KR20090060599A - Method and system for providing digital broadcasting service capable of reducing of channel surfing time - Google Patents

Abstract

A digital broadcasting service offer method capable of reducing a channel surfing time and a system thereof through the viewing pattern of a viewer are provided to allow a user to watch broadcasting channel in a program guide by allocating the same transport stream. A digital broadcasting service providing system provides a broadcast service to one or more broadcasting reception terminals through network. The digital broadcasting service providing system comprises an AV storage(300), an AV encoding unit(304), and a transport stream allocating unit. The AV storage stores the broadcasting program about each broadcast channel. The AV encoding unit sets up audio and video signal of the broadcasting program. The transport stream allocating unit is collected from the broadcasting reception terminal. One or more broadcast channels included in rating rank are assigned to the single transport stream.

Description

Method and System for Providing Digital Broadcasting Service Capable of Reducing of Channel Surfing Time

The present invention relates to a method and system for providing a digital broadcasting service capable of shortening channel surfing time, and more particularly, to a method and system for quickly providing a channel desired by a viewer in a digital broadcasting service.

In the past, broadcast services were provided in an analog manner, but research on digital broadcasting services is being actively conducted as users' demand for high definition broadcasting, interactive broadcasting, and various additional services increases.

Currently, digital broadcasting standards are evolving into two parts: the European Digital Video Broadcasting-Multimedia Home Platform (DVB-MHP) and the Advanced Television Systems Committee-Digital TV Application Software Environment (ATSC-DASE).

Recently, as the research on the digital broadcasting standard has been actively conducted, the broadcasting signal including video, audio, and data has been digitally compressed. Digital compression has made it possible to multi-channel TV broadcasting, and it is possible to provide a variety of programs due to the increase in transmission amount within each channel.

Depending on the development of the relevant application, not only the broadcast, but also the broadcast and direct, such as weather, news, securities, email, Electric Program Guide (EPG), TV shopping, banking, telephone service and internet search, There is provided a data broadcasting service which can provide indirectly related data (additional information).

Although it is possible to improve image quality and data broadcasting through digital compression, it is rather due to tuning of a transport stream including each broadcast channel, demuxing of a broadcast channel selected by a user, and decoding time of a broadcast program. Channel movement speed is slower than analog broadcasting.

In general, when a user is less interested in a channel being watched while watching a broadcast, the user may check the broadcast of another channel using a channel up / down key or a program guide. In the following, a process of searching for and requesting another broadcast channel is defined as channel surfing.

There are so many channels in digital broadcasting that provide an electronic program guide (EPG) for a fast channel search service to the user.

The digital broadcasting system receives a video signal of a program currently being broadcast from a predetermined EPG generation unit, processes it (converts it to a small size), and at a glance, the video, channel name, program information, etc. of the program currently being broadcast. Provides an electronic program guide for you to check out.

The electronic program guide is encoded and transmitted to a broadcast receiving terminal through a predetermined transport stream.

In addition, the electronic program guide is provided in a mosaic form. In general, the unit electronic program guide includes 12 or 16 sub videos.

1 is a flow chart of surfing a desired channel through a mosaic EPG according to the prior art.

Referring to FIG. 1, when there is a user's channel surfing request (step 100), the broadcast receiving terminal tunes a transport stream having a mosaic EPG (step 102).

Thereafter, the broadcast receiving terminal decodes the video included in the mosaic EPG (step 104) and edits the decoded video (step 106).

Through video editing, an EPG like mosaic is output on the screen.

If there is a user's broadcast channel selection through the EPG (step 108), the broadcast receiving terminal tunes the transport stream with the channel selected by the user (step 110). Thereafter, audio and video of the broadcast channel selected by the user are decoded and played back (step 112).

According to the prior art, a broadcast channel and an EPG channel are arbitrarily allocated to individual transport streams in the presence of a large number of broadcast channels. In general, the channel travel time is fast within the same transport stream. If the channel being watched by the user before step 100 and the transport stream of the mosaic EPG channel are different from each other, the transmission of the mosaic EPG channel and the user-selected broadcast channel is performed in step 110. If the streams are different, there is a problem in that in each case, the channel travel time is long, thereby providing a great inconvenience to the user.

The present invention to solve the problems of the prior art as described above, to propose a method and system that can reduce the viewer's channel surfing time through the viewer's viewing pattern.

It is another object of the present invention to provide a method and system that can minimize the time required when a user selects a program guide and thereby selects a desired channel.

