KR20110065313A - Method for providing broadcasting service of apparatus for transmitting and receiving broadcasting signal - Google Patents

Abstract

PURPOSE: A broadcasting service providing method of a broadcasting signal transceiving apparatus is provided to transmit integrated EPG information including physical channel information though an additionally secured improved layer. CONSTITUTION: A broadcasting signal receiving apparatus receives integrated EPG(Electronic Program Guide) information with the selection of an integrated EPG channel(S1110). The broadcasting signal receiving apparatus extracts the physical channel information of each frequency block within a corresponding broadcasting frequency with the analysis of the integrated EPG information(S1120,S1130). If a user selects a special channel, the broadcasting signal receiving apparatus moves to a channel within a corresponding frequency block with the extracted physical channel information(S1140,S1150). The broadcasting signal receiving apparatus extracts a broadcasting service from a corresponding channel(S1160).

Description

Broadcasting service providing method of a broadcast signal transmitting and receiving device {METHOD FOR PROVIDING BROADCASTING SERVICE OF APPARATUS FOR TRANSMITTING AND RECEIVING BROADCASTING SIGNAL}

The present invention relates to a broadcast service providing method of a broadcast signal transmitting and receiving apparatus.

Digital multimedia broadcasting systems such as terrestrial digital multimedia broadcasting (T-DMB), unlike satellite DMB, cannot be broadcasted nationwide by single frequency network (SFN) due to frequency conditions. It is broadcast by dividing into multi-frequency broadcasting (Multi Frequency Network, MFN) to save.

Therefore, in order to receive the T-DMB, channel information must be extracted by scanning all channels in the corresponding region. In addition, when the area is changed due to the movement of the terminal receiving the T-DMB, since the channel in the corresponding area must be searched and set again, the time required for channel switching becomes longer.

The technical problem to be solved by the present invention is to provide a broadcast service providing method of a broadcast signal transmission and reception apparatus that can reduce the time required for channel search and channel switching.

According to an embodiment of the present invention, a method for providing a broadcast service in a broadcast signal receiving apparatus is provided. The broadcast service providing method includes receiving integrated electronic program guide (EPG) information including physical channel information of a broadcast area through an integrated EPG channel, and extracting integrated EPG information by analyzing the integrated EPG information. And searching for a channel of a corresponding broadcast area by using the integrated EPG information.

According to another embodiment of the present invention, a method for providing a broadcast service in a broadcast signal transmission apparatus is provided. The broadcast service providing method includes setting one channel among a plurality of channels as an integrated electronic program guide (EPG) channel, and using the integrated EPG channel, integrated EPG information including physical channel information of a broadcast area. Transmitting.

According to another embodiment of the present invention, a method for providing a broadcast service in a broadcast signal receiving apparatus is provided. The method for providing a broadcast service includes receiving a broadcast signal, demodulating the broadcast signal to output a hierarchical modulated signal, and demodulating the hierarchical modulated signal into a base layer signal and an enhancement layer signal. The layer signal includes integrated electronic program guide (EPG) information.

According to another embodiment of the present invention, a method for providing a broadcast service in a broadcast signal transmission apparatus is provided. The broadcast service providing method includes generating a layer modulated signal by hierarchically modulating a base layer signal of a base layer and an enhancement layer signal of an enhancement layer, and transmitting a broadcast signal by modulating the layer modulated signal into a broadcast signal. The enhancement layer signal includes integrated EPG information.

According to an embodiment of the present invention, channel information retrieval and switching can be performed quickly and efficiently by transmitting integrated EPG information including physical channel information through an additional enhancement layer.

