TW202119196A - Touch sensitive processing apparatus and method thereof and system for receiving electrical signals carrying pressure information - Google Patents

Abstract

A touch sensitive processing apparatus for receiving electrical signals carrying pressure information transmitted from a first stylus, comprising: a sensing circuit, configured for receiving the electrical signals via electrodes of a touch panel; and a processor, coupled to the sensing circuit, configured for: despreading a first preamble code of the received electrical signals in accordance with a pseudo-random number (PN) code in a first time period; despreading a second preamble code of the received electrical signals in accordance with the PN code in a second time period; and calculating the pressure information according to a first signal strength raio of a first part of the received electrical signal and a second part of the received electrical signal, wherein the first part comprises the first preamble code and the second part comprises the second preamble code.

Description

Touch processing device for receiving electrical signals carrying pressure information and processing method and system thereof

The present invention relates to a touch processing device, in particular to a touch processing device capable of receiving electrical signals carrying pressure information.

The touch panel or touch screen is an important modern human-machine interface. In addition to detecting approaching or touching the human body, the touch panel is also used to detect the approaching pen object or the tip of a stylus to facilitate The user more accurately controls the trajectory of the pen tip touch.

The pen-like object can use the tip of the pen to actively send out electrical signals, which is referred to as an active stylus in this article. When the pen tip is in close contact with the control panel, the electrodes on the touch panel are affected by electrical signals and have an electromagnetic response. By detecting the electromagnetic response corresponding to the electrical signal, it can be detected that the stylus is close to the sensing electrode, and the relative position of the pen tip and the touch panel can be known.

Accordingly, there is an urgent need for an active stylus capable of actively sending out electrical signals accurately under pressure.

From the above description, it is clear that the prior art still has shortcomings. In order to solve the above-mentioned problems, long-term efforts have not been successful. Ordinary products and methods cannot provide appropriate structures and methods. Therefore, the industry needs a new technology to solve the above-mentioned problems.

One of the characteristics of the present invention is to provide a stylus pen, which can transmit an electrical signal that can accurately represent the pressure applied to the stylus pen.

One of the objectives of the present invention is to provide a stylus pen that emits an electrical signal carrying pressure information, comprising: a first element having an impedance that responds to a pressure, wherein the first element is used to receive a first virtual disorder A first signal encoded by a digital code; a second element with a fixed impedance, wherein the second element is used to receive a second signal encoded with a second virtual random number; and a conductive pen tip segment for: simultaneously Receiving the first signal from the first element and receiving the second signal from the second element; and transmitting an electrical signal including the first signal and the second signal, wherein the first virtual random number is orthogonal to the first signal 2. Virtual chaotic digital.

In one embodiment, in order to provide the first virtual random number and the second virtual random number on the stylus, the stylus further includes a controller for generating the first virtual random number according to the first virtual random number. First signal; generating the second signal according to the second virtual random number; transmitting the first signal to the first element; and transmitting the second signal to the second element.

In one embodiment, in order to transmit the state of the sensor on the stylus, the stylus further includes: at least one sensor connected to the controller. The controller is further used for: generating a data code based on the state of the at least one upper sensor; generating a first data code based on the data code and the first virtual random number; and transmitting the first data code to the first element . The first element is further used for receiving the first data code from the controller. The conductive pen tip section is further used for: receiving the first data code from the first element; and transmitting the first data code.

In one embodiment, in order to transmit the state of the sensor on the stylus, the stylus further includes: at least one sensor connected to the controller. The controller is more used: According to the At least one data code is generated from the state of the upper sensor; a second data code is generated according to the data code and the second virtual random code; and the second data code is transmitted to the second element. The second element is further used for receiving the second data code from the controller. The conductive pen tip section is further used for: receiving the second data code from the second element; and transmitting the second data code.

In one embodiment, in order to synchronize with the receiving program of a touch processing device of a touch panel, the controller is further used to: receive a synchronization signal from an electronic device; and after receiving the synchronization signal, execute The generation step and the transmission step.

In one embodiment, in order to synchronize with the receiving program of the touch processing device of the touch panel close to the stylus, the controller is coupled to the conductive pen tip section to receive the synchronization signal, and the synchronization signal is generated by Emitted from the electrodes of a touch panel of the electronic device.

In one embodiment, in order to avoid the conflict of virtual random numbers when operating multiple stylus on a touch panel, the stylus further includes a man-machine interface for the user to input virtual random numbers, wherein the controller It is further used for receiving a setting command from the man-machine interface, which specifies a combination of the first virtual random number and the second virtual random number.

In one embodiment, in order to provide virtual random number information to the user, the stylus includes one of the following devices connected to the controller to indicate a combination of the first virtual random number and the second virtual random number : A visual effect indicator; and a sound effect indicator.

In one embodiment, for the wired connection between the touch processing device and the wired stylus, the stylus further includes: a first signal circuit coupled to the first element and a touch processing device for Propagating the first signal from the touch processing device to the first element; and a second signal circuit, coupled to the second element and the touch processing device, for propagating the second signal from the touch processing device To the second element.

In one embodiment, in order to provide a switch state to a touch processing device, the stylus further includes: a third switch for receiving the first signal; and a third element with a fixed impedance, coupled to The third switch and the conductive pen tip section, wherein the third switch can be selectively opened or closed. When the third switch is opened and closed, the first signal propagates from the conductive through the third switch and the third element The nib section.

In one embodiment, in order to provide a switch state to a touch processing device, the stylus further includes: a fourth switch for receiving the second signal; and a fourth element with a fixed impedance, coupled to The fourth switch and the conductive pen tip section, wherein the third switch can be selectively opened or closed, and when the fourth switch is closed, the second signal propagates from the conductive through the fourth switch and the fourth element The nib section.

One of the objectives of the present invention is to provide a method for sending an electrical signal carrying pressure information from a stylus, which includes: receiving a first element with an impedance that responds to a pressure encoded with a first virtual random number A first signal; a second element with a fixed impedance receives a second signal encoded with a second virtual random number; a conductive pen tip section simultaneously receives the first signal from the first element and from the second element Receiving the second signal; and transmitting an electrical signal including the first signal and the second signal from the conductive pen tip section, wherein the first virtual random number is orthogonal to the second virtual random number.

In one embodiment, in order to provide the first virtual random number and the second virtual random number on the stylus, the method further includes: generating the first signal according to the first virtual random number; and according to the second virtual random number. The pseudo random code generates the second signal; transmits the first signal to the first element; and transmits the second signal to the second element.

