ES8600595A1 - Una instalacion de transmision de television - Google Patents
Una instalacion de transmision de televisionInfo
- Publication number
- ES8600595A1 ES8600595A1 ES533506A ES533506A ES8600595A1 ES 8600595 A1 ES8600595 A1 ES 8600595A1 ES 533506 A ES533506 A ES 533506A ES 533506 A ES533506 A ES 533506A ES 8600595 A1 ES8600595 A1 ES 8600595A1
- Authority
- ES
- Spain
- Prior art keywords
- sound
- pseudo random
- scrambled
- scrambling
- output
- 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
Links
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)
Abstract
PERFECCIONAMIENTO E UNA INSTALACION DE TRANSMISION DE TELEVISION.CONSISTENTES EN: UNA SEN/AL DE TELEVISION QUE CONTIENE ADICIONALMENTE COMPONENTES DE SONIDO O DE DATOS MODULADOS DIGITALMENTE QUE SON MULTIPLEXADOS EN PAQUETES QUE SON MULTIPLEXADOS POR DIVISION DEL TIEMPO DENTRO DE PERIODOS ASIGNADOS A LA SEN/AL DE TELEVISION; UN COMPONENTE DE SONIDO/DATOS CODIFICADO SECRETAMENTE PARA PERMITIR SOLO LA RECEPCION AUTORIZADA, ESTANDO PREVISTA UNA CLAVE DE CODIFICACION SECRETA EN PAQUETE PARA LOS PAQUETES DE SONIDO/DATOS, QUE COMPRENDE UNA SEGUNDA SEN/AL DE IMPULSO QUE TIENE UNA SEGUNDA CONFIGURACION SEUDO-ALEATORIA GENERADA A UN SEGUNDO REGIMEN QUE SE CORRESPONDE CON EL REGIMEN EN QUE APARECEN LOS PAQUETES.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08316751A GB2141905A (en) | 1983-06-20 | 1983-06-20 | Secure transmission system |
Publications (2)
Publication Number | Publication Date |
---|---|
ES8600595A1 true ES8600595A1 (es) | 1985-09-16 |
ES533506A0 ES533506A0 (es) | 1985-09-16 |
Family
ID=10544510
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES533506A Granted ES533506A0 (es) | 1983-06-20 | 1984-06-18 | Una instalacion de transmision de television |
ES541817A Expired ES8608763A1 (es) | 1983-06-20 | 1985-04-01 | Un equipo de transmision de television, destinado a generar una senal de television |
ES541818A Expired ES8608764A1 (es) | 1983-06-20 | 1985-04-01 | Un equipo receptor de television,en el que los componentes de imagen de una senal de television estan codificados se- cretamente |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES541817A Expired ES8608763A1 (es) | 1983-06-20 | 1985-04-01 | Un equipo de transmision de television, destinado a generar una senal de television |
ES541818A Expired ES8608764A1 (es) | 1983-06-20 | 1985-04-01 | Un equipo receptor de television,en el que los componentes de imagen de una senal de television estan codificados se- cretamente |
Country Status (9)
Country | Link |
---|---|
US (1) | US4636854A (es) |
EP (1) | EP0131983B1 (es) |
JP (1) | JP2563895B2 (es) |
CA (1) | CA1228153A (es) |
DE (1) | DE3483125D1 (es) |
ES (3) | ES533506A0 (es) |
FI (1) | FI76660C (es) |
GB (1) | GB2141905A (es) |
HK (1) | HK125493A (es) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4965825A (en) | 1981-11-03 | 1990-10-23 | The Personalized Mass Media Corporation | Signal processing apparatus and methods |
US7831204B1 (en) | 1981-11-03 | 2010-11-09 | Personalized Media Communications, Llc | Signal processing apparatus and methods |
USRE47642E1 (en) | 1981-11-03 | 2019-10-08 | Personalized Media Communications LLC | Signal processing apparatus and methods |
US4890321A (en) * | 1986-07-08 | 1989-12-26 | Scientific Atlanta, Inc. | Communications format for a subscription television system permitting transmission of individual text messages to subscribers |
US4866770A (en) * | 1986-07-08 | 1989-09-12 | Scientific Atlanta, Inc. | Method and apparatus for communication of video, audio, teletext, and data to groups of decoders in a communication system |
NZ237080A (en) * | 1990-03-07 | 1993-05-26 | Ericsson Telefon Ab L M | Continuous synchronisation for duplex encrypted digital cellular telephony |
US5581614A (en) * | 1991-08-19 | 1996-12-03 | Index Systems, Inc. | Method for encrypting and embedding information in a video program |
GB2400496B (en) * | 1991-12-11 | 2005-02-09 | Marconi Gec Ltd | Signal processing apparatus |
JPH0552029U (ja) * | 1991-12-25 | 1993-07-09 | 森村金属株式会社 | 格子組天井の目地カバーの取付構造 |
FR2710223A1 (fr) * | 1993-09-15 | 1995-03-24 | Philips Electronics Nv | Procédé pour l'embrouillage et le désembrouillage en télévision, et émetteur et récepteur utilisant ce procédé. |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1429469A (en) * | 1961-07-19 | 1976-03-24 | Hell Rudolf | Method for subsequently setting data receivers in a contrinuous transmission of encoded data transmitted in binary code form |