1 is a view schematically showing a broadcast signal transmission and reception system according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating a channel extension concept introduced in the broadcast signal transmission apparatus shown in FIG. 1.
3 is a diagram illustrating a method of transmitting integrated EPG information according to a first embodiment of the present invention.
4 is a diagram illustrating an example of integrated EPG information.
5 is a diagram illustrating a method of transmitting integrated EPG information according to a second embodiment of the present invention.
6 is a diagram illustrating an example of a method for receiving integrated EPG information of a broadcast signal receiving apparatus according to an embodiment of the present invention.
7 is a diagram illustrating another example of integrated EPG information.
8 is a diagram illustrating an example of a broadcast service providing method of a broadcast signal receiving apparatus according to an embodiment of the present invention.
9 illustrates an example of broadcast area handover.
10 is a diagram illustrating another example at the time of broadcast area handover.
11 and 12 are diagrams illustrating a method of receiving integrated EPG information according to the first and second embodiments of the present invention, respectively.

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. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. 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 and claims, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

Now, a broadcast service providing method of a broadcast signal transmitting and receiving device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram schematically illustrating a broadcast signal transmission and reception system according to an embodiment of the present invention, and FIG. 2 is a diagram illustrating a channel extension concept introduced in the broadcast signal transmission apparatus shown in FIG. 1. 3 is a diagram illustrating a method of transmitting integrated EPG information according to the first embodiment of the present invention, and FIG. 4 is a diagram illustrating an example of integrated EPG information.

1 and 2, the broadcast signal transmission and reception system includes a broadcast signal transmission device 100 and a broadcast signal reception device 200.

The broadcast signal transmitting apparatus 100 transmits a broadcast signal in which an enhancement layer signal for increasing transmission capacity is added to a base layer signal for transmitting a basic digital multimedia broadcasting service by using a hierarchical modulation technique. In this case, the enhancement layer signal may include integrated EPG information.

The broadcast signal transmission apparatus 100 may be, for example, an advanced terrestrial digital multimedia broadcasting (AT-DMB) transmitter. In this case, the base layer is a layer supporting terrestrial digital multimedia broadcasting (T-DMB) service, and an enhancement layer is added to increase the transmission capacity of the T-DMB. It may be a layer.

Referring to FIG. 2, the apparatus 100 for transmitting broadcast signals includes a base layer channel that is a T-DMB transmission channel and an enhancement layer channel that is added due to hierarchical modulation, and includes a broadcast signal of a base layer channel and an enhancement layer channel. The broadcast signal is transmitted to the apparatus 200.

The base layer channel is a channel supporting a broadcast service by a base layer signal.

The enhancement layer channel is a channel supporting a broadcast service by an enhancement layer signal.

The broadcast signal transmitting apparatus 100 may transmit a base layer channel by dividing a bandwidth of 6MHZ of one TV channel into frequency blocks BL_A, BL_B, BL_C having a bandwidth of 1.536 MHz.

Also, the broadcast signal transmitting apparatus 100 may transmit an enhancement layer channel through an enhancement layer within the same frequency block as the base layer channel based on one DMB frequency block. Accordingly, the broadcast signal transmission apparatus 100 may increase the channel capacity of 50% to 100% for one frequency block while maintaining compatibility with the broadcast service based on the base layer signal.

The broadcast signal transmission apparatus 100 according to an embodiment of the present invention transmits the integrated EPG information through the enhancement layer so that channel search and channel conversion in the broadcast area can be quickly performed.

Specifically, referring to FIG. 3, the apparatus 100 for transmitting broadcast signals sets one enhancement layer channel as an integrated electronic program guide (EPG) channel in a frequency block of an enhancement layer and integrates it into an integrated EPG channel. Send EPG information.

This integrated EPG information includes EPG information 110 and physical channel information 120, as shown in FIG.

The EPG information 110 is electronic program guide information transmitted for the purpose of convenience of program search, and includes all broadcast program information of the base layer channel and the enhancement layer channel. Using this EPG information, the user can search for the genre, producer, performer, broadcast time, etc. desired by the user among all broadcast programs of the base layer channel and the enhancement layer channel, and select the desired broadcast program.

The physical channel information 120 is information necessary for channel switching for all frequency blocks or all frequency blocks of the corresponding area. The physical channel information includes frequency block information, center frequency, basic ensemble information, and fast information channel for each frequency block. The service ID and the service component ID included in the channel (FIC) information may be included. Using this physical channel information, it is possible to obtain the physical channel information required in the region without a channel scan.

