JP2014003636A - クローズド・キャプション・タグ付システム - Google Patents
クローズド・キャプション・タグ付システム Download PDFInfo
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- JP2014003636A JP2014003636A JP2013156103A JP2013156103A JP2014003636A JP 2014003636 A JP2014003636 A JP 2014003636A JP 2013156103 A JP2013156103 A JP 2013156103A JP 2013156103 A JP2013156103 A JP 2013156103A JP 2014003636 A JP2014003636 A JP 2014003636A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
- G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
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Abstract
【解決手段】受信機は、放送ストリームを受信して、受信機に存在する格納装置上格納された放送ストリームの範囲内でタグを検出し、そして処理する。タグは、受信機が変換して、かつ作動するコマンドと制御信号、さらに番組セグメントの開始と終了のポイントを含む。受信機は、再生の間、遠隔入力装置上のボタンを視聴者がプレスすることに応じて番組セグメントをスキップし、または、それは視聴者の嗜好に従い番組セグメントを自動的にスキップする。コマーシャルのような番組セグメントは、様々な基準に基づいて選択された新規の番組セグメントを有する受信機によって自動的に置き換えられる。メニュ、アイコン、およびウェブ・ページは、タグ内に含まれる情報に基づいて視聴者に表示される。
【選択図】図1
Description
再び図12を参照すると、タグは、テレビ・ストリーム1201で生じるアブストラクト・イベントである。これらは、アナログ信号のVBIにまたはMPEG2マルチプレックスの個人的なデータ・チャネルに埋め込むことが出来る。上述したように、タグは、クローズド・キャプション(CC)・フィールドに埋め込むことが出来、かつ循環バッファ1203または記憶割当てスキーマ内に抽出することが出来る。ワード・パーサ1204は、CCデータのその走査の間、固有のタグを識別する。タグは、標準CC制御コードと共に点在する。タグは、例えば、現在の時刻および視聴されている番組に基づいて、暗示的に発生させることも出来る。
1) システム1905は、オリジナルの番組をキャシュし続けることが出来るので、視聴者1907が番組1901を巻き戻し、かつ再びそれを再生するならば、彼は上書きされたセグメントを見る。
2) 旧番組セグメント1902は、キャッシュの場合も置き換えられるので、視聴者はセグメントが上書きされていることに決して気づかない。
3) システムは、オリジナルのセグメント1902をキャシュし、かつ再生時にタグを再解釈する。しかしながら、インテリジェント・タグを先取りしない場合には、これは、視聴者が、システムが上書きされたセグメントの第一のタグを認識するように、十分な時間をバックアップする場合のみ、正しく働く。
・ 設計は、メカニズムとポリシの明白な分離を提供する。
・ タグは、内部的には、ポリシ・モジュールをトリガするアブストラクト・イベントと見られる。受信されたタグ情報をこれらの内部アブストラクトにマッピングすることは、ソース・パイプライン・オブジェクトの役割である。
・ アブストラクト・タグは、それらがあたかも他のセグメントであるかのように、PesBufストリームに格納される。これは、任意のサイズ設定をされたタグを正確なタイミング情報で処理することを可能にする。タグをレコーディングされた番組の一部として残すことが出来るので、いつ番組が見られても、正しいアクションが取り込まれる。
・ タグは、現在の番組、将来の番組等について情報をアップデートすることが出来る。この情報は、レコーディングされた番組に対して保存される。
・ タグは、それらがシステムを通過するように、ログすることが出来る。この情報をアップロードすることも可能である。タグに関連する全ての情報を保存することは必要ない。
・ タグは、別個の時刻表に基づいて発生することが出来る。例えば、タグを発生させるためにネットワーク局のログを使用することは、見られている時間およびネットワークに基づく。時間に基づくタグは、レコーディングされたストリーム内に保存される。
