FI822229L - Radiokommunikationsmottagare - Google Patents

Radiokommunikationsmottagare

Info

Publication number
FI822229L
FI822229L FI822229A FI822229A FI822229L FI 822229 L FI822229 L FI 822229L FI 822229 A FI822229 A FI 822229A FI 822229 A FI822229 A FI 822229A FI 822229 L FI822229 L FI 822229L
Authority
FI
Finland
Prior art keywords
received signal
network
changed
same frequency
determined
Prior art date
Application number
FI822229A
Other languages
English (en)
Other versions
FI73556B (fi
FI73556C (fi
FI822229A0 (fi
Inventor
Paul Wilkinson Dent
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 FI822229A0 publication Critical patent/FI822229A0/fi
Publication of FI822229L publication Critical patent/FI822229L/fi
Publication of FI73556B publication Critical patent/FI73556B/fi
Application granted granted Critical
Publication of FI73556C publication Critical patent/FI73556C/fi

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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
    • H03G3/345—Muting during a short period of time when noise pulses are detected, i.e. blanking

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)
  • Radio Relay Systems (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Noise Elimination (AREA)
  • Burglar Alarm Systems (AREA)
  • Radio Transmission System (AREA)
  • Transceivers (AREA)
  • Structure Of Receivers (AREA)
  • Circuits Of Receivers In General (AREA)
FI822229A 1981-06-22 1982-06-21 Radiokommunikationsmottagare. FI73556C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8119215 1981-06-22
GB8119215 1981-06-22

Publications (4)

Publication Number Publication Date
FI822229A0 FI822229A0 (fi) 1982-06-21
FI822229L true FI822229L (fi) 1982-12-23
FI73556B FI73556B (fi) 1987-06-30
FI73556C FI73556C (fi) 1987-10-09

Family

ID=10522727

Family Applications (1)

Application Number Title Priority Date Filing Date
FI822229A FI73556C (fi) 1981-06-22 1982-06-21 Radiokommunikationsmottagare.

Country Status (10)

Country Link
US (1) US4532636A (fi)
EP (1) EP0068690B1 (fi)
AT (1) ATE15425T1 (fi)
DE (1) DE3266023D1 (fi)
DK (1) DK160387C (fi)
ES (1) ES513362A0 (fi)
FI (1) FI73556C (fi)
IE (1) IE53260B1 (fi)
NO (1) NO155597C (fi)
YU (1) YU45114B (fi)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8300076D0 (en) * 1983-01-04 2010-03-10 Secr Defence Electronic detector circuit
JPS59153346A (ja) * 1983-02-21 1984-09-01 Nec Corp 音声符号化・復号化装置
GB2267198B (en) * 1984-05-12 1994-04-06 Racal Res Ltd Communications system with interference suppression
DE3429959C2 (de) * 1984-08-16 1986-12-18 Rohde & Schwarz GmbH & Co KG, 8000 München Verfahren zur Nachrichtenübertragung mittels Frequenzumtast-Modulation
SE445698B (sv) * 1984-11-19 1986-07-07 Ericsson Telefon Ab L M Forfarande att reducera smalbandiga storares inverkan vid radiokommunikation mellan tva stationer, vilka utnyttjar frekvenshopp
US4817113A (en) * 1987-05-01 1989-03-28 Unisys Corporation Range estimation using floating reference points
JPS63275233A (ja) * 1987-05-06 1988-11-11 Victor Co Of Japan Ltd スペクトラム拡散通信方式
US4754467A (en) * 1987-07-01 1988-06-28 Motorola, Inc. Digital signal detection with signal buffering and message insertion
US4922549A (en) * 1988-10-27 1990-05-01 Motorola, Inc. Digital FM squelch detector
US5319801A (en) * 1990-12-05 1994-06-07 Alliedsignal Inc. Seamless frequency hopping system
WO1992010882A1 (en) * 1990-12-05 1992-06-25 Allied-Signal Inc. Seamless frequency hopping system
US5210771A (en) * 1991-08-01 1993-05-11 Motorola, Inc. Multiple user spread-spectrum communication system
FR2689347B1 (fr) * 1992-03-27 1994-05-06 Alcatel Telspace Dispositif de traitement de signaux se presentant sous forme de paquets.
US5394433A (en) * 1993-04-22 1995-02-28 International Business Machines Corporation Frequency hopping pattern assignment and control in multiple autonomous collocated radio networks
US5425049A (en) * 1993-10-25 1995-06-13 Ericsson Ge Mobile Communications Inc. Staggered frequency hopping cellular radio system
US5537434A (en) * 1993-10-25 1996-07-16 Telefonaktiebolaget Lm Ericsson Frequency hopping control channel in a radio communication system
US5640415A (en) * 1994-06-10 1997-06-17 Vlsi Technology, Inc. Bit error performance of a frequency hopping, radio communication system
US5663957A (en) * 1995-07-12 1997-09-02 Ericsson Inc. Dual mode satellite/cellular terminal
US6975582B1 (en) 1995-07-12 2005-12-13 Ericsson Inc. Dual mode satellite/cellular terminal
US5954834A (en) * 1996-10-09 1999-09-21 Ericsson Inc. Systems and methods for communicating desired audio information over a communications medium
US5978366A (en) * 1996-12-20 1999-11-02 Ericsson Inc. Methods and systems for reduced power operation of cellular mobile terminals
US5859664A (en) * 1997-01-31 1999-01-12 Ericsson Inc. Method and apparatus for line or frame-synchronous frequency hopping of video transmissions
US7218663B1 (en) * 1997-12-26 2007-05-15 Canon Kabushiki Kaisha Communication system in which arbitrary number of communication apparatuses form group to communicate with each other, and the communication apparatus
JP4249821B2 (ja) * 1998-08-31 2009-04-08 富士通株式会社 ディジタルオーディオ再生装置
US6484285B1 (en) 2000-02-07 2002-11-19 Ericsson, Inc. Tailbiting decoder and method
US7058114B2 (en) * 2000-02-25 2006-06-06 Texas Instruments Incorporated Wireless device and method
US9356652B2 (en) * 2012-10-30 2016-05-31 Freescale Semiconductor, Inc. Frequency hopping radio system

