TW514875B - Commercial skip and chapter delineation feature on DVD recordable media - Google Patents
Commercial skip and chapter delineation feature on DVD recordable media Download PDFInfo
- Publication number
- TW514875B TW514875B TW089123840A TW89123840A TW514875B TW 514875 B TW514875 B TW 514875B TW 089123840 A TW089123840 A TW 089123840A TW 89123840 A TW89123840 A TW 89123840A TW 514875 B TW514875 B TW 514875B
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- Taiwan
- Prior art keywords
- video
- recording
- scope
- media
- patent application
- Prior art date
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Classifications
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Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Television Signal Processing For Recording (AREA)
- Management Or Editing Of Information On Record Carriers (AREA)
- Optical Recording Or Reproduction (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
- Studio Circuits (AREA)
Description
514875 A7 B7 五、發明說明(1 ) 發明背景 技:術領域 (請先閱讀背面之注意事項再填寫本頁) 概略而言本發明之配置係有關僅聲頻、僅視頻以及聲頻 及視頻節目記錄於碟形媒體例如,可讀寫數位影音光碟、 硬碟機及磁光碟提供先進操作功能特色之方法及裝置。 相關技術説明 已經開發多種裝置俾讓消費者可記錄視頻及/或聲頻節 目供稍後呈現。此種裝置包括錄音帶、錄影機、可錄式光 碟以及最爲先進的可讀寫數位影音光碟(DVD)。也曾使用 硬碟機及磁光碟。 僅可記錄一次隨後大致變成DVD唯讀記憶體的DVD係以 頭字語DVD-R稱之。頭字語DVD通常也用於表示寫一次 或記錄一次技術。目前有數種格式可供DVD記錄、抹消 以及重新3己錄’換吕之’改寫或重寫。以頭字語Dvd_ RAM、D VD-RW及D VD+RW稱之。至目前爲止業界尚無一 致被採用的產業標準。頭字語DVD-RAM、DVD-RW及 D VD+RW也通常用以表示個另《I可重寫技術。此處述及可重 寫DVD技術、裝置及方法通常意圖涵蓋所有今日使用的 標準,以及未來可發展出的標準。 經濟部智慧財產局員工消费合作社印製 許多例中,節目的呈現係在觀視者及/或收聽者不在場 時兒錄用於稍後更方便的時間呈現。如此稱作移時節目。 於其它時間一節目正在被觀視及/或收聽而未被記錄且無 任何記錄的興趣,但觀視者及/或收聽者的注意力受到中 斷,例如被電話或未預期的訪客所中斷。若觀視者及/或 -4- 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) " 五、發明說明(2 ) (請先閱讀背面之注意事項再填寫本頁) 收聽者正在觀賞一個電視節目(舉例)且有個錄影帶在錄放 影機内部或可快速拿到且載入錄影帶,則節目可被記錄。 但觀視者及/或收聽者無法觀視及/或收聽節目的全部且以 通當時間順序觀視直到記錄完成爲止。完成記錄的時間依 據節目長度而定可長可短。 