IT976320B - Dispositivo d emissione e di rice zione di impulsi telefonici - Google Patents

Dispositivo d emissione e di rice zione di impulsi telefonici

Info

Publication number
IT976320B
IT976320B IT71252/72A IT7125272A IT976320B IT 976320 B IT976320 B IT 976320B IT 71252/72 A IT71252/72 A IT 71252/72A IT 7125272 A IT7125272 A IT 7125272A IT 976320 B IT976320 B IT 976320B
Authority
IT
Italy
Prior art keywords
receipt
emission
pulses
telephone
telephone pulses
Prior art date
Application number
IT71252/72A
Other languages
English (en)
Original Assignee
Assoc Des Ouvriers En Instru M
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 Assoc Des Ouvriers En Instru M filed Critical Assoc Des Ouvriers En Instru M
Application granted granted Critical
Publication of IT976320B publication Critical patent/IT976320B/it

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
    • H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H04B1/586—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa using an electronic circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H03H11/1213—Frequency selective two-port networks using amplifiers with feedback using transistor amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H03H11/1217—Frequency selective two-port networks using amplifiers with feedback using a plurality of operational amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H03H11/126—Frequency selective two-port networks using amplifiers with feedback using a single operational amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H03H11/126—Frequency selective two-port networks using amplifiers with feedback using a single operational amplifier
    • H03H11/1286—Sallen-Key biquad
    • 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
    • H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Networks Using Active Elements (AREA)
  • Amplifiers (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
IT71252/72A 1972-01-04 1972-12-29 Dispositivo d emissione e di rice zione di impulsi telefonici IT976320B (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7200102A FR2166696A5 (it) 1972-01-04 1972-01-04
FR7243763A FR2250462A6 (it) 1972-01-04 1972-12-08

Publications (1)

Publication Number Publication Date
IT976320B true IT976320B (it) 1974-08-20

Family

ID=26216817

Family Applications (1)

Application Number Title Priority Date Filing Date
IT71252/72A IT976320B (it) 1972-01-04 1972-12-29 Dispositivo d emissione e di rice zione di impulsi telefonici

Country Status (8)

Country Link
US (1) US4001524A (it)
BE (1) BE793381A (it)
CH (1) CH583484A5 (it)
DE (1) DE2300318A1 (it)
FR (2) FR2166696A5 (it)
GB (1) GB1424381A (it)
IT (1) IT976320B (it)
NL (1) NL7217601A (it)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2042848B (en) * 1978-12-30 1983-01-06 Plessey Co Ltd Line current feed and hybrid arrangement (sytem x)
DE2911866C3 (de) * 1979-03-26 1982-03-11 Siemens AG, 1000 Berlin und 8000 München Anordnung mit einer Gabelschaltung für den Zweidraht-Vierdraht-Übergang in PCM-Zeitmultiplexsystemen
US4358644A (en) * 1980-06-17 1982-11-09 Rts Systems, Inc. Bilateral current source for a multi-terminal intercom
DE3936894A1 (de) * 1989-11-06 1991-05-08 Bosch Gmbh Robert Multiplex-schaltungsanordnung, insbesondere fuer die ansteuerung von verbraucher-stationen in kraftfahrzeugen
AU2609101A (en) * 2000-01-03 2001-07-16 Crown Audio, Inc. Remote sensing by high-order filtering
US7576627B2 (en) * 2006-04-24 2009-08-18 Bradley University Electronically tunable active duplexer
GB2571732A (en) * 2018-03-06 2019-09-11 Reid Acoustic Designs Ltd An apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3180947A (en) * 1961-09-12 1965-04-27 Sylvania Electric Prod Electronic bridge hybrid circuit
US3480742A (en) * 1967-03-31 1969-11-25 Bell Telephone Labor Inc Hybrid circuit
US3586881A (en) * 1967-12-29 1971-06-22 Bell Telephone Labor Inc Transistor hybrid circuit

Also Published As

Publication number Publication date
GB1424381A (en) 1976-02-11
NL7217601A (it) 1973-07-06
FR2166696A5 (it) 1973-08-17
CH583484A5 (it) 1976-12-31
US4001524A (en) 1977-01-04
DE2300318A1 (de) 1973-07-12
BE793381A (fr) 1973-04-16
FR2250462A6 (it) 1975-05-30

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