KR20090100947A - Method and apparatus for transmitting broadcasting data in iptv environment, iptv receiver, and method for processing broadcasting data downloaded in the iptv receiver - Google Patents

Abstract

PURPOSE: A method and an apparatus for transmitting broadcasting data in an IPTV environment, an IPTV receiver, and a method for processing broadcasting data downloaded in the IPTV receiver are provided to improve buffering speed of broadcasting data which are downloaded. CONSTITUTION: A method for transmitting broadcasting data in an IPTV environment comprises the following steps. Broadcasting data is requested in the first server(S301). In the first server, the requested broadcast data are divided into a plurality of part data. Each divided part data is assigned to the second servers(S302). Corresponding part data assigned to each second server are simultaneously transmitted(S303).

Description

Method and apparatus for transmitting broadcast data in an IPTV environment, and method for downloading and processing broadcast data from an IP receiver and the IP receiver {Method and apparatus for transmitting broadcasting data in IPTV environment, IPTV receiver, and method for processing broadcasting data downloaded in the IPTV receiver}

The present invention relates to a method and apparatus for transmitting broadcast data in an IP environment, and to a method for downloading and processing broadcast data from an IP receiver and the IP receiver, and more particularly, to divide, transmit, download and process broadcast data. It's about things.

Conventional television (TV) transmits contents produced by broadcasting companies through radio wave transmission media such as terrestrial wave, cable, and satellite broadcasting, and viewers watch through a TV receiver capable of receiving each media. Has been serviced.

However, as digital-based digital TV technology has been developed and commercialized in existing analog broadcasting, various contents such as real-time broadcasting, contents on demand (GOD), games, and news can be obtained by using the Internet network in each household in addition to the existing radio media. Various companies are starting to provide IPTV broadcasting to viewers.

The services of IPTV can be largely classified into a real-time broadcast (Live Media Broadcast / Linear Broadcast TV) and the content (Contents on Demand) by the user's request. The services of IPTV can be classified into two types. The biggest feature is that IPTV service can provide users with much more diverse contents than existing analog and digital TV services.

In the conventional receiver, it is common to receive and process a broadcast signal unilaterally transmitted by a broadcast station. Nowadays, however, there are many mediums capable of two-way communication, and some of them have been built in the home. A medium capable of bidirectional communication is, for example, an Internet protocol in each home.

The era of requesting, receiving and enjoying a desired program through two-way communication with a sender connected through a network using the Internet protocol is coming. An example of this is IPTV, which is emerging.

IPTV receivers can receive broadcasts and transmit data in both directions through a network connected through the Internet protocol, and there is little time and place restriction, so the future development is endless.

Conventionally, the transmitting side sequentially transmits broadcast data, and the receiving side sequentially downloads and reproduces the sequentially transmitted broadcast data. However, in the case of sequentially transmitting and receiving broadcast data as described above, the user generally does not play the back part earlier than the front part unless the user downloads the entire broadcast data.

Accordingly, an object of the present invention is to provide a method and apparatus for dividing and transmitting broadcast data in an IPTV environment.

Another object of the present invention is to provide a method and an apparatus capable of processing broadcast data divided and transmitted as described above.

One example of a method of transmitting broadcast data in an IPTV environment according to the present invention includes: receiving the broadcast data from a first server; Dividing all of the requested broadcast data into a plurality of part data in the first server, and allocating second servers to transmit each of the divided part data; And simultaneously transmitting the corresponding part data allocated by each second server.

In this case, the number of each part may be equal to or less than the number of the second servers.

Each of the part data may allow intra data to be positioned at the head of the corresponding part.

In addition, the intra data may include an I-picture.

In addition, the broadcast data may be divided into parts by a time unit by using a time stamp.

In addition, each part data may include identifier information for identifying a corresponding part.

Each part data may further include information regarding a start time or a start position of a corresponding part in the broadcast data.

An example of a system for transmitting broadcast data in an IPTV environment according to the present invention includes receiving the broadcast data, dividing the entire broadcast data into a plurality of parts, and transmitting each of the divided parts data. A first server assigning second servers; And a plurality of second servers simultaneously transmitting the allocated corresponding part data.

In this case, the first server may divide the broadcast data by the number of the second servers or less.

The first server may allow intra data to be located at the head of each part data.

The first server may use an I-picture as the intra data.

The first server may divide each part data into time units by using a time stamp in dividing each part data.