図20に示されるように、時間に基づくタグは、時間に基づいたタグ認識器(Tag Recognizer) 2012によって取り扱われる。このオブジェクト2012は、チャネル変更イベントを聞き、かつ公知のネットワークが切替えられると、このネットワークに対する「時間ログ」を読み出そうとする。一つが存在するならば、オブジェクト2012は、現在の時刻に基づいてタグ・スケジュールを構築する。各タグごとに時間が生じるたびに、オブジェクト2012は、挿入されるタグを示しているソース・オブジェクト2001に、イベントを送信する。ソース・オブジェクト2001は、作成中の現在のPesBuf内に次の利用可能なポジションにタグを挿入する。次の「利用可能な」ポジションは、フレーム境界または他の条件に基づいて決定することが出来る。
ソース・オブジェクト2001は、それが生成するPesBufストリームに、タグを挿入する役割を果たす。これは、アナログ入力およびデジタルTVソースのための別個のソース・オブジェクトがあると仮定している。
- EDSフィールドの範囲内。
- CCフィールドの暗黙の使用。
- おそらくATVEFスペックを使用したVBIのへの変調。
- 時間に基づく。
- TiVo Tagging Technologyを使用したバンド内。
- MPEG2の個人的なデータ・チャネル。
- MPEG2のストリーム特徴(フレーム境界等)。
- 時間に基づくタグ。
概念的には、全てのタグは、2つの広いグループに分解することが出来る。番組をレコーディングするような、受信に応じてアクションを必要とするもの、および、番組提供、すなわち、番組が見られるとき、に応じてアクションを必要とするものである。
受信に応じてアクションを必要とするタグは、次のように取り扱われる:TmkPushSwitchクラス2002の新規の受信タグ・メカニズム(Reception Tag Mechanism)サブクラス2003が、作成される。入力ストリームが、ソース・オブジェクト2001と番組キャッシュ・トランスフォーム2013との間でこのクラス2003を通過するので、クラス2003は、受信タグを認識しかつ適切なアクションを取り込む。受信タグは、一般に一度取り扱われ、次は使用禁止にされる。
番組提供に応じてアクションを必要とするタグは、次のように取り扱われる:TmkPullSwitchクラス2008の新規の提示タグ・メカニズム(Presentation Tag Mechanism)サブクラス2007が、作成される。出力ストリームが番組キャッシュ・トランスフォーム2013およびシンク・オブジェクト2011との間でこのクラス2007を通過すると、クラス2007は番組提供タグを認識し、かつ適切なアクションを取る。
現在のチャネルを示すTagReceptionPolicyオブジェクト2009が存在する場合には、タグ受信処理のみが許可される。ソース・チャネルのためのTagPresentationPolicyオブジェクト2010が存在する場合には、番組提供タグの処理のみが許可される。TagPolicyオブジェクトは、どのタグが、認識されるべきか、かつ何のアクションが可能であるかを記述する。入力チャネルが変更されると、受信タグ・オブジェクトが、通知され、かつ、それは、(もしあれば)そのチャネルのためのTagReceptionPolicyオブジェクト2009をフェッチし、定義されたポリシに従う。出力チャネルが変更されると、番組提供タグ・オブジェクトが、通知され、かつ、それは(もしあれば)そのチャネルのためのTagPresentationPolicyオブジェクト2010をフェッチ(fetch)し、定義されたポリシに従う。
タグの受信は、データ・ベースにログすることが出来る。TagReceptionPolicyオブジェクト2009が存在する場合のみ、これは、生じ、かつタグ・ロギング属性が、セットされる。例えば、ロギング属性は、セットされるかもしれないが、受信アクションは、行うことが出来ない。これは、入力ストリーム内で受動ロギングのアクティビティを可能にする。
現在の上映について情報のアップデートをサポートすることは、重要である。以下の方策が、提案される:
- 入力ソースが変更される、または新規の上映が開始されるときはいつでも、開示オブジェクトのコピーが作られ、そしてパイプラインでの全ての更なる動作は、このコピーとは別に働く。
- アップデートされるタグは、受信タグである; ポリシによって許可されるならば、コピーされた上映オブジェクトは、アップデートされる。