Another object of the present invention is to provide a method and system capable of dynamically allocating a broadcast channel to a transport stream to reduce channel surfing time.

According to a preferred embodiment of the present invention to achieve the above object, a method for providing a digital broadcast service to the one or more broadcast receiving terminal over the network, (a) viewing information for the individual broadcast channel from the broadcast receiving terminal; Collecting the; (b) selecting one or more broadcast channels included in at least a predetermined rating rating based on the collected viewing information; And (c) transmitting the broadcast program for the selected one or more broadcast channels to the broadcast receiving terminal in a single transport stream.

According to another aspect of the present invention, a computer readable recording medium for performing the above method is provided.

According to another aspect of the present invention, a system for providing a broadcast service to one or more broadcast receiving terminals through a network, the system comprising: an AV storage unit for storing a broadcast program for each broadcast channel; An AV encoder for encoding audio and video signals of the broadcast program according to a preset algorithm; And a transport stream allocator configured to allocate, to a single transport stream, one or more broadcast channels included in at least a predetermined audience rating rank through viewing information collected from the broadcast receiving terminal.

According to the present invention, there is an advantage that the user can quickly check the program guide while watching the broadcast channel by shortening the channel surfing time.

In addition, according to the present invention, by allocating a program guide and a broadcast channel having a high viewer rating to the same transport stream, the broadcast channel selected by the program guide can be quickly watched.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the drawings, similar reference numerals are used for similar elements.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

 Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the same reference numerals will be used for the same means regardless of the reference numerals in order to facilitate the overall understanding.

2 is a diagram illustrating a configuration of a broadcast system according to an exemplary embodiment of the present invention.

As shown in FIG. 2, the broadcast system 200 according to the present invention may be connected to one or more broadcast receiving terminals 202 through a network.

Here, the network may include both a wired network including the Internet and a dedicated line, and a wireless network including the wireless Internet, a mobile communication network, a broadcasting network, and a satellite communication network. .

The broadcast system 200 converts a broadcast program of various broadcast channels into a form suitable for data broadcasting and transmits the broadcast program to the broadcast receiving terminal 202.

In addition, the broadcast system 200 performs a scheduling function for a broadcast program and a scrambling function for limited reception so that no user other than the subscriber can access.

Furthermore, the broadcast system 200 may provide an Internet service and various communication services, including a separate communication server (eg, a return pass server) for processing a user's requirement through an uplink channel.

The broadcast system 200 may additionally provide an application for using various additional services and interactive services to the user as well as a broadcast program (video / audio / data signal) for a specific broadcast channel.

The broadcast receiving terminal 202 tunes and reproduces a transport stream provided from the broadcast system 200.

In the digital broadcast service, the broadcast system 200 encodes a broadcast program for each broadcast channel and allocates the broadcast program to a specific transport stream for transmission.

The transport stream is a protocol for transmitting video, audio, data, etc. simultaneously in one stream in an MPEG-2 system. The transport stream is composed of broadcast signals for one or more broadcast channels, and the transport stream header forms an entire stream. Program information, time information of the program, control information for controlling the entire system, and the like are included.

In general, about six broadcast channels are allocated to a single transport stream. For example, when 100 broadcast channels exist, the broadcast system transmits broadcast programs belonging to the broadcast channel in about 16 transport streams.

Here, the broadcast receiving terminal 202 may be a set-top box connected to a TV for decoding a broadcast signal and executing an application, but is not limited thereto.

The broadcast receiving terminal 202 decodes and plays a broadcast program belonging to a broadcast channel selected by a user in the tuned transport stream.

An operating system for executing an application is installed in the broadcast receiving terminal 202. If an application is included in the broadcast signal, the broadcast receiving terminal 202 executes the application to provide useful data necessary for the user.

According to a preferred embodiment of the present invention, the broadcast system 200 receives the viewing information of the user and transmits a transport stream based on the viewer rating to the broadcast receiving terminal 202.

The broadcast system 200 according to the present invention transmits one or more broadcast channels having a higher viewer rating as a single transport stream to the broadcast receiving terminal 200 in consideration of the number of broadcast channels allocated to a single transport stream.

In this case, a single transport stream including a broadcast channel having a higher viewer rating may be included with a program guide video source.

Here, the video source for the program guide may be a general mosaic EPG having video signals for a limited number of broadcast programs.

Preferably, the video source for program guide according to the present invention includes sub-videos for all broadcast channels that can be provided.

