JP3210988B2 - Keyboard with card processing function and control method thereof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a keyboard for inputting data in a personal computer.
More particularly, the present invention relates to a keyboard having a card processing function capable of transmitting keyboard processing data and, for example, smart card read data through one PS / 2 line, and a control method thereof.

[0002]

2. Description of the Related Art A personal computer (hereinafter "P")
A keyboard is most commonly used as a data input unit (abbreviated as "C"), and various types of keyboards have been developed.
It is convenient for directly inputting an instruction to be executed. Basically, there are a number of character keys set with alphabets and Korean characters and other characters, a space key for inputting blanks, a number key for 0-9, In addition, special keys for performing special functions, function keys (F1, F2... F12) for performing functions specified in each program, and special control keys (eg, Sh)
if key, Ctrl key, Alt key,...), and a key for moving a cursor. When such a key is pressed, a key code indicating the pressed key is transmitted to the PC through the PS / 2 line. .

[0003] By the way, computer communication and electronic commerce have been gradually spread through these days, so-called personal authentication means for user information and user qualification has been required. For example, installation of a card reader capable of reading data of a smart card is required. In the case where such a card reader is provided, conventionally, as shown in FIG. 1, a keyboard 2 and a card reader 4 are provided on a main body 3 of a personal computer having respective input / output boards (not shown). Connected through a connection cable.

[0004] In this case, the computer device 1 includes an interface means for reading input data from the keyboard 2 and, besides the input / output port, the card reader 4 and an interface means for reading and reading data. It is necessary to provide this input / output port. In the case of such a system, there is a problem that an extra space for installing the device is required, and a problem that an extra cost is required for the card reader and the interface device for the card reader. In addition, the PC uses two protocols corresponding to each port connected to the keyboard and the card reader, and thus has a problem in that the control load of the PC increases.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned conventional problems, and has as its object to transmit keyboard data through one PS / 2 line. It is an object of the present invention to provide a keyboard having a card processing function capable of transmitting read data and a control method thereof.

[0006]

According to the present invention, a keyboard having a card processing function according to the present invention comprises a character key, a number key and a number of function keys. A key matrix for generating a key code corresponding to the key, a card holder for sensing the presence / absence of card insertion and reading inserted card data, a clock generator for providing a clock signal for synchronizing the card holder, A controller for operating the card holder and transmitting the read card data to the apparatus when reading a key code from the key matrix and operating the card holder when a card processing command is requested from the outside.

The method of controlling a keyboard configured as described above checks whether a key of a key matrix is pressed and stores a key code of the pressed key read from the key matrix when pressed. A key checking step, a command checking step of checking whether there is a predetermined command from a PC connected to the keyboard after the key checking step, and a command transmitted from the PC in the command checking step when there is a command. Receiving and reading, controlling a key matrix and a card holder in accordance with the read command, and executing a keyboard or card process; and determining whether there is no command from the PC in the command checking step, Is completed, the key code stored in the key inspection step is changed to P
The step of transmitting a key code to be transmitted to C is repeatedly performed.

As another embodiment, a method of controlling a keyboard having a card processing function includes a card check step of checking whether a card is present in a card holder, and a card present in the card check step. Sometimes, it is checked whether there is a card data request command from the PC. If there is no command, the key matrix is checked and the key code is transmitted to the PC. If there is a card data request command, the card data is read and sent to the PC. A first data transmission step for transmitting, and a second step for notifying the PC of the absence of the card in the checking step and waiting for reading the data of the inserted card, and transmitting the data to the PC.
The data transmission step is repeatedly performed.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing the configuration and operation of the present invention. FIG. 2 is a perspective view showing the appearance of the keyboard 20 according to the present invention. A card insertion slot 22 into which a smart card 30 can be inserted is provided on a side surface of a keyboard body provided with a number of character boards. Here, the code data of the dial operated by the user and the card read data read from the card inserted into the card insertion slot 22 are all transmitted to the PC through one PS / 2 line 23.

FIG. 3 is a block diagram schematically showing the internal circuit configuration of a keyboard having a card reading function according to the present invention. In this circuit configuration, operation is performed according to the set control procedure, and the input data of the keyboard is transmitted to the PC.
And a controller 31 for reading and processing the data of the smart card and controlling the read data to be transmitted to the PC, and a number of characters connected to the controller 31 and provided on a keyboard. The key matrix 32 that outputs the key code of the pressed key to the controller 31 of the board, and operates according to the control command of the controller 31 to read the data recorded on the inserted card, and A card holder 33 that writes data to the inserted card, a clock generator 34 that operates in accordance with a control signal from the controller 31 and applies a synchronization clock signal to the card holder 33,
And a lamp section 35 which operates according to the control signal and displays the operation state of the keyboard having the card reading function.

FIG. 4 shows a detailed circuit configuration of a keyboard according to an embodiment of the present invention. A controller 31 includes a microprocessor 311 and an oscillating unit 312 for applying a reference clock signal to the microprocessor 311.
And the microprocessor 311 when power is initially applied.
A reset circuit unit 313 for applying a reset signal to the key matrix 32; and key board connection units 314 and 315 connected to the key matrix 32 and transmitting the key code generated from the key matrix 32 to the microprocessor 311.
So that signals can be read from and read to the PC.
It comprises a PC connection unit 316 connected to C.

The clock generator 34 includes a capacitor C which is configured to oscillate at a constant frequency.
2, C3, a resistor R2, a crystal oscillator X2, and logic circuits NAG1 and NAG2 for converting a signal oscillated from the oscillation circuit into a digital clock signal.
The lamp unit 35 has an operation state of a keyboard,
For example, NUMLOCK, CAPSLOCK, etc., and a number of lamps LED1 to L indicating the operation of the card holder and the like.
Consists of ED3.

As described above, in the keyboard device having the card processing function according to the present invention, the card reading process and the key reading process are integrated into one controller, and the key reading data and the card reading data are integrated. It is configured to be transmitted to a PC through two transmission lines. Therefore, the PC can receive the key read data and the card read data with only one connection port and one communication protocol.

The control procedure of the keyboard configured as described above differs depending on whether it is used for a general-purpose system or a security system. Hereinafter, the operation of the keyboard according to the present invention will be used for a general-purpose system. The case is described separately from the case where it is used for the security system.

FIG. 5 is a flow chart showing an embodiment of a control procedure in a keyboard having a card reading function when used in a general-purpose system. According to the flowchart of FIG. 5, the keyboard according to the present invention
If there is no command request to the smart card from the connected PC, the keyboard data is transmitted in the same manner as a general keyboard control procedure. However, when a processing command for the smart card is applied from the PC, the keyboard transmission is interrupted. The smart card processing command is processed first, and then the process returns to general keyboard processing. Such a device can be used in an e-commerce system using a smart card, and is particularly useful when a strike card is used as a payment means during e-commerce.

The operation will be described in detail below. First, a reset signal is applied from the reset unit 313 to the microprocessor 311 and the control unit 31 is initialized (50).
1). After that, the procedure from 502 is repeatedly executed. In the repetition loop, the following operation is performed.

First, a key check (KEY SCAN) is performed to check whether or not a key has been pressed (502).
If a key is pressed, the code of the pressed key is stored in a buffer (503). Next, it is checked whether or not there is a command sent from the PC (504). If a key is pressed in the checking step (502), it is immediately checked whether a command is received from the PC (5).
04).

If there is no transmitted command at the time of checking the command from the PC (504), since the processing is unnecessary, the data temporarily stored in the keyboard data storage buffer immediately (that is, the key pressed). After transmitting the key code of the key to the PC (510), it is checked whether the smart card has been inserted or the inserted card has been pulled out. To inform that the smart card has been inserted or removed (511).

At the time of checking the command from the PC, if there is a transmitted command (504), after receiving the command from the PC (505), the received command is a command related to keyboard processing. It is determined whether the command is a command related to smart card processing (506). Here, if the command is a command for instructing keyboard processing, the command related to the keyboard is processed, and an appropriate response message is transmitted to the PC (507). After performing the smart card processing according to the above, an appropriate answer is sent to the PC (50).
8).

As an example of a smart card processing instruction,
There can be mentioned a card holder power-on instruction, a card presence / absence confirmation instruction, a card holder option setting instruction, a read / write instruction, etc. In this case, the smart card processing instruction is a code other than the keyboard processing instruction. Should be used. If the received command is not a keyboard command or a smart card command, it is determined that the received command is a reception error or an incorrect command.
It requests the PC to retransmit the command (509).

When the processing related to the command is completed, the keyboard read data stored in the buffer is transmitted to the PC (510), and the card insertion / removal is performed.
A check is made to determine whether or not a withdrawal case has occurred, and if a case has occurred, a code indicating this is transmitted to the PC (511).
A key scan step for checking whether the key has been pressed
From step (502), the step (511) of checking whether the smart card has been inserted or whether the inserted smart card has been pulled out and performing the accompanying processing (511) is a loop that is repeatedly performed until the power is turned off.

The keyboard having the card processing function according to the present invention operates as described above, whereby the PC requests card data from the keyboard whenever necessary and receives the transmission of card read data from the keyboard. be able to.

As another embodiment, when a keyboard having a built-in card reading function according to the present invention is used in a PC security system, the operation is performed according to the procedure shown in FIG. Here, a PC security system using a smart card is a PC security system only when a registered card is recognized.
To be able to use or access data. In the keyboard operation in such a case, before performing the operation, it is first checked whether a card is present in the card holder 33, in other words, whether or not the card is inserted (601).