- 現在の上映がレコーディングされる場合には、上映オブジェクトのコピーもセーブされる。その結果、セーブされた番組は、その番組にセーブされた正しい情報を有する。
- オリジナルの上映オブジェクトは、このプロセスによって変更されない。
- レコーダは、上映オブジェクトへの変更を認識していなければならないので、レコーダが、例えば、野球の試合の終了前にカットしてしまうことは無い。
一旦、TagPolicyオブジェクトが有効なタグを識別するために使用されると、標準化されたアブストラクト・タグがタグ・インタプリータ(Tag Interpreter) 2005によって解釈され、かつ動作のタグがTiVo タグ・ステート・マシン(Tag State Machine) 2006によって実行されるという点で、タグは極めてフレキシブルである。解釈されたタグは、定義済みのアクションの組をトリガする。アクションの各組は、システムに前もってプログラムされている。
利用可能なアブストラクトタグの組は、タグ/アクションテーブルと呼ばれるテーブル内で規定される。このテーブルは、典型的には、データベースオブジェクト内に格納される。小量のアブストラクトアクションが、規定されている。これらのアクションは、3つの一般領域に分けられる。
- 視聴者管理下のアクション(対話を含むことが出来る)。
- ストリーム(チャネル、時間、持続時間等)についてのメタ情報。
- TiVo制御タグ。
- メニュ
このタグは、視聴者に選択肢が提示されることになっていることを示す。タグと関連するデータは、選択肢が何であるかおよび提示スタイルのような、他の興味のあるデータを示す。メニュは、関連した不活動タイムアウトを有する。
-代替番組プッシュ条件(Push Alternate Program Conditional)
このタグは、ある代替番組がある条件を満たすならば、再生されるべきであることを示す。この条件は、ポリシ・モジュールによって分析される。条件が、常に満たされているとすることも出来る。
-代替番組ポップ条件(Pop Alternate Program Conditional)
このタグは、前の番組に戻る。番組が終わると、代替番組のスタックが自動的にポップされる。チャネルが変えられる、または視聴者がTiVo Centralメニュ領域に入ると、全ての代替番組が、ポップされる。代替番組は、視聴されているストリームに任意のシーケンスを挿入する方法である。条件データは、トップ・レベルでは評価されない。これに代えて、ポリシ・モジュールが、選択のためにこのデータを検討しなければならない。例えば、これは、「テレスコーピング」広告を作成するために使用することが出来る。
- インジケータ表示条件(Show Indicator Conditional)
このタグにより、インジケータがスクリーンに描かれる。インジケータには名前がつけられ、そしてアクティブ・インジケータの組は、いつでも問い合わせることが出来る。タグまたはタグ・ポリシは、インジケータが生成された時のタイムアウト値を示すことが出来る。
- インジケータ消去条件(Clear Indicator Conditional)
このタグにより、アクティブなインジケータが消去される。チャネルが変更され、または視聴者がTiVo Centralメニュ領域に入ると、全てのインジケータは、消去される。
- 現在の上映情報
このタグは、現在の上映についての情報のための一般的なバケットである。各タグは、典型的に1つの情報(例えば、開始時刻、終了時間、持続時間等)を伝える。このタグは、イベントのレコーディングを「長くする」ために使用することが出来る。
- 将来の上映情報
このタグは、上記のものに類似しているが、将来の上映についての情報を含む。興味を引く2つの環境がある:
・この情報は、データベース内にすでに常駐する上映を参照する。データベース・オブジェクトは、適切に、アップデートされる。
・この情報は、存在しない上映を参照する。新規の上映オブジェクトは、作成され、かつタグから初期化される。
- 修正許可
このタグは、一般に、今月のセキュリティ・キーによって暗号化される。認可の寿命は、ポリシーによって、おそらく1、2時間にセットされる。従って、ローカルTiVoシステム状態に対する修正が許可される場合、タグは絶えず再放送されることが必要となる。
このタグの観念は、EDSのような本質的に不安定なタグ・メカニズムを使用して、不当な(または偶然の)攻撃を避けることである。ネットワークがEDS情報を提供すると、我々は最初に彼らのタグが正確であること、およびタグ配送システムへの攻撃がありそうもないことの保証を得たい。そして、我々は、そのネットワークに認可タグを周期的に与える認可システムを提供するそのネットワークを使用するであろう。未許可のタグは、ソース・オブジェクトによってPESストリームに決して挿入されるべきでない。
