KR20070048507A - Apparatus for changing frequency in wireless mouse and method thereof - Google Patents

Abstract

The present invention relates to a frequency change device and method of the wireless optical mouse to change the frequency in accordance with the user's request during use of the wireless optical mouse to minimize the influence of the surrounding jamming or electromagnetic waves,

In the present invention, the transmitter sets a transmission / reception frequency when the transmitter is separated from the charging terminal, and generates a frequency code and frequency change data to be changed and transmitted as a wireless signal when a frequency change signal is detected while the wireless optical mouse is in use. Automatically change to a frequency corresponding to the frequency code to be changed, and the receiving end receives and analyzes the transmitted radio signal, and when the result of the analysis, transmits the relevant data to the connected computer in case of general mouse data, and in case of frequency change data, the received data. By extracting the frequency change code from the automatic change to the corresponding frequency, it is possible to prevent interference and easily change the frequency during use.

Wireless optical mouse, frequency setting, frequency change

Description

Apparatus for changing frequency in wireless mouse and method

1 is a block diagram showing an apparatus for transmitting a wireless optical mouse according to a preferred embodiment of the present invention.

2 is a block diagram illustrating an embodiment of the controller of FIG. 1.

Figure 3 is a block diagram showing an apparatus for receiving a wireless optical mouse according to a preferred embodiment of the present invention.

4 is a flowchart illustrating a method of changing a frequency of a wireless optical mouse according to the present invention, which is a flowchart of changing a frequency in a transmitting apparatus.

5 is a flowchart illustrating a method of changing a frequency of a wireless optical mouse according to the present invention, which is a flowchart of changing a frequency in a receiving apparatus.

<Explanation of symbols for the main parts of the drawings>

150... Control

151... Frequency change request detector

152... Timer drive

153... Timer

154... Frequency change code reader

155... Frequency change data generator

180... RF transmitter

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frequency change of a wireless optical mouse. Particularly, a frequency changing apparatus of a wireless optical mouse which minimizes the influence of surrounding disturbance or electromagnetic waves by changing the frequency quickly according to a user's request during the use of the wireless optical mouse. And to a method thereof.

In general, a computer mouse is an input device used for interaction between a user of a graphical user interface (GUI) method and a computer. An icon is used on a computer screen by using a pointer displayed corresponding to the current position of the mouse. It is used to execute a given program or command by specifying or selecting a menu from a list of menu items. Such a computer mouse has been spotlighted as an input device due to its simple operation, and its use is expanding.

Computer mouse is classified into optical mouse and ball mouse according to the method of detecting the movement trajectory of the mouse. The optical mouse detects the movement of the mouse by detecting the change of reflected light when the mouse moves, and the ball mouse contacts the floor. The movement of the mouse is detected by detecting the rolling direction of the rolling ball.

In recent years, the optical mouse is more mainstream than the ball mouse, and the connection between the optical mouse and the computer can be made through a PS / 2 or USB interface, and the USB interface is easier than the PS / 2. The method is the preferred trend.

A mouse is roughly divided into a wired mouse method connected to a computer through a separate cable and a wireless method using a wireless module of a USB interface type. In the case of a wired mouse, there are disadvantages of distance limitation from the computer and many inconveniences in use. Recently, many wireless optical mouse technologies have been proposed.

In the case of a wireless optical mouse, the receiving device and the computer are wired by a USB interface method, a mouse having an RF transmitting device and the receiving device wirelessly perform data communication, and receive wireless data transmitted from the transmitting device at the receiving device. After that, it is converted into a USB interface signal and connected to a computer.

On the other hand, the conventional wireless optical mouse usually uses a frequency of 315MHz band, at this time, the reception device does not receive the reception frequency or noise in the reception frequency due to interference or other radio optical mouse frequency inflow or electromagnetic wave generation around In case of inflow, the computer may malfunction due to incorrect received data or fail to perform the operation due to data disconnection.

In this case, in the past, the program was recognized as a malfunction and a method of rebooting the computer was used. However, this cannot be regarded as a fundamental solution. Disconnection problems continue to occur.

Therefore, the present invention has been proposed to solve various problems occurring in the conventional wireless optical mouse as described above.

SUMMARY OF THE INVENTION An object of the present invention is to provide a device for changing a frequency of a wireless optical mouse, which minimizes the influence of surrounding jammers or electromagnetic waves by rapidly changing the frequency according to a user's request while using the wireless optical mouse.

