FR2295666A1 - Telephone communication exchange - has switching unit for many users and uses photoelectric devices and holograms - Google Patents

Telephone communication exchange - has switching unit for many users and uses photoelectric devices and holograms

Info

Publication number
FR2295666A1
FR2295666A1 FR7442223A FR7442223A FR2295666A1 FR 2295666 A1 FR2295666 A1 FR 2295666A1 FR 7442223 A FR7442223 A FR 7442223A FR 7442223 A FR7442223 A FR 7442223A FR 2295666 A1 FR2295666 A1 FR 2295666A1
Authority
FR
France
Prior art keywords
switching unit
telephone communication
communication exchange
holograms
panel
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
FR7442223A
Other languages
French (fr)
Other versions
FR2295666B1 (en
Inventor
Hubert Debart
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.)
Alcatel Lucent SAS
Original Assignee
Compagnie Generale dElectricite 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 Compagnie Generale dElectricite SA filed Critical Compagnie Generale dElectricite SA
Priority to FR7442223A priority Critical patent/FR2295666A1/en
Publication of FR2295666A1 publication Critical patent/FR2295666A1/en
Application granted granted Critical
Publication of FR2295666B1 publication Critical patent/FR2295666B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/52—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
    • H04Q3/526—Optical switching systems

Abstract

A telephone communication exchange has a reduced size and can handle communications between up to 16, 384 users. It comprises a switching unit and a control unit (2). The control (2) receives the numbers of the caller and the receiver, and controls the switching unit to establish communications between the caller and the receiver. The switching unit has laser diode light emitters (ET6) made up as a square matrix and which transmit a call signal modulated light, a receiving panel (6) made up as a square matrix of photodiodes (RT9) connected to the receiver and transmitting a signal from the modulated light, and a deflecting panel (4) also made up as a square matrix of hologrammes (T6). The deflecting panel has a photochromatic obstructor (8) which may allow light transmission or may prevent it by means of a panel (10) and a mirror (14).
FR7442223A 1974-12-20 1974-12-20 Telephone communication exchange - has switching unit for many users and uses photoelectric devices and holograms Granted FR2295666A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7442223A FR2295666A1 (en) 1974-12-20 1974-12-20 Telephone communication exchange - has switching unit for many users and uses photoelectric devices and holograms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7442223A FR2295666A1 (en) 1974-12-20 1974-12-20 Telephone communication exchange - has switching unit for many users and uses photoelectric devices and holograms

Publications (2)

Publication Number Publication Date
FR2295666A1 true FR2295666A1 (en) 1976-07-16
FR2295666B1 FR2295666B1 (en) 1977-05-20

Family

ID=9146452

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7442223A Granted FR2295666A1 (en) 1974-12-20 1974-12-20 Telephone communication exchange - has switching unit for many users and uses photoelectric devices and holograms

Country Status (1)

Country Link
FR (1) FR2295666A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005114A1 (en) * 1978-04-21 1979-10-31 Michel Emile Treheux Spatial switching and controlling system of an optical switching network
WO1980001028A1 (en) * 1978-11-08 1980-05-15 Rozenwaig Boris Signal switching device through optical means and self switches comprising such device
US4512036A (en) * 1980-02-04 1985-04-16 Herzl Laor Piezoelectric apparatus for positioning optical fibers
WO1985004544A1 (en) * 1984-03-22 1985-10-10 Fraunhofer-Gesellschaft Zur Förderung Der Angewand Arrangement for transferring digital data
US4641376A (en) * 1982-04-30 1987-02-03 Boris Rozenwaig Multi-channel multi-cell optoelectronic switching networks for multi-service telecommunications systems
EP0304043A2 (en) * 1987-08-19 1989-02-22 Canon Kabushiki Kaisha Optical switch array provided with a mask having openings of a predetermined pattern and shutters corresponding to the pattern

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2146635A5 (en) * 1971-07-21 1973-03-02 Comp Generale Electricite
FR2171241A1 (en) * 1972-02-09 1973-09-21 Philips Nv

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2146635A5 (en) * 1971-07-21 1973-03-02 Comp Generale Electricite
FR2171241A1 (en) * 1972-02-09 1973-09-21 Philips Nv

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005114A1 (en) * 1978-04-21 1979-10-31 Michel Emile Treheux Spatial switching and controlling system of an optical switching network
FR2423941A1 (en) * 1978-04-21 1979-11-16 Treheux Michel SPATIAL SWITCHING AND CONTROL SYSTEM OF OPTICAL FREQUENCY SIGNALS SWITCHING NETWORK
WO1980001028A1 (en) * 1978-11-08 1980-05-15 Rozenwaig Boris Signal switching device through optical means and self switches comprising such device
US4512036A (en) * 1980-02-04 1985-04-16 Herzl Laor Piezoelectric apparatus for positioning optical fibers
US4543663A (en) * 1980-02-04 1985-09-24 Herzl Laor Piezoelectric apparatus for positioning optical fibers
US4580292A (en) * 1980-02-04 1986-04-01 Herzl Laor Communications exchange
US4651343A (en) * 1980-02-04 1987-03-17 Herzl Laor Piezoelectric apparatus for positioning optical fibers
US4641376A (en) * 1982-04-30 1987-02-03 Boris Rozenwaig Multi-channel multi-cell optoelectronic switching networks for multi-service telecommunications systems
WO1985004544A1 (en) * 1984-03-22 1985-10-10 Fraunhofer-Gesellschaft Zur Förderung Der Angewand Arrangement for transferring digital data
EP0304043A2 (en) * 1987-08-19 1989-02-22 Canon Kabushiki Kaisha Optical switch array provided with a mask having openings of a predetermined pattern and shutters corresponding to the pattern
EP0304043A3 (en) * 1987-08-19 1990-06-27 Canon Kabushiki Kaisha Optical switch array provided with a mask having openings of a predetermined pattern and shutters corresponding to the pattern

Also Published As

Publication number Publication date
FR2295666B1 (en) 1977-05-20

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Legal Events

Date Code Title Description
ST Notification of lapse