FR2264429B1 - - Google Patents

Info

Publication number
FR2264429B1
FR2264429B1 FR7507433A FR7507433A FR2264429B1 FR 2264429 B1 FR2264429 B1 FR 2264429B1 FR 7507433 A FR7507433 A FR 7507433A FR 7507433 A FR7507433 A FR 7507433A FR 2264429 B1 FR2264429 B1 FR 2264429B1
Authority
FR
France
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
FR7507433A
Other versions
FR2264429A1 (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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of FR2264429A1 publication Critical patent/FR2264429A1/fr
Application granted granted Critical
Publication of FR2264429B1 publication Critical patent/FR2264429B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03828—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
    • H04L25/03866—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using scrambling
    • H04L25/03872—Parallel scrambling or descrambling
FR7507433A 1974-03-11 1975-03-10 Expired FR2264429B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US450171A US3920894A (en) 1974-03-11 1974-03-11 Pseudo-random parallel word generator

Publications (2)

Publication Number Publication Date
FR2264429A1 FR2264429A1 (fr) 1975-10-10
FR2264429B1 true FR2264429B1 (fr) 1978-02-03

Family

ID=23787061

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7507433A Expired FR2264429B1 (fr) 1974-03-11 1975-03-10

Country Status (9)

Country Link
US (1) US3920894A (fr)
JP (1) JPS5642184B2 (fr)
BE (1) BE826504A (fr)
CA (1) CA1036279A (fr)
DE (1) DE2510278C2 (fr)
ES (1) ES435285A1 (fr)
FR (1) FR2264429B1 (fr)
GB (1) GB1495426A (fr)
SE (1) SE401302B (fr)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO141294C (no) * 1974-10-31 1980-02-06 Licentia Gmbh Fremgangsmaate ved frembringelse av slumpartede binaertegnfoelger
CH603014A5 (fr) * 1975-02-05 1978-08-15 Europ Handelsges Anst
US4120030A (en) * 1977-03-11 1978-10-10 Kearney & Trecker Corporation Computer software security system
US4167700A (en) * 1977-05-02 1979-09-11 Motorola, Inc. Digital voice protection system and method
US4291386A (en) * 1978-11-30 1981-09-22 Sperry Corporation Pseudorandom number generator
DE3010969A1 (de) * 1980-03-21 1981-10-01 Siemens AG, 1000 Berlin und 8000 München Pcm-system mit sendeseitigem verwuerfler und empfangsseitigem entwuerfler
US4447672A (en) * 1980-10-06 1984-05-08 Nippon Electric Co., Ltd. Device for encrypting each input data bit by at least one keying bit decided by a code pattern and a bit pattern of a predetermined number of preceding encrypted bits
US4723246A (en) * 1982-05-11 1988-02-02 Tandem Computers Incorporated Integrated scrambler-encoder using PN sequence generator
FR2581197B1 (fr) * 1982-08-11 1987-09-04 Dassault Electronique Procede et dispositif pour eliminer l'effet des signaux parasites lies a la commutation des voies de reception dans un radar a impulsions.
US4667301A (en) * 1983-06-13 1987-05-19 Control Data Corporation Generator for pseudo-random numbers
US4698617A (en) * 1984-05-22 1987-10-06 American Microsystems, Inc. ROM Protection scheme
US4785410A (en) * 1985-06-05 1988-11-15 Clarion Co., Ltd. Maximum length shift register sequences generator
US4724541A (en) * 1985-07-24 1988-02-09 Mallick Brian C Data-dependent binary encoder/decoder
US4864525A (en) * 1986-07-11 1989-09-05 Clarion Co., Ltd. Maximum length shift register sequence generator
GB8727846D0 (en) * 1987-11-27 1987-12-31 British Telecomm Optical communications network
NL8700930A (nl) * 1987-04-17 1988-11-16 Hollandse Signaalapparaten Bv Systeem van orthogonaal werkende codegeneratoren, radio's voorzien van een codegenerator en codegeneratoren van zo'n systeem.
JPH0242223Y2 (fr) * 1988-04-08 1990-11-09
DE3825880C1 (de) * 1988-07-29 1995-12-21 Siemens Ag Schlüsseleinrichtung
JP2579539B2 (ja) * 1988-10-11 1997-02-05 クラリオン株式会社 スペクトラム拡散通信装置
US5224165A (en) * 1988-10-25 1993-06-29 Hughes Aircraft Company High speed word generator
US5031129A (en) * 1989-05-12 1991-07-09 Alcatel Na Network Systems Corp. Parallel pseudo-random generator for emulating a serial pseudo-random generator and method for carrying out same
US4998076A (en) * 1989-08-25 1991-03-05 The Boeing Company Apparatus and methods for simulating a lightning strike in an aircraft avionics environment
KR940009843B1 (ko) * 1992-02-07 1994-10-17 이병기 병렬 스크램블링 시스템
US5530959A (en) * 1994-05-18 1996-06-25 At&T Corp. Self-synchronizing scrambler/descrambler without error multiplication
US6571181B1 (en) * 1999-08-11 2003-05-27 Broadcom Corporation System and method for detecting a device requiring power
US6738935B1 (en) * 2000-02-07 2004-05-18 3Com Corporation Coding sublayer for multi-channel media with error correction
US7430262B2 (en) * 2001-03-19 2008-09-30 Defense Ultra Electronics Canada Inc. Frame synchronization method and system
US7139397B2 (en) * 2001-07-20 2006-11-21 Stmicroelectronics S.R.L. Hybrid architecture for realizing a random numbers generator
WO2006048703A1 (fr) * 2004-11-05 2006-05-11 Synaptic Laboratories Limited Processus et appareil de codage d'un signal

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3401235A (en) * 1964-12-29 1968-09-10 Bell Telephone Labor Inc Time division communication system
US3700806A (en) * 1967-09-18 1972-10-24 Csf Key generators for cryptographic devices
SE322257B (fr) * 1969-06-11 1970-04-06 Ericsson Telefon Ab L M
US3728529A (en) * 1969-10-08 1973-04-17 Sperry Rand Corp Two-way communication system employing two-clock frequency pseudo-noise signal modulation
CA925212A (en) * 1970-06-22 1973-04-24 Western Electric Company, Incorporated Digital data scrambler-descrambler apparatus for improved error performance
US3761696A (en) * 1972-02-16 1973-09-25 Signetics Corp Random integer generator and method
US3784743A (en) * 1972-08-23 1974-01-08 Bell Telephone Labor Inc Parallel data scrambler

Also Published As

Publication number Publication date
SE7502401L (fr) 1975-09-12
FR2264429A1 (fr) 1975-10-10
BE826504A (fr) 1975-06-30
DE2510278C2 (de) 1983-06-01
DE2510278A1 (de) 1975-09-18
SE401302B (sv) 1978-04-24
ES435285A1 (es) 1976-11-16
JPS5642184B2 (fr) 1981-10-02
GB1495426A (en) 1977-12-21
CA1036279A (fr) 1978-08-08
US3920894A (en) 1975-11-18
JPS50122855A (fr) 1975-09-26

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Legal Events

Date Code Title Description
ST Notification of lapse