In addition, the first server may include identifier information for identifying corresponding part data in the respective part data.

The first server may further include information regarding a start time or a start position of the corresponding part data in the broadcast data.

According to the present invention, an example of a method for downloading and processing broadcast data in an IPTV receiver includes: requesting the broadcast data; Downloading the requested broadcast data, wherein the downloaded broadcast data is divided into a plurality of pieces of data at a transmitting side and simultaneously transmitted through different paths; And buffering each part data of the downloaded broadcast data at the same time.

In this case, the download may be performed through different ports corresponding to each part data transmitted through the different paths.

The method may further include assigning a server to transmit each part data of the requested broadcast data.

In addition, the buffering may use intra data included in each part data.

The intra data may include an I-picture.

In addition, the buffering may use information about a start time or a start position of the corresponding part data in the broadcast data.

One example of an IPTV receiver for downloading and processing broadcast data from the transmission system according to the present invention includes a network interface connecting to a network; The storage unit downloads the information on the second server is divided and allocated broadcast data from the first server through the connected network, and using the downloaded information to download and store the respective part data from each server. ; A user input receiver configured to receive information related to reproduction of each part data of the UI configured in connection with reproduction of the downloaded broadcast data; A decoding unit for decoding each part data of the downloaded broadcast data; A controller configured to configure a specific UI in relation to the reproduction of the downloaded broadcast data, and to control a corresponding part of the broadcast data to be decoded according to the information related to the reproduction of each input part data; And an output unit configured to output the decoded part data under the control of the controller.

In this case, the controller may control to download through different ports corresponding to each part data transmitted through different paths.

The controller may control to decode data using intra data included in each part data.

The controller may control to decode by using information about a start time or a start position of a corresponding part included in each part data.

According to the invention,

First, there is an effect that can improve the buffering speed of the downloaded broadcast data.

Second, even if the entire broadcast data is not downloaded according to the user's request, it is possible to reproduce the desired portion of the broadcast data more quickly.

Third, there is an effect for the convenience of the user.

Hereinafter, a method and apparatus for transmitting broadcast data in an IPTV environment and a method for downloading and processing broadcast data from an IPTV receiver and the IPTV receiver according to the present invention for achieving the above object are attached. It will be described in detail with reference to.

In this case, the terminology used in the present invention is a general term that is currently widely used as possible, but in some cases, the term is arbitrarily selected by the applicant, and in this case, since the meaning is described in detail in the description of the present invention, the term is simply a term. It is to be understood that the present invention is to be understood as meanings of terms other than names.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily practice the present disclosure.

First, in connection with the present invention, the IPTV environment will be described. 1 is a conceptual diagram illustrating an IPTV environment in relation to the present invention.

1 is a conceptual diagram illustrating an IPTV environment in relation to the present invention. IPTV can watch broadcast programs over the Internet such as terrestrial, satellite or cable broadcasts, and offers additional services such as movies, music, e-commerce and personal computers. ) Is to make e-mail and other services available on TV as if using the Internet.

The IPTV environment or the overall system may be divided into a program provider 10, a service provider 20, and a customer or consumer 30. In this case, the program provider 10 may also be referred to as a platform provider.

The program provider 10 refers to one large group that provides all the overall services and data for the broadcast program. The service provider 20 maintains, maintains, and manages a transmission network to transmit multimedia data to the customer or to provide a stable reception environment of the customer, and the infrastructure for network transmission to the program provider 10. And provide functionality. The customer 30 plays a role of playing the received data using an infrastructure such as x digital subscriber line (xDSL) or cable, immediately responding to the user's request. The customer 30 is mostly composed of companies that produce IPTV, IPTV, IP STB (IP settop box), IP Phone and the like can be. In the case of IP Phones, if there is an IPTV, a phone service can also be provided.

As described above, each group performing different roles will be described in more detail.

First, the program provider 10 may include, for example, a TV station, a radio station, a video on demand (VoD) / audio on demand (AoD) service, a music on demand (MoD) service, and a PF. There may be a server, an electronic program guide (EPG) server, an electronic content guide (ECG) server, a portal server, and the like. Looking at each of the following, as follows.

A TV station is a place for making a broadcast program, and includes a conventional terrestrial broadcaster or a cable broadcaster, and can create and store a program that users can watch and convert it into digital to transmit in various broadcast forms. Radio stations generally operate without video channels, although there may be video channels.

