KR19990082861A - Keyboard with card processing function and control method thereof - Google Patents

Abstract

The present invention relates to a keyboard having a card processing function capable of transmitting not only keyboard data but also reading data of a smart card through a single PS / 2 line, and a method of controlling the same. A key matrix having a key and a plurality of function keys and generating a key code corresponding to each key, a card holder which senses whether a card is inserted and reads data recorded in the inserted card, A clock generator for providing a synchronous clock signal, and a controller for outputting a key code generated from the key matrix and operating the card holder when a card processing instruction is requested from the outside, and transmitting the read card data to a device; The operation checks the instruction from the PC while transmitting the keycode from the key matrix at regular intervals, and if there is a card processing instruction, Before transmission, operate the card holder to transmit the input card reading data first, or check the existence of the card in the card holder, and transmit the card reading data or the key code when the card exists, and the card in the card holder does not exist. If not, the corresponding code is generated.

Description

Keyboard device with card processing function and control method thereof {KEYBOARD WITH CARD PROCESSING FUNCTION AND CONTROL METHOD THEREOF}

The present invention relates to a keyboard device for inputting data in a personal computer, and more particularly, a keyboard having a card processing function capable of transferring keyboard processing data and smart card reading data through one PS / 2 line, and a control thereof. It is about a method.

As a keyboard which is most commonly used as an input means of a personal computer (hereinafter referred to as "PC"), various types of keyboards have been developed.

These keyboards are convenient for directly entering commands to execute. Basically, the keyboard has a number of character keys set to English and Korean or other local characters, a space key to enter blanks, numeric keys from 0 to 9, and other special functions. Special key to operate, function keys (F1, F2, ..., F12) to perform the functions specified in each program, special control keys (e.g. Shift key, Ctrl key, Alt key ...), cursor movement key When the key is pressed, the key code indicating the pressed key is transmitted to the PC through the PS / 2 line.

Nowadays, computer communication and electronic commerce are spreading through these days, and a means for verifying user information and eligibility for a user is required. Therefore, in addition to a keyboard, data can be read from a smart card, which is an identification card. Installation of a card reader is required.

In the case where a card reader is to be provided as described above, a keyboard 2 and a card reader 4 are provided in a main body 3 of a personal computer equipped with respective input / output ports (not shown). Connect via the connecting cable.

At this time, the computer device should have an interface means and an input / output port for inputting / outputting data with the card reader 4 in addition to the interface means and input / output port for receiving data from the keyboard 2.

The implementation of this system not only takes more space, but also requires more card readers and interface devices for card readers, which increases the cost, and the PC requires two protocols corresponding to each port connected to the keyboard and the card reader. As a result, the control load increases.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object thereof is a keyboard having a card processing function capable of transmitting not only keyboard data but also reading data of a smart card through one PS / 2 line, and the same. It is to provide a control method.

1 is a perspective view showing an installation example of a conventional card reader.

2 is a perspective view showing an example of a keyboard implemented according to the present invention.

3 is a block diagram schematically showing an internal configuration of a keyboard according to the present invention.

FIG. 4 is a circuit diagram illustrating the keyboard of FIG. 3 in detail.

5 is a flowchart showing an embodiment of a control procedure in the keyboard according to the present invention.

6 is a flowchart showing another embodiment of the control procedure in the keyboard according to the present invention.

Figure 7a is a block diagram showing the configuration of card processing instructions and response words used in the keyboard according to the present invention, Figure 7b is a flow chart showing the execution process according to the receipt of the card command on the keyboard.

8 is a flowchart showing an embodiment of a communication method for card data processing between a keyboard and a computer having a card reading function according to the present invention.

