200408281 玖、發明說明 【發明所屬之技術領域】 本發明係槪括關於大眾傳播編碼訊號（例如數位化衛 星頻道）之解碼。確切而言，本發明係有關根據申請專利 範圍第1項和第7項之前言所述用於控制訊號解碼之系統 及方法。 【先前技術】 長期以來，在透過電子化大眾傳播媒體（例如收音機 廣播和地面電視）傳輸供一般使用之訊號方面，已有許多 爲人熟知的不同解決方案。除此之外，利用地球同步衛星 傳輸類似訊號的解決方案亦存在許久。近年來，透過各種 手段亦可利用不同類型的數位編碼方法來限制傳播訊號的 使用權；例如，訊號只能透過已獲得授權的接收器加以解 碼。 國際專利申請案wo 9 7/2 3 9 9 6已揭露一種方 法及一種裝置；其傳輸訊號內的聲音、影像及資料內容能 透過此種方法及裝置加以辨識並提供對應標籤。此等標籤 可供適合的接收器使用，藉以控制訊號之接收，期使代表 使用者不想要重製的資訊之訊號能被其它聲音、影像或資 料序列所取代。舉例而言，如此即能依照特定用戶之要求 ，濾除令人反感或厭惡的節目。 然而截至目前，電子化大眾傳播媒體（例如衛星電視 )之節目播送者只能預先進行非常粗糙的選擇處理來傳送 200408281 節目及廣告。一般而言，此種選擇方式係根據訊號發送器 所涵蓋的地理位置，或可同時預先考慮潛在的接收器/用 戶是否已向所討論的播送者申訂。即使如此，仍然很難控 制將不同類型的訊號傳輸到同一個地理區域範圍內的不同 用戶。因此，任何導向式廣告訊息及類似資訊會被傳送到 某一個播送者的所有用戶。因此，至少對傳播成本而言， 此類媒體當中的廣告成效較低。因而使得其產品/服務地 理關聯性較狹隘及/或鎖定較小族群的廣告客戶經常選擇 別種媒體來傳播其訊息，例如利用廣告傳單和專業化雜誌 。同時，此種電子化大眾傳播媒體之實用程度有時較低。 在一日當中的大部分時間裡，某些頻道傳送間歇性的訊號 ，或根本沒有訊號。當然，此表示傳輸資源及昂貴硬體投 資的浪費。 英國專利申請案GB A 2 3 4 4 0 9 9描述一種 透過電視及無線電廣播來傳送導向式廣告之系統，此種系 統症部分解決上述問題。根據地理資料一例如G P S (全 球定位系統）接收器所標示的資料，以及與用戶有關的社 會經濟資料，某一用戶之接收器可以只針對與該用戶有關 的廣告進行解碼。此類廣告與播送的節目一同傳送，並在 近端儲存於所有接收器單元內。插播廣告時會查詢使用者 個人資料（亦儲存在近端），並可依照個人資料之內容， 在插播廣告期間重複播送特定廣告。雖然此解決方案能提 昇廣告的準確性，但仍無法集中控制在哪一用戶端進行哪 些資訊解碼，因爲使用者個人資料只在近端存放於個別的 200408281 接收器單元內。再者，上述解決方案必須使用較複雜的接 收器單元；在某一方面，此種接收器單元必須能接收多個 平行化訊號，另一方面則必須能儲存此等訊號以供後續播 放之用。此外，既已儲存的大部分訊號可能毫無用處；亦 即，可能由於在近端已被濾除而始終沒有爲用戶播放。 【發明內容】 鑑於上述情況，本發明之一目的係爲解決上述問題並 提供解決方案；在某一方面，本發明能在有效運用傳播資 源之下，藉由提昇傳送到接收器的訊號關聯性來增加電子 化大眾傳播媒體之商業吸引力；另一方面，本發明適用於 較簡單且低成本的接收器單元。 根據本發明，節目播送者利用傳播資源，在給定情況 下，該等節目播送者選擇只傳送暫停資訊或完全終止傳送 資訊到第一用戶族群，以便由同一或另一節目播送者將承 載訊號傳送到第二用戶族群。 更確切而言，根據本發明之一方面，其藉由上述用於 控制不同用戶接收器內訊號解碼之方法而達成上述目的， 該方法之特點如下。預設第一組用戶接收器針對一訊號進 行解碼，其中該訊號經由第一傳播資源傳送。接著，此訊 號由代表第一種資訊轉變成代表第二種資訊；一控制訊號 從中央地點傳送到第一組用戶接收器。由此控制訊號啓動 ，第一組用戶接收器內的訊號解碼隨後從第一傳播資源轉 送到至少一第二傳播資源；上述第二種資訊即由此第二傳 200408281 播資源傳送。訊號解碼係根據與各用戶相關的儲存資料加 以控制，且該等資料與個別的用戶接收器有關聯，以使第 二種資訊對在此討論的用戶之相關程度較高。 根據本發明之另一技術形態，其藉由上述用於控制不 同用戶接收器內訊號解碼之系統而達成上述目的，該技術 形態之特點在於上述系統包含一中央控制單元，該中央控 制單元另包含用於將一控制訊號傳送到第一組用戶接收器 1 的裝置，其針對經由第一傳播資源所傳送的訊號進行解碼 * ，且該第一傳播資源與由代表第一種資訊轉變成代表第二 ® 種資訊的訊號有關。此外，上述中央控制單元包含用於控 制從第一傳播資源傳送到至少一第二傳播資源之訊號解碼 的裝置；該第二傳播資源傳送至少一第二種資訊。訊號解 碼由此根據與關聯於個別用戶接收器之各用戶有關的儲存 資訊加以引導。 在此情境下，訊號類型之改變被賦予非常廣泛的意義 ，因而不需要指出訊號從代表某特定類型的內容（例如「 節目」）改變成代表另一種類型的內容（例如「廣告」）* ;然而其同樣能反映出例如從第一個廣告轉變成第二個廣 告、從第一個節目轉變成第二個節目，或從某個經由特定 傳播資源傳送的節目轉變成經由另一個傳播資源傳送同一 個節目。 本發明能同時有效運用傳送一般節目及廣告訊息的傳 播資源之傳送容量。由於本發明亦有助於提供傾向鎖定族 群目標之資訊，因而能大幅增加電子頻道傳播系統之成本 9 200408281 效益。如此當然有利於所有包括操作者、節目傳播者、廣 告客戶及用戶在內的相關當事者。 【實施方式】 圖1係根據本發明之第一實施例圖示用於控制若干用 戶接收器1 1 1 一 1 1 3內的訊號解碼之系統。此系統使 一組頻道傳播者能傳送節目訊號P及訊號C，其代表傳送 給若干用戶s 1 - s 3的廣告訊息。在圖內所示範例中，此 傳送過程係透過衛星連線而達成。然而本發明可應用在任 何一種大眾傳播方法，例如無線電廣播、地面電視、有線 電視或其它實體網路。 頻道傳播者能直接經由用戶端1 4 1 - 1 4 3或網路 N 1聯繫節目規劃伺服器1 3 2。伺服器1 3 2另連接第一 存儲資源1 3 1 ;代表廣告或其它導向式訊息的訊號C從 第一存儲資源1 3 1擷取而來。此外，節目規劃伺服器1 3 2能透過連線與中央電腦1 0 0進行資訊交換；透過中 央電腦1 0 0可取得來自於一或多個節目傳播者的各式節 目P。圖中例舉四個存儲資源1 2 1 — 1 2 4。根據本發 明之實施例，至少某些節目P亦可由第一存儲資源1 3 1 獲得。 中央電腦1 0 0可依據頻道傳播者之需求來編排控制 順序，以及節目P與廣告資訊C送至至少一傳輸資源的訊 號流量；傳輸資源在此係以衛星發送器1 6 0及地球同步 200408281 衛星1 7 0來代表。衛星1 7 0進一步將訊號P及C轉送 到用戶接收器111一113;各用戶接收器至少與一用 戶81 — s3有關聯。一般而言，用戶接收器1 1 1 一 1 1 3可能只會針對個別用戶s 1 - s 3擁有相應於一或數個頻 道傳播者之有效申訂的訊號P和C進行解碼。用戶接收器 1 1 1 一 1 1 3針對訊號P和訊號C進行解碼之效能可由 例如伴隨各訊號P和訊號C之標籤來決定，且各訊號P及 訊號C與關於相應的用戶s 1 - s 3之儲存資訊R有關聯。 因此，儲存資訊R含有關於用戶s 1 - s 3是否已申訂在此 討論的頻道傳播者而獲得授權能運用訊號P和訊號C。根 據本發明之較佳實施例，資訊R存放在資料庫1 0 1，且 中央電腦1 0 0能使用資料庫1 0 1。然而根據本發明， 資訊R亦包含關於各用戶s 1 - s 3的特性資料，而此特性 資料可能引起導向式訊息（例如來自於廣告客戶的訊息） 之潛在發送器的注意，例如年齡、性別、公民身分、住宅 形態、家庭人數、職業、受雇或其它隸屬團體。此外，資 訊R可包含各用戶s 1 - s 3所在地理位置之相關資料。換 言之，如此即能依照儲存資訊R來控制特定用戶接收器1 1 1 - 1 1 3內的訊號解碼，使得給定的導向式訊息能配 合相應的用戶s 1 - s 3所期望的關注欄位。以下將會參照 圖3與圖4更詳細解說此點。若資料R當中有一或多個資 料欄位沒有資料（即空欄位），則會置入預設値，以便仍 可完成所有導向式訊息之適當控制。 因此，中央電腦1 0 0內的第一裝置能將控制訊號傳 200408281 送到第一組用戶接收器，此等用戶接收器針對經由第一傳 播資源傳送的訊號P進行解碼，且訊號P從代表第一種資 訊轉變成代表第二種資訊。 中央電腦1 0 0內的第一裝置能依據資料庫1 0 1內 關於各用戶S 1 — S 3 (各用戶接收器屬於該等用戶）的儲 存資訊R，以控制第一組用戶接收器內各用戶接收器從第 一傳播資源至至少一第二傳播資源的訊號解碼。 根據本發明之較佳實施例，用戶接收器1 1 1 - 1 1 3亦可直接或經由一或多個通訊網路N 3、N 2而與中央 電腦1 0 0連接。此等連線能讓中央電腦1 0 0依照訊號 P和C所伴隨的標籤來控制用戶接收器1 1 1 一 1 1 3針 對該等訊號進行解碼，例如申訂或頻道計劃當中的變更。 此外，關於用戶s 1 - s 3的頻道選擇（即傳播資源的選擇 )資訊可註冊，並經由上述連線傳回到中央電腦1 0 0。 因此，中央電腦1 0 0能編排與已儲存資訊R有關的傳播 資源選擇，而且能在未來根據該項編排來控制用戶接收器 1 1 1 一 1 1 3內的訊號解碼，從而進一步提昇導向訊號 C的預期關聯性。此外，當產生各用戶s 1 — s 3應當會感 到興趣的節目自動提案時，此種編排可支援中央電腦。 根據本發明之較佳實施例，衛星發送器1 6 0具備使 訊號P和C數位化的裝置，並可在傳送到衛星1 7 0之前 先進行壓縮、封包化及/或多工處理。舉例而言，此數位 處理可能包括將一組（例如五個）頻道集合成爲一般傳輸 連同一個資料通道，其中各頻道的最高頻寬至最低頻寬之 12 200408281 範圍可從1 · 5至6 · 5 M b i t / s。除資料頻道外，以較 佳實施例而言，各頻道附帶有一資料檔，例如作爲節目識 別及提案標籤之傳輸。 根據本發明之另一較佳實施例，兩或多個用戶可關聯 於同一個用戶接收器。不同的用戶即能透過用戶接收器所 附帶的遙控器來啓動特定影像/圖示或與用戶有關的相應 ，藉以指定其識別身分給中央電腦1 0 0。以此方式，對 用戶接收器之導向式訊號的控制會取決於當時是哪一個用 戶被視爲處於運作狀態而改變。此外，中央電腦1 〇 〇能 將關於不同用戶之觀眾行爲的更新資料逐漸儲存在資料庫 1 0 1的資訊R之內；因此，關於.用戶的較簡要初始資料 可隨著時間而建立能代表該用戶喜好的詳細狀況。在補充 作法上，資訊R中至少有某些與特定用戶有關的資料可存 放在用戶s 1 — s 3之相關用戶接收器1 1 1 一 ；l丄3的近 端。 根據另一較佳實施例，用戶無論是經由遙控器或直接 控制用戶接收器，均能依照節目和頻道的內容、語言、傳 播區域、目標社群等進行分類、搜尋及選定節目和頻道。 在此’依據的資訊係與相應的訊號一同傳送；相應訊號的 形式關聯於標籤及/或在資料欄位範圍內，且伴有一或多 個訊號傳播資源。然而，用戶可變更或刪除標籤或其內容 ’但此類操作只能透過中央電腦1 〇 〇啓用。 丰艮據另一實施例，用戶能存取與產品/服務相關訊號 一同傳送的其它資訊，而此資訊係透過導向式訊號C進行 13 200408281 宣傳。設若儲存的資訊R含有付款及/或餘額資料，則用 戶亦能透過輸入個人碼來訂購相關產品/服務。藉此，不 需要傳送敏感的付款資料即可完成購買程序；以安全性觀 點而言’此項特點確實有益。當然，付款功能亦可結合於 各種付款系統，例如電子頻道傳播系統當中的完整付款。 根據本發明之較佳實施例，各用戶接收器關聯於一個地理 位置。儲存的資訊R可納入地理資料，例如郵遞區號/郵 政編碼、區域或社群記錄；或者，資訊R可納入某種定位 設備，例如G P S接收器。藉此，系統能提供例如關於某 種產品的最近製造商、零售商或服務站等相關資訊。 根據本發明之另一實施例，用戶接收器1 1 1 一 1 1 3連接於個別的輸入項目，以手動標出位置資料，例如郵 遞區號/郵政編碼或地址。當然，用戶接收器1 1 1 一 1 1 3同樣適用於將此資訊傳送到中央電腦1 〇 0。位置資 料亦可構成用戶接收器1 1 1 一 1 1 3內被解碼的訊號P 和C之基礎。一般而言，位置資料可供操作者用來代表使 用者資訊的地理標示，例如地圖上各用戶係以其地理位置 來表示。數位地理介面可伴隨使用者的位置來呈現關於特 定使用者或使用者社群的資訊及統計資料。 根據另一較佳實施例，中央電腦1 0 0係直接或透過 操作員用戶端1 5 0而由系統操作員加以控制，且操作員 用戶端1 5 0經由通訊網路N 2連接至系統。操作員亦能 以手動方式編排、規劃及調整訊號流P和C在可用傳輸資 源上進行的傳送。 14 200408281 圖2係根據本發明之第二實施例圖示用於控制訊號解 碼之系統。本實施例與上述實施例之間的最重要差異在於 本實施例的訊號P和C不經由中央電腦1 0 0傳送。然而 ，中央電腦1 0 0控制所有訊號P和C的方式與上述實施 例相同。 因此在本實施例中，一組頻道傳播者能傳送節目訊號 P和訊號C，其代表傳送給若干用戶S 1 - s 3的廣告訊息 。圖2顯示此傳輸過程分別發生在分散式單獨衛星發送器 1 6 1 — 1 64和1 3 2以及地球同步衛星1 70。當然 ，訊號P和C同樣能透過兩個或兩個以上的存儲資源1 2 1 一 1 2 4和1 3 1所共用的衛星接收器進行傳送。如同 上述實施例，本實施例亦可應用在任何一種大眾傳播方法 ，例如無線電廣播、地面電視或有線電視。 頻道傳播者能直接經由用戶端1 4 1 - 1 4 3或網路 N 1聯繫節目規劃伺服器1 3 2。伺服器1 3 2另連接存 儲資源1 3 1 ;代表廣告或其它導向式訊息的訊號C從存 儲資源1 3 1擷取而來。此外，節目規劃伺服器1 3 2能 透過連線與中央電腦1 0 0進行資訊交換；透過中央電腦 1 0 0可獲得一或多個節目傳播者的各式節目p。圖中例 舉四個存儲資源1 2 1 — 1 2 4。 