In one embodiment, in order to transmit the state of the sensor on the stylus, the method is more The method includes: generating a data code according to the state of the at least one upper sensor; generating a first data code according to the data code and the first virtual random number; transmitting the first data code to the first element; from the first element Transmitting the first data code to the conductive nib section; and transmitting the first data code from the conductive nib section.

In one embodiment, in order to transmit the state of the sensor on the stylus, the method further includes: generating a data code according to the state of the at least one upper sensor; generating a first data code based on the data code and the second virtual random number Two data codes; transmitting the second data code to the second element; transmitting the second data code from the second element to the conductive nib section; and transmitting the second data code from the conductive nib section.

In one embodiment, in order to synchronize with the receiving process of a touch processing device of a touch panel, the method further includes: receiving a synchronization signal from an electronic device; and after receiving the synchronization signal, performing the generation Step and the transfer step.

In one embodiment, in order to synchronize with the receiving process of the touch processing device of the touch panel close to the stylus, the synchronization signal is sent by an electrode of a touch panel of the electronic device.

In one embodiment, in order to avoid the conflict of virtual random numbers when multiple styluses are operated on a touch panel, the method further includes: receiving a setting command from the man-machine interface, which specifies the first virtual random number. A combination of the number and the second virtual random number.

In one embodiment, in order to provide virtual random number information to the user, the method further includes one of the following steps: making a visual indicator of the stylus indicate the first virtual random number and the second virtual random number A combination of digits; and making a sound indicator of the stylus indicate the combination of the first virtual random number and the second virtual random number.

In one embodiment, for the wired connection between the touch processing device and the wired stylus, the method further includes: receiving the first signal from the touch processing device by a first signal circuit; The circuit propagates the first signal to the first element; a second signal circuit receives the second signal from the touch processing device; and the second signal circuit propagates the second signal to the second element.

In one embodiment, in order to provide a switch state to a touch processing device, the method further includes: selectively receiving the first signal by a third element having a fixed impedance; and selectively receiving the first signal from the third element The first signal is transmitted to the conductive pen tip section.

In one embodiment, in order to provide a switch state to a touch processing device, the method further includes: selectively receiving the second signal by a fourth element having a fixed impedance; and selectively receiving the second signal from the fourth element The second signal is transmitted to the conductive pen tip section.

One of the objectives of the present invention is to provide a touch processing device for receiving an electrical signal carrying pressure information sent by a first stylus, including: a sensing circuit for the control of a touch panel Some electrodes receive the electrical signal; and a processor, coupled to the sensing circuit, for: de-spreading a first preamble of the received signal according to a first virtual random number; according to a second virtual The random code is used to despread a second preamble of the received signal; and the pressure information is calculated according to a first signal strength ratio of a first part and a second part of the received signal, wherein the first part includes The first preamble and the second part include the second preamble, wherein the first virtual random number is orthogonal to the second virtual random number.

In one embodiment, in order to trigger the stylus to synchronously transmit electrical signals, the touch processing device further includes a driving circuit coupled to the electrodes of the touch panel, wherein the processor is further used for: Before the receiving step is executed, make the driving circuit pass through the touch panel The electrodes transmit a lighthouse signal.

In one embodiment, in order to receive the state of the sensor on the stylus, the processor is further configured to: decode the first data code of the received signal according to the first virtual random number, wherein the first data The code represents the state of at least one sensor on the first stylus.

In one embodiment, in order to receive the state of the sensor on the stylus, the processor is further configured to: decode the second data code of the received signal according to the second virtual random number, wherein the second data The code represents the state of at least one sensor on the first stylus.

In one embodiment, in order to correctly receive the state of the sensor on the stylus, the processor is further configured to: decode the first data code of the received signal according to the first virtual random number; Two virtual random numbers decode the second data code of the received signal; and when the first data code is the same as the second data code, determine the data code, wherein the data code represents at least one on the first stylus The state of the sensor.

In one embodiment, in order to receive smoother and more even pressure information in a longer transmission, the first part further includes the first data code, and the second part further includes the second data code.

In one embodiment, in order to synchronize the transmission of the stylus more quickly, the processor is further configured to: couple at least two second electrodes of the touch panel as a synchronization channel, wherein the first preamble and The despreading step of the second preamble is performed on the received signal received by the synchronization channel to obtain a first synchronization message and a second synchronization message, wherein the second electrodes are parallel to each other.

In one embodiment, in order to use the synchronization message to correctly and quickly receive the state of the sensor on the stylus, the processor is further configured to: according to the first virtual random number and the first The synchronization message is used to decode the first data code of the received signal received by the at least one first electrode of the touch panel; according to the second virtual random number and the second synchronization message, at least the signal of the touch panel is The reception signal received by a first electrode decodes the second data code; and when the first data code is the same as the second data code, the data code is determined, wherein the data code represents the first stylus The state of at least one sensor, wherein a plurality of the first electrodes are parallel to each other, and the plurality of first electrodes and the plurality of second electrodes intersect.

In one embodiment, in order to receive electrical signals from multiple stylus pens at the same time, the processor is further configured to: de-spread a third preamble of the received signal according to a third virtual random number; The fourth virtual random code performs de-spreading on a fourth preamble of the received signal; and calculates a second touch according to the ratio of a second signal strength between a third part and a fourth part of the received signal Pressure information of a pen, wherein the third part includes the third preamble, the fourth part includes the fourth preamble, and the first virtual random number, the second virtual random number, and the third virtual The random number and the fourth virtual random number are orthogonal to each other.

In one embodiment, in order to provide a wired connection between a wired stylus and the touch processing device, the touch processing device further includes a stylus interface coupled to a first stylus of the first stylus Signal circuit and a second signal circuit, wherein the processor is coupled to the stylus interface, and is further used for: generating the first preamble according to the first virtual random number; generating the first preamble according to the second virtual random number Two preambles; and respectively transmitting the first preamble and the second preamble to the first signal circuit and the second signal circuit through the stylus interface.

In one embodiment, in order to receive a switch state of the stylus, the processor is further configured to calculate the first signal strength ratio of the first part and the second part of the received signal. A switch state of the stylus.

In one embodiment, in order to connect to multiple wire stylus at the same time, the stylus interface is further coupled to a third signal circuit and a fourth signal circuit of a second stylus. The processor connected to the stylus interface is further used for: generating a third preamble according to a third virtual random number; generating a fourth preamble according to a fourth virtual random number; and through the touch The pen interface respectively transmits the third preamble and the fourth preamble to the third signal circuit and the fourth signal circuit, wherein the first virtual random number, the second virtual random number, and the third virtual random number The number and the fourth virtual random number are orthogonal to each other.

One of the objectives of the present invention is to provide a method for receiving an electrical signal carrying pressure information sent by a first stylus, including: receiving the electrical signal through some electrodes of a touch panel; A virtual random code despreads a first preamble of the received signal; a second preamble of the received signal is despread according to a second virtual random code; and a second preamble of the received signal is despread according to a second virtual random code; The pressure information is calculated by a ratio of a first signal strength between a first part and a second part, wherein the first part includes the first preamble, the second part includes the second preamble, and the first virtual random The number is orthogonal to the second virtual random number.

In one embodiment, in order to trigger the stylus to synchronously transmit electrical signals, the method further includes: before the receiving step is performed, allowing the driving circuit to transmit a beacon signal through the electrodes of the touch panel.

In one embodiment, in order to receive the state of the sensor on the stylus, the method further includes: decoding a first data code of the received signal according to the first virtual random number, wherein the first data code represents The state of at least one sensor on the first stylus.

In one embodiment, in order to receive the state of the sensor on the stylus, the method further includes: decoding the second data code of the received signal according to the second virtual random number, which The second data code indicates the state of at least one sensor on the first stylus.

In one embodiment, in order to correctly receive the state of the sensor on the stylus, the method further includes: decoding the first data code of the received signal according to the first virtual random number; and according to the second virtual The random number decodes the second data code of the received signal; and when the first data code is the same as the second data code, the data code is determined, wherein the data code represents at least one sensor on the first stylus The status of the device.

In one embodiment, in order to receive smoother and more even pressure information in a longer transmission, the first part further includes the first data code, and the second part further includes the second data code.

In one embodiment, in order to synchronize the transmission of the stylus more quickly, the method includes: coupling at least two second electrodes of the touch panel as a synchronization channel, wherein the first preamble and the second The despreading step of the preamble is performed on the received signal received by the synchronization channel to obtain a first synchronization message and a second synchronization message respectively, wherein the second electrodes are parallel to each other.

In one embodiment, in order to use the synchronization message to correctly and quickly receive the state of the sensor on the stylus, the method further includes: according to the first virtual random number and the first synchronization message, the touch The received signal received by at least one first electrode of the panel decodes the first data code; according to the second virtual random number and the second synchronization message, the received signal from at least one first electrode of the touch panel The received signal decodes the second data code; and when the first data code is the same as the second data code, the data code is determined, wherein the data code represents the value of at least one sensor on the first stylus State, wherein a plurality of the first electrodes are parallel to each other, and the plurality of first electrodes and the plurality of second electrodes intersect.

In one embodiment, in order to receive electrical signals from multiple stylus pens at the same time, the method further includes: de-spreading a third preamble of the received signal according to a third virtual random number; and according to a fourth The virtual random number despreads a fourth preamble of the received signal; and calculates the ratio of a second signal strength of a third part and a fourth part of the received signal to a second stylus A pressure information, wherein the third part includes the third preamble, and the fourth part includes the temple two preamble, wherein the first virtual random number, the second virtual random number, and the third virtual random number , And the fourth virtual random number are orthogonal to each other.

In one embodiment, in order to provide a wired connection between a wired stylus and the touch processing device, the method further includes: generating the first preamble according to the first virtual random number; and according to the second virtual The random number generates the second preamble; and the first preamble and the second preamble are respectively transmitted to the first signal circuit and the second signal circuit.

In one embodiment, in order to receive a switch state of the stylus pen, the method further includes: calculating the first touch signal according to the ratio of the first signal strength of the first part and the second part of the received signal A switch state of the pen.

In one embodiment, in order to connect multiple stylus pens at the same time, the method further includes: generating a third preamble based on a third virtual random number for de-spreading; generating a first based on a fourth virtual random number Four preambles for de-spreading; and respectively transmitting the third preamble and the fourth preamble to a third signal circuit and a fourth signal circuit of a second stylus, wherein the first dummy The random number, the second virtual random number, the third virtual random number, and the fourth virtual random number are orthogonal to each other.

One of the objectives of the present invention is to provide a touch system, which includes a touch panel; a first stylus; and for receiving the carrying pressure data sent by the first stylus One of the electrical signals of the telecommunication touch processing device. The touch processing device includes: a sensing circuit for receiving the electrical signal from some electrodes of the touch panel; and a processor coupled to the sensing circuit for: according to a first virtual random number pair Perform despreading on a first preamble of the received signal; perform despreading on a second preamble of the received signal according to a second virtual random code; and perform despreading according to a first part and a first part of the received signal A first signal strength ratio of two parts is used to calculate the pressure information, wherein the first part includes the first preamble, the second part includes the second preamble, and the first virtual random number is orthogonal to the The second virtual random number.

In one embodiment, the stylus includes: a first element having an impedance that reflects a pressure, wherein the first element is used for receiving a first signal encoded with a first virtual random number; and having a fixed impedance A second element, wherein the second element is used to receive a second signal encoded with a second virtual random number; and a conductive pen tip section is used to simultaneously receive the first signal from the first element and The second element receives the second signal; and transmits an electrical signal including the first signal and the second signal, wherein the first virtual random number is orthogonal to the second virtual random number.

One of the objectives of the present invention is to provide a stylus pen that emits an electrical signal carrying pressure information, comprising: a first element having an impedance that responds to a pressure, wherein the first element is used to receive the signal in a first period of time A first signal encoded by a virtual random number; a second element having a fixed impedance, wherein the second element is used to receive a second signal encoded by the virtual random number in a second period of time; and a conductive pen tip section , Which is used to: receive the first signal from the first element in the first period; receive the second signal from the second element in the second period; and transmit the electrical signal containing the first signal in the first period Signal; and transmitting the electrical signal including the second signal in a second period, wherein the first virtual random number is orthogonal to the second virtual random number.

In one embodiment, in order to provide the first virtual random number and the second virtual random number on the stylus pen, the stylus further includes a controller for generating the first virtual random number according to the virtual random number. Signal; generate the second signal according to the virtual random number; transmit the first signal to the first element; and transmit the second signal to the second element.