VoD / AoD service is different from the TV station and the radio station. The program provider will store and store the program to be broadcast, but it has the feature that it cannot be rewound or stopped until it is recorded as a live broadcast with continuity. However, in the case of VoD or AoD, a user can save a broadcast program, a movie, and music that he / she wants to play first, and then play and watch it. For example, if there is a broadcast program that the user does not watch properly due to lack of time, the user may access a site providing the corresponding broadcast service and download or immediately play a file. AoD also offers the ability to record audio programs in real time or make it difficult to record audio programs.

MoD service can download and listen to the music I want. MoD is similar to AoD, but the service can be used by record labels or record distributors by extending existing web services.

The PF server may be serviced by a company that manages all broadcasting information and location information provided by the program provider 10 instead. The PF server mainly services broadcasting time or position information necessary for broadcasting and information that a user can access.

Therefore, the service of the PF server must be provided in the IPTV environment, and each broadcasting station must have a PF server. If each broadcasting station does not have a PF server in the IPTV environment, the user may not be able to access the broadcasting station. In addition, the customer 30 should be able to process and display the information received through the service provided by the PF server on the screen.

The service provided by the EPG server is a service that allows the user to look up a broadcast program by time zone or to find out by channel. The service that is frequently used in the form of a TV guide company is frequently used, but the EPG server is a program. This can be automatically installed and executed in the customer 30.

The customer 30 may receive the service provided by the PF server and obtain only information on the corresponding broadcast station. However, the customer 30 may receive the service provided by the EPG server to obtain information on the real time broadcast channels of all broadcasting stations at once. For example, the customer 30 may receive an EPG service provided by the EPG server to reserve and record CNN news or to watch a Disney broadcast. Therefore, the EPG server must provide the information of the broadcasting program of the region in detail for each time zone.

In particular, the EPG service, for example, in the case of a drama, can search for the contents of a drama or distinguish whether a category of the drama is science fiction, drama, animation, etc. They can also provide detailed information about the plot or characters of a movie or drama.

In addition, the customer 30 can easily access the EPG service using the EPG key provided in the remote controller.

The ECG service provided by the ECG server allows a user to conveniently use the information of the content provided by the program provider 10, the location and access authority of the access server, and the like. In this case, the ECG service may provide a function for easily accessing servers with content and information of the content. In other words, the ECG service is not a real-time broadcast, but services such as VoD / AoD and MoD are similarly grouped together like EPG, thereby relieving the user from the individual access to download or view content through a certain content service.

Unlike the EPG service, the ECG service does not inform the real-time broadcasting channel information but provides information on the broadcasting channel information already stored in the server so that the user can always watch, download and store the information.

For example, a user must access a very difficult address or PF servers to get information about the server where each content is located, but this requires a lot of time and effort. However, when a user simply applies for an ECG service using an ECG button provided on a remote controller, the user automatically checks the information collected and provided for all contents through an automatically installed ECG program and accesses only the desired server to obtain the corresponding data. The user's convenience can be pursued.

The service provided by the portal server is a web service provided by each broadcasting station, and may provide information for connecting to a web server of a company that serves a broadcasting station or content. The portal server can search for a program list provided by program providers providing respective broadcasting stations or content services, and provide functions such as ECG and EPG.

However, the portal service also has functions such as user authentication and license agreement, so I need to connect to watch the program I want. In addition, the ECG or EPG service provides an integrated broadcast or content list, but the portal service may provide detailed search by providing broadcast or content list information for the corresponding program provider. The user can simply access the portal service through a remote control or the like.

The above descriptions refer to services that can be provided by the program provider 10, and each broadcasting station or server must be connected to the Internet so as to transmit a program or broadcast information in real time.

In addition, each broadcasting station or server provides a service using an Internet (real-time) protocol such as real-time transport protocol (RTP), real-time streaming protocol (RTSP), resource reservation protocol (RSVP), or multi protocol label switching (MPLS). It is necessary to have a system that can be connected to the network of the provider 20 to transmit multimedia data without delay and error.

For example, in an IPTV environment, the program provider 10 may transmit a multimedia based on a moving picture experts group-2 (MPEG-2) and / or an audio coding-3 (AC-3) scheme in real time. After transcoding according to the IPTV environment, the service provider 20 provides the RTP / UDP (user datagram protocol) protocol with time information so that the caption or lipync can be fitted. The system can be configured to pass through an IP network.

