DE3673816D1 - Schnittstellenschaltung. - Google Patents

Schnittstellenschaltung.

Info

Publication number: DE3673816D1
Authority: DE; Germany
Prior art keywords: interface circuit; interface; circuit
Prior art date: 1985-11-22
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.): Revoked

Application number

DE8686906882T

Other languages

English (en)

Inventor

Wolsey Manor Road Cook

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.)

British Telecommunications PLC

Original Assignee

British Telecommunications PLC

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.)

1985-11-22

Filing date

1986-11-19

Publication date

1990-10-04

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10588644&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3673816(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1986-11-19 Application filed by British Telecommunications PLC filed Critical British Telecommunications PLC

1990-10-04 Application granted granted Critical

1990-10-04 Publication of DE3673816D1 publication Critical patent/DE3673816D1/de

2006-11-20 Anticipated expiration legal-status Critical

Status Revoked 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
- H04B1/58—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
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/005—Interface circuits for subscriber lines

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Computer Networks & Wireless Communication (AREA)
Networks Using Active Elements (AREA)
Interface Circuits In Exchanges (AREA)
Analogue/Digital Conversion (AREA)
Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

DE8686906882T 1985-11-22 1986-11-19 Schnittstellenschaltung. Revoked DE3673816D1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
GB858528843A GB8528843D0 (en)	1985-11-22	1985-11-22	Codec
PCT/GB1986/000707 WO1987003440A1 (en)	1985-11-22	1986-11-19	Interface circuit

Publications (1)

Publication Number	Publication Date
DE3673816D1 true DE3673816D1 (de)	1990-10-04

Family

ID=10588644

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE8686906882T Revoked DE3673816D1 (de)	1985-11-22	1986-11-19	Schnittstellenschaltung.

Country Status (7)

Country	Link
US (1)	US4894864A (de)
EP (1)	EP0247118B1 (de)
JP (1)	JPS63501465A (de)
CA (1)	CA1267727A (de)
DE (1)	DE3673816D1 (de)
GB (1)	GB8528843D0 (de)
WO (1)	WO1987003440A1 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SE457923B (sv) *	1987-06-15	1989-02-06	Ellemtel Utvecklings Ab	Anordning foer att aastadkomma en styrbar linjeavslutningsimpedans
JP2999214B2 (ja) *	1990-03-02	2000-01-17	株式会社東芝	伝送入出力回路
DE4008450A1 (de) *	1990-03-16	1991-09-19	Telefonbau & Normalzeit Gmbh	Schaltungsanordnung zur signal- und informationsumsetzung zwischen analog betriebenen verbindungsleitungen und digital betriebenen anschlussorganen in kommunikations-vermittlungsanlagen
IT1259009B (it) *	1992-07-24	1996-03-11	Italtel Telematica	Metodo e dispositivo per l'adattamento delle impedenze della terminazione di utente e dell'attacco di utente alla impedenza caratteristica della linea telefonica di utente
MY110609A (en) *	1993-06-30	1998-08-29	Harris Corp	Carbon microphone interface for a modem
EP0642229B1 (de) *	1993-09-02	1999-11-24	Siemens Aktiengesellschaft	Schaltungsanordnung zur Erzeugung einer variablen Leitungsabschlussimpedanz
US6041114A (en)	1997-03-27	2000-03-21	Active Voice Corporation	Telecommute server
US6181792B1 (en)	1998-01-23	2001-01-30	International Business Machines Corporation	Communication interface having synthesized matching impedances for different frequency bands and a design method therefor
US6198817B1 (en)	1998-01-23	2001-03-06	International Business Machines Corporation	Communication interface having combined shaping of receive response and synthesized matching terminating impedances for different frequency bands and a design method therefor
US6665403B1 (en) *	1999-05-11	2003-12-16	Agere Systems Inc.	Digital gyrator
US6553118B1 (en) *	1999-05-11	2003-04-22	Agere Systems Inc.	Method and apparatus for calculating DC offset in a digital gyrator
US6615027B1 (en) *	2000-01-21	2003-09-02	Qualcomm Incorporated	Method and circuit for providing interface signals between integrated circuits
US6573729B1 (en)	2000-08-28	2003-06-03	3Com Corporation	Systems and methods for impedance synthesis