- 現在のレコーディング条件
このタグは、現在の番組のディスクへのセーブをこのポイントから開始させる。現在の番組が終わると、レコーディングは終わるであろう。
- 現在のレコーディング停止条件
このタグは、現在の番組のレコーディングを停止する。
- 将来のレコーディング条件
上映オブジェクトIDが、提供される(おそらく、将来の放映(Future Showing) タグ内に送信される)。番組は、明示的な視聴者の選択より低いバックグラウンド優先順位で、レコーディングする予定に入れられる。
- 将来のレコーディングキャンセル条件
上映オブジェクトIDが、提供される。レコーディングがそのオブジェクト用の前のタグによって予約が入れられた場合、レコーディングはキャンセルされる。
これらのタグおよび将来の放映タグは、暗号化された、安全なフォーマットで挿入することが出来る。これらが適切に有効化されると、ソース・オブジェクトは、PESストリーム内にこれらのタグを挿入するのみである。
これらのタグの目的の一つは、TiVo在庫(例えば、ループセット(loopset)、広告、割込み、など)のレコーディングを自動的にトリガーすることである。後でのダウンロードにより、この在庫は「インストールされ」、かつ利用可能となるであろう。
- ファイルのセーブ条件
このタグは、ディスクに格納されるストリームを通してデータをパスするために使用される。例えば、放送ウェブページは、このメカニズムによりパスされるであろう。
- オブジェクトのセーブ条件
このタグは、ディスクに格納されるストリームを通してオブジェクトをパスするために使用される。オブジェクトを格納することは、ルールをアップデートしている標準オブジェクトに従う。
このセクションは、タグがクローズド・キャプショニング・ストリーム内にどのように配置されるかについて記述する。これは、決定的なものではないが、それは、一般的にクローズド・キャプショニング仕様を良く知っていることを前提とする。
ストリームに配置されるTiVo Tagは、クローズド・キャプショニングが可能にされたテレビ上の表示に影響を及ぼすべきでない。これは、最初に「再開キャプション・ローディング」コマンドを(失敗許容のため2度)送信し、タグを記載する文字列が続き、「イレーズ・ノンディスプレイド・メモリ」コマンドが(失敗許容のため2度)続くことによって達成される。これが行うことは、テキストをオフスクリーン・メモリへロードし、次に、メモリをクリアすることである。可能にされるクローズド・キャプショニングを有する正規のTVは、(EIA-701の標準に従って)このテキストを表示しない。
TiVo Tagによって送信されるテキストは、英字「Tt」と、それに続くタグの長さ示すシングル文字と、それに続くタグ・コンテンツと、それに続くタグ・コンテンツのためのCRCとから成る。英字「Tt」は、通常のCCデータ内では遭遇しそうにないほど十分に独特である。さらに、通常のCCデータは、常に、テキストがスクリーン上のどこに表示されるかを示す位置制御コードによって開始される。我々がオンスクリーンを表示していないので、この位置決めデータのためのニーズがない。ゆえに、「再開キャプション・ローディング」制御コードの直後に「Tt」に遭遇する可能性は極めてまれで、我々は、この組合せがTiVoタグであることをほとんど保証することが出来る(しかし実施は、これが真であることには基づかないであろう)。
CRCは、16ビットCRC-CCITT(すなわち、多項式= x^16 + x^12 + x^5 + 1)である。これは、3つの別個の文字としてストリーム内に配置される。第一の文字は、0x20をCRCの最上位の6ビットに加えることによって計算される。次の文字は、0x20をCRCの次の6ビットに加えることによって計算される。最後の文字は、0x20をCRCの最後の4ビットに加えることによって計算される。
この項は、TiVo Tagの具体例を詳述する。すべてのタグ・シーケンスがタグ・タイプを示す少なくとも一つのバイトから始まることに留意されたし。
図17を参照すると、iPreviewタグは、4つの情報を含む。第一のタグは、予告されている番組の32ビット・プログラムIDである。第二のタグは、プロモーションがどれくらい長く続くかと言う情報を含む。第三部分は、スクリーン1701上のどこにiPreviewアラート1702を配置するかと言う情報、および、最後の部分は、どのサイズのiPreviewアラートを使用するかと言う情報を含む。