* Description of the symbols for the main parts of the drawings *

31: controller

32: key matrix

33: cardholder

34: clock generator

35: display unit

As a constitutional means for achieving the above object of the present invention, a keyboard device having a card processing function according to the present invention includes a character key, a numeric key, and a plurality of function keys, and a key code corresponding to each key. A key matrix generating a key matrix, a card holder detecting whether a card is inserted and reading data recorded on the inserted card, a clock generator providing a clock signal for synchronizing the card holder, and a key matrix generated from the key matrix. And a controller for operating the card holder to transmit the read card data to the device while outputting a key code.

The control method of the keyboard configured as described above includes a key check step of checking whether a key of a key matrix is pressed and storing a key code for a pressed key output from the key matrix if it is pressed, and after the key check step, the keyboard A command checking step of checking whether there is a command from a PC connected with the PC, and if there is a command sent from the PC in the command checking step, receiving and reading the command, and according to the read command A command processing step of controlling a matrix and a card holder to execute keyboard or card processing, and determining that there is no command from the PC in the command checking step, or after the command processing step is completed, Characterized in that the key code transmission step of transmitting the key code to be transmitted to repeatedly executed.

In another embodiment, a control method of a keyboard having a card processing function includes a card checking step of checking whether a card exists in a card holder, and a card data request command from a PC when a card is present in the card checking step. If not, check the key matrix to transfer the key code to the PC, and if there is a card data request command, the first data transfer step of reading the card data and transferring it to the PC, and if the card does not exist in the card check step, In this case, the second data transmission step of reading the data of the inserted card and transmitting the data of the inserted card to the PC is repeatedly performed when the card is inserted in the standby state.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and operation of the present invention.

Figure 2 is a perspective view showing the appearance of a keyboard implemented according to the present invention, a plurality of keyboard is provided with a card insertion opening 22 that can be inserted into the smart card 30 on the side of the keyboard body provided on the upper side. Here, the code data for the keyboard pressed by the user and the card reading data read from the card inserted into the card insertion opening 22 are all transmitted to the PC via one PS / 2 line 23.

Figure 3 is a block diagram schematically showing the internal circuit configuration of the keyboard with a built-in card reading function according to the present invention, the circuit configuration is operated in accordance with the set control procedure to transmit the input data of the keyboard to the PC, or smart A controller 31 which controls the card to be read-processed and transmits the read data to the PC; and a key code for a pressed key of a plurality of keyboards connected to the controller 31 and provided in the keyboard. A key matrix 32 for outputting a card), a card holder 33 for reading data written to an inserted card or writing data to an inserted card operated according to a control command of the controller 31, and the controller A clock generator 34 which operates in accordance with a control signal from (31) and applies a clock signal for synchronization to the card holder 33; It consists of a lamp unit 35 for displaying the operating state of the keyboard having a.

4 illustrates a circuit configuration of a keyboard according to an embodiment of the present invention in detail. The controller 31 includes a microprocessor 311 and an oscillator 312 that popularizes a reference clock signal to the microprocessor 311. ), A reset circuit unit 213 for applying a reset signal to the microprocessor 311 when the power is initially applied, and a key code generated from the key matrix 32 by being connected to the key matrix 32 to the microprocessor 311. A key board connection unit 314 and 315 to be transmitted to the PC), and a PC connection unit 316 to be connected to the PC to enable signal input / output with the PC, and the clock generation unit 34 has a circuit configured to oscillate at a constant frequency. (C2, C3), resistor (R2) and crystal oscillator (X2), and the logic circuit (NAG1, NAG2) by converting the signal oscillated from such an oscillation circuit into a digital clock signal, the lamp unit 35 is The operating state of each keyboard, e.g. N A plurality of lamps (LED1 to LED3) indicating UM LOCK, CAPS LOCK and the like, and a card holder operation lamp.

As described above, in the keyboard device having the card processing function according to the present invention, the card reading processing and the key input processing are performed by one controller, and the key input data and the card reading data are connected to the PC through one transmission line. It is configured to be sent to. Therefore, the PC can receive key input data and card read data using only one connection port and one communication protocol.

