KR20030008389A - Data input method and device for a computer system - Google Patents

Abstract

PURPOSE: A method for inputting data for a computer system and a device for the same are provided to enable a user to input data in a computer system easily and conveniently without using a keyboard or a writing board. CONSTITUTION: A data input device(1) is connected to a wrist of a user. A piezoelectric element(11) senses a wrist muscle movement of the user caused by a bend of a user's finger to a specific form for displaying an intended keyboard character for an input to a computer system(2), and creates a corresponding piezoelectric signal. An output electric signal from the piezoelectric element(11) is transmitted to a signal conversion unit(12). The electric signal is converted into a binary format in the signal conversion unit(12). A binary output from the signal conversion unit(12) is transmitted to a signal processing unit(13). The binary output is modulated for a transmission to the computer system(2) through a cable or a wireless connection. A memory unit(22) stores a character mapping table for mapping a keyboard character by various combinations of user finger movements. A CPU(21) searches a corresponding character from a character mapping table in the memory unit(22) by responding to a signal received from the signal processing unit(13), and displays the searched character on a monitor screen(23).

Description

Data input method and device for a computer system}

TECHNICAL FIELD The present invention relates to computer peripheral technology, and more particularly, for use with a computer system that allows a user to input input data, such as keyboard characters, including alphabetic characters, numbers, special symbols, and control codes into a computer system. A data input method and apparatus are provided.

Common data entry methods for entering data into a computer system are typically performed through a keyboard with multiple keys, each key being used to enter specific characters, such as letters, numbers, special symbols or control codes, into the computer system. do. When the key is pressed down by the user, the key activates the keyboard circuit to generate a binary signal, call a scan code and send the signal to the computer system. Inside the computer, the scan code is mapped to its corresponding keyboard character, which is then displayed on the monitor screen to complete entry of one keyboard character into the computer system. Moreover, pen-based input devices also allow a user to simply enter data into a computer system by writing the intended keyboard characters on a drawing pad, which is typically Chinese characters. Used to enter

Another type of data input method uses a sensing device shaped like a glove into which a user's hand can be inserted. The user inputs into a computer system by moving his five fingers in a specific way to activate the sensing device. To generate an electrical signal indicative of the intended keyboard character. However, one disadvantage of such glove sensing devices is the requirement for the layout of many small sensor units on the sensing device, which greatly complicates the internal circuitry of the sensing device and is ineffective in terms of manufacturing cost. Another problem with this sensing device is that it cannot be fixed, i.e., moved to a specific location on the desktop, which is inconvenient for use in portable computers when the user is traveling.

Accordingly, it is an object of the present invention to provide a data input method and apparatus that allows a user to enter data into a computer system in an easier and more convenient way without using a keyboard or writing board.

Another object of the present invention is to provide a data input method and apparatus which enables a user to input data into a computer system through finger movement.

It is a further object of the present invention to provide a data input method and apparatus which is less complicated in circuit structure and thus more cost-effective than conventional techniques.

In accordance with the above and other objects, the present invention proposes a new data input method and apparatus for inputting data into a computer system.

The data input method of the present invention; (1) predefining a set of combinations of finger movements each representing a particular character; (2) predefining a character mapping table for mapping each combination of finger movements predefined in step (1) to specific characters; (3) detecting a user's wrist muscle movement by a user's finger movement representing a keyboard character intended for input into a computer system, thereby generating a corresponding data signal; (4) transmitting the data signal to the computer system; And (5) searching through the character mapping table to find a character corresponding to the received data signal.

The above-described data input method is executed as a data input device connected to the wrist of the user. The data input device includes a piezoelectric element, a signal conversion unit and a signal processing unit. The piezoelectric element can sense a user's wrist muscle movement due to the user's finger movements representing keyboard characters intended for input into a computer system, thereby generating a corresponding electrical signal. The signal conversion unit is used to convert the output signal from the piezoelectric element into binary form. The signal processing unit then modulates the output from the signal conversion unit into a transmittable form for transmission to the computer system. Inside the computer system, the CPU searches through the character mapping table to find the keyboard characters corresponding to the signals received from the data input device, and then displays the keyboard characters on the monitor screen to display one keyboard character to the computer system. Complete the input.

