TW201933059A - Active Touch Pen and wireless signal generating method thereof capable of shortening overall time for transmitting a wireless signal - Google Patents

Abstract

The present invention relates to an active Touch Pen and a wireless signal generating method thereof. After sending a first beacon signal, the active Touch Pen determines whether a first button signal or a second button signal is generated. When both of the first and second button signals are generated, the active Touch Pen generates a first button-sending signal according to a first frequency, generates a second button-sending signal according to a second frequency, and sends the first and second button-sending signals. The first and second button-sending signals have different frequencies. Therefore, when a receiving end receives the first and second button-sending signals, the first and second button-sending signals that are simultaneously sent can be separated by filtering. In this way, the overall time for sending the first and second button-sending signals can be shortened, and thereby the wireless signal is sent rapidly.

Description

Active stylus and wireless signal generating method thereof

The invention relates to a stylus and a wireless signal generating method, in particular to an active stylus and a wireless signal generating method thereof.

Generally, the active stylus sends a wireless signal to a tablet computer or a smart phone through wireless communication to wirelessly communicate with the tablet or the smart phone to determine the user's active stylus. The above operation, for example, the user can press a button provided on the active stylus to perform a specific operation, such as performing the function of the previous page or the next page.

The wireless signal transmission method of the existing wireless communication technology generally transmits various kinds of information in batches in a time-sequential manner by means of time division multiplexing, for example, a transmitting end sends a start information first at the beginning. The wireless signal represents various information in the wireless signal to be sent next, and then sends the wireless signal with the first information. When the wireless signal with the first information is sent, and after a time interval, the second signal is sent again. The wireless signal of the information, and so on, until all the information is sent, and finally send a wireless signal with the end information, indicating that the information is completely transmitted, thereby forming a transmission cycle.

The receiving end continuously receives the wireless signal, and when it is determined that the received wireless signal has the starting information, it represents various information in the next wireless signal, and can be based on the time interval from the starting information. To calculate the various information that is available in the wireless signal. For example, immediately after the start information, the first information, then the second information, and so on. In this way, the wireless terminal can communicate with the receiving end and the receiving end.

However, in the wireless signal transmission method of the existing wireless communication technology, when a large amount of data is transmitted, due to the large amount of data, each data must be transmitted in a considerable amount of time, resulting in slow data transmission. Therefore, the method of wireless signal transmission of the existing wireless communication technology needs to be further improved.

In view of the shortcomings of the wireless signal transmission method of the existing wireless communication technology, when the transmission of a large amount of data takes too long and the transmission speed is slow, the present invention provides a wireless signal generation method for the active stylus to quickly transmit the wireless signal. . The wireless stylus generating method of the active stylus is performed by an active stylus and includes the following steps: generating and transmitting a first beacon signal; waiting for a first time interval; determining whether a first one is generated a button signal or a second button signal; when it is determined that the first button signal and the second button signal are generated, generating a first button sending signal according to a first frequency, and generating a second button according to a second frequency Sending a signal and transmitting the first button sending signal and the second button sending signal.

The active stylus includes a first button unit, a second button unit, a wireless signal transmitting unit, and a processing unit. The first button unit is configured to generate a first button signal. The second button unit is configured to generate a second button signal.

The processing unit is electrically connected to the first button unit, the second button unit, and the wireless signal sending unit, and the processing unit generates a first beacon signal, and sends the first beacon through the wireless signal sending unit. Signal.

After the processing unit sends the first beacon signal, the processing unit waits for a first time interval, and determines whether a first button signal generated by the first button unit or a second button unit is generated. The second button signal.

When the processing unit receives the first button signal and the second button signal, the processing unit sends a composite signal, where the composite signal includes a first button sending signal generated according to a first frequency, and according to a first A second button generated by the second frequency transmits a signal.

The active stylus and the wireless signal generating method thereof are characterized in that the composite signal comprises a first button sending signal generated at a first frequency and a second button generating signal generated by using a second frequency, and the composite signal is sent . When a receiving end, such as a tablet computer, receives the composite signal, the first button sends a signal and the second button transmits a signal at a different frequency, so that the first button can be sent and transmitted simultaneously by filtering. The second button sending signal is separately opened, and then the corresponding function is performed according to the first button sending signal and the second button sending signal.