In one embodiment, in order to transmit the state of the sensor on the stylus, the stylus further includes: at least one sensor connected to the controller. The controller is further used for: generating a data code according to the state of the at least one upper sensor; generating a first data code according to the data code and the virtual random number; and transmitting the first data code to the first element. The first element is further used for receiving the first data code from the controller in the first time period. The conductive pen tip section is further used for: receiving the first data code from the first element; and transmitting the first data code.

In one embodiment, in order to transmit the state of the sensor on the stylus, the stylus further includes: at least one sensor connected to the controller. The controller is further used for: generating a data code based on the state of the at least one upper sensor; generating a second data code based on the data code and the second virtual random code; and transmitting the second data code to the second component . The second element is further used for receiving the second data code from the controller in the second time period. The conductive pen tip section is further used for: receiving the second data code from the second element; and transmitting the second data code.

In one embodiment, in order to synchronize with the receiving program of a touch processing device of a touch panel, the controller is further used to: receive a synchronization signal from an electronic device; and after receiving the synchronization signal, execute The generation step and the transmission step.

In one embodiment, in order to synchronize with the receiving program of the touch processing device of the touch panel close to the stylus, the controller is coupled to the conductive pen tip section to receive the synchronization signal, and the synchronization signal is generated by Emitted from the electrodes of a touch panel of the electronic device.

In one embodiment, in order to avoid the conflict of virtual random numbers when operating multiple stylus pens on a touch panel, the stylus further includes a man-machine interface for the user to input virtual random numbers, wherein the controller It is further used to receive a setting command from the man-machine interface, which specifies the virtual random number.

In one embodiment, in order to provide virtual random number information to the user, the stylus includes one of the following devices connected to the controller to indicate the virtual random number: a visual effect indicator; and a sound effect indicator .

In one embodiment, for the wired connection between the touch processing device and the wired stylus, the stylus further includes: a first signal circuit coupled to the first element and a touch processing device for Propagating the first signal from the touch processing device to the first element; and a second signal circuit, coupled to the second element and the touch processing device, for propagating the second signal from the touch processing device To the second element.

In order to provide a switch state to a touch processing device, the stylus further includes: a third switch for receiving the first signal; and a third element with a fixed impedance, coupled to the third switch and the The conductive nib section, wherein the third switch can be selectively opened or closed. When the third switch is opened and closed, the first signal propagates from the conductive nib section via the third switch and the third element.

In order to provide a switch state to a touch processing device, the stylus further includes: a fourth switch for receiving the second signal; and a fourth element with a fixed impedance, coupled to the fourth switch and the The conductive nib section, wherein the third switch can be selectively opened or closed, and when the fourth switch is opened and closed, the second signal propagates from the conductive nib section via the fourth switch and the fourth element.

One of the objectives of the present invention is to provide a method for sending an electrical signal carrying pressure information from a stylus, comprising: receiving a virtual random number by a first element having an impedance that reacts to a pressure during a first period of time The encoded first signal; a second element with a fixed impedance receives a second signal encoded with the virtual random number in a second period of time; a conductive pen tip section receives from the first element in the first period of time The first signal; the conductive nib section receives the second signal from the second element in the second period; the conductive nib section transmits an electrical signal containing the first signal in the first period; and the conductive nib section transmits an electrical signal containing the first signal in the first period The pen tip section transmits an electric signal including the second signal in the second period.

In one embodiment, in order to provide the virtual random number on the stylus, the method further includes: generating the first signal according to the virtual random number; generating the second signal according to the virtual random number; and transmitting the first signal Signal to the first element; and transmitting the second signal to the second element.

In one embodiment, in order to transmit the state of the sensor on the stylus, the method further includes: generating a data code according to the state of the at least one upper sensor; generating first data based on the data code and the virtual random number Transmitting the first data code to the first element; transmitting the first data code from the first element to the conductive nib section; and transmitting the first data code from the conductive nib section.

In one embodiment, in order to transmit the state of the sensor on the stylus, the method further includes: generating a data code according to the state of the at least one upper sensor; generating second data based on the data code and the virtual random number Transmitting the second data code to the second element; transmitting the second data code from the second element to the conductive nib section; and transmitting the second data code from the conductive nib section.

In one embodiment, in order to synchronize with the receiving process of a touch processing device of a touch panel, the method further includes: receiving a synchronization signal from an electronic device; and after receiving the synchronization signal, performing the generation Step and the transfer step.

In one embodiment, in order to synchronize with the receiving process of the touch processing device of the touch panel close to the stylus, the synchronization signal is sent by an electrode of a touch panel of the electronic device.

In one embodiment, in order to avoid conflicts of virtual random numbers when operating multiple styluses on a touch panel, the method further includes: receiving a setting command from the man-machine interface, which specifies the virtual random numbers.

In one embodiment, in order to provide virtual random number information to the user, the method further includes one of the following steps: making a visual indicator of the stylus to indicate the virtual random number; and making the stylus A sound effect indicator indicates the virtual random number.

In one embodiment, for the wired connection between the touch processing device and the wired stylus, the method further includes: receiving the first signal from the touch processing device by a first signal circuit; The circuit propagates the first signal to the first element; a second signal circuit receives the second signal from the touch processing device; and the second signal circuit propagates the second signal to the second element.

In one embodiment, in order to provide a switch state to a touch processing device, the method further includes: selectively receiving the first signal by a third element having a fixed impedance; and selectively receiving the first signal from the third element The first signal is transmitted to the conductive pen tip section.

In one embodiment, in order to provide a switch state to a touch processing device, the method further includes: selectively receiving the second signal from a fourth element with a fixed impedance; And selectively transmit the second signal to the conductive nib section from the fourth element.

One of the objectives of the present invention is to provide a touch processing device for receiving an electrical signal carrying pressure information sent by a first stylus, including: a sensing circuit for the control of a touch panel Some electrodes receive the electrical signal; and a processor, coupled to the sensing circuit, for: de-spreading a first preamble of the received signal in a first period of time according to a virtual random number; according to The virtual random code despreads a second preamble of the received signal in a second time period; and calculates the first signal strength ratio of a first part and a second part of the received signal The pressure information, wherein the first part includes the first preamble, and the second part includes the second preamble.

In one embodiment, in order to trigger the stylus to synchronously transmit electrical signals, the touch processing device further includes a driving circuit coupled to the electrodes of the touch panel, wherein the processor is further used for: Before the receiving step is executed, the driving circuit is made to transmit a beacon signal through the electrodes of the touch panel.

In one embodiment, in order to receive the state of the sensor on the stylus, the processor is further configured to: decode the first data code of the received signal in the first time period according to the virtual random number, wherein The data code represents the state of at least one sensor on the first stylus.

