KR20040051477A - Method for transmitting and receiving the data of wireless keyboard - Google Patents

Abstract

PURPOSE: A method for transmitting/receiving the data of a wireless keyboard is provided to offer the varied data changed by an input key, the inverted data of the varied data, and the fixed data based on a new protocol. CONSTITUTION: The keyboard data comprises the first to the third byte. The first byte including a special bit having a reader of a fixed bit, the state information of a function switch key, and the inverted bit of the special bit is generated by pushing or releasing a key(S45). The second byte including a make/brake bit informing a push state of the key and a scan code matched with the pushed or released key(S48). The third byte that is the make/brake bit of the second byte and the inverted data of the scan code is generated(S51). The generated keyboard data is wirelessly transmitted(S52).

Description

TECHNICAL FOR TRANSMITTING AND RECEIVING THE DATA OF WIRELESS KEYBOARD}

The present invention relates to a method for transmitting and receiving wireless keyboard data, and in particular, based on a new protocol, by providing inverted data and fixed data of the variation data along with the variation data that changes with the input key. There is no need to allocate separate bits for checksums, it is possible to accurately identify data errors, and to keep battery consumption to a minimum regardless of the modulation method, and to increase the data size without increasing the data size. The present invention relates to a wireless keyboard data transmission and reception method for adding a function conversion key.

In general, in the communication protocol of a wireless keyboard such as IR (InfraRed) or RF (Radio Frequency), the most commonly used methods are 4PPM (Pulse Position Modulator), PWM (Pulse Width Modulator) and simple PULSE. There are two methods, including the simple pulse method, and the PWM method expresses logic '0' or '1' as the width of the pulse, so the width of the pulse changes according to the data code. Thus, the logic '0' or ' Due to the change in the pulse width to represent 1 ', the size of the data may be increased in some cases, which requires a lot of power consumption. Therefore, there is a disadvantage in that the consumption of the battery can not be kept to a minimum.

In order to solve this disadvantage, a 4PPM method that represents logic '0' or '1' can be used as the location of pulse generation. In the protocol using the 4PPM method, each of the 4PPM methods can be used to prevent transmission error of the keyboard function conversion key. When the keyboard data is transmitted with a plurality of special bits corresponding to the function conversion key, when the keyboard data is transmitted at the same time, and when a data transmission error occurs during data transmission, the next pressed key data is transmitted. Compensation for transmission error by giving information of pressed and released function change key. One example of such a conventional 4PPM wireless keyboard data transmission method will be described.

FIG. 1 is a schematic block diagram of a conventional wireless keyboard. Referring to FIG. 1, a conventional wireless keyboard 1 is composed of a microprocessor 11, a key matrix 13, and a transmitter 15, in which the micro The processor 11 applies a scanning signal to the key matrix 13 to search for a pressed or released key among the keys of the key matrix 13 and transmit the keyboard data including the scan code of the corresponding key to the transmitter 15. It transmits to the personal computer 3 via the computer.

FIG. 2 is a structural diagram of data according to a keyboard data transmission method using a 4PPM protocol of a conventional wireless keyboard. Referring to FIG. 2, when a plurality of conventional personal computers 3 and a wireless keyboard 1 are connected, a channel is used. The area for ID data is allocated. Also, when separate window keys are configured on the keyboard, a window key flag area for these keys is allocated. That is, as shown in FIG. 2, the keyboard data of the conventional system is composed of a total of 32 bits, that is, a total of 4 bytes (B1, B2, B3, B4), and 5 in the first first byte B1 of the keyboard data. Bit (Bit7, Bit6, Bit5, Bit4, Bit3) corresponds to the ID of the keyboard (1).

This ID information is information for recognizing keyboard data among data from such a wireless device since a mouse or a remote controller can be used as an input means. At this time, the eighth bit Bit7 may be assigned a reader for notifying transmission of the keyboard data. As described above, the data corresponding to the window keys is allocated to the remaining three bits Bit2, Bit1, and Bit0 in the first byte B1. Here, status information of the left and right window keys is allocated to the first and second bits Bit0 and Bit1, and fourth bits Bit3 are allocated as reserved bits for the assignment of the window key.

The next second byte B2 is data indicating that the function conversion key is pressed, and as shown in FIG. 2, the eighth bit Bit7 is allocated for making and breaking flags of the function conversion keys, The 1st-7th bits Bit0-Bit6 are allocated as flag bits of each function conversion key.