Compared with the prior art, the data input method and apparatus of the present invention have the following advantages. First, the data input method and apparatus of the present invention can be used to replace a general keyboard, writing pad or glove type sensing device for inputting data into a computer system, which is more convenient to use and more effective in terms of manufacturing cost. . Second, the data input method and apparatus of the present invention allows a user to simply enter data into the computer system by bending the user's finger in a particular form representing keyboard characters intended for input into the computer system, which is easy to implement and Easy Third, the data input device of the present invention is portable, so that a user can use the device with a notebook computer while traveling.

The invention will be more fully understood by reading the following detailed description of the preferred embodiments with reference to the accompanying drawings.

1 is a schematic block diagram showing the basic hardware structure of a computer system connected to a data input device of the present invention.

FIG. 2 is a flow diagram illustrating procedural steps performed by the input device of FIG. 1 when a user enters keyboard characters into a computer system. FIG.

3 is a flow chart showing more detailed procedural steps of the flow chart of FIG.

4 is a flow chart showing more detailed procedural steps of the flow chart of FIG.

5A-5C are schematic diagrams used to illustrate the meaning of various hand digit movements in accordance with the present invention.

FIG. 6 is a schematic diagram illustrating an example of a combination of finger movements by a user to express specific keyboard characters. FIG.

7 is a table illustrating examples of mapping various combinations of finger movements to keyboard characters.

8 is a table illustrating an example of mapping various combinations of finger movements to byte values.

9 is a table illustrating an example of mapping various binary signals to keyboard characters.

10 is a flowchart illustrating detailed procedural steps for inputting keyboard characters into a computer system through the data input method and apparatus of the present invention.

1 is a schematic block diagram showing the basic hardware configuration of a computer system 2 connected to a data input device 1 of the present invention. The connection of the computer system 2 to the data input device 1 of the present invention can be made via cable connection or wireless connection. The data input device 1 of the present invention includes a piezoelectric element 11, a signal conversion unit 12, and a signal processing unit 13. The computer system 2 includes a CPU 21, a memory unit 22, and a monitor screen 23.

In use, the data input device 1 of the present invention is connected to the user's wrist in such a way as to allow the piezoelectric element 11 to be in direct contact with the skin of the wrist, so that the piezoelectric element 11 is connected to the computer system 2. It is possible to detect wrist muscle movement of the user due to bending of the user's finger in a particular form (described later in this section) representing the keyboard character intended for the input of, thereby generating a corresponding piezoelectric signal. Then, the output electrical signal from the piezoelectric element 11 is transmitted to the signal conversion unit 12, in which the electrical signal is converted into binary form. The binary output from the signal conversion unit 12 is then sent to the signal processing unit 13, where the binary output is modulated for transmission to the computer system 2 via a cable or wireless connection.

In computer system 2, memory unit 22 stores a character mapping table that maps keyboard characters with various combinations of user finger movements. In response to the signal received from the signal processing unit 13, the CPU 21 will search for the corresponding character from the character mapping table in the memory unit 22, and then display the retrieved character on the monitor screen 23. This completes inputting a character from the data input device 1 of the present invention into the computer system 2.

FIG. 2 is a flow chart showing the procedural steps performed by the data input device 1 of the present invention when a user uses the data input device 1 of the present invention for inputting data into the computer system 2.

As shown, in step 31, the data input device 1 of the present invention detects the wrist muscle movement of the user due to the finger movement of the user representing keyboard characters intended for input into the computer system 2 and , Thereby generating a corresponding electrical signal. The procedure then proceeds to step 32.

In step 32, the data input device 1 of the present invention transmits an input signal to the computer system 2. The procedure then proceeds to step 33.

In step 33, the computer system 2 searches through a predefined character mapping table of mapping of keyboard characters to various combinations of finger movements, and then retrieves corresponding keyboard characters from this character mapping table. This completes the input of the one character computer system 2 from the data input device 1 of the present invention.

3 is a flow chart showing more detailed procedural steps of the flow chart of FIG. The data input device 1 of the present invention can detect a user's wrist muscle movement due to a user's finger movement representing a keyboard character intended for input into a computer system, thereby generating a corresponding electrical signal. Keyboard characters can be alphabetic, numeric or special characters. When using the device, the user must wear the data input device 1 of the present invention on his wrist, whereby the user wrist muscle movement due to the user's finger movement is detected by the data input device 1 of the present invention. .

