CN1200359C - Coding and identification method and system of single-frequency wireless peripheral equipment transmission protocol - Google Patents

Abstract

The invention is a coding and recognition method and system for wireless peripheral equipment transmission protocol, which uses amplitude shift keying Modulation (ASK Modulation) technology and uses single frequency as coding mode and retransmission method, in the wireless system with the first data transmission unit, the second data transmission unit and one data receiving unit, continuously transmits the packet twice in the transmission period of one packet, and uses four times of the sum of the transmission time of two different packets as the basis for transmitting one packet data, thus, the effect of operating two data transmission units simultaneously and identifying two different data packets by the single data receiving unit can be achieved, and the specific effect of reducing the cost of the wireless module can be achieved.

Description

Coding and identification method and system of single-frequency wireless peripheral equipment transmission protocol

technical field

The present invention relates to a coding method and system, in particular to a coding and identification method and system for a single-frequency wireless peripheral device transmission protocol used for a wireless mouse and a wireless keyboard.

Background technique

Most of the computer peripherals currently on the market, such as keyboards and mice, use wired methods for data transmission. Wired computer keyboards and mice are inconvenient to use because they are limited by the lines, and they cannot be used for long-distance control of the keyboard and mouse.

In order to improve the shortcomings of peripheral devices such as wired mice and keyboards, wireless keyboards and mice have been designed at present, but the prices are relatively expensive at present. Most of the products are designed separately, so if you buy a wireless mouse or keyboard separately, each has a set of wireless transmission and reception equipment. Therefore, if both wireless devices are purchased, there will be two sets of wireless transmitting and receiving devices. These two sets of wireless end devices are designed independently of each other, which is time-consuming and expensive.

Another product integrates a wireless mouse and a wireless keyboard, and only uses one receiving end. However, there are still some problems. Different designs, ie the receiving device needs to receive two different frequencies. Please refer to "Figure 1", the first data transmission unit 10 (such as a mouse) transmits data at a carrier frequency F1 through a wireless transmission module 101, and the second data transmission unit 20 (such as a keyboard) transmits data at a carrier frequency F2 through a wireless transmission module 201 Data, at the receiving end, that is, the data receiving unit 30 , receives the carrier frequencies F1 and F2 by the wireless receiving module 301 . Therefore, the first data transmission unit 10 and the second data transmission unit 20 must use different radio frequency modules due to different carrier frequencies (F1 and F2), that is, the designs of the wireless transmission modules 101 and 201 are different; , the receiving end, that is, the data receiving unit 30 must adopt two sets of different frequency hopping techniques in software design. Therefore, in terms of design, using this existing technology, the company must spend relatively high R&D costs on hardware and software design and production, and these R&D costs and production costs are reflected in product prices accordingly.

Therefore, how to transmit peripheral devices such as wireless computer keyboards and mice in the same way, that is, use the same transmission protocol, to achieve the purpose of wireless products that can be used together on the peripheral of the computer with a single frequency has become a research and development issue. The focus of the design.

Contents of the invention

In view of the above problems in the prior art, the object of the present invention is to provide a single-frequency wireless peripheral equipment transmission protocol encoding and identification method and system thereof, using amplitude shift keying modulation (Amplitude-Shin keying Modulation, ASK Modulation) With Time-Division-Multiplexing (TDM) technology, devices such as wireless keyboards and mice can transmit information at the same frequency. Therefore, the cost of wireless modules (such as radio frequency or infrared IR)15 can be greatly reduced and The power of the wireless module can be reduced, and there is no need to use complex techniques such as frequency hopping in software.

Another object of the present invention is to provide a single-frequency wireless peripheral equipment transmission protocol encoding and identification method and its system, which has a special identification code and can achieve effective anti-interference ability, so as to prevent interference with commercially available The purpose of mutual interference between consumer AV home appliances.

According to the technology disclosed in the present invention, the present invention provides a single-frequency wireless peripheral device transmission protocol encoding and identification method, which is to use amplitude shift key modulation (ASK Modulation) and set a single frequency as a first data transmission The carrier frequency of the wireless system of the unit, a second data transmission unit and a data receiving unit, in order to transmit a digital data, includes the following steps: setting the first data packet and the first identification packet of the first data transmission unit and the transmission time of the second data packet and the second identification packet of the second data transmission unit, and repeat the transmission of the packet twice within the time of transmitting one packet data according to a retransmission method; set the second data packet of the first data transmission unit A data packet and the data encoding content of the second data packet of the second data transmission unit, and set the contents of each field of the data packet according to the transmission rate of the first transmission unit and the second data transmission unit; set the second data transmission unit The first identification packet of a transmission unit and the second identification packet of a second transmission unit are used to identify the first data transmission unit and the second data transmission unit respectively, and according to the first transmission unit and the second The transmission rate of the data transmission unit sets each field content of the data packet; The communication system transmits the first data packet and the second data packet when in the data encoding state, and transmits the first identification packet and the second identification packet when the communication system is in the data identification state.

Using the above-mentioned technology, the present invention provides a coding and identification system of a single-frequency wireless peripheral device transmission protocol, the system includes: a first data transmission unit, which has a first identification key as a first identification packet setting, and having a first wireless transmission unit for transmitting a first data packet; a second data transmission unit, having a second identification shoot as a setting of a second identification packet, and having a second The wireless transmission unit is used to transmit a second data packet; and, the data receiving unit has a third data receiving unit, which is used to receive the first data packet, the first identification packet, the second data packet and the second identification Bag.

Description of drawings

Fig. 1 is the schematic diagram that the existing keyboard and mouse device use different transmitting frequencies respectively;

Fig. 2 is the coding and identification system of the single-frequency wireless peripheral device transmission protocol of the present invention;

FIG. 3 is a schematic diagram of ASK modulation technology;

FIG. 4 is a schematic diagram of a data transmission unit transmitting packets of the present invention;

Fig. 5 is a schematic diagram of the transmission packet viewed from the first data transmission unit of the present invention;

6 is a schematic diagram of a transmission packet viewed from a second data transmission unit according to the present invention;

Fig. 7 is a schematic diagram of the transmission packet viewed by the data receiving unit in the present invention;

8A-8E are schematic diagrams of bit coding in the present invention;

Fig. 9 is a schematic diagram of data packets transmitted by the mouse of the present invention;

Fig. 10 is a schematic diagram of data packets transmitted by the keyboard of the present invention;

Fig. 11 is the coding and identification system of the single-frequency wireless peripheral device transmission protocol with ID identification added in the present invention;

Fig. 12 is the data structure of the mouse data packet of the present invention;

Fig. 13 is the data structure of the keyboard data packet of the present invention;

Fig. 14 is a schematic diagram of the ID identification data packet transmitted by the mouse of the present invention; and

Fig. 15 is a schematic diagram of the ID identification data packet transmitted by the keyboard of the present invention.

Detailed ways

Please refer to "Fig. 2", the coding and identification system of the single-frequency wireless peripheral device transmission protocol of the present invention. The single-frequency system of the present invention includes a first data transmission unit 40 , a second data transmission unit 50 and a data receiving unit 60 . The first data transmission unit 40 and the second data transmission unit 50 respectively have a wireless transmission module 401 and 501, these two modules are the same module in structure, can be radio frequency (RF) or infrared (IR) transmission module, its Commonly using the same carrier frequency F30, the data receiving unit 60 has a wireless receiving module 601, which only needs to receive a single carrier frequency F3. Therefore, the system of the present invention can realize simple design, and only need to use a single frequency at the transmitting end or the receiving end to achieve the purpose of wireless transmission.

Next, the following will introduce how the present invention actually achieves a single frequency to allow two different wireless peripheral devices to use the same frequency, that is, the encoding and identification method of the transmission protocol of the present invention.

First of all, due to the use of a single frequency, the modulation technology uses amplitude shift keying modulation (Amplitude, Shift keying Modulation, hereinafter referred to as ASK modulation). The length modulates the pulse width. As shown in "Figure 3", the original digital signal x(t) becomes the signal SASK(t) after undergoing the ASK cycle system, the part of bit 1 becomes the part with pulse width Tb in SASK(t), and the part of bit 11 becomes the signal SASK(t). The part that becomes double Tb, and the part where the bit is 0, has no output. Therefore, the present invention can achieve the effect of saving power in the part of the wireless module.

Secondly, the clock division of the peripheral equipment (such as the first data transmission unit 40 and the second data transmission unit 50 in "FIG. 2") is done according to the TDM method, and the details are as follows:

Please refer to "Fig. 4", the time length of the data packet of the first data transmission unit is now set as B time, wherein, T1 is the time it takes to transmit data once each time, in order to prevent the transmission of data from being wrong and to ensure that the packet ( packet) can be completely received, therefore, every time data is transmitted, the data packet is repeatedly transmitted, and the interval time between each repetition is T2; the time length of the data packet of the second data transmission unit is A time, and the data is transmitted once The time spent by the packet is T3, and it is also transmitted twice with an interval of T4.

However, in order to meet the requirement that two different packets can be transmitted simultaneously, the packets must be transmitted sequentially, that is, the time must be divided by TDM. From the perspective of the first data transmission unit, the interval T2 of repeatedly transmitting packets must be able to accommodate A time, that is, T2≥A (Formula 1), as shown in "FIG. 5". At the same time, the time T1 for each data packet transmission by the first data transmission unit, and the remaining time for the two consecutive transmissions of the packets, must be able to accommodate the A time for the two consecutive transmissions of the data packets of the second data transmission unit, that is, T1 -(T2+2B)≥T4+2A (Formula 2).

From the perspective of the second data transmission unit, T4 is arranged to accommodate the size of the entire first data transmission unit data packet each time the data packet is repeatedly transmitted, that is, T4≥T2+2B (formula 3), as shown in "Fig. 6 " Shown. At the same time, the time T3 for each data packet transmission, the remaining time for two consecutive packets transmission, must be able to accommodate the data packets of the entire first data transmission unit, that is, repeat the transmission of the first data transmission unit packet twice Time, that is, T3-(T4+2A)≥T2+2B (Equation 4).

Based on the above results, it can be obtained from Equations 1-4 that T1≥4(A+B) (Equation 5) and T3≥4(A+B) (Equation 6). Therefore, the respective transmission times required by the first data transmission unit and the second data transmission unit should be greater than or equal to four times the sum of the lengths of the respective data packets. Therefore, as long as the time lengths of different data packets are set, the length of time required to transmit data once can be obtained.

Such a design, its effect can be seen at the receiving end, please refer to "Figure 7". If both the first data transmission unit and the second data transmission unit transmit data at the same time, the situation will be as shown in "Figure 7", the packet data received by the data receiving unit, due to the Data collision occurs in the packet data transmitted by the second data transmitting unit, so the data receiving unit cannot recognize the data. However, since the present invention transmits a packet (T2≥A) at the interval time T2 of the first data transmission unit, and similarly transmits a packet (T4≥B) at the interval time T4 of the second data unit, the first packet ( For example, after B) overlaps with another package (such as A), it is impossible for the second repeated package (B') to overlap with another repeated package (A'), so the data receiving unit can still completely A second retransmitted packet (B' and A') is received.

In fact, due to the design of two repeated packet transmissions, the data transmitted by two different data transmission units can be completely transmitted by the data receiving unit no matter at any point in time, regardless of whether there is data overlap or not. Two different packet data are received. Therefore, with this TDM time division, the present invention only needs to design the same 7 sets of receiving equipment at the receiving end, that is, as long as the data receiving unit can identify the contents of the packet.

The present invention solves the time configuration problem of packet transmission, and then, the technology that the present invention actually handles two different peripheral devices will be introduced below, that is, the design of the packet content, and the present invention will take wireless mouse and wireless keyboard as specific examples Example. Since the data contents transmitted by the mouse and the keyboard are different, the designed packet sizes are also different. The above-mentioned A and B may have different time sizes, which will be described separately below.

From the perspective of the mouse packet data structure, please refer to "Figure 12". The data of the mouse occupies five bytes (Byte), and each byte has eight bits (bit) of data. The field data content of each byte is detailed. as follows:

Byte 1 is the packet command (packet command), which contains:

Component type (device type): used to identify the type of data transmission unit, for example, 10 for the mouse;

Sequence number (Sequence number): The sequence number used to identify each received packet, for example, the sequence number of repeated packets is the same, such as 0 and 0, or 1 and 1; while two adjacent different packets have different sequence numbers, If a packet has a sequence number of 0, its adjacent two different packets will have a sequence number of 1, and vice versa.

Low battery (Battery Low): The battery status of the data transmission unit, such as 0 can be set to the normal state, and 1 can be set to the low battery state.

Set (Set): The identification code transmission status indication, can be set to 0 for the general transmission status, 1 for the status of the identification code setting process.

M: It is the middle button of the mouse (Middle Button), set 1 to press the middle button.

R: The state of the right button of the mouse (Right Button), set 1 to press the right button.

L: It is the state of the left button of the mouse (Left Button), set 1 to press the left button.

Byte 2 is the movement data in the X direction of the mouse, and if it is a negative direction, it is expressed in the form of 2's complement. If the "set" (Set) bit is 1, it is the identification code (Identity, ID) of the component, and the part of this identification code will be introduced later.

Byte 3 is the movement data in the Y direction of the mouse, if it is in the direction of the rabbit, it is expressed in the form of 2's complement.

Byte 4 is the mouse command, which includes other related commands of the mouse:

YS: Signed bit for motion in the X direction.

XS: Signed bit for movement in the Y direction.

Z0-Z3: the movement of the direction of the mouse.

B5: It is the state of the fifth button of the mouse (5th Button), and 1 is the fifth button pressed.

B4: It is the state of the fourth button of the mouse (4th Button), and 1 is the fourth button pressed.

Byte 5 is a checksum (Checksum), which is used to check whether there is an error in the packet.

Next, look at the packet data structure of the keyboard, please refer to "Figure 13". The data of the keyboard occupies three bytes (Byte), and each byte has eight bits of data. as follows:

Byte 1 is the packet command (packet command), which contains:

Component type (device type): used to identify the type of data transmission unit, such as the keyboard is 01;

Sequence number (Sequence number): The sequence number used to identify each received packet, for example, the sequence number of repeated packets is the same, such as 0 and 0, or 1 and 1; while two adjacent different packets have different sequence numbers, If a packet has a sequence number of 0, its adjacent two different packets will have a sequence number of 1, and vice versa.

Low battery (Battery Low): The battery status of the data transmission unit, such as 0 can be set to the normal state, and 1 can be set to the low battery state.

Set (Set): channel transmission status indication, can be set to 0 for the general transmission status, 1 for the status of the identification code setting process.

M/B: indicates that the key is tapped or removed, M stands for build code, B stands for interrupt code.

End: The indicator indication of the keyboard status, which can be set to 0, indicating that at least one key is still being operated, and 1, indicating that all keys are released, that is, not operated.

Byte 2 is the keyboard code (Key Number), which outputs the key code on the keyboard. If the "set" bit is 1, then this byte is the identification code (Identity, ID) of the component.

Byte 3 is a checksum (Checksum), used to check (detect) whether there is an error in the packet.

Next, the start and end codes of each packet and the encoding of each bit must be defined, please refer to "Figures 8A-8E". It is emphasized again that in the above specific embodiment, the mouse occupies 40 bits of data, and the keyboard occupies 24 bits of data. In practice, the report rate of the mouse (such as a standard PS/2) and the keyboard is greater than or equal to 40 times per second, that is, 40 packets of data can be transmitted per second, so each packet Data can be transmitted within 25 milliseconds (ms). In addition to this restriction, the restriction of T1≥4(A+B) (Formula 5) and T3≥4(A+B) (Formula 6) must be added, that is, the transmission time of each packet must be greater than or equal to the mouse Four times the time added to the keyboard package. Under this limitation, the following time settings can be made to set the entire packet transmission time at 24 milliseconds:

The bit "0" is a high potential for 30 microseconds (μs) and a zero potential for 30 microseconds (μs), as shown in "FIG. 8A".

The bit "1" has a high potential for 40 microseconds (μs) and a zero potential for 40 microseconds (μs), as shown in "FIG. 8B".

The packet starts with a high potential of 55 microseconds (μs) and a zero potential of 55 microseconds (μs), as shown in “FIG. 8C”.

The packet ends with a high potential for 70 microseconds (μs) and a zero potential for 70 microseconds (μs), as shown in “FIG. 8D”.

Therefore, by virtue of this bit distinction, the entire packet structure is shown in "Figure 8E". From the beginning to the packet data and the end, all of these can be achieved by ASK modulation, and there will be no problem of bit identification errors; in addition, wireless The module can adopt radio frequency (RF) or infrared (IR) module. The length of the mouse and keyboard packet under such a design can be limited within 6 milliseconds, which can meet the above-mentioned transmission limitation.