The service provider 20 provides the stability and bandwidth of the network so that the multimedia data and / or broadcast data received from the program provider may be well transmitted through the above process. In this case, the service providers 20 may provide an IPTV service using an existing cable network. However, in this case, the service providers 20 must change the equipment of the delivery network. That is, the service providers 20 have network equipment capable of transmitting data in real time, but should consider the bandwidth of the customer 30.

In addition, the service providers 20 will have to reduce the bandwidth by processing a large amount of multimedia data using the above equipment and the multicast service, which is a basic network service of IPTV. However, the service providers 20 may transcode multimedia data and / or broadcast data received from the optical fiber network configuration or the program provider 10 again if MPEG-N or MPEG-7 is not obtained if sufficient bandwidth is not secured. It can also be transformed and transmitted in the same form.

In this case, the service provider 20 may include a network management system manager (NMS manager), a dynamic host control protocol (DHCP) server, and a content delivery network (CDN) server.

The NMS manager manages a transmission network that the service provider 20 can transmit to each customer and an IPTV broadcast receiver of the customer 30. For example, the service provider 20 may be aware that a problem occurs in the transmission network through the NMS manager, so that normal broadcast reception may not be made in the customer 30, and an emergency means for handling the problem should be provided. do.

The NMS manager described above is widely used as a standardized means for smoothly controlling and managing machines in a remote transport layer. That is, the service provider 20 may use the NMS manager to determine how much traffic is generated for a certain broadcast and in which region the bandwidth is insufficient.

In addition, the service provider 20 should provide the service of the NMS manager to the program provider 10 to create and manage a group in multicast. This is because the program provider 10 should also be able to create more multicast groups in certain cases.

The DHCP server automatically assigns IP to the customer's IPTV receiver and announces the address of the CDN server. The DHCP server is used as a means of allocating IP to a PC in a general network.

That is, the service provider 20 should transmit an address for accessing the IPTV broadcast receiver which is allowed to use through the DHCP server so that the user can register the first time. The service provider 20 may generally provide IPv4 (internet protocol version 4) to an IPTV broadcast receiver in an IPTV environment, but may also provide IPv6 (internet protocol version 6). Thus, an IPTV receiver providing IPv4 does not mean that it cannot be used.

The CDN server is to provide CDN information with IP when the IPTV broadcast receiver is powered on and operated for the first time. The CDN information includes the registration or authentication of a user of the IPTV broadcasting company and the above-described PF information. Therefore, if the IPTV broadcast receiver does not receive the CDN information from the service provider 20, broadcast reception is impossible.

The customer 30 includes various types of IPTV broadcast receivers. If the user has a regular TV, the IPTV STB can be rented to enjoy the IPTV broadcasting service at a low cost. In addition, the service provider 20 can pay an additional service fee at a low price and also apply for the IP Phone. have.

IPTV broadcast receivers basically have a network interface (network interface) to connect to the network, and can receive multimedia data on the screen by receiving data packets using the Internet Protocol (IP). In addition, the IPTV broadcast receiver should respond by receiving the corresponding information from the server by quickly transmitting the data packet through the network using an input device such as a remote controller. That is, the IPTV broadcast receiver must be able to transmit the user's requirements in both directions while processing the multimedia data.

In addition, an input device such as a remote controller should have a function button for IPTV broadcasting service so as to provide the interactive service as described above. Therefore, the user can store and view a wonderful scene appearing in a drama by using the external input device, and can use additional services such as location information and hotel reservation.

On the other hand, the NMS manager said to control and manage the transmission network and IPTV broadcast receiver, in the future in the IPTV environment, the scope of the broadcast service can be further expanded and additional services can be increased. Accordingly, as an example, when the IPTV broadcast receiver increases rapidly and additional services increase, the role of the NMS manager will be important.

In the following description, in describing the technical idea of the present invention, for convenience of explanation, a broadcast service by a user's request among IPTV services will be described as an example.

The present invention is basically not a method of sequentially transmitting and downloading specific broadcast data for the broadcast service, but by dividing the specific broadcast data into a specific number and simultaneously transmitting the data through a plurality of servers and corresponding to each server. To download it from each port and process it.

First, an operation on the transmission side of broadcast data will be described.

