiple subscribers by multicasting.

The baseband system 2100 receives a Moving Picture Experts Group 2 (MPEG2) broadcast signal from an external program provider (PP), or an analog broadcast signal from terrestrial waves, and receives the received source broadcast signal from a serial digital interface (SDI). Converts to signals, synchronizes frames, distributes broadcast video and audio signals from multiple broadcast channels (e.g. 100 channels) via routine switcher, subtitle generator (CG) and automatic programming An automatic program controller (APC) may insert (at least one of an advertisement, a logo, or a subtitle) into the broadcast video and audio signal (signal editing and processing) and transmit the same to the compression multiplexing system 2200.

The SDI (Serial Digital Interface) signal is, for example, a digital signal standard having a transmission rate of 270 Mbps, and a composite digital video and four channels of digital audio signals may be mixed.

The baseband system 2100 basically converts and corrects a source signal received at a receiving device and a receiving device receiving a broadcast signal such as a program provider (PP), a terrestrial wave, etc. into an SDI signal, and synchronizes frames. Frame Synchronizer, Signal Splitter such as A / V Router that connects / concentrates all broadcasting signal channels for operation management, and Subtitles that edit and process signals by inserting advertisements, logos and subtitles into the SDI signals. It may include a character generator.

The compression multiplexing system 2200 uses an A / V encoder (A / V Encoder) for broadcasting video and audio signals (Video, Audio) received from the baseband system 2100 for each broadcasting channel (eg, 100 channels). ) To compress the SDI (Serial Digital Interface) video signal to H.264, and to compress the audio signal to MPEG-2 AAC to generate MPEG-2 TS (Transport Stream), and to compress compressed broadcast video and audio -2 after multiplexing data broadcasting data and EPG information (PSIP / PSI / SI information) generated by a data encoder and a PSI / SI generator together with the TS signal When the received MPEG-2 TS signal is used in the reception restriction technique, the TS-2 may be inputted to a scrambler, encrypted, and finally IP packetized to transmit an IP packetized TS (Transport Stream) broadcast signal.

Also, optionally, the reception restriction system 2300 may be used to prevent illegal viewing and illegal copying of program recommended content.

The reception restriction system 2300 performs encryption of the real-time channel and pre-encryption of the VOD content, and controls viewing authority so that only the authenticated user can use the channel and the content. In order to prevent illegal copying of IPTV content, a digital rights management (DRM) scheme may be used instead of the reception restriction system 2300.

The monitoring system 2400 is a control system. The monitoring system 2400 may monitor a transmission failure of the A / V broadcast signal for IPTV broadcasting, a reception failure by monitoring the downlink of the IPTV broadcasting system 2000, and confirmation of a subtitle.

The media management system 2500 is a system for managing various business process information (program organization information, location information, contract information, product information, etc.) for operating a broadcasting business. The media management system 2500 may integrately manage information flow through organic coupling with each system in the center of the broadcasting center.

The media management system 2500 manages broadcast program organization information, content and media management information, contract information of a program provider (PP) and a content provider (CP), and product information, and manages each system in the center of a broadcasting center. Through organic integration, it can act as a coordinator to manage and manage the flow of information.

In addition, the media management system 2500 may include contract management, media and content metadata management, EPG information acquisition / management as broadcasting schedule information, and real-time broadcasting and VOD in terms of operation. It provides channel organization management, agent management for interworking with each subsystem, VOD catalog creation management, and various product management.In terms of analysis, marketing analysis reporting, delivery such as settlement of CP / CA, subscriber viewing tendency, etc. ), Broadcast transmission monitoring, video server transmission management and VOD subscriber authentication, transmission result recording / management for settlement with CP / CA, and data synchronization with each sub-system connected.

The EPG system 2600 includes an EPG server and provides an electronic program guide (EPG) service to the user terminal 4000.