The next third byte B3 is assigned a key code corresponding to a scan code assigned to each key. Here, the third byte B3 includes a make and break code of the corresponding key.

A channel ID is assigned to the fifth to eighth bits Bit4-Bit7 of the next fourth byte B4, and a check is made to check a transmission error of keyboard data in the first to fourth bits Bit0-Bit3. Check sum information is allocated. The channel ID is channel information for identifying a wireless keyboard when a plurality of wireless keyboards are used.

On the other hand, when the user actually combines the function conversion key and the general key, the function conversion key and the general key are compared to the "2 + 1" method or the "3 + 1" method, which combines the two function conversion keys and one general key. Most of the "1 + 1" methods are used one by one.

However, in the conventional method of allocating a special bit for each function conversion key, a function conversion key data field having as many bits as the number of function conversion keys must be allocated. The size of the (DATA FIELD) is increased, and accordingly, the size of the keyboard data is increased, and this increase in data size increases the power consumption, and additionally for checking transmission errors. There is also a problem that the size of the data increases accordingly because a checksum code of.

In addition, since the size of the keyboard data increases when the function conversion key is added, its efficiency is lowered. In the case where the function conversion key is continuously added in the future, the data field DATA field must be continuously increased.

SUMMARY OF THE INVENTION The present invention has been proposed to solve the above problems, and an object of the present invention is to invert the inverted data and the fixed data of the variation data together with the variation data according to the input key based on the new protocol. The present invention provides a wireless keyboard data transmission and reception method.

Another object of the present invention is to provide a wireless keyboard data transmission and reception method which does not need to separately allocate bits for a checksum and can accurately identify data errors.

In addition, another object of the present invention is to maintain a minimum battery consumption irrespective of the modulation scheme, and to transmit and receive wireless keyboard data to add a separate function conversion key without increasing the data size (DATA SIZE) To provide a method.

1 is a schematic block diagram of a conventional wireless keyboard.

2 is a structural diagram of data according to a keyboard data transmission method of a conventional wireless keyboard.

3 is a block diagram of a wireless keyboard data transmission apparatus for carrying out the present invention.

4 is a flowchart showing a method for transmitting wireless keyboard data according to the present invention.

5 is a structural diagram of wireless keyboard data according to the present invention.

6 is a structural diagram of a wireless keyboard data packet according to the present invention.

7 is a block diagram of a wireless keyboard data receiving apparatus for carrying out the present invention.

8 is a flowchart showing a method for receiving wireless keyboard data according to the present invention.

Explanation of symbols on the main parts of the drawings

31: power supply unit 32: key matrix

33: main transmission control unit 34: wireless transmission unit

61: wireless receiving unit 62: main receiving control unit

63: transmission status display unit 70: host computer

As a technical means for achieving the above object of the present invention, the first feature of the present invention is

In the keyboard data transmission method between a wireless keyboard and a computer having a plurality of general keys and function conversion keys,

Fixed data including a lead for transmission of keyboard data, a special bit having 1 bit indicating whether a function conversion key is pressed, a make / break bit indicating whether a key is pressed, according to whether a key is pressed or released; Generating keyboard data including scan data corresponding to a pressed or depressed key and inverted data inverting the change data; And

Wirelessly transmitting the generated keyboard data

It is to provide a wireless keyboard data transmission method having a.

In addition, the second aspect of the present invention

In the keyboard data receiving method between a wireless keyboard and a computer having a plurality of general keys and function conversion keys,

Fixed data including a lead for transmission of keyboard data, a special bit having 1 bit indicating whether a function conversion key has been pressed, a make / break bit indicating whether a key has been pressed, a key corresponding to a pressed or released key Receiving and processing variation data including a scan code and keyboard data including inverted data inverting the variation data; And

Processing an operation corresponding to the received keyboard data;

It is to provide a wireless keyboard data receiving method having a.

In addition, the first and second features of the present invention may be combined with one another to provide another feature.

Hereinafter, a wireless keyboard data transmission and reception method according to the present invention will be described in detail with reference to the accompanying drawings.

3 is a block diagram of a wireless keyboard data transmission apparatus for carrying out the present invention. Referring to FIG. 3, a wireless keyboard data transmission apparatus for carrying out the present invention includes a power supply unit 31 for supplying power required for a keyboard; When the key is pressed or released, the key matrix 32 for key input and power are supplied from the power supply unit 31 to operate, thereby recognizing the press or release of the key of the key matrix 32. And a main transmission control unit 33 for controlling wireless transmission of keyboard data corresponding thereto, and a wireless transmission unit 34 for converting data into a wireless signal and transmitting the data wirelessly under the control of the main transmission control unit 33. do. Under the control of the main transmission control unit 33, a wireless keyboard data transmission process according to the present invention is performed as follows.