In this way, even if the first button sending signal and the second button sending signal are simultaneously sent, the receiving end can separately open the first button sending signal and the second button sending signal, and because the first button The sending signal and the second button sending signal are sent simultaneously, and need to be sent in time-division, which can further shorten the overall sending time of sending the first button sending signal and the second button sending signal, thereby quickly transmitting the wireless signal.

The technical means adopted by the present invention for achieving the intended purpose are further explained below in conjunction with the drawings and preferred embodiments of the present invention.

Referring to FIG. 1 , the present invention is an active stylus and a wireless signal generating method thereof. The wireless stylus generating method of the active stylus is performed by an active stylus, and the active touch is performed. The first preferred embodiment of the wireless signal generating method of the pen performs the following steps: generating and transmitting a first beacon signal (S101); waiting for a first time interval (S102); determining whether Generating a first button signal or a second button signal (S103); when it is determined that the first button signal and the second button signal are generated, transmitting a composite signal, where the composite signal includes generating according to a first frequency A first button sends a signal and a second button sends a signal according to a second frequency (S104).

As shown in FIG. 2, it is only used to describe two beacon signals 11 sent at different time points, and the beacon signal 11 represents a signal at the beginning of a transmission period. In the preferred embodiment, the transmission time t _{11 of the} beacon signal 11 may be 1 millisecond (ms), and the transmission period t ₁₂ may be 7.2 milliseconds (ms).

3, only to further illustrate the first time of each beacon signal of a composite signal after 11 12, when the active stylus after transmitting the beacon signal 11, based latency t _31, and When the first button signal and the second button signal are generated, the composite signal 12 is sent, and the composite signal 12 includes the first button sending signal and the second button sending signal. In the preferred embodiment, the first time interval t ₃₁ is 0.032 milliseconds (ms), the first frequency is 18 Hertz (Hz), and the second frequency is 31 Hertz (Hz), and the composite signal 12 is sent. The time t ₁₂ is the same as the transmission time t _{11 of the} beacon signal 11, and is 1 millisecond (ms).

The wireless signal generating method of the active stylus of the present invention generates the first button sending signal by using the first frequency, and generates the second button sending signal by using the second frequency, and simultaneously transmitting the first button The button sends a signal and the second signal of the second button sends a signal. When a receiving end, such as a tablet computer, receives the composite signal 12, since the first button sending signal and the second button sending signal have different frequencies, the first of the composite signals 12 can be filtered. The button sending signal and the second button sending signal are respectively opened.

In this way, the first button transmission signal and the second button signal need not be separated to be transmitted through two transmission times, and the composite signal 12 is transmitted only after one transmission time t ₁ , which can further save the transmission. A button sends a signal and the second button transmits the overall time of the signal, thereby quickly transmitting the wireless signal.

For example, the active stylus is provided with a first button unit and a second button unit for performing different functions respectively, and when the first button unit is pressed, the active touch The pen will generate the first button signal. Similarly, when the second button unit is pressed, the active stylus generates the second button signal. In general, the user can directly use the active stylus to perform touch operations on the touch display panel of the receiving end, such as moving pictures, clicking links, and the like. When the user presses the first button unit, the receiving end switches modes, and the touch operation of the active stylus on the touch display panel of the receiving end becomes recorded and displayed. The user's handwriting, in short, is that the user can draw or record notes on the touch display panel of the receiving end. In addition, when the user presses the second button unit, the receiving end switches the mode again. At this time, the touch operation of the active stylus on the touch display panel of the receiving end is It becomes a way to remove the user's handwriting. In short, the user can use an eraser-like function to remove the notes, thereby providing a user-friendly environment for the user to quickly switch between recording notes and moving pictures. And can quickly remove the mistaken notes to re-record.

In other words, the active stylus detects the pressing state of the first button unit and the second button unit of the active stylus in one transmission cycle, and generates the first button signal according to the detection result or the The second button signal. For example, when the user presses the first button unit for more than one transmission period, the active stylus can detect that the first button unit is pressed during the sending period, and correspondingly generate the first button signal. . However, since the transmission period is relatively short, for example, 7.2 milliseconds, as long as the user has pressed the first button unit, the time until the first button unit is released is substantially longer than the transmission period, so In terms of use, it is not necessary to continuously press the first button unit. Similarly, when the user presses the second button unit, it is determined in the same manner whether the second button signal is generated.

That is to say, when the user simultaneously presses the first switch unit and the second switch unit and continues to exceed the transmission period, the active stylus generates and transmits the composite signal. When the receiving end receives the composite signal, the user can simultaneously press the first switch unit and the second switch unit, and the receiving end can perform a specific signal according to the first button sending signal and the second button sending signal. Status, such as turning on or off the touch panel of the receiving end.