雖然通常可利用可讀寫DVD技術,但操作限於播放、記 錄、快速前轉、反轉及停止等功能。可利用暫停,但唯有 作爲綠放影機暫停功能的相對部分,例如中斷預錄節目的 播放或中斷正在觀視節目的記錄俾便由記錄中去除廣告。 不似電腦硬碟機,可讀寫DVD裝置具有極爲有意義的額 外功能亦即播放預錄的DVD。如此有經濟上的謗因來發 展可讀寫DVD技術包括方法及裝置,其可用以替代電腦 硬碟機。提供帶有改良有利功能特色而未有損降低成本及 增加銷售量目的之此種裝置乃一大挑戰。 經濟部智慧財產局員工消费合作社印製 可讀寫DVD裝置以及任何其他MPEG媒體記錄器期望的 一種功能特色係可自動識別且選擇性跳過記錄視頻信號節 段。例如此項功能特色可用以自動由記錄的電視廣播信號 中名輯去除廣告訊息。「廣告跳過」乃錄放影機領域的一 大功能。就此方面而言,曾經於錄放影機揭示多種系統來 解決此項問題。 目前錄放影機的廣告跳過技術係尋找間隔i 5、3〇或6 〇秒 的黑Λ框。黑訊;f匡用來產生於己錄電視節目中可能的廣土 映射圖。但此種習知辦法未療滿意’原因在於需要等候系 統回到節段開頭來將廣告標記出來。此外由於習知錄放影 本紙張尺度適用中國國家標準(CNS)A4規格(21G X 297公爱) " ------- 514875 經濟部智慧財產局員工消费合作社印製 A7 五、發明說明(3 ) 機未使用MPEG型編碼,故無法利用更複雜的視頻處理方 法’该等視頻處理方法可應用於偵測視頻節目變遷例如汽 業廣告期間、以及視頻呈現的章節間可能發生的視頻節目 變遷。進一步習知錄放影機使用其他變遷效應作爲線索來 描繪章節邊界,媒體不含可方便地在章節邊界劃界且選擇 性始於章節邊界播放的設備。 發明概述 本發明係關於一種控制mpeg視頻媒體記錄裝置俾於記 錄過程中自動識別且選擇性跳過視頻信號節段例如商業廣 告用之方法及裝置。於MPEG視頻資料記錄過程中,系統 連續監視正在被記綠的視頻資料俾偵測於一或多個影像圖 場之亮度梯度(或其他景觀變化偵測方法)。回應於景觀變 化’系統於檍案儲存對應發生景觀變化之媒體的時間及記 錄位置。根據一特徵方面,對應偵測的景觀變化之媒體的 記錄位置可由媒體之磁區、圖像起點代碼、·或對DVD而 言對應VOBU邊界之Nav-Pac(瀏覽封包)編號定義。 依據接續各偵測得的景觀變化間的時間間隔,系統識別 該對應視頻節段爲商業廣告或章節邊界。藉此方式識別節 段,然後可對播放呈現做選擇性控制。特別系統首先決定 該間隔是否對應關聯商業廣告之預定已知數値範圍。若該 間隔係落入商業廣告相關已知數値之預定範圍,則系統矸 於可讀寫媒體的播放控制檔案中插入一瀏覽指令。播放控 制指令可用於稍後播放期間跳過、快速前轉或檢索對應商 業廣告的視頻節段。另外,若該間隔未落入商業廣告相關 I----------I 裝 -------訂! rtt先閱讀背面之注意事項再填寫本頁) -6-
514875 經濟部智慧財產局員工消費合作社印製 、發明說明(4 ) 已知數値之預定範圍,則系統可於功能表檔案中插入_功 能表按紐俾允許使用者選擇性開始播放由該視頻節段所界 定的特定章節。 1 根據本發明之配置,儲存MpEG視頻之記錄媒體可選自 DVD磁碟、電腦硬碟、磁帶以及磁光碟組成的組群。事 實上系統也可應用至任何使用MPEG編碼器或直接記錄 MPEG位元流的任何可讀寫裝置(例如硬碟或磁帶)。 圖式之簡單説明 圖1爲根據本發明之配置可被提供以一或多種先進操作 功能特色之可讀寫DVD裝置之方塊圖。 圖2爲略圖用以説明可讀寫dvd之螺形軌。 圖3爲略圖用以説明於視頻物件集合中之視頻物件單元 的組織。 圖4爲流程圖用以説明廣告跳過及章節描繪之處理過 程。 圖5爲方塊圖可用以説明如何修改播放控制檔案。 較佳具體實施例之詳細説明 可讀寫DVD裝置 此處敎π根據本發明之配置執行多種先進操作功能特色 之裝置100,利用根據本發明之配置之可重寫碟形媒體 102,以方塊圖形式顯示於圖1。可重寫碟形媒體丨〇2於所 示具體實施例中具體實施爲可重寫DVD。許多例中(容後 詳述)可重寫碟形媒體也例如爲硬碟機或磁光碟()。 磁光碟之一例爲迷你碟片。許多例中,本發明之配置可應 ‘紙張尺度適用中國國家標準(CNS)A4規格<210 X 297公爱) -I.