iPreviewタグの第一の文字は、常に「i」である。
・32ビット:プログラムID
・9ビット:X位置
・8ビット:Y位置
・4ビット:グラフィック・サイズ
・10ビット:タイムアウト
・1文字:バージョン
・1文字:予備
1) 0x20 + ID[31:26 ]
2) 0x20 + ID[25:20 ]
3) 0x20+ID[19:14 ]
4) 0x20 + ID[13:8 ]
5) 0x20 + ID[7:2 ]
6) 0x20 + ID[1:0 ] X[8:5 ]
7) 0x20 + X[4:0 ] Y[7]
8) 0x20 + Y[6:1 ]
9) 0x20 + Y[0] size[3:0 ]
10) 0x20 + Y[0] size[3:0 ] timeout[9]
11) 0x20 + timeout[8:3 ]
12) 0x20 + timeout[2:0 ]
13) 0x20+version
14) 予備
Resume caption loading Resume caption loading T t 1 (0x20+17 = 0x31 = 01 10001="1") I <13 character iPreview tag> 3 character CRC Erase nondisplayed memory Erase nondisplayed memory
現在、パリティ・ビットはパリティ・ビットとして使用されている。しかしながら、CRCがすでに含まれているので、パリティ・ビットのエラー・チェック能力に対するニーズはない。これに、あるステップを更に取り込むと、パリティ・ビットを巧妙な方法で使用することが出来る。クローズド・キャプショニング受信機は、不正確なパリティ・ビットを有するいかなる文字も無視すべきであるから、制限された帯域幅CCチャネルは、間違ったパリティを意図的に使用することによって、より上手く使用できる。これにより、再開・キャプション・ローディングおよびイレーズ・ノンディスプレイ・メモリの文字の消去が可能となり、さらにTiVoタグを既存のCCデータの間に「点在させる」ことをより容易にする。
図17、20、21および22に示されるように、iPreviewタグは、タグ・インタープリータ(Tag Interpreter) 2005に、iPreviewアラート1702をスクリーン1701に表示させる。iPreviewアラート1702は、視聴者に、アクティブなプロモーションが利用可能であることを知らせることが出来、かつ視聴者は、TiVoシステムに、将来の上映をレコーディングすることを知らせることが出来る。視聴者は、遠隔制御2201上の選択ボタン2204を押すことによってiPreviewアラート1702に応答する。
再び図20を参照すると、本発明の好適な実施例は、TiVo受信機によって視聴者が見ることが出来るアクションになることが出来るアブストラクトTiVoタグを処理するためのメカニズムであるTSM(タグ・ステート・マシン)2006を提供する。
上述したように、タグを送信するために利用できる帯域幅には制約があるものと仮定されている。例えば、VBIは、厳しい競走下にある利用可能なスペースを制限した。信号の大部分の消費者が主にテレビ番組オプションに集中するであろうから、ディジタル・テレビジョン信号においてさえ、送信される帯域外データの量は、少ない。
全てのアブストラクト・タグは、一般的なインフラストラクチャを有する。以下のコンポーネントは、いかなるアブストラクト・タグ内にも存在する:
- タグ・タイプ(1バイト)
タイプ0は、認められない。ある将来の時点で、254より大きいタグ値が、必要とされる場合、タイプ255は、「エクステンション」タグを示す。
- タグ・シーケンス(1バイト)
この符号が付されていないフィールドは、シーケンスの一部である各タグのために増加される。シーケンスの一部でないタグは、このフィールドをゼロにセットしなければならない。一つのタグ・シーケンスは、新規のシーケンスの開始を示す; シーケンスは、概念的にいかなる長さとなることも出来るが、それは順番付けられた255以下のタグのセグメントで構成される。
各タグ・タイプは、暗示的なシーケンス長さ(ゼロとなることも可能である)を有する; シーケンス番号は、ストリームでのドロップアウトまたは他の形のタグ・ロスを取り扱うために導入される。一般に、シーケンス誤りが生じた場合、全てのタグ・シーケンスは破棄され、ステート・マシンのリセットが起きる。
タグは、物理的なドメイン内でチェックサムされるべきである。チェックサムがマッチしない場合、タグはソース・オブジェクトによって破棄される。これにより、シーケンス誤りとステート・マシンのリセットとなる。