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2996576A (en) * 1959-02-20 1961-08-15 Ampex Video system with transient and dropout compensation
NL280738A (fi) * 1961-07-10
US3688039A (en) * 1969-08-05 1972-08-29 Nippon Electric Co Digital signal reception system
US3700812A (en) * 1971-03-11 1972-10-24 Nasa Audio system with means for reducing noise effects
AT308209B (de) * 1971-07-15 1973-06-25 Philips Nv Schaltungsanordnung zur Dropout-Kompensation bei der Wiedergabe von auf einem Aufzeichnungsträger gespeicherten Signalen
US3947636A (en) * 1974-08-12 1976-03-30 Edgar Albert D Transient noise filter employing crosscorrelation to detect noise and autocorrelation to replace the noisey segment
IT1060726B (it) * 1975-01-11 1982-08-20 Chiba Communications Ind Telecomunicazioni simultanee frastazioni radio
FR2405601A1 (fr) * 1975-12-18 1979-05-04 Trt Telecom Radio Electr Systeme radioelectrique de transmission d'informations par modulation d'une porteuse a frequence variable par sauts
SE430455B (sv) * 1978-04-21 1983-11-14 Nippon Telegraph & Telephone Mottagaranordning med funktion att undertrycka brus under plotsliga avbrott
US4291405A (en) * 1979-09-07 1981-09-22 Bell Telephone Laboratories, Incorporated Error reduction speech communication system
CA1157525A (en) * 1980-03-08 1983-11-22 Majid Sepehri Receiver for a frequency diversity radio communications system comprising interference assessment circuit and adaptive filter
US4376289A (en) * 1980-10-27 1983-03-08 Rca Corporation Self-enabling dropout corrector

Also Published As

Publication number Publication date
EP0068690A1 (en) 1983-01-05
NO822039L (no) 1982-12-23
DK160387C (da) 1991-08-12
NO155597C (no) 1987-04-22
ATE15425T1 (de) 1985-09-15
DE3266023D1 (en) 1985-10-10
ES8304387A1 (es) 1983-03-16
YU45114B (en) 1992-03-10
FI73556B (fi) 1987-06-30
FI73556C (fi) 1987-10-09
DK277582A (da) 1982-12-23
FI822229A0 (fi) 1982-06-21
IE821409L (en) 1982-12-22
IE53260B1 (en) 1988-09-28
NO155597B (no) 1987-01-12
US4532636A (en) 1985-07-30
YU135682A (en) 1985-10-31
EP0068690B1 (en) 1985-09-04
ES513362A0 (es) 1983-03-16
DK160387B (da) 1991-03-04

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Legal Events

Date Code Title Description
MM Patent lapsed
MM Patent lapsed

Owner name: THE MARCONI COMPANY LIMITED