FR2551235B1 - Generateur de sequences numeriques pseudoaleatoires - Google Patents

Generateur de sequences numeriques pseudoaleatoires

Info

Publication number
FR2551235B1
FR2551235B1 FR8313540A FR8313540A FR2551235B1 FR 2551235 B1 FR2551235 B1 FR 2551235B1 FR 8313540 A FR8313540 A FR 8313540A FR 8313540 A FR8313540 A FR 8313540A FR 2551235 B1 FR2551235 B1 FR 2551235B1
Authority
FR
France
Prior art keywords
pseudoaleatory
sequence generator
digital sequence
digital
generator
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
Application number
FR8313540A
Other languages
English (en)
Other versions
FR2551235A1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Radiotechnique SA
Original Assignee
Radiotechnique SA
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 Radiotechnique SA filed Critical Radiotechnique SA
Priority to FR8313540A priority Critical patent/FR2551235B1/fr
Priority to DE8383201780T priority patent/DE3371947D1/de
Priority to EP83201780A priority patent/EP0115097B1/fr
Publication of FR2551235A1 publication Critical patent/FR2551235A1/fr
Application granted granted Critical
Publication of FR2551235B1 publication Critical patent/FR2551235B1/fr
Priority to US06/810,529 priority patent/US4649419A/en
Expired legal-status Critical Current

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
    • 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
    • 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)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
FR8313540A 1982-12-20 1983-08-22 Generateur de sequences numeriques pseudoaleatoires Expired FR2551235B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR8313540A FR2551235B1 (fr) 1983-08-22 1983-08-22 Generateur de sequences numeriques pseudoaleatoires
DE8383201780T DE3371947D1 (en) 1982-12-20 1983-12-15 Generator of random number sequences
EP83201780A EP0115097B1 (fr) 1982-12-20 1983-12-15 Générateur de séquences numériques pseudoaléatoires
US06/810,529 US4649419A (en) 1982-12-20 1985-12-17 Pseudo-random binary sequency generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8313540A FR2551235B1 (fr) 1983-08-22 1983-08-22 Generateur de sequences numeriques pseudoaleatoires

Publications (2)

Publication Number Publication Date
FR2551235A1 FR2551235A1 (fr) 1985-03-01
FR2551235B1 true FR2551235B1 (fr) 1985-10-25

Family

ID=9291738

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8313540A Expired FR2551235B1 (fr) 1982-12-20 1983-08-22 Generateur de sequences numeriques pseudoaleatoires

Country Status (1)

Country Link
FR (1) FR2551235B1 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2547937B2 (de) * 1975-10-25 1981-06-04 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren zum Erzeugen zufallsähnlicher Zeichenfolgen
FR2431809A1 (fr) * 1978-07-20 1980-02-15 Telediffusion Fse Procedes et dispositifs de brouillage et de debrouillage pour images de television

Also Published As

Publication number Publication date
FR2551235A1 (fr) 1985-03-01

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse