The invention relates to a card reader for communicating with portable
Data carriers, in particular a portable card reader
for reading out data from smart cards specified in ISO 7816
Card readers are used to access regardless of access
to fixed readers, opening hours and
the like at any time and any place data from a portable
Disk, z. B. a smart card to read,
for example, still on a cash card existing amounts, on
points stored on a bonus card, one-time passwords ("one-time
passwords ", OTP) and the like
by means of such a card reader allows, at any time
to retrieve the data stored on the smart cards used by him
and check. The vast majority
in daily use used chip cards, for example
Money cards, health cards and the like, has a standardized format
according to ISO standard 7816 and an integrated circuit. The cards
are with six or eight contact areas for contact
Communication equipped with a card reader. But also smart cards
with an integrated antenna for contactless communication with
A card reader is known as well as cards, both of which are communication interface types
support (dual-interface cards).
The prior art known card readers are usually too bulky
trained to work together with chip cards, for example in a wallet,
to be kept, and / or are built and / or dispose of
Components that are subject to a claim of such permanent storage,
z. B. pressure and bending loads, not withstand. This has to
Result that the card readers of the user due to the lack of possibility
for storage together with the chip cards to be read only temporarily
be carried along and if so separated from the ones to be read
Chip cards. An intended use in
The concrete situation is made difficult or even prevented.
A card reader of the type described above is for example in the DE 28 52 941 C2
disclosed. It is tabular, comprises on its underside a slot for receiving a bank card and has approximately ten times the thickness of such a card to be read. The WO 03/107254 A1
discloses a card reader with a card-shaped housing having a base plate and a cover plate, between which a slot-like insertion channel for receiving smart cards is formed. At the opposite end of the slot of the card reader is provided with a connector connector strip.
on the other hand
have mobile phones, which are basically for reading
could be used by smart cards and the user
usually always available, only in special
Cases via suitable interfaces to chip cards,
For example, mobile phones with an NFC module ("near
field communication device ") for reading out contactless chip cards
As a result,
is the object of the present invention, one for the
Users practicable and thus always available
Card reader for reading out portable data carriers, in particular chip cards
in accordance with ISO standard 7816
Task is performed by a card reader with the characteristics of the independent
Claim solved. In dependent claims
Advantageous embodiments and developments are given.
The present invention is based on the idea of the card reader itself
as a card-shaped electronic data carrier,
especially as a smart card, form. Accordingly, includes
the thus constructed card reader according to the invention
a data communication interface, a reading device for
Reading data from a storage of a portable data carrier via
the data communication interface and an output device
to output the data. The card reader according to the invention
has all the practical features of a portable data carrier,
such as As its handy and small format and its robustness. On
this way the card reader is just as ordinary
portable data carriers, in particular smart cards, and together
with these, for example, in a wallet to keep
and thus always ready for use.
Data communication interface of the card reader can be set up
be a contact-based communication link with a portable
Make media. In this case, the data communication interface comprises
a physical interface, such as a contact pad
with sliding contacts or sprung balls for contact
with the contact surfaces of the portable data carrier.
Furthermore, the data communication interface comprises a control unit
for driving this interface, generally designed as
a driver, the z. B. an operating system that is in an integrated
Circuit of the card reader is present, listened to.
The reading device is set up, data via the data communication interface from ei read out the memory of the portable data carrier. In this case, the reading device can be designed, for example, as an application which initiates and controls a readout of the portable data carrier via the control unit via a suitable communication protocol. The reading device can also be part of the operating system of the card reader or designed as a system routine or application.
is a data communication interface and a reading device
for contactless communication with a portable data carrier
in the context of the invention, by means of which data by inductive or
capacitive coupling can be read out. The data communication interface comprises
in this case as an physical interface an antenna. The
Control unit and the reading device are analogous to the contact-type
Case trained. Does the portable data carrier have a
Magnetic strip as memory, so the data communication interface
also include a magnetic head as a physical interface.
Card reader may include other data communication interfaces,
both contact-based and contactless communication.