- タグ・タイムスタンプ(8バイト)
これは、タグが、認識されたTVストリームの範囲内の同期時間である。この時間は、TiVo受信機によって発生される全ての他の提示時間に同期する。このコンポーネントは、決して送信されないが、受信機自身によって発生される。
-タグ・データ長(2バイト)
これは、タグと関連する任意のデータの長さである。このデータの解釈は、タグ・タイプに基づく。物理的なドメイン・トランスレータは、データ上のある最小のエラー検査を行うべきである。
TSMは、ビデオ再生とイン-ラインであるタグ提示メカニズム(Tag Presentation Mechanism)の一部である。
利用可能なTSMコマンドは、いくつかのクラスに分解することが出来る:
push_byte−スタック上へコマンドに続くバイトをプッシュする。
push_short−スタック上へコマンドに続くショートをプッシュする。
push_word−スタック上へコマンドに続くワードをプッシュする。
push_var−コマンドに続く16ビット量で名づけられた変数をプッシュする。
pop_var−コマンドに続く16ビット量で名づけられた変数へポップする。
copy_var−スタックからコマンドに続く16ビット量で名づけられた変数にコピーする。
swap−トップの2つのスタック値を交換する。
pop−トップのスタック値をトスする。
add_byte−コマンドに続く符号が付けられたバイトをスタックのトップに加える。
add_short−スタックのトップにコマンドに続く符号が付けられたショートを加える。
add_word−コマンドに続く符号が付けられたワードをスタックのトップに加える。
and−トップと次のスタック・エントリの論理積をとり、スタックをポップし、かつ新規の値をプッシュする。
or−トップと次のスタック・エントリの論理和をとり、スタックをポップし、かつ新規の値をプッシュする。
(符号が付けられていない比較のみ)
brif_zero−スタックのトップがゼロである場合、コマンドに続く符号が付けられた16ビットのオフセットに分岐する。
brif_nz−スタックのトップがゼロでない場合、コマンドに続く符号が付けられた16ビットのオフセットに分岐する。
brif_gt−スタックのトップが次のスタック・エントリより大きい場合、コマンドに続く符号が付けられた16ビットのオフセットに分岐する。
brif_ge−スタックのトップが次のスタック・エントリ以上の場合、コマンドに続く符号が付けられた16ビットのオフセットに分岐する。
brif_le−スタックのトップが次のスタック・エントリ以下の場合、コマンドに続く符号が付けられた16ビットのオフセットに分岐する。
brif_lt−スタックのトップが次のスタック・エントリ未満の場合、コマンドに続く符号が付けられた16ビットのオフセットに分岐する。
brif_set−ビットの組が、トップと次のスタックのエントリが一緒に論理積されるとき、コマンドに続く符号が付けられた16ビットのオフセットに分岐する。
exec−スタックのトップに名づけられたオブジェクトID上のタグ・アクションを実行する。
fin−アクションしていないタグを終了する。
32768 (TAG)-現在のタグの値。
GMT内の時間:
32769 (YEAR)-現在の年(0から)。
32770 (MONTH)-現在の月(1-12)。
32771 (DAY)-月の日(1-31)。
32772 (WDAY)-曜日(1-7、日曜日から開始)。
32773 (HOUR)-日の時間(0-23)。
32774 (MIN)-時間の分(0-59)。
32775 (SEC)-分の秒(0-59)。
32800 (SWREL)-ソフトウェア・リリース(バイト表記x.x.xで)。
32801 (NTWRK)-現在チューニングされたネットワークのオブジェクトID。
32802 (PRGRM)-現在チューニングされた番組のオブジェクトID。
32803 (PSTATE)-出力パイプラインの現在の状態:
1-一時停止
2-低速プレイ(slo-mo)
10-速度1での巻戻し
11-速度2での巻戻し
・・・
20-速度1での早送り(ff)
21-速度2での早送り(ff)
・・・
32900 (IND) -表示する、または取り込むためのインジケータ・ナンバ。
32901 (PDURING) -タグが実行する間のパイプラインの状態。
32902 (ALTP) -プレイ・スタックにプッシュする代替番組オブジェクトID。
32903 (SELOBJ) -インジケータが選択される場合、レコーディングするための番組オブジェクトID。