The above-mentioned packet content has been roughly defined. Next, the packet data structure of the present invention will be introduced in more detail. Please refer to "Figure 9", a schematic diagram of the packet data transmitted by the mouse. Each byte contains 8 bits. Since the present invention sets the time length of bit "0" and bit "1", the data content of each byte is approximately between 480-320 microseconds (μs). . The packet data structure length of the mouse is about 3.5 milliseconds (ms), and the packet length sent by the mouse is about 24ms.

Please refer to "Figure 10", the schematic diagram of the packet data transmitted by the keyboard. Each byte has comprised 8 bits, because the present invention sets bit " 0 " and the time length of bit " 1 " is different, so, the data content of each byte is about between 480-320 microseconds (μs> The length of the packet data structure of the keyboard is about 2.5 milliseconds (ms), and the length of the packet sent by the keyboard is about 24ms.

After the definition of the package is completed, there is still a part to be defined, that is, the present invention is a wireless transmission protocol, so when there are identical products nearby, there must be a function that can identify each other. The present invention achieves this project through the setting of the identification code.

Please refer to "Figure 11", the system for encoding and identifying the transmission protocol of the single-frequency wireless peripheral equipment with ID identification added in the present invention, please refer to "Figure 2" for comparison. On the first data transmission unit 40, the second data transmission unit 50 and the data receiving unit 60, an identification key (ID Key) 402, 502 and 602 is added respectively, and these identification keys are used to set the respective corresponding data transmission units With the data receiving unit, its content will be recorded in the data packet.

The button program of the identification key can be set to first press the identification keys 402 and 502 of the first data transmission unit 40 and the second data transmission unit 50, and then press the identification key 602 of the data receiving unit 60 to set a new identification code.

Please refer back to "Fig. 12" and "Fig. 13". During the setting period, in the data packets of the mouse and the keyboard (that is, the first data transmission unit 40 and the second data transmission unit 50), the first byte The "set" bit is "1". At this time, the data content sent by the mouse is shown in "Figure 14", which is the same as in "Figure 12". The data of the mouse occupies five bytes (Byte), and each byte There are eight bits of data, and the data content of each byte is detailed as follows:

Byte 1 is the packet command (packet command), which includes: device type (device type), serial number (Sequence number), low battery (Battery Low) and setting (Set) and other bits of data content and "Figure 12 "Same, no more details.

Count down: Contains three bits, counting down from 7, and subtracting 1 every time a packet is transmitted, until the countdown is 0, which means that all subsequent packets will transmit information with a new identification code.

At this time, byte 2 is changed to the identification code (Identity, ID) of the component, which is generated randomly.

Byte 3 is a checksum (Checksum).

Byte 4 is the 2's complement of the check code to ensure that the contents of the packet are error-free.

Byte 5 is also a checksum (Checksum).

The content of the data sent by the keyboard is shown in "Figure 15", which is the same as "Figure 2". The data of the keyboard occupies three bytes (Byte), and each byte has eight bits of data. The data content is detailed as follows:

Byte 1 is the packet command (packet command), which includes: device type (device type), serial number (Sequence number), low battery (Battery Low) and setting (Set) and other bits of data content and "Figure 13 "Same, no more details.

Count down: Contains three bits, counting down from 7, and subtracting 1 every time a packet is transmitted, until the countdown is 0, which means that the subsequent packets will be transmitted by the new channel.

Byte 2 is changed to the new identification code (Identity, ID) of the component.

Byte 3 is a checksum (Checksum).

Claims (14)

