EP0718805A2 - Systèmes protégés à accès à distance - Google Patents

Systèmes protégés à accès à distance Download PDF

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Publication number
EP0718805A2
EP0718805A2 EP95101162A EP95101162A EP0718805A2 EP 0718805 A2 EP0718805 A2 EP 0718805A2 EP 95101162 A EP95101162 A EP 95101162A EP 95101162 A EP95101162 A EP 95101162A EP 0718805 A2 EP0718805 A2 EP 0718805A2
Authority
EP
European Patent Office
Prior art keywords
information
secure
signals
chip device
receive
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.)
Withdrawn
Application number
EP95101162A
Other languages
German (de)
English (en)
Inventor
Carmi Bogat
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.)
News Datacom Ltd
Original Assignee
News Datacom Ltd
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 News Datacom Ltd filed Critical News Datacom Ltd
Publication of EP0718805A2 publication Critical patent/EP0718805A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/20—Individual registration on entry or exit involving the use of a pass
    • G07C9/28—Individual registration on entry or exit involving the use of a pass the pass enabling tracking or indicating presence

Definitions

  • the present invention relates generally to secure remote access systems.
  • radio frequency (RF) tags which provide object identification and access to restricted areas and services without physical contact between the tag and an object.
  • U.S. Patent 5,058,161 describes a method and apparatus for performing identification and/or verification at predetermined checkpoints.
  • U.S. Patent 5,204,675 describes a system for collecting a toll for a vehicle, on which a vehicle number plate is mounted.
  • the present invention seeks to provide secure remote access systems in which access to restricted areas is provided by RF signals.
  • Such a secure remote access system may include an access card with a secure chip and RF communication modules. Data is communicated between the access card and remote stations. Tampering with the access card is difficult because a secure chip is employed.
  • a secure remote access system including a transmitter for transmitting RF signals which include information, and a secure access card, wherein the secure access card includes a receive and transmit antenna receiving the RF signals and a secure chip device for extracting the information from the RF signals, for processing the information and for converting the processed information into a format suitable for transmission via the receive and transmit antenna, whereby the receive and transmit antenna is operable to transmit the processed information to a remote site.
  • the secure remote access system includes a compressor for compressing the information prior to transmitting thereof.
  • the secure access card also includes a decompressor for decompressing compressed information and a compressor for compressing information prior to transmitting the information to a remote site.
  • a decompressor for decompressing compressed information
  • a compressor for compressing information prior to transmitting the information to a remote site.
  • the information is transmitted in a HDLC communication format.
  • the secure chip device may be an EEPROM chip device.
  • FIG. 1 is a generalized illustration of an access card forming part of a secure remote access system constructed and operative in accordance with a preferred embodiment of the present invention.
  • FIG. 1 is a generalized illustration of an access card forming part of a secure remote access system constructed and operative in accordance with a preferred embodiment of the present invention.
  • An access card generally denoted by reference numeral 10, includes a reception/transmission antenna 12, a secure chip 14, a battery compartment 16 including batteries 18, and input/output interface connectors 20.
  • Reception/transmission antenna 12 receives and transmits RF signals. It is to be appreciated that antenna 12 may be a set of two separate antennas, one for reception and one for transmission.
  • Access card 10 receives RF signals from a remote transmitter 21.
  • the RF signals include data for at least one of identification, verification and validation of the card owner or a combination thereof.
  • identification, verification and validation may be carried out in accordance with any suitable algorithm, such as those described in either of U.S. Patents 4,748,668 and 4,932,056.
  • the RF signals also may include monetary data which is employed to credit or debit the card owner with value tokens.
  • RF signals received at antenna 12 are provided to a bi-phase modulator 22 and an amplitude detector 23, both embedded in the secure chip 14.
  • Bi-phase modulator 22 is employed to modulate the incoming signal and to re-transmit a portion of the incident radiation in a modulated manner.
  • the re-transmitted signal is modulated with response data generated in the secure chip.
  • Bi-phase modulator 22 and amplitude detector 23 are coupled to a high frequency input/output interface 24 which is operable to detect data signals contained in the RF signals, reformat the data signals in a format which is suitable for processing by a processor and provide the reformatted data signals to a processor 26.
  • Processor 26 is coupled to a memory 28 for storing and retrieving of data.
  • transmitter 21 includes a data compressor 23 and high frequency input/output interface 24 includes a data compressor/decompressor 25 which decompresses the information transmitted in compressed form and provides it to processor 26.
  • Processor 26 is operable to control the operation of the card, to provide responses to interrogation by a remote station, to generate messages and to control monetary transactions.
  • Responses to interrogation generated by processor 26 may contain identification codes, verification data, authentication data, general data and any combination thereof.
  • processor 26 is operable to run secure algorithms for identification, verification and authentication. The algorithms may be stored in memory 28 or provided to processor 26 over-the-air or from an external unit, such as a computer (not shown), via input/output interface connectors 20.
  • monetary data processed by processor 26 may include transactions of value tokens and calculations of debits and credits.
  • part of the data received at the card may contain credits or value tokens.
  • Debits for operations in which payment is demanded are deducted by a debit signal, which is received and processed at the card when the card is accessed.
  • Data generated by processor 26 is provided to high frequency input/output interface 24 which converts the data to signals which are modulated in bi-phase modulator 22 with a portion of the incident radiation and transmitted, over-the-air, to a remote station (not shown). It is to be appreciated that bi-phase modulator 22, amplitude detector 23, high frequency input/output interface 24, processor 26 and memory 28 are all embedded in a secure chip of which tapping is difficult.
  • compressor/decompressor 25 integrated in high frequency input/output interface 24, compresses the data prior to transmission to the remote station.
  • Batteries 18 may be employed to provide electrical power for backup. It is to be appreciated that in most applications the incident radiation provides enough power for transmission of the response signals. Batteries 18 are coupled to the secure chip 14 by connectors 19 in the battery compartment 16.
  • the secure chip 14 may be an Electronically Erasable Programmable Read Only Memory (EEPROM) in which data may be written on or read from. In such a device, data is stored even when the card 10 is not electrically powered. It is to be appreciated that the direct coupling of the secure chip to RF transmitting and receiving modules may result in fast communication protocols such a HDLC communication protocol or any other packet based communication protocol.
  • EEPROM Electronically Erasable Programmable Read Only Memory
  • the system of Fig. 1 may be employed in various applications, all of which employ transfer of information to and from the access card.
  • Such applications may include a toll road application, a pass entitlement application and an entrance to restricted area application.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Near-Field Transmission Systems (AREA)
EP95101162A 1994-12-25 1995-01-27 Systèmes protégés à accès à distance Withdrawn EP0718805A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL11213994A IL112139A (en) 1994-12-25 1994-12-25 Secure remote access systems
IL11213994 1994-12-25

