JPS5218118A - Line transmission system - Google Patents

Line transmission system

Info

Publication number
JPS5218118A
JPS5218118A JP9310175A JP9310175A JPS5218118A JP S5218118 A JPS5218118 A JP S5218118A JP 9310175 A JP9310175 A JP 9310175A JP 9310175 A JP9310175 A JP 9310175A JP S5218118 A JPS5218118 A JP S5218118A
Authority
JP
Japan
Prior art keywords
transmission system
line transmission
communication
current
ofder
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.)
Pending
Application number
JP9310175A
Other languages
Japanese (ja)
Inventor
Kozo Kamata
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9310175A priority Critical patent/JPS5218118A/en
Priority to US05/695,760 priority patent/US4150260A/en
Priority to DE2627140A priority patent/DE2627140C3/en
Priority to GB24968/76A priority patent/GB1554421A/en
Priority to CA255,082A priority patent/CA1057437A/en
Priority to NLAANVRAGE7606570,A priority patent/NL178117C/en
Publication of JPS5218118A publication Critical patent/JPS5218118A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: In ofder to make the communication with the weak communication current possible, through superposing DC current to the transmission line.
COPYRIGHT: (C)1977,JPO&Japio
JP9310175A 1975-06-18 1975-08-01 Line transmission system Pending JPS5218118A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP9310175A JPS5218118A (en) 1975-08-01 1975-08-01 Line transmission system
US05/695,760 US4150260A (en) 1975-06-18 1976-06-14 Subscriber's circuit for four-wire-system local switch
DE2627140A DE2627140C3 (en) 1975-06-18 1976-06-16 Hybrid circuit in subscriber circuit
GB24968/76A GB1554421A (en) 1975-06-18 1976-06-16 Subscriber's circuit for four-wire-system local switch
CA255,082A CA1057437A (en) 1975-06-18 1976-06-17 Subscriber's circuit for four-wire-system local switch
NLAANVRAGE7606570,A NL178117C (en) 1975-06-18 1976-06-17 COUPLING DEVICE FOR FORMING A COUPLING BETWEEN A FOUR-WAY PATH OF A TIME MULTIPLEX SWITCH NETWORK AND A TWO-WIRE SUBSCRIBER LINE.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9310175A JPS5218118A (en) 1975-08-01 1975-08-01 Line transmission system

Publications (1)

Publication Number Publication Date
JPS5218118A true JPS5218118A (en) 1977-02-10

Family

ID=14073121

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9310175A Pending JPS5218118A (en) 1975-06-18 1975-08-01 Line transmission system

Country Status (1)

Country Link
JP (1) JPS5218118A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5092622A (en) * 1973-12-14 1975-07-24

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5092622A (en) * 1973-12-14 1975-07-24

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