---^------ 裝·-------訂··----I-- (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消费合作社印製 514875 A7 ____^B7 五、發明說明(5 ) 用於視頻或聲頻或視頻與聲頻二者。 裝置100可窝至及讀取自碟形媒體,於本例爲可重寫 DVD 102。裝置包含一機械總成1 〇4、一控制區段… 視頻/聲頻輸入處理路徑140以及一視頻/聲頻輸由處理狀 位17 0。大半方塊配置於不同區段或不同路徑爲_然自 明,部分方塊的配置係供方便目的而非瞭解裝置操作所必 要。 機械總成104包含一馬達106用以旋轉DVD 1〇2,及一柃 取總成108適合於旋轉中的碟片上移動。拾取總成上的雷 射將點燒錄於碟片之螺形軌上,或照射已經燒錄於軌上的 點供兄錄與播放視頻及/或聲頻節目材料。爲求瞭解本發 明之目的,碟片是否可讀寫於一邊或兩邊,或於雙·邊記錄 l例,碟片是否爲雙邊記錄或隨後由碟片讀取係由碟片同 一邊或兩邊讀取皆無妨。拾取總成及馬達係由伺服器uQ 控制。伺服器110也接收來自碟片102之螺形.軌讀取的播 放資料信號作爲第一輸入。播放信號亦爲錯誤校正電路 130之輸入,錯誤校正電路可視爲控制區段之一部分或視 頻/聲頻輸出處理路徑的一部分。 控制區4又120包含控制中央處理單元(cpu) 122及劉覽資 料生成電路126。控制CPU 122供給第一輸入信號至瀏覽 貝料生成電路126,以及伺服器丨i〇供給第二輸入信號至 瀏覽資料生成電路126。伺服器有被視爲控制區段的一部 分。瀏覽資料生成電路126供給第一輸入信號至多工器 (MUX) 154,多工器形成視頻/聲頻輸入處理路徑14〇之一 • t ----------— 裝i — _丨—丨丨訂i — ·丨丨丨丨 (請先閱讀背面之注意事項再填寫本頁) -8 - A7 五、發明說明(6 ) 部分。 習知可讀寫DVD裝置中,瀏罾咨拉a七不a w 劇覓貝枓生成電路126將生成 覽封包資料欲於磁碟上儲存視頻資料。根據本發明 ::置,割覽資料生成電路可供給某些額外資訊含括於瀏 見封包。 頦外資訊可用以改良選定的特殊模式播放操作性能,容 後詳述。 二夕工态1:)4冬輸出爲錯誤校正編碼電路128之輸入。錯誤 校正編碼電路128之輸出爲可錄式輸入信號供給拾取總成 108,孩輸出將藉雷射被「燒錄」於碟片1〇2之螺形軌 上0 &制CPU 122也較佳可存取含於執跡缓衝器172以及記錄 緩衝器152之資料,如圖1所示。cpu 122可刪除、修改以 及重新格式化儲存於轨跡緩衝器丨7 2以及記錄緩衝器工5 2 之視頻資料。較佳設置控制及資料介面用以允許cpu 122 控制封包視頻編碼器144以及聲頻編碼器1 4 8之操作。提 供適當軟體或勃體於記憶體用以由控制Cpu 122執行習知 操作。此外,先進功能特徵1 3 4之程式常式提供用以根據 本發明控制CPU 122,容後詳述。 經濟部智慧財產局員工消费合作社印製 觀視者可致動功能之控制緩衝器13 2表示目前可利用的 功能亦即播放、記錄、反轉、快速前轉、暫停/播放及停 止。暫停爲錄放影機暫停操作的對應邵分,例如人工中斷 預錄節目的播放,或人工中斷被觀視節目的記錄俾由記錄 資料中去除廣告。分開緩衝器136設置用以接收指令執行 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) 514875 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明(7 ) 此處敎示之本發明之配置。 視頻/聲頻輸入處理路徑140爲一種信號處理電路,用以 將習知電視信號例如NTSC或PAL轉成數位化封包資料, 如MPEG-1或PEG-2,用以藉裝置1〇〇做數位記綠。輸入路 徑140包含NTSC解碼器142及視頻編碼器如MPEG-1或 PEG-2 144用於視頻進,以及包含聲頻類比至數位轉換器 (A/D)146以及聲頻編碼器如MPEG-1或MPEG-2 148。數位 化信號於多工器150中組合且儲存於記錄緩衝器152,直 到完整封包建構爲止。當聲頻和視頻資料被建構時,它們 於多工器154中與瀏覽資料生成電路126所產生的適當劉 覽封包組合,且送至錯誤校正編碼電路〗28。錯誤校正編 碼電路128也被視爲輸入路徑140的一部分。 