The VOD service providing system 2700 provides a VOD content by connecting a VOD session with the user terminal 4000 at the request of the user terminal 4000. The VOD service providing system 2700 may include a VOD content DB (not shown) in which data of VOD content is stored. In some cases, a plurality of content supply servers may be built below the VOD service providing system 2700. VOD content may be stored in each content supply server. According to this configuration, the VOD service providing system 2700 may collectively manage each content supply server and a list of contents stored therein.

The real-time channel broadcasting providing system 2800 provides a real-time over-the-air broadcasting service at the request of the user terminal 4000.

The session control system 2900 may provide the VOD service providing system 2700 and the user terminal based on the type of service provided to the user terminal 4000, the type of service requested by the user terminal 4000, and a connection state of the session. 4000, or controls the connection between the real-time channel broadcast providing system 2800 and the user terminal 4000. For example, when the session control system 2900 receives a request for the real-time channel broadcasting service from the user terminal 4000 where the VOD service is provided, the session control system 2900 does not immediately terminate the connected VOD session for a predetermined time. While maintaining it, it controls so that a real-time channel broadcasting service can be provided. At this time, the session control system 2900 may record the identifier of the VOD which was transmitting data and the reproduction time at the hold time of the VOD session.

Furthermore, when the VOD service provision request is re-received from the user terminal 4000 within a predetermined time, the session control system 2900 uses the held VOD session to resume the VOD contents from the recorded playback time. Can be provided.

At this time, the re-request of the VOD service may be made through a separately allocated control signal. Accordingly, the user can easily request a subsequent viewing of the VOD content played just before watching a real-time channel broadcast by manipulating a hot key installed in the remote controller.

The detailed configuration of the session control system 2900 will be described later.

The network 3000 receives broadcast content from the IPTV broadcasting system 2000 and delivers the received broadcast content to the user terminal 4000. The network 3000 includes a backbone network and an access network, and the access network includes Ethernet, xDSL (ADSL, VDSL), hybrid fiber coaxial ca (HFC), and fiber to the curb (FTTC). ), And may be configured in any one topology of a fiber to the home (FTTH) structure.

The user terminal 4000 is an apparatus for using an Internet broadcasting service, and generally includes an IPTV, a set top box (STB), and a remote controller. The user terminal 4000 outputs the broadcast content received from the IPTV broadcasting system 2000 and transmits the user response signal received through the remote controller to the IPTV broadcasting system 2000 through the return channel of the set-top box. The user terminal 4000 may use any one of a TV in which the IP STB is embedded or an IP set top box (IP STB), a computer, a notebook computer, or a personal portable terminal connected to the user's TV.

The user terminal 4000 provides the IPTV broadcasting system 2000 with the profile information, the VOD service request, the real time channel broadcasting request, etc. of the user terminal 4000, and receives the VOD content or the real time channel broadcasting from the IPTV broadcasting system 2000. It serves to provide the user.

For example, the user terminal 4000 transmits a VOD service request or a real time channel broadcast request to the session control system 2900, and establishes a session connection with the VOD service providing system 2700 or the real time channel broadcast providing system 2800. Through VOD service or real-time channel broadcasting service can be provided.

As described above, according to an IPTV service system according to an exemplary embodiment of the present invention, when a user uses a VOD service and uses a real-time channel broadcasting service, the first connected VOD session is not terminated. If the user wants to watch the VOD content that the user watched immediately before watching the real-time channel broadcast within the time of, the VOD service is provided using the first connected VOD session, and thus the user must find the category and the content that he / she wants to see again. Discomfort can be reduced.

Hereinafter, a detailed configuration of the session control system 2900 according to an embodiment of the present invention will be described with reference to FIG. 2.

2 is a detailed block diagram of the session control system 2900 according to an embodiment of the present invention.

As shown in FIG. 2, the session control system 2900 according to an embodiment of the present invention uses a user terminal connection unit 2910, a session connection control unit 2920, a session connection request unit 2930, and a database 2940. Include.

