FR2162549A1 - - Google Patents

Info

Publication number
FR2162549A1
FR2162549A1 FR7243598A FR7243598A FR2162549A1 FR 2162549 A1 FR2162549 A1 FR 2162549A1 FR 7243598 A FR7243598 A FR 7243598A FR 7243598 A FR7243598 A FR 7243598A FR 2162549 A1 FR2162549 A1 FR 2162549A1
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.)
Withdrawn
Application number
FR7243598A
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.)
SENDAI TELEVISION BROADC
Original Assignee
SENDAI TELEVISION BROADC
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
Priority claimed from JP46099646A external-priority patent/JPS4864813A/ja
Priority claimed from JP3898272A external-priority patent/JPS492417A/ja
Application filed by SENDAI TELEVISION BROADC filed Critical SENDAI TELEVISION BROADC
Publication of FR2162549A1 publication Critical patent/FR2162549A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H04B1/56—Circuits using the same frequency for two directions of communication with provision for simultaneous communication in two directions

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
FR7243598A 1971-12-08 1972-12-07 Withdrawn FR2162549A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP46099646A JPS4864813A (fr) 1971-12-08 1971-12-08
JP3898272A JPS492417A (fr) 1972-04-18 1972-04-18

Publications (1)

Publication Number Publication Date
FR2162549A1 true FR2162549A1 (fr) 1973-07-20

Family

ID=26378296

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7243598A Withdrawn FR2162549A1 (fr) 1971-12-08 1972-12-07

Country Status (3)

Country Link
US (1) US3827052A (fr)
FR (1) FR2162549A1 (fr)
GB (1) GB1364808A (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7407717A (nl) * 1974-06-10 1975-12-12 Philips Nv Radiotelefoniesysteem.
IT1060726B (it) * 1975-01-11 1982-08-20 Chiba Communications Ind Telecomunicazioni simultanee frastazioni radio
NL7511562A (nl) * 1975-02-05 1976-08-09 Chiba Communications Ind Radiocommunicatie-stelsel met mogelijkheid van gelijktijdige communicatie tussen radioposten.
US4132983A (en) * 1976-01-12 1979-01-02 Royal Industries, Inc. Radio synchronized warning light system
US4140973A (en) * 1977-03-29 1979-02-20 Canadian Patents And Development Limited Channel evaluation apparatus for point-to-point communications systems
US4267592A (en) * 1979-03-30 1981-05-12 Rockwell International Corporation Anti-jam radio
US4287588A (en) * 1979-04-12 1981-09-01 The United States Of America As Represented By The Secretary Of The Army Multiple access, time-division multiplex, satellite communications system
GB2109197B (en) * 1981-10-13 1985-12-04 Standard Telephones Cables Ltd Radio system
US4531208A (en) * 1982-02-24 1985-07-23 Rca Corporation Apparatus and method for reducing telephone channel power loading
SE453449B (sv) * 1982-07-06 1988-02-01 Ericsson Telefon Ab L M Anleggning for tradlos overforing av telefonsamtal
US4644524A (en) * 1985-01-22 1987-02-17 Emery David L Simultaneous communication system using time delays
US4675863A (en) 1985-03-20 1987-06-23 International Mobile Machines Corp. Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels
US4839923A (en) * 1986-12-12 1989-06-13 Motorola, Inc. Method and apparatus for time companding an analog signal
US5058202A (en) * 1989-08-25 1991-10-15 Amaf Industries, Inc. System and method of transmitting and receiving a licompex modulated signal over a communication channel utilizing frequency modulation techniques
US5546383A (en) 1993-09-30 1996-08-13 Cooley; David M. Modularly clustered radiotelephone system
GB2362292B (en) * 2000-05-08 2003-01-22 Motorola Israel Ltd A radio communications transceiver and a communications method using the same

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE223957A (fr) * 1923-07-17 1900-01-01
US2498635A (en) * 1947-05-21 1950-02-28 Int Standard Electric Corp Duplex radio system
FR1061604A (fr) * 1948-07-09 1954-04-14 Système de réduction de la bande de fréquences occupée par une transmission téléphonique
US2987614A (en) * 1952-02-06 1961-06-06 Claudius H M Roberts Secrecy voice radio communication system
US3150374A (en) * 1959-06-25 1964-09-22 David E Sunstein Multichannel signaling system and method

Also Published As

Publication number Publication date
GB1364808A (en) 1974-08-29
US3827052A (en) 1974-07-30

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Legal Events

Date Code Title Description
ST Notification of lapse