KR20070002964A - Method for providing multi level channel in digital broadcasting system - Google Patents

Abstract

A method for configuring a multi-grade channel of a digital broadcasting system is provided to allow viewers of various grades to widely view one contents by correcting only several scenes and configuring a channel capable of being classified into various grade levels without including an additional PES(Program Elementary Stream). If a certain channel is selected(S200), a PSIP(Program and System Information Protocol) parsing unit judges whether RRT(Region Rate Table) information exists in a broadcasting program of the corresponding channel(S202). If the RRT information exists in the broadcasting program of the channel, the PSIP parsing unit judges whether the broadcasting program satisfies an RRT blocking condition(S204). When the broadcasting program satisfies the RRT blocking condition, the PSIP parsing unit judges whether DCCT(Direct Channel Change Table) information exists in the broadcasting program of the channel(S206). When the DCCT information exists, the PSIP parsing unit changes information of the channel to a channel grade corresponding to the DCCT information(S208). The PSIP parsing unit judges whether mosaic information exists in the broadcasting program of the channel(S210). If the mosaic information exists, the PSIP parsing unit mosaicks and outputs the broadcasting program according to the mosaic information(S212,S214).

Description

How to configure multi-level channel of digital broadcasting system {METHOD FOR PROVIDING MULTI LEVEL CHANNEL IN DIGITAL BROADCASTING SYSTEM}

1 is a block diagram illustrating a digital broadcasting system for performing a method according to the present invention;

2 is a flowchart of a multi-level channel configuration process of a digital broadcasting system according to an embodiment of the present invention.

<Explanation of symbols for main parts of the drawings>

100: VCT 102a: Audio PES

102b: Video PES 104a: Audio Decoder

104b: video decoder 106: mosaic processing unit

108: PSIP parser 110: RRT

112: DCCT 114: Mosaic processing information table

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a channel setting technique of a digital broadcasting system, and more particularly, to a method of configuring a multi-class channel of a digital broadcasting system suitable for setting a multi-level parental level with a minimum bandwidth on a transport stream (TS). .

Recently, with the development of digital technologies such as digital image compression and digital modulation / demodulation, the standardization and commercialization of digital television broadcasting is rapidly progressing. Also, in the conventional terrestrial, satellite, and cable broadcasting, MPEG (Moving Picture Experts Group) Based on this trend, digitalization is on the rise.

In digital broadcasting, a plurality of broadcast programs encoded on the basis of MPEG are multiplexed and transmitted in the form of a transport stream (TS). The transport stream is received by a digital broadcast receiver such as a set-top box (STB) installed on the receiver side. A plurality of broadcast programs included in are multiplexed.

Therefore, only one broadcasting program desired by the user can be selected. Also, in a digital broadcasting receiver such as a set-top box, the selected broadcasting program is restored to the original audio and video signal using an MPEG decoder provided in the receiver, The output is sent to the same A / V output device.

In addition, a large-capacity hard disk (HDD) is additionally provided in a digital broadcast receiver such as a set-top box, and a program stored in the hard disk is stored on a hard disk after being transmitted to an A / V output device such as a television. Digital broadcasting systems, which are further equipped with a digital broadcasting recording / reproducing function for reproducing and outputting broadcasting programs recorded on a disk, have been developed and released and are widely spread.

However, in such a digital broadcasting system, as in general analog broadcasting systems, there has been a problem of unilaterally supplying broadcast programs to an unspecified majority without considering viewers' sex, gender, and status.

In order to prevent the indiscriminate supply of programs that are not helpful to the emotions of the youth, a method of setting viewer ratings for each broadcasting program to limit the viewing of the viewers has been proposed.

In this way, the broadcasting station provides a rating information (Region Rate Table: RRT) for the broadcast program, and the viewer sets a rating of the broadcast program based on the rating information received by the broadcast receiving device, so that a broadcast program having a lower rating or less is set. A method of preventing output through a screen and a speaker of a broadcast receiving device has been used.

Alternatively, a channel may be changed to watch another service through a direct channel change table (DCCT), or a separate channel may be configured by using a separate stream having a different grade.

However, such a conventional program limitation technique has a problem that it is not possible to set various viewing grades for the same content and waste of bandwidth is severe. In other words, even if a broadcast program has been restricted to a certain level, it is necessary to allow partial viewing according to a user. In this case, a broadcast-limited broadcast program and a broadcast program that are not viewed for one content must be transmitted separately. Therefore, there is a problem that additional transport stream bandwidth is required.

The present invention is to overcome the above-mentioned limitations of the prior art, and does not include a separate program elementary stream (PES), and constitutes a plurality of grade channels, for example, by modifying only a few scenes to be divided into various grade levels. The purpose of the present invention is to provide a multi-level channel configuration method of a digital broadcasting system in which a wide range of viewers can view a wide range of content for a single content.

According to a preferred embodiment of the present invention for achieving the above object, as a channel configuration method of the digital broadcasting system, if any channel is selected, a first step of determining whether the RRT information exists in the broadcast program of the channel, and Determining whether the broadcast program satisfies the RRT blocking condition if the RRT information exists in a broadcast program; and determining whether DCCT information exists in the broadcast program of the channel when the broadcast program satisfies the RRT blocking condition. And a third step of changing the information of the channel to a channel class corresponding to the DCCT information when the DCCT information exists, determining whether mosaic information exists in a broadcast program of the channel, and the mosaic information exists. Mosaic the broadcast program according to the mosaic information. And a fourth step of outputting the PSIP information, a fifth step of determining whether the PSIP information of the broadcast program is changed, and feeding back to the second step if the PSIP information is changed, and a channel by the user if the PSIP information is not changed. The present invention provides a method for constructing a multi-level channel of a digital broadcasting system comprising a sixth step of determining whether a change is made and if the channel is changed by the user.