Referring to FIG. 4 and FIG. 5, a second preferred embodiment of the method for generating a wireless signal of the active stylus is that the active stylus sends the first button sending signal and the second button sending signal. After the step (S104), the active stylus further performs the following steps: waiting for a second time interval (S105); reading a pressure value signal (S106); determining whether the pressure value signal is greater than a threshold (S107) When the pressure value signal is greater than the threshold value, generating a first data segment transmission signal and a second data segment transmission signal according to the pressure value signal, and transmitting the first data segment transmission signal (S108); waiting for a first Three time intervals (S109); generating and transmitting a second beacon signal (S110); waiting for a fourth time interval (S111); transmitting the second data segment transmission signal (S112); waiting for a fifth time interval ( S113), step S101 is re-executed.

As shown in FIG. 6, when the active stylus sends the first beacon signal 111, it waits for the first time interval, and when the first button signal and the second button signal are generated, the composite signal 12, and the active stylus after transmitting the composite signal 12, which is further waits a second time interval t _32, and then transmits the first data signal transmission segment 131. In the preferred embodiment, the second time interval t ₃₂ is 1.568 milliseconds (ms). Then, the active stylus waits for the third time interval t ₃₃ , transmits the second beacon signal 112, and waits for the fourth time interval t ₃₄ to transmit the second data segment transmission signal 132. In the preferred embodiment, the first beacon signal 111 is identical to the second beacon signal 112 and is only used to describe two consecutive beacon signals 11. The third time interval t ₃₃ is 2.6 milliseconds, and the fourth time interval t ₃₄ is 3.6 milliseconds (ms). Finally, the active stylus further wait for the fifth time interval t _(35), re-transmitting the first beacon signal 111 (not shown). In the preferred embodiment, the fifth time interval t ₃₅ is 2.6 milliseconds (ms), and the first data segment transmission signal 131 and the second data segment transmission signal 132 transmission time t _{13 are both} associated with the beacon signal. The transmission time t11 of _{11 is the} same, and each is 1 millisecond (ms). The manner in which the first and second data segment transmission signals 131 and 132 are generated will be described later.

In addition, as shown in FIG. 6, after transmitting the second beacon signal 112, the active stylus may repeatedly transmit the composite signal 12 before transmitting the second data segment transmission signal 132. That is, when the active stylus transmits the signal after the second beacon 112, in the first waiting time interval after t _31, the first repeat of the composite transmission signal 12, and further waits for the second time interval t _{After 32} , the second data segment transmission signal 132 is sent again. During the transmission of the wireless signal, it is susceptible to the external environment. Therefore, sometimes the receiving end does not receive the wireless signal, and by repeatedly transmitting the composite signal 12, the receiving end may reduce the probability of receiving the composite signal 12. .

The method for generating the wireless signal of the active stylus is to send the active stylus to send the composite signal 12, further read the pressure signal, and determine whether the pressure signal is greater than the threshold. When the pressure value signal is greater than the threshold value, it indicates that the pressure value signal is valid. In other words, the user should be operating the active stylus to perform a touch operation, and the active stylus can sense the touch pressure of the user operating the active stylus, in short, using The operating force of the active stylus is operated.

When the pressure value signal is greater than the threshold value, the active stylus generates the first data segment transmission signal 131 and the second data segment transmission signal 132 according to the pressure value signal. And the active stylus sends the first data segment transmission signal 131 and the second data segment transmission signal 132 respectively in two consecutive transmission periods, before the first transmission period, that is, when the first After the beacon signal 111 is sent, the first data segment transmission signal 131 is sent, and is sent in the next transmission period, that is, after the second beacon signal 112 is transmitted, and the fourth time interval t ₃₄ is transmitted. The second data segment transmits a signal 132, thereby transmitting a higher resolution pressure value signal.

Since the pressure value signal is generated according to the operating condition of the user, and the size range of the writing force when the user operates the active stylus is very different, if only the pressure value signal with low resolution is transmitted, the receiving will result in receiving. The terminal cannot accurately obtain the accurate writing force when the user operates the active stylus, thereby reducing many application levels, such as imitating the writing of soft pen characters.