實際上,DVD之螺形轨跡上可定址的最小單位爲i 6扇 區的ECC (錯誤校正編碼)區塊,此處各扇區包括2〇48位元 組使用者資料。一組爲整數EEC區塊例如i 2區塊。各組 區塊表示約0.5秒視頻與聲頻節目材料的組合。記錄一組 EEC區塊,例如192扇區需要的沿螺形轨之線性空間量於 此,定義爲一節段螺形轨。如此顯然記錄緩衝器僅需夠大 y谷納一節段資料即可。一節段資料例如對應於約秒 聲頻及視頻節目材料。 輸出處理路徑170包含錯誤校正區塊13〇以及軌跡緩衝器 或稱作輸出緩衝器172’其中由碟片讀取的資料被組裝成 馬封包供進—步處理。封包係由條件式存取電路m處 理,條件式存取電路控制封包’經由解多工器m的傳播 ·1·-----------·裝-----Γ (請先閱讀背面之注意事項再填寫本頁) 訂----------. -10- 514875 A7 B7 五、發明說明(8 進入個别視頻及聲頻處理路徑。如此也顯然軌跡緩衝器 172僅需夠大可儲存一節段資料即可,也對應於約〇 5秒聲 頻與視頻節目材料。 視頻由解碼器178解碼例如由ΜρΕ(Μ或MpEG_2解碼, 以及編碼作爲習知電視信號例如NTSC或pAL。聲頻由電 路182解碼例如由mpegj或MpEG_2解碼,且由聲頻數位 至類比(D/A)轉換器184轉成類比形式。一ρα缓衝器19〇 和PCI解碼器192可提供作爲解碼包含於磁碟片中所有之 瀏覽封包的呈現控制資訊。輸出處理路徑i 7〇如所記可視 爲包括錯誤校正電路130。 設置DSI緩衝器186用以接收瀏覽封包所含的磁碟搜尋資 訊(DSI)。DSI解碼器用以解碼瀏覽封包所含DSI資訊,容 後詳述。 / 注意,本發明可於硬體、軟體或軟硬體的組合實現。根 據本發明之機杏可項取儲存裝置可以集中方式於一電腦系 統如控制CPU 122實施;或以分散方式實施,此處不同元 件展開跨若干互連電腦系統。任一種電腦系統或其它適合 執行此處所述方法之裝置皆可接受。 特別雖然此處所述本發明涵蓋圖1之控制cpu 122,但 典型硬體及軟體的組合可爲通用目的電腦系統帶有一電腦 程式,該電腦程式當載入且執行時可類似圖丨之控制區段 120控制電腦系統以及DVD記綠系統,因此可執行此處所 述方法。本發明也可嵌置於電腦程式產品,其包含全部可 實施此處所述方法之功能特色,以及其當載入電腦系統時 [ si (請先閲讀背面之注意事項再填寫本頁) ----訂— 經濟部智慧財產局員工消費合作社印製 -11 - 514875
經濟部智慧財產局員工消费合作社印製 五、發明說明(9 ) 可執行此等方法。 、本内文之電腦程式表示以任_種語言、代碼或符號表示 :-組指令意圖讓-個具有資訊處理能力的系統直接或於 r列任一者或二者之後執行特殊功能:(㈧轉成另一語言、 代碼或符號;以及(b)於不同材料形式再生。此處揭示之 發明可爲-種方法嵌置於一電腦程式,其可由程式設計師 使用可與前述控制CPU 122相容的作業系統之市售開發工具執行。 D V D媒體 用於舉例説明本發明之配置,節目材料可記錄於可讀寫 DVD以及由可讀窝DVD播放。圖2所述可讀寫dvd 1〇適 合用作爲裝置100之磁碟102。磁碟丨〇係由平坦圓形塑膠 板狀構件12形成。可讀寫DVD係由二基材藉黏著層黏合 在一起形成厚1 . 2毫米的磁碟。中孔丨4形成於磁碟因此圖 1之馬達106的夾緊裝置可牢固夾緊磁碟以及根據本發明 之配置控制磁碟的角向運動。 轨跡上的記錄方向典型係沿螺形軌1 6向外方向記錄, 由螺形之較小半徑部分至螺形之較大半徑部分。若干系列 二大點(___)表示圖中未顯示出的轨跡部分。結果螺形軌 的起點被視爲接近孔1 4而以方形1 8表示。螺形終點被視 爲接近邊緣而以菱形2 0表示。如所記,業界人士 一般接 受螺形起點及終點的定義。根據本發明配置之某些先進功 能特色利用反向記錄,換言之由較大半徑螺形部分至較小 半徑螺形部分。轨跡也有邊至邊晃動(圖中未顯示)俾配合 -12- 本紙張尺度適用申國國家標準(CNS)A4規格(210 x 297公釐) (請先閱讀背面之注意事 4 項再填 · tmmmm §ame n i_l ϋ n n 一OJ· n n n 寫本頁) # 514875 A7 B7___ 五、發明說明(10 ) 媒體類型的檢索。由於僅顯示軌跡1 6該部分尺寸的困 難:,故係以大爲放大的比例顯示。 (請先閲讀背面之注意事項再填寫本頁) 各近圓形且爲徑向同心之螺形區段偶爾稱作爲轨跡,但 此用語通常不接受爲具有該特定定義。例如於CD-ROM, 執跡一詞也用來表示螺形軌之含有單首曲子之部分,或其 它選擇,同樣也可能或不可能常見於DVD。 本發明之配置於此處已經就可讀寫DVD媒體做説明,但 業界人士瞭解本發明非僅限於此一方面。反而如此處所述 用於改良特殊模式之對DVD瀏覽資訊的改良可用於任一 型磁碟媒體,包括但非限於DVD-R型媒體。 DVD資料結構 經濟部智慧財產局員工消费合作社印製 如圖3所示,各DVD含有一視頻管理者2 6及一視頻標題 集合(VTS) 28。VTS包括視頻標題集合資訊(VTSI) 27,功 能表之選項視頻物件集合29,一或多標題VOBS 30其含有 實際標題内容以及VTSI備份3 1。各VOBS 30包含多個視 頻物件3 2。各視頻物件3 2包括多個晶格單位3 4。各 VOBS也包括至晶格單位的指標器集合。藉此方式, VOBS資料將晶格單位聯結在一起且指示欲播放節目或晶 格單位的順序。特殊VOBS内部的晶格單位可加旗標用以 以任何預定順序播放。例如可循序播放或隨機播放。 各晶格單位包括多個VOBU 36。磁碟之視頻内容駐在 V0BU,各VOBU 36典型含有0.4至1.0秒呈現資料。各 VOBU 36爲一序列以記錄順序排列的資料封包。各VOBU 始於恰一個瀏覽封包(NV_PCK) 38且可包含全部下列各種 -13- 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) 五、發明說明(11) 封包包括視頻包(V—PCK) 39、聲頻包(AJPCK) 40及子圖 像G ( SP—PCK) 42。各個v〇BU通常係由一組圖像組(G〇p ) 、成典土 V〇BU含約1 2或1 6張圖像連同相關聲頻資 料。 NV—PCK白知對其所含的視頻物件單元含有呈現控制資 =(pci)以及磁碟搜尋資訊(Dsi)。呈現控制資訊含有一 印目的時序及主現 '細@。磁碟搜尋資訊係由之劉覽 封包於則轉及倒轉方向之相對位址組成。各個也 匕括於G0P之第一參考圖像之資料大小以及於v〇BU之 颈一張參考圖像的終點位址。此乃唯一有關結構的 線索。 含有主標題的磁碟可分成若干章節其可描繪某個故事。 形j視頻標題之一部分的各章節爲有用構造,其可作爲視 頻呈:的標記或分支點。DVD瀏覽資料包括控制播放順 序1資訊及指令集。功能表可提供於磁碟俾允許做内容選 擇。例如使用者可透過使用者功能表選擇某一特定視頻標 題(電影)或部分標題(章節)。 瀏覽指令特別可用於輔助視頻呈現的流程控制。各視頻 f題含有至少一節目鏈。節目鏈爲對晶格單位“之指標 器集合。節目鏈將各晶格單位聯結在一起且指示各晶格單 位的播放順序。各個節目鏈可選擇性始於一組前置指令, 接著爲晶格單位3 4其各自有一選擇性指令。各指令包括 至多三個指示,包括流程控制指示例如到、聯結、跳越、 跳出等。節目鏈資訊(PGCI)含於視頻資料流的呈現控制 l· — — .--------裝 (請先閱讀背面之注意事項再填寫本頁) 訂--- 經濟部智慧財產局員工消费合作社印製 -14- 514875 A7 B7 五、發明說明(12 ) 資訊(PCI)部分。PGCI可被視爲播放控制檔案用以控制包 含該視頻標題的該等晶格單位順序及呈現。 廣告跳過及章節描繪 圖4爲流程圖説明MPEG記錄之廣告跳過及章節描緣處 理過程。如該圖所示,處理始於步驟402,此時使用者開 始MPEG記錄作業,廣告跳過及章節描繪功能被作動。記 錄操作可由使用者利用控制緩衝器13 2選擇。 此處所述先進功能特色例如廣告跳過及章節描繪可利用 一個別分開的先進功能緩衝器136作動。此等控制器甩作 爲CPU 122的輸入且用以選擇適當常式134。 於步驟404,系統分析正在被記錄的視頻信號而偵測出 一線索,其表示有景觀變化變遷至廣告或電影的章節描 繪。任何適當的變遷線索皆可用於此項目的。但根據較佳 具體貫施例影像的消挺可選用作爲變遷線索。影像消複常 見於電視廣告當節目有一系列影像變遷至商業廣告時。同 理,此種變遷線索指示電影的章節描繪或視頻標題。 根據較佳具體實施例,如此處所述亮度梯度的偵測可如 美國專利第5,561,477號所述進行,該案併述於此以供參 考。