SE464271B - Foerfarande och anordning foer kryptering/dekryptering av digitalt flerljud i teve - Google Patents

Foerfarande och anordning foer kryptering/dekryptering av digitalt flerljud i teve

Info

Publication number
SE464271B
SE464271B SE9001078A SE9001078A SE464271B SE 464271 B SE464271 B SE 464271B SE 9001078 A SE9001078 A SE 9001078A SE 9001078 A SE9001078 A SE 9001078A SE 464271 B SE464271 B SE 464271B
Authority
SE
Sweden
Prior art keywords
control word
pseudo
random sequence
transmitted
generator
Prior art date
Application number
SE9001078A
Other languages
English (en)
Swedish (sv)
Other versions
SE9001078D0 (sv
SE9001078A (fr
Inventor
G Roth
Original Assignee
Televerket
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Televerket filed Critical Televerket
Priority to SE9001078A priority Critical patent/SE464271B/sv
Publication of SE9001078D0 publication Critical patent/SE9001078D0/xx
Priority to ES91850052T priority patent/ES2071969T3/es
Priority to DE69109722T priority patent/DE69109722T2/de
Priority to EP91850052A priority patent/EP0448534B1/fr
Priority to JP3081933A priority patent/JPH05115064A/ja
Priority to US07/673,408 priority patent/US5243650A/en
Priority to CA002038916A priority patent/CA2038916A1/fr
Publication of SE9001078A publication Critical patent/SE9001078A/xx
Publication of SE464271B publication Critical patent/SE464271B/sv

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/58—Random or pseudo-random number generators
    • G06F7/582—Pseudo-random number generators
    • G06F7/584—Pseudo-random number generators using finite field arithmetic, e.g. using a linear feedback shift register
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/02—Secret communication by adding a second signal to make the desired signal unintelligible
    • 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
    • H04N21/233—Processing of audio elementary streams
    • 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
    • H04N21/439—Processing of audio elementary streams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
    • H04N5/602—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals for digital sound signals
    • H04N5/605—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals for digital sound signals according to the NICAM system
    • 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
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2207/00—Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F2207/58—Indexing scheme relating to groups G06F7/58 - G06F7/588
    • G06F2207/581—Generating an LFSR sequence, e.g. an m-sequence; sequence may be generated without LFSR, e.g. using Galois Field arithmetic
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2207/00—Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F2207/58—Indexing scheme relating to groups G06F7/58 - G06F7/588
    • G06F2207/583—Serial finite field implementation, i.e. serial implementation of finite field arithmetic, generating one new bit or trit per step, e.g. using an LFSR or several independent LFSRs; also includes PRNGs with parallel operation between LFSR and outputs

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Analysis (AREA)
  • General Engineering & Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Television Systems (AREA)
  • Storage Device Security (AREA)
SE9001078A 1990-03-23 1990-03-23 Foerfarande och anordning foer kryptering/dekryptering av digitalt flerljud i teve SE464271B (sv)

Priority Applications (7)

Application Number Priority Date Filing Date Title
SE9001078A SE464271B (sv) 1990-03-23 1990-03-23 Foerfarande och anordning foer kryptering/dekryptering av digitalt flerljud i teve
ES91850052T ES2071969T3 (es) 1990-03-23 1991-03-19 Metodo y aparato para la encriptacion/desencriptacion de multisonido digital en television.
DE69109722T DE69109722T2 (de) 1990-03-23 1991-03-19 Verfahren und Gerät zur Verschlüsselung/Entschlüsselung von digitalen multiplexen Tonsignalen bei der Fernsehübertragung.
EP91850052A EP0448534B1 (fr) 1990-03-23 1991-03-19 Procédé et appareil à chiffrer/déchiffrer son digital multiplex dans la transmission de télévision
JP3081933A JPH05115064A (ja) 1990-03-23 1991-03-20 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
US07/673,408 US5243650A (en) 1990-03-23 1991-03-22 Method and apparatus for encryption/decryption of digital multisound in television
CA002038916A CA2038916A1 (fr) 1990-03-23 1991-03-22 Methode et dispositif de chiffrement-dechiffrement de signaux audio numeriques pour la television