33000 (MENU1) -メニュ項目1のためのストリング・オブジェクト・ナンバ。
33001 (MENU2) -メニュ項目2のためのストリング・オブジェクト・ナンバ。
・・・
33009 (MENU10) -メニュ項目9のためのストリング・オブジェクト・ナンバ。
33100 (PlCT1) -メニュ項目1のためのピクチャ・オブジェクト・ナンバ。
33101 (PICT2) -メニュ項目2のためのピクチャ・オブジェクト・ナンバ。
・・・
33109 (PIOT10) -メニュ項目10のためのピクチャ・オブジェクト・ナンバ。
33200 (MSELOBJ1) -メニュ項目が選択される場合、レコーディングするための番組オブジェクトID。
33201 (MSELOBJ2) -メニュ項目が選択される場合、レコーディングするための番組オブジェクトID。
・・・
33209 (MSELOBJ10) -メニュ項目が選択される場合、レコーディングするための番組オブジェクトID。
- 代替番組をプッシュする
- 代替番組をポップする(番組の終了での自動ポップ)
- インジケータを上げる
- インジケータを下げる
- メニュ
実行ポリシは、TSMによって決定される。いくつかの候補は、以下の通りである:
- メニュ
標準TiVoメニュガイドラインに従ってメニュは配置される。一般に、メニュはライブのビデオに重なって現れる。項目の選択は、典型的にレコード・ダイアログを呼び出す。メニュ動作の間、パイプラインを一時停止することは、ベストであることができる。
- インジケータ
図17と22に示されるように、インジケータ1702は、小さいアイコンとしてのディスプレイの一番下に整列して並べられている。通常の視聴状態の間、遠隔制御2201上の上向き矢印と下向き矢印のキー2203は、何も行わない。インジケータに関し、上向き矢印2203は、インジケータを通して左に、下向き矢印は、右に円を描く。選択されたインジケータは、それを囲んで描かれる小さい四角を有する。プッシュ選択2204は、アクションを始める。新規のインジケータは、デフォルトで選択される; インジケータが消去されると、もしあれば、前に選択されたインジケータは強調表示される。
- 代替番組
代替番組は、ビデオ・ストリームの一部として現れ、かつ全部の早送り/巻き戻し(ff/rew)制御を有するべきである。ライブのボタン2202に対するスキップは、最初に空にするために代替番組スタックをポップする。
205 メディア・スイッチ
301 入力のMPEGストリーム
401 パーサ
501 イベント・バッファ
604 ロジカル・セグメント・ポイント
701 メディア・スイッチ
802 トランスフォーマ
917 制御オブジェクト
1004 格納媒体
1101 ソース
1203 循環バッファ
1307 VCR
1405 ビデオモニタ
1505 オペレータ
1601 オペレータ・インターフェース
1701 スクリーン
1802 サテライト
1901 ビデオ・ストリーム
2001 ソース・オブジェクト
2102 レコーディング項目メニュ
2202 選択ボタン
2302 メニュ画面
Claims (17)
- 受信機でメディア・ストリームを受信するステップであって、前記メディア・ストリームが、少なくとも、前記メディア・ストリーム内に複数のビデオ・フレームと複数のタグを備える、ステップと、
前記メディア・ストリーム内の1個以上の特定タグを検出するステップと、
前記1個以上の特定タグに基づいて、少なくとも前記メディア・ストリーム内のセグメントの開始ポイントと終了ポイントを識別するステップと、
前記メディア・ストリームを再生する間に、前記1個以上の特定タグに基づいて、前記セグメントの前記終了ポイントまで前記メディア・ストリームをスキップするステップと、
を備える方法であって、
前記方法が、1個以上のコンピューティング・デバイスにより実行される、
方法。 - 前記開始ポイントを示す、前記1個以上のタグの第一のタグまたは前記特定タグを検出することに応じて、前記セグメント全体を自動的にスキップするステップを、更に備える、請求項1に記載の方法。
- 前記スキップするステップが、視聴者の嗜好に基づいて自動的に行われる、請求項1に記載の方法。
- 遠隔デバイスからの入力に応じて、前記セグメントの前記終了ポイントまで前記メディア・ストリームをスキップするステップを、更に備える、請求項1に記載の方法。
- 前記1個以上の特定タグが、前記セグメントの前記開始ポイントと長さを示す1個のタグを備える、請求項1に記載の方法。
- 前記1個以上の特定タグが、前記開始ポイントを示す開始タグと前記終了ポイントを示す終了タグとを備える、請求項1に記載の方法。
