FR1259277A - Method and apparatus for scrambling and unscrambling using a secret grid - Google Patents

Method and apparatus for scrambling and unscrambling using a secret grid

Info

Publication number
FR1259277A
FR1259277A FR829577A FR829577A FR1259277A FR 1259277 A FR1259277 A FR 1259277A FR 829577 A FR829577 A FR 829577A FR 829577 A FR829577 A FR 829577A FR 1259277 A FR1259277 A FR 1259277A
Authority
FR
France
Prior art keywords
unscrambling
scrambling
secret
grid
secret grid
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
FR829577A
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.)
Teleregister Corp
Original Assignee
Teleregister Corp
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 Teleregister Corp filed Critical Teleregister Corp
Priority to FR829577A priority Critical patent/FR1259277A/en
Application granted granted Critical
Publication of FR1259277A publication Critical patent/FR1259277A/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)
FR829577A 1960-06-09 1960-06-09 Method and apparatus for scrambling and unscrambling using a secret grid Expired FR1259277A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR829577A FR1259277A (en) 1960-06-09 1960-06-09 Method and apparatus for scrambling and unscrambling using a secret grid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR829577A FR1259277A (en) 1960-06-09 1960-06-09 Method and apparatus for scrambling and unscrambling using a secret grid

Publications (1)

Publication Number Publication Date
FR1259277A true FR1259277A (en) 1961-04-21

Family

ID=8733117

Family Applications (1)

Application Number Title Priority Date Filing Date
FR829577A Expired FR1259277A (en) 1960-06-09 1960-06-09 Method and apparatus for scrambling and unscrambling using a secret grid

Country Status (1)

Country Link
FR (1) FR1259277A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991018376A1 (en) * 1990-05-22 1991-11-28 Gilles Burstin Processes and products for generating documents with inherent confidentiality
US6220633B1 (en) 1997-11-07 2001-04-24 Documotion Research Inc. Tamper-evident form for securely carrying information
US6481753B2 (en) 1998-10-30 2002-11-19 Documotion Research, Inc. Form for concealing variable printed information

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991018376A1 (en) * 1990-05-22 1991-11-28 Gilles Burstin Processes and products for generating documents with inherent confidentiality
FR2662530A1 (en) * 1990-05-22 1991-11-29 Burstin Gilles METHOD AND PRODUCTS FOR THE GENERATION OF INTRINSICALLY CONFIDENTIALITY DOCUMENTS.
US6220633B1 (en) 1997-11-07 2001-04-24 Documotion Research Inc. Tamper-evident form for securely carrying information
US6231082B1 (en) 1997-11-07 2001-05-15 Documotion Research, Inc. Tamper-evident form for securely carrying information
US6481753B2 (en) 1998-10-30 2002-11-19 Documotion Research, Inc. Form for concealing variable printed information

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