KR100751810B1 - Channel management method - Google Patents

Channel management method Download PDF

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KR100751810B1
KR100751810B1 KR1020060046378A KR20060046378A KR100751810B1 KR 100751810 B1 KR100751810 B1 KR 100751810B1 KR 1020060046378 A KR1020060046378 A KR 1020060046378A KR 20060046378 A KR20060046378 A KR 20060046378A KR 100751810 B1 KR100751810 B1 KR 100751810B1
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South Korea
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vct
channel
current
channel information
information
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KR1020060046378A
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Korean (ko)
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김성덕
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주식회사 대우일렉트로닉스
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/458—Scheduling content for creating a personalised stream, e.g. by combining a locally stored advertisement with an incoming stream; Updating operations, e.g. for OS modules ; time-related management operations
    • H04N21/4586—Content update operation triggered locally, e.g. by comparing the version of software modules in a DVB carousel to the version stored locally
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering

Abstract

A method for managing channel information is provided to reduce the confusion of a user about a watching program by determining whether a channel is added or deleted through comparison between the current VCT(Virtual Channel Table) and the next VCT, and then informing the user of the determined result. It is determined whether the next VCT is included in a VCT of a selected channel(S110). If the next VCT is included in the VCT of the selected channel, it is determined whether channel information of the selected channel is added or deleted by comparing the next VCT and the current VCT with each other. If the channel information is determined to be added or deleted, the determining result is informed through an OSD(On Screen Display)(S170).

Description

채널정보 관리방법{Channel management method}Channel management method {Channel management method}

도 1 은 일반적인 디지털 TV의 블럭 구성도. 1 is a block diagram of a general digital TV.

도 2 는 종래 기술에 따른 디지털 TV의 채널번호 관리방법을 나타낸 순서도. 2 is a flowchart illustrating a channel number management method of a digital TV according to the prior art.

도 3 은 본 발명에 따른 디지털 TV의 채널번호 관리방법의 순서도.3 is a flowchart of a channel number management method of a digital TV according to the present invention;

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for main parts of the drawings>

21: 튜너 22: 역다중화부21: Tuner 22: Demultiplexer

23: 영상처리부 24: 디스플레이 모듈23: image processing unit 24: display module

25: 마이컴25: Micom

본 발명은 디지털 TV에 관한 것으로서, 더욱 상세하게는 디지털 TV의 마이너 채널을 관리하는 채널정보 관리방법에 관한 것이다.The present invention relates to a digital TV, and more particularly, to a channel information management method for managing a minor channel of a digital TV.

일반적으로 98년 11월 본 방송을 시작한 북미 디지털 티브이 방송은 미국 디지털 방송 규격 위원회인 ATSC(Advanced Television Service Committee)를 통해 디 지털 방송 서비스 규격을 제정하였다.In general, North American digital TV broadcasting, which began broadcasting in November 1998, established the digital broadcasting service standard through the Advanced Television Service Committee (ATSC).

먼저, 전송방식으로 지상파의 경우 8 VSB(Vestigial Side band) 방식을, 케이블의 경우 64 QAM(Quadrature Amplitude Modulation) 방식을, 위성의 경우 QPSK(Quadrature Phase Shift Keying) 방식을 적용하였다.First, 8 VSB (Vestigial Side band) method for terrestrial wave, 64 QAM (Quadrature Amplitude Modulation) method for cable, and QPSK (Quadrature Phase Shift Keying) method for satellite are applied.

그리고 디지털 비디오는 MPEG-2 방식을 적용하며, 오디오는 돌비 디지털 방식인 AC-3를 적용하였다.Digital video uses MPEG-2, and audio uses Dolby Digital, AC-3.

또한 시스템 규격으로는 PSIP(Program Service Information Protocol)를 적용하여 현재 프로그램의 메이저 및 마이너 채널 번호, 비디오/오디오 스트림 정보 그리고 프로그램 상세 정보 등을 제공한다.In addition, PSIP (Program Service Information Protocol) is applied as a system standard to provide major and minor channel numbers, video / audio stream information, and program detailed information of the current program.

