BE836699A - ACOUSTIC FREQUENCY MODULE LIGHT EMITTER IN A COMMUNICATION DEVICE - Google Patents

ACOUSTIC FREQUENCY MODULE LIGHT EMITTER IN A COMMUNICATION DEVICE

Info

Publication number
BE836699A
BE836699A BE162794A BE162794A BE836699A BE 836699 A BE836699 A BE 836699A BE 162794 A BE162794 A BE 162794A BE 162794 A BE162794 A BE 162794A BE 836699 A BE836699 A BE 836699A
Authority
BE
Belgium
Prior art keywords
communication device
light emitter
frequency module
acoustic frequency
module light
Prior art date
Application number
BE162794A
Other languages
French (fr)
Inventor
J Bulow
B Schmitt
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 filed Critical
Publication of BE836699A publication Critical patent/BE836699A/en

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
    • H04B10/50—Transmitters
    • 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
    • H04B1/06—Receivers
    • H04B1/08—Constructional details, e.g. cabinet

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optical Communication System (AREA)
  • Circuits Of Receivers In General (AREA)
BE162794A 1975-08-30 1975-12-16 ACOUSTIC FREQUENCY MODULE LIGHT EMITTER IN A COMMUNICATION DEVICE BE836699A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19757527487 DE7527487U (en) 1975-08-30 1975-08-30 SOUND MODULATED LIGHT TRANSMITTER IN MESSAGE DEVICES

Publications (1)

Publication Number Publication Date
BE836699A true BE836699A (en) 1976-04-16

Family

ID=6655107

Family Applications (1)

Application Number Title Priority Date Filing Date
BE162794A BE836699A (en) 1975-08-30 1975-12-16 ACOUSTIC FREQUENCY MODULE LIGHT EMITTER IN A COMMUNICATION DEVICE

Country Status (8)

Country Link
BE (1) BE836699A (en)
CH (1) CH590593A5 (en)
DE (1) DE7527487U (en)
DK (1) DK976A (en)
FR (1) FR2322488A1 (en)
GB (1) GB1503265A (en)
IT (1) IT219822Z2 (en)
NL (1) NL7600375A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1150715B (en) * 1982-03-19 1986-12-17 Marco Clementi HI=FI car radio with automatic tuner
GB2232290B (en) * 1989-04-11 1994-02-23 Barcrest Ltd Relay system

Also Published As

Publication number Publication date
FR2322488A1 (en) 1977-03-25
DE7527487U (en) 1976-01-02
FR2322488B3 (en) 1979-03-09
DK976A (en) 1977-03-01
GB1503265A (en) 1978-03-08
NL7600375A (en) 1977-03-02
CH590593A5 (en) 1977-08-15
IT219822Z2 (en) 1993-05-18

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