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9001078A SE464271B (sv) 1990-03-23 1990-03-23 Foerfarande och anordning foer kryptering/dekryptering av digitalt flerljud i teve

Publications (3)

Publication Number Publication Date
SE9001078D0 SE9001078D0 (sv) 1990-03-23
SE9001078A SE9001078A (fr) 1991-03-25
SE464271B true SE464271B (sv) 1991-03-25

Family

ID=20378980

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9001078A SE464271B (sv) 1990-03-23 1990-03-23 Foerfarande och anordning foer kryptering/dekryptering av digitalt flerljud i teve

Country Status (7)

Country Link
US (1) US5243650A (fr)
EP (1) EP0448534B1 (fr)
JP (1) JPH05115064A (fr)
CA (1) CA2038916A1 (fr)
DE (1) DE69109722T2 (fr)
ES (1) ES2071969T3 (fr)
SE (1) SE464271B (fr)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69324188T2 (de) * 1992-04-17 1999-07-22 Matsushita Electric Ind Co Ltd Videorecorder
US5363448A (en) * 1993-06-30 1994-11-08 United Technologies Automotive, Inc. Pseudorandom number generation and cryptographic authentication
US5377270A (en) * 1993-06-30 1994-12-27 United Technologies Automotive, Inc. Cryptographic authentication of transmitted messages using pseudorandom numbers
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.
DE69435009T2 (de) * 1993-10-12 2008-04-17 Matsushita Electric Industrial Co., Ltd., Kadoma Einrichtung zur Verschlüsselung und Entschlüsselung von Audiosignalen
US5502767A (en) * 1994-05-27 1996-03-26 Sasuta; Michael Method for maintaining secure information synchronization on a control channel
US5606322A (en) * 1994-10-24 1997-02-25 Motorola, Inc. Divergent code generator and method
KR0152788B1 (ko) 1994-11-26 1998-10-15 이헌조 디지탈 영상 시스템의 복사 방지 방법 및 장치
KR0136458B1 (ko) 1994-12-08 1998-05-15 구자홍 디지탈 자기 기록재생 시스템의 복사 방지장치
EP0800745B1 (fr) * 1995-10-31 2003-09-17 Koninklijke Philips Electronics N.V. Acces conditionnel a decalage temporel
US5745522A (en) * 1995-11-09 1998-04-28 General Instrument Corporation Of Delaware Randomizer for byte-wise scrambling of data
FR2750554B1 (fr) * 1996-06-28 1998-08-14 Thomson Multimedia Sa Systeme a acces conditionnel et carte a puce permettant un tel acces
US5768374A (en) * 1996-08-06 1998-06-16 Transcrypt International Apparatus and method for continuous scrambling while transmitting or receiving synchronization data
ITVA20000030A1 (it) * 2000-08-11 2002-02-11 Siemens Inf & Comm Networks Metodo di trasmissione per garantire la confidenzialita' dei dati.
US20020118726A1 (en) * 2001-02-28 2002-08-29 Motorola, Inc System and electronic device for providing a spread spectrum signal
US7430262B2 (en) * 2001-03-19 2008-09-30 Defense Ultra Electronics Canada Inc. Frame synchronization method and system
US7142675B2 (en) * 2002-02-12 2006-11-28 City University Of Hong Kong Sequence generator and method of generating a pseudo random sequence
US7660982B1 (en) 2003-02-27 2010-02-09 Weinblatt Lee S Subscription broadcast security system
US7335021B2 (en) * 2003-09-22 2008-02-26 Stephen Gerard Nikodem Methods and apparatus to facilitate orthodontic alignment of teeth
US7653448B2 (en) * 2005-09-30 2010-01-26 Freescale Semiconductor, Inc. NICAM processing method
JP5140594B2 (ja) * 2005-09-30 2013-02-06 フリースケール セミコンダクター インコーポレイテッド Ｎｉｃａｍ処理方法
US7734044B2 (en) * 2006-02-23 2010-06-08 Texas Instruments Incorporated Method and apparatus for synchronous stream cipher encryption with reserved codes
US7873425B2 (en) * 2006-08-07 2011-01-18 Sigmatel, Inc. System and method of processing compressed audio data
US8533557B2 (en) * 2011-01-28 2013-09-10 Infineon Technologies Ag Device and method for error correction and protection against data corruption