The keyboard device configured as described above is used for a general purpose system or a security system, and the control flow thereof varies. Hereinafter, the operation of the keyboard device is divided into a case where the general purpose system and a security system are used. Explain.

Fig. 5 shows the control procedure in the keyboard with the card reading function when used in general purpose.

According to FIG. 5 described above, when there is no command request for a smart card from the connected PC, the keyboard device transmits the keyboard data as in the normal keyboard control procedure, and the processing command for the smart card is transmitted from the PC. If authorized, keyboard transmission is interrupted, the authorized smart card processing instruction is processed first, and then back to normal keyboard processing. In this case, it can be used in an electronic commerce system using a smart card, and particularly useful when using a smart card as a payment method in electronic commerce.

The operation is described in detail as follows.

When the operation is started (401), a reset signal is applied from the reset unit 313 to the microprocessor 311, and the control unit 31 is initialized (501). After that, the following process is repeated until the power is turned off. In the loop, the following operation is performed.

First, a key check is performed to check whether the key is pressed or not (502). If the key is pressed, the code for the pressed key is stored in the buffer (503). Then, it is checked if there is a command sent from the PC (504).

On the contrary, in the check step 502, if a key is not pressed, it is immediately checked whether there is a command reception from the PC.

When the command is checked from the PC (504), if no command is sent (504), processing corresponding to the command is unnecessary, so that data temporarily stored in the keyboard data storage buffer (that is, the key code for the pressed key) is transmitted to the PC. Then, 510, the smart card is inserted or inserted card is checked whether there is an ejected event, and when such an event occurs by sending a predetermined code to the PC to inform that the smart card is inserted or ejected (512).

On the contrary, when checking the command from the PC, if there is a command transmitted (504), after receiving the command from the PC (505), it is determined whether the received command is a command for keyboard processing or a command for smart card processing. (506). Herein, if the command directs the keyboard processing, the corresponding command for the keyboard is processed, and an appropriate response message is transmitted to the PC according to the command (507). If the command is a predetermined process for the smart card, the smart card processing is performed according to the command. After that, an appropriate response is sent to the PC (508).

Examples of the smart card processing command include a power-on command of the card holder, a card presence / non-check command, a card holder option setting command, a read / write command, and the like. You can use code other than instructions.

However, if the received command is not a keyboard command or a smart card command, it is determined to be a reception error or an incorrect command and requests the command retransmission to the PC (509).

When the processing of the command is completed, the keyboard input data stored in the buffer is then transmitted to the PC (510), and the card insertion / ejection event is checked and checked, and a code indicating the event is transmitted to the PC. (511).

From the kisscan step 502 of checking whether the key has been pressed or not, the step of checking whether the smart card is inserted or the inserted smart card has been withdrawn and performing the processing accordingly is repeatedly performed until the power is turned off. Is a loop.

The keyboard device with a card processing function according to the present invention operates as described above, so that the PC can receive card reading data from the keyboard whenever the card data is requested from the keyboard when necessary.

As another embodiment, when a keyboard having a card reading function according to the present invention is used in a PC security system, the operation is performed as shown in FIG.

Here, the PC security system using a smart card refers to the use of a PC or to access data only when a registered card is recognized.

In this case, when the operation starts, the keyboard first checks whether a card exists in the card holder 33, that is, whether the card is inserted (601).

If no card is present, however, a predetermined set code (data) indicating that the card is not in the card holder 33 is transmitted to the PC (605), and then waited until the next card is inserted (606).

At this time, the PC having received the message that the card is not inserted from the keyboard may output a message requesting the card insertion on the monitor, and may stop other programs from proceeding until the card is inserted.

When the card is inserted in the standby state as described above (607), the controller 31 reads and reads the data recorded on the card (608), and transmits the read data to the PC (609).