4 is a flowchart illustrating a wireless keyboard data transmission method according to the present invention. Referring to FIG. 4, the data wireless transmission unit generates data and wirelessly transmits data to the wireless reception unit. Same as

The wireless keyboard data transmission method according to the present invention is a keyboard data transmission method between a wireless keyboard having a plurality of general keys and a function conversion key and a computer, wherein the lead means transmission of keyboard data in response to a key being pressed or released. Variable data including a fixed data to be included, a special bit having 1 bit indicating whether the function conversion key has been pressed, a make / break bit indicating whether the key has been pressed, and a scan code corresponding to the pressed or depressed key; And generating keyboard data including the inverted data inverting the variation data, and wirelessly transmitting the generated keyboard data.

The fixed data includes a reader for transmission of keyboard data, and the change data includes a special bit indicating whether a function conversion key is pressed, a make / break bit indicating whether a key is pressed, and a pressed or depressed key. And a scancode corresponding to a key, wherein the inverted data includes the special bits, make / break bits, and respective inverted data for the scancode included in the variation data. Here, the fixed data includes a reader for notifying the transmission of the keyboard data, and may further include channel information according to the applied product or the use environment.

A first byte of the keyboard data to be received includes the reader, a special bit, and an inverted bit of the special bit, the second byte includes a make / break bit and a scan code, and the third byte is the Include inverted data for the make / break bit and scancode of the second byte.

In addition, the special bit and the inverted bit of the special bit according to the present invention are allocated to one bit (1 bit), unlike the conventional art, which is assigned to each function converter. Therefore, even with the addition of the function converter, there is no increase in the special bits, and thus the size of the keyboard data does not increase.

First, as shown in FIG. 5, in the generating of the first byte of the keyboard data generating step (S41-S45), a fixed-byte reader (L) indicating transmission of the keyboard data in response to a key being pressed or released. ), A special byte (SP) having one bit indicating whether the function conversion key is pressed, and a first byte (B1) including an inverted bit (-SP) of the special bit.

In addition, the first byte B1 includes an inverted bit (-SP) of a special bit, which is used to ensure a transmission error check of the special bit (SP). Inverted bits of bits are preferably assigned to 1 bit each in consideration of the size of keyboard data. Here, the special bit SP is set ('1') when the function conversion key (usually a function key) is made, and cleared ('0') when the function conversion key is broken.

In the generating of the second byte (S46-S48), a make / break bit (M / B) indicating whether a key is pressed and a scan code (SCD) corresponding to the pressed or released key are generated. Generates a second byte B2 comprising the make / break bit (M / B) and a scan code (SCD), wherein this step sets the make / break bit (M / B) when a keypress is selected (' 1 '), and when the key is released, the make / break bit (M / B) is cleared (' 0 '), and the second byte including the make / break bit (M / B) and the scan code (SCD) (B2) is generated. The first byte B1 and the second byte B2 thus generated are stored in a buffer before being transmitted.

In operation S49 to S51, a third byte including each make / break bit M / B of the second byte B2 and each inverted data of the scan code SCD is generated. B3), which will be described in detail. First, it is checked whether the keyboard data is currently being transmitted and proceeds to the step of generating the first byte if it is being transmitted. Take inverted data for the make / break bit (M / B) and scan code (SCD) of the stored second byte (B2), and then inverted make / break bit (-M / B) And a third byte B3 including the inverted scan code (-SCD).

Next, in the transmitting of the keyboard data (S52-S53), the keyboard data including the generated first-third bytes B1, B2, and B3 are converted into a wireless signal and transmitted. A parity bit is added to each byte of keyboard data to be transmitted, and a start bit (ST) and an end bit (STP) are added to distinguish each byte included in the keyboard data before and after each byte.

In the converting of the data into a wireless signal and transmitting the converted data, the keyboard data including the generated first to third bytes may be converted into a wireless signal in a packet unit and transmitted.