In this case, a further data communication interface is set up,
simultaneously to an existing communication connection of the card reader via
the first data communication interface with a portable data carrier
another communication connection with another portable data carrier
manufacture. In this way is thus a simultaneous access
the card reader on multiple portable media possible.
Card reader may additionally include a writing device,
which is set up data via a data communication interface
of the card reader in a portable disk.
This allows the card reader even simple transactions on one
perform portable media, such as
Payment transactions, since after the payment transaction the
new account balance can be enrolled in the disk.
In conjunction with another data communication interface
This will allow the card reader to read at the same time
and write to communicate with multiple portable media
can: reading with the reading device to read out data
a memory of a data carrier via a data communication interface
and writing with the writing device for introducing data
into a memory of another volume
another data communication interface, for example for
Transferring a sum of money from one cash card to another.
A preferred embodiment is the card reader itself
can be used as a standalone portable data carrier.
So he has all the characteristics
an ordinary portable disk. Especially
he is set up as a portable volume over
a data communication interface read by another card reader
to become. This makes the card reader even more diverse
Usable and the number of user always to be carried
Media can be reduced.
the card reader includes a memory for storing data,
wherein in particular the reading device is set up, from a portable
Disk read data in the memory to write.
This allows, for example, machining operations
recorded on a portable volume, cached
and retrieved later. By means of the memory
it will continue to allow data from a portable
Disk using the card reader on another
to transfer portable media, even if
the data carrier via a writing device,
but not via another data communication interface
has by removing from the one portable disk
read data is cached in the memory before this
in the other disk by means of the writing device
The card reader includes a control device that is part of a
Operating system of the card reader may be formed. The control device
is in particular set up, a read access of an external
Device, in particular another card reader, on data
to allow in the store. requirement for
such a read access is of course a readable set up
The data communication interface is usually arranged on the card reader so that a read-out of the portable data carrier can take place after a stacking of data carrier and card reader. In the case of the contact-type communication between the card reader and the data carrier, a contact field of the card reader and contact areas of the data carrier come to lie one above the other in this way and a contact contact between the two is established. Thus, it is also possible to convert a set up for contact-type communication portable media for contactless communication. For this purpose, the card reader, which is placed on the disk, set up a corresponding protocol conversion of a protocol for contact data communication between the portable data carrier and the card reader in a Kontaktlosprotokoll for communication of the card reader - instead of the portable data carrier - with a contactless communicating another Card reader in front of you. In addition, the card reader has an antenna for carrying out the corresponding communication.
a trouble-free data transfer between card readers
and portable media support, in particular
in the case of contact communication, is the card reader
preferably with a support securing device for securing
the card reader against slipping while resting on the disk
Mistake. Wiggle contacts are thus avoided and a contact
the desired, correct contact surfaces of the data carrier
is relieved. This support device can, for example
in the form of rubber dots on when laying the card reader on
the disk facing the portable disk
Side of the card reader be formed or the corresponding surface
the card reader is partially covered with an adhesive layer,
is therefore siliconized, for example. Also a fold-out clamping device
for clamping the data carrier is within the scope of the invention.
The support device can be supplemented and / or replaced
be through facilities that have a correct orientation of the card reader
support for portable media,
For example, folding guide elements or optical
Aids, z. B. by the card reader partially transparent
is and applied to its surface geometric shapes
are to be aligned with a disk to be read
with appropriate shapes on the disk surface
can be brought to cover.
the card reader has a personalization device for assigning
the card reader for a given user or a predetermined
User group. So the disk can usually be in one
the usage phase preceded by user-specific data,
in particular by introducing data into a memory of the card reader
or by equipping the card reader with a smart chip or
an RFID module. So it becomes possible, the readout capabilities
to limit a card reader user-specific, ie
z. B. the access of a card reader on disk other
Prohibit users or only authorized personnel, for example
Authorities or police, access to certain portable
Data carriers, such as identity cards to allow.
Card reader can have the same outline as that of this
readable portable media, so for example
the outline of a chip card according to ISO standard 7816.