As shown, in step 41, the data input device 1 of the present invention detects the wrist muscle movement of the user due to the finger movement of the user representing the keyboard characters intended for input to the computer system. The procedure then proceeds to step 42.

In step 42, the data input device 1 of the present invention responds in response to sensed wrist muscle movement on a user's wrist due to a user's finger movement representing a keyboard character intended for input to the computer system 2. Generate an electrical signal. The procedure then proceeds to step 43.

In step 43, the data input device 1 of the present invention transmits its output signal to the computer system 2. The procedure then proceeds to step 44.

In step 44, in response to the input signal received from the data input device 1 of the present invention, the computer system 2 searches through a predefined character mapping table of mapping of keyboard characters for various combinations of finger movements. Then retrieve the corresponding keyboard character from this character mapping table. The procedure then proceeds to step 45.

In step 45, the computer system 2 displays the retrieved keyboard characters on the monitor screen 23. This completes the input of one keyboard character into the computer system 2.

4 is a flow diagram illustrating more detailed procedural steps of the flow chart of FIG. 3. As mentioned previously, the data input device 1 of the present invention includes a piezoelectric element 11, a signal conversion unit 12 and a signal processing unit 13. The piezoelectric element 11 can sense a user's wrist muscle movement due to a user's finger movement representing a keyboard character intended for input into a computer system, thereby providing a corresponding electrical signal that indicates the intended keyboard character. Create While using the device, the user must bring his wrist into contact with the piezoelectric element 11.

In step 51, the piezoelectric element 11 senses the wrist muscle movement of the user due to the finger movement of the user representing the keyboard characters intended for input into the computer system. The procedure then proceeds to step 52.

In step 52, the piezoelectric element 11 generates a corresponding electrical signal in response to the sensed wrist muscle movement on the user's wrist, and then transmits the generated electrical signal to the signal conversion unit 12. The procedure then proceeds to step 53.

In step 53, the signal conversion unit 12 converts the received signal into a digital form, and then transmits the digital output to the signal processing unit 13. The procedure then proceeds to step 54.

In step 54, the signal processing unit 13 modulates the output signal from the signal conversion unit 12 into a transmittable form, and then transmits the modulated signal to the computer system 2 via a cable or wireless connection. The procedure then proceeds to step 55.

In step 55, in response to the received signal, the computer system 2 searches through a predefined character mapping table to find the corresponding keyboard character. The procedure then proceeds to step 56.

In step 56, the computer system 2 displays the retrieved keyboard characters on the monitor screen 23. This step completes the input of a keyboard character into the computer system 2.

5A-5C are schematic diagrams used to explain the meaning of various hand digit movements in accordance with the present invention. According to the invention, each of the five fingers of the human hand has a first range of 0 ° to 20 ° shown in Fig. 5A (0 ° <Z <20 °), and a second range of 35 ° to 55 ° shown in Fig. 5B. Can be bent at three ranges of angles including (35 ° <Z <55 °) and the third range (70 ° <Z <90 °) shown in Figure 5C (70 ° <Z <90 °). In Figure 5C, Z represents the angle between each finger and the desktop.)

The undefined angular range of 21 ° to 34 ° and 56 ° to 69 ° is a nonfunctional range in which no movement occurs by the bending of the finger. In this way, the present invention defines three levels of data by defining each finger, and thus can represent 3 ⁵ = 243 total data levels by bending five fingers of one hand. A typical computer keyboard generally contains only about 100 keys or is somewhat fewer or more, so that all keyboard characters on the computer keyboard can be triggered by a combination of finger movements according to the present invention.

FIG. 6 is a schematic diagram illustrating an example of a combination of finger movements by a user to express specific keyboard characters.

A ( n ) represents the angle range of the currently bent thumb, where n is 1, 2 or 3; B ( n ) represents the angular range of the currently indexed index finger, where n is 1, 2 or 3; C ( n ) represents the angular range of the current bent finger, where n is 1, 2 or 3; D ( n ) represents the angular range of the finger that is currently bent, where n is 1, 2 or 3; And assume that E ( n ) represents the angle range of the currently bent pinky finger, where n is 1, 2 or 3.

Thus, when the user bends his thumb, index finger, middle finger, weak finger and little finger at angles of 10 °, 45 °, 80 °, 85 ° and 15 °, respectively, this is [A (1), B (2), C (3), D (3), and E (1)]. By means of a predefined character mapping table, this combination of finger movements is mapped to specific keyboard characters. Thus, by bending the user's own five fingers to the corresponding combination of angles, each keyboard character on the computer keyboard can be simply entered into the computer system by the user.