Here, the sub video refers to a video in which a video of a broadcast program received from each broadcaster is converted into a small size through size adjustment, etc., and the program output from the broadcast receiving terminal 202 when a user requests a channel surfing. The video is output to a predetermined region of the guide.

In addition, the sub video may include a video broadcast in the corresponding channel, but it will be apparent to those skilled in the art that the sub video may include a still image of the corresponding channel without being limited thereto.

Preferably, the program guide video source may include sub-videos for all broadcast programs that can be provided to the broadcast receiving terminal 202 as shown in FIG. 5.

The broadcasting system 200 according to the present invention applies a method according to the H.264 standard having a high compression efficiency in encoding a video source for program guide, and thus a video source for program guide including a large number of sub-videos. Can be generated.

H.264 is the latest video compression standard designed to transmit video with less bandwidth of HD TV. It is called MPEG-4 part10: Advanced Video Coding (AVC). H.264 guarantees a 50% improvement in video compression at most bit rates (Bit-Rates), compared to MPEG4, the latest generation of compression technology.

In general, in the broadcast receiving terminal 202, the channel shift time is about 800 ms when different broadcast channels are in a single transport stream, and the channel shift time is about 1400 ms when it is in another transport stream.

In the case of channel up / down channel surfing, a user generally moves a broadcast channel having a high viewer rating. When one or more broadcast channels having a high viewer rating are arranged in a single transport stream, the channel shift time is increased. It can be shortened to provide convenience to the user.

In addition, in digital broadcasting, a user may surf a channel through a program guide. If a user requests a program guide while watching a broadcast channel and selects a different broadcast channel through the program guide, the video source for each broadcast channel and program guide is assigned to every other transport stream, or one of the broadcast channels and the program guide If the video source for video is assigned to another transport stream, the total channel travel time is 2800 ms.

However, the user is more likely to search for a broadcast channel with a high viewer rating using the program guide. In view of the above, the present invention can significantly reduce the inter-channel travel time during channel surfing by arranging a video source for program guide and a broadcast channel having a high viewer rating in a single transport stream.

When a user requests a different broadcast channel through a program guide while watching a broadcast channel, and each broadcast channel has a higher viewer rating, according to the present invention, a program guide and a program guide move from a previously viewed broadcast channel to a program guide It takes 800 ms each to move from the video source to another broadcast channel, reducing the total channel surfing time to 1600 ms.

Therefore, the channel surfing time according to the present invention is shortened by 1200 ms as compared with the related art.

Hereinafter, the configuration of a broadcast system and a broadcast receiving terminal according to the present invention will be described in detail with reference to FIGS. 3 to 4.

2 is a diagram illustrating a detailed configuration of a broadcast system according to an exemplary embodiment of the present invention.

Referring to FIG. 3, the AV (Audio / Video) storage unit 300 receives and stores a broadcast program including an audio signal and a video signal provided by an external broadcast provider or a terrestrial broadcaster.

The AV server 302 manages the schedule of the broadcast program and outputs a predetermined broadcast program to the AV encoder 304 according to the schedule.

The AV encoder 304 converts the broadcast program into a preset data format. In this case, the AV encoder 304 may convert the audio and video signals into a MPEG2-TS (Moving Picture Experts Group2-Transport Stream) format (AV stream) corresponding to a data broadcast standard.

According to the present invention, the video signal of the broadcast program received from the AV storage unit 300 is transmitted to the video source generation unit 306 for program guide.

The program guide video source generation unit 306 processes the transmitted video signal to generate a sub video for a broadcast program that can be provided.

As described above, the sub video is a signal obtained by converting an original video signal into a small size that can be viewed on the program guide of the broadcast receiving terminal 202.

The program guide video source generator 306 generates sub-videos for all broadcast programs as shown in FIG. 5, and transfers the generated video source to the source encoder 308.

The source encoding unit 308 encodes a video source for program guide according to a preset algorithm, and preferably encodes a plurality of sub-videos using an algorithm according to the H.264 compression standard.

The source encoding unit 308 may be implemented with a high definition (HD) chipset, thereby encoding a video source with high compression efficiency while maintaining high quality.

Meanwhile, in the present invention, the broadcast receiving terminal 202 provides user's viewing information for calculating an audience rating of a broadcast channel or a specific broadcast program.

The network communication unit 310 receives the viewing information of the user from each broadcast receiving terminal 202 through a return path separate from the broadcast receiving terminal 202 and the broadcasting network.