5 is a structural diagram of wireless keyboard data according to the present invention, wherein the data of the present invention includes a first byte (B1), a second byte (B2), and a third byte (B3), each of which has a start bit ( ST), the parity bit (P) and the end bit (STP) may include in common. The first byte B1 includes a reader L for keyboard data transmission, a special bit indicating whether the function conversion key is pressed, and an inverted bit (-SP) of the special bit. Byte B2 includes a make / break bit M / B indicating whether the key is pressed, scan data SCD corresponding to the pressed or released key, and the third byte B3 is Complement value of make / break bit (M / B) and scan code (SCD) of second byte (B2), that is, inverted bit (-M / B) of make / break bit and inverted code (- SCD).

As described above, when the make / break bit (M / B) and scan code (SCD) of the second byte included in the keyboard data of the present invention are taken as complementary values, the make / break bit (M /) of the third byte is obtained. Since it is the same as the inverted data of B) and the scan code SCD, by using these second and third bytes, transmission errors can be checked without having to assign a separate checksum code.

In addition, the keyboard data including the first byte B1, the second byte B2, and the third byte B3 as described above may be converted into a wireless signal, for example, an IR signal or an RF signal, and transmitted wirelessly. have.

In order to keep the packet of the keyboard data according to the present invention at the minimum size, the packet structure of the keyboard data of the present invention is the same as the data packet structure shown in FIG.

6 is a structural diagram of a wireless keyboard data packet according to the present invention. Referring to FIG. 6, the size of each packet of the keyboard data of the present invention is set to approximately 23 msec, the interval between packets is set to approximately 77 msec, and Each byte in each packet consists of 11 bits, and the size of each bit is set to approximately 696.9 s.

7 is a configuration diagram of a wireless keyboard data receiving apparatus for carrying out the present invention. Referring to FIG. 7, the wireless keyboard data receiving apparatus for carrying out the present invention includes a wireless receiving unit for wirelessly receiving keyboard data transmitted wirelessly. 61, the main reception control unit 62 for controlling the operation corresponding to the keyboard data received by the wireless reception unit 61, and the transmission state of the keyboard data under the control of the main reception control unit 62; And a transmission status display section 63 for displaying. According to the control of the main reception control unit 62, the wireless keyboard data reception process of the present invention is performed.

Hereinafter, a method for receiving wireless keyboard data according to the present invention will be described.

FIG. 8 is a flowchart illustrating a method for receiving wireless keyboard data according to the present invention. Referring to FIG. 8, the wireless receiver performing the present invention wirelessly receives data transmitted from a data wireless transmitter, which will be described in detail. Is as follows.

In the wireless keyboard data receiving method according to the present invention, in the keyboard data receiving method between a wireless keyboard and a computer having a plurality of general keys and function conversion keys, the fixed data including a lead indicating the transmission of the keyboard data and the function conversion key Variation data including a special bit having 1 bit indicating whether or not the key is pressed, a make / break bit indicating whether the key is pressed, a scan code corresponding to the pressed or released key, and inverted data inverting the change data. The wireless keyboard data receiving apparatus receives and processes the keyboard data including the received keyboard data, and processes the operation corresponding to the received keyboard data.

The fixed data among the received data includes a reader for transmitting keyboard data, and the change data includes a special bit indicating whether a function conversion key is pressed, a make / break bit indicating whether a key is pressed, and a press or release And a scancode corresponding to the key, wherein the inverted data includes inverted data for each of the special bit, make / break bit, and scancode. In particular, the special bit and the inverted bit of the special bit are allocated to 1 bit, respectively.

The received keyboard data includes first to third bytes, the first byte including a reader, a special bit, and an inverted bit of the special bit, and the second byte includes a make / break bit and a scan code. Wherein the third byte includes the make / break bit of the second byte and the inverted data of the scan code. In addition, each byte of the keyboard data includes a parity bit, a start bit and an end bit added before and after.

First, in the step of receiving keyboard data (S71-S73), the main reception control unit 62 receives the first byte B1, the second byte B2, and the wireless reception unit 61 of the wireless keyboard data receiving device. The keyboard data including the third byte B3 is wirelessly received, which will be described in detail. First, the received wireless signal is restored to the original keyboard data, and the first to the first data contained in the restored data are restored. The three bytes are recognized as the start bit ST and the end bit STP, respectively. Then, it is determined whether the keyboard data is based on the reader L of the first byte B1. In the case of keyboard data, keyboard data including a first byte B1, a second byte B2, and a third byte B3 is received.