In one embodiment, in order to receive the state of the sensor on the stylus, the processor is further configured to: decode the second data code of the received signal in the second time period according to the virtual random number, wherein The data code represents the state of at least one sensor on the first stylus.

In an embodiment, in order to correctly receive the state of the sensor on the stylus, the processor is further configured to: decode the first data code of the received signal in the first time period according to the virtual random number ; According to the virtual random number pair in the second period of the second time of the received signal The data code is decoded; and when the first data code is the same as the second data code, the data code is determined, wherein the data code represents the state of at least one sensor on the first stylus.

In one embodiment, in order to receive smoother and more even pressure information in a longer transmission, the first part further includes the first data code, and the second part further includes the second data code.

In one embodiment, in order to synchronize the transmission of the stylus more quickly, the processor is further configured to: couple at least two second electrodes of the touch panel as a synchronization channel, wherein the first preamble and The despreading step of the second preamble is performed on the received signal received by the synchronization channel to obtain a first synchronization message and a second synchronization message, wherein the second electrodes are parallel to each other.

In one embodiment, in order to use the synchronization message to correctly and quickly receive the state of the sensor on the stylus, the processor is further used for: according to the virtual random number and the first synchronization message, the touch The receiving signal received by the at least one first electrode of the panel is decoded for the first data code; the receiving signal received by the at least one first electrode of the touch panel according to the virtual random number and the second synchronization message Signal to decode the second data code; and when the first data code is the same as the second data code, determine the data code, wherein the data code represents the state of at least one sensor on the first stylus, A plurality of the first electrodes are parallel to each other, and the plurality of first electrodes and the plurality of second electrodes intersect.

In one embodiment, in order to receive electrical signals from multiple stylus pens at the same time, the processor is further configured to decode a third preamble of the received signal in a third period according to a second virtual random number. Spread spectrum; despread a fourth preamble of the received signal in a fourth period according to the second virtual random number; and according to a third part and a fourth part of the received signal To calculate a pressure information of a second stylus based on a second signal strength ratio of, wherein the third part includes the third preamble, the fourth part includes the fourth preamble, and the first virtual The random number and the second virtual random number are orthogonal to each other, wherein part of the third time period overlaps with part of the first time period or part of the second time period.

In one embodiment, in order to provide a wired connection between a wired stylus and the touch processing device, the touch processing device further includes a stylus interface coupled to a first stylus of the first stylus Signal circuit and a second signal circuit, wherein the processor is coupled to the stylus interface, and is further used for: generating the first preamble according to the virtual random number; generating the second preamble according to the virtual random number ; Transmit the first preamble to the first signal circuit in the first period through the stylus interface; and transmit the second preamble to the second signal in the second period through the stylus interface Circuit.

In one embodiment, in order to receive a switch state of the stylus, the processor is further configured to calculate the first signal strength ratio of the first part and the second part of the received signal. A switch state of the stylus.

In one embodiment, in order to receive electrical signals from multiple styluses at the same time, the stylus interface is further coupled to a third signal circuit and a fourth signal circuit of a second stylus. The processor is coupled to the stylus interface, and is further used for: generating a third preamble in a third period according to a second virtual random number; and generating a third preamble in a fourth period according to the second virtual random number The fourth preamble; the third preamble is sent to the third signal circuit in the third period through the stylus interface; the fourth preamble is sent to the third signal circuit in the fourth period through the stylus interface In the fourth signal circuit, the first virtual random number and the second virtual random number are orthogonal to each other, and the part of the third period overlaps with the part of the first period or the second period.

One of the objectives of the present invention is to provide a method for receiving an electrical signal carrying pressure information sent by a first stylus, including: receiving the electrical signal from some electrodes of a touch panel; according to a virtual The random code performs de-spreading on a first preamble of the received signal in a first period; according to the virtual random code, a second preamble of the received signal in a second period is de-spread And calculating the pressure information according to a first signal strength ratio of a first part and a second part of the received signal, wherein the first part includes the first preamble, and the second part includes the second preamble code.

In one embodiment, in order to trigger the stylus to synchronously transmit electrical signals, the method further includes: before the receiving step is performed, allowing the driving circuit to transmit a beacon signal through the electrodes of the touch panel.

In one embodiment, in order to receive the state of the sensor on the stylus pen, the method further includes: decoding the first data code of the received signal in the first time period according to the virtual random number, wherein the first data code of the received signal is decoded according to the virtual random number A data code indicates the state of at least one sensor on the first stylus.

In one embodiment, in order to receive the state of the sensor on the stylus pen, the method further includes: decoding the second data code of the received signal in the second period according to the virtual random number, wherein the first The two data codes represent the status of at least one sensor on the first stylus.

In one embodiment, in order to correctly receive the state of the sensor on the stylus, the method further includes: decoding the first data code of the received signal in the first period according to the virtual random number; according to The virtual random number decodes the second data code of the received signal in the second time period; and when the first data code is the same as the second data code, the data code is determined, wherein the data code represents the first data code The state of at least one sensor on the stylus.

In one embodiment, in order to receive a smoother and more even The first part further includes the first data code, and the second part further includes the second data code.

In one embodiment, in order to synchronize the transmission of the stylus more quickly, the method further includes: coupling at least two second electrodes of the touch panel as a synchronization channel, wherein the first preamble and the second electrode The despreading step of the two preambles is performed on the received signal received by the synchronization channel to obtain a first synchronization message and a second synchronization message respectively, wherein the second electrodes are parallel to each other.

In one embodiment, in order to use the synchronization message to correctly and quickly receive the state of the sensor on the stylus, the method further includes: according to the virtual random number and the first synchronization message, The reception signal received by at least one first electrode is decoded for the first data code; the reception signal received by at least one first electrode of the touch panel is decoded according to the virtual random code and the second synchronization message Decoding of the second data code; and when the first data code is the same as the second data code, the data code is determined, wherein the data code represents the state of at least one sensor on the first stylus, and more The first electrodes are parallel to each other, and the plurality of first electrodes intersect with the plurality of second electrodes.

In one embodiment, in order to receive electrical signals from multiple stylus pens at the same time, the method further includes: de-spreading a third preamble of the received signal in a third period according to a second virtual random number ; According to the second virtual random number to despread a fourth preamble of the received signal in a fourth period; and according to a second signal strength of a third part and a fourth part of the received signal Ratio to calculate a pressure information of a second stylus, where the third part includes the third preamble, the fourth part includes the fourth preamble, and the first virtual random number and the second The virtual random numbers are orthogonal to each other, and the part of the third time period is the same as that of the first time period. Part or part of the second time period overlaps.