Referring back to FIG. 1, the broadcast signal receiving apparatus 200 receives a broadcast signal, demodulates the received broadcast signal into a hierarchical modulated signal, hierarchically demodulates the hierarchical modulated signal into a base layer signal and an enhancement layer signal, and performs a corresponding channel. Outputs the broadcast service. In this case, the integrated EPG information may be included in the enhancement layer signal.

The broadcast signal receiving apparatus 200 receives the integrated EPG information transmitted through the integrated EPG channel of the enhancement layer and analyzes the integrated EPG information to obtain physical channel information necessary for channel search and change.

Then, since the broadcast signal receiving apparatus 200 may obtain physical channel information necessary for channel search and channel switching of the regional area by analyzing the integrated EPG information, the broadcast signal receiving apparatus 200 may shorten the time required to search for the channel required for the regional area. Accordingly, channel switching can also be performed quickly.

5 is a diagram illustrating a method for transmitting integrated EPG information according to a second embodiment of the present invention, and FIG. 6 is a diagram illustrating an example of a method for receiving integrated EPG information in an apparatus for receiving broadcast signals according to an embodiment of the present invention. to be.

Referring to FIG. 5, the apparatus 100 for transmitting broadcast signals may separate and transmit physical channel information and EPG information necessary for channel search and change into an integrated EPG channel.

In more detail, the broadcast signal transmission apparatus 100 may transmit only physical channel information necessary for channel switching for all frequency blocks of the corresponding broadcast area through the EPG integrated channel. Then, the broadcast signal receiving apparatus 200 may obtain physical channel information necessary for channel search and change through the integrated EPG channel.

According to the first embodiment of the present invention, since the integrated EPG information is transmitted through the integrated EPG channel, the broadcast signal receiving apparatus 200 must search for physical channel information necessary for channel search and change among the integrated EPG information. However, in the second embodiment of the present invention, since only physical channel information is transmitted through the integrated EPG channel, the broadcast signal receiving apparatus 200 may reduce the acquisition time of the physical channel information as compared with the first embodiment.

In contrast, the broadcast signal transmission apparatus 100 may transmit the EPG information after first transmitting physical channel information necessary for channel switching to all the frequency blocks of the corresponding broadcast area through the EPG integrated channel.

In addition, since the integrated EPG information can be received in the background, as shown in FIG. 6, the broadcast signal receiving apparatus 200 provides a broadcast service of a base layer channel selected by the user to the user and simultaneously transmits the integrated EPG to the enhancement layer. Information can be received in the background. Thus, no additional time upon receipt of the integrated EPG information is needed.

Alternatively, the broadcast signal transmitting apparatus 100 may transmit two EPG information and physical channel information separately by setting two enhancement layer channels as channels for transmitting EPG information and physical channel information, respectively, in the frequency block of the enhancement layer. .

7 is a diagram illustrating another example of integrated EPG information, and FIG. 8 is a diagram illustrating an example of a broadcast service providing method of a broadcast signal receiving apparatus according to an embodiment of the present invention.

Referring to FIG. 7, the integrated EPG information may further include user service information 130 in addition to the EPG information 110 and the physical channel information 120 in the regional broadcasting frequency band.

The user service information 130 may include an advertisement image, a video or life information, and emergency / disaster information.

Then, the broadcast signal receiving apparatus 200 receives the integrated EPG information through the integrated EPG channel, and analyzes the extracted EPG information to extract user service information.

If there is a channel change request from the user, the broadcast signal receiving apparatus 200 outputs user service information during the channel switching period. For example, as shown in FIG. 8, the broadcast signal receiving apparatus 200 may provide an advertisement image so as to reduce the boredom of the user during the channel switching period from the A channel to the B channel.

9 illustrates an example of broadcast area handover.

In FIG. 9, two zones A and B are illustrated, and it is assumed that broadcasting frequencies of the zones A and B are different from each other.