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

1 is a schematic block diagram of a digital broadcasting system for implementing a method according to the present invention, which includes a virtual channel table (VCT) 100, an audio PES 102a, a video PES 102b, and an audio decoder 104a. , A video decoder 104b, a mosaic processor 106, a PSIP (Program & System Information Protocol) parser 108, an RRT 110, a DCCT 112, and a mosaic processing information table 114.

The VCT 100 is a virtual channel table. The VCT 100 divides and provides channel information of different grades for the same program. For example, a single program may be divided into a channel 10a of an unviewable grade under the age of 19 and a channel 10b of a viewable grade.

The audio PES 102a transmits audio PES information of a corresponding channel of the VCT 100, and the video PES 102b plays a role of transmitting video PES information of a corresponding channel of the VCT 100.

The audio decoder 104a encodes audio PES information from the audio PES 102a, and the video decoder 104b encodes and outputs video PES information from the video PES 102b.

The mosaic processor 106 performs a mosaic process on the encoded audio and video signals provided from the audio decoder 104a and the video decoder 104b and outputs them to an external screen. This mosaicized information is temporarily recorded in the mosaic processing information table 114 described later.

The PSIP parser 108 changes the channel grade of the broadcast program with reference to the VCT information, the RRT information, the DCCT information, and the like. The RRT information is stored in the RRT 110 and the DCCT information is stored in the DCCT 112, respectively. It is recorded. That is, the RRT information and the DCCT information are changed through the PSIP parser 108, and the changed information may be provided to the above-described VCT 100.

Hereinafter, the above-described configuration will be described in detail with reference to a flowchart of FIG. 2 attached to a multi-level channel configuration process of a digital broadcasting system according to an exemplary embodiment of the present invention.

First, when an arbitrary channel is selected as in step S200, the PSIP parsing unit 108 proceeds to step S202 to determine whether RRT information exists in the broadcast program of the corresponding channel.

As a result of the determination in step S202, if RRT information exists in the broadcast program of the corresponding channel, the PSIP parser 108 proceeds to step S204 to determine whether the current broadcast program satisfies the RRT blocking condition, and the current broadcast program. If this RRT blocking condition is satisfied, the process proceeds to step S206.

In step S206, the PSIP parser 108 determines whether DCCT information exists in the broadcast program of the corresponding channel. If the DCCT information exists, the PSIP parser 108 proceeds to step S208 to correspond to the DCCT. The channel information is changed to the channel class.

Subsequently, in step S210, the PSIP parser 108 determines whether the microphone information exists in the broadcast program of the corresponding channel, and if the mosaic information exists, the PSIP parser 108 proceeds to step S212 to perform the mosaic processor ( Through 106, control is performed to mosaic the broadcast program according to the corresponding information.

At this time, such a mosaic process is performed even when the above-mentioned RRT information does not exist, does not satisfy the RRT blocking condition, or when DCCT information does not exist, and in the present invention, to provide a more diverse audience rating setting environment. It is characterized by one.

On the other hand, after such a mosaic processing process, the PSIP parser 108 proceeds to step S214 to mosaic the broadcast program to output the audio and video signals.

At this time, the PSIP parser 108 determines whether the current PSIP information is changed as in step S216, and if the PSIP information is changed, feeds back to step S202 to repeat the above-described process, but the PSIP information is changed. If not, the process proceeds to step S218 to determine whether the channel is changed by the user.

If it is determined in step S218 that the channel is changed by the user, the PSIP parser 108 feeds back to step S202, but otherwise, the PSIP parser 108 ends the process.

As described above, the embodiments of the present invention have been described in detail, but the present invention is not limited to these embodiments, and various modifications may be made by those skilled in the art within the spirit and scope of the present invention described in the claims below.

According to the present invention, a multi-channel configuration divided into a plurality of grades by a mosaic processing method transmits various contents that can be graded by modifying only a few scenes without overlapping and efficiently utilizes a limited bandwidth so that viewers of various groups Make this content available.

Claims (3)

As a channel configuration method of a digital broadcasting system, A first step of determining whether RRT information exists in a broadcast program of a corresponding channel when an arbitrary channel is selected; If the RRT information is present in the broadcast program of the channel, it is determined whether the broadcast program satisfies the RRT blocking condition. If the broadcast program satisfies the RRT blocking condition, it is determined whether DCCT information exists in the broadcast program of the channel. With the second step, A third step of changing the information of the channel to a channel class corresponding to the DCCT information when the DCCT information exists; Determining whether mosaic information exists in the broadcast program of the channel; and if the mosaic information exists, mosaicing the broadcast program according to the mosaic information and outputting the mosaic information; Multi-level channel configuration method of the digital broadcasting system comprising a. The method of claim 1, The method, Determining whether the PSIP information of the broadcast program is changed, and if the PSIP information is changed, feeding back to the second step; Determining whether the channel is changed by the user if the PSIP information is not changed, and feeding back to the second step if the channel is changed by the user The multi-grade channel configuration method of the digital broadcasting system further comprising a. The method of claim 1, The fourth step is performed when the RRT information does not exist, the RRT blocking condition is not satisfied, or the DCCT information does not exist.

Images