FR2418582A1 - PULSE INFRARED RADIATION TRANSMISSION DEVICE - Google Patents

PULSE INFRARED RADIATION TRANSMISSION DEVICE

Info

Publication number
FR2418582A1
FR2418582A1 FR7808370A FR7808370A FR2418582A1 FR 2418582 A1 FR2418582 A1 FR 2418582A1 FR 7808370 A FR7808370 A FR 7808370A FR 7808370 A FR7808370 A FR 7808370A FR 2418582 A1 FR2418582 A1 FR 2418582A1
Authority
FR
France
Prior art keywords
frequency
transmitter
transmission device
infrared radiation
radiation 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.)
Withdrawn
Application number
FR7808370A
Other languages
French (fr)
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.)
VRIENS FLORIS
Original Assignee
VRIENS FLORIS
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 VRIENS FLORIS filed Critical VRIENS FLORIS
Publication of FR2418582A1 publication Critical patent/FR2418582A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H04B10/114—Indoor or close-range type systems
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
    • G08C23/04—Non-electrical signal transmission systems, e.g. optical systems using light waves, e.g. infrared

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Selective Calling Equipment (AREA)
  • Optical Communication System (AREA)

Abstract

The device comprises a transmitter and a receiver provided with an infrared transmission sensor, an amplifier and an output stage for switching an application circuit. In the device which is insensitive to any radiation not originating from the transmitter and which is frequency-selective, the receiver (30) is equipped with a selective circuit (56) whose input is loaded, in the absence of a signal originating from the transmitter (10, 110, 210), with a second signal having an oscillation frequency (fo) and which includes a frequency comparator, this selective circuit (56) being arranged such that it delivers a control signal to the output stage (60) only when the input frequency (fo or f1...fn) is at least close to the frequency (f1...fn) transmitted by the transmitter. This device is useful in any remote control and remote measuring system.
FR7808370A 1978-02-23 1978-03-22 PULSE INFRARED RADIATION TRANSMISSION DEVICE Withdrawn FR2418582A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH197278A CH621219A5 (en) 1978-02-23 1978-02-23 Device for transmission by pulsed infrared radiation

Publications (1)

Publication Number Publication Date
FR2418582A1 true FR2418582A1 (en) 1979-09-21

Family

ID=4222918

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7808370A Withdrawn FR2418582A1 (en) 1978-02-23 1978-03-22 PULSE INFRARED RADIATION TRANSMISSION DEVICE

Country Status (2)

Country Link
CH (1) CH621219A5 (en)
FR (1) FR2418582A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0203293A1 (en) * 1985-03-29 1986-12-03 Wella Aktiengesellschaft Control circuit for an electric sauna

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2187157A5 (en) * 1972-05-31 1974-01-11 Matsushita Electronics Corp
DE2450293A1 (en) * 1974-10-23 1975-11-06 Preh Elektro Feinmechanik DEVICE FOR REMOTE CONTROL OF ELECTRICAL CONSUMABLES

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2187157A5 (en) * 1972-05-31 1974-01-11 Matsushita Electronics Corp
DE2450293A1 (en) * 1974-10-23 1975-11-06 Preh Elektro Feinmechanik DEVICE FOR REMOTE CONTROL OF ELECTRICAL CONSUMABLES

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
EXBK/76 *
NV8087/66 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0203293A1 (en) * 1985-03-29 1986-12-03 Wella Aktiengesellschaft Control circuit for an electric sauna

Also Published As

Publication number Publication date
CH621219A5 (en) 1981-01-15

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Legal Events

Date Code Title Description
ST Notification of lapse