中央電腦1 0 0可依據頻道傳播者之需求來編排控制 順序，以及節目P與廣告資訊C送至至少一傳輸資源的訊 號流量；傳輸資源在此係以一組衛星發送器1 6 1 6 4及地球同步衛星1 7 0來代表。衛星1 7 0進一步將訊 15 200408281 號P及C轉送到用戶接收器111—113;各用戶接收 器至少與一用戶s 1 - s 3有關聯。一般而言，用戶接收器 1 1 1 一 1 1 3可能只會針對個別用戶s 1 — s 3擁有相應 於一或數個頻道傳播者之有效申訂的訊號P和C進行解碼 。用戶接收器1 1 1 一 1 1 3針對訊號P和訊號C進行解 碼之效能可由例如伴隨各訊號P和訊號C之標籤來決定， 且各訊號P及訊號C與關於相應的用戶s 1 — s 3之儲存資 訊R有關聯。因此，儲存資訊R含有關於用戶s 1 — s 3是 否已申訂在此討論的頻道傳播者而獲得授權能運用訊號P 和訊號C。根據本發明之較佳實施例，資訊R存放在資料 庫101，且中央電腦100能使用資料庫101。然而 根據本發明，資訊R亦包含關於各用戶s 1 - s 3的特性資 料，而此特性資料可能引起導向式訊息（例如來自於廣告 客戶的訊息）之潛在發送器的注意，例如年齡、性別、公 民身分、住宅形態、家庭人數、職業、受雇或其它隸屬團 體。此外，資訊R可包含各用戶s 1 - s 3所在地理位置之 相關資料。換言之，如此即能依照儲存資訊R來控制特定 用戶接收器1 1 1 一 1 1 3內的訊號解碼，使得給定的導 向式訊息能適合相應的用戶s 1 - s 3所期望的領域。以下 將會參照圖3與圖4更詳細解說此點。 根據本發明之較佳實施例，各訊號P和C所伴隨的標 籤包含時間資訊，此時間資訊使中央電腦1 0 0能在時間 限制下透過通訊網路N3完成訊號P和C在用戶接收器11 1 ~ 1 1 3之內的解碼；因此，例如在給定時間當中的特 16 200408281 定訊號P或C即能在缺乏訊號時用不同的訊號P或C加以 取代。 因此，中央電腦1 0 0內的第一裝置能將控制訊號傳 送到第一組用戶接收器，此等用戶接收器針對經由第一傳 播資源傳送的訊號P進行解碼，且訊號P從代表第一種資 訊轉變成代表第二種資訊。 中央電腦1 0 0內的第一裝置能依據資料庫1 0 1內 關於各用戶s 1 — S 3 (各用戶接收器屬於該等用戶）的儲 存資訊R，以控制第一組用戶接收器內各用戶接收器從第 一傳播資源至至少一第二傳播資源的訊號解碼。 根據本發明之較佳實施例，用戶接收器1 1 1 - 1 1 3亦可直接或經由一或多個通訊網路N 3、N 2而與中央電 腦1 0 0連接。此等連線能讓中央電腦1 〇 〇依照訊號p 和C所伴隨的標籤來控制用戶接收器1 1 1 一 1 1 3針對 該等訊號進行解碼，例如申訂或頻道計劃當中的變更。此 外，關於用戶s 1 - s 3的頻道選擇（即傳播資源的選擇） 資訊可註冊，並經由上述連線傳回到中央電腦1 〇 〇。因 此’中央電腦1 0 0能編排與已儲存資訊R有關的傳播資 源選擇，而且能在未來根據該項編排來控制用戶接收器1 1 1 一 1 1 3內的訊號解碼，從而進一步提昇導向訊號c 的預期關聯性。 根據本發明之較佳實施例，中央電腦1 〇 〇係直接或 透過操作員用戶端1 5 0而由系統操作員加以控制；操作 員用戶端1 5 0直接連接中央電腦1 〇 〇，或經由通訊網 17 200408281 路N 2連接至中央電腦1 0 〇。 圖3係根據本發明之實施例藉第一範例圖示如何在不 同傳播資源D 1 - D 4之間控制一組用戶接收器之訊號解碼 。圖3顯示傳播資源D 1 - D 4爲沿著時間軸t的水平及平 行區塊。不同種類的訊號（例如傳送到授權限制社群的「 節目」、「廣告」或導向式訊息）係以字母P和C來表示 。足標係標示出訊號的特定內容。 第一傳播資源D1已保留給某一個頻道傳播者用來傳送 節目P 1。第二、第三和第四傳播資源D 2、D 3和D 4目前 並未保留給特定頻道傳播者，而是供操作員自由運用。根 據本發明之較佳實施例，一般亦能用於傳送暫停資訊的傳 播資源原則上可供操作員自由運用，以傳送暫停資訊給後 續儲存的相關用戶接收器。藉此即可在近端替換暫停資訊 而不需加重任何傳播資源的負擔。然而，在某特定時間間 隔，有時需要透過重複傳送到用戶接收器來更新暫停資訊 。無論如何，此工作只需非常少量的傳播資源。 此範例假定節目P 1起初經由第一傳播資源D i傳播到 三個用戶S 1、S 2和S 3 ;彼此不同的資訊R已參照各用 戶S 1、s2和S 3存放在圖1與圖2中的資料庫1 〇 1。 然而所有用戶s 1 - S 3均已獲授權而能針對代表節目p工 的訊號進行解碼。此資訊係由節目P i所附帶的標籤決定， 且與資訊R當中存放的申訂資料有關。然而在某時間點上 ，根據討論中的頻道傳播者之欲求，節目P i當中存在廣告 時間。藉此，經由傳播資源D 1傳送的資訊類型同樣會從代 18 200408281 表節目P 1轉變成代表廣告C 1。除訊號的資訊類型會改變 之外，控制訊號d 1會從中央電腦1 〇 〇傳送到用戶s i 一 s 3的用戶接收器。資訊類型改變之前，控制訊號d i係在 特定時間藉由傳播資源D 1內的頻帶內發訊予以傳送，或經 由獨立的頻道加以傳送。 依照儲存的資訊R，由於沒有一個用戶s i - s 3預期 會對廣告C 1的內容有興趣，因此用戶s 1 — s 3的用戶接 收器反倒會被控制，使得此等接收器針對其它分別透過傳 播資源D 4、D 3和D 2傳送的廣告C 4、C 3和C 2進行解 碼。 在傳播資源D 1 - D 4上的資訊類型再度改變之前的某 特定時間，中央電腦1 0 0會傳送新的控制訊號d 2，且用 戶s 1 - s 3的用戶接收器會再度被控制來針對經由傳播資 源D 3傳送的訊號c 6進行解碼，其中訊號C 6與各用戶s i 一 S 3的關聯性最局。在此情況中，同一個項目會被估計， 以代表與所有用戶S 1 - S 3關聯性最高的資料。在另一個 時間間隔之後，中央電腦1 0 0會緊接在用戶接收器被控 制之後傳送另一控制訊號d 3，以便爲用戶s 1針對訊號C 9進f了解碼、爲用戶s 2針封訊號C 8進f了解碼’以及爲用 戶s 3針對訊號C 7進行解碼。然後，經由傳播資源D :傳 送的訊號繼續代表節目P 1，且此訊號之傳送時間較早於中 央電腦1 0 0將控制訊號d 4傳送到用戶s 1 — S 3之用戶 接收器的時間。 在節目P 1中的下一個廣告時間裡，中央電腦1 〇 〇將 19 200408281 控制訊號d 5傳送到用戶S 1 - S 3的用戶接收器。此時， 用戶s 1之用戶接收器被控制使其操作中的傳播資源D 1能 在資訊類型改變之後仍保持不變。事實上，用戶S 1之用戶 接收器會繼續針對同一個節目P 1進行解碼。然而，其它用 戶S 2和S 3之用戶接收器會被控制用來針對不同的訊號C i 0進行解碼，其中訊號C 1 Q經由另一個傳播資源D 2傳送 。在傳播資源D 1 - D 4上的資訊類型再度改變之前的某特 二 定時間，中央電腦1 0 0會傳送新的控制訊號d 6，且用戶 · s 1 - s 3的用戶接收器會再度被控制，用來針對分別經由 · 傳播資源D 2及〇 4傳送的最相關訊號C 1 3及C 1 5進行解 碼。稍後，中央電腦1 0 0會緊接在用戶接收器被控制之 後傳送另一控制訊號d 7，以便爲用戶s 1針對訊號C 1 5進 行解碼，並爲用戶s 2和s 3針對用戶接收器在控制訊號d 5解碼之後的節目P i部分進行解碼。然後，經由傳播資源 D 1傳送的訊號繼續代表節目P 1，且此訊號之傳送時間較 早於中央電腦1 0 0將控制訊號d 8傳送到用戶s 1 - s 3 之用戶接收器的賴。 * 基於技術理由，其適合緩衝暫存控制訊號d 5之後透過 傳播資源D 1傳送的節目P 1之一部分，因爲此訊號序列將 會緊接在控制訊號d 7之後透過傳播資源D 3重新傳送。根 據本發明之較佳實施例，緩衝暫存分別在圖2與圖3之系 統當中的存儲資源131內完成。 圖3顯示控制訊號d 1之前時間區間內的傳播資源D 2 一 D 4之一般訊號C X 1 — C x 3。同樣地，在控制訊號d 4 20 200408281 和d 5之間的時間區間顯示出一般訊號C x 4 - C x 6。此表 示：在此等時間區間內，導向式訊號可加以控制，使其在 不同的用戶接收器內進行解碼。如此，其它未使用的傳播 資源D 2 - D 4可以非常有效率的方式加以運用。 圖4係根據本發明之實施例藉第二範例圖示如何在不 同傳播資源D 1與D 2之間控制一組用戶接收器之訊號解碼 。圖中顯示傳播資源D 1與D 2爲沿著時間軸t的水平及平 行區塊。不同種類的訊號（例如傳送到授權限制社群的「 節目」、「廣告」或導向式訊息）係以字母P和C來表示 。足標係標示出訊號的特定內容。在此，控制訊號X 1 - X 4和义7(其代表特定用戶接收器內的訊號解碼）包含於個 別的標籤中，且此等標籤與透過傳播資源D 1和0 2傳送的 訊號P和C有關。 控制訊號X i - X 4和X 7含有至少一個時間標記；當 解碼訊號在傳播資源D 1和0 2之間改變時，此標記能使解 碼訊號同步。根據本發明之較佳實施例，各控制訊號X i -X 4和1 7亦代表某一個目標社群，例如某一個年齡層的用 戶。 例示範例係假定第一用戶s 1的訊號解碼由第一控制訊 號X ]L決定。同樣地，第二用戶s 2的訊號解碼由第二控制 訊號X 2決定，第三用戶S 3的訊號解碼則由第三控制訊號 X 3決定。透過註冊標籤，各用戶接收器可藉由遵循傳播資 源D 1和D 2之間「他的」控制訊號X 1 - X 3，針對其與用 戶S 1 — S 3有關的適當訊號進行解碼。圖中淸楚顯示，所 21 200408281 有用戶s i — s 3之用戶接收器在節目Pi的第一個廣告期 間針對導向式訊號c 1 - C 6進彳了解碼；同時’只有第二和 第三用戶S 2和S 3之用戶接收器在節目P 1的第二個廣告 期間針對導向式訊號C 1 〇、C 5和C 8進行解碼。在相同時 間當中，第一用戶S 1可觀看節目Pi而不會中斷。造成的 時間不一致可藉由例如節目P 1中的稍候中斷予以調整。 在實作當中，標籤（含有控制訊號X 1 - X 4和X 7 ) 會在時間上稍微偏移，使用戶接收器能針對標籤進行解碼 ，並有可能在相應的訊號到達用戶接收器之前變更其接收 。然而爲簡明起見，圖4並未圖示此種情況。 根據本發明之較佳實施例，各用戶接收器包含兩個或 兩個以上平行接收訊號的訊號接收器。藉此，第二訊號接 收器可依照經由第一訊號接收器解碼中斷之前的特定控制 訊號開始進行解碼。如此反倒能抒解傳播資源之間的快速 變化。 當然，在傳送控制訊號X i - X 4和X 7時，訊號類型 的實質改變（例如從「節目」轉變成「廣告」）不是必要 的先決條件。本發明能讓此類控制訊號在其它任何適於特 定應用場合考量的情況下加以傳送。因此，舉例而言，控 制訊號的傳送可考量到不同節目的改變。控制訊號的傳送 方式可進一步致使用戶接收器能跟隨以另一種方式傳送的 特定節目，或跟隨經由兩個或兩個以上的傳播資源D 1 - D 4進行平行傳送的節目。 本發明不限定於以上參照圖式的實施例，而在下列申 22 200408281 請專利範圍之範圍內能任意予以變更。 【圖式簡單說明】 (一*)圖式部分 現在將藉較佳實施例並參照後附圖式來詳細解說本發 明，惟該等較佳實施例係以範例形式加以揭露。 圖1係根據本發明之第一實施例圖示用於控制若干用戶接 收器內的訊號解碼之系統； 圖2係根據本發明之第二實施例圖示用於控制若干用戶接 收器內的訊號解碼之系統， 圖3係藉第一範例圖示本發明之訊號解碼實施例如何在不 同傳播資源之間加以控制；以及 圖4係藉第二範例圖示本發明之訊號解碼實施例如何在不 同傳播資源之間加以控制。 (二）元件符號說明 100 中央電腦 101 資料庫 111 用戶接收器 112 用戶接收器 113 用戶接收器 121 存儲資源 122 存儲資源 12 3 存儲資源 1 2 4 存儲資源 23 200408281 131 第一存儲資源 132 節目規劃伺服器 141 用戶端 142 用戶端 143 用戶端 150 操作員用戶端 160 衛星發送器 161 衛星發送器 162 衛星發送器 163 衛星發送器 164 衛星發送器 1 7 0 衛星 24200408281 (1) Description of the invention [Technical field to which the invention belongs] The present invention includes the decoding of a mass communication coded signal (such as a digital satellite channel). Specifically, the present invention relates to a system and method for controlling signal decoding according to the preambles of items 1 and 7 of the scope of patent application. [Prior art] For a long time, there have been many well-known different solutions for transmitting signals for general use through electronic mass media (such as radio broadcasting and terrestrial television). In addition, solutions using geostationary satellites to transmit similar signals have existed for a long time. In recent years, various types