Publications (1)

Publication Number Publication Date
EP0718805A2 true EP0718805A2 (fr) 1996-06-26

Family

ID=11066926

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95101162A Withdrawn EP0718805A2 (fr) 1994-12-25 1995-01-27 Systèmes protégés à accès à distance

Country Status (2)

Country Link
EP (1) EP0718805A2 (fr)
IL (1) IL112139A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998014915A2 (fr) * 1996-10-01 1998-04-09 Omega Digital Data Inc. Procede pour assembler et programmer un dispositif securise d'entree de numero d'identification personnelle
WO1998014917A2 (fr) * 1996-10-01 1998-04-09 Omega Digital Data Inc. Terminal de transaction financiere et composants a cet effet

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998014915A2 (fr) * 1996-10-01 1998-04-09 Omega Digital Data Inc. Procede pour assembler et programmer un dispositif securise d'entree de numero d'identification personnelle
WO1998014917A2 (fr) * 1996-10-01 1998-04-09 Omega Digital Data Inc. Terminal de transaction financiere et composants a cet effet
WO1998014915A3 (fr) * 1996-10-01 1998-06-04 Omega Digital Data Inc Procede pour assembler et programmer un dispositif securise d'entree de numero d'identification personnelle
WO1998014917A3 (fr) * 1996-10-01 1998-07-16 Omega Digital Data Inc Terminal de transaction financiere et composants a cet effet

Also Published As

Publication number Publication date
IL112139A0 (en) 1995-03-15
IL112139A (en) 1999-11-30

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