- 前記開始タグと前記終了タグが、両者とも、前記セグメントに対して同じ固有の識別子を備える、請求項6に記載の方法。
- 前記開始タグが、前記受信機が前記終了ポイントを検索しようとする前記開始タグからの距離の制限を示す、請求項6に記載の方法。
- 前記受信機に結合されている1個以上の格納デバイスに前記メディア・ストリームをレコーディングするステップを備え、
前記メディア・ストリームの前記再生が、前記1個以上の格納デバイスから前記レコーディングされたメディア・ストリームを再生するステップを備える、
請求項1に記載の方法。 - 前記メディア・ストリームが、生中継のメディア・ストリームであって、前記方法が、更に、前記生中継のメディア・ストリームをバッファリングするステップを備え、
前記メディア・ストリームの前記再生が、前記バッファから前記生中継のメディア・ストリームを再生するステップを備える、
請求項1に記載の方法。 - 前記メディア・ストリーム内の前記セグメントの再生中に、遠隔デバイスから入力を受信するステップと、
前記入力に応じて、前記セグメントに関連する終了タグを検索するステップと、
前記終了タグに関連する終了フレームの直後のフレームから、前記メディア・ストリームの再生を再開するステップと
を備える請求項1に記載の方法。 - 前記セグメントを表示せずに、前記メディア・ストリームから番組マテリアルを巻き戻す間に、
前記セグメントの前記終了ポイントの終了タグを検出するステップと、
前記終了タグの検出に応じて、前記セグメントの前記開始ポイントの開始タグを探すステップと、
前記開始タグと前記終了タグとに基づいて前記セグメントをスキップするステップと
を備える、請求項1に記載の方法。 - 前記タグの各々が、前記メディア・ストリームの特定ビデオ・フレームに特有である、請求項1に記載の方法。
- 前記メディア・ストリームを受信するステップが、放送伝送、衛星伝送、ケーブル伝送、または他の通信伝送の内の一つにより前記メディア・ストリームを受信するステップを備える、請求項1に記載の方法。
- タグが、前記メディア・ストリームまたは私的データ・チャネルの字幕部分の一つに埋め込まれている、請求項1に記載の方法。
- 1個以上のコンピューティング・デバイスによって実行させるときに、請求項1〜15の何れか1項に記載の方法の少なくとも一つを実行させる命令を格納する1個以上の媒体。
- 請求項1〜15の何れか1項に記載の方法の少なくとも一つを実行するように構成されている受信機。
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JP2011253349A Pending JP2012075162A (ja) | 1999-09-20 | 2011-11-18 | クローズド・キャプション・タグ付システム |
JP2011253348A Pending JP2012075161A (ja) | 1999-09-20 | 2011-11-18 | クローズド・キャプション・タグ付システム |
JP2013156103A Pending JP2014003636A (ja) | 1999-09-20 | 2013-07-26 | クローズド・キャプション・タグ付システム |
JP2014004254A Pending JP2014112895A (ja) | 1999-09-20 | 2014-01-14 | クローズド・キャプション・タグ付システム |
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JP2001525965A Pending JP2003521851A (ja) | 1999-09-20 | 2000-09-20 | クローズド・キャプション・タグ付けシステム |
JP2011253349A Pending JP2012075162A (ja) | 1999-09-20 | 2011-11-18 | クローズド・キャプション・タグ付システム |
JP2011253348A Pending JP2012075161A (ja) | 1999-09-20 | 2011-11-18 | クローズド・キャプション・タグ付システム |
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CN (1) | CN100379273C (ja) |
AU (1) | AU7706500A (ja) |
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