1244870 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種數位電視機與使用虛擬頻道表播放廣播信號之方 法。 【先前技術】 通常，此用於數位電視廣播之先進電視系統委員會（以下稱為ATSC)標 準之節目與系統資訊協定（以下稱為PSIP)包括虛擬頻道表(VCT)。在1997 年12月23日所公告之ATSC文件A/65: “用於地面廣播與電纜廣播之節目 與系統資訊協定”在此併入作為參考用於各種目的，如同在此完整揭示一 般0 此節目與系統資訊協定(PSIP)典型地亦包括：電子節目導引（沉p)與 系統資§fl(SI)。此PSIP被界定為用於地面與電纜數位電視廣播之π%標 準之協定，其藉由使用移動影像專家組—2(MPEG一2 ; us〇/IEC丨洲以一丨）系統， 以分析經編碼訊息，因此提供有關廣播節目之各種資訊(請參考於丨⑽了年 12月23日公告之ATSC文件A/65)。 換句話說’此PSIP以MPEG-2視訊格式與AC-3音訊格式傳送與接收音 訊/視訊資料’且包括數個表祕在各錢f台之頻道上傳送資訊，以及在 各頻道上傳送節目之資訊。此PSIP之主要魏為職於所想要頻道執行音 訊與視訊贿，以及細外魏域行餘廣鄉目之電子節目服務。 此用於頻道選擇之頻道資訊、以及用於音訊與視訊資料接收之封包辨 識⑽免《包含於虛_縣⑽)_，錢此在細紅之廣播節目 1244870 上之電子節目服務資訊是包括在事件資訊表（EIT)中。而且，PSIP包含：用 於時間資訊之系統時間表（STT);用於傳輸節目收視率之區域與組織之資訊 之枚視率區絲衝），用於提供關於頻道與廣播節目額外麟之延伸文件 表（ETT);以及用於管理上述各表與封包辨識(pID)之版本之主要導引表 (MGT)。此等表以稱為區段(section)之資料單元傳送。π，所有此等表具 有一或多個區段作為基本單元。 作為例子，可以將虛擬頻道表分割成256個區段。單一區段可以包含 在數個虛麵道上之資訊，但麟單_虛_叙:#訊可能無法散佈於兩 個或更多之區段上。 第1圖說明用於地面廣播之-般虛擬頻道表之位元流句法(syntax)， 其在上述ATSC文件A/65中已經說明過。此一般虛擬頻道表包括：傳輸流 辨識器、主要継號碼、次·道號碼、短頻道名稱、載波鮮、節目號 碼等’以及包含在其描述器中之額外資訊。 請參考第1圖，此虛擬頻道表具有：表辨識欄位“〇XC8,，，與用於虛 擬頻這表之封包辨識(PID)值“OxlFFB”。此版本號碼攔位“版本—號碼” 代表虛擬頻道表之版本值，區段號碼攔位“區段_號碼，，代表相對應之區段 號碼，最後區段號碼欄位“最後-區段-號碼，，代表虛擬頻道表之最後區段 號碼以及區段號碼頻道欄位區段-中-頻道-號碼”代表在虛擬頻道表之 區段中所存在所有虛擬頻道之數目。 在for 一 loop”中之語句（statement)中之短名稱攔位“節目—名稱” 代表虛擬頻道之名稱，以及主要頻道號碼攔位“主要—頻道_號碼，，代表界 1244870 疋於上述語句中虛擬頻道中之主要頻道號碼。各虛擬頻道號碼各與主要以 及-人要頻道號碼有關，以及此主要以及次要頻道號碼作用為使用者參考號 碼而用於相對應之虛擬頻道。換句話說，此虛擬頻道表經由“for J00p，， 浯句而裝载用於各虛擬頻道之資料。 此節目號碼欄位“節目-號碼，，包括用於連接虛擬頻道之資訊，而界定 MPEG-2節目關聯表(pAT)與節目對應表(pMT)，其對應於在節目關聯表與節 目對應表巾之節目號碼。在此情形中，節目關聯表界定每個節目號碼之節 目成份，即，顯示傳輸此節目對應表之傳輸封包之封包辨識。此節目對應 表界定:在傳輸封包之封包賴上之表（list)與其_資訊，此封包傳輪： 構成此節目之節目辨識號碼以及視訊與音訊信號之位元流。 來源辨識欄位“來源-辨識，，代表連接至相對應虛擬頻道之節目來 源。在此情形中，此來源代表特定來源，例如：影像、文件、資料或聲音。 此來源辨識攔位“來源一辨識，，在傳輸此虛擬頻道表之傳輸流中具有獨特 值。此描述器長度攔位“描述器—長度，，纟示相對應虛擬頻道之描述器之整 個長度，以及此額外描述器長度欄位“額夕卜—描述器—長度”絲此虛擬頻王 逼表之所有額外描述器之整個長度。 弟5圖顯示根據ATSC標準之用於PSIP表之典型描述器之表。 第2圖說明藉由使用在廣播電台中四個虛擬頻道之執行排程廣播之々 作為例子，假設此在第2圖中所示之排程廣播是經由在任何廣播電· 中之四個虛擬頻道5H、5卜2、5卜3、以及51—8執行，以及此所料= 擬頻道表是由單一區段構成。 1244870 如果目前時間是20:15，則系統時間表傳送此目前時間資訊。在此情形 中，將在目前時間（20:15)播放節目之頻道51-丨與51—3界定為“活性 (active)頻道”。 在另-方面，頻道51-2在目前時間並未播放節目，且將在隔天播放節 目，以及頻道51-8將在下-個〇6:〇0播放節目。在此情形中，將此等在目 前時間（20·· 15)並未播放節目且將在將來播放節目之頻道51—2與5i—8界定 為“非活性（inactive)頻道”。 因此，根據時間中任何點，各頻道可以為活性頻道或非活性頻道。 在PSIP中，此虛擬頻道表應如同標準所要求包括活性頻道，以及如同 標準所要求亦包括非活性頻道，用於執行電子節目導引服務。 因此，在目前時間（20:15)虛擬頻道表可以包括在所有頻道仏丄、 5卜2、51—3、以及51 一8上之資訊’並且因歧位t視廣播接收器或數位電 纜廣播接收器接收虛擬頻道表’因而提供頻道選擇資·電視觀賞者。 然而’如同於第丄圖中所示，根據ATSC文件A/65之虛擬頻道表之位 元流句法，此等數位電視廣播接收H或數位廣播無器，在當分析虛 擬頻道表時，無法在活性頻道(例如：頻道51_m51_3)與非活性頻道(例如： 頻道51-2與51-8)之間區別。 因此，因為此從廣播電台傳送用於提供電子節目導引之在非活性頻道 上之魏’電視之觀賞者會看到黑色螢幕晝面。此黑色螢幕畫面意味者：當 在目前時間選擇未播放之非活性頻道時，在螢幕上顯示黑色背景顏色。: 方面由在數位電視廣播接收器或數位電境廣播接收器之營幕上顯示 1244870 力此*在黑色背景顏色螢幕上顯示“未提供服務，’之文字訊息。作為例 子’如果此電禎^ 者在硯看頻道51-1時，以頻道調上鍵選擇頻道51-2， 則不會顯示音訊與視崎料，@道51_2為細蝴道，以致於在螢幕 上顯示黑色背景顏色。 上述問題在當數位電視廣播接收賊數位賴·接收器成為廣受歡 ，會對電視觀賞者造成許多不便。 【發明内容】 因此’本發暇_於虛擬頻道表，其實質上避免由於習知技術之缺 點與限制所造成之-或多個問題。 本發明之目的為提供_種用於廣播協定之虛擬頻道表，以及使用此表 之廣播方}其切由此廣播接收器從所接收之頻道在活性與非活性頻道 間辨識與區別。 本發明之目的為提供於錢協定之虛_道表，贼使用此表 之廣播方法，其能触速地僅顯示在目前時間所播出之頻道。 本發明其他之特性與優點將在以下之描射·，且其—部份將由此 項描述而為u或可以藉由實施本發明而得知。本發明之目的與其他優 點將由在此所撰寫之說明射請專利範圍以及所關式中所特別指出之結 構實現與獲得。 根據本發明之-觀點’此數位電視機包括：接收裝置，用於接收包括 虛擬頻道表之數位廣播信號，此表包括預先界定之攔位，其顯示此相對應 之頻道為非活性頻道；節目與系統細PSIP)解端，用於偵測在虛擬頻 10 1244870 道表中喊界定之資料欄位，以及用於輸出—輸出其顯示此相對應頻道是 否為非活性。此數位電視機更包括控繼，驗當使时選擇此頻道且碟 定此頻道為非活性時，接收PSIP解碼器之輪出、以制於控制相對應頻道 之顯示。 根據本發明之另-觀點，此顧在廣播缺中虛擬頻道表之廣播方法 包括以下步歡設定在虛擬頻道表巾縣界定:雜攔位之值，以顯示其相 對應之虛擬頻道為活性或非活性頻道；將此趣頻道轉送至接收器；以 及藉由分析虛擬頻道表，而根據在虛擬頻道表中所界定之預先界定資料搁 位，在接收器決定此相對應之虛擬頻道是否為非活性。 根據本發明之另-觀點，此在數位電視機中控制非活性頻道顯示之方 法包括以下步驟:接收包括虛擬舰表之數位廣播信號；分析此虛擬頻道 表；以及讀取在此經分析虛擬頻道表中預先界定資料攔位之值，以決定此 相對應虛擬頻道為活性或非活性頻道。此方法更包括步驟，在當確定此虛 擬頻道為非活性且由使用者選擇時，控制此虛擬頻道之顯示。 應瞭解以上一般性說明以及以下詳細描述為典範與說明，且其用咅為 提供所主張本發明之進一步說明。 本說明書所附之圖式，其被包括入本說明書中以提供本發明進一步之 瞭解，並且被合併入以構成本說明書之一部份以說明本發明之實施例，並 且與此描述一起用以說明本發明之原理。 【實施方式】 現在參考本發明較佳實施例，而在所附圖式中說明其例。 1244870 根據本發明’於廣播協定之虛擬親表包括辨靖訊，其能夠辨 識且允許纽格樹_聊嫩細聰。嶋側，即，廣 播電台將具有辨識資訊之虛觸道表傳送至接收ϋ。各接《將所接收之 虛擬頻道表分析，_定此目_擇之_活,_與細生頻道。 此辨識魏’其在PSIP之鮮下可靖識且麟細续細生頻道 間區別，是包括於上述協定之虛擬頻道表之至少_欄位中，以致於只將目 月播放之活性頻道顯示給電視觀賞者。 以下將參考第3與4圖詳細說明根據本發明··虛擬頻道表與方法之較_ 佳實施例。 為了此數位電視機與數位電境廣播接收器能夠分析此虛擬頻道表，以 及因此能夠決定目前所選擇頻道為活性頻道或非活性頻道，所以可以修正 此虛擬頻道表之位元流句法。 例如，此等頻道5卜2與51-8在目前時間20:15並未播放但在將來會 播放之事實，應在此數位電視機與數位廣播接收器中被確認。