이때 PSIP는 디지털 스트림중 0x1FFB의 PID(Packet ID)를 가지는 스트림으로 입력되고 이 스트림을 분석하면 네 가지 테이블로 재구성된다.At this time, the PSIP is input as a stream having a PID (Packet ID) of 0x1FFB among the digital streams, and when the stream is analyzed, it is reconfigured into four tables.

즉, 시스템 시간정보를 구성하는 STT(System Time Table), 지역별 등급정보를 구성하는 RRT(Rating Region Table), 각 프로그램의 상세 정보를 구성하는 EIT(Event Information Table)의 PID 정보를 가지고 있는 MGT(Master Guide Table) 그리고 RF 채널내 실제 디지털 채널에 대한 정보(채널수, 비디오/오디오 PID 등)를 구성하는 VCT(Virtual Channel Table)로 구성된다.That is, MGT (System Time Table) constituting system time information, RRT (Rating Region Table) constituting rating information for each region, and MGT (PID information) of PID information of EIT (Event Information Table) constituting detailed information of each program Master Guide Table) and VCT (Virtual Channel Table) that configures information (number of channels, video / audio PID, etc.) about the actual digital channels in the RF channel.

따라서 VCT를 분석하면 실제 화면상에 나타나는 채널 번호를 파악할 수 있다.Therefore, analyzing the VCT can identify the channel number appearing on the screen.

또한 PSIP는 메이저(Major)-마이너(Minor) 채널번호, 시청제한 정보, 디지털 티브이 캡션정보, 지구 시간정보 및 확장된 프로그램 정보 등이 그 특징으로서, 특 히, 기존의 아날로그 채널번호 할당방식과는 확연히 다른 메이저-마이너 채널번호 할당방식을 사용한다는 것이 두드러진 특징이다.PSIP also features major-minor channel numbers, parental control information, digital TV caption information, earth time information, and extended program information. A distinctive feature is the use of a distinctly different major-minor channel number assignment.

이 메이저-마이너 채널번호는 RF 채널번호가 아닌 방송국 번호를 메이저로 사용하고 하나의 RF 채널에 대해 다중 채널을 구현하기 위해 마이너 채널번호를 할당한다.This major-minor channel number uses a station number rather than an RF channel number as a major and allocates a minor channel number to implement multiple channels for one RF channel.

종래의 기술에 따른 디지털 티브이의 채널번호 할당장치는 도 1 에 도시된 바와 같이, 디지털 채널 선국을 위한 튜너(21), 튜너(21)를 통해 선국된 채널로 전송되는 디지털 스트림을 비디오/오디오/부가/채널 정보로 역다중화하기 위한 역다중화부(22), 역다중화부(22)에서 역다중화된 비디오 정보를 영상처리하기 위한 영상처리부(23), 영상처리부(23)의 출력을 화면상에 디스플레이하기 위한 CRT, LCD 등의 디스플레이 모듈(24), 사용자의 동작명령에 따라 튜너(21), 역다중화부(22) 및 영상처리부(23)를 제어하기 위한 마이컴(25)을 포함하여 구성된다.As shown in FIG. 1, the apparatus for allocating a channel number of a digital TV according to the related art includes a digital stream transmitted through a tuner 21 for tuning a digital channel and a channel tuned through the tuner 21 for video / audio / The demultiplexer 22 for demultiplexing the additional / channel information, the image processor 23 and the image processor 23 for image processing the demultiplexed video information from the demultiplexer 22 are displayed on the screen. And a microcomputer 25 for controlling the tuner 21, the demultiplexer 22, and the image processor 23 according to a user's operation command. .

이와 같이 구성된 종래 기술에 따른 디지털 TV의 채널정보 관리방법을 도 2 를 참조하여 설명하면 다음과 같다.A method of managing channel information of a digital TV according to the prior art configured as described above will be described with reference to FIG. 2.

최초, 채널이 선택되면, 디지털 스트림을 파싱한 후, MGT를 모니터링하여 VCT의 버젼을 체크(S10)하고, 여기서 체크된 VCT 버젼이 변경되었는 지를 판단(S20)한다. First, when the channel is selected, after parsing the digital stream, the MGT is monitored to check the version of the VCT (S10), and it is determined whether the checked VCT version has changed (S20).