However, when the card is in the inserted state (YES in the card presence check step 601), the controller 31 determines whether a card data request command has been transmitted from the PC. (602). If the card data request command has not been entered here, after performing the kisscan check that the key is pressed and the process for sending the code for the pressed key to the PC (603), the hotkey set to request card reading is pressed. Check (604). At this time, if the hot key has not been pressed, the process is executed again from the step 601 of checking for the existence of the card. If the hot key is pressed, the card is read to read the recorded data (309).

If the card data request command for requesting card reading is input in step 303, the card is read and the data is read (608).

Then, after the read card data is transmitted to the PC (609), the process returns to step 302 to check for the presence of a card.

That is, when the keyboard device according to the present invention is used in a security system, when the first operation is started, it is first checked whether a smart card is inserted, and when inserted, the data of the smart card is read and transmitted to the PC. Then, normal keyboard operation can be made. Then, it is checked whether the card processing instruction is transmitted from the PC on the way, and when there is a received instruction, the processing according to the card processing instruction is first executed before the key scan and the key code transmission.

Therefore, if the smart card is not inserted, the keyboard device cannot perform normal keyboard operation, i.e., key input, and also reads the card and transmits the data at the initial operation and whenever there is a card data request command. Only authorized cardholders can access the PC.

In the above two embodiments, the commands transmitted from the PC to the keyboard with the card processing function according to the present invention are divided into keyboard processing and card processing.

At this time, the card processing command uses a code not used for the keyboard, and the command structure is composed of a command part 1 byte and an arbitrary byte data part as shown in FIG. 7A, for example. In addition, the configuration of the response signal from the PC is composed of a portion indicating the response type and a data portion. The data section may or may not have options depending on the command.

In the processing flow according to the embodiment of the present invention shown in FIG. 5, the processing of receiving the smart card processing instruction from the PC and performing the instruction is shown in more detail as shown in FIG. 7B. In operation 505, the controller determines whether the received command is a smart card processing command or a keyboard processing command (506). When the keyboard command is a keyboard processing command, the keyboard command is processed (507). In contrast, in the case of a smart card processing command, first, the card processing command of the received command is read (508a), and then data and options are received (508b). Then, according to the read command, a process for the smart card is actually applied, that is, the controller 31 applies a control signal to the card holder 33 in accordance with the designated command, and according to the control signal, the card holder 33 The operation is performed to check whether a predetermined data or response signal is applied (508c), and the execution of the smart card processing instruction is completed (508d) by transmitting the processing result to the PC.

The card processing command from the PC uses a code not used by the keyboard. As another example, the LED set / reset status indicate command (0xed) of the LED provided in the keyboard is used. It is available. That is, if the set / reset status display command (Oxed) is applied twice from the PC continuously, and each subsequent data is 0x07, 0x00 (801, 802), the card control command is first recognized as being applied. And then set again. When the reset status indication command (0xed) is applied again and 0xa5 is received as the next data (803), the card command execution starts with the next authorized command and data. .

After processing the data for the card processing from the PC in the controller 31, the response is transmitted to the PC using the scan code, in which the card processing data is placed between "[" and "]". do.

The basic control data of the card control data include card insertion check, card data reading, card data writing, and ID data request. For example, if the PC requires an ID of the card, the controller 31 If the microprocessor 311 of the (3) applies the ID lead signal to the card holder 33, and reads the ID from the card into which the card holder 33 is inserted, and provides it to the microprocessor 311, the microprocessor 311 Transmits the ID data read from the card holder 33 to the PC. At this time, the PC compares the registered ID with the read card ID, and allows the use of the PC only when it is the same, and if it is not the same, disallows the use of the PC, or recognizes it as an electronic commerce settlement agent.

As described above, the keyboard having a card reading function according to the present invention transmits keyboard data and card data using one transmission line (PS / 2 line), thereby solving the interface of the PC to the smart card. By reducing the control of the PC, using a single controller and a single communication line, not only lowers the price, but also has an excellent effect to secure the utility and convenience of space utilization. In addition, there is an excellent effect that can increase the security of the PC when applying the keyboard with a built-in card reading function according to the present invention to the PC security system.

