WO1996018973A1 - Kontaktfreie informationsübertragung von chipkarten - Google Patents
Kontaktfreie informationsübertragung von chipkarten Download PDFInfo
- Publication number
- WO1996018973A1 WO1996018973A1 PCT/DE1995/001679 DE9501679W WO9618973A1 WO 1996018973 A1 WO1996018973 A1 WO 1996018973A1 DE 9501679 W DE9501679 W DE 9501679W WO 9618973 A1 WO9618973 A1 WO 9618973A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- chip card
- information
- contacts
- coil
- circuit
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
- H01Q1/2225—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR 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
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR 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
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07766—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card comprising at least a second communication arrangement in addition to a first non-contact communication arrangement
- G06K19/07769—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card comprising at least a second communication arrangement in addition to a first non-contact communication arrangement the further communication means being a galvanic interface, e.g. hybrid or mixed smart cards having a contact and a non-contact interface
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
- G06K7/10326—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers the antenna being of the very-near field type, e.g. capacitive
Definitions
- the invention relates to a chip card according to the preamble of patent claim 1.
- Chip cards (combination chip cards, hybrid cards) are known from DE 39 35 364, which can exchange energy and data with their end devices (read / write devices) both in a contactless manner and in contact. These cards can be used for multiple applications such as telephone cards, health cards, access control cards.
- the invention has for its object to improve the contactless transmission of information from the card to a card reading station.
- FIG. 1 schematically shows a coil (4) which is connected with its outputs (10) to the electronic circuit (11).
- the outputs (13) of the electronic circuit (11) are connected to contact surfaces (2) in the contact field (1) by a dashed line (12).
- Fig. 2 shows schematically a coil (4) which is connected with its outputs (10) to the electronic circuit (11).
- a capacitor (3) is connected with its outputs via switches (8) either to contacts (7) or (6).
- the switch positions of the switch (8) are determined by the electronics (11), which is symbolized by the dashed lines (9).
- the contacts (6) represent taps on the coil (4).
- the contacts (7) represent contacts to the electronics (11), which according to the patent serve to electrically charge the capacitor (3).
- Claim 1 describes the use of the metal contact surfaces (2) of a conventional chip card as antenna elements for transmitting information. If the contact surfaces (2) are used as capacitors in an open resonant circuit, they emit electrical fields parallel to the plane of their surface. Their use as antenna elements thus also represents their use as electrical capacities. If the contact areas (2) are changed in time by an electronic circuit (11) applied voltages, electromagnetic waves are emitted from the contact surfaces. The shorter the times of the voltage change at the contact surfaces (2), the greater the frequency of the emitted electromagnetic wave. When a square wave voltage pulse is applied, the frequencies of the emitted waves are determined by the rise angle (fall angle) of the pulse, the amplitude by the height of the pulse.
- a wave can thus be sent via the contacts into the surrounding space, which can be detected remotely.
- the emitted wave can have frequencies which are far enough from the frequencies which are transmitted to the coil (4) by conventional methods, such as are described, for example, in the ISO 10536 standard. Mutual influencing of the waves is thus minimized.
- the connection of an electronic circuit (11) with the contacts (2) is described.
- the circuit (11) is located in the chip card and gains energy from the alternating field of the coil (4). Part of this energy is applied by the electronics (11) to one or more of the contacts (2) for the purpose of contactless transmission of information.
- the energy can be obtained from an oscillating circuit and can thus be supplied to the contacts (2) indefinitely. Short-term voltage pulses can also be applied, as described for claim 1.
- a capacitor (3) in the card or in a part of the circuit (11) which serves as an energy store and as a discharge capacitor.
- the capacitor (3) is connected to the contacts of the circuit (11) by means of an electronically controlled switch (8).
- the circuit (11) there can be, for example, a rectifier circuit which obtains a DC voltage from the AC voltages at the coil outputs (4). This DC voltage can be used to charge the capacitor (3) via the contacts (7) become.
- the amount of charge (according to the capacitance of the capacitor) can be increased, which is used for the contactless transmission of information.
- the information can be emitted via the contacts (2) or the coil (4) in an open resonant circuit.