of digital encoding methods have also been used to limit the right to use the transmitted signal by various means; for example, the signal can only be decoded by an authorized receiver. The international patent application wo 9 7/2 3 9 9 6 has disclosed a method and a device; the sound, video and data content in the transmission signal can be identified by this method and device and corresponding labels provided. These tags can be used by suitable receivers to control the reception of the signal, so that the signal representing the information that the user does not want to reproduce can be replaced by other sound, video or data sequences. For example, this can filter off offensive or disgusting programs according to the requirements of specific users. However, as of now, broadcasters of electronic mass media (such as satellite TV) can only perform very rough selection processing in advance to deliver 200408281 programs and advertisements. In general, this choice is based on the geographic location covered by the signal transmitter, or it can be considered in advance whether a potential receiver / user has subscribed to the broadcaster in question. Even so, it is still difficult to control the transmission of different types of signals to different users within the same geographic area. Therefore, any targeted advertising message and similar information will be sent to all users of a certain broadcaster. Therefore, at least in terms of communication costs, advertising in such media is less effective. As a result, advertisers whose products / services are more geographically related and / or targeting smaller ethnic groups often choose other media to spread their messages, such as using flyers and specialized magazines. At the same time, the practicality of such electronic mass media is sometimes low. For most of the day, some channels send intermittent signals or no signal at all. Of course, this represents a waste of transmission resources and expensive hardware investment. The British patent application GB A 2 3 4 4 0 9 9 describes a system for transmitting targeted advertisements through television and radio broadcasts. This system partly solves the above problems. Based on geographic data, such as data marked by GPS (Global Positioning System) receivers, and socioeconomic data related to the user, the receiver of a user may only decode advertisements related to that user. Such advertisements are transmitted with the broadcast and are stored locally in all receiver units. The user's personal information (also stored on the near end) will be queried during the in-stream advertisement, and specific advertisements can be repeatedly broadcast during the in-stream advertisement according to the content of the personal data. Although this solution can improve the accuracy of advertisements, it still cannot centrally control which client decodes which information, because the user's personal data is only stored in the individual 200408281 receiver unit at the near end. Furthermore, the above-mentioned solution must use a more complex receiver unit; in one aspect, such a receiver unit must be able to receive multiple parallel signals, on the other hand it must be able to store these signals for subsequent playback . In addition, most of the signals that are already stored may be useless; that is, they may not always be played for the user because they have been filtered at the near end. [Summary of the Invention] In view of the above, one object of the present invention is to solve the above problems and provide solutions; in one aspect, the present invention can effectively improve the relevance of signals transmitted to a receiver under the effective use of propagation resources To increase the commercial appeal of electronic mass media; on the other hand, the invention is applicable to simpler and lower cost receiver units. According to the present invention, program broadcasters use transmission resources. In a given situation, these program broadcasters choose to transmit only pause information or terminate transmission information completely to the first user group, so that the same or another program broadcaster will carry the signal. Teleport to the second user group. More precisely, according to one aspect of the present invention, it achieves the above object by the method for controlling signal decoding in receivers of different users, which is characterized by the following. The first set of user receivers is preset to decode a signal, where the signal is transmitted via the first propagation resource. This signal then changes from representing the first type of information to representing the second type of information; a control signal is transmitted from the central location to the first set of user receivers. As a result, the control signal is activated, and the signal decoding in the first group of user receivers is then transferred from the first transmission resource to at least one second transmission resource; the second type of information is transmitted from the second transmission 200408281 broadcast resource. Signal decoding is controlled based on the stored data associated with each user, and these data are associated with individual user receivers, so that the second type of information is more relevant to the users discussed here. According to another technical form of the present invention, the above object is achieved by the system for controlling signal decoding in different user receivers. The technical form is characterized in that the system includes a central control unit, and the central control unit further includes A device for transmitting a control signal to a first group of user receivers 1, which decodes a signal transmitted via a first propagation resource *, and the first propagation resource is transformed from representing the first type of information to representing the first Signals related to two types