이 때, VCT 버젼이 변경되지 않았으면, 상기한 MGT 모니터링과정을 수행하는 한편, VCT 버젼이 변경되었으면 VCT를 다시 파싱하여 현재 채널을 곧바로 업데이트(S30)한다. At this time, if the VCT version is not changed, while performing the above-described MGT monitoring process, if the VCT version is changed, the VCT is parsed again to immediately update the current channel (S30).

이 경우, 가변적인 마이너 채널 개수를 판단할 수 없게 되는데, 이는 종래의 채널정보 관리방법이 실제로 VCT 가 업데이트되었을 때, 그 순간 바로 채널을 업데이트하기 때문이다. In this case, it is not possible to determine the variable number of minor channels, because the conventional channel information management method updates the channels at the moment when the VCT is actually updated.

그러므로, 갑자기 채널이 변경되는 경우가 발생할 수 있고 이 경우 시청중인 사용자는 현재 시청하고 있는 채널이 없어지게 되므로 혼란을 줄 수 있었다.Therefore, a case where a channel is suddenly changed may occur, and in this case, the user who is watching may confuse the channel that is currently being watched.

본 발명은 전술한 문제점을 해결하기 위해 창안된 것으로서, Current VCT와 Next VCT를 통해 마이너 채널이 변경되는 지를 판단하여 사용자에게 경고함으로써 사용자가 채널의 변경상황을 파악할 수 있도록 한 채널정보 관리방법을 제공하는 데 그 목적이 있다. The present invention has been made to solve the above-described problem, and provides a channel information management method that allows the user to determine the channel change status by alerting the user by determining whether the minor channel is changed through the Current VCT and the Next VCT. Its purpose is to.

전술한 목적을 달성하기 위해 창안된 본 발명의 구성은 다음과 같다. 본 발명의 채널정보 관리방법은 디지털 TV의 방송 채널에서 채널이 선택되면, PSIP를 파싱하여 추출된 VCT를 분석하여 상기 VCT를 통해 채널정보를 관리하는 채널정보 관리방법에 있어서, 상기 채널이 선택되면, 상기 VCT에 Next VCT가 존재하는 지를 판단하는 단계, 상기 Next VCT가 존재하면 상기 Next VCT와 Current VCT를 비교하여 상기 선택된 채널의 채널 정보가 추가 또는 삭제되는 지를 판단하는 단계 및 상기 채널 정보가 추가 또는 삭제되면, 상기 채널 정보가 추가 또는 삭제되었음을 OSD(On Screen Display)를 통해 경고하는 단계를 포함하여 이루어지는 것을 특징으로 한다.The present invention devised to achieve the above object is as follows. In the channel information management method of the present invention, when a channel is selected in a broadcast channel of a digital TV, a channel information management method for managing channel information through the VCT by analyzing a extracted VCT by parsing a PSIP, Determining whether a Next VCT exists in the VCT; and if the Next VCT exists, comparing the Next VCT and the Current VCT to determine whether channel information of the selected channel is added or deleted, and adding the channel information. Or, if deleted, warning through the OSD (On Screen Display) that the channel information has been added or deleted.

상기 채널 정보가 추가 또는 삭제되는 지는 상기 Next VCT와 Current VCT에 각각 정의된 num_channels_in_section를 비교하여 상기 num_channels_in_section가 상이하면, 상기 Next VCT와 Current VCT에 각각 정의된 Channel_TSID를 비교하여 판단하는 것을 특징으로 한다.Whether the channel information is added or deleted is determined by comparing num_channels_in_sections defined in the Next VCT and the Current VCT, and comparing the num_channels_in_section, respectively, by comparing the Channel_TSIDs defined in the Next VCT and the Current VCT, respectively.

삭제delete

이하에서는 본 발명의 실시예를 첨부된 도면을 참조하여 상세하게 설명한다. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2 는 종래 기술에 따른 디지털 TV의 채널번호 관리방법을 나타낸 순서도이다. 2 is a flowchart illustrating a channel number management method of a digital TV according to the prior art.