2 is a diagram illustrating an example of an IPTV transmission and reception system configured according to the present invention, and FIG. 3 is a flowchart illustrating an example of a method of transmitting broadcast data in an IPTV environment according to the present invention. . Here, in relation to the transmitting side, only parts related to the present invention are shown, and a detailed configuration and description of an IPTV set-top box (STB) as an example in relation to the receiving side will be described later.

2 and 3, basically, when the IPTV transmission system requests broadcast data requested by a user or the like (S301), a system for transmitting the requested broadcast data.

As shown in FIG. 2, the IPTV transmission system may basically include a data server assignment server 211 and broadcast data servers 212 to n. Hereinafter, in the present specification, part data refers to at least two pieces of data divided and divided from one broadcast data.

The data server assignment server 211 divides all of the requested broadcast data into a plurality of part data. The data server assignment server 211 allocates the divided part data to the broadcast data servers 212 to n, respectively (S302). Here, the data server allocation server 211 may divide the broadcast data in whole by using time stamps of transport streams or packets including the same.

In addition, the data server assignment server 211 may place intra data at the head of each part data in the division process so that decoding can be performed immediately at the receiving side. Here, the intra data may include, for example, an I-picture. In addition, the data server allocating server 211 may arbitrarily designate all of the broadcast data in order to distinguish a plurality of pieces of data, or consider the number of the broadcast data servers 212 to n, and divide the number into less than or equal to the number. .

In addition, the data server assignment server 211 may include identifier information for identifying each part data divided from broadcast data in the partitioning process. Alternatively, the corresponding part data may include information regarding a position or time starting from all broadcast data or information about a duration.

Each broadcast data server 212 to n transmits the corresponding broadcast data in the entire broadcast data allocated by the data server assignment server 211 to the IPTV STB 230 via the IP network 220 (S303). In this case, each part data may be transmitted simultaneously.

Therefore, according to the present invention, each part data transmitted may be transmitted through a different path or server.

Next, a description will be given of the receiving side for downloading the transmitted broadcast data.

Hereinafter, the IPTV receiver performing the above operation will be described. 4 is an example of a block diagram of an IPTV receiver configured according to the present invention.

The receiver includes a network interface 1201, an IP manager 1202, a conditional access system (CAS) / digital rights managment (DRM) unit 1203, and a service delivery manager. 1204, demultiplexer 1205, audio / video decoder 1206, display apparatus 1207, application controller 1208, channel manager (channel manager) 1209, service information decoder 1210, service discovery manager 1211, service control manager 1212, system manager 1213, a storage apparatus 1214, a storage medium controller 1215, and a storage medium 1216.

The network interface unit 1201 performs a function of connecting to a network network connected to each of the servers on the transmitting side in order to download the requested broadcast data or the respective part data obtained by dividing the broadcast data, and through the connected network network. A packet including broadcast data may be received or transmitted.

The IP manager 1202 may be involved in delivering the packet from a source to a destination for a packet received or a packet transmitted through the connected network. That is, the packet may be classified to correspond to an appropriate protocol.

The CAS / DRM unit 1203 is responsible for service reception restriction and digital rights management of downloaded broadcast data. That is, the CAS / DRM unit 1203 receives a packet received in connection with the service of the corresponding broadcast data from the network connected through the network interface unit 1201 through the IP manager 1202 so that the packet is restricted or digitally received. If there are restrictions in relation to copyright management, they can be resolved. That is, the CAS / DRM unit 1203 is responsible for controlling the packet through access or redistribution.

The service delivery manager 1204 is responsible for handling the downloaded broadcast data. In this case, RTP / RTCP may be used for an MPEG-2 transport stream. In other words, the MPEG-2 packets are encapsulated in RTP. Accordingly, the service delivery manager 1204 parses the RTP packets and transmits the MPEG-2 packet encapsulated as a result of the parsing to the demultiplexer 1205. Alternatively, the service delivery manager 1204 may transmit a feedback on the quality of network reception using RTCP. In this case, the MPEG-2 transport packets may be directly transmitted to UDP without RTP.

The demultiplexer 1205 demultiplexes audio, video, and service information from received transport stream packets. In this case, the demultiplexer 1205 demultiplexes the service information and demultiplexes the audio / video transport packets under the control of the channel manager 1209. In addition, the demultiplexer 1205 transmits the demultiplexed service information to the control information decoder 410.