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4270027A (en) *	1979-11-28	1981-05-26	International Telephone And Telegraph Corporation	Telephone subscriber line unit with sigma-delta digital to analog converter
JPS5725731A (en) *	1980-07-22	1982-02-10	Iwatsu Electric Co Ltd	Hybrid circuit
US4351060A (en) *	1980-10-23	1982-09-21	International Telephone And Telegraph Corporation	Automatic, digitally synthesized matching line terminating impedance
EP0163298B1 (de) *	1984-05-30	1992-09-30	Hitachi, Ltd.	PCM-Coder/Decoder mit Zweidraht/Vierdrahtumwandlung
US4629829A (en) *	1984-12-14	1986-12-16	Motorola, Inc.	Full duplex speakerphone for radio and landline telephones

1985
- 1985-11-22 GB GB858528843A patent/GB8528843D0/en active Pending
1986
- 1986-11-19 EP EP86906882A patent/EP0247118B1/de not_active Expired
- 1986-11-19 DE DE8686906882T patent/DE3673816D1/de not_active Revoked
- 1986-11-19 JP JP61506108A patent/JPS63501465A/ja active Pending
- 1986-11-19 WO PCT/GB1986/000707 patent/WO1987003440A1/en not_active Application Discontinuation
- 1986-11-19 US US07/095,573 patent/US4894864A/en not_active Expired - Fee Related
- 1986-11-21 CA CA000523506A patent/CA1267727A/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
CA1267727A (en)	1990-04-10
US4894864A (en)	1990-01-16
EP0247118A1 (de)	1987-12-02
JPS63501465A (ja)	1988-06-02
GB8528843D0 (en)	1985-12-24
EP0247118B1 (de)	1990-08-29
WO1987003440A1 (en)	1987-06-04

Legal Events

Date	Code	Title	Description
1991-09-05	8363	Opposition against the patent
1992-10-08	8331	Complete revocation

Publication	Publication Date	Title
DE3670154D1 (de)	1990-05-10	Elektronisches hubodometer.
DE3677710D1 (de)	1991-04-04	Cefuroximaxetil-dragee.
DE3687153D1 (de)	1993-01-07	Teilnehmerschnittstellenschaltung.
DE3681045D1 (de)	1991-10-02	Vorladungsschaltung.
DE3689462D1 (de)	1994-02-10	Logische Schaltung.
DE3688564D1 (de)	1993-07-22	Sequentielle logische schaltung.
DE3673816D1 (de)	1990-10-04	Schnittstellenschaltung.
FI862890A0 (fi)	1986-07-09	Elektrisk klaemlist.
FI863739A (fi)	1987-04-03	Isbrytare.
DE3669793D1 (de)	1990-04-26	Halbleiterkreiseinrichtung.
DE3689879D1 (de)	1994-07-07	Arithmetisch-logische Schaltung.
FI862954A0 (fi)	1986-07-15	Korrigeringsanordning foer braensle-luftfoerhaollande ( ) i en braennmotors turbofoergasare.
NO855278L (no)	1986-10-27	Elektrisk forbindelse.
DE3685340D1 (de)	1992-06-25	Mischschaltung.
DE3687047D1 (de)	1992-12-10	Uebertragungsschaltung.
DE3668522D1 (de)	1990-03-01	Elektronischer schalter.
DE3673520D1 (de)	1990-09-20	Perfluorpolyaether.
NO871078L (no)	1987-03-16	Antiluftvaapensikte.
DE3686073D1 (de)	1992-08-27	Logischer schaltkreis.
NL192708B (nl)	1997-08-01	Kortsluitbeveiliging.
IT8619722A0 (it)	1986-03-12	Disposizione circuitale.
DE3673138D1 (de)	1990-09-06	Logische schaltung.
FI863783A0 (fi)	1986-09-19	Nytt framstaellningsfoerfarande foer vaermebestaendig transglukosidas.
DE68924299D1 (de)	1995-10-26	Schnittstellenschaltung.
DE3689291D1 (de)	1993-12-23	Bistabile Schaltung.