Another object of the present invention is to provide a method of changing a frequency of a wireless optical mouse to minimize the influence of surrounding jammers or electromagnetic waves by quickly changing the frequency according to a user's request while using the wireless optical mouse.

According to a preferred embodiment of the present invention for achieving the above object "frequency changing device of the wireless optical mouse",

A transmission device for generating a frequency change code and frequency change data when the frequency change signal is input while the wireless optical mouse is in use and transmitting them wirelessly, and automatically changing the frequency to a frequency corresponding to the generated frequency change code;

And a charging and receiving device for automatically changing a frequency according to the frequency change data transmitted from the transmitting device to receive wireless data and transferring the received wireless data to a connected computer main body.

In addition, the transmitting apparatus includes an operation unit for inputting the frequency change signal; A control unit which controls the entire operation of the apparatus and generates a frequency change code when the frequency change signal is input by the operation unit and generates and outputs frequency change data including the generated frequency change code; It is preferable to include an RF transmitter for modulating the frequency change data output from the control unit into a radio frequency signal (RF signal) to transmit a radio signal through a transmission antenna.

The control unit may further include a frequency change signal detection unit detecting a frequency change signal manipulated by a user; A timer driver for controlling driving of the timer according to the timer driving control signal; A timer unit whose operation is controlled in response to the control of the timer driver; A frequency change code reading unit reading a timer value obtained when the timer unit stops operating with a frequency change code; A central processing unit controlling the timer driver according to an output signal of the frequency change signal detector and controlling generation and frequency change of frequency change data by using a frequency change code read by the frequency change code reader when the frequency change signal is detected; Wow; A frequency change data generation unit generating frequency change data using the frequency change code according to the control of the CPU; It is preferable to include a frequency changing unit for changing the frequency in accordance with the control of the central processing unit.

Here, the timer unit preferably includes at least two timers, and the frequency changer preferably includes a memory in which change frequency data corresponding to a frequency change code is stored.

The receiving device includes: a communication interface unit connected to the computer main body by wire to interface data; An RF receiver for receiving data wirelessly transmitted from the transmitter; A control unit which controls the entire operation of the receiver, extracting frequency change data from the data received by the RF receiver; Preferably, the control unit includes a frequency changer for changing the frequency of the RF receiver in response to the control of the controller.

According to a preferred embodiment of the present invention for achieving the above object "frequency changing method of a wireless optical mouse",

When it is separated from the charging terminal, it sets the transmission / reception frequency, and when the frequency change signal is detected while using the wireless optical mouse, it generates and transmits the frequency code and frequency change data to be transmitted as a wireless signal, and the frequency corresponding to the frequency code to be changed. A transmission process for automatically changing to;

Receives and analyzes the transmitted radio signal, and transmits the corresponding data to the connected computer in the case of general mouse data, and extracts the frequency change code from the received data and automatically changes to the corresponding frequency in the case of the frequency change data. Receiving process is included.

Here, the transmission process, the first step of checking whether the departure from the charging terminal; A second step of setting a frequency through a frequency setup process and transmitting data at the set frequency when the check result is a departure from the charging terminal; Driving a frequency code setting timer after setting the frequency; A fourth step of checking whether a frequency change signal is detected after the timer is driven; A fifth step of stopping the driven timer and reading a frequency code value when a frequency change signal is detected as a result of the checking; A sixth step of generating frequency change data using the read frequency code value and wirelessly transmitting it to a receiving device; And a seventh step of automatically changing a frequency and transmitting mouse data at the changed frequency when a predetermined time elapses after the frequency change data is sent.

In addition, the receiving process, the first step of setting the frequency to the initial set frequency; A second step of analyzing the radio signal at the set frequency; A third step of transmitting the received data to a connected computer if the analysis result of the received data is general mouse data; A fourth step of extracting a frequency change code from the received data when the frequency change data is analyzed, performing automatic frequency change to a frequency corresponding to the extracted frequency change code, and receiving data at the changed frequency; Include.

Hereinafter, a preferred embodiment of the present invention according to the technical spirit as described above will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing the configuration of a transmission apparatus for a wireless optical mouse according to a preferred embodiment of the present invention.

As shown therein, the transmitter includes a charging unit 110 for charging, a built-in nickel-manganese battery 120, and a DC / DC converter for converting a discharge voltage of the battery 120 into a DC voltage of a predetermined level. 130) and the light emitted from the light emitting element is refracted to the bottom surface on which the mouse is raised through the lens body, and then the light reflected by the bottom surface is collected through the light receiving unit, and then converted into an electrical signal and converted into digital data. The optical sensor 160 converts and outputs the mouse data, and a wheel signal generator 170 for generating a signal corresponding to an up / down operation of the scroll wheel provided in the wireless optical mouse.

