JP2911595B2 - 複合画像信号のスクランブル化／スクランブル複調化方法およびその実施化装置 - Google Patents
複合画像信号のスクランブル化／スクランブル複調化方法およびその実施化装置Info
- Publication number
- JP2911595B2 JP2911595B2 JP2501072A JP50107289A JP2911595B2 JP 2911595 B2 JP2911595 B2 JP 2911595B2 JP 2501072 A JP2501072 A JP 2501072A JP 50107289 A JP50107289 A JP 50107289A JP 2911595 B2 JP2911595 B2 JP 2911595B2
- Authority
- JP
- Japan
- Prior art keywords
- pseudo
- scrambling
- random sequence
- data
- video signal
- 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 - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000002131 composite material Substances 0.000 title abstract description 11
- 102100031758 Extracellular matrix protein 1 Human genes 0.000 claims abstract description 15
- 101000866526 Homo sapiens Extracellular matrix protein 1 Proteins 0.000 claims abstract description 15
- 102100023077 Extracellular matrix protein 2 Human genes 0.000 claims abstract description 13
- 101001050211 Homo sapiens Extracellular matrix protein 2 Proteins 0.000 claims abstract description 13
- 230000001419 dependent effect Effects 0.000 claims 1
- 239000000284 extract Substances 0.000 claims 1
- 230000002452 interceptive effect Effects 0.000 abstract description 2
- 238000012545 processing Methods 0.000 description 26
- 230000005540 biological transmission Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 230000003993 interaction Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Television Systems (AREA)
- Electrostatic Separation (AREA)
- Television Signal Processing For Recording (AREA)
- Glass Compositions (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR88/17092 | 1988-12-23 | ||
| FR8817092A FR2641152B1 (enExample) | 1988-12-23 | 1988-12-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03504313A JPH03504313A (ja) | 1991-09-19 |
| JP2911595B2 true JP2911595B2 (ja) | 1999-06-23 |
Family
ID=9373355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2501072A Expired - Lifetime JP2911595B2 (ja) | 1988-12-23 | 1989-12-08 | 複合画像信号のスクランブル化／スクランブル複調化方法およびその実施化装置 |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP0375539B1 (enExample) |
| JP (1) | JP2911595B2 (enExample) |
| AT (1) | ATE118950T1 (enExample) |
| BR (1) | BR8907275A (enExample) |
| CA (1) | CA2006459A1 (enExample) |
| DE (1) | DE68921316T2 (enExample) |
| ES (1) | ES2070188T3 (enExample) |
| FR (1) | FR2641152B1 (enExample) |
| MX (1) | MX172194B (enExample) |
| NZ (1) | NZ232005A (enExample) |
| WO (1) | WO1990007845A1 (enExample) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9003325D0 (en) * | 1990-02-14 | 1990-04-11 | Enfranchise Sixty Ltd | Apparatus and method for controlling access to broadcast signals |
| FR2703552A1 (fr) * | 1993-03-31 | 1994-10-07 | Philips Electronics Nv | Procédé et dispositif pour l'embrouillage et le désembrouillage d'une émission déterminée de télévision. |
| FR2750554B1 (fr) * | 1996-06-28 | 1998-08-14 | Thomson Multimedia Sa | Systeme a acces conditionnel et carte a puce permettant un tel acces |
| IL123554A (en) | 1998-03-04 | 2003-01-12 | Nds Ltd | Key delivery in a secure broadcasting system |
| HU228951B1 (en) | 1998-07-20 | 2013-07-29 | Thomson Licensing Sa | Navigation system for a multichannel digital television system |
| FR2804272B1 (fr) * | 2000-01-25 | 2003-08-01 | Tonna Electronique | Systeme de controle d'acces d'un utilisateur a des programmes videos, transcodeur, decodeur et procede de controle d'acces d'un tel systeme |
| AU2001256645A1 (en) | 2000-05-22 | 2001-12-03 | Nds Limited | Dynamically shifting control word |
| EP2230845A1 (en) * | 2009-03-16 | 2010-09-22 | Irdeto Access B.V. | Providing control words to a receiver |
| CN111310220B (zh) * | 2020-03-12 | 2023-07-28 | 四川大学 | 基于新型三维矢量分解的彩色图像加密方法 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1253616A (en) * | 1982-07-29 | 1989-05-02 | Robert W. Field | Secure coding and decoding system and method for television program signals |
