ES8304392A1 - "perfeccionamientos en aparatos de radio-comunicaciones". - Google Patents

"perfeccionamientos en aparatos de radio-comunicaciones".

Info

Publication number
ES8304392A1
ES8304392A1 ES513261A ES513261A ES8304392A1 ES 8304392 A1 ES8304392 A1 ES 8304392A1 ES 513261 A ES513261 A ES 513261A ES 513261 A ES513261 A ES 513261A ES 8304392 A1 ES8304392 A1 ES 8304392A1
Authority
ES
Spain
Prior art keywords
channels
random number
pseudo
operating
radio communications
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
ES513261A
Other languages
English (en)
Other versions
ES513261A0 (es
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Co Ltd
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 Marconi Co Ltd filed Critical Marconi Co Ltd
Publication of ES513261A0 publication Critical patent/ES513261A0/es
Publication of ES8304392A1 publication Critical patent/ES8304392A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/003—Secret communication by varying carrier frequency at or within predetermined or random intervals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Transceivers (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Electroluminescent Light Sources (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Transmitters (AREA)
  • Structure Of Receivers (AREA)

Abstract

APARATO DE RADIO-COMUNICACIONES CON VARIACION POR SALTOS DE LA FRECUENCIA. CONSTA DE UN PRIMER CONTADOR (1), SENSIBLE A SEÑALES DE RELOJ, QUE PROPORCIONA UNA SERIE DE SEÑALES DE DIGITOS MULTIPLES QUE IDENTIFICAN A CADA UNO DE LOS ~AN~B POSIBLES CANALES; DE MEDIOS DE ENCLAVAMIENTO ELECTRONICO (4) CUYA ENTRADA RECIBE LAS SEÑALES DE DIGITOS MULTIPLES DE DICHO PRIMER CONTADOR (1); DE UNA MEMORIA ALMACEN (3) QUE ALMACENA UN BITIO DE DATOS PARA CADA UNO DE LOS ~AN~B CANALES; Y DE UN SEGUNDO CONTADOR (5), SENSIBLE A LAS SEÑALES HABILITADORAS PROCEDENTES DE LA MEMORIA ALMACEN (3), QUE CUENTA LOS IMPULSOS DE RELOJ SUMINISTRADOS AL PRIMER CONTADOR (1).
ES513261A 1981-06-19 1982-06-18 "perfeccionamientos en aparatos de radio-comunicaciones". Expired ES8304392A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8118954 1981-06-19

Publications (2)

Publication Number Publication Date
ES513261A0 ES513261A0 (es) 1983-03-16
ES8304392A1 true ES8304392A1 (es) 1983-03-16

Family

ID=10522651

Family Applications (1)

Application Number Title Priority Date Filing Date
ES513261A Expired ES8304392A1 (es) 1981-06-19 1982-06-18 "perfeccionamientos en aparatos de radio-comunicaciones".

Country Status (10)