In this case, the network communication unit 310 may receive channel information currently selected by each user and an identifier of the broadcast receiving terminal 202 together.

The viewer rating processor 312 performs a process of calculating viewer rating ranking by statistically processing the viewing information received from the plurality of broadcast receiving terminals 202.

In this case, the viewer rating processor 312 selects one or more broadcast channels or broadcast programs included in a predetermined rating rating or higher based on the collected viewer information.

Here, the viewer rating processor 312 may calculate an average rating for each broadcasting channel or a rating rating for the individual broadcast program.

On the other hand, the viewer rating processor 312 may receive the user's personal information transmitted by the broadcast receiving terminal 202, for example, information such as age, region, age, preference. Through this, the viewer rating processor 312 may separately calculate the viewer rating ranking according to the user's region, age, and age.

In the digital broadcasting service, the same broadcast program for each group to which the user belongs may be allocated to subchannels (for example, 11-1 to 11-n) subordinate to the main channel and transmitted for each group. In this case, the ranking of the viewer ratings for a specific broadcast channel and broadcast program can also be calculated for each group.

In this case, the user's personal information may be previously stored in a separate database, and the viewer rating processor 312 may calculate the viewer rating ranking of the group to which the user belongs.

According to a preferred embodiment of the present invention, the transport stream allocator 314 allocates a broadcast program for a broadcast channel equal to or higher than a preset audience rating among broadcast programs encoded by the AV encoder 304 to a single transport stream.

Here, the viewer rating ranking may be an average rating rating for each broadcasting channel, but is not limited thereto and may be a rating rating ranking for an individual broadcast program.

Preferably, a single transport stream including a broadcast channel or a broadcast program of higher viewer rating may be included with a video source for program guide.

The process of allocating the broadcast channel selected as the higher viewer rating to a single transport stream according to the viewer rating may be performed according to the operator's setting. Alternatively, the process may be performed in a predetermined time period. To this end, the timer unit 313 outputs control information for updating the broadcast channel allocated to a single transport stream according to the viewer rating ranking to the transport stream allocator 314.

Meanwhile, the AV storage unit 300 according to the present invention may include not only an AV signal for a broadcast program but also an advertisement video provided between the broadcast programs. In this case, priority may be given to a specific advertisement video at the request of the advertiser. The transport stream allocator 314 may allocate a broadcast channel including a pre-registered advertisement video to the single transport stream. In this case, the broadcast receiving terminal 202 allows a user to easily access a specific advertising video.

After the allocation of the transport streams is made according to the audience rating ranking, the multiplexer 316 polymerizes the signals allocated to each transport stream into one broadcastable signal.

The modulator 318 modulates the polymerized broadcast signal according to a standard according to a broadcast medium (eg, terrestrial wave, cable, satellite), and the up-converter 320 modulates the modulated signal to a desired transmittable frequency. Perform the process of upconverting.

The transmitter 322 transmits the upconverted signal through the broadcast medium.

4 is a diagram illustrating a detailed configuration of a broadcast receiving terminal according to an embodiment of the present invention.

As described above, FIG. 4 may be a set-top box connected to a TV to provide digital data broadcasting service.

Referring to FIG. 4, the tuner 400 performs a process of tuning a transport stream including a broadcast channel selected by a user. In this case, tuning refers to a process of adjusting a frequency corresponding to a corresponding transport stream to a reception frequency.

The demodulator 402 demodulates the signal output from the tuner 400.

The demodulated signal is a signal including audio, video or data, and the demultiplexer 404 extracts and outputs an audio signal, a video signal or a data signal corresponding to the broadcast channel selected by the user from the demodulated signal. This can be done through demuxing and section filtering.

The audio signal output from the demultiplexer 404 is decoded by the audio decoder 406, and the decoded audio signal is converted into an analog signal through an audio digital analog converter (DAC) 408 and output through the speaker 410.

Meanwhile, the video signal extracted by the demultiplexer 404 is decoded by the video decoder 412 and output as an uncompressed video frame, which is temporarily stored in the video memory 414.

The video memory 414 temporarily stores still images of video frames.

The temporarily stored video frame is output through the display unit 430 via the video DAC 428.

The tuner 400 and the demultiplexer 404 process a broadcast program corresponding to a channel of a user received through the key input receiver 418.

The user selects another broadcast channel through channel number input or the like while viewing the selected broadcast channel. The broadcast channel first selected by the user and the other broadcast channel selected later may be a broadcast channel having a high viewer rating.