在較佳 實施例中，此能夠辨識非活性頻道之辨識資訊是包括於：節目號碼攔位 φ “節目-號碼”、服務位置描述器攔位“服務_位置—描述器，，及域包括於 虛擬頻道表之位元流句法中之其他保留欄位。 第3圖說明根據本發明實施例之用於地面廣播之虛擬頻道表之位元流 句法。為了顯示此相對應頻道非活性頻道，將此節目號碼攔位“節目一號 碼”之值設定為“0”。以及，由於目前服務位置描述器沒有音訊與視訊信 號，因此將此服務位置描述器“服務—位置-描述器，，之數目元件欄位“數 12 1244870 目元件之值設定為〇 。而且，或者替代式地，以顯示此相對應頻道 為非活性頻道，而此服務位置描述器“服務—位置—描述器，，（請參考第5圖 並未包含於虛擬頻這表中。換句話說，此在此數位電視機與數位電纜廣拌 接收器中，只有在當此相對應頻道為活性頻道之情形時，此服務位置描述 為搁位才應被包括於虛擬頻道表中。然而，如果此相對應頻道為非活性頻 道’則此服務位置描述欄位並未包括於虛擬頻道表中。 在較佳實施例中，為了以更明顯方式確認此相對應頻道為非活性頻道 之事實，給定此用於各頻道6個位元保留欄位之1個位元，以界定顯示此 非活性頻道之旗標（flag)。在較佳實施例中，給定此在“f〇rj〇〇p”語句 中介於隱細位“誠”與服務形式攔位“服務—型式”聰㈣位中之1 位兀，以界定顯示此非活性頻道之旗標。例如，在此旗標顯示為非活性頻 道為“1”之情形中，此相對應頻道為活性頻道，以及如果此旗標為“〇，，， 則相對應頻道為非活性頻道。 在較佳實施例中，可以添加上述三種情形作為在文件人/65中之要求， 可以將任何所有三種情形添加至文件A/65中。 如同以上提及，由於此在非活性頻道上之資訊是包括於虛擬頻道表 中此數值電視機可以僅藉由分析虛擬頻道表，而確定目前所接收之虛擬 頻道是活性頻道或非活性頻道。例如，如果在此虛擬頻道表中之節目號碼 攔位即目—號石馬，，之值為“〇”，如果藉由給定在保留搁位中預先確定位 兀而界定在非活性頻道上資訊之值為T ，或者如果服務位置描述器搁位 服務-位置-描述器，，並未包括於虛擬頻道表中，則此等目前傳送之虛擬 1244870 頻道表之㈣流句法中所界定之主要頻道號碼攔位“主要—頻道戈碼，，與— 次要頻道號·位“次要-麟-號碼”，決定此目前趣観騎活性頻 道。 · 在另-方面’如果在以上過程下確定為非活性頻道，則此數位電視機 在當在借助㈣道調上鍵與頻_下猶触賴時，此触電視機可以 跳過此非活性頻道，而並未將其顯示於螢幕上。 第4圖說明用於根據本發明另一實施例之電繞廣播之虛擬頻道表之位 元流句法。如同所顯示’可以與上述相同方式將虛擬頻道表應用至賴廣φ 播。 第6圖顯示數位電視⑽)機之較佳實施例之方塊圖。解調變器㈣） 在修正頻道錯誤後，將RF信號轉換成基本頻帶信號。然後，傳輸解碼器（6〇2) 將例如··音m psip等數個信號分開，且將音訊與視訊流輸出至音 鱗碼器（603)與視訊解碼器（604)，以及將PSIP資料流輸出至psip解碼 器（605)。此PSIP解碼器將PSIP資料流解碼，用於將psip資料儲存於psip 貝料庫（609)中，以及提供輸出至使用者介面（UI)模組（615)(即，系統主區鲁 段）用於顯示活性節目或EPG顯示。 現在將說明PSIP解碼器（605)。此PSIP分析器（6〇7)分析此PSIP表 (VCT、EIT、STT、RRT、ETT、MGT)，且將此結果輸出至PSIp主要區段（_)。 可以藉由分析結果而在活性與非活性頻道間區別。區段過濾器（6〇6)從由傳 輸解碼益（602)所輸出psip資料將所須之區段分開，以及將所須資料輸出 至PSIP分析器（607)。 14 1244870 psip管理器（608)控制PSIP資料庫（DB)(6〇9)。此psip主要區段（61〇) 控制傳輸解碼器（602)用於接收PSIP資料表。PSIP應用節目介面（ΑΡΙ)(611) 提供輸出以允許外部模組存取psipDB(6〇9)。此頻道管理器（612)與EpG任 務元件（613)是由頻道鍵及/或EPG鍵之使用者選擇信號（619)操作。此外， 此數位電視(DTV)機尚包括：〇sd控制（614)、微控制器（616)、擴音器（617)、 以及顯不處理H(618)。如果使用者選翻道鍵，齡頻道管職輸出頻道 改變信號至解調變ϋ(6()1)與傳輸解碼器（圆。在此情形巾，此使用者可 以看到活性頻道。如果此使用者選擇EpG鍵，則此EpG任務元件（6⑶控制 PSIP解碼為（6〇8)以支持EPG顯示模式。在此情形中，使用者可以看到在 EPG螢幕中所顯示之活性與非活性頻道。 第7圖顯不藉由使用根據本發明實施例之psip之頻道轉換。在第7圖 中之裝置包括：調整器（7〇1)、傳輸封包(Tp)(7〇2)、AC_3音訊解石馬器 σ〇3)、MPEG-2視訊解碼器（704)、psip表(7〇5)、節目系統資訊（資料)傳 輸封包(706)、PSIP資料庫（頻道圖與哪資料)(7〇7)、節目關聯表 (PAT)(7〇8)、節目對應表㈣)（7〇9)、以及虛擬頻道68-1服務⑺〇)。首1244870 IX. Description of the invention: [Technical field to which the invention belongs] The present invention relates to a digital television and a method for playing broadcast signals using a virtual channel table. [Prior Art] Generally, the Advanced Television Systems Committee (hereinafter referred to as ATSC) standard for digital television broadcasting has a program and system information protocol (hereinafter referred to as PSIP) including a virtual channel table (VCT). ATSC Document A / 65: "Programme and System Information Agreement for Terrestrial and Cable Broadcasting" published on December 23, 1997 is hereby incorporated by reference for various purposes, as if fully disclosed here. 0 This The Program and System Information Protocol (PSIP) typically also includes: Electronic Program Guide (SIP) and System Information §fl (SI). This PSIP is defined as a π% standard agreement for terrestrial and cable digital TV broadcasting. It uses the Moving Picture Experts Group-2 (MPEG-2; us〇 / IEC 丨 zhouyi 丨) system to analyze the Encoded messages, thus providing a variety of information about broadcast programs (please refer to ATSC Document A / 65, published on December 23, 1999). In other words, 'This PSIP sends and receives audio / video data in MPEG-2 video format and AC-3 audio format' and includes several watch secrets to transmit information on channels of each channel and programs on each channel. Information. The main Wei of this PSIP is to perform audio and video bribes on the desired channels, as well as electronic program services for Wei Guangxing Yu Guangxiang. This channel information for channel selection, and packet identification for audio and video data reception (excluded in "Virtual_County") _, the electronic program service information of Qian This on the fine red radio program 1244870 is included in Event Information Sheet (EIT). Moreover, the PSIP includes: a system timetable (STT) for time information; a viewing