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE25521E (en) * 1959-06-29 1964-02-11 Amplifier
US4389671A (en) * 1980-09-29 1983-06-21 Harris Corporation Digitally-controlled analog encrypton
US4628358A (en) * 1983-06-10 1986-12-09 General Instrument Corporation Television signal encryption system with protected audio
US4682360A (en) * 1983-12-22 1987-07-21 Frederiksen Jeffrey E Video transmission system
FR2580885B1 (fr) * 1985-04-19 1988-07-08 Radiotechnique Systeme pour la transmission secrete de signaux audio, et televiseur pour la reception de tels signaux
US4809274A (en) * 1986-09-19 1989-02-28 M/A-Com Government Systems, Inc. Digital audio companding and error conditioning
US4870682A (en) * 1987-02-25 1989-09-26 Household Data Services (Hds) Television scrambling system

Also Published As

Publication number Publication date
ES2071969T3 (es) 1995-07-01
EP0448534A2 (fr) 1991-09-25
JPH05115064A (ja) 1993-05-07
US5243650A (en) 1993-09-07
CA2038916A1 (fr) 1991-09-24
DE69109722D1 (de) 1995-06-22
SE9001078D0 (sv) 1990-03-23
SE9001078A (fr) 1991-03-25
EP0448534A3 (en) 1992-03-18
DE69109722T2 (de) 1995-12-21
EP0448534B1 (fr) 1995-05-17

Similar Documents

Publication Publication Date Title
SE464271B (sv) Foerfarande och anordning foer kryptering/dekryptering av digitalt flerljud i teve
JP3655921B2 (ja) 伝送地点において複数のサービスを一意的に暗号化するための方法及び装置
US8024580B2 (en) Transmitting apparatus, receiving apparatus, and data transmitting system
EP0157413B1 (fr) Système de transmission numérique comprenant un codeur/décodeur de correction d'erreurs et un brouilleur et un débrouilleur
US20060280298A1 (en) Rotation of keys during encryption/decryption
SE516660C2 (sv) Förfarande för kryptering och/eller dekryptering av FM- underbärvågsdata
US4431865A (en) Digital signal enciphering and deciphering apparatus and system
JPH065956B2 (ja) テレビジョン信号のスクランブル又はデスクランブル方法及びテレビジヨン受像機
JP2006100890A (ja) データ伝送方法およびデータ伝送システムならびにデータ送信装置およびデータ受信装置
JPH08242247A (ja) エラー検索およびフレーム復旧用の循環線路符号化装置
KR100930036B1 (ko) 암호화된 프레임의 다음 패킷 내의 중복된 스트림 암호 정보
JPH01248891A (ja) 暗号化鍵配送方式
KR100284482B1 (ko) 데이터 암호화 방법
US8144868B2 (en) Encryption/decryption of program data but not PSI data
KR100540316B1 (ko) 프레임에 삽입되는 데이터 요소를 처리하는 장치
JP2001285278A (ja) 暗号通信方法及び暗号通信システム
JPS58202644A (ja) ２進デイジタル信号の伝送方法
JP4115627B2 (ja) 限定受信方式の送信装置および受信装置
JP3008965B2 (ja) 暗号化通信装置及び暗号化伝送システム
JP2965294B2 (ja) ディジタルデータの暗号化装置
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
RU2518444C9 (ru) Способ организации и управления доступом к содержимому при иерархическом кодировании, процессор и блок передачи для осуществления способа
JP3723718B2 (ja) 受信装置
WO2003096611A1 (fr) Procede et dispositif de chiffrement/dechiffrement de donnees
CA1161513A (fr) Systeme de chiffrage et de dechiffrage de signaux numeriques

Legal Events

Date Code Title Description
NAL Patent in force

Ref document number: 9001078-6

Format of ref document f/p: F

NUG Patent has lapsed

Ref document number: 9001078-6

Format of ref document f/p: F