7 is a table illustrating an example of mapping various combinations of finger movements to keyboard characters. As shown, a combination of finger movements [A (1), B (1), C (1), D (1), E (2)] is assigned to represent the numeric character "1" and [A (1), B (1), C (1), D (1), E (3)] are assigned to represent the numeric character "2", and [A (1), B (1), C ( 1), D (2), E (1)] are assigned to represent the numeric character "3", [A (1), B (1), C (1), D (2), E (2). )] Is assigned to represent the numeric character "4", and [A (1), B (1), C (1), D (2), E (3)] represents the numeric character "5". [A (1), B (1), C (1), D (3), E (2)] are assigned to represent the numeric character "6", and [A (1), B (1), C (1), D (3), E (2)] are assigned to represent the numeric character "7", [A (1), B (1), C (1), D ( 3), E (3)] is assigned to represent the numeric character "8", and [A (1), B (1), C (2), D (1), and E (1)] are numeric characters. Is assigned to represent "9", and [A (1), B (1), C (2), D (1), E (2)] is assigned to represent the numeric character "0". Based on this character mapping table, when the user wants to enter a specific numeric character, for example "5", the user only needs to touch the five fingers of the hand supporting the data input device of the present invention [A (1), B (1), C (1), D (2), E (3)] need to bend in the form of a combination of finger movements; That is, bending the thumb within the (1) angular range; Bending the index finger into a first angle range; Bending the middle finger into the (1) angular range; Bending the finger within the second (2) angular range; And the little finger is bent into the (3) angular range. The data input device of the present invention can sense these finger movements and thereby generate a corresponding electrical signal representing the intended numeric character "5".

8 is a table illustrating an example of mapping various combinations of finger movements to byte values. As shown, the combination of finger movements [A (1), B (1), C (1), D (1), E (2)] is assigned to represent the byte value "00000001"; [A (1), B (1), C (1), D (1), E (3)] are allocated to represent the byte value "00000010"; [A (1), B (1), C (1), D (2), E (1)] are allocated to represent the byte value "00000100"; [A (1), B (1), C (1), D (2), E (2)] are allocated to represent the byte value "00001000"; [A (1), B (1), C (1), D (2), E (3)] are allocated to represent the byte value "00010000"; [A (1), B (1), C (1), D (3), E (1)] are allocated to represent the byte value "00100000"; [A (1), B (1), C (1), D (3), E (2)] are allocated to represent the byte value "01000000"; [A (1), B (1), C (1), D (3), E (3)] are allocated to represent the byte value "10000000"; [A (1), B (1), C (2), D (1), E (1)] are allocated to represent the byte value "10000001"; And [A (1), B (1), C (2), D (1), E (2)] are allocated to represent the byte value "10000010". Based on the character mapping table of FIG. 8, for example, [A (1), B (1), C (1), D (1), E (2)], the user has his or her own five. When the finger is bent, the data input device of the present invention is activated to generate a binary signal "00000001" and transmit this signal to the computer system 2.

9 is a table showing an example of mapping various binary signals to keyboard characters, which are stored in the memory unit 22 in the computer system 2. As shown, this character mapping table indicates the following: When a binary signal "000000001" is received, it inputs the numeric character "1" from the data input device 1 of the present invention to the computer system 2. Represent; When the binary signal "00000001" is received, it represents the input of the numeric character "1" from the data input device 1 of the present invention to the computer system 2; When the binary signal "00000010" is received, it represents the input of the numeric character "2" from the data input device 1 of the present invention to the computer system 2; When the binary signal "00000100" is received, it represents the input of the numeric character "3" from the data input device 1 of the present invention to the computer system 2; When the binary signal "00001000" is received, it represents the input of the numeric character "4" from the data input device 1 of the present invention to the computer system 2; When the binary signal "00010000" is received, it represents the input of the numeric character "5" from the data input device 1 of the present invention to the computer system 2; When the binary signal "00100000" is received, it represents the input of the numeric character "6" from the data input device 1 of the present invention to the computer system 2; When the binary signal "01000000" is received, it represents the input of the numeric character "7" from the data input device 1 of the present invention to the computer system 2; When the binary signal "10000000" is received, it represents the input of the numeric character "8" from the data input device 1 of the present invention to the computer system 2; When the binary signal "10000001" is received, it represents the input of the numeric character "9" from the data input device 1 of the present invention to the computer system 2; and when the binary signal "10000010" is received, The input of the numeric character "0" to the computer system 2 from the data input device 1 of the present invention is shown. After the CPU 21 retrieves the corresponding keyboard character from the memory unit 22, the retrieved keyboard character is displayed on the monitor screen 23.