The audio / video decoder 1206 receives and processes the demultiplexed audio / video packet from the demultiplexer 1205.

The output unit 1207 receives and outputs an audio / video signal processed by the audio / video decoder 1206.

The application control unit 1208 supports a graphical user interface (GUI) on the output unit 1207 for the user, and receives the user's input through an external input device such as a remote controller or a front panel to receive the user's input. If the input relates to channel selection, it is passed to the channel manager 1209. In addition, the application controller 1208 may control key states of the entire receiver system or store configuration data in the storage 1214.

The channel manager 1209 creates a channel map or controls the service discovery manager 1211. In addition, the channel manager 1209 requests or resets the service information decoder 1210 for channel information. The channel manager 1209 sets a corresponding PID (packet identifier) to the demultiplexer 1205 to receive the audio / video packet.

The service information decoder 1210 is a module for controlling the service information and performs a slave operation by the control of the channel manager 1209. The service information decoder 1210 sets the corresponding PID to the demultiplexer 1205 to demultiplex the service information. The service information decoder 1210 receives and processes each service information generated by the demultiplexer 1205 according to the setting. In addition, the service information decoder 1210 may receive service information from the service delivery manager 1204 and create a service information database for a broadcast service.

The service discovery manager 1211 finds and enables IPTV services through an IPTV network capable of bidirectional services. The service discovery manager 1211 provides all information for the selected service.

The service control manager 1212 is responsible for selecting and controlling services. For example, the service control manager 1212 selects a live broadcast service using IGMP (Internet group management protocol) or RTSP protocol, or selects VOD content using RTSP protocol. At this time, the RTSP protocol is used to control the transmission of television and audio which are directly transmitted or broadcast. In addition, the RTSP protocol is used for a continuous transmission control procedure (TCP) connection or to allow trick mode control for real-time broadcasting media strings.

The system manager 1213 controls a boot flow according to power on / off of the receiver system, and stores a read only memory image including a downloaded software image. Write or save).

The storage unit 1214 stores set-up data, etc. for the system. As the storage unit, a nonvolatile memory (NVRAM) or a flash memory may be used.

The storage medium 1216 temporarily stores a signal transmitted from the demultiplexer 1205 or the audio / video decoder 1206 and transmits the signal back to the demultiplexer 1205 or the audio / video decoder 1206. do. In this case, the storage medium 1216 writes data from the received signal under the control of the storage medium controller 1215, stores the signal, and provides the signal to the demultiplexer 1205.

In connection with the present invention, the application controller 1208 may receive a request for a desired broadcast data from a user or receive information regarding playback of a desired point of a user in connection with playing of the downloaded broadcast data. In addition, the application control unit 120 may control to configure a user interface (UI) in relation to a progress bar of the downloaded broadcast data. The service control manager 1212 controls each part data related to the broadcast data downloaded from the IP manager 1202 to be stored in the storage medium 1216 or in the broadcast data according to a user input received from the application controller 1208. The part data can be read and reproduced.

5 is an example of a flowchart illustrating an example of a method of downloading and processing broadcast data from an IPTV receiver according to the present invention.

First, a request for downloading desired broadcast data is received by a user or the like, and the corresponding broadcast data is requested to the transmitter in order to download the broadcast data (S501). At this time, the data server assignment server 211 of the transmitter is described above. As described above, the broadcast data is divided into a plurality of pieces of part data and allocated to each broadcast data server 212 to n.

The broadcast data servers for transmitting the respective part data of the requested broadcast data are allocated from the data server assignment server 211 (S502).

The corresponding part data is downloaded from each of the allocated broadcast data servers (S503). Here, the receiver may allocate and download ports corresponding to each broadcast data server.

Thereafter, each part data of the downloaded broadcast data is simultaneously buffered (S504). Here, the buffering may use intra data included in each part data. In this case, the intra data may include, for example, an I-picture. In addition, the buffering may use information about a start time or a start position of the corresponding part data in the broadcast data.

6 (a) to (b) illustrate an example of a user interface (UI) configured according to the present invention.

6 (a) shows a progress bar associated with the reproduction of existing broadcast data, and 6 (b) is an example of a progress bar constructed according to the present invention.

In the case of 6 (b), as an example of the UI configured by applying the present invention, the progress bar is configured by dividing the entire broadcast data into three and downloading the divided broadcast data into three part data. Here, in the above case, the entire broadcast data is divided into three part data, but the present invention is not limited thereto.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the embodiments, but should be defined by the claims.