In addition, the transmission apparatus according to the present invention, the operation unit 140 for inputting the frequency change signal or the power control signal, and the frequency change code when the frequency change signal is input by the operation unit 140 to control the overall operation of the apparatus Generates and outputs frequency change data including the generated frequency change code, and generates and outputs the power control data when the power control signal is input, and the frequency change output from the controller 150. An RF transmitter 180 modulates data into a high frequency signal (RF signal) and transmits the data to a wireless signal (2.4 GHz) through the transmission antenna 181.

Here, as shown in FIG. 2, the controller 150 includes a frequency change signal detector 151 for detecting a frequency change signal manipulated by a user; A timer driver 152 for controlling the driving of the timer according to the timer driving control signal; A timer unit 153 whose operation is controlled in response to the control of the timer driver 152; A frequency change code reading unit 154 for reading a timer value obtained when the timer unit 153 stops operating with a frequency change code; The timer driver 152 is controlled according to the output signal of the frequency change signal detector 151, and when the frequency change signal is detected, the frequency change data is generated and the frequency is changed by the frequency change code read by the frequency change code reader 154. A central processing unit 156 to control the; A frequency change data generation unit 155 for generating frequency change data using a frequency change code under the control of the central processing unit 156; And a frequency changing unit 157 for changing the frequency according to the control of the central processing unit 156.

In addition, the timer unit 153 preferably includes first to fourth timers 153a to 153d, and the frequency changer 157 preferably includes a memory in which change frequency data corresponding to a frequency change code is stored. .

And the receiving device, as shown in Figure 3, the power supply unit 210 for supplying power; A communication interface 220 connected to the computer main body by wire to interface data; An RF receiver 230 for receiving data wirelessly transmitted from a transmitter; A control unit 240 for controlling the entire operation of the receiver, and controlling frequency change by extracting frequency change data from the data received by the RF receiver 230; And a frequency changer 250 for changing the frequency of the RF receiver 230 in response to the control of the controller 240.

Hereinafter, the operation of the wireless optical mouse according to the present invention configured as described above will be described in detail with reference to FIGS. 1 to 3. If it is determined that the detailed description of the known function or configuration related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

In the present invention, the transmitting device refers to a wireless optical mouse used by a real user while moving, and the receiving device is a device that is connected by wire with a computer and wirelessly transmits and receives data with the transmitting device, and includes a charging stand.

When the charging device, which is a wireless optical mouse, is seated on the receiver, charging of the battery 120 is started by the charging unit 110, and the DC / DC converter 130 converts the voltage discharged from the battery 120 into a predetermined level of direct current. The voltage DC3.3V is made to be supplied to the controller 150, and the driving voltage is effectively supplied to a portion requiring a driving voltage other than the controller 150.

If the user detaches the transmitter from the receiver to use the transmitter while the transmitter is seated on the receiver, charging is terminated and the controller 150 sets the frequency for wireless transmission and reception through the initially set default frequency. Will be performed.

That is, the central processing unit 156 in the control unit 150 turns off each timer 153a to 153d in the timer unit 153 through the timer driver 152 at the moment when the transmitting device is separated from the receiving device. Here, the timers 153a to 153d have different operation time values. In other words, since the operation speed is different, assuming 8 bits as one cycle, even if four timers are started at the same time, they are shifted to substantially different values. Therefore, since the value of four timers can obtain about 3 billion different values, the number of frequencies that can be changed relatively can be set correspondingly, so that it can sufficiently cope with surrounding eavesdropping, electromagnetic waves or radio wave interference. Will be.

In the timer off operation, the frequency change code reading unit 154 reads the current state value of each timer 153a to 153d in the timer unit 153 and transmits the current state value to the CPU 156 as a frequency change code. The device 156 controls the frequency change data generator 155 to insert a frequency change code into a portion of the transmission data.

The frequency change data generation unit 155 generates the transmission data including the frequency change code data transmitted from the central processing unit 156 and provides it to the RF transmitter 180. Here, the transmission data includes a mouse data code area of a predetermined bit in which mouse data is recorded and a control code ID area in which control code ID data is recorded. Among them, data indicating the frequency setup is recorded in the last two bits of the control code ID area. In the remaining area of the control code ID, a frequency change code indicating a frequency to be changed is recorded. Although two bits are used for the data indicating the frequency setup, it is not necessary to use 2 bits and the corresponding bits can be increased or decreased as necessary.