of information. In addition, the above-mentioned central control unit includes a device for controlling decoding of a signal transmitted from the first transmission resource to at least one second transmission resource; the second transmission resource transmits at least one second type of information. Signal decoding is thus guided based on stored information related to each user associated with an individual user receiver. In this context, the change in signal type is given a very broad meaning, so there is no need to point out that the signal changes from representing a particular type of content (such as "programs") to representing another type of content (such as "advertisements") *; However, it can also reflect, for example, the transition from the first advertisement to the second advertisement, from the first program to the second program, or from a program transmitted through a specific transmission resource to another transmission resource. The same show. The present invention can effectively utilize the transmission capacity of transmission resources for transmitting general programs and advertisement messages at the same time. Since the present invention also helps to provide information that tends to target ethnic groups, it can greatly increase the cost of electronic channel distribution systems. This is of course beneficial to all relevant parties including operators, program distributors, advertising clients and users. [Embodiment] Fig. 1 is a diagram illustrating a system for controlling signal decoding in a plurality of user receivers 1 1 1-1 1 3 according to a first embodiment of the present invention. This system enables a group of channel distributors to transmit program signals P and C, which represent advertising messages sent to several users s 1-s 3. In the example shown in the figure, this transmission process is achieved through a satellite connection. However, the present invention can be applied to any method of mass communication, such as radio broadcasting, terrestrial television, cable television or other physical networks. Channel distributors can directly contact the program planning server 1 2 2 via the client 1 4 1-1 4 3 or the network N 1. The server 1 3 2 is further connected to the first storage resource 1 3 1; the signal C representing the advertisement or other guided information is retrieved from the first storage resource 1 3 1. In addition, the program planning server 132 can exchange information with the central computer 100 through the connection; through the central computer 100, various programs P from one or more program distributors can be obtained. The figure illustrates four storage resources 1 2 1 — 1 2 4. According to the embodiment of the present invention, at least some programs P can also be obtained from the first storage resource 1 3 1. The central computer 100 can arrange the control sequence according to the needs of the channel communicator, and the signal flow sent by the program P and the advertising information C to at least one transmission resource; the transmission resource is here a satellite transmitter 160 and geostationary 200408281 Satellites are represented by 170. Satellite 1700 further transmits signals P and C to user receivers 111 to 113; each user receiver is associated with at least one user 81-s3. In general, user receivers 1 1 1 1 1 3 may only decode signals P and C for which individual users s 1-s 3 have valid subscriptions corresponding to one or more channel communicators. The performance of the user receiver 1 1 1 1 1 3 for decoding the signals P and C can be determined, for example, by the tag accompanying each of the signals P and C, and each of the signals P and C and the corresponding user s 1-s The stored information R of 3 is related. Therefore, the stored information R contains information as to whether the users s 1-s 3 have subscribed to the channel distributors discussed here and are authorized to use the signals P and C. According to a preferred embodiment of the present invention, the information R is stored in the database 101, and the central computer 100 can use the database 101. However, according to the present invention, the information R also contains characteristic data about each user s 1-s 3, and this characteristic data may attract the attention of potential senders of directed messages (such as messages from advertisers), such as age, gender , Citizenship status, housing type, number of families, occupation, employment or other affiliated group. In addition, the information R may include relevant data on the geographical location of each user s 1-s 3. In other words, in this way, the signal decoding in the receiver 1 1 1-1 1 3 of a specific user can be controlled according to the stored information R, so that a given guided message can match the attention field expected by the corresponding user s 1-s 3 . This will be explained in more detail below with reference to FIGS. 3 and 4. If there is no data in one or more data fields in the data R (ie, empty fields), a default frame will be placed so that proper control of all guided messages can still be completed. Therefore, the first device in the central computer 100 can send the control signal 200408281 to the first group of user receivers. These user receivers decode the signal P transmitted through the first propagation resource, and the signal P is transmitted from the representative. The first type of information is transformed to represent the second type of information. The first device in the central computer 100 can control the information in the first group of user receivers according to the stored information R of each user S 1-S 3 (the user receivers belong to these users) in the database 101. Each user receiver decodes a signal from a first propagation resource to at least a second propagation resource. According to a preferred embodiment of the present invention, the user