10 is a flowchart illustrating detailed procedural steps for inputting keyboard characters into a computer system through the data input method and apparatus of the present invention. In use, the data input device 1 of the present invention is connected to the user's wrist, so that the data input device can detect wrist muscle movement when the user bends his five fingers. Assuming a user enters numeric data "1" into computer system 2, the following procedural steps are then performed.

In step 61, the data input device 1 of the present invention is connected to the user's wrist in a manner to allow the piezoelectric element 11 to be in direct contact with the user's wrist. The procedure then proceeds to step 62.

In step 62, the user selects his or her own way of giving [A (1), B (1), C (1), D (1), E (2)] for the purpose of inputting the numeric data "1". It can be seen from the character mapping table of FIG. When this step is executed, the piezoelectric element 11 in the data input device 1 of the present invention indicates [A (1), B (1), C (1), D (1), E (2)]. The user's wrist muscle movement is detected by bending the user's five fingers to make a bet. In response, the piezoelectric element 11 will generate a corresponding electrical signal and transmit the signal to the signal conversion unit 12. The procedure then proceeds to step 63.

In step 63, the signal conversion unit 12 corresponds to a signal received from the piezoelectric element 11 with [A (1), B (1), C (1), D (1), E (2)]. The binary signal is converted into "00000001", and then the binary signal is transmitted to the signal processing unit 13. The procedure then proceeds to step 64.

In step 64, the signal processing unit 13 modulates the output binary signal " 00000001 " from the signal conversion unit 12 into a transmittable form and then transmits the modulated signal to the computer system 2 via a cable or wireless connection. do. The procedure then proceeds to step 65.

In step 65, upon receiving [A (1), B (1), C (1), D (1), E (2)] from the data input device 1 of the present invention], the computer system 2 Will search through the character mapping table shown in FIG. 9 (which is pre-stored in the memory unit 22) to find the keyboard character corresponding to " 00000001 " (in this case, the numeric character " 1 " And retrieved). The procedure then proceeds to step 66.

In step 66, the CPU 21 displays the numeric character “1” on the monitor screen 23. This completes the input of one keyboard character into the computer system 2.

In conclusion, the present invention provides a novel data input method and apparatus for allowing a user to enter data into a computer system by bending the user's finger in a particular form representing a keyboard character intended for input into the computer system. The five-finger bending of the user will cause movement of the wrist muscles, which can be sensed by piezoelectric elements in the data input device of the present invention. In response, the piezoelectric element generates a corresponding electrical signal, which is then converted into binary form and transmitted to the computer system via a cable or wireless connection. Inside the computer system, the CPU searches through a predefined character mapping table to find a character corresponding to a signal received from the data input device, and then displays the retrieved character on a monitor screen, Complete the input of keyboard characters.

The data input method and apparatus of the present invention have the following advantages over the prior art.

First, the data input method and apparatus of the present invention can be used to replace a general keyboard, writing pad or glove type sensing device for inputting data into a computer system, which is more convenient to use and in terms of manufacturing cost. More effective at

Second, the data input method and apparatus of the present invention allows a user to simply enter data into the computer system by bending the user's finger in a particular form representing keyboard characters intended for input into the computer system, which is easy to implement and Easy

Third, the data input device of the present invention is portable, thus allowing a user to use it with a notebook computer when traveling.

The present invention has been described using exemplary preferred embodiments. However, it will be understood that the scope of the present invention is not limited to the disclosed embodiments. On the contrary, it is intended to cover devices similar to the various variations. Therefore, the claims should follow the most comprehensive description to encompass all such variations and similar arrangements.

