JP4611967B2 - 取外し可能な条件付きアクセスモジュールの縦続方法と、その方法を実行する所定のシーケンスの挿入回路及び検出回路 - Google Patents
取外し可能な条件付きアクセスモジュールの縦続方法と、その方法を実行する所定のシーケンスの挿入回路及び検出回路 Download PDFInfo
- Publication number
- JP4611967B2 JP4611967B2 JP2006351795A JP2006351795A JP4611967B2 JP 4611967 B2 JP4611967 B2 JP 4611967B2 JP 2006351795 A JP2006351795 A JP 2006351795A JP 2006351795 A JP2006351795 A JP 2006351795A JP 4611967 B2 JP4611967 B2 JP 4611967B2
- Authority
- JP
- Japan
- Prior art keywords
- module
- predetermined sequence
- packet
- decoder
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- 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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
- H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence
-
- 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
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2389—Multiplex stream processing, e.g. multiplex stream encrypting
- H04N21/23895—Multiplex stream processing, e.g. multiplex stream encrypting involving multiplex stream encryption
-
- 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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
- H04N21/4181—External card to be used in combination with the client device, e.g. for conditional access for conditional access
-
- 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
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
- H04N21/4385—Multiplex stream processing, e.g. multiplex stream decrypting
- H04N21/43853—Multiplex stream processing, e.g. multiplex stream decrypting involving multiplex stream decryption
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
- H04N7/163—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing by receiver means only
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Theoretical Computer Science (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Television Systems (AREA)
Description
各パケットの間に所定のシーケンスを組み込むデータストリームを第1の入力で受け、上記所定のシーケンスのデータを第2の入力で受ける比較器と、
上記比較器が不一致を検出したとき上記所定のシーケンスの最初のデータ項目を送出し、上記比較器が一致を検出したとき上記所定のシーケンスの次のデータ項目を送出するよう上記比較器の出力によりアドレス指定され、上記所定のシーケンスのデータを発生する手段と、
上記所定のシーケンス内の最後のデータの検出により作動され、上記パケットの長さに対応したパルスを発生する手段とからなる。
2,2’,6’ デマルチプレクサ
3,3’ デスクランブラ
4,4’,9’ マイクロプロセッサ
5,7’ ビデオ回路
5’ インタフェース
6,8’ オーディオ回路
7 チップカード
10’ 挿入回路
11’ 検出回路
100 マルチプレクサ
101 パケット境界検出回路
102,111 カウンタ
103,112 テーブル
110 比較器
113 パルス発生器
A,B 取外し可能なモジュール
BS 所定のシーケンスが与えられたデータストリーム
CB クロック
CW 制御語
FS 誤りのシーケンス
G1,G2,G3,G4 パケット間の間隔
N>16 パルス
P2,P3,P4 パケットの有効な内容
PC,PC0,PC1,PC2 パケットクロック
PF パケットパルス
S 高周波信号
TS,TS0,TS1,TS2,TS0’ データストリーム
Claims (4)
- マルチプレックス信号を処理する1以上のモジュールをデコーダ内でカスケード接続したとき、モジュール内でクロック信号を生成する方法であって、
前記デコーダにおいて、信号を受信するステップと、
前記デコーダにおいて、各パケットがパケットクロックによって検出される固定長のパケット間スペースによって分離される固定長のパケットにより構成されるデータトランスポートストリームを生成するため、前記信号を処理するステップと、
前記デコーダにおいて、モジュールに前記データトランスポートストリームを伝送する前に、前記パケット間スペースに固有の一定の所定のシーケンスを挿入することによって、前記データトランスポートストリームを変更するステップと、
前記デコーダから前記モジュールに前記変更されたデータトランスポートストリームを送信するステップと、
各モジュールにおいて、各モジュール内の動作を実行するために必要とされるパケットクロックを再生成するため、前記挿入された所定のシーケンスを検出して前記変更されたデータトランスポートストリームを処理するステップと、
から構成されることを特徴とする方法。 - 前記所定のシーケンスは、バイナリデータの増加系列又はバイナリデータの減少系列から構成される、請求項1記載の方法。
- 前記所定のシーケンスは、前記パケットのすべてのスタートにある規定された同一の値のデータアイテムを含む、請求項2記載の方法。
- 各モジュールは、スマートカード又はPCMCIAモジュールなどの外部の着脱可能な条件付アクセスモジュールである、請求項1乃至3何れか一項記載の方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9512850A FR2740636B1 (fr) | 1995-10-31 | 1995-10-31 | Procede permettant la mise en cascade de modules d'acces conditionnel detachables, circuit d'insertion d'une sequence predefinie et circuit de detection de ladite sequence pour la mise en oeuvre du procede |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP28706196A Division JP4338790B2 (ja) | 1995-10-31 | 1996-10-29 | シーケンス検出回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007135230A JP2007135230A (ja) | 2007-05-31 |