In one embodiment, in order to provide a wired connection between a wired stylus and the touch processing device, the method further includes: generating the first preamble according to the virtual random number; generating the first preamble according to the virtual random number A second preamble; transmitting the first preamble to the first signal circuit of the first stylus in the first time period; and transmitting the second preamble to the first touch pen in the second time period The second signal circuit of the stylus.

In one embodiment, in order to receive a switch state of the stylus pen, the method further includes: calculating the first touch signal according to the first signal strength ratio of the first part and the second part of the received signal A switch state of the pen.

In one embodiment, in order to receive electrical signals from multiple stylus pens at the same time, the method further includes: generating a third preamble according to a second virtual random number in a third period; according to the second virtual random number Generate a fourth preamble in a fourth period; transmit the third preamble to a third signal circuit of a second stylus in the third period; transmit the fourth preamble in the fourth period Code to a fourth signal circuit of the second stylus, wherein the first virtual random number and the second virtual random number are orthogonal to each other, and the part of the third period is the same as that of the first period or the second period Partially overlapped.

One of the objectives of the present invention is to provide a touch system including: a touch panel; a first stylus; and a touch processing device. The touch processing device is used to receive the electrical signal carrying pressure information sent by the first stylus, and includes: a sensing circuit for receiving the electrical signal from some electrodes of the touch panel; and a processing A device, coupled to the sensing circuit, for: despreading a first preamble of the received signal in a first period according to a virtual random code; and according to the virtual random code pair in a second period A second of the received signal The preamble is de-spread; and the pressure information is calculated according to a first signal strength ratio of a first part and a second part of the received signal, wherein the first part includes the first preamble, and the second part Part contains the second preamble.

In one embodiment, the first stylus includes: a first element having an impedance that reflects a pressure, wherein the first element is used for receiving the first signal encoded by the virtual random number in the first time period A second element with a fixed impedance, wherein the second element is used to receive the second signal encoded by the virtual random number in the second period; and a conductive pen tip segment for: in the first period Receive the first signal from the first element; receive the second signal from the second element in the second period; transmit the electrical signal including the first signal in the first period; and transmit the electrical signal including the first signal in the second period The electrical signal of the second signal, wherein the first virtual random number is orthogonal to the second virtual random number.

The above description is only an outline of the technology of the present invention. The preferred embodiments of the present invention and the accompanying drawings provided below can enable those of ordinary skill in the art to better understand the objectives, features, and advantages of the present invention, and enable them to complete the present invention based on these descriptions.

100: Touch system

110: sender

111: The first stylus

112: Second stylus

120: Touch panel

121: first electrode

122: second electrode

130: Touch processing device

140: host

211: The first signal source

212: second signal source

221: first element

222: second component

230: nib section

321: first capacitor

322: second capacitor

441: Eraser capacitor

442: Pen Capacitor

523: ring capacitor

550: Ring electrode

551: Ring electrode wire

610~660: steps

714: Single source

760: control unit

770: Transmitter wireless communication unit

771: Transmitter wired communication unit

780: Host wireless communication unit

781: Host Wired Communication Unit

810~860: steps

1110: the first metal plate

1110A: The first metal plate A

1110B: The first metal plate B

1120: second metal plate

1120A: The second metal plate A

1120B: The second metal plate B

1130: The third metal plate

1130A: The third metal plate A

1130B: The third metal plate B

1140: Lifting element or ramp device

1150: support element

1970: movable element

1971: Front movable element

1972: Rear movable element

1973: insulating film

1974: Compressible conductor

1975: Conductor substrate

1976: Base wire

1977: movable element wire

1978: Elastic element

1979: compressible insulating material

1980: shell

1990: printed circuit boards

2110: pressure sensor

2120: control unit

2210: pressure sensor

2220: control unit

2610~2650: steps

2900: Detection beacon signal system

2910: receiving electrode

2920: Detection Module

2921: Analog Front End

2922: Comparator

2930: Demodulator

3200: method of solving spread spectrum signal

3210~3250: steps

3310: Controller

3311: signal

3312: signal

3320: Clock signal module

3330: battery

3410: Connect to the Internet

3420: drive circuit

3430: Sensing circuit

3440: Embedded processor

3450: host interface

3510~3560: steps

3610~3680: steps

3710~3765: steps

3815~3880: steps

3900: Touch system

3910: Wired stylus

3911: The first signal circuit

3912: second signal circuit

3913: third circuit

3920: third switch

3930: third component

3940: fourth switch

3950: the fourth component

4010: stylus interface

4040: Embedded processor

4110~4140: steps

4210~4290: steps

4310~4360: steps

Sw1: switch

Sw2: switch

Sw3: switch

Sw4: switch

Sw5: switch

Sw6: switch

SWB: switch

SWE: Switch

The present invention can be understood more completely by reading the detailed description of the following preferred embodiments and referring to the accompanying drawings.

FIG. 1 is a schematic diagram of a touch system 100 according to an embodiment of the invention.

FIG. 2 is a schematic diagram of the interior of a transmitter 110 according to an embodiment of the present invention.

FIG. 3 is a schematic diagram of the interior of a transmitter 110 according to an embodiment of the present invention.

FIG. 4A is a schematic diagram of the interior of a transmitter 110 according to an embodiment of the invention.

FIG. 4B is a schematic diagram of the interior of a transmitter 110 according to an embodiment of the invention.

FIG. 5 is a schematic diagram of the interior of a transmitter 110 according to an embodiment of the present invention.

FIG. 6 is a schematic flowchart of a method for judging a transmitter or an active stylus tip sensing value by a touch device according to an embodiment of the present invention.

FIG. 7A is a schematic diagram of the interior of a transmitter 110 according to an embodiment of the present invention.

FIG. 7B is a schematic diagram of the interior of a transmitter 110 according to an embodiment of the present invention.

FIG. 7C is a schematic diagram of the interior of a transmitter 110 according to an embodiment of the present invention.

FIG. 7D is a schematic diagram of the interior of a transmitter 110 according to an embodiment of the present invention.

FIG. 8 is a schematic flowchart of a method for determining a sensor tip sensing value of a transmitter by a touch device according to an embodiment of the present invention.

FIG. 9A is a timing diagram of signal modulation of the transmitter 110 according to an embodiment of the invention.