1. A coding and identification method for a single-frequency wireless peripheral device transmission protocol, characterized in that it uses amplitude shift keying modulation and sets a single frequency as having a first data transmission unit and a second data transmission unit The carrier frequency of the wireless system with a data receiving unit, in order to do the transmission of a digital data, comprises the following steps: Set the transmission time of the first data packet and the first identification packet of the first data transmission unit and the second data packet and the second identification packet of the second data transmission unit, and transmit a packet data time according to a retransmission method Repeat the transmission packet twice within; Setting the data encoding content of the first data packet of the first data transmission unit and the second data packet of the second data transmission unit, and setting the transmission rate of the first data transmission unit and the second data transmission unit Determine the contents of each field of the data packet; Setting the first identification packet of the first transmission unit and the second identification packet of the second transmission unit as the identification of the first data transmission unit and the second data transmission unit respectively, and according to the first transmission unit and the second data transmission unit the content of each word of the transmission rate setting data packet of the second data transmission unit; and Set an identification key, usually the communication system is in a data encoding state, when the identification key is pressed, it is in a data identification state, when the communication system is in the data encoding state, the first data packet and the second data packet are transmitted Two data packets, for sending the first identification packet and the second identification packet when the communication system is in the data identification state. 2. The encoding and identification method of the wireless peripheral device transmission protocol as claimed in claim 1, wherein the first data transmission unit is a wireless keyboard and the second data transmission unit is a wireless mouse, and , the first data packet is a keyboard data packet and the second data packet is a mouse data packet, and the first identification packet is a keyboard identification packet and the second identification packet is a mouse identification packet . 3. The encoding and identification method of the transmission protocol of wireless peripheral equipment as claimed in claim 1, characterized in that the single-frequency transmitting device is a radio frequency or an infrared transmitting device, one of which is selected. 4. The encoding and identification method of wireless peripheral equipment transmission protocol as claimed in claim 1, characterized in that the retransmission method is to transmit the first data packet for the first time during the time T1 of transmitting the first data packet. After the data packet, transmit the first data packet again at interval A, and the time T1 is greater than or equal to (4A+4B) time; After the second data packet, transmit the second data packet again at an interval of (A+2B), and the time T3 is greater than or equal to (4A+4B) time; wherein, time A is for transmitting the second data packet Time, time B is the time for transmitting the first data packet. 5. The encoding and identification method of wireless peripheral equipment transmission protocol as claimed in claim 1, characterized in that the retransmission method is to transmit the first identification packet for the first time during the time T1 of transmitting the first identification packet. After identifying the packet, transmit the first identification packet again at interval A, and the time T1 is greater than or equal to (4A+4B) time; After the second identification packet, transmit the second identification packet once at an interval of (A+2B), and the time T3 is greater than or equal to (4A+4B) time; wherein, time A is for transmitting the second identification packet Time, time B is the time for transmitting the first identification packet. 6. the coding and the identification method of wireless peripheral equipment transmission protocol as claimed in claim 2, it is characterized in that described mouse data packet is to comprise the data structure of five bytes, and the composition and field content of each byte are for : The first byte is a packet command, which includes: an element type field, used to identify the type of data transfer unit; a sequence number field of a data packet, used to identify the sequence number of each different mouse data packet; A power status field is used to indicate the battery status of the wireless mouse; a setting status field is used to indicate the transmission status of the update identification code; a middle button status field is used to indicate the pressing status of the middle button of the wireless mouse; a right button A state field is used to indicate the right button press status of the wireless mouse; and a left button status field is used to indicate the left button press status of the wireless mouse; wherein, the component type field is two bits, and the rest is one bit ; The second byte is the motion data of the wireless mouse in the X direction, and the negative direction is expressed in the form of 2's complement; The third byte is the motion data of the wireless mouse in the Y direction, and the negative direction is expressed in the form of 2's complement; The 4th byte is the order of this wireless mouse, and it comprises: - the mark field of X direction motion; One mark field of Y direction motion; One fifth key state field, in order to indicate the fifth key pressing state of this wireless mouse ; A fourth key state field, used to indicate the fourth key press state of the wireless mouse; and, a motion data field in the Z direction, used to record the motion data in the Z direction of the wireless mouse; wherein, the motion in the Z direction The data field is three bits, and the rest are one bit; and The fifth byte is a check code for checking the error status of the mouse data packet. 