FR673695A - Equipment for radio broadcasting of documents - Google Patents

Equipment for radio broadcasting of documents

Info

Publication number
FR673695A
FR673695A FR673695DA FR673695A FR 673695 A FR673695 A FR 673695A FR 673695D A FR673695D A FR 673695DA FR 673695 A FR673695 A FR 673695A
Authority
FR
France
Prior art keywords
documents
equipment
radio broadcasting
broadcasting
radio
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)
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.)
Societe des Etablissements Edouard Belin SA
Original Assignee
Societe des Etablissements Edouard Belin SA
Filing date
Publication date
Application filed by Societe des Etablissements Edouard Belin SA filed Critical Societe des Etablissements Edouard Belin SA
Application granted granted Critical
Publication of FR673695A publication Critical patent/FR673695A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/44—Secrecy systems
    • H04N1/448—Rendering the image unintelligible, e.g. scrambling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/44—Secrecy systems
    • H04N1/448—Rendering the image unintelligible, e.g. scrambling
    • H04N1/4493—Subsequently rendering the image intelligible using a co-operating image, mask or the like

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimiles In General (AREA)
  • Facsimile Scanning Arrangements (AREA)
FR673695D 1928-08-22 Equipment for radio broadcasting of documents Expired FR673695A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE39651D DE604646C (en) Device for secret image transmission in which the image cylinders are driven with changing speed

Publications (1)

Publication Number Publication Date
FR673695A true FR673695A (en) 1930-01-17

Family

ID=7078675

Family Applications (1)

Application Number Title Priority Date Filing Date
FR673695D Expired FR673695A (en) 1928-08-22 Equipment for radio broadcasting of documents

Country Status (3)

Country Link
DE (1) DE604646C (en)
FR (1) FR673695A (en)
GB (1) GB317787A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0263459A2 (en) * 1986-10-08 1988-04-13 Adger Kogyo Co., Ltd. Pressure sensitive reproducing material
EP0275870A1 (en) * 1987-01-13 1988-07-27 Adger Kogyo Co., Ltd. A pressure sensitive reproducing material

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE948984C (en) * 1938-07-28 1956-09-13 Lorenz C Ag Encryption device for telegraph devices

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0263459A2 (en) * 1986-10-08 1988-04-13 Adger Kogyo Co., Ltd. Pressure sensitive reproducing material
EP0263459A3 (en) * 1986-10-08 1988-07-20 Adger Kogyo Co., Ltd. Pressure sensitive reproducing material
US5070066A (en) * 1986-10-08 1991-12-03 Adger Kogyo Co., Ltd. Pressure sensitive reproducing material
EP0275870A1 (en) * 1987-01-13 1988-07-27 Adger Kogyo Co., Ltd. A pressure sensitive reproducing material

Also Published As

Publication number Publication date
GB317787A (en) 1930-09-04
DE604646C (en) 1934-10-25

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