Thereby, the above-described stacking becomes read out
facilitated by data. However, it is also possible that
the card reader has a different outline, preferably one
smaller, but in some cases larger
or a completely different design. The succession
from card reader and portable media can z. B. then always
still be performed defined, if in each case two edges
of card reader and disk are the same.
The card reader can be a thickness according to ISO standard
7816 or be slightly thicker. To this
Way can provide additional stability at the same time
even more user-friendly manageability can be gained as well as room for
be created in addition to integrating features.
Output device of the card reader for outputting the read out
Data or other data, such. As error messages, is preferably
designed as a display device, which in different versions
and sizes and at different positions
the surface of the card reader can be present. In particular, can
the display device be designed as a display. alternative
and / or additionally, the output may also be, for example
acoustically via a loudspeaker. additionally
can more output or display devices, eg. B.
LED, OLED or the like, be provided, the status information
represent, for example, the quality of a portable
Data carrier established communication link.
the card reader has its own power supply,
So z. B. via a battery or a rechargeable battery. It is
the battery preferably interchangeable. Charging the battery can
be provided contactless or contact-related. Charge state of
Battery or accumulator can likewise over a
the other display devices or the main display device
Card body of the card reader can by injection molding or
by lamination, so connecting different films formed
As is the case with the production of portable data carriers
Preferably, the card reader is formed with an input device for inputting data into an integrated circuit of the card reader. Also commands for operating the card reader can be passed to the card reader by means of the input device. In this way, the usability of the card reader can be facilitated and greatly expanded its capabilities. For example, a keyboard or a touch panel can be provided as an input device, and buttons, setting wheels or the like can also be used for inputting. Acoustic data can be input by means of a microphone be optical data by means of a photodiode, a light-sensitive line or a camera.
Wireless interface devices
can empower the card reader with external
Devices wirelessly, for example via a WLAN,
to communicate, for. B. read from a portable disk
To submit data. Such a wireless interface device
includes a physical interface, e.g. B. an antenna, a control unit,
such as B. a driver for driving the interface, and a
Read / write device for controlling the communication by commands
a corresponding communication protocol, preferably as part
an operating system of an integrated circuit of the card reader
or as an independent, possibly reloadable application.
ZigBee (derived from the zigzag dance of bees name for
a contactless protocol for data transmission via
short distances) -, DECT ("Digital Enhanced Cordless Telecommunication";
digital, improved wireless communication) -, GSM ("Global
System for Mobile Communication ") -, Wimax (" Worldwide Interoperability
for Mircowave Access "), WiFi (" Wireless Fidelity ")," Digital
Radio Mondial "(worldwide digital radio), DAB (" Digital
Audio Broadcasting ") and DVB (Digital Video Broadcasting) connections,
as well as communication via infrared (IrDA, "Infrared
Data Associatiort '), visible and other optical couplings
possible. The card reader can also be used with a component for
contactless communication in UHF range ("ultra-high-frequency")
Providing a switch means for enabling and disabling the
Power supply of the contact-type data communication interface
Helps to prevent short circuits, for example
an open contact surface of the card reader on metal too
lie comes. The power consumption of the card reader can be low
be held by the said radio and other interfaces
only be activated by pressing a button.