area for transmitting program ratings and organization information; and an additional extension for channels and broadcast programs. Document Table (ETT); and Main Guide Table (MGT) for managing the above tables and the version of the packet identification (pID). These tables are transmitted in units of data called sections. π, all these watches have one or more sections as the basic unit. As an example, the virtual channel table may be divided into 256 sections. A single segment can contain information on several virtual planes, but the Lin Dan_Virtual_Su: # message may not be spread across two or more sectors. FIG. 1 illustrates a bitstream syntax of a general virtual channel table for terrestrial broadcasting, which has been described in the aforementioned ATSC document A / 65. This general virtual channel table includes: a transport stream identifier, a primary channel number, a secondary channel number, a short channel name, a carrier frequency, a program number, etc. 'and additional information contained in its descriptor. Please refer to Fig. 1. This virtual channel table has a table identification field "〇XC8 ,," and a packet identification (PID) value "OxlFFB" used for the table of the virtual frequency. This version number block "version-number" Represents the version value of the virtual channel table. The section number block "section_number" represents the corresponding section number. The last section number field "last-section-number" represents the last section of the virtual channel table. "Segment Number and Section Number Channel Field Section-Medium-Channel-Number" represents the number of all virtual channels existing in the section of the virtual channel table. The short name block "program-name" in the statement in "for a loop" represents the name of the virtual channel, and the main channel number block "main-channel_number," represents the world 1244870. In the above statement The main channel number in the virtual channel. Each virtual channel number is related to the primary and secondary channel numbers, and the primary and secondary channel numbers are used as user reference numbers for corresponding virtual channels. In other words, the virtual channel table is loaded with data for each virtual channel via "for J00p ,, Haiku. This program number field" program-number, including information for connecting virtual channels, defines MPEG -2 program association table (pAT) and program correspondence table (pMT), which correspond to the program numbers in the program association table and the program correspondence table. In this case, the program association table defines the program component of each program number, that is, the packet identification showing the transmission packet transmitting the program correspondence table. This program correspondence table defines: the list and the information on the packet of the transmission packet. This packet transfer wheel: the program identification number and the bit stream of the video and audio signals that constitute this program. The source identification field "Source-Identification" represents the source of the program connected to the corresponding virtual channel. In this case, this source represents a specific source, such as: image, file, data or sound. This source identification block "Source One Identification, has a unique value in the transport stream transmitting this virtual channel table. This descriptor length block "Descriptor-Length" indicates the entire length of the corresponding descriptor of the virtual channel, and the extra descriptor length field "Forehead-Descriptor-Length" is the virtual frequency. The entire length of all additional descriptors of the table. Figure 5 shows a table of a typical descriptor for PSIP tables according to the ATSC standard. Figure 2 illustrates the use of four virtual channels in a broadcasting station to perform scheduled broadcasting. 々 As an example, suppose that the scheduled broadcast shown in Figure 2 is performed via the four virtual channels 5H, 5B2, 5B3, and 51-8 in any broadcast channel, and as expected = The intended channel list is composed of a single section. 