According to the present invention, since a plurality of broadcast channels having a high viewer rating are allocated to a single transport stream and transmitted, when a user requests another broadcast channel during viewing of a predetermined broadcast channel having a high viewer rating, the channel is moved within a single transport stream. Just do it.

Accordingly, even when the user selects another broadcast channel, the channel transport time can be shortened because another transport stream tuning process of the tuner 400 is omitted.

On the other hand, the program guide unit 416 processes the program guide video source transmitted from the broadcast system 200 when the channel surfing request of the user from the key input receiving unit 418 processes and outputs.

Preferably, the video guide video source according to the present invention may be assigned to a transport stream such as a broadcast channel with a high viewer rating. Therefore, according to the present invention, when a user requests a channel surfing while watching a broadcasting channel with a high viewership, the channel shift time is shifted because the user moves from a previously viewed broadcasting channel to a channel of a program guide video source within a single transport stream. It can be shortened.

When the channel surf request is made, the program guide unit 416 requests video editing and graphic editing from the output video editing unit 420 and the graphic processing unit 422.

The output video editing unit 420 performs an editing process such as cutting, scaling, and translating a desired region through a video frame temporarily stored in the video memory 414.

The output video editing unit 420 performs an editing process of the sub video included in the video source for program guide.

Preferably, the output video editing unit 420 may selectively edit only the sub video corresponding to the genre or preset audience rating rank among the sub videos for all broadcast programs.

The graphic editing unit 422 extracts a graphic corresponding to the program guide from the graphic memory 424 to perform an editing process.

The graphic may include a preset background screen output together with a program guide for channel selection.

The video / graphics fusion unit 426 fuses the still image of the frame unit stored in the video memory 414 and the graphics provided to the graphic memory 424.

The fused video / graphics are transferred to the video DAC 428, and the video DAC 428 converts the digital video / graphics into analog signals and outputs them to the display unit 430.

The user can check the program guide as shown in FIG. 6 through the editing process of the video source for the program guide.

The user checks the video for the plurality of broadcast channels through the program guide and selects the desired broadcast channel.

In general, a broadcast channel that a user selects through a program guide is also a broadcast channel having a high viewer rating. Therefore, when the user selects a broadcast channel with a high viewer rating through the program guide, the tuner 400 does not need to tune another transport stream, and the demultiplexer 404 does not need to tune the video signal of the broadcast channel selected by the user within a single transport stream. Extract the back.

Therefore, the channel movement time can be significantly reduced compared to tuning other transport streams according to the broadcast channel selection.

Meanwhile, the user behavior monitoring unit 432 receives the current channel information selected by the user from the key input selection unit 418, and transmits the current channel information and the broadcast receiving terminal identifier to the network communication unit 434.

In this case, the user behavior monitoring unit 432 does not simply transmit the current channel information input in real time to the network communication unit 434 but transmits the corresponding information to the network communication unit 434 when the channel selected by the user is maintained for a preset time. I can deliver it.

The network communication unit 434 transmits the current channel information and the identifier of the broadcast reception terminal to the broadcast system 200 in a data packet unit through a predetermined communication network.

Hereinafter, a broadcast service providing process according to the present invention will be described with reference to FIGS. 7 to 8.

7 is a flowchart illustrating an operation of transmitting a transport stream according to an audience rating in a broadcasting system according to the present invention.

Referring to FIG. 7, the broadcast system stores a broadcast program for each broadcast channel (step 700), and processes a video signal of the stored broadcast program to generate a video source for program guide (step 702).

Thereafter, the broadcast system performs encoding on each of a broadcast program and a video guide for a program guide according to a preset algorithm (step 704).

Meanwhile, the broadcast system 200 receives viewing information of each user from the broadcast receiving terminal 202 (step 706), and calculates an audience rating for each broadcasting channel using the viewing information (step 708).

According to the calculated audience rating, the broadcast system 200 assigns a broadcast channel having a preset audience rating and a video source for program guide to a single transport stream (step 710).

Thereafter, the broadcast system 200 transmits a single transport stream to the broadcast reception terminal 202 (step 712).

8 is a flowchart illustrating an operation of processing a transport stream in a broadcast receiving terminal according to the present invention.

FIG. 8 illustrates a channel surfing request while a user watches a first broadcast channel having a high viewer rating assigned to a single transport stream, and selects a first broadcast channel and a second broadcast channel disposed in a single transport stream through channel surfing. The case is described as an example.