Claims (19)

(1) predefining a set of combinations of finger movements each representing a particular character; (2) predefining a sentence mapping table for mapping each set of predefined finger movements to a specific character in step (1); (3) detecting the wrist muscle movement of the user by the movement of the user's finger representing the keyboard character intended for input into the computer system, thereby generating a corresponding data signal; (4) transmitting the data signal to the computer system; And (5) a data input method for use with the computer system for inputting user data into the computer system, comprising searching through a character mapping table to find a character corresponding to the received data signal. The method of claim 1, wherein in step (1), the wrist muscle movement of the user is sensed by a data input device connected to the user's wrist. The data input method according to claim 2, wherein the data input device comprises a piezoelectric element, a signal conversion unit, and a signal processing unit. 4. The piezoelectric element of claim 3, wherein the piezoelectric element is attached to a user's wrist and senses wrist muscle movement by movement of a user's finger representing a keyboard character intended for input into a computer system, thereby generating a corresponding electrical signal. Input method. The data input method according to claim 3, wherein the signal conversion unit is connected to the piezoelectric element to convert the output signal of the piezoelectric element into a data signal. 6. The data input method according to claim 5, wherein the data signal is a digital signal. 6. The data input method according to claim 5, wherein the data signal is an analog signal. 4. A data input method according to claim 3, wherein the signal processing unit is connected to the signal conversion unit and is capable of modulating the data signal into a transmission-capable form for transmission to a computer system. The method of claim 1, further comprising displaying data corresponding to the received data signal on a monitor screen. (1) connecting a sensing device to a user's wrist, the sensing device capable of sensing muscle movement of the wrist and thereby generating a corresponding electrical signal; (2) detecting a wrist muscle movement of the user to generate a corresponding data signal; (3) transmitting the data signal to the computer system; (4) operating the computer system to find data corresponding to the received data signal and searching through a mapping table; And (5) Displaying data corresponding to the received data signal on a monitor screen, the data input method for use for data input into a computer system. The data input method according to claim 10, wherein the sensing device comprises a piezoelectric element, a signal conversion unit, and a signal processing unit. 12. The device of claim 11, wherein the piezoelectric element is attached to a user's wrist and senses wrist muscle movement by movement of a user's finger representing a keyboard character intended for input into a computer system, thereby generating a corresponding electrical signal. Input method. The data input method according to claim 11, wherein the signal conversion unit is connected to the piezoelectric element to convert the output signal of the piezoelectric element into a data signal. The data input method according to claim 13, wherein the data signal is a digital signal. The data input method according to claim 13, wherein the data signal is an analog signal. 12. The data input method according to claim 11, wherein the signal processing unit is connected to the signal conversion unit and is capable of modulating the data signal into a transferable form for transmission to a computer system. A data input method for use with a sensing device comprising a piezoelectric element, a signal conversion unit and a signal processing unit for inputting data into a computer system, the method comprising: (1) connecting a sensing device capable of sensing movement of the wrist muscle to the wrist of the user, thereby generating a corresponding electrical signal; (2) actuating the piezoelectric element to sense the wrist muscle movement of the user by the movement of the user's finger representing the keyboard character intended for input into the computer system, whereby the piezoelectric element generates a corresponding electrical signal; (3) operating the signal conversion unit to convert the electrical signal into a data signal; (4) actuating the signal processing unit to modulate the data signal for transmission to a computer system; (5) operating the computer system to search through the character mapping table to find data corresponding to the received data signal; And (6) A data input method for use for data input into a computer system, comprising displaying data corresponding to the received data signal on a monitor screen. A data input device for use for data input into a computer system, comprising: A piezoelectric element coupled to a user's wrist and capable of sensing wrist muscle movement to generate a corresponding electrical signal representing a computer code intended for input into a computer system; A signal conversion unit connected to the piezoelectric element and capable of converting an electrical signal from the piezoelectric element into a data signal; And And a signal processing unit coupled to the signal conversion unit, the signal processing unit capable of modulating a data signal for transmission to a computer system. A data input device for use for data input into a computer system, comprising: A piezoelectric element coupled to a user's wrist and capable of sensing wrist muscle movement to generate a corresponding electrical signal representing a computer code intended for input into a computer system; A signal conversion unit connected to the piezoelectric element and capable of converting an electrical signal from the piezoelectric element into a data signal; A signal processing unit connected to the signal conversion unit and capable of modulating a data signal for transmission to a computer system; And A data input device provided in a computer system, comprising mapping means for finding computer code corresponding to a data signal received from a signal processing unit.