The user terminal connection unit 2910 may receive a request for a VOD service or a real time channel broadcasting service for each user terminal 4000. For example, the user terminal connection unit 2910 identifies the user terminal 4000 by using a unique ID assigned to the user terminal 4000, and receives a VOD service request or a real-time channel broadcast service request received from the user terminal 4000. To the session connection control unit 2920.

In addition, the user terminal connection unit 2910 receives a VOD service request or a real-time channel broadcast service request from the user terminal 4000, and when the VOD service or the real-time channel broadcast service is connected, the connection start time of the VOD service or the real-time channel broadcast service. Can be recorded in the database 2940.

In addition, when the user terminal connection unit 2910 receives a real-time channel broadcast service request from the user terminal 4000 which has been provided with the VOD service, the user terminal connection unit 2910 may record a time when the VOD session starts to be held in the database 2940. Can be.

In addition, the user terminal connection unit 2910 may record the identifier of the VOD content that was being transmitted and the play time at the hold time of the VOD session.

The session connection control unit 2920 may control the VOD service connection and the real-time channel broadcast connection based on the type of service currently provided to the user terminal 4000, the type of service requested by the user terminal 4000, and the connection state of the session. Can be.

For example, when the session connection control unit 2920 receives a real-time channel broadcast service request from the user terminal 4000 which has been provided with the VOD service, the VOD service providing system 2700 and the user terminal (2700) to provide a VOD service. It is possible to hold a VOD session connected between 4000s without terminating it. At this time, switching to the real-time channel broadcasting service while providing the VOD service may be activated by a channel number signal or a channel up-down signal.

In addition, the session connection control unit 2920 is provided with the VOD service and the user terminal 4000 and the VOD service providing system 2700 based on the session connection state of the user terminal 4000 which is receiving the real-time channel broadcasting service. You can control the session connection. For example, the session connection control unit 2920 refers to the database 2940, and the time when the VOD session that is held to provide the real-time channel broadcasting service is held, that is, the VOD session is held ( It may be determined whether the time for which the hold state is held exceeds a preset time, and the VOD session may be controlled based on the determination result.

For example, as a result of the determination, the session connection control unit 2920 may hold the VOD session shorter than the preset time when the time at which the VOD session is held does not exceed a preset time. If there is, the VOD session between the user terminal 4000 held and the VOD service providing system 2700 may be resumed. That is, the session connection control unit 2920 may resume the held VOD session when receiving a request for resuming the VOD service from the user terminal 4000 within a preset time after the VOD session is held. have. Accordingly, the VOD service providing system 2700 may provide the VOD service to the user terminal 4000 through the held VOD session by referring to the identifier of the VOD content that the user was watching and the playing time at the hold time of the VOD session. Can be. Therefore, the user can watch from the playback scene immediately before using the real-time channel broadcast, without having to search for the VOD content that was watched immediately before using the real-time channel broadcast.

In this case, since the request for resuming the VOD service may be made through a separately allocated control signal, the user may easily request for resuming the VOD service by operating a hot key installed in the remote controller.

In addition, the session connection control unit 2920 may hold the user terminal 4000 and the VOD service providing system 2700 that are held when the time when the VOD session is held exceeds a preset time. You can terminate the VOD session with). Therefore, the session connection control unit 2920 initially requests a VOD service request from a user terminal 4000 that uses a VOD service but uses a real-time channel broadcasting service for more than a preset time after the VOD session is held. In the case of receiving again, a new VOD session may be established between the VOD service providing system 2700 and the user terminal 4000. Therefore, the user must search for and watch the VOD content to be viewed again from the upper category to which the content belongs.

The session connection request unit 2930 receives a command regarding the connection of the VOD service or the connection of the real-time channel broadcasting service from the session connection control unit 2920 to the VOD service providing system 2700 and the real-time channel broadcasting providing system 2800. Can be.