- the coil (4) acts at its outputs (10) like a voltage transformer for multiplying a voltage which is applied to the contacts (6) and changes over time. This multiplied voltage is used to increase the performance of a contactless transmission.
- the circuit (11) connects the capacitor (3) to parts of the coil (4) via the contacts (6).
- the resulting short-circuit current of the capacitor (3) in one part of the coil (4) leads to induced voltages in the other parts of the coil.
- the ratio of the number of turns in the partial coil with its contacts (6) to the number of turns in the coil (4) determines the increase in the voltage at the coil outputs (10).
- the voltage applied by the capacitor (3) to the contacts (6) is present at the outputs (10) of the coil (4).
- the circuit (11) controls the optional connection of the capacitor for recharging via the contacts (7) or for discharging via the contacts (6).
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Artificial Intelligence (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Computer Networks & Wireless Communication (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95938347A EP0796476A1 (de) | 1994-12-11 | 1995-11-23 | Kontaktfreie informationsübertragung von chipkarten |
AU39774/95A AU3977495A (en) | 1994-12-11 | 1995-11-23 | Contactless chip card information transmission |
DE19581412T DE19581412D2 (de) | 1994-12-11 | 1995-11-23 | Kontaktfreie Informationsübertragung von Chipkarten |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4443979.2 | 1994-12-11 | ||
DE4443979A DE4443979C1 (de) | 1994-12-11 | 1994-12-11 | Kontaktfreie Informationsübertragung von Chipkarten |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996018973A1 true WO1996018973A1 (de) | 1996-06-20 |
Family
ID=6535440
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1995/001679 WO1996018973A1 (de) | 1994-12-11 | 1995-11-23 | Kontaktfreie informationsübertragung von chipkarten |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0796476A1 (de) |
AU (1) | AU3977495A (de) |
DE (2) | DE4443979C1 (de) |
WO (1) | WO1996018973A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19723272A1 (de) * | 1996-06-04 | 1997-12-11 | Orga Kartensysteme Gmbh | Chipkarte |
DE19637964A1 (de) * | 1996-09-18 | 1998-03-19 | Diehl Ident Gmbh | Einrichtung zum induktiven hochfrequenten Datenaustausch |
DE19847088A1 (de) * | 1998-10-13 | 2000-05-18 | Ksw Microtec Ges Fuer Angewand | Flächig ausgebildeter Träger für Halbleiter-Chips und Verfahren zu seiner Herstellung |
ES2251315B2 (es) * | 2004-10-14 | 2006-10-01 | Universidad Politecnica De Madrid | Sistema emisor-receptor a baja frecuencia para tarjetas inteligentes sin contacto. |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3935364C1 (de) * | 1989-10-24 | 1990-08-23 | Angewandte Digital Elektronik Gmbh, 2051 Brunstorf, De | |
EP0534559A1 (de) * | 1991-09-24 | 1993-03-31 | N.V. Nederlandsche Apparatenfabriek NEDAP | Chipkarte für die Fernidentifizierung |
-
1994
- 1994-12-11 DE DE4443979A patent/DE4443979C1/de not_active Expired - Fee Related
-
1995
- 1995-11-23 AU AU39774/95A patent/AU3977495A/en not_active Abandoned
- 1995-11-23 WO PCT/DE1995/001679 patent/WO1996018973A1/de not_active Application Discontinuation
- 1995-11-23 DE DE19581412T patent/DE19581412D2/de not_active Expired - Fee Related
- 1995-11-23 EP EP95938347A patent/EP0796476A1/de not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3935364C1 (de) * | 1989-10-24 | 1990-08-23 | Angewandte Digital Elektronik Gmbh, 2051 Brunstorf, De | |
EP0534559A1 (de) * | 1991-09-24 | 1993-03-31 | N.V. Nederlandsche Apparatenfabriek NEDAP | Chipkarte für die Fernidentifizierung |
Also Published As
Publication number | Publication date |
---|---|
AU3977495A (en) | 1996-07-03 |
DE4443979C1 (de) | 1996-03-07 |
EP0796476A1 (de) | 1997-09-24 |
DE19581412D2 (de) | 1998-02-05 |
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