FIG. 9B is a timing diagram of signal modulation of the transmitter 110 according to an embodiment of the present invention.

FIG. 9C is a timing diagram of signal modulation of the transmitter 110 according to an embodiment of the present invention.

FIG. 9D is a timing diagram of signal modulation of the transmitter 110 according to an embodiment of the invention.

FIG. 9E is a timing diagram of signal modulation of the transmitter 110 according to an embodiment of the present invention.

FIG. 9F is a timing diagram of signal modulation of the transmitter 110 according to an embodiment of the invention.

FIG. 10 is a schematic diagram of noise propagation according to an embodiment of the invention.

FIG. 11 is a schematic diagram of a structure of a first capacitor 221 according to another embodiment of the present invention.

Fig. 12 is a reduction diagram of the embodiment shown in Fig. 11.

FIG. 13 is a modification of the embodiment shown in FIG. 12.

Fig. 14 is a modification of the embodiment shown in Fig. 13.

Fig. 15 is a modification of the embodiment shown in Fig. 14.

Fig. 16A is a schematic diagram according to an embodiment of the present invention.

Fig. 16B is a modification of the embodiment shown in Fig. 16A.

17A and 17B are schematic diagrams of the structure of the first capacitor and the second capacitor according to the present invention.

Fig. 18 is a modification of the embodiment shown in Fig. 11.

FIG. 19A is an exploded schematic diagram of the center section of the force sensing capacitor and its structure of the transmitter 110.

FIG. 19B is a schematic cross-sectional view of the structure shown in FIG. 19A after being assembled.

FIG. 19C is another schematic cross-sectional view after the structure shown in FIG. 19A is combined.

19D is an exploded schematic diagram of the center section of the force sensing capacitor and its structure of the transmitter 110 according to an embodiment of the present invention.

FIG. 19E is an exploded schematic diagram of the center section of the force sensing capacitor and its structure of the transmitter 110 according to an embodiment of the present invention.

20 is a schematic cross-sectional view of the contact surface between the compressible conductor 1974 and the insulating film 1973 in FIG. 19A.

FIG. 21 is a schematic diagram of a pressure sensor according to an embodiment of the invention.

FIG. 22 is a schematic diagram of a pressure sensor according to an embodiment of the invention.

23A and 23B are schematic diagrams of the structure of a simple switch according to an embodiment of the present invention.

24A and 24B are schematic diagrams of the structure of a simple switch according to an embodiment of the present invention.

FIG. 25 is a schematic diagram of inferring the position of the pen tip provided by the present invention.

Fig. 26 is a schematic diagram of calculating a tilt angle according to an embodiment of the present invention.

FIG. 27 shows an embodiment of the interface reflecting the stroke of the aforementioned tilt angle and/or pressure.

FIG. 28 is another embodiment of a brush stroke reflecting the aforementioned inclination and/or pressure on the display interface.

Figure 29 is a block diagram of a beacon signal detection system according to an embodiment of the invention.

Figure 30 is a schematic diagram of the waveform of spread spectrum technology.

Fig. 31 is a modification of the embodiment shown in Fig. 1.

FIG. 32 is a schematic flowchart of a method for resolving a spread spectrum signal according to an embodiment of the present invention.

FIG. 33 is a block diagram of an active stylus according to an embodiment of the invention.

FIG. 34 is a block diagram of a touch processing device 130 according to an embodiment of the invention.

FIG. 35 is a schematic diagram of a process implemented by the controller shown in FIG. 33 according to an embodiment of the present invention.

FIG. 36A is a schematic diagram of a process implemented by an embedded processor according to an embodiment of the present invention.

FIG. 36B is a schematic diagram of a process implemented by an embedded processor according to an embodiment of the present invention.

FIG. 37A is a schematic diagram of a process executed by the controller shown in FIG. 33 according to an embodiment of the present invention.

FIG. 37B is a schematic diagram of a process executed by the controller shown in FIG. 33 according to an embodiment of the present invention.

FIG. 38A is a schematic diagram of a process implemented by an embedded processor according to an embodiment of the present invention.

FIG. 38B is a schematic diagram of a process implemented by the embedded processor according to an embodiment of the present invention.

FIG. 39A is a block diagram of a touch system according to an embodiment of the invention.

FIG. 39B is a schematic block diagram of a variation of a touch system according to an embodiment of the present invention.

FIG. 39C is a schematic block diagram of a variation of a touch system according to an embodiment of the present invention.

FIG. 40 is a block diagram of a touch processing device according to an embodiment of the invention.

FIG. 41A is a schematic flowchart of an operation method suitable for a wired stylus according to an embodiment of the present invention.

FIG. 41B is a schematic flowchart of an operation method suitable for a wired stylus according to an embodiment of the present invention.

FIG. 41C is a flow of an operation method suitable for a wired stylus according to an embodiment of the present invention 程Schematic diagram.

FIG. 42 is a schematic diagram of a process suitable for a touch processing device according to an embodiment of the present invention.

FIG. 43 is a schematic diagram of a process suitable for a touch processing device according to an embodiment of the present invention.

Some embodiments of the present invention will be described in detail as follows. However, except for the disclosed implementation exceptions, the scope of the present invention is not limited by these embodiments, but the scope of subsequent patent applications shall prevail. In order to provide a clearer description and enable ordinary persons skilled in the art to understand the content of the present invention, the various parts in the figure are not drawn according to their relative dimensions, and the proportions of certain dimensions or other related dimensions may be highlighted. It appears exaggerated, and the irrelevant details are not completely drawn in order to keep the diagram concise.

Please refer to FIG. 1, which is a schematic diagram of a touch system 100 according to an embodiment of the present invention. The touch control system 100 includes at least one transmitter 110, a touch panel 120, a touch processing device 130 and a host 140. The transmitter 110 uses an active stylus capable of actively sending out electrical signals as an example in this embodiment, but the actual implementation is not limited to this. The touch control system 100 may include a plurality of transmitters 110. The aforementioned touch panel 120 is formed on a substrate, and the touch panel 120 may be a touch screen. The present invention does not limit the form of the touch panel 120.