receivers 1 1 1-1 1 3 can also be connected to the central computer 100 directly or via one or more communication networks N 3 and N 2. These connections allow the central computer 100 to control the user receiver 1 1 1 1 1 3 according to the labels accompanying the signals P and C, such as to subscribe or change in the channel plan. In addition, information about channel selection (ie, selection of propagation resources) of users s 1-s 3 can be registered and transmitted back to the central computer 100 through the above connection. Therefore, the central computer 100 can arrange the selection of the transmission resources related to the stored information R, and can control the signal decoding in the user receiver 1 1 1 1 1 3 according to the arrangement in the future, thereby further improving the guiding signal. C's expected relevance. In addition, this arrangement can support the central computer when generating automatic proposals for programs that each user s 1-s 3 should feel interested in. According to a preferred embodiment of the present invention, the satellite transmitter 160 is provided with means for digitizing the signals P and C, and can be compressed, packetized, and / or multiplexed before being transmitted to the satellite 170. For example, this digital processing may include a set of (for example, five) channels into a general transmission together with a data channel, where the highest bandwidth of each channel is 12 to the lowest bandwidth 20042004281 can range from 1 · 5 to 6 · 5 M bit / s. In addition to the data channels, in a preferred embodiment, each channel is accompanied by a data file, such as transmission for program identification and proposal tags. According to another preferred embodiment of the present invention, two or more users may be associated with the same user receiver. Different users can use the remote control attached to the user receiver to activate specific images / icons or user-related responses, thereby assigning their identity to the central computer 100. In this way, the control of the directed signal of the user receiver will change depending on which user is considered to be in operation at the time. In addition, the central computer 100 can gradually store updated information about the audience behavior of different users in the information R of the database 101; therefore, the brief initial information about the users can be established over time to represent Details of the user's preferences. In a supplementary manner, at least some information related to a specific user in the information R can be stored in the relevant user receivers 1 1 1 1 of the users s 1 to s 3; the proximal end of l 丄 3. According to another preferred embodiment, the user can sort, search and select programs and channels according to the content and language of the programs and channels, the broadcast area, the target community, etc., whether via a remote control or directly controlling the user receiver. The information based on this is transmitted with the corresponding signal; the form of the corresponding signal is associated with the label and / or within the data field, and is accompanied by one or more signal transmission resources. However, users can change or delete tags or their content ’but such operations can only be enabled through the central computer 1000. Feng Gen According to another embodiment, the user can access other information transmitted with the product / service related signal, and this information is promoted through the guided signal C 13 200408281. Assuming that the stored information R contains payment and / or balance data, the user can also order related products / services by entering a personal code. In this way, the purchase process can be completed without transmitting sensitive payment information; from a security point of view, this feature is really beneficial. Of course, the payment function can also be integrated into various payment systems, such as full payment in electronic channel distribution systems. According to a preferred embodiment of the present invention, each user receiver is associated with a geographic location. The stored information R can be incorporated into geographic data, such as postal code / postal code, area or community records; or, the information R can be incorporated into some positioning device, such as a GPS receiver. In this way, the system can provide relevant information such as the nearest manufacturer, retailer, or service station about a product. According to another embodiment of the present invention, the user receiver 1 1 1-1 1 3 is connected to individual input items to manually mark out location information, such as postal code / postal code or address. Of course, the user receivers 1 1 1 1 1 3 are also suitable for transmitting this information to the central computer 1000. The location data may also form the basis of the decoded signals P and C in the user receiver 1 1 1-1 1 3. Generally speaking, the location data can be used by the operator to represent the geographical indication of the user information. For example, each user on the map is represented by its geographical location. Digital geographic interfaces can present information and statistics about a particular user or user community with the user's location. According to another preferred embodiment, the central computer 100 is controlled by the system operator directly or through the operator client terminal 150, and the operator client terminal 150 is connected to the system via the communication network N2. The operator can also manually arrange, plan and adjust the transmission of the signal streams P and C over the available transmission resources. 