In the step (S74) of checking the transmission error, the transmission error is checked based on the second byte B2 and the third byte B3 of the keyboard data. Specifically, the transmission error is first included in the keyboard data. The transmission error of each byte is checked using the parity bit P in each byte. Then, the make / break bit of the second byte B2 and the inverted data of the scan code are made of the third byte B3. Check the transmission error whether it is the same as the brake bit and the scan code. If there is a transmission error in the transmission error check process, the received keyboard data is ignored, and if there is no transmission error, the process proceeds to the next step.

In operation S75, it is determined whether a make or a break is based on the make / break bit M / B included in the second byte B2 of the received data. When the make / break bit M / B of 2 bytes B2 is set ('1'), it is determined as a make, and when the make / break bit is cleared ('0'), it is determined as a break.

In the case of making a make code (S77a to S77c), in the case of a make, it is determined whether it is a function conversion key based on the special bit SP included in the first byte B1. After the (SP) is set, a make code is generated. In this step, when the special bit SP of the first byte B1 is set, it is recognized as a function conversion key, and when the special bit is cleared, it is recognized as a general key. .

Next, in the step (S76a-S76c) of generating a break code, in the case of a break, it is determined whether the function is a function conversion key based on the special bit included in the first byte. A break code is generated, which is recognized as a function conversion key when the special bit of the first byte is set, and as a general key when the special bit is cleared.

Finally, in the processing of the corresponding operation according to the data code (S78-81), the corresponding operation is processed according to the special bit, the make code, the break code, and the data code. And temporarily storing the make code and the break code generated in each step of generating the break code in a buffer, and then processing the command of the host if there is a host command, and, if there is no host command, the special bit, the make code, or Process the operation according to the break code and data code.

According to the present invention as described above, based on the new protocol, by providing the inverted data and fixed data of the variation data along with the variation data according to the input key, for the checksum There is no need to allocate bits separately, it is possible to accurately identify data errors, and inverted data of the variation data together with the variation data can be used to keep battery consumption to a minimum regardless of the modulation method. It is effective to add additional function conversion key without increasing DATA SIZE).

That is, according to the present invention, the battery consumption can be kept to a minimum by using any modulation scheme without using the conventional 4PPM, and the data size is constant because the function field does not change even when the function conversion key is continuously extended. We propose a new communication protocol that keeps the data in a stable state, and according to the new protocol, the inverter data is always assigned to the part of the data change except for the fixed bit, thereby minimizing the battery consumption and maintaining the data size. Keep it constant. Inverted data exists for each data, so it is possible to accurately read the error status of the data without the need for a separate checksum, and even if the function conversion key is expanded by giving only one bit of the function conversion key. The advantage is that the size does not change in the future.

The above description is only a description of specific embodiments of the present invention, and the present invention is not limited to these specific embodiments, and various changes and modifications of the configuration are possible from the above-described specific embodiments of the present invention. It will be apparent to those skilled in the art to which the present invention pertains.

Claims (17)