1 is a diagram illustrating conceptually an IPTV environment in relation to the present invention.

2 illustrates an example of an IPTV transmission / reception system configured according to the present invention.

3 is a flowchart illustrating an example of a method for transmitting broadcast data in an IPTV environment according to the present invention.

4 is an example of a block diagram of an IPTV receiver configured according to the present invention.

5 is an example of a flowchart illustrating an example of a method of downloading and processing broadcast data from an IPTV receiver according to the present invention.

6 (a) to (b) shows an example of a user interface (UI) configured according to the present invention

* Explanation of symbols on the main parts of the drawing

1201; Network interface unit 1202; IP Manager

1203; CAS / DRM Part 1204; Service delivery manager

1205; Demultiplexer 1206; Audio / Video Decoder

1207; Display unit 1208; Application control

1209; Channel manager 1210; Service information decoder

1211; Service discovery manager 1212; Service control manager

1213; System manager 1214; Storage

1215; A storage medium controller 1216; Storage media

Claims (24)

In the method for transmitting broadcast data in an IPTV environment, Receiving the broadcast data from the first server; Dividing all of the requested broadcast data into a plurality of part data in the first server, and allocating second servers to transmit each of the divided part data; And And simultaneously transmitting the corresponding part data allocated by each of the second servers. The method of claim 1, The number of each part is characterized in that less than the number of the second server. The method of claim 1, Each of the part data is characterized in that intra data is positioned at the head of the corresponding part data. The method of claim 3, wherein And said intra data comprises an I-picture. The method of claim 1, The broadcast data is characterized by dividing each part by a time unit by using a time stamp. The method of claim 1, Wherein each part data includes identifier information for identifying corresponding part data. The method of claim 6, Wherein each part data further includes information about a start time or a start position of a corresponding part in the broadcast data. In a system for transmitting broadcast data in an IPTV environment, A first server receiving the broadcast data, dividing the entire requested broadcast data into a plurality of part data, and allocating second servers to transmit each of the divided part data; And And a plurality of second servers transmitting the allocated corresponding part data at the same time. The method of claim 8, And the first server divides the broadcast data into the number of the second servers or less. The method of claim 8, And wherein the first server places intra data at the head of each part data. The method of claim 10, And the first server uses an I-picture as the intra data. The method of claim 8, And the first server divides each part data into time units by using a time stamp in dividing each part data. The method of claim 8, And wherein the first server includes identifier information for identifying corresponding part data in the respective part data. The method of claim 13, And the first server further includes information about a start time or a start position of the corresponding part data in the broadcast data. In the method of downloading and processing broadcast data from the IPTV receiver, Requesting the broadcast data; Downloading the requested broadcast data, wherein the downloaded broadcast data is divided into a plurality of pieces of data at a transmitting side and simultaneously transmitted through different paths; And Buffering each part data of the downloaded broadcast data at the same time. The method of claim 15, The download is performed through different ports in correspondence with each part data transmitted through the different paths. The method of claim 15, And assigning a server to transmit each part data of the requested broadcast data. The method of claim 15, The buffering method is characterized in that using the intra data contained in the respective part data. The method of claim 18, And said intra data comprises an I-picture. The method of claim 15, The buffering method is characterized in that using the information on the start time or start position of the corresponding part data in the broadcast data. In the IPTV receiver for downloading and processing broadcast data from the transmission system of claim 8, A network interface connecting with the network; The storage unit downloads the information on the second server is divided and allocated broadcast data from the first server through the connected network, and using the downloaded information to download and store the respective part data from each server. ; A user input receiver configured to receive information related to reproduction of each part data configured in relation to reproduction of the downloaded broadcast data; A decoding unit for decoding each part data of the downloaded broadcast data; A controller configured to configure a specific UI in relation to the reproduction of the downloaded broadcast data, and to control a corresponding part of the broadcast data to be decoded according to the information related to the reproduction of each input part data; And And an output unit for outputting the decoded part data under the control of the controller. The method of claim 21, The control unit, IPTV receiver, characterized in that for controlling to download through different ports in response to each part data transmitted in different paths. The method of claim 21, The control unit, And controlling to decode by using intra data included in each part data. The method of claim 23, wherein The control unit, And controlling to decode by using information about a start time or a start position of a corresponding part included in each part data.

Images