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1. WO1997023848 - METHOD FOR DETECTING AN ELECTROCONDUCTIVE ELEMENT IN A DOCUMENT

Publication Number WO/1997/023848
Publication Date 03.07.1997
International Application No. PCT/EP1996/005767
International Filing Date 20.12.1996
IPC
G01V 3/08 2006.01
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
3Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation
08operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
G01V 3/11 2006.01
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
3Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation
08operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
10using induction coils
11for detecting conductive objects, e.g. firearms, cables or pipes
G06K 19/10 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
19Record carriers for use with machines and with at least a part designed to carry digital markings
06characterised by the kind of the digital marking, e.g. shape, nature, code
08using markings of different kinds in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
10at least one kind of marking being used for authentication, e.g. of credit or identity cards
G07D 7/00 2016.01
GPHYSICS
07CHECKING-DEVICES
DHANDLING OF COINS OR OF VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
7Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
CPC
G01V 3/088
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
3Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
08operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
088operating with electric fields
Applicants
  • GIESECKE & DEVRIENT GMBH [DE]/[DE] (AllExceptUS)
  • GERZ, Christoph [DE]/[DE] (UsOnly)
Inventors
  • GERZ, Christoph
Agents
  • KLUNKER, SCHMITT-NILSON, HIRSCH
Priority Data
195 48 532.722.12.1995DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN ZUR DETEKTION EINES ELEKTRISCH LEITFÄHIGEN ELEMENTS IN EINEM DOKUMENT
(EN) METHOD FOR DETECTING AN ELECTROCONDUCTIVE ELEMENT IN A DOCUMENT
(FR) PROCEDE DE DETECTION D'UN ELEMENT ELECTROCONDUCTEUR DANS UN DOCUMENT
Abstract
(DE)
Die Erfindung betrifft ein Verfahren zur Detektierung eines elektrisch leitfähigen Elements in einem Dokument, wobei ein Signal mit einer modulierten Trägerfrequenz an wenigstens eine Sendeelektrode angekoppelt wird. Dieses Signal wird über das elektrisch leitfähige Element zu wenigstens einer Empfangselektrode übertragen, wobei das empfangene Modulationssignal zur Erkennung des elektrisch leitfähigen Elements ausgewertet wird. Das elektrisch leitfähige Element in dem Dokument stellt hierbei ein kapazitives Koppelelement zwischen der Sende- und Empfangselektrode dar.
(EN)
The invention relates to a method for detecting an electroconductive element in a document. During said method a signal with a modulated carrier frequency is fed into at least one transmission electrode. Said signal is transmitted via the electroconductive element to at least one receiver electrode, the received modulation signal being evaluated to detect the electroconductive element. The electroconductive element in the document is a capacitive coupling element between the transmission electrode and the reception electrode.
(FR)
L'invention concerne un procédé de détection d'un élément électroconducteur dans un document, selon lequel un signal est couplé avec une fréquence porteuse modulée est injecté dans au moins une électrode d'émission. Ce signal est transmis par l'intermédiaire de l'élément électroconducteur à au moins une électrode de réception, le signal de modulation reçu étant évalué pour permettre la détection de l'élément électroconducteur. L'élément électroconducteur situé dans le document constitue un élément de couplage capacitif entre l'électrode d'émission et l'électrode de réception.
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