JP4611967B2 true JP4611967B2 (ja) | 2011-01-12 |
Family
ID=9484096
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP28706196A Expired - Fee Related JP4338790B2 (ja) | 1995-10-31 | 1996-10-29 | シーケンス検出回路 |
JP2006351795A Expired - Fee Related JP4611967B2 (ja) | 1995-10-31 | 2006-12-27 | 取外し可能な条件付きアクセスモジュールの縦続方法と、その方法を実行する所定のシーケンスの挿入回路及び検出回路 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP28706196A Expired - Fee Related JP4338790B2 (ja) | 1995-10-31 | 1996-10-29 | シーケンス検出回路 |
Country Status (9)
Country | Link |
---|---|
US (1) | US6396850B1 (ja) |
EP (1) | EP0772361B1 (ja) |
JP (2) | JP4338790B2 (ja) |
KR (1) | KR100433112B1 (ja) |
CN (1) | CN1085462C (ja) |
DE (1) | DE69620708T2 (ja) |
FR (1) | FR2740636B1 (ja) |
MY (1) | MY116684A (ja) |
ZA (1) | ZA968477B (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7263228B2 (ja) | 2019-12-20 | 2023-04-24 | 川崎重工業株式会社 | 雌型、金型、曲げ加工装置、および曲げ加工方法 |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7113523B1 (en) * | 1997-06-11 | 2006-09-26 | Sony Corporation | Data multiplexing device, program distribution system, program transmission system, pay broadcast system, program transmission method, conditional access system, and data reception device |
US8584255B2 (en) * | 1999-05-05 | 2013-11-12 | Sony United Kingdom Limited | Networked conditional access module |
US6694396B1 (en) * | 1999-06-18 | 2004-02-17 | Sony Corporation | Interfacing an NRSS-A smart card within an NRSS-B PCMCIA |
US7123307B1 (en) * | 2001-02-23 | 2006-10-17 | Silicon Image, Inc. | Clock jitter limiting scheme in video transmission through multiple stages |
WO2003107655A1 (fr) * | 2002-06-17 | 2003-12-24 | Scm Microsystems Gmbh | Procede et interface de communication entre un serveur et au moins un terminal-recepteur |
CN103152607B (zh) * | 2013-01-10 | 2016-10-12 | 上海思华科技股份有限公司 | 视频超快速粗编方法 |
CN105594219B (zh) * | 2014-07-31 | 2019-08-20 | Lg 电子株式会社 | 用于广播信号的发射/接收处理的设备和方法 |
EP4256793A1 (en) * | 2020-12-01 | 2023-10-11 | Arris Enterprises, Llc | Partial video async support using r-macphy device |
EP4285518A1 (en) * | 2021-02-01 | 2023-12-06 | Arris Enterprises, Llc | Adaptive video slew rate for video delivery |
WO2022235490A1 (en) * | 2021-05-03 | 2022-11-10 | Arris Enterprises Llc | System for channel map delivery for hi split cable networks |
US11700402B1 (en) * | 2022-03-25 | 2023-07-11 | Nvidia Corporation | Dynamically reducing stutter and latency in video streaming applications |
Citations (6)
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JPS58182342A (ja) * | 1982-04-19 | 1983-10-25 | Nec Corp | ル−プ回線制御処理装置 |
JPS63115438A (ja) * | 1986-10-31 | 1988-05-20 | Mitsubishi Cable Ind Ltd | 中継器 |
JPH0282828A (ja) * | 1988-09-20 | 1990-03-23 | Nec Corp | フレーム同期検出回路 |
JPH0310532A (ja) * | 1989-06-08 | 1991-01-18 | Toshiba Corp | 回線品質診断装置 |
JPH04292010A (ja) * | 1991-03-20 | 1992-10-16 | Sony Corp | 自動等化器 |
JPH0537511A (ja) * | 1991-07-30 | 1993-02-12 | Nec Corp | ユニークワード検出回路 |
Family Cites Families (16)
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GB2261580B (en) * | 1991-11-09 | 1996-02-28 | David Arends | Improvements in or relating to the decoding of signals |
DE69310255T2 (de) * | 1992-03-04 | 1997-08-14 | Thomson Multimedia Sa | Methode und Vorrichtung zur Kontrolle mehrerer Chipkarten |
US5418784A (en) * | 1993-06-30 | 1995-05-23 | Digital Equipment Corporation | Method and apparatus for use in a network of the ethernet type, to improve fairness by controlling the interpacket gap in the event of channel capture |
FI95756C (fi) * | 1994-03-21 | 1996-03-11 | Nokia Technology Gmbh | Menetelmä digitaalista informaatiota sisältävän bittivirran salaamiseksi ja salauksen purkamiseksi |