1244870 If the current time is 20:15, the system schedule transmits this current time information. In this case, the channel 51- of the program will be played at the current time (20:15)丨 and 51-3 are defined as "active channels." On the other hand, channel 51-2 is not currently playing a program, and the program will be played the next day, and channel 51-8 will be the next one. The program is played at 6:00:00. In this case, Channels 51-2 and 5i-8, which have not broadcast a program at the current time (20 ·· 15), are defined as "inactive channels". Therefore, according to any point in time, each channel can Active or inactive channels. In PSIP, this virtual channel list should include active channels as required by the standard, and inactive channels as required by the standard, to perform electronic program guidance services. Therefore, at the current time (20:15) The virtual channel list can include information on all channels 5, 卜 2, 51-3, and 51-8, and depending on the location, depending on whether the broadcast receiver or digital cable broadcast receiver receives the virtual channel The table 'thus provides channel selection information for TV viewers. However,' as shown in the figure below, according to the bit stream syntax of the virtual channel table of ATSC file A / 65, these digital TV broadcasts receive H or digital broadcasts without When analyzing the virtual channel table, it cannot distinguish between active channels (for example: channel 51_m51_3) and inactive channels (for example: channels 51-2 and 51-8). Therefore, since Viewers of Wei ’TV on inactive channels that are used to provide electronic program guidance will see a black screen daytime. This black screen means: When an inactive channel is selected at the current time, Display the black background color on the screen .: The area is displayed by the 1244870 on the screen of the digital TV broadcast receiver or the digital radio receiver. * The text message "No service is provided," is displayed on the black background color screen. As an example, 'If this person is watching channel 51-1 and selects channel 51-2 by pressing the channel up key, the audio and video materials will not be displayed. @ 道 51_2 is a thin butterfly channel, so that The screen displays a black background color. The above-mentioned problems caused a lot of inconvenience to TV viewers when the digital television broadcast receiving thief and the digital receiver became popular. [Summary of the Invention] Therefore, the present invention is a virtual channel table, which substantially avoids the problems or problems caused by the shortcomings and limitations of the conventional technology. An object of the present invention is to provide a virtual channel list for a broadcast protocol, and a broadcaster using the list, so that the broadcast receiver can identify and distinguish between active and inactive channels from the received channels. The purpose of the present invention is to provide a virtual channel table in a money agreement. A thief uses the broadcasting method of this table, which can quickly display only the channels broadcast at the current time. Other characteristics and advantages of the present invention will be described below, and some of them will be described by this item as u or can be learned by implementing the present invention. The objects and other advantages of the present invention will be realized and obtained by the structure of the patents and the structures specifically pointed out in the descriptions written here. According to the aspect of the present invention, the digital television includes: a receiving device for receiving a digital broadcasting signal including a virtual channel table, the table including a predefined block, which shows that the corresponding channel is an inactive channel; a program And system fine PSIP), used to detect the data fields defined in the virtual frequency 10 1244870 channel table, and used to output-output which