DK109616C - Fremgangsmåde til kryptografisk indføring af grafisk information på registreringsark og til at gøre den synlig igen. - Google Patents

Fremgangsmåde til kryptografisk indføring af grafisk information på registreringsark og til at gøre den synlig igen.

Info

Publication number
DK109616C
DK109616C DK456162AA DK456162A DK109616C DK 109616 C DK109616 C DK 109616C DK 456162A A DK456162A A DK 456162AA DK 456162 A DK456162 A DK 456162A DK 109616 C DK109616 C DK 109616C
Authority
DK
Denmark
Prior art keywords
procedure
making
graphical information
visible again
registration sheets
Prior art date
Application number
DK456162AA
Other languages
English (en)
Original Assignee
Ncr Co
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 Ncr Co filed Critical Ncr Co
Application granted granted Critical
Publication of DK109616C publication Critical patent/DK109616C/da

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09C—CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
    • G09C5/00—Ciphering apparatus or methods not provided for in the preceding groups, e.g. involving the concealment or deformation of graphic data such as designs, written or printed messages

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
DK456162AA 1961-10-24 1962-10-23 Fremgangsmåde til kryptografisk indføring af grafisk information på registreringsark og til at gøre den synlig igen. DK109616C (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US147360A US3279095A (en) 1961-10-24 1961-10-24 Information encoding and decoding method

Publications (1)

Publication Number Publication Date
DK109616C true DK109616C (da) 1968-05-20

Family

ID=22521256

Family Applications (1)

Application Number Title Priority Date Filing Date
DK456162AA DK109616C (da) 1961-10-24 1962-10-23 Fremgangsmåde til kryptografisk indføring af grafisk information på registreringsark og til at gøre den synlig igen.

Country Status (5)

Country Link
US (1) US3279095A (da)
AT (1) AT241163B (da)
CH (1) CH397288A (da)
DK (1) DK109616C (da)
GB (1) GB940498A (da)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4682954A (en) * 1960-10-24 1987-07-28 Cook Richard C Cryptographic process and enciphered product
US3390989A (en) * 1964-04-15 1968-07-02 Itek Corp Methods of imaging a data storage medium
US3675948A (en) * 1969-09-10 1972-07-11 American Bank Note Co Printing method and article for hiding halftone images
US3827726A (en) * 1972-05-02 1974-08-06 Polaroid Corp Identification cards
SE379107B (da) * 1972-06-16 1975-09-22 A W Jemseby
US3969830A (en) * 1972-12-01 1976-07-20 Grasham James A Color encoding-decoding method
US3914877A (en) * 1974-04-08 1975-10-28 Marion E Hines Image scrambling technique
GB2172850A (en) * 1985-03-01 1986-10-01 Kenrick & Jefferson Ltd Security documents
EP0260815A1 (en) * 1986-08-18 1988-03-23 Spectron Print Pty. Limited Secure encoding method and associated products
US4912761A (en) * 1988-03-31 1990-03-27 Jerry R. Iggulden Security facsimile systems
US4916739A (en) * 1988-03-31 1990-04-10 Jerry R. Iggulden Adhesive photocopyable transparency for use in a secure facsimile transmission system
WO1990010349A1 (en) * 1989-02-21 1990-09-07 Tan Jeanette C Security facsimile transmission system
US5241166A (en) * 1990-07-02 1993-08-31 Chandler Donald G Low resolution target acquisition
US5583950A (en) * 1992-09-16 1996-12-10 Mikos, Ltd. Method and apparatus for flash correlation
GB2282563A (en) * 1993-10-07 1995-04-12 Central Research Lab Ltd A composite image arrangement for documents of value
US5488664A (en) * 1994-04-22 1996-01-30 Yeda Research And Development Co., Ltd. Method and apparatus for protecting visual information with printed cryptographic watermarks
US7170499B1 (en) 1999-05-25 2007-01-30 Silverbrook Research Pty Ltd Handwritten text capture via interface surface
MXPA03011289A (es) * 2001-06-05 2004-10-28 Confoti Inc Confeti con imagenes fotograficas en su superficie.
AU2003229014A1 (en) * 2002-05-10 2003-11-11 Confoti, Inc. Apparatus for interactive specification of manufactured products
WO2005009026A1 (en) * 2003-07-21 2005-01-27 Koninklijke Philips Electronics N.V. Image alignment
US9033245B2 (en) * 2009-09-17 2015-05-19 Tento Technologies Ltd. Device and method for obfuscating visual information

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2417163A (en) * 1944-02-28 1947-03-11 Talimon E Horst Coding and decoding apparatus
US2377292A (en) * 1944-09-06 1945-05-29 Paul H Donaldson Photographic process
US2405972A (en) * 1945-01-13 1946-08-20 Arthur C Mccrum Method of producing prescription blanks
US2624958A (en) * 1951-09-06 1953-01-13 Fine Harry Cryptogrammic device
NL226920A (da) * 1957-04-23
US2995443A (en) * 1957-08-08 1961-08-08 Metalphoto Corp Aluminum plate with plural images and method of making same
US2952080A (en) * 1957-09-12 1960-09-13 Teleregister Corp Cryptic grid scrambling and unscrambling method and apparatus

Also Published As

Publication number Publication date
US3279095A (en) 1966-10-18
GB940498A (en) 1963-10-30
CH397288A (fr) 1965-08-15
AT241163B (de) 1965-07-12

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