However, the session control system 2900 according to an embodiment of the present invention transmits a command regarding the connection of the VOD service and the connection of the real-time channel broadcasting service to the VOD service providing system 2700 and the real-time channel broadcasting providing system 2800. Although the session connection request unit 2930 is included, the session connection request unit 2930 can be omitted, and the session connection control unit 2920 directly provides a VOD service command for controlling a VOD session and a real-time channel broadcast session. It may be delivered to the providing system 2700 and the real-time channel broadcasting providing system 2800.

The database 2940 may store information about a type of a service currently being used for each user terminal 4000, a connection start time of a VOD service or a real-time channel broadcasting service, and a time at which a VOD session starts to be held.

In this specification, although the user terminal connector 2910 records the connection start time of the VOD service or the real-time channel broadcasting service and the time at which the VOD session is held in the database 2940, the user terminal ( It takes little time for the request of the VOD service or the real-time channel broadcast service from 4000) and the corresponding session to be connected, and also the time until the VOD session is held and the real-time channel broadcast session is connected. Since it takes almost no time, the session connection control unit 2920 or the session connection request unit 2930 records the connection start time of the VOD service or the real-time channel broadcasting service and the time at which the VOD session starts to be held in the database 2940. You may.

3 is a diagram illustrating a session connection information table stored in a database according to an embodiment of the present invention.

As shown in FIG. 3, the session connection information table according to an embodiment of the present invention includes a user terminal field 31, a service name field 32, a VOD session connection time field 33, and a real time channel broadcast session connection time. Field 34, VOD session hold time field 35, and VOD session connection field 36.

The user terminal field 31 may include information for identifying the user terminal 4000. For example, a name of a user registered in each user terminal 4000 or a unique ID assigned to each user terminal 4000 may be displayed.

The service name field 32 may display the type of service currently provided to each user terminal 4000.

The start time information of the VOD service most recently used by the user terminal 4000 may be recorded in the VOD session connection time field 33. For example, even if the user terminal 1 currently uses the real-time channel broadcasting service, if the user terminal 1 used the VOD service at 8:10:30 am before using the real-time channel broadcasting service, the user terminal 1 enters the VOD session connection time field 33. The time can be recorded. However, when the real-time channel broadcasting service is used from the beginning as in the user terminal 4, no information may be recorded in the VOD session connection time field 33.

In the real time channel broadcast session connection time field 34, start time information of a real time channel broadcast service used most recently by the user terminal 4000 may be recorded. For example, if user terminal 1 started watching a real time channel broadcast at 8:45:20 am, the time may be recorded in the real time channel broadcast session connection time field 34. In addition, even if the user terminal 3 is currently using the VOD service, if the real-time channel broadcasting service was used at 8:50:30 am before using the VOD service, the time in the real-time channel broadcasting session connection time field 34 is displayed. This can be recorded. However, when the VOD service is used from the beginning, no information may be recorded in the real time channel broadcast session connection time field 34.

In the VOD session hold time field 35, a VOD session connected between the user terminal 4000 and the VOD service providing system 2700 is held while using the real-time channel broadcasting service while using the VOD service. The time can be recorded. For example, when the user terminal 1 uses the VOD service from 8:10:30 am and starts using the real-time channel broadcasting service at 8:45:20 am, the user terminal 1 and the VOD service providing system 2700 The connected VOD session is held, and the time information can be recorded in the VOD session hold time field 35. At this time, the time when the real-time channel broadcast session is connected and the time when the VOD session is held may be the same.

The VOD session connection field 36 may record whether a current VOD session is connected between the user terminal 4000 and the VOD service providing system 2700. For example, the VOD session is held based on the time recorded in the VOD session hold time field 35 with respect to the user terminal 4000 using the VOD service and using the real-time channel broadcasting service. As a result of determining whether the time exceeds the preset time, if the time at which the VOD session is held exceeds the preset time, the held VOD session is terminated and the VOD session connection field (36). ) May indicate an end.

