IT964685B - TELEPHONE STATION FOR CLOSED CIRCUIT SYSTEMS - Google Patents

TELEPHONE STATION FOR CLOSED CIRCUIT SYSTEMS

Info

Publication number
IT964685B
IT964685B IT6929972A IT6929972A IT964685B IT 964685 B IT964685 B IT 964685B IT 6929972 A IT6929972 A IT 6929972A IT 6929972 A IT6929972 A IT 6929972A IT 964685 B IT964685 B IT 964685B
Authority
IT
Italy
Prior art keywords
closed circuit
telephone station
circuit systems
systems
telephone
Prior art date
Application number
IT6929972A
Other languages
Italian (it)
Original Assignee
Cit Alcatel
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 Cit Alcatel filed Critical Cit Alcatel
Application granted granted Critical
Publication of IT964685B publication Critical patent/IT964685B/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q3/00—Igniters using electrically-produced sparks
    • F23Q3/002—Igniters using electrically-produced sparks using piezoelectric elements
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • G03B15/04—Combinations of cameras with non-electronic flash apparatus; Non-electronic flash units
    • G03B15/0452—Electrical ignition means connected to the shutter
    • G03B15/0463—Piezoelectric ignition mechanisms
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Telephonic Communication Services (AREA)
IT6929972A 1971-07-16 1972-07-15 TELEPHONE STATION FOR CLOSED CIRCUIT SYSTEMS IT964685B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7126208A FR2146542A5 (en) 1971-07-16 1971-07-16

Publications (1)

Publication Number Publication Date
IT964685B true IT964685B (en) 1974-01-31

Family

ID=9080502

Family Applications (1)

Application Number Title Priority Date Filing Date
IT6929972A IT964685B (en) 1971-07-16 1972-07-15 TELEPHONE STATION FOR CLOSED CIRCUIT SYSTEMS

Country Status (5)

Country Link
BE (1) BE786051A (en)
DE (1) DE2235079A1 (en)
FR (1) FR2146542A5 (en)
GB (1) GB1354833A (en)
IT (1) IT964685B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2538637C2 (en) * 1975-08-30 1983-05-05 Heinrich-Hertz-Institut für Nachrichtentechnik Berlin GmbH, 1000 Berlin Digital time division multiplex messaging system
DE2917675A1 (en) * 1979-04-27 1980-11-06 Hertz Inst Heinrich DIGITAL TIME MULTIPLEX MESSAGE SYSTEM
JPS607538A (en) * 1983-06-27 1985-01-16 Dainippon Screen Mfg Co Ltd Data transfer control method

Also Published As

Publication number Publication date
BE786051A (en) 1973-01-10
GB1354833A (en) 1974-06-05
DE2235079A1 (en) 1973-01-25
FR2146542A5 (en) 1973-03-02

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