In the keyboard data transmission method between a wireless keyboard and a computer having a plurality of general keys and function conversion keys, Fixed data including a lead for transmission of keyboard data, a special bit having 1 bit indicating whether a function conversion key is pressed, a make / break bit indicating whether a key is pressed, according to whether a key is pressed or released; Generating keyboard data including scan data corresponding to a pressed or depressed key and inverted data inverting the change data; And Wirelessly transmitting the generated keyboard data Wireless keyboard data transmission method comprising the. The method of claim 1, wherein generating the keyboard data The keyboard data includes first to third bytes, and includes a reader of a fixed bit, a special bit having state information of a function conversion key, and an inverted bit of the special bit according to a key being pressed or released. Generating 1 byte; Generating a second byte including a make / break bit indicating whether a key is pressed and a scan code corresponding to the pressed or depressed key; And Generating a third byte which is the make / break bit of the second byte and the inverted data of the scan code Wireless keyboard data transmission method comprising the. The method of claim 2, wherein generating the first byte A special bit is set when a preset function change key is made, and the special bit is cleared when the function change key is broken. The method of claim 2, wherein the wireless transmission step of the keyboard data Adding a parity bit to each byte of keyboard data to be transferred, and adding a start bit and an end bit before and after each of these bytes; And Wirelessly transmitting the keyboard data Wireless keyboard data transmission method comprising a. The method of claim 4, wherein the wireless transmission step of the keyboard data And transmitting and converting the keyboard data including the generated first to third bytes into a wireless signal in a packet unit. The method of claim 5, wherein the size of each packet of the keyboard data is set to approximately 23 msec. A wireless keyboard data transmission method, characterized in that the interval between each packet is set to approximately 77msec. 7. The method of claim 6, wherein each byte in each packet consists of 11 bits, The size of each bit is set to approximately 696.9μs wireless keyboard data transmission method. In the keyboard data receiving method between a wireless keyboard and a computer having a plurality of general keys and function conversion keys, Fixed data including a lead for transmission of keyboard data, a special bit having 1 bit indicating whether a function conversion key has been pressed, a make / break bit indicating whether a key has been pressed, a key corresponding to a pressed or released key Receiving and processing variation data including a scan code and keyboard data including inverted data inverting the variation data; And Processing an operation corresponding to the received keyboard data; Wireless keyboard data receiving method comprising the. The apparatus of claim 8, wherein the keyboard data includes first to third bytes, The first byte of the keyboard data includes a reader, a special bit, an inverted bit of the special bit, The second byte includes a make / break bit and a scan code; And the third byte comprises inverted data for the make / break bit and the scan code of the second byte. 10. The method of claim 9, wherein each byte of keyboard data is A wireless keyboard data transmission method further comprising a parity bit, a start bit and an end bit added before and after. The method of claim 10, wherein the receiving and processing of the keyboard data comprises: Wirelessly receiving keyboard data including the first to third bytes; Checking a transmission error based on the second byte and the third byte of data; Determining whether a make or a break is based on the make / break bit included in the second byte; In the case of a make, determining whether it is a function conversion key based on the special bit of the first byte, and in the case of a function conversion key, generating a make code after setting a special bit; And In the case of a break, determining whether it is a function conversion key on the basis of the special bit of the first byte, and in case of the break, clearing the special bit and generating a break code Wireless keyboard data receiving method comprising a. The method of claim 8, wherein the processing of the operation corresponding to the received keyboard data comprises: And a corresponding operation according to the special bit, make code or break code, and scan code. The method of claim 11, wherein receiving the keyboard data comprises: Restoring original keyboard data from the received radio signal; Recognizing first through third bytes included in the restored keyboard data through the start bit and the end bit; Determining whether the keyboard data is keyboard data based on the reader of the first byte; And In the case of keyboard data, receiving keyboard data including the first to third bytes. Wireless keyboard data receiving method comprising a. The method of claim 11, wherein the checking of the transmission error Checking a transmission error of each byte using parity bits in each byte of the received keyboard data; Checking for a transmission error whether the inverted data of the make / break bit and the scan code of the second byte is the same as the make / break bit and the scan code of the third byte; And If there is a transmission error in each step, ignore the received keyboard data, and if there is no transmission error, proceed to the next step Wireless keyboard data receiving method comprising a. 12. The method of claim 11, wherein determining whether the make or brake is And if the make / break bit of the second byte is set, determine as a make, and if the make / break bit is cleared, determine as a break. The method of claim 11, wherein generating the make code and generating the break code And if the special bit of the first byte is set, recognizes it as a function conversion key, and if the special bit is cleared, recognizes it as a general key. In the keyboard data transmission and reception method between a wireless keyboard and a computer having a plurality of general keys and function conversion keys, In response to a key being pressed or released, a first bit including a start bit, a fixed bit reader, a special bit having status information of a function conversion key, an inverted bit, a parity bit, and an end bit of the special bit Generating; Generates a second byte that includes a start bit, a make / break bit indicating whether the key is pressed, and a scan code, parity bit, and end bit corresponding to the scan code of the pressed and depressed key according to the key being pressed or released. Doing; Generating a third byte including a start bit, a make / break bit of the second byte and an inverted data, a parity bit, and an end bit of a scan code according to a key being pressed or released; Converting and transmitting the keyboard data including the generated first to third bytes into a wireless signal; Wirelessly receiving keyboard data comprising the first to third bytes; Checking for a transmission error based on the second byte and the third byte of the keyboard data; Determining whether a make or a break is based on a make / break bit included in the second byte of the keyboard data; In the case of a make, determining whether it is a function conversion key based on a special bit made of one bit included in the first byte, and in the case of a function conversion key, generating a make code after setting a special bit; In the case of a break, determining whether it is a function conversion key based on the special bit included in the first byte, and in case of the break, clearing the special bit and generating a break code; And Processing a corresponding operation according to the special bit, make code, break code, or scan code; Wireless keyboard data transmission and reception method comprising the.