14 200408281 Fig. 2 illustrates a system for controlling signal decoding according to a second embodiment of the present invention. The most important difference between this embodiment and the above embodiment is that the signals P and C of this embodiment are not transmitted through the central computer 100. However, the central computer 100 controls all signals P and C in the same manner as in the above embodiment. Therefore, in this embodiment, a group of channel communicators can transmit program signals P and C, which represent advertisement messages transmitted to several users S 1-s 3. Figure 2 shows that this transmission takes place at the distributed individual satellite transmitters 1 6 1 — 1 64 and 1 2 3 and the geosynchronous satellite 1 70, respectively. Of course, signals P and C can also be transmitted through satellite receivers shared by two or more storage resources 1 2 1-1 2 4 and 1 31. Like the above embodiment, this embodiment can also be applied to any method of mass communication, such as radio broadcasting, terrestrial television, or cable television. Channel distributors can directly contact the program planning server 1 2 2 via the client 1 4 1-1 4 3 or the network N 1. The server 1 3 2 is also connected to the storage resource 1 3 1; the signal C representing the advertisement or other guided information is retrieved from the storage resource 1 3 1. In addition, the program planning server 132 can exchange information with the central computer 100 through a connection; through the central computer 100, various programs p of one or more program distributors can be obtained. The figure exemplifies four storage resources 1 2 1 — 1 2 4. The central computer 1 0 0 can arrange the control sequence according to the needs of the channel communicator, and the signal flow sent by the program P and the advertising information C to at least one transmission resource; the transmission resource is a set of satellite transmitters here. And geosynchronous satellite 170. Satellite 1700 further forwards the signals 15 200408281 P and C to user receivers 111-113; each user receiver is associated with at least one user s 1-s 3. In general, user receivers 1 1 1 1 1 3 may only decode signals P and C for which individual users s 1-s 3 have valid subscriptions corresponding to one or more channel communicators. The performance of the user receiver 1 1 1 1 1 3 for decoding the signals P and C can be determined, for example, by the tag accompanying each of the signals P and C, and each of the signals P and C and the corresponding user s 1-s The stored information R of 3 is related. Therefore, the stored information R contains information on whether the users s 1-s 3 have subscribed to the channel distributors discussed here and are authorized to use the signals P and C. According to a preferred embodiment of the present invention, the information R is stored in the database 101, and the central computer 100 can use the database 101. However, according to the present invention, the information R also contains characteristic data about each user s 1-s 3, and this characteristic data may attract the attention of potential senders of directed messages (such as messages from advertisers), such as age, gender , Citizenship status, housing type, number of families, occupation, employment or other affiliated group. In addition, the information R may include relevant data on the geographical location of each user s 1-s 3. In other words, in this way, the signal decoding in a specific user receiver 1 1 1-1 1 3 can be controlled according to the stored information R, so that a given directional message can be adapted to the field desired by the corresponding user s 1-s 3. This will be explained in more detail below with reference to FIGS. 3 and 4. According to a preferred embodiment of the present invention, the tag accompanying each of the signals P and C contains time information, which enables the central computer 100 to complete the signals P and C at the user receiver 11 through the communication network N3 under the time limit. Decoding within 1 ~ 1 1 3; therefore, for example, the special signal P or C at a given time can be replaced with a different signal P or C in the absence of a signal. Therefore, the first device in the central computer 100 can transmit the control signal to the first group of user receivers. These user receivers decode the signal P transmitted through the first transmission resource, and the signal P This kind of information becomes the second kind of information. The first device in the central computer 100 can control the information in the first group of user receivers according to the stored information R of each user s 1-S 3 (each user receiver belongs to such users) in the database 101. Each user receiver decodes a signal from a first propagation resource to at least a second propagation resource. According to a preferred embodiment of the present invention, the user receivers 1 1 1-1 1 3 can also be connected to the central computer 100 directly or via one or more communication networks N 3 and N 2. These connections allow the central computer 1 00 to control the user receiver 1 1 1 1 1 1 3 to decode the signals according to the labels accompanying the signals p and C, such as changes in subscriptions or channel plans. In addition, the information about the channel selection (ie selection of propagation resources) of the users s 1-s 3 can be registered and transmitted back to the central computer 100 through the above connection. Therefore, the 'central computer 1 0 0 can arrange the selection of the transmission resources related to the stored information R, and can control the signal decoding in the user receiver 1 1 1 1 1 3 according to this arrangement in the future, thereby further improving the guiding signal. c's expected relevance. According to a preferred embodiment of the present invention, the central computer 100 is controlled by the system operator directly or through the operator user terminal 150; the operator user terminal 150 is directly connected to the central computer 100, or via Communication network 17 200408281 Road