如此處所述,於移動補償預測編碼資料壓縮系統例如 MPEG,可分析鄰近影像框而偵測亮度梯度。影像框如所 述被分成若千節段,鄰近訊框之對應節段間之絕對像素値 差異和係對各兩對鄰近框節段獲得。對各節段獲得二框差 異比。若比對全部預測數目區實質維持恆定則指示消褪。 有關亮度梯度偵測的信说處理可由控制CPU 122或由關聯 (請先閱讀背面之注意事 裝—— 寫本頁} 經濟部智慧財產局員工消费合作社印製 -15- 514875 五、發明說明(13 ) 經 濟 部 智 慧 財 產 局 員 X 消 费 合 作 社 印 製 封包視訊編碼器之分開專用信號處理器處理。 、二未偵4彳于消褪,系統於步驟4〇4繼續監視被記錄的視 訊信號。但若偵測得消褪,H统繼續前進至步驟傷。 於步I 406,系統於記憶體位置或檔案儲存對應第立次偵 測得亮度梯度於媒體的時間及記錄位置指示。如此於記錄 作業期間當發生消㈣做出相對時間的記錄,以及消㈣ 錄於記錄媒體上的位置。 根據圖5所示較佳具體實施例,藉消被偵測器5〇〇偵測樓 案502 /。消褪偵測器5〇〇可藉cpu 122連同適當程式常式 134執行。如此形成檔案5〇2包括經過時間5〇4、磁碟磁區 506以及磁區内部特殊圖像5〇8的記錄或指標。此種資料 檔案502例如可維持於關聯控制cpu ^的尺八%(圖中未顯 示)。 於步驟408,系統決定系統先前是否偵測得消褪關聯的 任何焭度梯度。若否,則系統前進至步驟4〇4.且繼續監視 下次亮度梯度。若系統先前已經偵測得亮度梯度,則於步 驟410繼續計算偵測得亮度梯度,,n ”與”n-1 ”、" n_2,,、 等間之時間間隔。如此系統計算最近偵測的梯度與先前若 干梯度間的間隔。 t 於步驟412,系統決定於步驟41〇計算的間隔是否在商業 廣告的預定値範圍内。此等預定値範圍通常於習知電視廣 告約3 0或6 0秒。但本發明非僅限於此等特定値,關聯電 視商業廣告之其他常見時間間隔也含括於此項評估(步把 412 )。如此若已經使用1 5秒的電視廣告,則1 5杪間隔可 訂 # 16- 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) 514875 A7 B7 ....... .-丨· — 五、發明說明(14 ) 含括於商業廣告的預定値範圍。 根據較佳具體實施例,商業廣告之預定値範圍可提供偏 差窗,因而包括比預期略短或略長的商業廣告。就此方面 而言,與名目値3 0或6 0秒偏差數秒即足。總而言之,數 値範圍經選擇因而足夠寬廣可包括大半商業廣告。 於步驟412,若偵測得亮度梯度界定的視頻節段間隔確 實落入商業廣告之預定値範圍,則系統前進至步驟4丨4。 於步驟414,CPU 122致使流控制指令插入MPEG視頻記錄 之播放控制檐案5 10。前述處理例顯示於圖5,頭二偵測 得的消褪分別發生於1分3 0秒以及2分〇秒。系統決定兩次 偵測得消褪間有3 0秒時間間隔,因而獲得結論爲相關視 頻節段應該爲廣告。如此於本例播放控制檔案5丨〇經修改 而使媒體播放器裝置快速前轉而由記錄位置i (磁區1 〇, 圖像1 )跳至記錄位置2 (磁區1 1,圖像3 )。 播放控制擒案5 10可爲任何用於控制MPEG視頻的播放 順序。例如於可讀寫DVD系統,播放控制檔案或指令510 可爲DVD瀏覽資料例如節目鏈資訊(pgci )。另外流控制 植案510包含一或多個瀏覽封包,其中一封包含括各 VOBU。總而言之於步驟414插入的流控制指令較佳經選 擇及執行而使MPEG媒體播放器於播放期間快速前轉或跳 過由偵測得的亮度梯度描繪的視頻節段。 另外,若於步驟412消褪間的間隔並未落入商業廣告的 預足値範圍,則系統繼續前進至步驟416。於步驟416, 推足偵測得的消褪或偵測得的亮度梯度需對應一節目内部 -17- 本紙張尺度適用中國國家標準(CNS)A4規格(21() χ 297公董) (請先閱讀背面之注意事項再填寫本頁) •裝 訂·---------#. 經濟部智慧財產局員工消费合作社印製 經濟部智慧財產局員工消费合作社印製 514875 A7 --—__B7___ 五、發明說明(15 ) 之章節起點或終點。如此CPU 122將使標記或指令自動插 入播放控制檔案,允許方便存取出現於偵測得消褪之前或 之後的視頻節段。例如於可讀寫DVD装置之例,標記可 插入PTT (標題表格部分)。