JPH07508380A - ノイズの多い通信チャンネル上の送信のため圧縮ビデオデータを構成するための装置 - Google Patents
ノイズの多い通信チャンネル上の送信のため圧縮ビデオデータを構成するための装置Info
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- JPH07508380A JPH07508380A JP6502341A JP50234194A JPH07508380A JP H07508380 A JPH07508380 A JP H07508380A JP 6502341 A JP6502341 A JP 6502341A JP 50234194 A JP50234194 A JP 50234194A JP H07508380 A JPH07508380 A JP H07508380A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/65—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using error resilience
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
- H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
- H04N19/89—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving methods or arrangements for detection of transmission errors at the decoder
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/30—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability
- H04N19/39—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability involving multiple description coding [MDC], i.e. with separate layers being structured as independently decodable descriptions of input picture data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
Abstract
Description
Claims (13)
- 1.圧縮信号の各層が前記各層を記述するデータを含むヘッダーを含む階層化圧 縮ビデオ信号を送信するためのデジタルビデオ送信システムにおいて、各転送セ ルは、第二の予め決められた数Kのデータビットを含む転送セルヘッダーとN− Kデータビットの情報パケットとの間に分割された第一の予め決められた数Nの データビットを含み、前記転送セルヘッダーデータビットは対応する情報パケッ トの識別データビットのための情報を含む、前記階層化圧縮ビデオ信号を転送セ ルに分割するための装置であって、 階層化圧縮ビデオ信号(HLCVS)のソース(100)と、前記HLCVSの ヘッダーデータに応答して、少なくとも部分的に、前記転送セルヘッダーを生成 するための手段(105,110,125)と、 前記HLCVSに応答して、ヘッダーを含む前記HLCVSをN−Kデータビッ トより大きくない情報パケットに分割するための手段(115,125)と、前 記HLCVSのヘッダーデータに応答して、前記HLCVSの予め決められた形 式のヘッダーデータを含むN−Kデータビットより大きくない冗長情報パケット を生成するための手段(110,125)と、転送セルヘッダーと対応する情報 パケットとを連結し、転送セルを形成するための手段(120,125)と、お よび HLCVSデータの情報パケットを含む転送セルに、冗長情報パケットを含む転 送セルを散在させるための手段(110,120,125)と を具備する装置。
- 2.前記散在させる手段は、HLCVSデータの情報パケットを含む転送セル間 に散在させられた(冗長情報パケットを含む)転送セルの頻度を繰り返し減らす ための手段を含む請求の範囲第1項記載の装置。
- 3.前記HLCVSはMPEG標準に適合し、前記冗長情報パケットを生成する ための手段は、シーケンスヘッダーデータの冗長情報パケットと、画像グループ (GOP)ヘッダーと画像(PICT)ヘッダーデータの冗長情報パケットとを 生成する請求の範囲第1項記載の装置。
- 4.前記散在させる手段は、シーケンスヘッダーデータの冗長情報パケットを含 む予め決められた数の転送セルを連続して繰り返す請求の範囲第3項記載の装置 。
- 5.前記散在させる手段は、HLCVSデータの情報パケットを含む転送セル間 に散在させられた(冗長情報パケットを含む)転送セルの頻度を繰り返し減らす ための手段を含む請求の範囲第4項記載の装置。
- 6.前記HLCVSはフレーム内圧縮技術により圧縮されたビデオデータのフレ ームIと、フレーム間圧縮技術に従って圧縮されたビデオデータのフレーム(P ,B)とを含み、前記転送セルを散在させるための手段は、シーケンスヘッダー データの冗長情報パケットとGOPとPICTヘッダーデータの冗長情報パケッ トとを含む転送セルに、MHPEG(I)フレームデータの情報パケットを有す る転送セルを散在させ、GOP/PICTヘッダーデータだけの冗長情報パケッ トとを含む転送セルに、MPEG(B,P)フレームデータの情報パケットを有 する転送セルを散在させる請求の範囲第3項記載の装置。
- 7.前記冗長情報パケットを生成するための手段は、 前記HLCVS内で生起するヘッダーデータを格納するためのメモリ手段と、お よび 前記生成するための手段は、前記メモリ手段に格納されているヘッダーデータか ら冗長情報パケットを生成し、前記ヘッダーデータがN−Kデータビットより少 なく占有するならば、合計N−Kデータビットまで現在生起しているHLCVS データをそれに付随させる請求の範囲第1項記載の装置。