The transmission data including the frequency setup data and the frequency code data to be changed are converted into a 2.4 GHz RF signal by the RF transmitter 180 and transmitted through the transmission antenna 181. By setting to the frequency corresponding to the frequency change code to set up, each timer is also driven again.

The RF receiver 230 of the receiver receives the radio signal transmitted from the transmitter, demodulates the original signal, and provides the digital signal to the controller 240 as digital data.

The controller 240 analyzes the received data and analyzes the received data to extract frequency change code data from the received data, and transmits the changed frequency code data to the frequency changing unit 157. The frequency changing unit 157 changes the frequency. Change to the frequency corresponding to the code to complete the setup operation.

When the frequency setup process is completed, the transmitter and the receiver transmit and receive wireless data through the newly set frequency band.

That is, in the present invention, when the transmitter is seated on the receiver, and then separated from the receiver, a frequency setting process is performed immediately to set up a new frequency.

On the other hand, when set up with a new set frequency, the mouse data is transmitted and received at the set frequency, and the user can use the same amount by using a large amount of wireless optical mouse in the same band around the disturbance of electromagnetic wave or influx of electromagnetic waves while using the mouse. If there is a crosstalk due to the use of frequency or the like, the signal recognition is delayed, or the computer is determined to be malfunctioning or not operating properly, the three buttons (left button, right button, scroll wheel button) in the operation unit 140 are changed to change the frequency. Will be pressed at the same time.

When three buttons in the operation unit 140 are pressed, the frequency change signal detection unit 151 detects this and transmits the same to the central processing unit 156. That is, the frequency change signal detection unit 151 detects that the user simultaneously presses three buttons in the operation unit 140 as the frequency change signal.

When the frequency change signal is detected, the CPU 156 stops driving the timers 153a to 153d in the timer unit 153 through the timer driver 152. As noted herein, the timers 153a to 153d have different operation time values. In other words, since the operation speed is different, assuming 8 bits as one cycle, even if four timers are started at the same time, they are shifted to substantially different values. Therefore, since the value of four timers can obtain about 3 billion different values, the number of frequencies that can be changed relatively can be set correspondingly, so that it can adequately cope with nearby eavesdropping, electromagnetic waves or radio wave interference. It becomes possible.

When the timer is turned off, the frequency change code reading unit 154 reads the current state value of each timer 153a to 153d in the timer unit 153 and transfers it to the central processing unit 156 as a frequency change code. The device 156 controls the frequency change data generator 155 to insert a frequency change code into a portion of the transmission data.

The frequency change data generation unit 155 generates the transmission data including the frequency change code data transmitted from the central processing unit 156 and provides it to the RF transmitter 180. Here, as is well known in the transmission data, there is a mouse data code area of a predetermined bit in which the mouse data is recorded and a control code ID area in which the control code ID data is recorded, of which the frequency change is applied to the last two bits of the control code ID area. Informing data is recorded, and a frequency change code indicating a frequency to be changed is recorded in the remaining area of the control code ID.

The transmission data including the frequency change data and the frequency code data to be changed are converted into a 2.4 GHz RF signal by the RF transmitter 180 and transmitted through the transmission antenna 181. The transmitter automatically changes to the frequency corresponding to the frequency change code, and each timer is also driven again.

The RF receiver 230 of the receiver receives the radio signal transmitted from the transmitter, demodulates the original signal, and provides the digital signal to the controller 240 as digital data.

The controller 240 analyzes the received data and transmits the received mouse data to a computer connected by wire through the communication interface 220 when general mouse data is obtained. On the contrary, if the data indicates the frequency change, the frequency change code data is extracted from the received data and transmitted to the frequency change unit 157, and the frequency change unit 157 uses the current set frequency as the frequency corresponding to the frequency change code. Will change.

When the frequency change process is completed, the transmitter and the receiver transmit and receive wireless data through the newly set frequency band.

On the other hand, the wireless optical mouse according to the present invention can control the power supply of the computer using a mouse. Until now, the mouse has only a simple function of transmitting only a signal operated by a user to the computer, but the wireless optical mouse according to the present invention can control the power of the computer only by changing the operation of the key provided in the operation unit 140. . For example, when the left button and the right button are simultaneously pressed for a predetermined time or more, the controller 150 recognizes the power control and transmits the received data as a radio signal through the RF transmitter 180. The RF receiver 230 of the receiver receives a radio signal, demodulates it into an original signal, converts it into digital data, and transmits the digital signal to the controller 240. The controller 240 analyzes this and transmits the mouse data to the connected computer. The data will be sent.