The wireless stylus generating method of the active stylus is to transmit the signal by dividing the pressure value signal into two data segments and transmitting them in two consecutive transmission periods. In this way, the pressure value signal can be divided into two parts, and the receiving end can send the first data piece after receiving the first data piece sending signal and the second data piece sending signal. The signal and the second data segment transmission signal are combined into the pressure value signal, thereby obtaining a high-resolution pressure value signal and providing more applications.

For example, the pressure value signal is a 12-bit data, and the wireless signal generation method of the active stylus generates a first data segment according to the value of the first 8 bits in the pressure value signal, and A second piece of data is generated based on the value of the last 4 bits in the pressure value signal.

The active stylus generates the first data segment transmission signal at a specific frequency according to the value of the first data segment, and the active stylus is based on the value of the second data segment to another The second data segment transmission signal is generated at a specific frequency. That is to say, the value of each first data segment corresponds to a specific frequency, and the value of each second data segment also corresponds to a specific frequency. When the receiving end receives the first data segment transmission signal or the second data segment transmission signal, the receiving end may calculate the value of the first data segment or look up the table according to the frequency of the received signal. The value of the second data fragment.

For example, when the value of the first data segment is 00000001, the active stylus generates the first data segment transmission signal at a frequency of 15652 Hz, and when the value of the first data segment is 00000010. The active stylus generates the first data segment transmission signal at a frequency of 15679 Hertz (Hz). In addition, when the value of the second data segment is 0001, the active stylus generates the second data segment transmission signal at a frequency of 28301 Hertz (Hz), and when the value of the second data segment is 0010, The active stylus generates the second data segment transmission signal at a frequency of 28571 Hertz (Hz).

In the preferred embodiment, the first data segment transmission signal and the second data segment transmission signal are distributed in different frequency bands.

The first data segment transmission signal and the second data segment transmission signal are distributed in different frequency bands. When the receiving end receives the wireless signal, the receiving terminal can directly determine, according to the frequency value of the wireless signal, which frequency band the wireless signal falls within. Then, it can be confirmed whether the wireless signal transmits the signal for the first data segment or the second data segment.

Therefore, even if the first data segment transmission signal and the second data segment transmission signal are sent in different transmission periods, it is not necessary to specifically determine the number of the transmission period, and the first data segment may be directly sent according to the frequency value. The signal is still the second data segment sending signal. For the receiving end, only two consecutive transmission period signals are received, and a complete pressure value signal can be generated, so that the processing efficiency of the judgment can be further improved.

When the receiving end receives the first data segment transmission signal and the second data segment transmission signal, the frequency value of the first data segment transmission signal and the second data segment transmission signal may be determined through Fourier transform, and Transmitting the value of the first data segment and the value of the second data segment according to the frequency value of the first data segment transmission signal and the second data segment transmission signal, and the receiving end may further use the value of the first data segment And the value of the second data segment integrates the pressure value signal.

For example, when the frequency of the first data segment transmission signal received by the receiving end is 15679 Hz, the value of the first data segment can be calculated as 00000010, and the second data segment received by the receiving end When the frequency of the transmitted signal is 28571 Hertz (Hz), the value of the first data segment can be calculated as 0010. The receiving end may integrate the value of the first data segment and the value of the second data segment to form a value of the pressure value signal of 000000100010.

That is to say, the pressure value signal has 4096 different values, so that the writing force when the user operates the active stylus can be divided into 4096 different values, and can be accurately transmitted to the receiving end. The receiving end analyzes and determines the writing power when the user operates the active stylus.

Further, when the active stylus determines whether the pressure value signal is greater than a threshold value (S107), and the active stylus judges that the pressure value signal is not greater than the threshold value, the active stylus Waiting for a sixth time interval (S1071), and repeating step S101.

Since the pressure value signal generated by the user should not operate the touch pen when the pressure value signal is not greater than the threshold value, the pressure signal generated at this time should be misjudged, so the active stylus does not execute any The action only waits for the sixth time interval to re-execute the wireless signal generating method of the active stylus.

Referring to FIG. 7 , when the active stylus judges that the first button signal is not generated, but the second button signal is generated, the active stylus generates the second button according to the second frequency. After transmitting the signal and transmitting the second button transmission signal (S1031), step S105 is performed.

In addition, when the active stylus judges that the first button signal and the second button signal are not generated, the active stylus waits for a seventh time interval (S1032), and executes step S106.