In addition, as a result of the determination, when the time at which the VOD session is held does not exceed the preset time, the maintenance may be displayed in the session connection field 36. For example, if the user terminal 2 uses the VOD service from 9:15:20 AM and starts using the real-time channel broadcasting service at 9:23:20 AM, the VOD session starts from 9:23:20 AM. A hold may be indicated in the session connection field 36 until it is held and before a predetermined time elapses, for example, about 30 minutes.

However, for the user terminal 4000 currently using the VOD service, the maintenance is displayed in the session connection field 36, and for the user terminal 4000 using the real-time channel broadcasting service from the beginning, the session connection field 36 is displayed. ) Can be indicated by an end.

Although FIG. 3 illustrates that time information is displayed in seconds, the present invention is not limited thereto and may be displayed in units of days, hours, and minutes.

4 is a signal flow diagram of a method for providing a video on demand (VOD) service and a real time channel broadcast service according to an embodiment of the present invention.

The user terminal 4000 may make a VOD service request to the session control system 2900 (S400). After receiving the VOD service request from the user terminal 4000, the session control system 2900 may make a VOD session connection request to the VOD service providing system 2700 (S402). That is, in step S402, the session control system 2900 sends a VOD session connection command to the VOD service providing system 2700 to cause the VOD service providing system 2700 to connect a VOD session with the user terminal 4000. I can deliver it.

After receiving the VOD session connection command from the session control system 2900, the VOD service providing system 2700 may connect a VOD session with the user terminal 4000 requesting the VOD service (S404).

The user terminal 4000 using the VOD service using the connected VOD session in step S404 may request a real time channel broadcast service from the session control system 2900 (S406). For example, switching to real-time channel broadcasting during transmission of VOD data may be activated by a channel number signal or a channel up-down signal.

When the real-time channel broadcast service is requested from the user terminal 4000 using the VOD service, the session control system 2900 may hold the connected VOD session in step S404 (S408). That is, even if the session control system 2900 receives the real-time channel broadcast service request from the user terminal 4000 in step S408, the VOD session is maintained for a predetermined time without immediately terminating the VOD session that is already connected. The VOD session hold command may be delivered to the service providing system 2700.

The session control system 2900, which has made a VOD session hold request, may record time information of holding the VOD session (S410). In addition, in operation S410, the session control system 2900 may record an identifier of a VOD that is being transmitted data and a reproduction time of a hold time.

The session control system 2900 receiving the real-time channel broadcast service request from the user terminal 4000 may make a real-time channel broadcast session connection request to the real-time channel broadcast providing system 2800 (S412). That is, in operation S412, the session control system 2900 may provide a real-time channel broadcast session connection command to the real-time channel broadcast providing system 2800 to provide a real-time channel broadcast service to the user terminal 4000. 2800).

The real-time channel broadcast providing system 2800 receiving the real-time channel broadcast session connection command from the session control system 2900 may provide a real-time channel broadcast service to the user terminal 4000 requesting the real-time channel broadcast service (S414).

The user terminal 4000 watching the real time channel broadcast may request the session control system 2900 for the VOD service for the VOD content that was immediately viewed before the real time channel broadcast (S416).

In step S416, since the request for resuming the VOD service may be made through a separately allocated control signal, the user may easily request for resumption of the VOD service by operating a hot key installed in the remote controller.

The session control system 2900 may determine whether a VOD session is maintained between the user terminal 4000 requesting the VOD service again and the VOD service providing system 2700 in step S416 (S418). For example, in step S418, the session control system 2900 refers to time information on which the VOD session is held in step S410, and thus, the time at which the VOD session is held is preset. It may be determined whether the time is exceeded. That is, in step S418, the session control system 2900 may determine whether there is a request for resuming the video on demand service from the user terminal 4000 within a preset time.

