FR2405598A1 - Automatic configuration control of MODEM channels - employs detector comparing present and required shapes to produce control signal - Google Patents

Automatic configuration control of MODEM channels - employs detector comparing present and required shapes to produce control signal

Info

Publication number
FR2405598A1
FR2405598A1 FR7901961A FR7901961A FR2405598A1 FR 2405598 A1 FR2405598 A1 FR 2405598A1 FR 7901961 A FR7901961 A FR 7901961A FR 7901961 A FR7901961 A FR 7901961A FR 2405598 A1 FR2405598 A1 FR 2405598A1
Authority
FR
France
Prior art keywords
control signal
modem
signals
control signals
automatic configuration
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
FR7901961A
Other languages
French (fr)
Other versions
FR2405598B1 (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.)
Racal Milgo Inc
Original Assignee
Racal Milgo 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.)
Filing date
Publication date
Priority claimed from FR7814025A external-priority patent/FR2390861A1/en
Application filed by Racal Milgo Inc filed Critical Racal Milgo Inc
Publication of FR2405598A1 publication Critical patent/FR2405598A1/en
Application granted granted Critical
Publication of FR2405598B1 publication Critical patent/FR2405598B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
    • H04J3/1682—Allocation of channels according to the instantaneous demands of the users, e.g. concentrated multiplexers, statistical multiplexers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1438—Negotiation of transmission parameters prior to communication
    • H04L5/1446—Negotiation of transmission parameters prior to communication of transmission speed

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

Digital data communication is carried out by multiplexing several channels onto a single transmission channel. A modem is employed and automatically reacts to control signals to select a particular channel configuration. A modem contains a circuit to multiplex several channels into a number of configurations in response to control signals. A detector automatically senses the control signals and compares the configuration required with the present shape to produce error signals which activate switches to achieve the required channel arrangement. The control signal data is coded and a particular code representing the present arrangement is stored. The control signal for a new configuration replaces this stored data as a comparison circuit determines the differences. A comparator receiving the signals produces a common format.
FR7901961A 1977-05-11 1979-01-25 Automatic configuration control of MODEM channels - employs detector comparing present and required shapes to produce control signal Granted FR2405598A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US79587677A 1977-05-11 1977-05-11
FR7814025A FR2390861A1 (en) 1977-05-11 1978-05-11 APPARATUS FOR APPLYING A CHANNEL COMBINATION REQUEST TO A MODULATOR-DEMODULATOR SYSTEM

Publications (2)

Publication Number Publication Date
FR2405598A1 true FR2405598A1 (en) 1979-05-04
FR2405598B1 FR2405598B1 (en) 1983-12-02

Family

ID=26220591

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7901961A Granted FR2405598A1 (en) 1977-05-11 1979-01-25 Automatic configuration control of MODEM channels - employs detector comparing present and required shapes to produce control signal

Country Status (1)

Country Link
FR (1) FR2405598A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997025791A2 (en) * 1996-01-04 1997-07-17 Robert Bosch Gmbh Process for the joint use of a time-multiplex transmission channel by a plurality of transmitters

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3700820A (en) * 1966-04-15 1972-10-24 Ibm Adaptive digital communication system
US3790715A (en) * 1972-07-28 1974-02-05 Bell Telephone Labor Inc Digital transmission terminal for voice and low speed data
US3982077A (en) * 1975-04-07 1976-09-21 International Telephone And Telegraph Corporation Asynchronous multiplexer and demultiplexer combination

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3700820A (en) * 1966-04-15 1972-10-24 Ibm Adaptive digital communication system
US3790715A (en) * 1972-07-28 1974-02-05 Bell Telephone Labor Inc Digital transmission terminal for voice and low speed data
US3982077A (en) * 1975-04-07 1976-09-21 International Telephone And Telegraph Corporation Asynchronous multiplexer and demultiplexer combination

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997025791A2 (en) * 1996-01-04 1997-07-17 Robert Bosch Gmbh Process for the joint use of a time-multiplex transmission channel by a plurality of transmitters
WO1997025791A3 (en) * 1996-01-04 1997-09-12 Bosch Gmbh Robert Process for the joint use of a time-multiplex transmission channel by a plurality of transmitters

Also Published As

Publication number Publication date
FR2405598B1 (en) 1983-12-02

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Legal Events

Date Code Title Description
ST Notification of lapse