As shown in FIG. 8, when the active stylus sends the first beacon signal 111 and determines that the first button signal and the second button signal are not generated, the active time stylus waits for the seventh time interval t37 _. Sending the first data segment sending signal 131. In the preferred embodiment, the seventh time interval _t37 is 2.6 milliseconds (ms). Then, the active stylus waits for the third time interval t ₃₃ , transmits the second beacon signal 112, and waits for the fourth time interval t ₃₄ to transmit the second data segment transmission signal 132. Finally, the active stylus further wait for the fifth time interval t _(35), re-transmitting the first beacon signal 111 (not shown).

Further, as shown in FIG. 9, when the active stylus judges that the first button signal is generated, but the second button signal is not generated, the active stylus generates the first frequency according to the first frequency. After the first button sends a signal and sends the first button to send a signal (S1033), step S105 is performed.

As shown in FIG. 10 , the active stylus 20 includes a first button unit 21 , a second button unit 22 , a wireless signal transmitting unit 23 , and a processing unit 24 . The first button unit 21 is configured to generate a first button signal. The second button unit 22 is configured to generate a second button signal. For example, the first button unit 21 and the second button unit 22 can be physical buttons on the active stylus pen 20.

The processing unit 24 is electrically connected to the first button unit 21, the second button unit 22, and the wireless signal sending unit 23, and the processing unit 24 generates a first beacon signal and passes through the wireless signal sending unit 23. Send the first beacon signal.

After the processing unit 24 sends the first beacon signal, the processing unit 24 waits for a first time interval, and determines whether a first button signal or the second button unit generated by the first button unit 21 is received. 22 generates a second button signal.

When the processing unit 24 receives the first button signal and the second button signal, the processing unit 24 sends a composite signal, where the composite signal includes a first button transmission signal generated according to a first frequency, and according to A second button generated by the second frequency transmits a signal.

The active stylus of the present invention generates the first button transmission signal by using the first frequency, and generates the second button transmission signal by using the second frequency, and simultaneously sends the first button transmission signal and the second Press the button to send a signal. When a receiving end, such as a tablet computer, receives the first button sending signal and the second button sending signal, since the first button sending signal and the second button sending signal have different frequencies, the filtering may be The first button sending signal and the second button sending signal sent simultaneously are respectively opened.

In this way, even if the first button sending signal and the second button sending signal are simultaneously sent, the receiving end can separately open the first button sending signal and the second button sending signal, and because the first button The sending signal and the second button sending signal are sent simultaneously, and need to be sent in time sharing, which can further save the overall sending time of sending the first button sending signal and the second button sending signal, thereby quickly transmitting the wireless signal.

The active stylus further includes a pressure sensing unit 25 for generating a pressure value signal and electrically connected to the processing unit 24. After the processing unit 24 sends the composite signal, the processing unit 24 waits for a second time interval and reads the pressure value signal, and the processing unit 24 determines whether the pressure value signal is greater than a threshold value.

When the processing unit 24 determines that the pressure value signal is greater than the threshold value, the processing unit 24 generates a first data segment transmission signal and a second data segment transmission signal according to the pressure value signal, and passes the wireless signal sending unit 23 Send the first data segment to send a signal.

After the processing unit 24 sends the first data segment transmission signal, the processing unit 24 waits for a third time interval and generates a second beacon signal, and the processing unit 24 sends the second data signal through the wireless signal sending unit 23. Second beacon signal.

After the processing unit 24 sends the second beacon signal, the processing unit 24 waits for a fourth time interval, and sends the second data segment transmission signal, and the processing unit 24 waits for a fifth time interval. The first beacon signal is regenerated. In the preferred embodiment, the first data segment transmission signal and the second data segment transmission signal are distributed in different frequency bands.

The function and principle of the pressure value signal are described in the wireless signal generating method of the active stylus, and therefore will not be described herein.

When the processing unit 24 determines that the pressure value signal is not greater than the threshold value, the processing unit 24 waits for a sixth time interval and regenerates the first beacon signal.

When the processing unit 24 does not receive the first button signal, but receives the second button signal, the processing unit 24 generates the second button sending signal according to the second frequency, and sends the signal through the wireless signal sending unit 23. The second button sends a signal, and the processing unit 24 waits for the second time interval, reads the pressure value signal, and determines whether the pressure value signal is greater than the threshold value.

When the processing unit 24 does not receive the first button signal and the second button signal, the processing unit 24 waits for a seventh time interval to read a pressure value signal, and the processing unit 24 determines the pressure value signal. Whether it is greater than the threshold value.

