FR2396478A1 - INFORMATION TRANSMISSION SYSTEM - Google Patents

INFORMATION TRANSMISSION SYSTEM

Info

Publication number
FR2396478A1
FR2396478A1 FR7819012A FR7819012A FR2396478A1 FR 2396478 A1 FR2396478 A1 FR 2396478A1 FR 7819012 A FR7819012 A FR 7819012A FR 7819012 A FR7819012 A FR 7819012A FR 2396478 A1 FR2396478 A1 FR 2396478A1
Authority
FR
France
Prior art keywords
digital
network
analog
transmission system
information transmission
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.)
Granted
Application number
FR7819012A
Other languages
French (fr)
Other versions
FR2396478B1 (en
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 AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of FR2396478A1 publication Critical patent/FR2396478A1/en
Application granted granted Critical
Publication of FR2396478B1 publication Critical patent/FR2396478B1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00095—Systems or arrangements for the transmission of the picture signal
    • H04N1/001—Systems or arrangements for the transmission of the picture signal specially adapted for transmission via digital wireline networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/44—Secrecy systems
    • H04N1/448—Rendering the image unintelligible, e.g. scrambling

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Telephonic Communication Services (AREA)
  • Communication Control (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Facsimiles In General (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

L'invention concerne un système de transmission d'informations. Ce système de transmission d'informations comporte un réseau analogique 1 et un réseau supplémentaire 2' superposé au réseau 1 et prévu pour la transmission numérique et comportant ses propres centraux de transit (réseau numérique interurbain), et des centraux locaux numériques D, 9, 11 reliés à des postes d'abonné numériques 8, 13, comportant des convertisseurs analogique/numérique ou numérique/analogique 10, 12, et au réseau numérique interurbain 2' ou au réseau analogique 1. Application notamment à la transmission de conversations, musique, images, textes ou données diverses.The invention relates to an information transmission system. This information transmission system comprises an analog network 1 and an additional network 2 'superimposed on the network 1 and intended for digital transmission and comprising its own transit exchanges (digital interurban network), and local digital exchanges D, 9, 11 connected to digital subscriber stations 8, 13, comprising analog / digital or digital / analog converters 10, 12, and to the digital long distance network 2 'or to the analog network 1. Application in particular to the transmission of conversations, music, images, texts or various data.

FR7819012A 1977-06-30 1978-06-26 INFORMATION TRANSMISSION SYSTEM Expired FR2396478B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2729689A DE2729689B1 (en) 1977-06-30 1977-06-30 Communication system

Publications (2)

Publication Number Publication Date
FR2396478A1 true FR2396478A1 (en) 1979-01-26
FR2396478B1 FR2396478B1 (en) 1986-03-07

Family

ID=6012865

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7819012A Expired FR2396478B1 (en) 1977-06-30 1978-06-26 INFORMATION TRANSMISSION SYSTEM

Country Status (22)

Country Link
JP (1) JPS5413722A (en)
AR (1) AR227616A1 (en)
AT (1) AT361990B (en)
AU (1) AU518649B2 (en)
BE (1) BE868634A (en)
BR (1) BR7804167A (en)
CA (1) CA1108325A (en)
CH (1) CH634702A5 (en)
DE (1) DE2729689B1 (en)
DK (1) DK294678A (en)
FI (1) FI782046A (en)
FR (1) FR2396478B1 (en)
GB (1) GB1603898A (en)
IE (1) IE46933B1 (en)
IT (1) IT1108833B (en)
LU (1) LU79894A1 (en)
MX (1) MX145070A (en)
NL (1) NL7806930A (en)
NO (1) NO148658C (en)
SE (1) SE423588B (en)
YU (1) YU155478A (en)
ZA (1) ZA783426B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2505588A1 (en) * 1981-05-08 1982-11-12 Agence France Presse Analogue luminance signal recovery from digital transmission - by using D=A converter and signal processor for decomposing pixel into components dependent on neighbouring pixels
EP0065454A1 (en) * 1981-05-08 1982-11-24 Organisme Autonome doté de la personnalité Civile AGENCE FRANCE-PRESSE Method and device for reconstructing an analogue luminance signal from a digital signal

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE1263T1 (en) * 1978-06-20 1982-07-15 Siemens Aktiengesellschaft Berlin Und Muenchen MESSAGE TRANSMISSION SYSTEM.
DE2917570B1 (en) * 1979-04-30 1980-05-14 Telefonbau & Normalzeit Gmbh Circuit arrangement for a digital telephone subscriber station
DE2919618C2 (en) * 1979-05-16 1981-06-19 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Circuit arrangement for telephone sets connected to PCM connection lines
DE3028155C2 (en) * 1980-07-25 1982-10-07 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Digital subscriber line for telephony, including text and data services
DE3033871C2 (en) * 1980-09-09 1982-11-25 Siemens AG, 1000 Berlin und 8000 München Messaging system
JPS58138155A (en) * 1982-02-12 1983-08-16 Nippon Telegr & Teleph Corp <Ntt> Selective connection system for composite terminal
DE3217430A1 (en) * 1982-05-08 1983-11-10 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Circuit arrangement for a digital telecommunications switching system for pulse code and pulse delta modulation
GB2159367B (en) * 1984-05-25 1987-11-04 Stc Plc Telephone exchanges
JPS6120465A (en) * 1984-07-06 1986-01-29 Toshiba Corp Data collecting system
CA1278121C (en) * 1987-12-23 1990-12-18 Michael H. Reichmann Data communication system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2505588A1 (en) * 1981-05-08 1982-11-12 Agence France Presse Analogue luminance signal recovery from digital transmission - by using D=A converter and signal processor for decomposing pixel into components dependent on neighbouring pixels
EP0065454A1 (en) * 1981-05-08 1982-11-24 Organisme Autonome doté de la personnalité Civile AGENCE FRANCE-PRESSE Method and device for reconstructing an analogue luminance signal from a digital signal

Also Published As

Publication number Publication date
FI782046A (en) 1978-12-31
ATA474678A (en) 1980-09-15
AU518649B2 (en) 1981-10-15
AU3710478A (en) 1979-12-20
IT7825005A0 (en) 1978-06-27
FR2396478B1 (en) 1986-03-07
LU79894A1 (en) 1980-01-22
GB1603898A (en) 1981-12-02
JPS5413722A (en) 1979-02-01
AR227616A1 (en) 1982-11-30
SE7807377L (en) 1978-12-31
ZA783426B (en) 1979-06-27
NL7806930A (en) 1979-01-03
CH634702A5 (en) 1983-02-15
IE46933B1 (en) 1983-11-02
DK294678A (en) 1978-12-31
BR7804167A (en) 1979-04-10
NO148658C (en) 1983-11-16
CA1108325A (en) 1981-09-01
MX145070A (en) 1982-01-04
DE2729689B1 (en) 1978-12-07
IT1108833B (en) 1985-12-09
NO148658B (en) 1983-08-08
SE423588B (en) 1982-05-10
YU155478A (en) 1982-06-30
IE781186L (en) 1978-12-30
NO782243L (en) 1979-01-03
BE868634A (en) 1979-01-02
AT361990B (en) 1981-04-10

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Legal Events

Date Code Title Description
ST Notification of lapse