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
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 DE69109722T priority patent/DE69109722T2/de
Priority to ES91850052T priority patent/ES2071969T3/es
Priority to EP91850052A priority patent/EP0448534B1/de
Priority to JP3081933A priority patent/JPH05115064A/ja
Priority to CA002038916A priority patent/CA2038916A1/en
Priority to US07/673,408 priority patent/US5243650A/en
Publication of SE464271B publication Critical patent/SE464271B/sv

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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 OR CALCULATING; 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 OR CALCULATING; 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)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Optimization (AREA)
  • General Engineering & Computer Science (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Computational Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Television Systems (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
DE69109722T DE69109722T2 (de) 1990-03-23 1991-03-19 Verfahren und Gerät zur Verschlüsselung/Entschlüsselung von digitalen multiplexen Tonsignalen bei der Fernsehübertragung.
ES91850052T ES2071969T3 (es) 1990-03-23 1991-03-19 Metodo y aparato para la encriptacion/desencriptacion de multisonido digital en television.
EP91850052A EP0448534B1 (de) 1990-03-23 1991-03-19 Verfahren und Gerät zur Verschlüsselung/Entschlüsselung von digitalen multiplexen Tonsignalen bei der Fernsehübertragung
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
CA002038916A CA2038916A1 (en) 1990-03-23 1991-03-22 Method and apparatus for encryption/decryption of digital multisound in television
US07/673,408 US5243650A (en) 1990-03-23 1991-03-22 Method and apparatus for encryption/decryption of digital multisound in 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 (2)

Publication Number Publication Date
SE9001078D0 SE9001078D0 (sv) 1990-03-23
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 (de)
EP (1) EP0448534B1 (de)
JP (1) JPH05115064A (de)
CA (1) CA2038916A1 (de)
DE (1) DE69109722T2 (de)
ES (1) ES2071969T3 (de)
SE (1) SE464271B (de)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5455860A (en) * 1992-04-17 1995-10-03 Matsushita Electric Industrial Co., Ltd. Scramble codec
US5377270A (en) * 1993-06-30 1994-12-27 United Technologies Automotive, Inc. Cryptographic authentication of transmitted messages using pseudorandom numbers
US5363448A (en) * 1993-06-30 1994-11-08 United Technologies Automotive, Inc. Pseudorandom number generation and cryptographic authentication
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.
EP0648031B1 (de) * 1993-10-12 2007-08-01 Matsushita Electric Industrial Co., Ltd. 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
ES2206594T3 (es) * 1995-10-31 2004-05-16 Koninklijke Philips Electronics N.V. Acceso condicional desplazado en el tiempo.
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
KR101299420B1 (ko) 2005-09-30 2013-08-29 프리스케일 세미컨덕터, 인크. Ｎｉｃａｍ 프로세서
US7653448B2 (en) * 2005-09-30 2010-01-26 Freescale Semiconductor, Inc. NICAM processing method
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
SE9001078D0 (sv) 1990-03-23
EP0448534A3 (en) 1992-03-18
ES2071969T3 (es) 1995-07-01
US5243650A (en) 1993-09-07
DE69109722D1 (de) 1995-06-22
CA2038916A1 (en) 1991-09-24
DE69109722T2 (de) 1995-12-21
EP0448534A2 (de) 1991-09-25
JPH05115064A (ja) 1993-05-07
EP0448534B1 (de) 1995-05-17

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