此一「標記」爲對應偵測得消 褪或景觀變化的瀏覽封包編號。此將變成DVD可記錄標 準章節邊界。此等Γ標記」也可於儲存於PTT之前進行前 置處理。前置處理讓章節邊界相對均勻,例如約每5分鐘 的視頻播放。此種章節隨後用於結合章節上下指令,當播 放電影時允許使用者方便存取視頻内部之一章節。另外, 可用作爲電影播放期間之螢幕上功能表基礎或作爲螢幕上 章節磁碟功能表。另外,可插入功能表按鈕且提供適當流 程控制指令(步驟416 )。如此使用者可於播放模式期間作 動功能按紐而於偵測得的梯度η所界定的該視頻節段起點 開始播放。系統於步驟414或416之後前進至步驟404,於 該處繼續監視記錄作業期間之次一亮度梯度。 薊述處理例如説明於圖5。如所示,系統偵測得第2及 第3消褪發生於2分0秒以及1 〇分〇秒。系統可計算期間間 隔8分鐘。由於此段時間間隔未對應任何已知廣告間隔, 故系統做出結論消褪必然對應於章節終點。然後此項資訊 用來修改播放檔案而於對應磁區2 0圖像5的VOBU邊界形 成单卽標1己。然後章郎標1己用於讓使用者存取該間隔所規 定的特定視頻節段。另外,可於功能表檔案形成關聯記錄 於媒體上之MPEG的功能按鈕。功能按鈕可用於直接存取 選定的視頻節段。 -18- 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) ~ L n n n ϋ n ϋ ϋ 1 · n ·1 n n n i_i Mmt · an mmmam it ϋ ·ϋ ·ϋ ϋ I (請先閱讀背面之注意事項再填寫本頁) 514875 第089123840號專利申請案 中文說明書修正頁(91年9月) 五、發明説明(15s 10 可讀寫DVD 12 平坦圓形塑膠板狀構件 14 中孔 16 螺形軌 18 方形 2 0 菱形 26 視頻管理者 27 視頻標題集合資訊(VTSI ) 28 視頻標題集合(VTS ) 29 功能表 3 0 標題 3 1 V T S I備份 32 視頻物件 34 晶格單位 3 6 VOBU 3 8 瀏覽封包(NV_PCK ) 3 9 視頻包(V —PCK ) 40 聲頻包(A_PCK ) 42 子圖像包(SP —PCK ) 100 裝置 102 可重寫碟形媒體. 1 04 機械總成 106 馬達 10 8 拾取總成 110 伺服器 120 控制區段 122 控制中央處理單元(c P U ) 126 瀏覽資料生成電路 12 8 錯誤校正編碼電路 -18a- 本紙張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐) 514875 年Λ 第089123840號專利申請案 中文說明書修正頁(91年9月) 五、發明説明(15b ) 130 錯誤校正電路 132 控制緩衝器 134 先進功能特徵 136 分開緩衝器 140 視頻/聲頻輸入處理路徑 142 NTSC解碼器 144 封包視頻編碼器 146 聲頻類比至數位轉換器(A/D ) 148 聲頻編碼器 15 0 多工器 15 2 記錄緩衝器 1 54 多工器(MUX ) 170 視頻/聲頻輸出處理路徑 172 軌跡緩衝器 174 條件式存取電路 176 解多工器 17 8 解碼器 1 80 TV編碼器 1 8 2 電路 184 聲頻數位至類比(D/A)轉換器 1 86 D S I緩衝器 18 8 D S I解碼器 1 90 P C I緩衝器 1 92 P C I解碼器 5 0 0 消褪偵測器 5 02 檔案 5 04 經過時間 5 0 6 磁碟磁區 5 0 8 特殊圖像 5 10 播放控制檔案 -18b- 本纸張尺度適用中國國家標準(CNS) Α4規格(210X297公釐)
Claims (1)