참고로, 본 발명의 실시예를 설명하기에 앞서, 본 발명에 대한 이해를 돕기 위해 VCT에 대해서 간단히 설명하면, 현재 채널에 관련된 정보를 제공하는 테이블인 VCT는 Current VCT 뿐만 아니라 VCT1(Next VCT)을 정의하고 있는데, 이 Current VCT와 Next VCT와의 구별은 VCT의 Current_next_indicator 를 통해 구별한다. 여기서, Current_next_indicator가 1이면 Current VCT이고, Current_next_indicator가 0이면 Next VCT이다. For reference, prior to describing an embodiment of the present invention, to briefly explain the VCT to help understand the present invention, the VCT, which provides information related to the current channel, is not only the current VCT but also VCT1 (Next VCT). This VCT is distinguished from Current VCT and Next VCT through Current_next_indicator of VCT. Here, if Current_next_indicator is 1, it is Current VCT, and if Current_next_indicator is 0, it is Next VCT.

또한, 각 방송국은 고유한 Channel_TSID를 부여받는데, Source_ID는 각 채널별로 고유한 번호를 할당한다. 즉, 다수개의 마이너 채널은 각각 고유한 Source_ID를 가진다.In addition, each broadcasting station is assigned a unique Channel_TSID, and Source_ID assigns a unique number for each channel. That is, the plurality of minor channels each have a unique Source_ID.

이하, 본 발명의 실시예에 따른 채널번호 관리방법을 도 2 를 참조하여 상세 하게 설명한다. Hereinafter, a channel number management method according to an embodiment of the present invention will be described in detail with reference to FIG.

본 발명의 실시예에 따른 채널번호 관리방법은 채널이 선택되면, PSIP를 파싱하여 MGT를 모니터링한다. 이 때, VCT 버젼을 체크(S110)하고, 체크된 VCT 버젼이 변경되었는 지를 판단(S120)한다. In the channel number management method according to an embodiment of the present invention, when a channel is selected, the PSIP is parsed to monitor the MGT. At this time, the VCT version is checked (S110), and it is determined whether the checked VCT version has changed (S120).

이 경우, VCT 버젼이 변경되었으면, 현재 채널을 업데이트(S125)하고, VCT 버젼이 변경되지 않았으면, Next VCT인 지를 판단(S130)한다. In this case, if the VCT version is changed, the current channel is updated (S125). If the VCT version is not changed, it is determined whether the next VCT is (S130).

Next VCT 인지를 판단하는 방법은 VCT의 Current_next_indicator를 통해서 판단하는 데, Current_next_indicator 가 1이면 Current VCT이고, Current_next_indicator 가 0이면 Next VCT이다. The method of determining whether the Next VCT is determined by the Current_next_indicator of the VCT. If the Current_next_indicator is 1, it is the Current VCT.

여기서, Next VCT이면 Current VCT가 존재하는 지 판단(S140)하여 Current VCT가 존재하면, Next VCT와 Current VCT를 비교하여 Next VCT와 Current VCT가 일치하는 지를 판단(S150)한다. Here, in the case of Next VCT, it is determined whether a Current VCT exists (S140). If a Current VCT exists, it is determined whether the Next VCT and the Current VCT match by comparing the Next VCT and the Current VCT (S150).

이는 Next VCT와 Current VCT 전체를 비교하는 것이 아니라, Next VCT와 Current VCT의 각각에 정의된 num_channels_in_section field 와 channel_TSID를 이용한다. This does not compare the entire Next VCT and the Current VCT, but uses the num_channels_in_section field and channel_TSID defined in each of the Next VCT and the Current VCT.

즉, Next VCT와 Current VCT의 각각에 정의된 num_channels_in_section field를 체크하여 num_channels_in_section field가 서로 다르면 채널 개수가 다른 것을 의미하게 되고, 이는 채널 개수의 변경을 의미하게 된다. That is, if the num_channels_in_section field defined in each of the Next VCT and the Current VCT is different from each other and the num_channels_in_section field is different from each other, this means that the number of channels is different, which means that the number of channels is changed.

따라서, 현재 사용자가 시청하고 있는 채널 Current VCT의 channel_TSID(Transport Stream Identifier)와 Next VCT의 각 channel_TSID를 비교 (S160)하여 Current VCT의 channel_TSID와 Next VCT의 각 channel_TSID가 일치하는 지를 판단한다. Therefore, the channel_TSID (Transport Stream Identifier) of the channel Current VCT currently viewed by the user and each channel_TSID of the Next VCT are compared (S160) to determine whether the channel_TSID of the Current VCT and each channel_TSID of the Next VCT match.

