FR2401578A1 - RADIOELECTRIC INSTALLATION WITH SELECTIVE CALL OF SUBSCRIBERS TO EACH OTHER, WITH INTERPOSITION OF A CENTER - Google Patents

RADIOELECTRIC INSTALLATION WITH SELECTIVE CALL OF SUBSCRIBERS TO EACH OTHER, WITH INTERPOSITION OF A CENTER

Info

Publication number
FR2401578A1
FR2401578A1 FR7824744A FR7824744A FR2401578A1 FR 2401578 A1 FR2401578 A1 FR 2401578A1 FR 7824744 A FR7824744 A FR 7824744A FR 7824744 A FR7824744 A FR 7824744A FR 2401578 A1 FR2401578 A1 FR 2401578A1
Authority
FR
France
Prior art keywords
subscribers
interposition
installation
radioelectric
center
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.)
Granted
Application number
FR7824744A
Other languages
French (fr)
Other versions
FR2401578B1 (en
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of FR2401578A1 publication Critical patent/FR2401578A1/en
Application granted granted Critical
Publication of FR2401578B1 publication Critical patent/FR2401578B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18—Service support devices; Network management devices
    • H04W88/185—Selective call encoders for paging networks, e.g. paging centre devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18—Service support devices; Network management devices
    • H04W88/185—Selective call encoders for paging networks, e.g. paging centre devices
    • H04W88/187—Selective call encoders for paging networks, e.g. paging centre devices using digital or pulse address codes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Optical Communication System (AREA)

Abstract

Installation d'appel de personnes, dont les abonnés peuvent s'appeler mutuellement à l'aide de postes émetteur-récepteurs portatifs, avec interposition d'un système émetteur-récepteur centraL Afin que les abonnés puissent disposer d'appareils légers faciles à porter, ces derniers sont établis de manière à émettre un code simple. Le central comprend des convertisseurs pour la conversion des signaux d'appel reçus, affectés d'un code simple, en signaux d'appel affectés d'un code offrant une sécurité de transmission.Paging installation, whose subscribers can call each other using portable transceivers, with the interposition of a central transceiver system So that subscribers can have light devices that are easy to carry, these are set up to issue a simple code. The exchange comprises converters for converting received call signals, assigned a simple code, into call signals assigned a code providing transmission security.

FR7824744A 1977-08-25 1978-08-25 RADIOELECTRIC INSTALLATION WITH SELECTIVE CALL OF SUBSCRIBERS TO EACH OTHER, WITH INTERPOSITION OF A CENTER Granted FR2401578A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2738278A DE2738278C2 (en) 1977-08-25 1977-08-25 Radio system with wireless transmission between portable transceiver devices and with selective calls between the participants with the interposition of a control center

Publications (2)

Publication Number Publication Date
FR2401578A1 true FR2401578A1 (en) 1979-03-23
FR2401578B1 FR2401578B1 (en) 1983-05-27

Family

ID=6017239

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7824744A Granted FR2401578A1 (en) 1977-08-25 1978-08-25 RADIOELECTRIC INSTALLATION WITH SELECTIVE CALL OF SUBSCRIBERS TO EACH OTHER, WITH INTERPOSITION OF A CENTER

Country Status (12)

Country Link
AT (1) AT377882B (en)
BE (1) BE869907A (en)
CH (1) CH625378A5 (en)
DE (1) DE2738278C2 (en)
FI (1) FI782557A (en)
FR (1) FR2401578A1 (en)
GB (1) GB2021296B (en)
IT (1) IT1098749B (en)
NL (1) NL7808703A (en)
NO (1) NO149449C (en)
SE (1) SE434590B (en)
WO (1) WO1979000110A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5961644U (en) * 1982-10-15 1984-04-23 日本電気株式会社 selective call receiver
DE3315625A1 (en) * 1983-04-29 1984-10-31 Robert Bosch Gmbh, 7000 Stuttgart METHOD FOR TRANSMITTING DIGITAL CALL MARKS