If the card is not inserted, a predetermined code (data) indicating that there is no card in the card holder 33 is transmitted to the PC (step 60).
5) Wait until the card is inserted (606). At this time, the PC receiving the message indicating that the card has not been inserted from the keyboard outputs a message requesting insertion of the card on the monitor, and can stop the progress of another program until the card is inserted. .

When the card is inserted in the standby state as described above (607), the controller 31 reads the data recorded on the card (608), and transmits the read data to the PC (609). ). However, if the card is in the inserted state [card presence check step (6
01) is “YES”], the controller 31 sends a card data request command (card data request comm.
And) is determined (602).

If the card data request command has not been read, a key scan for checking whether or not a key has been pressed, and the key code of the pressed key is set to P
After performing the process of transmitting to C (603), it is checked whether the hot key set to request the card reading is pressed (604). At this time, if the hot key has not been pressed, the process returns to the step (601) of checking the presence of a card (601), and the process is executed again. If the hot key has been pressed, the card is read and the recorded data is read. (608).

In step (602), if a card data request command for requesting card reading is input, the card data is immediately read (60).
8). Next, after transmitting the read card data to the PC (609), the process returns to the step (601) of checking whether or not the card exists.

That is, when the keyboard according to the present invention is used in a security system, it checks whether or not a smart card is inserted when an initial operation is started, and when inserted, the data of the smart card is checked. Read and send to PC. After that, normal keyboard operation is performed. Then, during the keyboard operation, it is checked whether a card processing command is transmitted from the PC, and if there is a received command, the card processing command is executed prior to the key scan and the key code transmission.

Therefore, if no smart card is inserted, the keyboard will operate normally, ie,
Key input can be performed, and the card data is read and transmitted at the time of the initial operation and every time a card data request command is issued, so that only the registered card holder can operate the PC. Become like

In the above two embodiments, the command sent from the PC to the keyboard having the card processing function according to the present invention is classified into a keyboard processing and a card processing. In this case, the instruction word for card processing uses a code not used for the keyboard, and the configuration of the instruction word is, for example, as shown in FIG.
e and an arbitrary byte data portion. Further, the structure of the response signal from the PC in response to this consists of a part indicating the response type and a data part. This data portion may or may not be described according to the option command.

In the processing flow according to the embodiment of the present invention shown in FIG. 5, the processing of receiving a smart card processing command from a PC and executing the command is shown in more detail in FIG. B), when a command is received from the PC (505), it is determined whether the received command is a smart card processing command or a keyboard processing command (506). For keyboard processing instructions,
The keyboard command is processed (507). If the command is a smart card processing command, first, a card processing command of the received command is read (508a), and then data and options are received (508b).

Next, the smart card is actually processed in accordance with the read command, in other words, the controller 31 applies a control signal to the card holder 33 in accordance with the designated command, and the card holder 33 operates according to the control signal to perform a predetermined operation. Processing such as checking whether data or a response signal has been applied is performed (508c).
Send to C. Thus, the execution for the smart card processing instruction is completed (508d).

The card processing command from the PC uses a code not used by the keyboard. As another example, an LED set / reset status display command [LED set / reset status indicat provided on the keyboard] is used.
e command (Oxed)] can be used. That is, a set / reset state display command (Oxe) is issued from the PC.
If d) is continuously applied twice and the subsequent data are Ox07 and Ox00, (801,
802) First, it is recognized that a card processing command is applied, and card control is prepared. Then, a set / reset state display command (Oxed) is further applied, and Oxa5 is received with the next data ( 803), execution of the card command is started with the command and data applied subsequently.

After processing such data for card processing from the PC by the controller 31, the response is transmitted to the PC using the scan code.

Put it between ['and'] '. As the basic control data of the card control data, there are card insertion confirmation, card data reading, data writing to the card, ID data request, and the like.
, The microprocessor 311 of the controller 31 sends the ID of the card to the card holder 33.
A read signal is applied, an ID is read from the card inserted into the card holder 33, and the read ID is provided to the microprocessor 311. The Microprocessor 311
Sets the ID data read from the card holder 33 to P
Transmit to C. At this time, the registered ID and the PC
The read card IDs are collated, and if the IDs are the same, the use of the PC is permitted. If the IDs are not the same, the use of the PC is not permitted. Control can be performed.

[0035]

As described above, the keyboard having the card reading function according to the present invention has one transmission line (PS / PS).
Since the keyboard data and the card data are transmitted using (2 lines), the control load of the PC in the data transmission control can be reduced. In addition, by using a single controller and a single communication line, the cost of the apparatus can be reduced. Further, the efficiency of the equipment installation space can be improved. Further, by applying a keyboard having a card reading function according to the present invention to a security system of a PC, it is possible to reliably perform authentication of a person in charge of a PC operation, thereby further enhancing the security of the PC system. It has excellent effects.