When the processing unit 24 receives the first button signal but does not receive the second button signal, the processing unit 24 generates the first button sending signal according to the first frequency, and sends the signal through the wireless signal sending unit 23. The first button sends a signal, and the processing unit 24 waits for the second time interval, reads the pressure value signal, and determines whether the pressure value signal is greater than the threshold value.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention. A person skilled in the art can make some modifications or modifications to equivalent embodiments by using the above-disclosed technical contents without departing from the technical scope of the present invention, but the present invention does not deviate from the technical solution of the present invention. Technical Substantials Any simple modifications, equivalent changes and modifications made to the above embodiments are still within the scope of the technical solutions of the present invention.

11‧‧‧Beacon signal

111‧‧‧First Beacon Signal

112‧‧‧second beacon signal

12‧‧‧Complex signal

131‧‧‧The first data segment sends a signal

132‧‧‧Second data segment sending signal

20‧‧‧Active stylus

21‧‧‧First button unit

22‧‧‧Second button unit

23‧‧‧Wireless signal sending unit

24‧‧‧Processing unit

25‧‧‧ Pressure sensing unit

1 is a schematic flow chart of a method of a first preferred embodiment of a method for generating a wireless signal of an active stylus according to the present invention. 2 and FIG. 3 are waveform diagrams of wireless signals generated by the wireless signal generating method of the active stylus according to the present invention. 4 and FIG. 5 are schematic diagrams showing the method of the second preferred embodiment of the wireless signal generating method of the active stylus according to the present invention. FIG. 6 is a schematic diagram showing the waveform of a wireless signal generated by the wireless signal generating method of the active stylus of the present invention. FIG. 7 is a schematic flow chart of a method of a third preferred embodiment of a method for generating a wireless signal of an active stylus according to the present invention. FIG. 8 is a schematic diagram showing the waveform of a wireless signal generated by the wireless signal generating method of the active stylus according to the present invention. FIG. 9 is a schematic flow chart of a method of a fourth preferred embodiment of a method for generating a wireless signal of an active stylus according to the present invention. FIG. 10 is a block diagram showing a preferred embodiment of the active stylus of the present invention.

Claims (14)