Referring to FIG. 8, the broadcast receiving terminal 202 tunes a transport stream including a first broadcast channel according to a user's request, and decodes and plays a broadcast program for the first broadcast channel (step 800).

Then, it is determined whether there is a channel surfing request of the user (step 802), and if there is a channel surfing request of the user, demuxing of the program guide video source channel allocated to the transport stream tuned in step 800 is performed. (Step 804).

After the channel shift, the program guide is output to the display through decoding and editing of the video of the video source (step 806).

The broadcast receiving terminal 202 determines whether there is a channel selection of the user on the program guide (step 808), and if there is a selection of the second broadcast channel, the second broadcast channel allocated to the transport stream tuned in step 800. Demuxing is performed (step 810).

Thereafter, video and audio of the demuxed second broadcast channel are decoded and reproduced (step 812).

As described above, when the user moves between broadcast channels having a high viewer rating through the program guide, the broadcast receiving terminal according to the present invention has a channel shift time because the program guide and the previous and current broadcast channels are allocated to a single transport stream. Can be greatly reduced.

Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art will be able to make various modifications, changes, and additions within the spirit and scope of the present invention. Additions should be considered to be within the scope of the following claims.

1 is a flow chart of surfing a desired channel through a mosaic EPG according to the prior art.

2 is a diagram illustrating a configuration of a broadcast system according to an embodiment of the present invention.

3 is a block diagram of a broadcasting system according to an exemplary embodiment of the present invention.

4 is a block diagram of a broadcast receiving terminal according to an embodiment of the present invention.

5 is a diagram showing the configuration of a video source for program guide according to the present invention;

6 is a diagram showing an example of a program guide according to the present invention;

7 is a flowchart illustrating a single transport stream allocation process according to the present invention.

8 is a flowchart illustrating a channel surfing process in a broadcast receiving terminal according to the present invention.

<Description of main parts of drawing>

200: broadcast system 202: broadcast receiving terminal

300: AV storage unit 304: AV encoding unit

306: Video source generator for the program guide

310: network communication unit 312: viewership processing unit

314: transport stream allocation unit 416: program guide unit

Claims (12)

A method of providing a digital broadcast service to a network via one or more broadcast receiving terminals, (a) collecting viewing information on an individual broadcast channel from the broadcast receiving terminal; (b) selecting one or more broadcast channels included in at least a predetermined rating rating based on the collected viewing information; And (c) transmitting the broadcast program for the selected one or more broadcast channels to the broadcast receiving terminal in a single transport stream. The method of claim 1, And the single transport stream comprises a video guide video source generated by processing video for a plurality of broadcast channels. The method of claim 2, The program guide video source includes a sub video for all broadcast channels that can be provided. The method of claim 1, The method of allocating the selected broadcast channel to the single transport stream is performed periodically at a preset time period. The method of claim 1, The step (b) is a digital broadcast service providing method performed through the overall average viewer rating of a broadcast channel or the viewer rating of an individual broadcast program. The method of claim 5, The step (c) is a digital broadcast service providing method of transmitting a broadcast channel including the selected broadcast program and the program guide video source to the single transport stream at the playing time of the broadcast program selected by the predetermined audience rating ranking. The method of claim 2, And a broadcast channel including the registered advertisement video and the program guide video source in the single transport stream at a reproduction time of a pre-registered advertisement video. The method of claim 1, And the viewing information is transmitted from the broadcast receiving terminal when the maintenance time for the broadcasting channel being viewed passes a preset time. A computer-readable recording medium carrying out the method of claim 1. In the system for providing a broadcast service to one or more broadcast receiving terminal over a network, An AV storage unit for storing a broadcast program for each broadcast channel; An AV encoder for encoding audio and video signals of the broadcast program according to a preset algorithm; And And a transport stream allocator configured to allocate, to a single transport stream, one or more broadcast channels included in at least a predetermined audience rating rank through viewing information collected from the broadcast receiving terminal. The method of claim 10, A program guide source generation unit for processing video signals for a plurality of broadcast programs to generate a video source for program guide; And Further comprising a source encoding unit for encoding the video source for the program guide using a predetermined algorithm, The transport stream allocator assigns the broadcast channel and the program guide video source to the single transport stream. The method of claim 10, And a timer unit for outputting a control signal for updating a broadcast channel allocated to a single transport stream to the transport stream allocator.

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