FR678190A - Electro-optical photomicrophone - Google Patents

Electro-optical photomicrophone

Info

Publication number
FR678190A
FR678190A FR678190DA FR678190A FR 678190 A FR678190 A FR 678190A FR 678190D A FR678190D A FR 678190DA FR 678190 A FR678190 A FR 678190A
Authority
FR
France
Prior art keywords
photomicrophone
electro
optical
optical photomicrophone
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.)
Expired
Application number
Other languages
French (fr)
Inventor
Ernest Kassner
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.)
ELEKTROPHYSIKALISCHE GmbH
Original Assignee
ELEKTROPHYSIKALISCHE GmbH
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 ELEKTROPHYSIKALISCHE GmbH filed Critical ELEKTROPHYSIKALISCHE GmbH
Application granted granted Critical
Publication of FR678190A publication Critical patent/FR678190A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
FR678190D 1929-04-19 1929-06-29 Electro-optical photomicrophone Expired FR678190A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE340964X 1929-04-19

Publications (1)

Publication Number Publication Date
FR678190A true FR678190A (en) 1930-03-19

Family

ID=6230675

Family Applications (1)

Application Number Title Priority Date Filing Date
FR678190D Expired FR678190A (en) 1929-04-19 1929-06-29 Electro-optical photomicrophone

Country Status (3)

Country Link
BE (1) BE362363A (en)
FR (1) FR678190A (en)
GB (1) GB340964A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE887208C (en) * 1938-01-08 1953-08-20 Telefunken Gmbh Image scanning tubes with a screen made of a substance which changes its resistance and / or its dielectric constant when exposed to light

Also Published As

Publication number Publication date
BE362363A (en)
GB340964A (en) 1931-01-01

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