The session control system 2900 may provide or hold a VOD session resumption request to the VOD service providing system 2700 to resume the held VOD session based on the determination result at step S418. The VOD session may be terminated and the connection request of the new VOD session may be transmitted to the VOD service providing system 2700 (S420).

For example, in step S420, the session control system 2900 determines in step S418 that the time at which the VOD session is held does not exceed a preset time, that is, the VOD session is held. If there is a request for resuming the VOD service from the user terminal 4000 within a preset time after the hold, the VOD session resume command for causing the VOD service providing system 2700 to resume the held VOD session. To the VOD service providing system 2700. Therefore, the user can watch from the playback scene immediately before using the real-time channel broadcast, without having to search for the VOD content that was watched immediately before using the real-time channel broadcast.

In addition, for example, as a result of the determination in step S418, if there is a request for resuming the VOD service from the user terminal 4000 after a preset time elapses after the VOD session is held, in step S420 The session control system 2900 terminates the held VOD session and issues a VOD session connection command to establish a new VOD session between the VOD service providing system 2700 and the user terminal 4000. ) Can be delivered. Therefore, the user must search for and watch the VOD content to watch again.

The VOD service providing system 2700 which receives the VOD session resume command or the new VOD session connection command from the session control system 2900 connects the VOD session with the user terminal 4000 which re-requested the VOD service, Follow-up may be provided (S422).

One embodiment of the present invention can also be implemented in the form of a recording medium containing instructions executable by a computer, such as a program module executed by the computer. Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. In addition, computer readable media may include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Communication media typically includes computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave, or other transmission mechanism, and includes any information delivery media.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

1 is a detailed configuration diagram of an Internet Protocol Television (IPTV) service system for providing a video on demand (VOD) service and a real-time channel broadcasting service according to an embodiment of the present invention.

2 is a detailed block diagram of a session control system according to an embodiment of the present invention.

3 illustrates a session connection information table stored in a database according to an embodiment of the present invention.

4 is a signal flow diagram of a method for providing a video on demand (VOD) service and a real-time channel broadcast service according to an embodiment of the present invention.

Claims (8)

In the system for providing a video on demand (VOD) service and a real-time channel broadcasting service, VOD service providing unit for providing the video on demand (VOD) service, A real-time channel broadcast provider for providing the real-time channel broadcast service; When switching to real-time channel broadcasting during VOD data transmission, the VOD session is maintained for a predetermined time, and when a request for resuming transmission of the VOD data is received within the predetermined time, resume watching of the VOD through the maintained session. Providing session control On-demand video (VOD) service and real-time channel broadcast service providing system comprising a. The method of claim 1, And the transmission resume request is transmitted by a separately assigned control signal. The method of claim 1, And the session controller records the identifier of the VOD that was being transmitted and the playback time at the hold time. The method of claim 1, And switching to the real-time channel broadcast during the VOD data transmission is activated by a channel number signal or a channel up-down signal. In the method for providing a video on demand (VOD) service and a real-time channel broadcasting service, (a) receiving a switch request of a real-time channel broadcasting service from a user terminal provided with a video on demand service; (b) maintaining the VOD session for a predetermined time, (c) determining whether there is a request for resuming the video on demand service within the predetermined time; (d) if a request for resuming the on-demand video (VOD) service is received within the predetermined time, providing a replay of a VOD through the maintained session. Video-on-demand (VOD) service and a real-time channel broadcast service providing method comprising a. The method of claim 5, The on-demand video (VOD) service resume request is sent by a separately assigned control signal on demand video (VOD) service and real-time channel broadcast service providing method. The method of claim 5, After the step (b), (e) recording the identifier of the VOD during data transmission and the reproduction time at the hold time. Video-on-demand (VOD) service and real-time channel broadcast service providing method further comprising. The method of claim 5, Switching to the real-time channel broadcasting service during the provision of the video on-demand (VOD) service is activated by a channel number signal or a channel up-down signal.

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