The computer analyzes the transmitted data and if it is power control data, it automatically terminates the currently running program and turns off the main power. Here, if the power control data is made identical to the data generated when the user operates the power button mounted on the computer main body, the computer main body can be easily processed without any additional circuit change or structural change.

4 is a flowchart illustrating a transmission process of a method of changing a frequency of a wireless optical mouse according to the present invention. Herein, the transmission process means a control process performed in the transmission apparatus.

As shown therein, a first step (S101) of checking whether the charging terminal is separated; A second step (S103 to S105) of setting a frequency through a frequency setup process and transmitting data at the set frequency when the check result is departure from the charging terminal; A third step (S107) of driving a frequency code setting timer after frequency setting; A fourth step (S109) of checking whether a frequency change signal is detected after the timer is driven; A fifth step (S113 to S115) of stopping the driven timer when the frequency change signal is detected and reading the frequency code value; A sixth step (S117 to S119) of generating frequency change data using the read frequency code value and wirelessly transmitting it to the receiving device; A seventh step (S121 to S125) of automatically changing a frequency and transmitting mouse data at the changed frequency when a predetermined time elapses after the frequency change data is sent; If it is not the frequency change signal includes the step of performing a general mouse function (S111).

Looking at the transmission process made in this way, in step S101 to check whether the departure from the charging terminal, if the departure from the charging terminal, go to step S103 to set the frequency through the frequency set-up process, the data at the frequency set in step S105 Will be sent. In this case, the frequency setup process has been sufficiently described in the description of the above-described transmission apparatus, and thus will be omitted to avoid duplication.

In step S107, the frequency code setting timer is driven after setting the frequency. In step S109, it is checked whether the frequency change signal is detected. Here, the detection of the frequency change signal may be detected by the operation of three buttons (right button, left button, scroll wheel button) in the operation unit 140. If the frequency change signal is not detected as a result of this check, the process moves to step S111 to execute a general mouse function.

On the contrary, if the frequency change signal is detected as a result of checking in step S109, the timer is moved to step S113 to stop, the frequency code data is read out in step S115 and the frequency change data is generated using the read frequency code value in step S117. Wireless transmission to the receiving device.

In step S121 and step S122, the frequency is automatically changed when a predetermined time elapses after the frequency change data is sent. In step S125, the mouse data is transmitted at the changed frequency.

5 is a flowchart illustrating a receiving process of a method of changing a frequency of a wireless optical mouse according to the present invention. In this case, the reception process refers to a control process performed in the reception apparatus.

As shown therein, a first step S201 of setting a frequency to an initial set frequency; A second step (S203) of analyzing the radio signal at the set frequency; A third step (S205) of delivering the received data to a connected computer if the analysis result of the received data is general mouse data; A fourth step of extracting a frequency change code from the received data if the frequency change data is analyzed and performing automatic frequency change to a frequency corresponding to the extracted frequency change code (S207). , S213, S215); If it is not the frequency change data is made of the mouse data and the mouse data transfer step (S209 ~ S211).

Referring to the reception process performed in this way, in step S201 the frequency is set to the initial set frequency, and in step S203 it is confirmed whether the radio signal is received at the set frequency. As a result of the confirmation, when the wireless signal is received, the received wireless signal is analyzed in step S205. When the result of the analysis is recognized as the general mouse data as in step S209, the controller proceeds to step S211 and delivers the received data to the connected computer. .

In addition, if the result of analyzing the received data as in step S207 is the frequency change data, go to step S213 to extract a frequency change code from the received data, and performs the automatic frequency change to a frequency corresponding to the extracted frequency change code, In step S215, data is received at the changed frequency.

In other words, if a receiver malfunctions due to interference or interference caused by the use of a wireless optical mouse of the same band around the wireless optical mouse, or if the recognition speed of the mouse operation signal is slow, simply press only three buttons simultaneously. If it is possible to change to another frequency quickly, this prevents interference.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

According to the present invention described above, since the frequency can be easily changed during use, it provides an optimal wireless optical mouse that is not affected by factors such as interference or interference by other wireless optical mice using the same frequency band. It works.

In addition, since the power control of the computer can also be performed using the wireless optical mouse according to the present invention, there is also an advantage to improve the function of the wireless optical mouse.