Country Link
US (1) US4476566A (es)
EP (1) EP0069477B1 (es)
AT (1) ATE11353T1 (es)
DE (1) DE3261937D1 (es)
DK (1) DK158184C (es)
ES (1) ES8304392A1 (es)
FI (1) FI73555C (es)
IE (1) IE53125B1 (es)
NO (1) NO154677C (es)
YU (1) YU133182A (es)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2518337A1 (fr) * 1981-12-15 1983-06-17 Thomson Csf Procede d'etablissement des communications dans un reseau de postes emetteurs-recepteurs a sauts de frequence et poste destine a la mise en oeuvre de ce procede
GB2277231B (en) * 1984-05-12 1995-03-15 Racal Res Ltd Communications system
NL8600576A (nl) * 1986-03-06 1987-10-01 Hollandse Signaalapparaten Bv Communicatiesysteem.
US5303259A (en) * 1991-11-07 1994-04-12 Loveall Peter S Frequency-hopped electronic signal transmitter
US5235613A (en) * 1992-03-02 1993-08-10 The Boeing Company Frequency hopping method and apparatus
WO1993021703A1 (en) * 1992-04-15 1993-10-28 Coachline Video Express Pty Ltd Signal distribution system
US5276738A (en) * 1992-12-17 1994-01-04 Bull Hn Information Systems Inc. Software data protection mechanism
US5930291A (en) * 1993-04-26 1999-07-27 Motorola, Inc. Method and apparatus for selecting random values from a non-sequential set
US5537434A (en) * 1993-10-25 1996-07-16 Telefonaktiebolaget Lm Ericsson Frequency hopping control channel in a radio communication system
US5425049A (en) * 1993-10-25 1995-06-13 Ericsson Ge Mobile Communications Inc. Staggered frequency hopping cellular radio system
US5598471A (en) * 1993-11-16 1997-01-28 South African Microelectronic Systems Ltd. Method and apparatus for encoding and decoding of audio transmission signals
US5659303A (en) * 1995-04-20 1997-08-19 Schlumberger Industries, Inc. Method and apparatus for transmitting monitor data
DE19523654A1 (de) * 1995-06-29 1997-01-02 Sel Alcatel Ag Verfahren, Schaltungsanordnung und Abfragesystem zur fälschungssicheren Geräteidentifikation
US6023477A (en) * 1996-12-18 2000-02-08 Ericsson Inc. System and method of time and frequency synchronization in a radiocommunication system
US5859664A (en) * 1997-01-31 1999-01-12 Ericsson Inc. Method and apparatus for line or frame-synchronous frequency hopping of video transmissions
JPH11243382A (ja) 1998-02-25 1999-09-07 Sony Corp 物理チヤネル割当方法及び送信装置
US6112094A (en) * 1998-04-06 2000-08-29 Ericsson Inc. Orthogonal frequency hopping pattern re-use scheme
DE19918387A1 (de) * 1999-04-22 2000-11-02 Siemens Ag Verfahren zum Synchronisieren der Frequenz beim drahtlosen Fernsprechen sowie Anordnung zur Durchführung des Verfahrens
US7280580B1 (en) * 1999-10-15 2007-10-09 Telefonaktlebolaget Lm Ericsson (Publ.) Hop sequence adaptation in a frequency-hopping communications system
US6934388B1 (en) * 1999-11-12 2005-08-23 Itt Manufacturing Enterprises, Inc. Method and apparatus for generating random permutations
US6888882B1 (en) * 2000-11-30 2005-05-03 Arraycomm, Inc. Reducing collisions in a radio communications system
FR2820270B1 (fr) 2001-01-29 2003-04-25 Mitsubishi Electric Inf Tech Methode d'allocation implicite de ressources
US7139397B2 (en) * 2001-07-20 2006-11-21 Stmicroelectronics S.R.L. Hybrid architecture for realizing a random numbers generator
ES2438532T3 (es) * 2004-07-06 2014-01-17 Telefonaktiebolaget L M Ericsson (Publ) Códigos ortogonales de longitud variable no contiguos

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE385644B (sv) * 1974-10-17 1976-07-12 Ericsson Telefon Ab L M Anordning vid kryptering och dekryptering av meddelanden
US4271524A (en) * 1980-02-25 1981-06-02 Bell Telephone Laboratories, Incorporated Spread spectrum FH-MFSK receiver
US4383323A (en) * 1980-06-09 1983-05-10 Bell Telephone Laboratories, Incorporated Spread spectrum FH-MFSK transmitter and receiver
US4320514A (en) * 1980-06-09 1982-03-16 Bell Telephone Laboratories, Incorporated Spread spectrum FH-MFSK radio receiver
US4392231A (en) * 1980-06-30 1983-07-05 Bell Telephone Laboratories, Incorporated Spread spectrum FH-MFSK decoder
US4355399A (en) * 1981-02-23 1982-10-19 Bell Telephone Laboratories, Incorporated Adaptive spread spectrum FH-MFSK transmitter and receiver

Also Published As

Publication number Publication date
YU133182A (en) 1985-04-30
DK158184C (da) 1990-09-17
IE821353L (en) 1982-12-19
FI822209A0 (fi) 1982-06-18
DK275082A (da) 1982-12-20
ATE11353T1 (de) 1985-02-15
EP0069477B1 (en) 1985-01-16
US4476566A (en) 1984-10-09
DE3261937D1 (en) 1985-02-28
FI73555C (fi) 1987-10-09
NO154677C (no) 1986-11-26
FI73555B (fi) 1987-06-30
FI822209L (fi) 1982-12-20
NO154677B (no) 1986-08-18
DK158184B (da) 1990-04-02
ES513261A0 (es) 1983-03-16
EP0069477A1 (en) 1983-01-12
IE53125B1 (en) 1988-07-06
NO822040L (no) 1982-12-20

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19970401