JPS51115718A (en) * | 1975-02-24 | 1976-10-12 | Pioneer Electronic Corp | Bi-directional catv system |
CA1097794A (en) * | 1975-08-08 | 1981-03-17 | Harold B. Shutterly | Secure television transmission system |
FR2431809A1 (fr) * | 1978-07-20 | 1980-02-15 | Telediffusion Fse | Procedes et dispositifs de brouillage et de debrouillage pour images de television |
US4266243A (en) * | 1979-04-25 | 1981-05-05 | Westinghouse Electric Corp. | Scrambling system for television sound signals |
US4318125A (en) * | 1979-04-25 | 1982-03-02 | Westinghouse Electric Corp. | Solid state digital audio scrambler system for teletransmission of audio intelligence through a television system |
FR2459595A1 (fr) * | 1979-06-15 | 1981-01-09 | Telediffusion Fse | Systeme de television a controle d'acces utilisant une cle electronique variable |
US4424532A (en) * | 1980-05-14 | 1984-01-03 | Oak Industries Inc. | Coding and decoding system for video and audio signals |
US4353088A (en) * | 1980-05-14 | 1982-10-05 | Oak Industries, Inc. | Coding and decoding system for video and audio signals |
US4484027A (en) * | 1981-11-19 | 1984-11-20 | Communications Satellite Corporation | Security system for SSTV encryption |
US4547802A (en) * | 1983-04-29 | 1985-10-15 | Westinghouse Electric Corp. | TV Scrambler/descrambler using serial memories |
-
1983
- 1983-06-20 GB GB08316751A patent/GB2141905A/en not_active Withdrawn
-
1984
- 1984-06-13 CA CA000456474A patent/CA1228153A/en not_active Expired
- 1984-06-15 FI FI842436A patent/FI76660C/fi not_active IP Right Cessation
- 1984-06-18 ES ES533506A patent/ES533506A0/es active Granted
- 1984-06-19 EP EP84200886A patent/EP0131983B1/en not_active Expired - Lifetime
- 1984-06-19 DE DE8484200886T patent/DE3483125D1/de not_active Expired - Lifetime
- 1984-06-20 US US06/622,503 patent/US4636854A/en not_active Expired - Lifetime
- 1984-06-20 JP JP59125395A patent/JP2563895B2/ja not_active Expired - Lifetime
-
1985
- 1985-04-01 ES ES541817A patent/ES8608763A1/es not_active Expired
- 1985-04-01 ES ES541818A patent/ES8608764A1/es not_active Expired
-
1993
- 1993-11-11 HK HK1254/93A patent/HK125493A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JP2563895B2 (ja) | 1996-12-18 |
FI842436A0 (fi) | 1984-06-15 |
ES541818A0 (es) | 1986-06-16 |
HK125493A (en) | 1993-11-19 |
FI842436A (fi) | 1984-12-21 |
EP0131983A2 (en) | 1985-01-23 |
EP0131983A3 (en) | 1986-03-19 |
ES8608764A1 (es) | 1986-06-16 |
FI76660C (fi) | 1988-11-10 |
DE3483125D1 (de) | 1990-10-11 |
EP0131983B1 (en) | 1990-09-05 |
ES533506A0 (es) | 1985-09-16 |
GB2141905A (en) | 1985-01-03 |
ES541817A0 (es) | 1986-06-16 |
JPS6014586A (ja) | 1985-01-25 |
FI76660B (fi) | 1988-07-29 |
CA1228153A (en) | 1987-10-13 |
ES8608763A1 (es) | 1986-06-16 |
US4636854A (en) | 1987-01-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0132007B1 (en) | Authorising coded signals | |
EP0720326A3 (en) | Method for secure session key generation | |
JPH06125554A (ja) | 加入衛星テレビジョン暗号化用防護方法 | |
KR920702158A (ko) | 텔레비젼 신호 디코더용 외부 보안 모듈 | |
ES8608764A1 (es) | Un equipo receptor de television,en el que los componentes de imagen de una senal de television estan codificados se- cretamente | |
FI962106A (fi) | Menetelmä ja laitteisto puheen salaamiseksi ja salauksen purkamiseksi puheen siirrossa | |
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 | |
AU559403B2 (en) | Video encryption system | |
GB2132857A (en) | Voice encryption and decryption system | |
US7512237B1 (en) | Encryption for optical communications using dynamic subcarrier multiplexing | |
JPH07154772A (ja) | スクランブルおよびデスクランブルする方法、テレビジョン送信機および受信機 | |
DE3360921D1 (en) | Broadcasting encrypted signals | |
JPH06169307A (ja) | 符号化装置及び復号化装置 | |
EP0129299A3 (en) | Secure television transmission system | |
KR0129295Y1 (ko) | 카운터를 이용한 영상신호용 수평동기신호 발생장치 | |
JP2581138B2 (ja) | 秘密通信同期方式 | |
JPH046142B2 (es) | ||
JPH0241089A (ja) | 秘画送受信方式 | |
KR0185987B1 (ko) | 스크램블/디스크램블 장치 | |
KR970002969B1 (ko) | 암호화된 방송신호의 처리장치 | |
JPH03239033A (ja) | スクランブル方式及びスクランブル信号の受信装置 | |
JPH05191401A (ja) | 暗号化通信方法 | |
JPS645242A (en) | Bit scramble circuit | |
JPS6423276A (en) | Enciphering system for digital data | |
JPH08163098A (ja) | 帯域分割符号化を用いた音声データ圧縮システムの効果制御付き音声スクランブル装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PC1A | Transfer granted | ||
FD1A | Patent lapsed |
Effective date: 20050518 |