the invention will be exemplified with reference to the accompanying drawings
1A a front side of a preferred embodiment of a card reader according to the invention in plan view;
1B the back of the card reader 1A in plan view;
1C a longitudinal section through the card reader 1A ;
2 a second preferred embodiment of a card reader according to the invention in a perspective view;
3 a section of a third preferred embodiment of a card reader according to the invention in cross section; and
4 Parts of a circuit arrangement in the card reader 3 ,
The 1A to 1C show a card reader 10 from its front, its back and in a longitudinal section through the card body 12 of the card reader 10 , Regarding 1A includes the card reader 10 an output device designed as a display device 20 and an input device formed as a keyboard or numeric keypad 30 , The card body 12 is manufactured by an injection molding process. A production of the card body 12 by lamination is also possible. In both cases results in a flexible, flexible card body; but also a rigid card body 12 can be provided. The card body 12 may be printed, for example, with a photo, or include embossing, for example, the name of the user, and optionally be protected with a transparent cover. He may additionally contain security elements, such. B. an embossed hologram. Optionally, the card body can be reinforced, z. B. by a metal frame, resulting in a rigid card body, or contain jewelry elements. Additional features may be - imprinted, foldable, extendable from recesses in the card body, etc. - integrated into or on the card body, such as a loupe, a ruler, a mechanical key, a toothpick, a knife, a GPS chip (chip for Position determination by means of the "Global Positioning System"), a light-emitting diode illumination, a solar cell, a piezoelectric energy converter, a thermal generator and the like.
The display device 20 serves the output of data. It can output alphanumeric characters and has a size that allows the ordinary user to read the display with the naked eye. It is located in the upper right quadrant of the front of the card reader. Both size and arrangement position of the display device designed as a display 20 can be varied. Also a large display that almost covers the entire surface of the card reader 10 can be provided, as well as a small display with dimensions of only a few millimeters. The output of other or other characters is also within the scope of the invention. The card reader 10 can be configured to output the output acoustically instead of by means of the display, for example by means of speech through a loudspeaker, or suitably coded as a buzzer or beep via a "Beeper" or "buzzer". Other output devices for outputting status information about states described below may also be provided. For this purpose, for example, an optical signal generated by light emitting diodes via a light guide z. B. at an edge of the Kar tenlesers 10 so that the output can be seen even when the surfaces of the card reader are covered.
The keyboard 30 takes the left half of the front of the card reader 10 one. The characters 0-9, * and # can be entered. The input of other characters may also be provided. Also the size of the keyboard 30 and their arrangement on the card reader surface are changeable. Using the keyboard 30 can the card reader 10 be controlled in operation by z. B. be entered by numbers coded commands. Buttons, buttons, switches, and the like may be used as alternative or additional input devices 30 serve. These can be on the surface of the card reader 10 be arranged, but also on the edge of the same or partially in the card body 12 integrated, such as a thumbwheel for entering numbers. By means of one of these input devices 30 a PIN can be entered or the display of a one-time password (OTP) 20 be initiated. Includes the card reader 10 additionally a clock, the generation of one-time passwords can be time-dependent. The input of acoustic information can be done by means of a microphone. A device for inputting optical information, for example in the form of a barcode, can also be provided. For this purpose, a photodiode, a photosensitive line or a camera are suitable. In addition, sensors for entering biometric features of the user, such. B. fingerprints, in the card reader 10 to get integrated. By means of the camera a face recognition can be made possible. User input biometric features may be used to enable and / or disable certain features of the card reader.
Regarding 1B includes the card reader 10 a data communication interface 40 , which as a physical interface comprises a contact field for contact-type communication with a portable data carrier. Contact with contact surfaces of a data carrier to be read, for example the six or eight standardized contacts of chip cards according to ISO standard 7816, is made via the contact field 40 by means of sliding contacts 41 made by the card reader 10 placed on a disk to be read so that the sliding contacts 41 come to rest on the corresponding contact surfaces.
Data communication interface also comprises a control device,
the one communication connection with a disk to be read about
creates the physical interface. The control device
can z. B. be a driver for the contact field, as
System routine or as part of an integrated operating system
Circuit of the card reader can be configured and a corresponding
Communication protocol supported.
Preferably, the outline of the card reader 10 and the arrangement of the contact field 40 on the card reader 10 adapted to the outline of the disk to be read and the arrangement of the contact surfaces on the same. Alternatively, instead of the sliding contacts 41 spring-loaded beads are used. These are retracted with retention contact springs inside the card body and therefore do not protrude beyond the operation of the card reader outside of the card reader. Is the card reader 10 in operation on a disk to be read, so the beads are - extended by pressure on the surface of the card reader at the appropriate location directly above the beads - and thereby make contact with the contact surfaces of the disk ago. Instead of contact springs, it is also possible to use only (gold) beads pressed into holes.