Referring to FIG. 9, the broadcast signal transmitting apparatus 100 of the zones A and B integrates one enhancement layer channel in the broadcast frequency bands of the channels 10ch and 13ch corresponding to the zones A and B, respectively. Each EPG channel is set, and the integrated EPG information is transmitted to the integrated EPG channel.

Then, the broadcast signal receiving apparatus 200 handed over from the region A to the region B receives the integrated EPG information through the integrated EPG channel of the region B, and analyzes the integrated EPG information to analyze the region. Physical channel information of may be obtained.

Thereafter, if a user requests a channel change, the broadcast signal receiving apparatus 200 may quickly perform a channel change by using physical channel information.

That is, even when a handover occurs due to the movement of the region, the broadcast signal receiving apparatus 200 can quickly obtain necessary channel information without performing a channel scan to search the entire channel in the region B. It can be done.

10 is a diagram illustrating another example at the time of broadcast area handover.

In FIG. 10, two zones A and B are illustrated, and it is assumed that broadcast frequencies of the zones A and B are the same.

Referring to FIG. 10, since the integrated EPG channels in the zones A and B are the same, the broadcast signal receiving apparatus 200 handed over from the zone A to the zone B always receives the integrated EPG information in the background. You can update it.

Therefore, when a channel change request is received from a user, the broadcast signal receiving apparatus 200 may quickly perform channel change using physical channel information.

That is, the broadcast signal receiving apparatus 200 always updates the integrated EPG information in the background even during a handover according to the movement of the regional area, and thus, an additional channel search process according to the handover is not necessary. In addition, since the integrated EPG information is transmitted through the enhancement layer, the broadcast signal receiving apparatus 200 may change the channel according to the user's selection without interruption or movement of the broadcast service transmitted through the base layer.

11 is a diagram illustrating a method of receiving integrated EPG information according to a first embodiment of the present invention.

Referring to FIG. 11, the broadcast signal receiving apparatus 200 receives integrated EPG information by selecting an integrated EPG channel (S1110).

The broadcast signal receiving apparatus 200 extracts physical channel information in each frequency block within a corresponding broadcast frequency by analyzing the integrated EPG information (S1120 to S1130).

When the user selects a specific channel (S1140), the broadcast signal receiving apparatus 200 moves to a channel within a corresponding frequency block using the extracted physical channel information (S1150), and extracts a broadcast service from the corresponding channel. Provided to (S1160).

12 is a diagram illustrating a method of receiving integrated EPG information according to a second embodiment of the present invention.

Referring to FIG. 12, the broadcast signal receiving apparatus 200 sets a base layer channel in a frequency block including an integrated EPG channel as a start channel by setting of a user (S1210).

When the user requests a broadcast service (S1220), the broadcast signal receiving apparatus 200 provides a broadcast service of a base layer channel set as a start channel (S1230). At the same time, the broadcast signal receiving apparatus 200 receives the integrated EPG information transmitted through the integrated EPG channel in the background, analyzes the integrated EPG information (S1240 to S1250), and extracts physical channel information in each frequency block within the corresponding broadcast frequency. (S1260).

In this case, the broadcast signal receiving apparatus 200 may immediately provide a broadcast service to the user, and may receive the integrated EPG information initially while providing the broadcast service to the user, and thus additional time according to the reception of the integrated EPG information. You do not need this.

An embodiment of the present invention is not implemented only through the above-described apparatus and / or method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded. Such an implementation can be easily implemented by those skilled in the art to which the present invention pertains based on the description of the above-described embodiments.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

Claims (20)

