AU2781677A – Bidirectional voice frequency repeaters
– Google Patents
AU2781677A – Bidirectional voice frequency repeaters
– Google Patents
Bidirectional voice frequency repeaters
Info
Publication number
AU2781677A
AU2781677A
AU27816/77A
AU2781677A
AU2781677A
AU 2781677 A
AU2781677 A
AU 2781677A
AU 27816/77 A
AU27816/77 A
AU 27816/77A
AU 2781677 A
AU2781677 A
AU 2781677A
AU 2781677 A
AU2781677 A
AU 2781677A
Authority
AU
Australia
Prior art keywords
voice frequency
bidirectional voice
frequency repeaters
repeaters
bidirectional
Prior art date
1976-08-16
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
AU27816/77A
Other versions
AU514331B2
(en
Inventor
R. B Jr. Chaikin J. deC. III. Magee J. P. and Porter G. R. ro ST Blake
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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.)
1976-08-16
Filing date
1977-08-11
Publication date
1979-02-15
1977-08-11
Application filed by Western Electric Co Inc
filed
Critical
Western Electric Co Inc
1979-02-15
Publication of AU2781677A
publication
Critical
patent/AU2781677A/en
1981-02-05
Application granted
granted
Critical
1981-02-05
Publication of AU514331B2
publication
Critical
patent/AU514331B2/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
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
H04B1/581—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 a transformer
AU27816/77A
1976-08-16
1977-08-11
Bidirectional voice frequency repeaters
Expired
AU514331B2
(en)
Applications Claiming Priority (2)
Application Number
Priority Date
Filing Date
Title
US05/714,306
US4074087A
(en)
1976-08-16
1976-08-16
Bidirectional voice frequency repeater
USUS714306
1976-08-16
Publications (2)
Publication Number
Publication Date
AU2781677A
true
AU2781677A
(en)
1979-02-15
AU514331B2
AU514331B2
(en)
1981-02-05
Family
ID=24869508
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
AU27816/77A
Expired
AU514331B2
(en)
1976-08-16
1977-08-11
Bidirectional voice frequency repeaters
Country Status (13)
Country
Link
US
(1)
US4074087A
(en)
JP
(1)
JPS5323504A
(en)
AU
(1)
AU514331B2
(en)
BE
(1)
BE857661A
(en)
CA
(1)
CA1084642A
(en)
DE
(1)
DE2736136C3
(en)
ES
(1)
ES461618A1
(en)
FR
(1)
FR2362535A1
(en)
GB
(1)
GB1563541A
(en)
IL
(1)
IL52705A0
(en)
IT
(1)
IT1084404B
(en)
NL
(1)
NL7708975A
(en)
SE
(1)
SE424127B
(en)
Families Citing this family (18)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4174470A
(en)
*
1978-10-10
1979-11-13
Bell Telephone Laboratories, Incorporated
Electronic hybrid
DE2911866C3
(en)
*
1979-03-26
1982-03-11
Siemens AG, 1000 Berlin und 8000 München
Arrangement with a hybrid circuit for the two-wire to four-wire transition in PCM time division multiplex systems
US4365119A
(en)
*
1980-07-28
1982-12-21
Bell Telephone Laboratories, Incorporated
Automatically adjustable bidirectional-to-unidirectional transmission network
US4368361A
(en)
*
1980-07-28
1983-01-11
Bell Telephone Laboratories, Incorporated
Automatically adjustable bidirectional-to-unidirectional transmission network
JPS5916434A
(en)
*
1982-07-19
1984-01-27
Hitachi Ltd
Optical communication system
GB8404563D0
(en)
*
1984-02-21
1984-03-28
Plessey Co Plc
Adaptive cancellation bridge circuit
US4628157A
(en)
*
1984-09-07
1986-12-09
At&T Bell Laboratories
Bidirectional adaptive voice frequency repeater
AT384919B
(en)
*
1984-10-05
1988-01-25
Alcatel Austria Ag
CIRCUIT ARRANGEMENT FOR TELEPHONE NETWORKS
US4896351A
(en)
*
1985-06-27
1990-01-23
Siemens Ag
Apparatus for separating dc current and ac current components of a composite signal
CA1240088A
(en)
*
1985-11-20
1988-08-02
Mitel Corporation
Solid state trunk circuit
CA1242541A
(en)
*
1985-11-25
1988-09-27
Dany Sylvain
Echo cancellation in two-wire transmission path repeaters
US5282157A
(en)
*
1990-09-13
1994-01-25
Telecom Analysis Systems, Inc.
Input impedance derived from a transfer network
US5471527A
(en)
*
1993-12-02
1995-11-28
Dsc Communications Corporation
Voice enhancement system and method
US5530396A
(en)
*
1994-09-19
1996-06-25
Center For Innovative Technology
Damped EMI input filter power factor correction circuits
DE10147772C1
(en)
*
2001-09-27
2003-09-11
Siemens Ag
Method for operating a transmission system and transmission system in a power supply network
US7190194B2
(en)
*
2004-02-13
2007-03-13
Nec Electronics Corporation
Active hybrid transformer circuit having a replica driver
US7330545B2
(en)
*
2004-09-08
2008-02-12
Analog Devices Inc.