Claims (11)

A key matrix having a character key, a numeric key, and a plurality of function keys to generate a key code corresponding to each key; A card holder for detecting card insertion and reading data recorded in the inserted card; A clock generator which provides a clock signal for synchronization of the card holder; And a controller for outputting a key code generated from the key matrix and operating the card holder to transmit the read card data to a device when a card processing command is requested from the outside. The method of claim 1, wherein the controller A microprocessor that controls the operation of the card holder and the key matrix and outputs key codes or card reading data in accordance with the order of reading or requests from an external device; An oscillator for generating a clock signal of the microprocessor; A reset unit for initializing the microprocessor upon initial application of power; A key keyboard connection unit connected to a key matrix and receiving a key code and delivering the key code to the microprocessor; A keyboard having a card processing function, comprising a PC connection portion connected to a PC, which is an external device, to enable data exchange between the PC and the microprocessor. The method of claim 1 or 2, wherein the controller It checks whether a key code is input from the key matrix at regular intervals, transfers the input key code to the PC, checks if a card processing instruction is authorized from the PC, and when there is a card processing instruction, the card holder is A keyboard having a card processing function, characterized in that for transmitting the card read data input by operating first, and then transmitting the key code. The method of claim 1 or 2, wherein the controller If there is a card in the card holder, and if a card exists, the card read data is transmitted according to the request from the PC, or the key code generated by checking the key matrix, and if there is no card in the card holder, Wait for the card to be inserted, and after the card is inserted, read the card to transfer the card data, and then transfer the card read data or the key code output from the key matrix upon request from the PC. Keyboard with card processing function characterized in that the control box. A key checking step of checking whether a key of the key matrix has been pressed, and if it is pressed, storing a key code for the pressed key output from the key matrix; A command checking step of checking whether there is a command by checking whether there is a predetermined command from the PC connected to the keyboard after the key checking step; A command processing step of receiving and reading a command from the PC in the command checking step, and executing keyboard or card processing by controlling the key matrix and the card holder according to the read command; In the command checking step, it is determined that there is no command from the PC, or after the command processing step is completed, the key code transmission step of transmitting the key code for transmitting the key code stored in the key checking step to the PC is repeatedly executed. Keyboard control method with a card processing function to. The method of claim 5, wherein the control method of the keyboard having the card processing function is After the key code transfer step, the card processing function further comprises the step of checking whether an event is inserted into the card holder or the inserted card is removed, and notifying the PC when such an event occurs. Control method of the keyboard provided with. 6. A card processing function according to claim 5, wherein the command inputted to the keyboard is divided into a keyboard processing command and a card processing command, and the card processing command uses a code not used in the keyboard command code. How to control the keyboard. The method of claim 5, wherein the command inputted to the keyboard is divided into a keyboard processing command and a card processing command, and when the LED set / reset status display command is sequentially applied two or more times among the keyboard commands, data to be applied thereafter is carded. A control method for a keyboard with a card processing function, characterized in that it is recognized as processing command data. A card checking step of checking whether a card exists in the card holder; When the card is present in the card checking step, it is checked whether there is a card data request command from the PC. If there is no card data, it checks the key matrix and transmits the key code to the PC. A first data transmission step, In the card checking step, if a card does not exist, it is notified to the PC, and when the card is inserted, the second data transfer step of reading the data of the inserted card and transmitting it to the PC is repeated. Keyboard control method with a card processing function. The method of claim 9, wherein the control method of the keyboard having the card processing function is In a first data transfer step, further comprising a third data transfer step of checking whether the card reading hot key is pressed after the key code transfer and reading the card data and transferring it to the PC when the hot key is pressed. Keyboard control method with a function. 11. The method of claim 9 or 10, wherein the determination of whether there is a card request data command is performed by recognizing a card request data command when an LED set / reset status display command is applied two or more times in succession. Keyboard control method with a card processing function, characterized in that consisting of.