GB1452158A - Telegraphy subsribers dc keying line circuits - Google Patents

Telegraphy subsribers dc keying line circuits

Info

Publication number: GB1452158A
Authority: GB; United Kingdom
Prior art keywords: circuit; exchange; current; voltage; telegraphy
Prior art date: 1973-03-05
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.): Expired

Application number

GB681374A

Other languages

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.)

Siemens Corp

Original Assignee

Siemens Corp

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.)

1973-03-05

Filing date

1974-02-14

Publication date

1976-10-13

1974-02-14 Application filed by Siemens Corp filed Critical Siemens Corp

1976-10-13 Publication of GB1452158A publication Critical patent/GB1452158A/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/12—Compensating for variations in line impedance

Landscapes

Engineering & Computer Science (AREA)
Power Engineering (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Interface Circuits In Exchanges (AREA)
Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Radio Relay Systems (AREA)

GB681374A 1973-03-05 1974-02-14 Telegraphy subsribers dc keying line circuits Expired GB1452158A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE2310940A DE2310940C3 (de)	1973-03-05	1973-03-05	Schaltungsanordnung zum Anschließen von Telegrafieteilnehmern an Wechselstrom-Übertragungseinrichtungen und Vermittlungsanlagen

Publications (1)

Publication Number	Publication Date
GB1452158A true GB1452158A (en)	1976-10-13

Family

ID=5873867

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB681374A Expired GB1452158A (en)	1973-03-05	1974-02-14	Telegraphy subsribers dc keying line circuits

Country Status (12)

Country	Link
AT (1)	AT342120B (fr)
BE (1)	BE811886A (fr)
BR (1)	BR7401553D0 (fr)
CH (1)	CH586981A5 (fr)
DE (1)	DE2310940C3 (fr)
FI (1)	FI60330C (fr)
FR (1)	FR2220939B1 (fr)
GB (1)	GB1452158A (fr)
IT (1)	IT1011028B (fr)
LU (1)	LU69544A1 (fr)
NL (1)	NL7402912A (fr)
NO (1)	NO140318C (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL7704703A (nl) *	1977-04-29	1978-10-31	Philips Nv	Electronische gelijkstroomtelegrafiezender.
DE2833732C2 (de) *	1978-08-01	1981-12-03	Siemens Ag, 1000 Berlin Und 8000 Muenchen	Schaltungsanordnung zur Aussendung von Gleichstromtelegrafiezeichen
NL181896C (nl) *	1979-06-05	1987-11-16	Philips Nv	Elektronische zender voor gelijkstroomtelegrafietransmissie.
DE2925747C2 (de) *	1979-06-26	1981-07-30	Siemens Ag, 1000 Berlin Und 8000 Muenchen	Schaltungsanordnung für einen elektronischen Gleichstrom-Telegrafiesender

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2035379C3 (de) *	1970-07-16	1975-10-09	Siemens Ag	Schaltungsanordnung zum Einstellen des Linienstromes in Telegrafieteilnehmer-Anschlußschaltungen einer Vermittlungsanlage
FR2146091B1 (fr) *	1971-07-16	1976-05-28	Constr Telephoniques
GB1424525A (en) *	1972-05-11	1976-02-11	Elliott Brothers London Ltd	Data transmission system

1973
- 1973-03-05 DE DE2310940A patent/DE2310940C3/de not_active Expired
1974
- 1974-01-30 AT AT74774A patent/AT342120B/de not_active IP Right Cessation
- 1974-02-08 NO NO740433A patent/NO140318C/no unknown
- 1974-02-14 GB GB681374A patent/GB1452158A/en not_active Expired
- 1974-02-14 FI FI425/74A patent/FI60330C/fi active
- 1974-02-15 CH CH214274A patent/CH586981A5/xx not_active IP Right Cessation
- 1974-03-04 BR BR1553/74A patent/BR7401553D0/pt unknown
- 1974-03-04 LU LU69544A patent/LU69544A1/xx unknown
- 1974-03-04 NL NL7402912A patent/NL7402912A/xx not_active Application Discontinuation
- 1974-03-05 BE BE141654A patent/BE811886A/fr unknown
- 1974-03-05 FR FR7407508A patent/FR2220939B1/fr not_active Expired
- 1974-03-05 IT IT49008/74A patent/IT1011028B/it active

Also Published As

Publication number	Publication date
FI60330B (fi)	1981-08-31
DE2310940C3 (de)	1979-05-03
CH586981A5 (fr)	1977-04-15
LU69544A1 (fr)	1974-10-09
FI60330C (fi)	1981-12-10
FR2220939A1 (fr)	1974-10-04
NO740433L (no)	1974-09-06
DE2310940B2 (de)	1978-08-10
NO140318C (no)	1979-08-08
AT342120B (de)	1978-03-10
BE811886A (fr)	1974-09-05
DE2310940A1 (de)	1974-09-19
ATA74774A (de)	1977-07-15
NO140318B (no)	1979-04-30
IT1011028B (it)	1977-01-20
NL7402912A (fr)	1974-09-09
FR2220939B1 (fr)	1977-09-23
BR7401553D0 (pt)	1974-11-19

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Legal Events

Date	Code	Title	Description
1977-02-23	PS	Patent sealed
1984-10-24	PCNP	Patent ceased through non-payment of renewal fee