Dual transformer hybrid system and method
US7792196B2
(en)
*
2004-12-28
2010-09-07
Intel Corporation
Single conductor bidirectional communication link
Family Cites Families (12)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2511948A
(en)
*
1950-06-20
Hybrid circuit
US2945920A
(en)
*
1958-01-17
1960-07-19
Motorola Inc
Electronic hybrid
US3586793A
(en)
*
1968-06-21
1971-06-22
John C Neal
Two way repeater
US3904838A
(en)
*
1971-06-04
1975-09-09
Int Standard Electric Corp
Two-wire, bi-directional voice frequency repeater
US3828146A
(en)
*
1973-03-22
1974-08-06
Bell Telephone Labor Inc
Time division conference hybrid circuit
US3835259A
(en)
*
1973-03-22
1974-09-10
Bell Telephone Labor Inc
Time division conference hybrid circuit
US3855431A
(en)
*
1973-04-02
1974-12-17
Itt
Electronic hybrid amplifier
US3889072A
(en)
*
1973-10-19
1975-06-10
Itt
Bi-directional amplification apparatus
US3973089A
(en)
*
1973-10-29
1976-08-03
General Electric Company
Adaptive hybrid circuit
US3872266A
(en)
*
1973-12-13
1975-03-18
Magnetic Controls Co
Telephone monitor circuit
US3970805A
(en)
*
1974-02-22
1976-07-20
Gte Automatic Electric (Canada) Limited
Active hybrid circuit
US3934099A
(en)
*
1974-08-16
1976-01-20
Bell Telephone Laboratories, Incorporated
Bias, feedback and network arrangements for hybrid circuits
1976
1976-08-16
US
US05/714,306
patent/US4074087A/en
not_active
Expired – Lifetime
1977
1977-07-19
CA
CA283,042A
patent/CA1084642A/en
not_active
Expired
1977-08-05
SE
SE7708932A
patent/SE424127B/en
not_active
IP Right Cessation
1977-08-10
BE
BE180061A
patent/BE857661A/en
not_active
IP Right Cessation
1977-08-10
FR
FR7724614A
patent/FR2362535A1/en
active
Granted
1977-08-11
IL
IL52705A
patent/IL52705A0/en
not_active
IP Right Cessation
1977-08-11
IT
IT26650/77A
patent/IT1084404B/en
active
1977-08-11
DE
DE2736136A
patent/DE2736136C3/en
not_active
Expired
1977-08-11
AU
AU27816/77A
patent/AU514331B2/en
not_active
Expired
1977-08-12
JP
JP9622877A
patent/JPS5323504A/en
active
Pending
1977-08-15
NL
NL7708975A
patent/NL7708975A/en
not_active
Application Discontinuation
1977-08-16
ES
ES461618A
patent/ES461618A1/en
not_active
Expired
1977-08-16
GB
GB34306/77A
patent/GB1563541A/en
not_active
Expired
Also Published As
Publication number
Publication date
JPS5323504A
(en)
1978-03-04
IT1084404B
(en)
1985-05-25
DE2736136A1
(en)
1978-02-23
ES461618A1
(en)
1978-07-01
SE7708932L
(en)
1978-02-17
BE857661A
(en)
1977-12-01
NL7708975A
(en)
1978-02-20
AU514331B2
(en)
1981-02-05
DE2736136B2
(en)
1980-12-04
US4074087A
(en)
1978-02-14
GB1563541A
(en)
1980-03-26
SE424127B
(en)
1982-06-28
DE2736136C3
(en)
1981-09-24
IL52705A0
(en)
1977-10-31
FR2362535B1
(en)
1981-07-10
FR2362535A1
(en)
1978-03-17
CA1084642A
(en)
1980-08-26
Similar Documents
Publication
Publication Date
Title
CA1035614A
(en)
1978-08-01
Frequency selective interwaveguide coupler
AU502553B2
(en)
1979-08-02
Radio repeater
AU511778B2
(en)
1980-09-04
Sound insulating belt
AU512013B2
(en)
1980-09-18
Loudspeaker
AU2432377A
(en)
1978-10-19
Airconditioning apparatus
AU507064B2
(en)
1980-01-31
Audio apparatus
AU514331B2
(en)
1981-02-05
Bidirectional voice frequency repeaters
AU2481077A
(en)
1978-11-09
Hydrocyclone
JPS52122035A
(en)
1977-10-13
Stereophonic sound transmitter
JPS5530294A
(en)
1980-03-04
Voice signal transmitting compander
AU2592677A
(en)
1978-12-14
Oligourethanes
AU507419B2
(en)
1980-02-14
Frequency compensated differentail amplifier
AU512512B2
(en)
1980-10-16
Frequency converter
AU499704B2
(en)
1979-04-26
Sound producing device
AU510704B2
(en)
1980-07-10
Speaker cabinet
JPS5335501A
(en)
1978-04-03
Acoustic headphone
AU507587B2
(en)
1980-02-21
Substituted benzoyl-ureidodhenyl ethers
AU501585B2
(en)
1979-06-21
Two voice frequency receiver
AU501042B2
(en)
1979-06-07
Electrodynamic transducer
AU512114B2
(en)
1980-09-25
Sound damping conduit
AU508490B2
(en)
1980-03-20
Optical receiver
JPS5292714A
(en)
1977-08-04
Sound receiver
AU512955B2
(en)
1980-11-06
Cutting apparatus
JPS5383407A
(en)
1978-07-22
Microphone for transceiver
SU680201A1
(en)
1979-08-15
Accoustic device
None