shows whether the corresponding channel is inactive. The digital TV also includes control relay. When this channel is selected and the channel is inactive, the PSIP decoder will be rotated out to control the display of the corresponding channel. According to another aspect of the present invention, the broadcasting method of the virtual channel table in the absence of broadcasting includes the following steps: setting the virtual channel table to define: the value of the miscellaneous block to show that the corresponding virtual channel is active or Inactive channels; transfer this fun channel to the receiver; and by analyzing the virtual channel table, based on the predefined data shelving defined in the virtual channel table, the receiver determines whether the corresponding virtual channel is non-active active. According to another aspect of the present invention, the method for controlling inactive channel display in a digital television includes the steps of: receiving a digital broadcast signal including a virtual ship list; analyzing the virtual channel list; and reading the analyzed virtual channel here The value of the data block is predefined in the table to determine whether the corresponding virtual channel is an active or inactive channel. The method further includes the step of controlling the display of the virtual channel when it is determined that the virtual channel is inactive and selected by a user. It should be understood that the above general description and the following detailed description are exemplary and explanatory, and are used to provide further explanation of the claimed invention. The drawings attached to this specification are included in this specification to provide further understanding of the invention, and are incorporated to form a part of this specification to illustrate embodiments of the invention, and are used in conjunction with this description. The principle of the present invention will be explained. [Embodiment] Referring now to a preferred embodiment of the present invention, an example will be described in the attached drawings. 1244870 The virtual parent table in the broadcast protocol according to the invention ' includes identifying Jingxun, which is able to recognize and allow the Newg tree_Liao Nen Xi Cong. On the other hand, the broadcasting station transmits a virtual touch channel table with identification information to the receiving station. Each of them will analyze the received virtual channel list, _determining this item_choose of _live, _ and fine health channel. This identification of Wei ', which can be distinguished by the new PSIP, and the detailed differences between the channels, is included in at least the _ field of the virtual channel list of the above agreement, so that only the active channels broadcast in the month are displayed To TV viewers. Hereinafter, a preferred embodiment of the virtual channel table and method according to the present invention will be described in detail with reference to FIGS. 3 and 4. In order for the digital television and the digital radio broadcast receiver to analyze the virtual channel table and thus determine whether the currently selected channel is an active channel or an inactive channel, the bit stream syntax of the virtual channel table can be modified. For example, the fact that these channels 5 and 2 and 51-8 are not broadcast at 20:15 at the present time but will be broadcast in the future should be confirmed in this digital television and digital broadcast receiver. In a preferred embodiment, the identification information capable of identifying an inactive channel is included in: a program number block φ “program-number”, a service position descriptor block “service_location-descriptor”, and a domain included in Other reserved fields in the bit stream syntax of the virtual channel table. Fig. 3 illustrates the bit stream syntax of the virtual channel table for terrestrial broadcasting according to an embodiment of the present invention. In order to display this corresponding channel inactive