N 2 is connected to the central computer 100. FIG. 3 is a diagram illustrating how to control signal decoding of a group of user receivers between different propagation resources D 1-D 4 according to a first example according to an embodiment of the present invention. Figure 3 shows the propagation resources D 1-D 4 as horizontal and parallel blocks along the time axis t. Different types of signals (such as "programs", "advertisements", or guided messages sent to a restricted community) are indicated by the letters P and C. A foot mark indicates the specific content of the signal. The first transmission resource D1 has been reserved for a channel broadcaster for transmitting the program P1. The second, third, and fourth communication resources D2, D3, and D4 are not currently reserved for specific channel communicators, but are freely available to operators. According to the preferred embodiment of the present invention, in general, the transmission resources that can also be used to transmit the suspension information can in principle be freely used by the operator to transmit the suspension information to the relevant user receivers for subsequent storage. This allows the pause information to be replaced at the near end without burdening any communication resources. However, at a certain time interval, it is sometimes necessary to update the pause information by repeatedly transmitting to the user receiver. In any case, this work requires a very small amount of communication resources. This example assumes that the program P1 is initially transmitted to three users S1, S2, and S3 via the first dissemination resource Di; information R that is different from each other has been stored with reference to each user S1, s2, and S3 in FIG. Database 1 in 2 However, all users s 1-S 3 have been authorized to decode the signals representing the program workers. This information is determined by the tag attached to the program P i and is related to the subscription data stored in the information R. However, at some point, according to the desire of the channel communicator in question, there is advertising time in the program Pi. As a result, the type of information transmitted via the communication resource D 1 will also be changed from the program P 1 on behalf of 18 200408281 to the representative advertisement C 1. Except that the information type of the signal will change, the control signal d 1 will be transmitted from the central computer 100 to the user receiver of the users si to s3. Before the information type is changed, the control signal d i is transmitted at a specific time by signaling in a frequency band within the propagation resource D 1, or is transmitted through an independent channel. According to the stored information R, since none of the users si-s 3 is expected to be interested in the content of the advertisement C 1, the user receivers of users s 1-s 3 will be controlled instead, so that these receivers are directed to other through The advertisements C 4, C 3, and C 2 transmitted by the propagation resources D 4, D 3, and D 2 are decoded. At a certain time before the type of information on the propagation resources D 1-D 4 changes again, the central computer 100 will send a new control signal d 2 and the user receivers of the users s 1-s 3 will be controlled again The signal c 6 transmitted through the propagation resource D 3 is decoded, and the correlation between the signal C 6 and each user si-S 3 is the most important. In this case, the same item is estimated to represent the most relevant data for all users S 1-S 3. After another time interval, the central computer 100 will send another control signal d 3 immediately after the user receiver is controlled, in order to decode the signal C 9 for user s 1 and seal the user 2 The signal C 8 is decoded 'and the signal C 7 is decoded for user s 3. Then, the signal transmitted via the transmission resource D: continues to represent the program P1, and the transmission time of this signal is earlier than the time when the central computer 100 transmitted the control signal d4 to the user receivers of the users s1 to S3. During the next advertising time in program P 1, the central computer 100 transmits 19 200408281 control signal d 5 to the user receivers of users S 1-S 3. At this time, the user receiver of the user s 1 is controlled so that the propagation resource D 1 in operation can remain unchanged after the information type is changed. In fact, the user receiver of user S 1 will continue to decode for the same program P 1. However, the user receivers of the other users S 2 and S 3 are controlled to decode different signals C i 0, where the signal C 1 Q is transmitted via another propagation resource D 2. At a certain specific time before the type of information on the propagation resources D 1-D 4 changes again, the central computer 1 0 0 will send a new control signal d 6 and the user receivers of the user · s 1-s 3 will again Is controlled to decode the most relevant signals C 1 3 and C 1 5 transmitted via the · propagation resources D 2 and 0 4 respectively. Later, the central computer 100 will send another control signal d 7 immediately after the user receiver is controlled, so as to decode the signal s 1 for the user s 1 and receive it for the users s 2 and s 3 The decoder decodes the P i part of the program after the control signal d 5 is decoded. Then, the signal transmitted through the transmission resource D1 continues to represent the program P1, and the transmission time of this signal is earlier than that of the central computer 100 transmitting the control signal d8 to the user receiver of the users s1-s3. * For technical reasons, it is suitable for buffering a part of the program P 1 transmitted through the transmission resource D 1 after the temporary control signal d 5, because this signal sequence will be retransmitted through the transmission resource D 3 