A method for generating a wireless signal of an active stylus is performed by an active stylus: a. generating and transmitting a first beacon signal; b. waiting for a first time interval; c. determining whether a a first button signal or a second button signal; d. when it is determined that the first button signal and the second button signal are generated, sending a composite signal, the composite signal includes a first one generated according to a first frequency The first button sends a signal and a second button sends a signal according to a second frequency. The method for generating a wireless signal of the active stylus according to claim 1, wherein after the step d is performed, the active stylus further performs the following steps: e. waiting for a second time interval; f. reading Taking a pressure value signal; g. determining whether the pressure value signal is greater than a threshold value; h. when the pressure value signal is greater than the threshold value, generating a first data segment transmission signal and a second data according to the pressure value signal The segment sends a signal and sends the first data segment to send a signal; i. waits for a third time interval; j. generates and sends a second beacon signal; k. waits for a fourth time interval; l. sends the second time interval The data segment sends a signal; m. After waiting for a fifth time interval, repeat step a. The method for generating a wireless signal of the active stylus according to claim 2, wherein the first data segment transmission signal and the second data segment transmission signal are distributed in different frequency bands. The method for generating a wireless signal of the active stylus according to claim 2, further comprising the steps of: waiting for a sixth time interval after the pressure value signal is not greater than the threshold, and performing step a again . The method for generating a wireless signal of the active stylus according to claim 1 further includes the following steps: when it is determined that the first button signal is not generated, but the second button signal is generated, generating according to the second frequency After the second button sends a signal and sends the second button to send a signal, step f is performed. The method for generating a wireless signal of the active stylus according to claim 1 further includes the following steps: when it is determined that the first button signal and the second button signal are not generated, waiting for a seventh time interval , go to step g. The method for generating a wireless signal of the active stylus according to claim 1 further includes the following steps: when determining that the first button signal is generated but the second button signal is not generated, generating according to the first frequency After the first button sends a signal and sends the first button to send a signal, step f is performed. An active stylus includes: a first button unit for generating a first button signal; a second button unit for generating a second button signal; a wireless signal transmitting unit; a processing unit The system is electrically connected to the first button unit, the second button unit, and the wireless signal sending unit, and the processing unit generates a first beacon signal, and sends the first beacon signal by using the wireless signal sending unit; After the processing unit sends the first beacon signal, the processing unit waits for a first time interval, and determines whether a first button signal generated by the first button unit or the second button unit is generated. a second button signal; wherein when the processing unit receives the first button signal and the second button signal, the processing unit sends a composite signal, where the composite signal includes a first button generated according to a first frequency a signal, and a second button generated according to a second frequency to transmit a signal. The active stylus according to claim 8 further comprising a pressure sensing unit for generating a pressure value signal and electrically connected to the processing unit; wherein: when the processing unit sends After the composite signal, the processing unit waits for a second time interval and reads the pressure value signal, and the processing unit determines whether the pressure value signal is greater than a threshold value; when the processing unit determines that the pressure value signal is greater than the When the threshold value is reached, the processing unit generates a first data segment transmission signal and a second data segment transmission signal according to the pressure value signal, and sends the first data segment transmission signal through the wireless signal sending unit; when the processing unit sends After the first data segment sends the signal, the processing unit waits for a third time interval and generates a second beacon signal, and the processing unit sends the second beacon signal through the wireless signal sending unit; After the unit sends the second beacon signal, the processing unit waits for a fourth time interval and sends the second data fragment. Signal, and the system waits for the processing unit after a fifth time interval, re-generating the first beacon signal. The active stylus according to claim 9, wherein the first data segment transmission signal and the second data segment transmission signal are distributed in different frequency bands. The active stylus according to claim 9, wherein: when the processing unit determines that the pressure value signal is not greater than the threshold value, the processing unit waits for a sixth time interval and regenerates the first beacon Signal. The active stylus according to claim 8, wherein: when the processing unit does not receive the first button signal but receives the second button signal, the processing unit generates the second according to the second frequency The button sends a signal, and the second signal transmission signal is sent by the wireless signal sending unit, and the processing unit waits for the second time interval, reads the pressure value signal, and determines whether the pressure value signal is greater than a threshold value; When the processing unit determines that the pressure value signal is greater than the threshold value, the processing unit generates a first data segment transmission signal and a second data segment transmission signal according to the pressure value signal, and sends the first data segment sending signal by using the wireless signal sending unit. a data segment transmits a signal; after the processing unit sends the first data segment transmission signal, the processing unit waits for a third time interval, and generates a second beacon signal, and the processing unit passes the wireless signal sending unit Transmitting the second beacon signal; after the processing unit sends the second beacon signal, the processing unit waits for a fourth time Interval, and transmits the second pieces of data transmission signals, and the processing unit after a fifth time interval to wait based regenerate the first beacon signal. The active stylus according to claim 8, wherein: when the processing unit does not receive the first button signal and the second button signal, the processing unit waits for a seventh time interval to read a pressure a value signal, and the processing unit determines whether the pressure value signal is greater than a threshold value; when the processing unit determines that the pressure value signal is greater than the threshold value, the processing unit generates a first data segment transmission signal according to the pressure value signal and a second data segment transmits a signal, and the first data segment transmission signal is sent by the wireless signal sending unit; after the processing unit sends the first data segment transmission signal, the processing unit waits for a third time interval, and Generating a second beacon signal, and the processing unit sends the second beacon signal by using the wireless signal sending unit; after the processing unit sends the second beacon signal, the processing unit waits for a fourth time interval. And sending the second data segment sending signal, and the processing unit waits for a fifth time interval to regenerate the first beacon signal The active stylus according to claim 8, wherein: when the processing unit receives the first button signal but does not receive the second button signal, the processing unit generates the first according to the first frequency The button sends a signal, and sends the first button sending signal through the wireless signal sending unit, and the processing unit waits for the second time interval, reads the pressure value signal, and determines whether the pressure value signal is greater than a threshold value; When the processing unit determines that the pressure value signal is greater than the threshold value, the processing unit generates a first data segment transmission signal and a second data segment transmission signal according to the pressure value signal, and sends the first data segment sending signal by using the wireless signal sending unit. a data segment transmits a signal; after the processing unit sends the first data segment transmission signal, the processing unit waits for a third time interval, and generates a second beacon signal, and the processing unit passes the wireless signal sending unit Transmitting the second beacon signal; after the processing unit sends the second beacon signal, the processing unit waits for a fourth time Interval, and transmits the second pieces of data transmission signals, and the processing unit after a fifth time interval to wait based regenerate the first beacon signal.