Registers – Records – Conductive
Patent
1998-01-30
2000-08-08
Hajec, Donald
Registers
Records
Conductive
235449, 235493, 34082531, G06K 1906
Patent
active
060988908
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL AREA
The invention relates to a process for adapting chip cards to different card terminals that exchange energy and data with the chip cards by means of electromagnetic waves, whereby the chip cards comprise an electronic circuit, contactless connection means such as coils, capacitors, photosensitive layers or oscillating circuits, all of which are electrically connected to each other, and the invention also relates to a device according to the generic parts of claims 1 and 5.
STATE OF THE ART
Cards used nowadays can obtain the energy needed for their operation from the electromagnetic field surrounding them in the vicinity of a terminal. They can also function independently of the surrounding electromagnetic field in that the card is supplied by an embedded source of electric energy such as a battery or capacitor, or by a portable device into which the card is inserted. Such cards are used for numerous applications such as, for example, telephone cards, medical cards or access control cards. An overview of such cards and their applications is compiled in three editions of the publication "Elektronik" from the year 1993.
A chip card is known from DE 39 35 364 C1 which contains contacts and contact-free transmission elements. DE 43 27 334 C1 describes a contactless chip card having two transmission coils or capacitor plates which autonomously recognizes whether it is operating in close proximity to a terminal, for which purpose a "stereo effect" is utilized. With this effect, on the one hand, it is only possible to change certain data on the card when the card is inserted into a read/write device and, on the other hand, this access is prohibited when the card is addressed remotely.
In the case of processes that utilize the evaluation of transmitted logical information, such as commands, protocols and encoding, and that start the programs in cards externally via fed-in information, it is possible to feed extensive information into the card before the card can block itself The entering of undesired programs or program fragments such as program viruses into chip cards with the aim of having the cards carry out functions such as, for example, transferring funds to anonymous bank accounts, will pose a risk in the future, especially with chip cards that operate contact-free. Such processes are not adequately secured against undesired data transmissions between the card and the terminal. The known chip cards are not yet sufficiently secure against external manipulation.
GB-A 2,237,479 described a contactless IC card comprising a microprocessor, storage device as well as an antenna for bi-directional data transmission. The chip card is capable of evaluating the physical properties of received electromagnetic waves on the basis of the amplitudes, whereby the amplitude of the waves differs from one card terminal to the next. Depending on this evaluation, different function components with special functions are activated, whereby however, the card function remains the same in all cases.
EP-A 0,159,539 has described a chip card system which serves as a money substitute, as an identification or as a storage medium, in which one single chip card can be used consecutively for different application cases. Different areas of a storage device integrated in the chip or of a functional unit are provided for the various application cases. In order to select the different areas in the chip, there is a selection circuit in the chip for which a certain selection procedure is defined by means of which it can be ensured that the areas relevant for the application case in question and only these are allocated. This is done on the basis of the information conveyed by an input/output device which is modulated upon a carrier wave. Thus, through the different information transferred, different card functions can be activated for different application cases.
TECHNICAL OBJECTIVE
The invention is based on the objective of creating a process and a device such that one and the same chip card can interact with different card
REFERENCES:
patent: 4822900 (1989-04-01), Tamada et al.
patent: 4822988 (1989-04-01), Gloton
patent: 5049728 (1991-09-01), Rovin
patent: 5206495 (1993-04-01), Kreft
patent: 5444222 (1995-08-01), Inoue
patent: 5585617 (1996-12-01), Ohbuchi et al.
patent: 6011483 (2000-01-01), Tanaka
Bade Ingo
Jenning Michael
Kreft Hans-Diedrich
Wesenberg Jurgen
Angewandte Digital Elektronik GmbH
Cyr Daniel St.
Hajec Donald
Kasper Horst M.
LandOfFree
Method and device for adapting a chip card to different card ter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and device for adapting a chip card to different card ter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for adapting a chip card to different card ter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1142214