immediately after the control signal d 7. According to the preferred embodiment of the present invention, the buffer temporary storage is completed in the storage resources 131 in the system of Figs. 2 and 3, respectively. Figure 3 shows the general signals C X 1-C x 3 of the propagation resources D 2-D 4 in the time interval before the control signal d 1. Similarly, the time interval between the control signals d 4 20 200408281 and d 5 shows a general signal C x 4-C x 6. This means that during these time intervals, the directional signal can be controlled so that it can be decoded in different user receivers. In this way, other unused propagation resources D 2-D 4 can be used in a very efficient manner. FIG. 4 is a diagram illustrating how to decode signals of a group of user receivers between different propagation resources D 1 and D 2 according to a second example according to an embodiment of the present invention. The figure shows that the propagation resources D 1 and D 2 are horizontal and parallel blocks along the time axis t. Different types of signals (such as "programs", "advertisements", or guided messages sent to a restricted community) are indicated by the letters P and C. A foot mark indicates the specific content of the signal. Here, the control signals X 1-X 4 and Y 7 (which represent the signal decoding in the receiver of a specific user) are contained in individual tags, and these tags are related to the signals P and 0 transmitted through the propagation resources D 1 and 0 2 C related. The control signals X i-X 4 and X 7 contain at least one time stamp; when the decoded signal changes between the propagation resources D 1 and 0 2, this flag can synchronize the decoded signals. According to a preferred embodiment of the present invention, each of the control signals X i -X 4 and 17 also represents a certain target community, such as users of a certain age group. The example assumes that the signal decoding of the first user s 1 is determined by the first control signal X] L. Similarly, the signal decoding of the second user s 2 is determined by the second control signal X 2, and the signal decoding of the third user S 3 is determined by the third control signal X 3. By registering tags, each user receiver can decode the appropriate signals related to users S 1-S 3 by following the "his" control signals X 1-X 3 between the dissemination resources D 1 and D 2. In the picture, it is clearly shown that the user receivers of all users of si-s 3 during 2004 200408281 have decoded the guided signals c 1-C 6 during the first advertisement of the program Pi; at the same time, 'only the second and third The user receivers of users S 2 and S 3 decode the guided signals C 1 0, C 5 and C 8 during the second advertisement of program P 1. During the same time, the first user S1 can watch the program Pi without interruption. The resulting time inconsistency can be adjusted by, for example, a wait interruption in program P1. In practice, the tags (including the control signals X 1-X 4 and X 7) will be slightly shifted in time, so that the user receiver can decode the tags, and it may be changed before the corresponding signals reach the user receiver. Its receiving. However, for the sake of brevity, this situation is not illustrated in FIG. 4. According to a preferred embodiment of the present invention, each user receiver includes two or more signal receivers for receiving signals in parallel. Thereby, the second signal receiver can start decoding according to the specific control signal before the decoding interruption by the first signal receiver. This, in turn, can explain the rapid changes between dissemination resources. Of course, when transmitting the control signals X i-X 4 and X 7, a substantial change in the signal type (such as a change from "program" to "advertisement") is not a necessary prerequisite. The present invention allows such control signals to be transmitted under any other circumstances suitable for consideration in a particular application. So, for example, the transmission of control signals can take into account changes in different programs. The transmission of the control signal may further enable the user receiver to follow a specific program transmitted in another way, or to follow a program transmitted in parallel via two or more transmission resources D 1-D 4. The present invention is not limited to the above-mentioned embodiments with reference to the drawings, but can be arbitrarily changed within the scope of the following application 22 200408281 patent. [Brief description of the drawings] (a *) Schematic portion The present invention will now be explained in detail with reference to the preferred embodiments and with reference to the accompanying drawings, but these preferred embodiments are disclosed by way of example. FIG. 1 illustrates a system for controlling signal decoding in a plurality of user receivers according to a first embodiment of the present invention; FIG. 2 illustrates a system for controlling signals in a plurality of user receivers according to a second embodiment of the present invention For the decoding system, FIG. 3 illustrates how the signal decoding embodiment of the present invention is controlled between different propagation resources by using a first example; and FIG. 4 illustrates the signal decoding embodiment of the present invention by using a second example. Control between dissemination resources. (II) Component symbol description 100 Central computer 101 Library 111 User receiver 112 User receiver 113 User receiver 121 Storage resource 122 Storage resource 12 3 Storage resource 1 2 4 Storage resource 23 200408281 131 First storage resource 132 Program planning Transmitter 141 client 142 client 143 client 150 operator client 160 satellite transmitter 161 satellite transmitter 162 satellite transmitter 163 satellite transmitter 164 satellite transmitter 1 7 0 satellite 24