JP2021182744A5 - - Google Patents

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JP2021182744A5
JP2021182744A5 JP2021115585A JP2021115585A JP2021182744A5 JP 2021182744 A5 JP2021182744 A5 JP 2021182744A5 JP 2021115585 A JP2021115585 A JP 2021115585A JP 2021115585 A JP2021115585 A JP 2021115585A JP 2021182744 A5 JP2021182744 A5 JP 2021182744A5
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Japan
Prior art keywords
tiles
tile
frame
video
bitstream
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JP2021115585A
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JP2021182744A (ja
JP7204838B2 (ja
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Priority claimed from JP2020027790A external-priority patent/JP6914381B2/ja
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Priority to JP2022183234A priority Critical patent/JP7418533B2/ja
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Publication of JP7204838B2 publication Critical patent/JP7204838B2/ja
Priority to JP2024001116A priority patent/JP2024026650A/ja
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Claims (4)

  1. プロセッサ命令を含有する非一過性の機械可読媒体であって、プロセッサによる前記命令の実行は、前記プロセッサに、
    複数のフレームを備える符号化されたビデオビットストリームを受信することであって、各フレームは、前記フレーム内の複数の独立して符号化された圧縮単位を備え、前記圧縮単位は、高効率ビデオ符号化(HEVC)規格内のタイルであり、前記ビデオビットストリームは、前記HEVC規格に基づいて符号化される、ことと、
    タイルが有効にされているかを判定することと、
    フレームおよび/またはビットストリーム内のNAL(ネットワーク抽象化層)単位の構造を判定することと、
    前記ビデオビットストリーム内の前記タイルの構造を識別するために前記HEVCビデオビットストリームのピクチャパラメータセット(PPS)を解析することによって、NAL単位内の前記タイルの前記構造を判定することと、
    いくつかのNAL単位を選択することと、
    前記選択されたNAL単位の各々内のいくつかのタイルを選択することと、
    ビデオのフレームと関連付けられる前記PPSによって提供される前記構造に基づいて、前記符号化されたビデオビットストリーム内の複数のタイルの場所を判定することと、
    前記フレーム内の前記選択されたタイルの各々の少なくとも部分を暗号化することであって、前記タイルの部分は、前記タイルの前記構造に基づいて暗号化される、ことと、
    前記タイルの前記暗号化された部分を含む前記複数のタイルを備える出力ビットストリームを生成することと
    を含むプロセスを行わせる、非一過性の機械可読媒体。
  2. ビデオのフレームの中の各タイルの部分を暗号化することをさらに含み、好ましくは、前記部分は、i)前記タイルの最初のNバイト、ii)前記タイルの最後のNバイト、iii)前記タイル内のNバイトの中央部分、およびiv)前記タイル内のNバイトのパターンから成る群から選択される、請求項1に記載の非一過性の機械可読媒体。
  3. コンテンツエンコーダであって、
    メモリと通信するように構成されるプロセッサであって、メモリは、エンコーダアプリケーションを含有する、プロセッサ
    を備え、
    前記エンコーダアプリケーションは、前記プロセッサに、
    複数のフレームを備える符号化されたビデオビットストリームを受信することであって、各フレームは、前記フレーム内の複数の独立して符号化された圧縮単位を備え、前記圧縮単位は、高効率ビデオ符号化(HEVC)規格内のタイルであり、前記ビデオビットストリームは、前記HEVC規格に基づいて符号化される、ことと、
    タイルが有効にされているかを判定することと、
    フレームおよび/またはビットストリーム内のNAL(ネットワーク抽象化層)単位の構造を判定することと、
    前記ビデオビットストリーム内の前記タイルの構造を識別するために前記HEVCビデオビットストリームのピクチャパラメータセット(PPS)を解析することによって、NAL単位内の前記タイルの前記構造を判定することと、
    いくつかのNAL単位を選択することと、
    前記選択されたNAL単位の各々内のいくつかのタイルを選択することと、
    ビデオのフレームと関連付けられる前記PPSによって提供される前記構造に基づいて、前記符号化されたビデオビットストリーム内の複数のタイルの場所を判定することと、
    ビデオの前記フレーム内の前記選択されたタイルの各々の少なくとも部分を暗号化することであって、前記タイルの部分は、前記タイルの前記構造に基づいて暗号化される、ことと、
    前記タイルの前記暗号化された部分を含む前記複数のタイルを備える出力ビットストリームを生成することと
    を行うように指図する、コンテンツエンコーダ。
  4. 前記エンコーダアプリケーションはさらに、前記プロセッサに、ビデオのフレームの中の各タイルの部分を暗号化するように指図し、好ましくは、前記部分は、i)前記タイルの最初のNバイト、ii)前記タイルの最後のNバイト、iii)前記タイル内のNバイトの中央部分、およびiv)前記タイル内のNバイトのパターンから成る群から選択される、請求項3に記載のコンテンツエンコーダ。
JP2021115585A 2014-08-07 2021-07-13 独立的に符号化されたタイルを組み込む基本ビットストリームを保護するためのシステムおよび方法 Active JP7204838B2 (ja)

Priority Applications (2)

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JP2022183234A JP7418533B2 (ja) 2014-08-07 2022-11-16 独立的に符号化されたタイルを組み込む基本ビットストリームを保護するためのシステムおよび方法
JP2024001116A JP2024026650A (ja) 2014-08-07 2024-01-09 独立的に符号化されたタイルを組み込む基本ビットストリームを保護するためのシステムおよび方法

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US201462034714P 2014-08-07 2014-08-07
US62/034,714 2014-08-07
JP2020027790A JP6914381B2 (ja) 2014-08-07 2020-02-21 独立的に符号化されたタイルを組み込む基本ビットストリームを保護するためのシステムおよび方法

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JP2021182744A JP2021182744A (ja) 2021-11-25
JP2021182744A5 true JP2021182744A5 (ja) 2022-08-24
JP7204838B2 JP7204838B2 (ja) 2023-01-16

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JP2018099537A Active JP6666953B2 (ja) 2014-08-07 2018-05-24 独立的に符号化されたタイルを組み込む基本ビットストリームを保護するためのシステムおよび方法
JP2020027790A Active JP6914381B2 (ja) 2014-08-07 2020-02-21 独立的に符号化されたタイルを組み込む基本ビットストリームを保護するためのシステムおよび方法
JP2021115585A Active JP7204838B2 (ja) 2014-08-07 2021-07-13 独立的に符号化されたタイルを組み込む基本ビットストリームを保護するためのシステムおよび方法
JP2022183234A Active JP7418533B2 (ja) 2014-08-07 2022-11-16 独立的に符号化されたタイルを組み込む基本ビットストリームを保護するためのシステムおよび方法
JP2024001116A Pending JP2024026650A (ja) 2014-08-07 2024-01-09 独立的に符号化されたタイルを組み込む基本ビットストリームを保護するためのシステムおよび方法

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JP2018099537A Active JP6666953B2 (ja) 2014-08-07 2018-05-24 独立的に符号化されたタイルを組み込む基本ビットストリームを保護するためのシステムおよび方法
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US (4) US9762937B2 (ja)
EP (2) EP3134995B1 (ja)
JP (6) JP2017526228A (ja)
KR (5) KR20230156433A (ja)
CN (1) CN106664203B (ja)
CA (1) CA2952847A1 (ja)
ES (1) ES2908859T3 (ja)
MX (1) MX2016015022A (ja)
SG (1) SG11201609457UA (ja)
WO (1) WO2016022979A1 (ja)

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