[Brief description of the drawings]

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

FIG. 2 is a perspective view showing an example of a keyboard embodied by the present invention.

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

FIG. 4 is a circuit configuration diagram showing the keyboard shown in FIG. 3 in detail.

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

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

FIG. 7A is a block diagram showing a configuration of a card processing command and a response word used in the keyboard according to the present invention, and FIG. 7B is a flowchart showing an execution process of the keyboard upon receiving the card command; It is.

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

[Explanation of symbols]

 31: controller 32: key matrix 33: card holder 34: clock generator 35: display unit

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G06F 3/02

Claims (11)

(57) [Claims] A key matrix for generating a key code corresponding to each key, a key matrix for generating a key code corresponding to each key, and data recorded on the inserted card by detecting whether or not the card is inserted. A card holder for reading the card holder; a clock generator for providing a clock signal for synchronizing the card holder; and operating the card holder when externally requesting a card processing command while reading a key code generated from the key matrix. A keyboard provided with a card processing function, comprising a controller for transmitting card data read by reading to a device. 2. The controller controls the operation of a card holder and a key matrix,
A microprocessor for reading a key code or card read data according to a reading order or a request from an external device; an oscillator for generating a clock signal for the microprocessor; a reset unit for initializing the microprocessor when power is initially applied; and a key. A key plate connection unit connected to a matrix for reading a key code and transmitting the key code to the microprocessor; and a P which is connected to a PC as an external device so that data can be exchanged between the PC and the microprocessor.
2. The keyboard having a card processing function according to claim 1, comprising a C connection part. 3. The controller checks whether a key code is read from a key matrix at regular intervals, and transmits a read key code to the PC while receiving a card processing command from the PC. 2. The method according to claim 1, further comprising: operating the card holder before transmitting the key code, transmitting the read card read data before transmitting the key code, and transmitting the key code before transmitting the key code. 2. A keyboard having the card processing function according to 2. 4. The controller checks for the presence of a card in a card holder,
When the card is present, the card read data is transmitted according to the request from the PC, the key matrix is checked, the generated key code is transmitted, and when the card is not present in the card holder, the card waits until the card is inserted. After the card is inserted, the card is read and the card data is transmitted, and then control is performed so as to transmit the card read data and the key code read from the key matrix in accordance with a request from the PC. A keyboard having a card processing function according to claim 1 or 2. 5. A key checking step for checking whether a key of a key matrix is pressed, and storing a key code of a pressed key read from the key matrix when pressed, and after the key checking step, a keyboard. And a command check step for checking whether there is a predetermined command from a PC connected to the PC. If there is a command transmitted from the PC in the command check step, the command is received and read, and the read command is read. An instruction processing step of executing a key code or card processing by controlling a key matrix and a card holder in accordance with the following. The key inspection is performed after it is determined that there is no instruction from the PC in the instruction checking step or the instruction processing step is completed. The step of transmitting the key code stored in the step to the PC is repeatedly performed. Keyboard control method with a card processing function. 6. The method of controlling a keyboard having a card processing function, comprising: after the key code transmission step, checking whether a card is inserted into a card holder and whether the inserted card is pulled out; 6. The method for controlling a keyboard having a card processing function according to claim 5, wherein the PC is notified of the attachment / detachment of the card. 7. The command read into 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 a keyboard command code. Item 6. A method for controlling a keyboard having a card processing function according to Item 5. 8. The command read into the keyboard is divided into a keyboard processing command and a card processing command, and when an LED set / reset state display command among the keyboard commands becomes continuous two or more times, the subsequent commands are executed. 6. The method for controlling a keyboard having a card processing function according to claim 5, wherein the data applied from the PC is recognized by the card processing command data. 9. A card check step for checking whether or not a card is present in the card holder; and when the card is present in the card check step, whether or not there is a card data request command from a PC. When there is no command, the key matrix is checked and the key code is transmitted to the PC. When there is a card data request command, the card data is read and transmitted to the PC.
In the data transmission step and the card check step, if there is no card, P
C, so that the second data transmission step of reading the data of the inserted card and transmitting it to the PC is repeatedly executed when the card is inserted. Control method of equipped keyboard. 10. A method for controlling a keyboard having a card processing function, comprising: checking whether a card reading hot key is pressed after a key code is transmitted in a first data transmission step; The method of claim 9, further comprising a second data transmission step of reading the card data and transmitting the read data to a PC. 11. A determination as to whether or not there is a card request data command is performed when an LED set / reset state display command in a keyboard command is repeated two or more times. The method of controlling a keyboard having a card processing function according to claim 9 or claim 10, wherein