channel, The value of the program number block "program one number" is set to "0". Also, since the service location descriptor currently has no audio and video signals, the number of the service location descriptor "service-location-descriptor" is The component field "Number 12 1244870 mesh component value is set to 0. And, or alternatively, to display this corresponding channel as an inactive channel, and this service location descriptor" Service-Location-Descriptor, "(Please Refer to Figure 5 which is not included in the table of virtual frequencies. In other words, this digital television and digital cable receiver are only used when the corresponding channel In the case of an active channel, the service location description should be included in the virtual channel table as a stall. However, if the corresponding channel is an inactive channel, then the service location description field is not included in the virtual channel table. In a preferred embodiment, in order to confirm the fact that the corresponding channel is an inactive channel in a more obvious manner, one bit of the 6-bit reserved field for each channel is given to define and display the non-active channel. Flag of the active channel. In a preferred embodiment, given that this is between the implicit and honest bits of "sincerity" and the service form and the "service-type" smart bit in the "f〇rj〇〇p" sentence. 1 to define the flag that displays this inactive channel. For example, in the case where this flag is displayed as "1", the corresponding channel is the active channel, and if the flag is "〇 ,,, the corresponding channel is an inactive channel. In a preferred embodiment, the above three scenarios can be added as a requirement in Documenter / 65, and any of the three scenarios can be added to Document A / 65. As mentioned above, The information on the inactive channels is included in the virtual channel table. The numerical television can determine whether the currently received virtual channel is an active channel or an inactive channel only by analyzing the virtual channel table. For example, if here The program number block in the virtual channel table is No.-No. Shima. The value is "0". If given a predetermined position in the reserved shelf, the value of the information on the inactive channel is T , Or if the Service Location Descriptor Shelf Service-Location-Descriptor is not included in the virtual channel table, the main channel number block defined in the stream syntax of the currently transmitted virtual 1244870 channel table " Primary—channel code, and—secondary channel number · bit “secondary-lin-number”, determines the current active channel for fun riding. · On the other side, if it is determined as an inactive channel in the above process, Then, when the digital TV is still in contact with the channel up key and frequency, the touch TV can skip this inactive channel without displaying it on the screen. FIG. 4 illustrates a bit stream syntax of a virtual channel table for a wraparound broadcast according to another embodiment of the present invention. As shown ', the virtual channel list can be applied to Lai Guang φ broadcast in the same manner as described above. FIG. 6 shows a block diagram of a preferred embodiment of a digital television ⑽) machine. Demodulator ㈣) After correcting the channel error, convert the RF signal into a basic band signal. Then, the transmission decoder (602) separates several signals such as audio m psip, and outputs the audio and video streams to the scale encoder (603) and video decoder (604), and the PSIP data The stream is output to a psip decoder (605). This PSIP decoder decodes the PSIP data stream, which is used to store the psip data in the psip shell library (609) and provide output to the user interface (UI) module (615) (that is, the main section of the system) Used to display active programs or EPG displays. The PSIP decoder (605) will now be explained. The PSIP analyzer (607) analyzes the PSIP table (VCT, EIT, STT, RRT, ETT, MGT), and outputs the result to the PSIp main section (_). It is possible to distinguish between active and inactive channels by analyzing the results. The segment filter (606) separates the required segments from the psip data output by the transmission decoding benefit (602), and outputs the required data to the PSIP analyzer (607). 