Another way to make a contact field 40 provides a module that is a mirror image of the contact surface module of a data carrier to be read. Globules inside the card reader 10 can while resting the card reader 10 on the disk to be read then by pressure from the side opposite the disk side of the card reader 10 the contact surfaces of the contact module of the card reader 10 push outward and thereby assist in establishing a Berührkontakts with the contact surfaces of the data carrier to be read. The contact field 40 in any embodiment described, can be incorporated into an already prefabricated card body 12 be implanted. It may be provided a cover sheet to the contact field 40 to protect outside of the factory.
Alternatively or additionally, the data communication interface 40 of the card reader 10 comprise an antenna which is designed for contactless communication with a suitably established data carrier. For this purpose, the antenna is preferably in the card body 12 integrated and is with the in 1C shown integrated circuit 70 coupled. The integrated circuit controls the card reader. An operating or control system running on it may comprise all the necessary control functions, for example a driver for the display 20 , The functions of However, display control and the calculations to be performed may also be distributed among a plurality of integrated circuits. Furthermore, a card reader 10 be provided, which is adapted to convert a set up for contact-type communication portable media to a contactless communicating disk. For this, the card reader becomes 10 placed on the disk and provides as described above by means of the data communication interface 40 a communication connection to the disk ago. Kartenleserintern a conversion of the protocol of the contact-based communication of the card reader with the disk to a suitable Kontaktlosprotokoll for communication of the card reader - instead of the disk - with another, set up for contactless communication card reader. Contactless communication of the thus retrofitted data carrier with other contactlessly communicating card readers is then enabled by means of the antenna.
The reading out of data from a portable data carrier is carried out by means of a reading device. This can be part of an operating system that runs on an in 1C shown integrated circuit 70 of the card reader 10 runs and the card reader 10 controls, be trained. After the data communication interface 40 has established a communication connection with the data medium to be read, the reading device uses the commands generated and supported by a control device of the data communication interface and a protocol, for example the T = 0 or T = 1 protocol, for reading out data from a data carrier and storing the data in the circuit 70 , Optionally, data transfer can be via USB or other suitable protocol.
The card reader 10 may further comprise a writing device which is also part of the operating system of the circuit 70 may be or may be designed as a system or application program. By means of the writing device it is the card reader 10 possible to write data via a data communication interface 40 to be transferred to a memory of a porous data carrier or any other data memory. Has the card reader 10 For example, via two data communication interfaces, which are set up to simultaneously establish a communication connection to each volume, the card reader can communicate simultaneously with two portable data carriers and data from a memory of a data carrier by means of the reading device via the first data communication interface, eg. B. a contact field on the back of the card reader, read and in the memory of the other disk by means of the writing device via the second data communication interface, z. B. a second contact surface on the front or back of the disk transferred. Furthermore, both the reading function and the writing function may be possible for both cards.
The card reader can still have a memory different from one in the integrated circuit 70 possibly existing memory. The memory may be used for caching data incurred in a process performed by the portable data carrier, for example for storing receipts for payment transactions. This data can be read out again from the memory of the card reader at a later time, preferably via an additional interface of the card reader described below. The memory can also store, for example, a plurality of OTPs of a portable data carrier and thereby, in particular in conjunction with a keyboard for inputting, for example, a PIN, temporarily be used instead of the data carrier. Optionally, a clone (copy) or derivative of the original data carrier (a so-called partner card) may be made on the card reader by transmitting the secret of a portable volume (eg, the so-called "seed" of the OTP system).
In 1B are as a support device 50 Gumminoppen in corner areas of the back of the card reader 10 shown. The reading of data from a memory of a portable data carrier is usually done by the card reader 10 is placed on the portable data carrier. In the case of contact-based data transmission via the contact field 40 of the card reader 10 It is essential that the sliding contacts 41 of the contact field 40 (or alternatively formed contacts) come to rest on the corresponding contact surfaces of the data carrier and the contact thus produced remains trouble-free over the entire time of data transmission. These are the rubber knobs 50 by causing a slippage of the card reader 10 on the disk.