A method of providing a broadcast service in a broadcast signal receiving apparatus,
Receiving integrated electronic program guide (EPG) information including physical channel information of a broadcast area through an integrated EPG channel,
Extracting integrated EPG information by analyzing the integrated EPG information, and
Searching for a channel of a corresponding broadcast area using the integrated EPG information
Broadcast service providing method comprising a. The method of claim 1,
The integrated EPG channel is one of enhancement layer channels of the enhancement layer. The method of claim 2,
Setting a base layer channel in a frequency block including the integrated EPG channel as a start channel, and
When a user requests a broadcast service, providing a broadcast service of a base layer channel set as the start channel.
More,
The integrated EPG information further includes broadcast information of a base layer channel of a base layer and an enhancement layer channel of an enhancement layer. The method of claim 3,
Wherein the receiving comprises:
Periodically updating the EPG information in the background while providing the broadcast service. The method of claim 1,
The integrated EPG information further includes user service information,
The user service information includes at least one of advertisement image, video, life information, emergency / disaster information,
Providing the user service information during a channel switching period when a user requests a channel change;
Broadcast service providing method further comprising. In the broadcast signal transmission apparatus for providing a broadcast service,
Setting one channel of the plurality of channels as an integrated electronic program guide (EPG) channel, and
Transmitting unified EPG information including physical channel information of a broadcast area to the unified EPG channel;
Broadcast service providing method comprising a. The method of claim 6,
Generating a layer modulated signal by layer modulating the base layer signal of the base layer and the enhancement layer signal of the enhancement layer, and
Modulating and outputting the hierarchical modulated signal into a broadcast signal
More,
The integrated EPG channel is one of the enhancement layer channels of the enhancement layer. The method of claim 7, wherein
The integrated EPG information further includes broadcast information of a base layer channel of the base layer and an enhancement layer channel of the enhancement layer. The method of claim 7, wherein
The integrated EPG information further includes user service information,
The user service information includes at least one of advertisement image, video, life information, emergency / disaster information,
The user service information is provided to the user during the channel switching period broadcast service providing method. A method of providing a broadcast service in a broadcast signal receiving apparatus,
Receiving a broadcast signal,
Demodulating the broadcast signal to output a hierarchical modulated signal; and
Demodulating the hierarchical modulated signal into a base layer signal and an enhancement layer signal
Including;
And the enhancement layer signal includes integrated electronic program guide (EPG) information. The method of claim 10,
The integrated EPG information includes the physical channel information of the entire broadcast area. The method of claim 11,
Outputting a broadcast service corresponding to the base layer signal; and
Receiving the integrated EPG information in the background while outputting the broadcast service
Broadcast service providing method further comprising. The method of claim 11,
One enhancement layer channel of the plurality of enhancement layer channels of the enhancement layer is set as an integrated EPG channel for transmitting the integrated EPG information.
Extracting physical channel information of the entire broadcast area by searching the integrated EPG channel;
Further comprising:
The integrated EPG channel is different or the same broadcast service providing method according to the broadcast area. The method of claim 11,
The integrated EPG information further includes broadcast information of a base layer channel of a base layer and an enhancement layer channel of an enhancement layer. The method of claim 11,
The integrated EPG information further includes user service information,
The user service information includes at least one of advertisement image, video, life information, emergency / disaster information,
Providing the user service information during a channel switching period when a user requests a channel change;
Broadcast service providing method further comprising. In the broadcast signal transmission apparatus for providing a broadcast service,
Generating a layer modulated signal by layer modulating the base layer signal of the base layer and the enhancement layer signal of the enhancement layer, and
Transmitting a broadcast signal by modulating the hierarchical modulated signal into a broadcast signal
Including;
And the enhancement layer signal includes integrated EPG information. The method of claim 16,
The integrated EPG information includes the physical channel information of the entire broadcast area. The method of claim 17,
Setting one enhancement layer channel of the plurality of enhancement layer channels of the enhancement layer as an integrated EPG channel for transmission of the integrated EPG information;
More,
The integrated EPG channel is different or the same broadcast service providing method according to the broadcast area. The method of claim 17,
The integrated EPG information further includes broadcast information of a base layer channel of a base layer and an enhancement layer channel of an enhancement layer. The method of claim 17,
The integrated EPG information further includes user service information,
The user service information includes at least one of advertisement image, video, life information, emergency / disaster information,
The user service information is provided to the user during the channel switching period broadcast service providing method.

Images