Claims (11)

In the frequency changer of the wireless optical mouse, A transmitter for generating a frequency change code and frequency change data and transmitting them wirelessly when a frequency change signal is detected while the wireless optical mouse is in use, and automatically changing the frequency to a frequency corresponding to the generated frequency change code; And a charging and receiving device for automatically changing a frequency according to the frequency change data transmitted from the transmitting device to receive wireless data and transferring the received wireless data to a connected computer main body. Frequency change device of the mouse. The method of claim 1, wherein the transmitting device, An operation unit for inputting the frequency change signal; A control unit which controls the entire operation of the apparatus and generates a frequency change code when the frequency change signal is input by the operation unit, and generates and outputs frequency change data including the generated frequency change code; And an RF transmitter for modulating the frequency change data output from the controller into a radio frequency signal (RF signal) and transmitting the radio frequency signal through a transmission antenna. The method of claim 2, wherein the control unit, A frequency change signal detection unit detecting a frequency change signal manipulated by a user; A timer driver for controlling driving of the timer according to the timer driving control signal; A timer unit whose operation is controlled in response to the control of the timer driver; A frequency change code reading unit reading a timer value obtained when the timer unit stops operating with a frequency change code; A central processing unit controlling the timer driver according to an output signal of the frequency change signal detector and controlling generation and frequency change of frequency change data by using a frequency change code read by the frequency change code reader when the frequency change signal is detected; Wow; A frequency change data generation unit generating frequency change data using the frequency change code according to the control of the CPU; And a frequency changer for changing a frequency according to the control of the central processing unit. 4. The apparatus of claim 3, wherein the timer unit comprises at least two timers. 4. The apparatus of claim 3, wherein the frequency changer comprises a memory in which change frequency data corresponding to a frequency change code is stored. The apparatus of claim 2, wherein the operation unit further includes a function of sensing a power control signal of a computer, and the CPU controls the transmission data to be transmitted by adding power control data to transmission data when the power control signal is detected. The apparatus for changing the frequency of a wireless optical mouse, further comprising a function to. The method of claim 1, wherein the receiving device, A communication interface unit connected to the computer main body by wire to interface data; An RF receiver for receiving data wirelessly transmitted from the transmitter; A control unit which controls the entire operation of the receiver, extracting frequency change data from data received by the RF receiver; And a frequency changer for changing the frequency of the RF receiver in response to the control of the controller. In the frequency change method of the wireless optical mouse, If the transmitter is separated from the charging terminal, set the transmission / reception frequency, and if the frequency change signal is detected while the wireless optical mouse is in use, generate the frequency code and the frequency change data to be transmitted as a wireless signal, and respond to the changed frequency code. A transmission process for automatically changing to a frequency to be performed; Receives and analyzes the transmitted radio signal, and transmits the corresponding data to the connected computer in the case of general mouse data, and extracts the frequency change code from the received data and automatically changes to the corresponding frequency in the case of the frequency change data. Method for changing the frequency of a wireless optical mouse, characterized in that it comprises a receiving process. The method of claim 8, wherein the transmission process, Checking a departure from the charging terminal; A second step of setting a frequency through a frequency setup process and transmitting data at the set frequency when the check result is a departure from the charging terminal; Driving a frequency code setting timer after setting the frequency; A fourth step of checking whether a frequency change signal is detected after the timer is driven; A fifth step of stopping the driven timer and reading a frequency code value when a frequency change signal is detected as a result of the checking; A sixth step of generating frequency change data using the read frequency code value and wirelessly transmitting it to a receiving device; And a seventh step of automatically changing a frequency when a predetermined time has elapsed after transmitting the frequency change data, and transmitting mouse data at the changed frequency. The method of claim 9, wherein the frequency set up process, A frequency change code is generated by reading a timer value that stops driving upon departure from a charging terminal, and transmitting frequency change data including the frequency change code to a receiving device to set a frequency to be transmitted and received to each other. How to change the frequency of an optical mouse. The method of claim 8, wherein the receiving process, A first step of setting a frequency to an initial set frequency; A second step of analyzing the radio signal at the set frequency; A third step of transmitting the received data to a connected computer if the analysis result of the received data is general mouse data; A fourth step of extracting a frequency change code from the received data when the frequency change data is analyzed, performing automatic frequency change to a frequency corresponding to the extracted frequency change code, and receiving data at the changed frequency; Frequency changing method of a wireless optical mouse comprising a.

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