The same purpose can also be achieved by the card reader is designed to be adhesive on the side facing the read-out disk when reading out, that is, for example, siliconized on its back. A recess on a contacting side of the card reader at the point at which a data carrier to be read out is provided with an embossing, that is to say complementary to such a high embossing area, has a similar stabilizing effect. Clamping devices are possible which hold the data carrier during data transmission. These may be in or on the card body 12 be integrated from the inside of the card body 12 be led out, using Klappmecha function or support similar mechanisms. Is the outline of the card reader 10 larger than that of a disk to be read, so can recesses in the card reader 10 be provided that receive a read-out disk, such as a MultimediaCard or SD card for reading. It can be provided that the card reader 10 Has kinks that allow him to read when reading a volume to be read partially by one side of the card reader 10 is folded. The read-out medium is thereby held and guided simultaneously. It is also possible that the card reader is brought by turning two parts against each other in a form in which a data carrier to be read is held and guided during data transmission. Turning it up can change the outline of the card reader. The card reader 10 can also be surrounded by a shell that receives the data medium to be read and leads. Likewise, it is possible to provide a separate envelope into which the card reader 10 and the data carrier to be read out is jointly introduced for readout.
Optionally, an item for storing portable media, such as a wallet, may be a card reader 10 such that a stored in the wallet volume automatically or z. B. initiated by pressing a button, can be read. In this case, the wallet may be equipped with only one display, but a plurality of data communication interfaces, for example one each in a compartment for storing a data carrier. By pressing a button corresponding to a corresponding compartment, a display of the data read from the data carrier in this compartment then takes place in the display.
Supporting tools can be used to correctly align card readers 10 be provided with respect to the data medium to be read, such as folding guide elements. By optical aids, this purpose can be achieved, for. Example, by a partially transparent card body of the card reader, are applied to the geometric shapes, which, if they are aligned with appropriate geometric shapes on the read disk, guarantee a correct orientation of the card reader on the disk. Suitable alignment can also be supported by means of appropriately arranged magnets who the. Disturbing effects on the occurrence of loose contacts, z. B. too frequent OTP generation can be countered by means of a time delay mechanism in the reading device. The quality of the contacting can be represented by means of a light-emitting diode display, in order to give the user the possibility of detecting and correcting an insufficiently established communication connection.
Additionally, it may be useful to use the card reader 10 equipped with a short-circuit detection that is set to turn off the voltage to a short circuit, for example, in case of accidental slipping of the sliding contacts 41 or when resting the contact field 40 on metal, to prevent. Another circuit can be the card reader 10 and to protect a data carrier to be read from damage by electrostatic discharge (ESD).
The outline of the card reader 10 corresponds in the in the 1A to 1C illustrated embodiment the outline of a smart card according to ISO standard 7816. Due to the procedure described above when reading a portable data carrier by means of the card reader 10 can also other, especially smaller outlines for the card reader 10 Find application. It is possible, for example, to adapt the card reader in only one dimension of a chip card to be read out, as a result of which the alignment of card reader and data carrier can continue to be carried out in a defined manner. Also, two edges of the card reader, which are perpendicular to each other, can be used to align with respect to the data medium to be read. As long as the card reader is large enough to place the data communication interface correctly on the contact surfaces of the data carrier, the card reader can 10 even in two dimensions, length and width, be smaller than a volume to be read. Optionally, the outline of the card reader may also be larger than that of a data carrier to be read. In this way, attachment of guide elements described above for aligning the card reader with respect to the data carrier to be read practically on a surface of the card reader is possible, for. B. as a guide bar.
The thickness of the card reader 10 is equal to a chip card to be read in accordance with ISO standard 7816. Much thicker card reader, z. B. up to a few millimeters, are also within the scope of the invention. These then have a higher stability and are suitable to accommodate additional, already described and explained below features.