14 1244870 psip manager (608) controls the PSIP database (DB) (609). This main part of the ppsi (61) controls the transmission decoder (602) for receiving the PSIP data sheet. PSIP Application Program Interface (API) (611) provides output to allow external modules to access psipDB (609). The channel manager (612) and the EpG task element (613) are operated by a user selection signal (619) of a channel key and / or an EPG key. In addition, this digital television (DTV) machine also includes: osd control (614), microcontroller (616), loudspeaker (617), and display processing H (618). If the user selects the turn button, the channel manager outputs the channel change signal to the demodulation signal (6 () 1) and the transmission decoder (round. In this case, the user can see the active channel. If this If the user selects the EpG key, the EpG mission component (6CD controls PSIP decoding to (608)) to support the EPG display mode. In this case, the user can see the active and inactive channels displayed on the EPG screen Figure 7 shows the channel switching without using the psip according to the embodiment of the present invention. The devices in Figure 7 include: a regulator (701), a transmission packet (TP) (702), and AC_3 audio Calculus horse σ〇3), MPEG-2 video decoder (704), psip table (705), program system information (data) transmission packet (706), PSIP database (channel map and which data) ( (0077), program association table (PAT) (708), program correspondence table (7) (708), and virtual channel 68-1 service (0). first
先，由電視使用者選擇頻道 如：音訊、視訊、以及PSTFFirst, TV users choose channels such as: audio, video, and PSTF
k擇頻這。且此傳輸解碼器（602)準備接收許多信號，例 以及卿傳輸封包。其次，此PSIP解碼器（605)將PID _x圃設定於傳輸解碼器⑽）中，以選擇psip之地面虛擬頻道表 (而），以及取得用於活性虛擬頻道之音訊與視訊⑽)piD值（非活性之虛k selects this. And this transmission decoder (602) is ready to receive many signals, such as transmission packets. Secondly, the PSIP decoder (605) sets PID_x to the transmission decoder ⑽) to select the ground virtual channel table (and) of ppsi, and to obtain the audio and video 用于 pid value of the active virtual channel ( Inactivity
iLnj服粉之頻迢貧訊）。然後，pyp 將其發出至頻道管理器（612)，而使 解碼杰（605)製成用於psip之頻道圖， 1244870 用於調整活性頻道。然後，此頻道管理器（612)設定用於虛擬頻道號碼（68_υ 之A/V PID(視訊piD 〇χ21、音訊piD 〇χ24) ’此虛擬頻道號碼由電視使用 者選擇。此傳輪解碼器（6〇2)接收Α/ν傳輸封包，將其發出至A/y解碼器， 以及最後服務此DTV頻道。 第8圖為概要圖，其說明頻道調整與EPG顯示所使用之方式。其中， 包括：使用者介面主要區段⑽υ、使用者介面主要區段⑽2)、調整器 ⑽3)、頻道管理器⑽4)、ERG管理器（8〇5)、psip解碼器（_、以及頻 道圖（活性、非活性頻道)⑽7)。當調整頻道時，使用者只可以看到所顯示 之活性頻道’但當使用者接收EPG服務時，他/她看到EpG顯示，其包括所 有虛擬頻道，而包括非活性頻道。 如同由以上說明而為明顯’此用於廣播協定之虛擬頻道表與藉由使用 虛擬頻道表之廣播方法，可以包括辨識資訊，其在發射側中允許在活性與 非活性頻道_識無別，錢在難财分析虛_道表，因此決定目、 則所選擇之頻道為雌頻道或非活,_道。@此，當使_翻上鍵或頻 道調下鍵作頻道轉斜’可⑽過非活_道而不顯示，以致於電視觀賞 者可以方便之方式欣賞頻道轉換，而不會看到黑色螢幕。此外，可以傳送 虛擬頻道表，同時將非活性頻道包含於其中，因此使其可能提供更豐富之 電子節目服務。 對於熟習此技術之人士為明顯，可以對本發明作各種修正與變化，而 不會偏離本發明之精神與制。因此，翻意為本發明包括在所附申請專 利範圍及其等同物之範圍中之各種修正與變化。 1244870 【圖式簡單說明】 第1圖說日制於地面廣播之—般虛擬頻道表之位^流句法； 第2圖說明藉由使用在廣播電台中四個虛擬頻道以執行排程廣播之例； 第3圖說明祕根據本發明實施例之地面廣播之虛擬舰表之位元流句法; 第4圖說侧於根據本發明另—實施例之廣播之虛擬頻道表之位元流 句法； 第5圖為圖表其列示根據進階電視系統委員會標隸位電視廣播之節目與 系統資訊協定之各種描述器； 第6圖為方塊圖其說明根據本發明實施例之數位電視(DTV)機； 第7圖說明較佳實施過程，其處理用於顯示之活性與非活性頻道，以響應 使用者選擇鍵；以及 第8圖為流程圖說明較佳實施過程，其根據由使用者輸入之頻道或EPG選 擇鍵’以產生節目顯示或電子節目導引（EPG)之顯示。 【元件符號說明】 601 解調變器 602 傳輸解碼器 603 音訊解碼器 604 視訊解碼器 605 PSIP解碼器 606 區段過濾器 607 psip分析器 PSIP管理器 PSIP資料庫 PSIP主要區段 PSIP應用節目介面（API) 頻道管理器 EPG任務元件 OSD控制 使用者介面（UI)模組 微控制器 擴音器 顯示處理器 使用者選擇信號 調整器 傳輸封包(TP) AC-3音訊解碼器 MPEG-2視訊解碼器 PSIP 表 節目系統資訊（資料)傳輸封包 PSIP資料庫（頻道圖與ERG資料) 節目關聯表(PAT) 節目對應表(PMT) 18 1244870 710 虛擬頻道68-1服務 801 使用者介面主要區段 802 使用者介面主要區段 803 調整器 804 頻道管理器 805 ERG管理器 806 PSIP解碼器The frequency of iLnj serving fans is poor). Then, pyp sends it to the channel manager (612), and the decoder (605) is made into a channel map for psip, and 1244870 is used to adjust the active channel. Then, this channel manager (612) sets the virtual channel number (68_υ A / V PID (video piD 〇χ21, audio piD 〇χ24) 