- 514875 A8B8C8D8 、申請專利範圍 1. 一種用以控制一 MPEG視頻媒體記綠裝置俾於一段記錄 作業期間自動識/7*1且選擇性跳過一視頻信號節段之方 法,包含下列步驟: 記綠一 MPEG視頻資料於該記錄媒體上; 監視視頻資料以偵測景觀變化; 回應於各偵測得的景觀變化,於檔案中儲存對應發 生該景觀變化之媒體上時間及記錄位置; 決定各次接續偵測得的景觀變化與至少前一景觀變 化間的間隔,各個實例之間隔界定一視頻節段;以及 經由比較該間隔與和商業廣告有關之已知値的預定 範圍而識別商業廣告以及用以控制播放呈現之章節邊界 中之至少一者。 2. 如申凊專利範圍第1項之方法,進一步包含若該時間間 隔落入與該等商業廣告有關之已知數値的預定範圍,則 對播放期間快速前轉以及跳過視頻節段中之至少一者, 插入一瀏覽指令於媒體上於播放控制構案。 3. 如申請專利範圍第1項之方法,進一步包含若該時間間 隔未落入與商業廣告有關之已知數値的預定範圍内,則 插入一功能表鈕於該可讀寫媒體之一功能表檔案,俾允 許使用者選擇性開始播放由該視頻節段界定的章節。 4·如申請專利範圍第1項之方法,進一步包含回應於使用 者章節之上/下指令於可讀寫媒體内部形成章節邊界。 5..如申請專利範圍第1項之方法,其中該媒體上對應於偵 測得的景觀變化之記錄位置係由一磁區和圖像起點代碼 -19- 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) (請先閱讀背面之注意事項再填寫本頁) I裝---- tr--------- 經濟部智慧財產局員工消費合作社印製 經濟部智慧財產局員工消費合作社印製 514875 A8 · B8 ____S88 ________________ 六、申請專利範圍 以及VOBU編號中之至少_者界定。 6.如申請專利範圍第Η之方法,其中該記錄媒體係選自 由DVD碗碟、電腦硬碟、磁帶以及磁光碟組成的組群。 X如申請專利範圍第!項之方法,其中該景觀變化係出現 於多個影像圖場之間之亮度梯度。 8. —種控制一 MPEG視頻記錄俾於記錄作業期間自動識別 且選擇性跳過視頻信號節段之可讀寫媒體裝置,包含: 一 MPEG記錄裝置,用以記錄一 MpE(}視頻資料於 記錄媒體上; 一景觀變化偵測器,用以偵測一景觀變化; 處理器’回應於各偵測得的景觀變化用以於檔案 儲存對應發生該景觀變化之時間及記錄位置於媒體;以 及用以決定各該偵測得的景觀變化與至少前一景觀變化 間之時間間隔,各實例之時間間隔界定一視頻節段;以 及 其中該處理器經由比較該間隔與和商業廣告有關之 已知値的預定範圍而識別商業廣告與用以控制播放呈現 之章節邊界中之至少一者。 9. 如申請專利範圍第8項之裝置,其中該mpeg記錄裝置 係回應於處理器用以若該間隔係落入與商業廣告有關之 已知値的預定範圍内時,對播放期間快速前轉以及跳過 視頻節段中之至少一者,插入一瀏覽指令於該媒體於_ 播放控制檔案。 10. 如申請專利範圍第8項之裝置,其中該MPEG記錄裝置 -20- 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) -----------裝--------訂--------- (請先閱讀背面之注意事項再填寫本頁) 514875 A8B8C8D8 經濟部智慧財產局員工消費合作社印製 六、申請專利範圍 係回應於處理器,用於若該時間間隔未落入與商業廣告 有關之已知値的預定範圍内時,則插入一功能表鈕於可 漬寫媒體之功能表檔案,俾允許使用者選擇性開始播放 由視頻節段所界定的章節。 1L如申請專利範園第8項之裝置,其中該MPEG記錄裝置 係回應於處理器,用以回應於一使用者章節上/下指令 而於可讀寫媒體内部形成章節邊界。 12。如申請專利範圍第8項之裝置,其中媒體上對應偵測得 的景觀變化之記錄位置係由一磁區和圖像起點代碼以及 一 VOB編號中之至少一者界定。 13·如申請專利範圍第8項之裝置,其中該記錄媒體係選自 DVD磁碟、電腦硬碟、磁帶以及磁光碟組成的組群。 14·如申請專利範圍第8項之裝置,其中該景觀變化爲於多 個影像圖場之間出現的亮度梯度。 -21 - 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公爱) I —-------Aw --------^--------- (請先閱讀背面之注意事項再填寫本頁)
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI574556B (zh) * | 2015-09-25 | 2017-03-11 | 精碩世紀科技(北京)有限公司 | 視頻廣告監播方法及裝置 |
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