Regarding 1C includes the card reader 10 a separate, designed as a battery, ie one or more primary cells, power supply 60 , is also supplied with a read-out process, a readable portable media with energy. The battery 60 is in the card body 12 integrated arranged. But it can also be designed interchangeable. The battery 60 supplies the integrated circuit 70 who is the card reader 10 controls, and the display 20 with energy. Also, other components already described and described below, which require energy, via the battery 60 be supplied. Instead of the battery 60 It is also possible to provide a rechargeable battery, ie one or more secondary cells, which is contact-based, for example via the contact field 40 , is charged. A contactless rechargeable battery can also be used. By means of a status display, the state of charge of the battery 60 or the battery are displayed, for example by means of light emitting diodes as described above. The battery can be charged by means of solar cells, a piezo or thermal generator, via a radio interface or an induction loop, which are applied to a surface of the card reader or connected by means of a plug connection to the card reader.
The integrated circuit 70 - or the group of circuits that together perform the same functions - controls the card reader. As already mentioned, an operating system running on it contains all the required control functions, for example drivers for the display 20 and the keyboard 30 and the like, and writing and / or reading means for accessing a data carrier to be read and a control unit for driving and supporting the data communication interface. Also already described and described below electronic components are controlled over it, such as an already explained memory. The circuit 70 is with the sliding contacts 41 of the contact field 40 , with the display 20 and the keyboard 30 (in 1A shown).
The card reader 10 may include a personalization device. This can be data about the user or a user group of the card reader 10 include. The personalization device may contain digitally stored data and as part of the circuit 70 or be formed by means of a smart chip (a radio frequency identification module). Purpose of personalization of the card reader 10 it is the reading rights of the card reader 10 to restrict. It can be provided by an appropriate personalization that a user of a card reader can only read his own smart cards, but not another user. Other applications provide that a privileged group of users, e.g. As the police, certain media can read, such as identity cards, but not the users themselves. As known from smart cards, the card reader 10 Other personalization features include, for example, a printed photo of the user, whose name in the form of a stamping and the like.
It can be provided that the card reader 10 can be used as a stand-alone portable data carrier. That is, it has all the essential features of a portable data carrier, in particular it is readable as a portable data carrier via a data communication interface by another card reader. In this context, the card reader includes 10 a controller connected to an external device, e.g. B. another card reader, the read / write access to the memory of the card reader allows, so for example, the memory of the card reader for accesses from outside the card reader free.
The card reader 10 may include other interfaces for communication with other devices for transmitting read-out data. Wireless interface devices for communication over a WLAN, via Bluetooth, Zigbee, Dect, GSM, Wimax, WiFi, Digital Radio Mondial, DAB, DVB connections can be provided, as well as an ISDN interface. It is also possible to communicate via infrared, by means of visible or other optical coupling trained card reader 10 or one that contains a UHF tag. All interfaces of this type can be accessed via the integrated circuit 70 to be controlled. A transmission of read-out data about the human body within the framework of a body network (body-area network) can also be provided. The card reader 10 may further comprise a radio paging receiver. Other interfaces, such as USB for occasional connection to a PC, can be provided. The card reader may be further configured to monitor and control payment transactions at point-of-sale (POS) readers. It is also possible to design the card reader so that it can be used, for example, as a cashless cash register.
In 2 is a second embodiment of a card reader according to the invention 10 shown. In this case, the data communication interface includes a plurality of in the card body 12 integrated magnetic heads 80 that are set up, a magnetic stripe 110 of a portable data medium to be read 100 read. The magnetic heads 80 are equipped with an integrated circuit (in 2 not shown) of the card reader 10 coupled via the control unit of the data communication interfaces. The reading is done by the card reader 10 , as in 2 shown in the direction of arrow A on the disk to be read 100 to be led. For reasons of practicability of the described read-out process, which is preferably carried out by the user holding the data carrier to be read in the hand, the card reader should 10 always lie on a certain portion of its surface on the disk to be read in order to avoid instabilities. Therefore, the magnetic stripe can not be completely practical by means of only one in one card reader 10 integrated magnetic head are read out. That's why the card reader 10 with three magnetic heads 80 each providing a portion of the magnetic strip 110 read. The control unit of the data communication interface comprising the magnetic heads then calculates from the three of the magnetic heads 80 read part information the total content of the magnetic strip 110 , The number of magnetic heads used 80 may vary.