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1616340B2 (en) * 1968-01-25 1973-10-04 Telefunken Patentverwertungsgesellschaft Mbh, 7900 Ulm Intercom system with wireless transmission between subscribers with portable devices via a control center
DE1931480B2 (en) * 1969-06-20 1976-03-11 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt CIRCUIT FOR PRESELECTION OF EQUAL FREQUENCY DISTANCED TRANSMITTERS
FR2152346B1 (en) * 1971-09-06 1975-07-11 Materiel Telephonique
CH573688A5 (en) * 1974-07-11 1976-03-15 Hasler Ag

Also Published As

Publication number Publication date
SE7903041L (en) 1979-04-05
WO1979000110A1 (en) 1979-03-08
CH625378A5 (en) 1981-09-15
BE869907A (en) 1978-12-18
NL7808703A (en) 1979-02-27
NO149449C (en) 1984-04-18
IT1098749B (en) 1985-09-07
DE2738278C2 (en) 1982-06-03
DE2738278A1 (en) 1979-03-01
GB2021296B (en) 1982-04-07
NO782875L (en) 1979-02-27
GB2021296A (en) 1979-03-08
FR2401578B1 (en) 1983-05-27
SE434590B (en) 1984-07-30
ATA577378A (en) 1984-09-15
FI782557A (en) 1979-02-26
IT7827001A0 (en) 1978-08-24
AT377882B (en) 1985-05-10
NO149449B (en) 1984-01-09

Similar Documents

Publication Publication Date Title
CA2003929A1 (en) Radiotelephone system in the form of a private branch exchange
DE69229266D1 (en) GLOBAL SATELLITE COMMUNICATION SYSTEM WITH GEOGRAPHIC PROTOCOL IMPLEMENTATION
KR970009301B1 (en) Spread spectrum communication system
BR9806948A (en) Portable radiotelephone for automatic dialing for a voice activated dialing system
FI973975A0 (en) The mobile telephone system is also transcoded
BR9205262A (en) RECEIVER TO RECEIVE A SIGNAL THAT WAS PROVIDED THROUGH A TRANSMISSION CHANNEL AND SUBMITTED TO DISTORTION BY CHANNEL, PROCESS TO ENCODE A SIGNAL TO SUPPLY TO A CHANNEL THAT ADD DISTORTCTIONS TO THE SIGNAL, AND, SIGNAL PROVIDED WITH A CHARGE. ADDING DISTORTIONS TO THE SIGN
ATE248332T1 (en) SOLAR ENERGY RECEIVING DEVICE
AR001347A1 (en) A system for clearing a frequency band that has a filter and a frequency converter.
FR2414242A1 (en) USEFUL DEVICE AS A SOURCE OF BRAKING RADIATION PHOTONS
BR9807560A (en) Process for operating a network comprising a network operator station and a plurality of user stations, network and user station
FR2401578A1 (en) RADIOELECTRIC INSTALLATION WITH SELECTIVE CALL OF SUBSCRIBERS TO EACH OTHER, WITH INTERPOSITION OF A CENTER
JPS55137761A (en) Composite private unit
FR2691181B1 (en) Mobile signaling device, especially for road traffic.
NO820893L (en) CLUTCH DEVICE FOR AA CONNECT TELEX PARTICIPATION STATIONS ASSOCIATED WITH A DATA PROCESSING PLANT, WITH TELETEX PARTICIPATING STATIONS ALSO LINKED TO DATA PROCESSING PLANT
JPS5386102A (en) Selective exchange system
JPS5414604A (en) Constituting system of communication network
JPS5742261A (en) Signal conversion system
JPS53100704A (en) Waiting-time connection system
JPS53132938A (en) Two-way data transmitter
JPS53129560A (en) Telephone reservation system
ES457636A1 (en) Line signalling transmission in a pcm exchange
JPS53105921A (en) Absence transfer releasing system for automatic exchange
JPS52113110A (en) Automatic exchanger connecting system
RU97118088A (en) TEMPORARY SWITCHING DEVICE FOR ELECTRONIC DATA EXCHANGE SYSTEM
JPS54159113A (en) Camp on connection system

Legal Events

Date Code Title Description
TP Transmission of property
CD Change of name or company name
ST Notification of lapse