Data input device.

p0001The invention relates to an arrangement for inputting data according to the preamble of claim 1.

p0002Smart cards as [dentifikationskarten are already well known. The chip cards containing at least one in tegrated circuit, which may be formed as a memory circuit and / or as a circuit with logic functions, such as a microcomputer.

p0003In the application of the chip card, this usually be inserted into a terminal which is connected to a computing system. The user usually in the terminal dates, such as a personal identification number that is associated with its own smart card. In order to prevent abuses with the smart card, the current smart cards already offer a high level of security. However, a further increase in safety in the wine transfer of personal data is desirable for some applications, especially in the banking industry, with access permission to display text or retrieving messages in a messaging service. For example, standing in front of working with smart cards ATMs more people can recognize the input from the user's personal identification number or even an unauthorized manner caching others these identification numbers to the devices. There is also the danger that might originally from the keyboard at the terminal input and transmitted to the smart card data and the `the terminal transmitted from the smart card data are stored.

p0004It is often necessary to be able to enter data in a processing unit in a simple manner by persons authorized to access. For example, data has to be changed at short notice in a manufacturing process. This can also be done by means of a smart card. However, the data in the chip cards normally only using a corresponding terminal changeable.

p0005The invention is therefore the "object to provide an arrangement for inputting data using a smart card, in which the data can be entered easily and with great security against unauthorized modification.

p0006According to the invention the object is achieved with the arrangement of the type mentioned by the features specified in the characterizing part of patent claim 1.

p0007The assembly according to the invention has the advantage that a user, the data never in a foreign terminal for him, as a public communication terminal, a GeIdautomaten etc. has to enter, because the input always takes place via its own smart card. Furthermore, they account risks that may occur with the input of data into a not to seeing as safe terminal. The fundamental advantage of the arrangement is that the input and processed data are transmitted without operational errors on a machine-oriented interface to the terminal. Finally, a further advantage is that during the data exchange an induced by the computing facility and secured by the arrangement verification is possible, whether the received data originate from the specified smart card.

p0008The keypad on the smart card is preferably formed as a numeric keypad. It can also be configured as alphanumeric keypad and serve to Engeben, encryption or signing of alphanumeric data.

p0009The envisaged in the smart card processing unit can also be designed such that it compares input identifiers, such as fingerprints, handwriting or print strength while writing with stored identifiers. In particular, the advantageous if the processing unit according to a predetermined algorithm carries out an encryption of the input data.

p0010In order to deliver the results of the stored data zwischenzuspeichem according to a predetermined algorithm and at a later time to the terminal, it is advantageous if the smart card includes a latch.

p0011Appropriately, the smart card in addition provided with a power supply, a keyboard and a display unit on the format of a standard credit card.

p0012The data to be entered are, for example, personal data, for controlling a manufacturing process required data or detected data.

p0013An embodiment of the assembly according to the invention is explained in more detail below with reference to drawings. Show it<ul><li>Fig. 1 is a plan view of a first embodiment of the smart card and</li><li>Fig. 2 is a plan view of a second embodiment of the smart card.</li></ul>

p0014The smart card shown in FIG. 1 K containing at least one not shown integrated circuit, which may be formed as a memory circuit and / or circuit with logic functions. The access to the circuit is effected by contacts KO, which are arranged on the surface of the chip card K. The smart card has the format of a conventional credit card and additionally includes a keyboard T, which is designed as a numeric keypad or an alphanumeric keyboard. Furthermore, the chip card K on a display unit A, at which the data entered can be displayed. These data are, for example, personal information such as identification numbers. After entering the personal data, these are processed in the smart card K and can then be fed via a terminal in a known manner of a computer system, said computer system with the terminal may also form a unit.

p0015The chip card K in addition to the memory circuits and a circuit with logic functions include a buffer in which the input and processed data is temporarily stored and can be retrieved at a later time from the chip card K to supply it to the computer system.

p0016At the smart card K shown in FIG. 2, the keyboard T is divided into four keyboard segments T1 to T4, which are arranged at the edge of the chip card K. The smart card contains K in this embodiment, in addition a known magnetic stripe M and two known per se embossed regions P, where data can be stored or displayed. These chip card K contains contacts KO and a display unit A.

p0017The processing unit in the chip card K can be formed so that it encrypts the entered personal data, in order to increase the security of the transmission of the data to the computer system on. Furthermore, the processing unit can be designed such that it checks a comparison of input identifiers such as personal identification number, fingerprints or handwriting and the print pressure when writing.

p0018In the chip card K can also be a program be provided for processing the input data. This program may include applications in the banking industry or as an algorithm for encrypting of transferred access authorization to a system.

p0019The data can also be detected data or control data for an operation, so that beispielswesie in a manufacturing process by an authorized person data can be easily detected or control data can be entered for a change in the normal manufacturing process.

LIST OF REFERENCE NUMBERS

p0020<ul><li>K chip card</li><li>KO contacts</li><li>T keyboard</li><li>T1 to T4 keyboard segments</li><li>A display unit</li><li>M magnetic stripe</li><li>P embossed areas</li></ul>