FR2290801A1 - Numeric transmission and reception centre - which is for use at millimetric wavelengths, has automatic frame length correction system - Google Patents

Numeric transmission and reception centre - which is for use at millimetric wavelengths, has automatic frame length correction system

Info

Publication number
FR2290801A1
FR2290801A1 FR7437076A FR7437076A FR2290801A1 FR 2290801 A1 FR2290801 A1 FR 2290801A1 FR 7437076 A FR7437076 A FR 7437076A FR 7437076 A FR7437076 A FR 7437076A FR 2290801 A1 FR2290801 A1 FR 2290801A1
Authority
FR
France
Prior art keywords
frame
frame length
correction system
reception
length correction
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
FR7437076A
Other languages
French (fr)
Other versions
FR2290801B1 (en
Inventor
Paul Chavanat
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7437076A priority Critical patent/FR2290801A1/en
Priority to FR7510626A priority patent/FR2306579A2/en
Publication of FR2290801A1 publication Critical patent/FR2290801A1/en
Application granted granted Critical
Publication of FR2290801B1 publication Critical patent/FR2290801B1/fr
Granted 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
    • H04B1/44—Transmit/receive switching
    • 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
    • H04L5/18—Automatic changing of the traffic direction

Abstract

The data transmission and reception centre is for two way communication limited by optical visibility, in the millimetric electromagnetic wave-band. The distance between two posts may be about 15 milometers, corresponding to a go and return time of 100 microseconds, and the system uses a 125 microsecond cycle. Data is transmitted in frame form, and the frame generator is used to provide identification of frame transmission and reception, synchronisation being achieved using a comparator measuring the duration of the two phases, producing an error signal if there is any inequality, and correction of the frame duration with itself is a function of the distance between the two stations.
FR7437076A 1974-11-08 1974-11-08 Numeric transmission and reception centre - which is for use at millimetric wavelengths, has automatic frame length correction system Granted FR2290801A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7437076A FR2290801A1 (en) 1974-11-08 1974-11-08 Numeric transmission and reception centre - which is for use at millimetric wavelengths, has automatic frame length correction system
FR7510626A FR2306579A2 (en) 1974-11-08 1975-04-04 Packet transmission of digital data on single channel - permits reduction of unused time periods on line by use of synchroniser and memory

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7437076A FR2290801A1 (en) 1974-11-08 1974-11-08 Numeric transmission and reception centre - which is for use at millimetric wavelengths, has automatic frame length correction system

Publications (2)

Publication Number Publication Date
FR2290801A1 true FR2290801A1 (en) 1976-06-04
FR2290801B1 FR2290801B1 (en) 1979-09-21

Family

ID=9144791

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7437076A Granted FR2290801A1 (en) 1974-11-08 1974-11-08 Numeric transmission and reception centre - which is for use at millimetric wavelengths, has automatic frame length correction system

Country Status (1)

Country Link
FR (1) FR2290801A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991020135A1 (en) * 1990-06-12 1991-12-26 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Process and system for transmitting energy and data

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991020135A1 (en) * 1990-06-12 1991-12-26 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Process and system for transmitting energy and data

Also Published As

Publication number Publication date
FR2290801B1 (en) 1979-09-21

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