US5619501A (en) * | 1994-04-22 | 1997-04-08 | Thomson Consumer Electronics, Inc. | Conditional access filter as for a packet video signal inverse transport system |
US5473385A (en) * | 1994-06-07 | 1995-12-05 | Tv/Com Technologies, Inc. | Clock correction in a video data decoder using video synchronization signals |
US5652627A (en) * | 1994-09-27 | 1997-07-29 | Lucent Technologies Inc. | System and method for reducing jitter in a packet-based transmission network |
US5619337A (en) * | 1995-01-27 | 1997-04-08 | Matsushita Electric Corporation Of America | MPEG transport encoding/decoding system for recording transport streams |
US5533021A (en) * | 1995-02-03 | 1996-07-02 | International Business Machines Corporation | Apparatus and method for segmentation and time synchronization of the transmission of multimedia data |
US5588025A (en) * | 1995-03-15 | 1996-12-24 | David Sarnoff Research Center, Inc. | Single oscillator compressed digital information receiver |
US5561791A (en) * | 1995-04-10 | 1996-10-01 | Digital Equipment Corporation | Method and apparatus for conditioning timed program independent of transport timing |
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US5790543A (en) * | 1995-09-25 | 1998-08-04 | Bell Atlantic Network Services, Inc. | Apparatus and method for correcting jitter in data packets |
US5812554A (en) * | 1996-05-28 | 1998-09-22 | Advanced Micro Devices, Inc. | Efficiency of a network having a minimum data transmission time |
US5870398A (en) * | 1996-08-20 | 1999-02-09 | International Business Machines Corporation | Introducing inter-packet gaps in network transmissions |
-
1995
- 1995-10-31 FR FR9512850A patent/FR2740636B1/fr not_active Expired - Fee Related
-
1996
- 1996-09-24 US US08/718,823 patent/US6396850B1/en not_active Expired - Lifetime
- 1996-10-08 ZA ZA968477A patent/ZA968477B/xx unknown
- 1996-10-11 EP EP96402158A patent/EP0772361B1/fr not_active Expired - Lifetime
- 1996-10-11 DE DE69620708T patent/DE69620708T2/de not_active Expired - Lifetime
- 1996-10-18 CN CN96112439A patent/CN1085462C/zh not_active Expired - Lifetime
- 1996-10-29 KR KR1019960049369A patent/KR100433112B1/ko not_active IP Right Cessation
- 1996-10-29 JP JP28706196A patent/JP4338790B2/ja not_active Expired - Fee Related
- 1996-10-30 MY MYPI96004521A patent/MY116684A/en unknown
-
2006
- 2006-12-27 JP JP2006351795A patent/JP4611967B2/ja not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58182342A (ja) * | 1982-04-19 | 1983-10-25 | Nec Corp | ル−プ回線制御処理装置 |
JPS63115438A (ja) * | 1986-10-31 | 1988-05-20 | Mitsubishi Cable Ind Ltd | 中継器 |
JPH0282828A (ja) * | 1988-09-20 | 1990-03-23 | Nec Corp | フレーム同期検出回路 |
JPH0310532A (ja) * | 1989-06-08 | 1991-01-18 | Toshiba Corp | 回線品質診断装置 |
JPH04292010A (ja) * | 1991-03-20 | 1992-10-16 | Sony Corp | 自動等化器 |
JPH0537511A (ja) * | 1991-07-30 | 1993-02-12 | Nec Corp | ユニークワード検出回路 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7263228B2 (ja) | 2019-12-20 | 2023-04-24 | 川崎重工業株式会社 | 雌型、金型、曲げ加工装置、および曲げ加工方法 |
Also Published As
Publication number | Publication date |
---|---|
EP0772361A1 (fr) | 1997-05-07 |
JP2007135230A (ja) | 2007-05-31 |
JPH09200267A (ja) | 1997-07-31 |
JP4338790B2 (ja) | 2009-10-07 |
MY116684A (en) | 2004-03-31 |
CN1154035A (zh) | 1997-07-09 |
KR970025120A (ko) | 1997-05-30 |
FR2740636A1 (fr) | 1997-04-30 |
DE69620708D1 (de) | 2002-05-23 |
KR100433112B1 (ko) | 2004-08-25 |
EP0772361B1 (fr) | 2002-04-17 |
DE69620708T2 (de) | 2002-10-31 |
MX9604442A (es) | 1998-05-31 |
US6396850B1 (en) | 2002-05-28 |
FR2740636B1 (fr) | 1997-11-28 |
CN1085462C (zh) | 2002-05-22 |
ZA968477B (en) | 1997-05-20 |
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