이 경우, Next VCT의 channel_TSID가 Current VCT의 channel_TSID와 상이하면 채널이 변경 즉, 추가 또는 삭제된 것이다. In this case, if the channel_TSID of the Next VCT is different from the channel_TSID of the Current VCT, the channel is changed, that is, added or deleted.

예를 들어, Next VCT의 channel_TSID에 있고 Current VCT의 channel_TSID에 없다면, 해당 채널은 삭제되는 것이다.For example, if the channel_TSID of the Next VCT is not present and the channel_TSID of the Current VCT, the channel is deleted.

이와 같이, Next VCT의 channel_TSID가 Current VCT의 channel_TSID와 상이하여 추가 또는 삭제되는 경우에는 이를 OSD(On Screen Display)를 통해 사용자에게 경고(S170)한다.As such, when the channel_TSID of the Next VCT is added or deleted differently from the channel_TSID of the Current VCT, the user is warned through the On Screen Display (OSD) (S170).

전술한 바와 같이, 본 발명의 실시예에 따른 채널정보 관리방법은 Current VCT와 Next VCT를 비교하여 이를 통해 채널의 추가 또는 삭제를 판단하여 이를 사용자에게 경고함으로써 시청하는 프로그램에 대한 사용자의 혼선을 줄일 수 있다. As described above, the channel information management method according to an embodiment of the present invention reduces the user's confusion about the program to watch by comparing the current VCT and Next VCT to determine the addition or deletion of the channel through this and warn the user. Can be.

본 발명은 전술한 실시예에 국한되지 않고 본 발명의 기술사상이 허용하는 범위 내에서 다양하게 변형하여 실시할 수 있다. The present invention is not limited to the above-described embodiments and can be carried out in various modifications within the scope of the technical idea of the present invention.

이와 같이 구성되는 본 발명에 따르면, Current VCT와 Next VCT를 통해 변경되는 마이너 채널을 판단하여 이를 사용자에게 경고하여 사용자가 채널의 변경상황을 파악할 수 있다.According to the present invention configured as described above, by determining the minor channel that is changed through the Current VCT and Next VCT and alerts the user, the user can grasp the change state of the channel.

Claims (3)

디지털 TV의 방송 채널에서 채널이 선택되면, PSIP를 파싱하여 추출된 VCT를 분석하여 상기 VCT를 통해 채널정보를 관리하는 채널정보 관리방법에 있어서, In the channel information management method for managing the channel information through the VCT by analyzing the extracted VCT by parsing the PSIP when a channel is selected in the broadcast channel of the digital TV, 상기 채널이 선택되면, 상기 VCT에 Next VCT가 존재하는 지를 판단하는 단계;If the channel is selected, determining whether a Next VCT exists in the VCT; 상기 Next VCT가 존재하면 상기 Next VCT와 Current VCT를 비교하여 상기 선택된 채널의 채널 정보가 추가 또는 삭제되는 지를 판단하는 단계; 및Comparing the Next VCT with the Current VCT when the Next VCT exists, and determining whether channel information of the selected channel is added or deleted; And 상기 채널 정보가 추가 또는 삭제되면, 상기 채널 정보가 추가 또는 삭제되었음을 OSD(On Screen Display)를 통해 경고하는 단계를 포함하여 이루어지는 것을 특징으로 하는 채널정보 관리방법.And if the channel information is added or deleted, warning through the On Screen Display (OSD) that the channel information has been added or deleted. 제 1 항에 있어서, 상기 채널 정보가 추가 또는 삭제되는 지는 상기 Next VCT와 Current VCT에 각각 정의된 num_channels_in_section를 비교하여 상기 num_channels_in_section가 상이하면, 상기 Next VCT와 Current VCT에 각각 정의된 Channel_TSID를 비교하여 판단하는 것을 특징으로 하는 채널정보 관리방법.The method of claim 1, wherein the addition or deletion of the channel information is determined by comparing num_channels_in_sections defined in the Next VCT and the Current VCT, respectively, and comparing the Channel_TSIDs defined in the Next VCT and the Current VCT, respectively. Channel information management method, characterized in that. 삭제delete
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