- 8.圧縮信号の各層が前記各層を記述するデータを含むヘッダーを含む階層化圧 縮ビデオ信号を送信するためのデジタルビデオ送信システムにおいて、各転送セ ルは、第二の予め決められた数Kのデータビットを含む転送セルヘッダーとN− Kデータビットの情報パケットとの間に分割された第一の予め決められた数Nの データビットを含み、前記転送セルヘッダーデータビットは対応する情報パケッ トの識別データビットのための情報を含む、前記階層化圧縮ビデオ信号を転送セ ルに分割するための装置であって、 前記圧縮ビデオ信号を固定長パケットに分割し(105,115,125)、各 パケットを転送セルに形成し(120,125)、前記圧縮ビデオ信号のヘッダ ーの予め決められた部分で冗長パケットを生成し(110,120,125)、 各冗長パケットを他の転送セルに形成し、および前記他の転送セルに頻度を減ら した前記転送セルを散在させるための手段 を具備する装置。
- 9.前記圧縮ビデオ信号は少なくとも2つの形式のフレーム内およびフレーム間 圧縮符号化に従ってフィールド/フレーム単位で圧縮され、前記他の転送セルに フレーム間圧縮ビデオ信号の前記転送セルが散在されている他に、前記他の転送 セルにフレーム内圧縮ビデオ信号の前記転送セルが散在されている請求の範囲第 8項記載の装置。
- 10.転送セルには圧縮ビデオ信号の予め決められた部分に対応する冗長データ を含む他の転送セルが散在させられ、前記転送セルと前記他の転送セルが転送セ ルヘッダーと情報パケットを含む、階層化圧縮ビデオ信号を転送セルで送信する ためのデジタルビデオ送信システムにおいて、 送信された前記転送セルと前記他の転送セルを受信し、前記転送セルヘッダーと 情報パケットを分離するための手段(200,210)と、 転送セルヘッダーデータに応答して、送信の間に喪失あるいは破壊された転送セ ルの生起を判定し、その生起の判定に応答して、前記他の転送セルのうちの1つ の生起まで、後続の生起している転送セルを破棄するための手段(205)と、 前記情報パケットに応答して、伸張ビデオ信号を生成するための伸張手段(22 )と を具備する受信装置。
- 11.喪失あるいは破壊された転送セルの生起時に前記転送セルのデータを前記 他の転送セルからのデータで置換するための手段を更に含む請求の範囲第10項 記載の受信装置。
- 12.前記他の転送セルに先行する転送セルが喪失されあるいは破壊されたとい う判定がなされなければ、前記他の転送セル内の前記冗長データを破棄するため の手段を更に含む請求の範囲第10項記載の受信装置。
- 13.前記転送セルヘッダーは、対応する送信された転送セルが圧縮ビデオ信号 を含むのか、あるいは前記冗長データを含むのかを示す印を含み、前記受信装置 は、前記印に応答して、各転送セルが圧縮ビデオ信号を含むのかあるいは冗長デ ータを含むのかを判定するための手段を含む請求の範囲第10項記載の受信装置 。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/901,045 US5289276A (en) | 1992-06-19 | 1992-06-19 | Method and apparatus for conveying compressed video data over a noisy communication channel |
US901,045 | 1992-06-19 | ||
PCT/US1993/004603 WO1994000952A1 (en) | 1992-06-19 | 1993-05-20 | Apparatus for arranging compressed video data for transmission over a noisy communication channel |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000150420A Division JP3507766B2 (ja) | 1992-06-19 | 2000-05-22 | 転送セルに圧縮されたビデオデータをフォーマットする方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07508380A true JPH07508380A (ja) | 1995-09-14 |
JP3267620B2 JP3267620B2 (ja) | 2002-03-18 |
Family
ID=25413511
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50234194A Expired - Lifetime JP3267620B2 (ja) | 1992-06-19 | 1993-05-20 | ノイズの多い通信チャンネル上の送信のため圧縮ビデオデータを構成するための装置 |
JP2000150420A Expired - Lifetime JP3507766B2 (ja) | 1992-06-19 | 2000-05-22 | 転送セルに圧縮されたビデオデータをフォーマットする方法 |
JP2003089239A Expired - Lifetime JP3572067B2 (ja) | 1992-06-19 | 2003-03-27 | 転送セルに圧縮されたビデオデータをフォーマットする方法 |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000150420A Expired - Lifetime JP3507766B2 (ja) | 1992-06-19 | 2000-05-22 | 転送セルに圧縮されたビデオデータをフォーマットする方法 |
JP2003089239A Expired - Lifetime JP3572067B2 (ja) | 1992-06-19 | 2003-03-27 | 転送セルに圧縮されたビデオデータをフォーマットする方法 |
Country Status (13)
Country | Link |
---|---|
US (4) | US5289276A (ja) |
EP (3) | EP0646306B1 (ja) |
JP (3) | JP3267620B2 (ja) |
KR (1) | KR100289559B1 (ja) |
CN (2) | CN1051429C (ja) |
CA (3) | CA2387254C (ja) |
DE (3) | DE69320812T2 (ja) |
ES (3) | ES2193427T3 (ja) |
FI (3) | FI112147B (ja) |
MX (1) | MX9303696A (ja) |
PT (2) | PT1263234E (ja) |
SG (3) | SG133401A1 (ja) |
WO (1) | WO1994000952A1 (ja) |
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