CH475599A - Circuit arrangement for identifying information present as a time-variable electrical analog signal - Google Patents

Circuit arrangement for identifying information present as a time-variable electrical analog signal

Info

Publication number
CH475599A
CH475599A CH851067A CH851067A CH475599A CH 475599 A CH475599 A CH 475599A CH 851067 A CH851067 A CH 851067A CH 851067 A CH851067 A CH 851067A CH 475599 A CH475599 A CH 475599A
Authority
CH
Switzerland
Prior art keywords
time
analog signal
circuit arrangement
identifying information
information present
Prior art date
Application number
CH851067A
Other languages
German (de)
Inventor
Herrli Peter
Original Assignee
Sodeco Compteurs De Geneve
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 Sodeco Compteurs De Geneve filed Critical Sodeco Compteurs De Geneve
Priority to CH851067A priority Critical patent/CH475599A/en
Priority to AT490068A priority patent/AT275201B/en
Priority to DE19681774344 priority patent/DE1774344C3/en
Priority to FR1580269D priority patent/FR1580269A/fr
Priority to GB28752/68A priority patent/GB1235384A/en
Publication of CH475599A publication Critical patent/CH475599A/en

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
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/073—Special arrangements for circuits, e.g. for protecting identification code in memory

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Computer Security & Cryptography (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Manipulation Of Pulses (AREA)
  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
CH851067A 1967-06-15 1967-06-15 Circuit arrangement for identifying information present as a time-variable electrical analog signal CH475599A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CH851067A CH475599A (en) 1967-06-15 1967-06-15 Circuit arrangement for identifying information present as a time-variable electrical analog signal
AT490068A AT275201B (en) 1967-06-15 1968-05-21 Circuit arrangement for identifying or checking the authenticity of information present as a time-variable electrical analog signal
DE19681774344 DE1774344C3 (en) 1967-06-15 1968-05-29 Circuit arrangement for checking the authenticity of a security
FR1580269D FR1580269A (en) 1967-06-15 1968-06-10
GB28752/68A GB1235384A (en) 1967-06-15 1968-06-17 Circuit for identifying or checking the authenticity of data in the form of a time variable analogue electric signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH851067A CH475599A (en) 1967-06-15 1967-06-15 Circuit arrangement for identifying information present as a time-variable electrical analog signal

Publications (1)

Publication Number Publication Date
CH475599A true CH475599A (en) 1969-07-15

Family

ID=4341365

Family Applications (1)

Application Number Title Priority Date Filing Date
CH851067A CH475599A (en) 1967-06-15 1967-06-15 Circuit arrangement for identifying information present as a time-variable electrical analog signal

Country Status (4)

Country Link
AT (1) AT275201B (en)
CH (1) CH475599A (en)
FR (1) FR1580269A (en)
GB (1) GB1235384A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4297836B2 (en) * 2003-09-10 2009-07-15 三洋電機株式会社 Consumable parts and identification device thereof

Also Published As

Publication number Publication date
AT275201B (en) 1969-10-10
DE1774344A1 (en) 1971-06-24
FR1580269A (en) 1969-09-05
DE1774344B2 (en) 1975-05-22
GB1235384A (en) 1971-06-16

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Legal Events

Date Code Title Description
PL Patent ceased