'This virtual channel number is selected by the TV user. This pass decoder ( 6〇2) Receive the A / ν transmission packet, send it to the A / y decoder, and finally serve this DTV channel. Figure 8 is a schematic diagram illustrating the method used for channel adjustment and EPG display. Among them, including : User interface main section ⑽υ, user interface main section ⑽2), adjuster ⑽3), channel manager ⑽4), ERG manager (805), ppsi decoder (_, and channel map (active, Inactive channels) ⑽7). When adjusting the channel, the user can only see the active channel displayed 'but when the user receives the EPG service, he / she sees the EpG display, which includes all virtual channels and includes inactive channels. As apparent from the above description, this virtual channel list for a broadcast protocol and a broadcasting method by using the virtual channel list may include identification information, which allows a distinction between active and inactive channels in the transmitting side, Qian Zaiqiang analyzes the virtual channel table, so it is decided that the selected channel is female channel or inactive channel. @This, when turning the _ up or channel down key for channel slanting, you can pass inactive _ channels without displaying, so that TV viewers can enjoy channel conversion in a convenient way without seeing the black screen . In addition, a virtual channel list can be transmitted while inactive channels are included therein, thus making it possible to provide a richer electronic program service. It is obvious to those skilled in the art that various modifications and changes can be made to the present invention without departing from the spirit and system of the present invention. Therefore, it is intended that the present invention include various modifications and changes included in the scope of the appended patents and their equivalents. 1244870 [Brief description of the diagram] Fig. 1 illustrates the general ^ stream syntax of a general virtual channel table, which is used for terrestrial broadcasting; Fig. 2 illustrates an example of performing scheduled broadcasting by using four virtual channels in a broadcasting station; FIG. 3 illustrates a bit stream syntax of a virtual ship list for terrestrial broadcasting according to an embodiment of the present invention; FIG. 4 illustrates a bit stream syntax of a virtual channel table for broadcasting according to another embodiment of the present invention; FIG. 5 FIG. 6 is a block diagram showing various descriptors of programs and system information protocols of television broadcasting according to the Advanced Television System Committee; FIG. 6 is a block diagram illustrating a digital television (DTV) machine according to an embodiment of the present invention; The figure illustrates the preferred implementation process, which processes active and inactive channels for display in response to user selection keys; and Figure 8 is a flowchart illustrating the preferred implementation process, which is selected based on the channel or EPG input by the user Press the key 'to generate a program display or an electronic program guide (EPG) display. [Description of component symbols] 601 demodulator 602 transmission decoder 603 audio decoder 604 video decoder 605 PSIP decoder 606 section filter 607 psip analyzer PSIP manager PSIP database PSIP main section PSIP application program interface ( API) Channel Manager EPG Mission Element OSD Control User Interface (UI) Module Microphone Loudspeaker Display Processor User Selection Signal Conditioner Transmission Packet (TP) AC-3 Audio Decoder MPEG-2 Video Decoder PSIP table program system information (data) transmission packet PSIP database (channel map and ERG data) program association table (PAT) program mapping table (PMT) 18 1244870 710 virtual channel 68-1 service 801 user interface main section 802 use User interface main section 803 adjuster 804 channel manager 805 ERG manager 806 PSIP decoder
807 頻道圖（活性、非活性頻道)807 channel map (active, inactive channels)
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