7. the coding and the identification method of wireless peripheral equipment transmission protocol as claimed in claim 2, it is characterized in that described keyboard data packet is to comprise the data structure of three bytes, and the composition and field content of each byte are for : The first byte is a packet command, which includes: an element type field, used to identify the type of data transfer unit; a sequence number field of a data packet, used to identify the sequence number of each different mouse data packet; A power status field is used to indicate the battery status of the wireless mouse; a setting status field is used to indicate the transmission status of the update identification code; a setup code or interrupt code indicator field is used to indicate the knocking status of the key; The indicator field of the keyboard end state is used to indicate whether the wireless keyboard is still in operation; wherein, the element type field is two bits, and the rest is one bit; The second byte is the keyboard code of the wireless keyboard, which is used to record the key data of the wireless keyboard; and The third byte is a check code, which is used to check the error status of the keyboard data packet. 8. the coding and identification method of wireless peripheral device transmission protocol as claimed in claim 2 is characterized in that described mouse data packet and this keyboard data packet are to comprise a bit " 0 ", bit " 1 ", packet start and Packet end data, and use amplitude shift keying modulation technology to control the time length of the bit "0", bit "1", packet start data and packet end data. 9. The encoding and identification method of wireless peripheral equipment transmission protocol as claimed in claim 8, characterized in that the time length of said bit "0" is 30 microseconds high potential and 30 microseconds low potential; the bit "1" "The length of time is the time length is 40 microseconds high electric value 40 microseconds low electric potential; the time length of the beginning data of this packet is 55 microseconds high electric potential and 55 microseconds low electric potential; and, the time of the end data of this packet The length is 70 µs high potential and 70 µs low potential. 10. the coding of wireless peripheral device transmission protocol and identification method as claimed in claim 2, it is characterized in that described mouse identification bag is to comprise the data structure of five bytes, and the composition of each byte and field content are for : The first byte is a packet command, which includes: an element type field, used to identify the type of data transfer unit; a sequence number field of a data packet, used to identify the sequence number of each different mouse data packet; A power status field is used to indicate the battery status of the wireless mouse; a setting status field is used to indicate the transmission status of the updated identification code; a countdown field is used to count down the data identification status and stop the mouse at the end of the timing. Data identification status; wherein, the element type field is two bits, the reciprocal field is three bits, and the rest is one bit; The second byte is the identification code of the wireless mouse, which is generated randomly; The third byte is a check code: The fourth byte is the 2's complement for the checksum: and The fifth byte is for the check code. 11. the coding of wireless peripheral device transmission protocol and identification method as claimed in claim 2, it is characterized in that described keyboard identification bag is to comprise the data structure of three bytes, and the composition of each byte and field content are for : The first byte is a packet command, which includes: an element type field, used to identify the type of data transfer unit; a sequence number field of a data packet, used to identify the sequence number of each different mouse data packet; A power status field is used to indicate the battery status of the wireless mouse; a setting status field is used to indicate the transmission status of the updated identification code; a countdown field is used to count down the data identification status and stop the mouse at the end of the timing. Data identification status; wherein, the element type field is two bits, the reciprocal field is three bits, and the rest is one bit; The second byte is the identification code of the wireless keyboard and is randomly generated; and The second byte is a check code. 12. The coding and identification method of wireless peripheral equipment transmission protocol as claimed in claim 2, is characterized in that described mouse identification bag and this keyboard identification bag are to comprise a bit " 0 ", bit " 1 ", bag start and Packet end data, and use amplitude shift keying modulation technology to control the time length of the bit "0", bit "1", packet start data and packet end data. 13. The encoding and identification method of wireless peripheral equipment transmission protocol as claimed in claim 12, characterized in that the time length of said bit "0" is 30 microseconds high potential and 30 microseconds low potential; the bit "1" "The length of time is recorded as 40 microseconds high potential and 40 microseconds low potential for the length of time; the time length of the start data of the packet is 55 microseconds high potential and 55 microseconds low potential; and, the time length of the end data of the packet It is 70 microseconds high potential and 70 microseconds low potential. 14. A single-frequency wireless peripheral equipment transmission protocol encoding and identification system, which uses amplitude shift keying modulation technology to control the bit transmission time of the data packets transmitted by the system, and uses a retransmission method to transfer the data packets of the system passed twice, containing: A first data transmission unit has a first identification key as the setting of a first identification package, and has a first wireless transmission unit for transmitting a first data package, and transmits the first data package each time The time with the first identification packet is (4A+4B); A second data transmission unit has a second identification key as the setting of a second identification package, and has a second wireless transmission unit for transmitting a second data package, and transmits the second data package each time The time with the second identification packet is (4A+4B); and A data receiving unit having a third data receiving unit for receiving the first data packet, the first identification packet, the second data packet and the second identification packet; Wherein, B is the time for transmitting the first data packet or the first identification packet, and A is the time for transmitting the second data packet or the second identification packet.

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