3 shows a section of a third embodiment of a card reader according to the invention 10 in cross section. He has a switch device 90 , which is designed as a combined contact and switch module. With the help of the contact and switch module 90 It is possible only when the same spring contacts 41 the data communication interface 40 to provide tension. The data communication interface 40 includes besides spring contacts 41 a metal dome 90 which serves as contact and switch. The metal dome 90 is designed to be when the card reader 10 not in operation, inwards into the card body 12 is arranged bent. This way, due to a related to 4 circuit described below, a short circuit can be avoided if the card reader 10 for example, comes to rest on metal. In operation, the metal dome is pressed by pressure on the surface of the card reader 10 in the direction of arrow B directly above the metal dome 90 deformed, as is in 3 is indicated by the dashed representation of the deformed metal dome. In this way can defined contact with a contact surface 120 of a data medium to be read 100 be made on the the Karteleser 10 to read it is placed. Pressure on the designed as a metal dome switch is thus exerted exactly at the point at which a contact is to be made. This improves the reliability of the switch and the contact made thereby. Preferably, the contact with the contact surfaces 120 of the data medium to be read out produced by that through the metal dome 90 made contact the ground contact of the disk 100 contacted. Optionally, multiple contact surfaces 120 be contacted in an analogous manner. After pressing the switch 90 If the pressure stops in the direction of arrow B, the metal dome deforms 90 back to its original, in the card body 12 retracted shape and contact with the contact surface 120 of the disk 100 will be interrupted.
Alternatively, the contact and switch module 90 also be designed such that a contact field 40 of the card reader 10 a module strip known from the production of smart cards with integrated contacts to summarizes, being in the interior of the card body 12 and above one of the contacts is a cavity. A switch according to the principle of the above-described dome, which is arranged in the cavity, can by pressure on the card reader surface from the opposite side of the contacts of the card reader 10 be actuated thereby closing the contact with an underlying contact on the module strip. In this embodiment, the known manner of chip cards production method of contacting units can be maintained and the switch area remains dust-free. Production techniques for installing the contact and switch module 90 can be modeled those for the installation of integrated circuits in portable data carriers. The desk 90 can also be designed as an ordinary, separate switch with two contacts or in an alternative mechanical form, for example by extending or releasing contacts by a sliding element.
4 schematically shows parts of a circuit arrangement for interconnection of the contact and switch module 90 of the card reader 10 out 3 , Contact surfaces C1 and C5 of the data carrier to be read 100 be by means of two contact springs 41 of the card reader 10 with load 11 - when resting the card reader 10 on the disk - permanently contacted, taking the battery 60 of the card reader 10 is only turned on when the contact 90 the metal dome 90 corresponds as described above and contacts the contact surface C5. The card reader can come to rest with this circuit without risk of a short circuit on metal. Furthermore, the power consumption of the card reader is very low because the battery is only pressed while the switch 90 is turned on. Optionally, this circuit can be applied analogously with two contacts on Vcc (C1) or another contact. The principle of the circuit arrangement shown can also be realized when one of the metal dome 90 different switch mechanism is used, especially when the switch is not directly above the contact surface.
The provision of multiple contact and switch modules 90 For example, it can be used to provide a keyboard with a key lock by making an input via the keyboard possible only when it is released by another contact and switch module in one of the described embodiments.
in particular, the portable data carriers to be read out can be
chip cards, magnetic stripe cards, smart cards, multimedia cards, SD cards,
(U) SIM cards and the like act.
QUOTES INCLUDE IN THE DESCRIPTION
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Cited patent literature
- - DE 2852941 C2 
- WO 03/107254 A1