| GB2143352A (en) * | 1983-07-15 | 1985-02-06 | Philips Electronic Associated | Authorising coded signals |
| GB2151886A (en) * | 1983-12-21 | 1985-07-24 | British Broadcasting Corp | Conditional-access broadcast transmission |
-
1988
- 1988-12-23 FR FR8817092A patent/FR2641152B1/fr not_active Expired - Fee Related
-
1989
- 1989-12-08 JP JP2501072A patent/JP2911595B2/ja not_active Expired - Lifetime
- 1989-12-08 WO PCT/FR1989/000636 patent/WO1990007845A1/fr not_active Ceased
- 1989-12-08 BR BR898907275A patent/BR8907275A/pt not_active IP Right Cessation
- 1989-12-19 AT AT89403552T patent/ATE118950T1/de not_active IP Right Cessation
- 1989-12-19 DE DE68921316T patent/DE68921316T2/de not_active Expired - Fee Related
- 1989-12-19 EP EP89403552A patent/EP0375539B1/fr not_active Expired - Lifetime
- 1989-12-19 ES ES89403552T patent/ES2070188T3/es not_active Expired - Lifetime
- 1989-12-21 CA CA002006459A patent/CA2006459A1/fr not_active Abandoned
- 1989-12-21 MX MX018840A patent/MX172194B/es unknown
-
1990
- 1990-01-04 NZ NZ232005A patent/NZ232005A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP0375539B1 (fr) | 1995-02-22 |
| DE68921316D1 (de) | 1995-03-30 |
| BR8907275A (pt) | 1991-03-12 |
| NZ232005A (en) | 1991-11-26 |
| FR2641152B1 (enExample) | 1996-05-10 |
| ATE118950T1 (de) | 1995-03-15 |
| CA2006459A1 (fr) | 1990-06-23 |
| JPH03504313A (ja) | 1991-09-19 |
| EP0375539A1 (fr) | 1990-06-27 |
| FR2641152A1 (enExample) | 1990-06-29 |
| DE68921316T2 (de) | 1995-08-31 |
| MX172194B (es) | 1993-12-07 |
| ES2070188T3 (es) | 1995-06-01 |
| WO1990007845A1 (fr) | 1990-07-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5224161A (en) | Method of scrambling and of unscrambling composite video signals, and device for implementation | |
| US4864614A (en) | Authorising coded signals | |
| US5208856A (en) | Scrambling and unscrambling method for composite video signals and implementing device | |
| US4802215A (en) | Security system for television signal encryption | |
| US6671881B1 (en) | Conditional access filter as for a packet video signal inverse transport system | |
| US4523228A (en) | Sync suppression scrambling of television signals for subscription TV | |
| FI89545C (fi) | Metod och apparat foer oeverfoering av video, ton, teletext och data till grupper av avkodare i ett kommunikationssystem | |
| US5764773A (en) | Repeating device, decoder device and concealment broadcasting | |
| EP0200310B1 (en) | Direct broadcast satellite signal transmission system | |
| US5563948A (en) | Process for authentication of smart cards, and device for use of the process | |
| US4829569A (en) | Communication of individual messages to subscribers in a subscription television system | |
| JPS62503066A (ja) | テレビジョン信号のスクランブルおよびデスクランブル措置の方法および装置 | |
| FI85206B (fi) | Aoterstaellande av ramlaosningen i telekommunikationssystem. | |
| JPS58501982A (ja) | 加入衛星テレビジヨン暗号化用防護装置 | |
| US4796297A (en) | Device for calculating a charge for a charged information signal with errors avoided in a report of the charge | |
| JPH05115064A (ja) | テレビ放送におけるデイジタルマルチサウンドの暗号化および暗号解読のための方法および装置 | |
| JP2911595B2 (ja) | 複合画像信号のスクランブル化／スクランブル複調化方法およびその実施化装置 | |
| KR890004439B1 (ko) | 스크램블된 유료방송프로그램 수신기 | |
| US4817144A (en) | Secure TV scrambling system using framing code switching | |
| Guillou et al. | Encipherment and conditional access | |
| RU2103837C1 (ru) | Способ кодирования видеосигнала от несанкционированного доступа | |
| EP1009126A1 (en) | Device for generating a descrambling signal | |
| US20050068952A1 (en) | Conditional access filter as for a packet video signal inverse transport system | |
| KR0160456B1 (ko) | 합성 비디오 신호 스크램블링 및 언 스크램블링 방법과 그 장치 | |
| JPH04360438A (ja) | データ伝送方法 |