In one embodiment, the touch area of the touch panel 120 includes a plurality of first electrodes 121 and a plurality of second electrodes 122, and a plurality of capacitive coupling sensing points are formed where the two overlap. The first electrode 121 and the second electrode 122 are respectively connected to the touch processing device 130. In the mutual capacitance detection mode, the first electrode 121 can be referred to as a first conductive strip or a driving electrode, and the second electrode 122 can be referred to as a second conductive strip or a sensing electrode. The touch processing device 130 can provide a driving voltage (voltage of a driving signal) to the first electrodes 121 and measure the signals of the second electrodes 122 According to the change, it is known that an external conductive object approaches or touches (referred to as close proximity) to the touch panel 120. Those of ordinary skill in the art can understand that the aforementioned touch processing device 130 can use mutual capacitance or self-capacitance to detect proximity events and proximity objects, which will not be described in detail here. In addition to the mutual capacitance or self-capacitance detection method, the touch processing device 130 can also detect the electrical signal sent by the transmitter 110, and then detect the relative relationship between the transmitter 110 and the touch panel 120. position. In one embodiment, the signal changes of the first electrode 121 and the second electrode 122 are respectively measured to detect the signal of the transmitter 110, thereby detecting the relative position of the transmitter 110 and the touch panel 120. Since the signal of the transmitter 110 and the driving signal of mutual capacitance or self-capacitance have different frequencies and are not mutually resonant waves, the touch processing device 130 can distinguish between the signal transmitted by the transmitter 110 and the mutual capacitance or mutual capacitance respectively. Self-capacitance signal. In another embodiment, the touch panel 120 may be a surface capacitive touch panel with one electrode on each of the four corners or four sides. The touch processing device 130 measures the signal changes of the four electrodes separately or at the same time. The relative position of the originator 110 and the touch panel 120 is detected.

Fig. 1 also includes a host 140, which can be a central processing unit, or a main processor in an embedded system, or a computer in other forms. In an embodiment, the touch system 100 may be a tablet computer, and the host 140 may be a central processing unit that executes a tablet computer operating program. For example, the tablet computer executes an Android operating system, and the host 140 is an ARM processor that executes the Android operating system. The present invention does not limit the form of information transmitted between the host 140 and the touch processing device 130, as long as the transmitted information is related to the proximity event occurring on the touch panel 120.

Since it needs to actively send out electrical signals, the transmitter 110 or the active stylus needs power to supply the energy required to send out the electrical signals. In an embodiment, the power source of the transmitter 110 may be a battery, especially a rechargeable battery. In another embodiment, the power source of the pen can be So it is a capacitor, especially a super capacitor (Ultra-capacitor or Super-capacitor), such as electrical double layer capacitor (EDLC, Electrical Double Layered Capacitor), virtual capacitor (Pseudo capacitor), and hybrid capacitor (hybrid capacitor) Of super capacitors. The charging time of the super capacitor is about the order of seconds, and in the embodiment of the present invention, the discharge time of the super capacitor is about the order of hours. In other words, only need a short time to charge, you can use the active pen for a long time.

In one embodiment, the touch panel 120 periodically emits a beacon signal. When the transmitter 110 or the tip of the stylus is connected to the touch panel 120, the transmitter 110 can sense the beacon signal by the tip of the pen, and then begin to send out electrical signals for a period of time for the touch panel 120 to detect it. use. In this way, the transmitter 110 may stop sending the electrical signal when the beacon signal is not detected, thereby prolonging the power usage time of the transmitter 110.

The above-mentioned lighthouse signal can be transmitted by using multiple first electrodes 121 and/or second electrodes 122. In one embodiment, when the first electrode 121 is used to send out the driving signal of mutual capacitance touch detection, the frequency of the driving signal and the lighthouse signal are different, and they are not the resonance wave of the other party. Therefore, the beacon signal can be simultaneously issued during the period when the driving signal is issued, that is, mutual capacitance touch detection and electrical signal detection can be performed simultaneously. In another embodiment, the driving signal and the beacon signal may be sent out in turn, that is, mutual capacitance touch detection and electrical signal detection are performed in a time-sharing manner. The frequency of the driving signal and the beacon signal may be the same or different.

In one embodiment, in order to enable the transmitter 110 to detect the beacon signal at a far distance from the touch panel 120, the touch processing device 130 can make the touch processing device 130 contact all the first electrodes 121 and the touch panel 120 The second electrode 122 emits driving signals at the same time, so that the sum of the signal strengths emitted by the touch panel 120 is maximized.

Please refer to FIG. 2, which is a schematic diagram of the interior of a transmitter 110 according to an embodiment of the present invention. The transmitter 110 includes a first signal source 211, a second signal source 212, a first element 221 having a first impedance Z1, a second element 222 having a second impedance Z2, and a tip 230. The first signal sent by the first signal source 211 is transmitted to the touch panel 120 after passing through the first element 221 and the pen tip section 230. Similarly, the second signal from the second signal source 212 is transmitted to the touch panel 120 after passing through the second element 222 and the pen tip section 230.

In one embodiment, the first signal is a signal including a first frequency f1, and the second signal is a signal including a second frequency f2. The first frequency f1 and the second frequency f2 may be square wave signals, sine wave signals, or signals after pulse width modulation (Pulse Width Modulation). In one embodiment, the first frequency f1 is different from the frequency of the lighthouse signal and the frequency of the driving signal, and is also different from the resonance frequency of the frequency of the lighthouse signal and the frequency of the driving signal. The second frequency f2 is different from the first frequency f1, the frequency of the lighthouse signal and the frequency of the driving signal, and is also different from the first frequency f1, the resonant frequency of the lighthouse frequency signal and the signal of the driving frequency.

The signals of the two frequencies are respectively mixed after passing through the first element 221 with the first impedance Z1 and the second element 222 with the second impedance Z2, and are fed into the pen tip section 230. The aforementioned first element 221 and second element 222 may be impedances caused by resistance elements, inductance elements, capacitive elements (such as solid capacitors) or any combination thereof. In the embodiment shown in FIG. 2, the second impedance Z2 may be fixed, and the first impedance Z1 is variable and corresponds to the amount of change of a certain sensor.

In another embodiment, both the first impedance Z1 and the second impedance Z2 are variable, and the ratio of the two impedances corresponds to the amount of change of a certain sensor. In one embodiment, the sensor can Therefore, it is a stretchable elastic pen tip, and the above-mentioned first impedance Z1 can be changed corresponding to the stroke or force of the elastic pen tip. In some examples, the aforementioned first impedance Z1 linearly corresponds to a change in a physical quantity of the sensor. However, in another example, the aforementioned first impedance Z1 nonlinearly corresponds to the change of the physical quantity of the sensor.

The above-mentioned first element 221 and second element 222 may be different electronic elements. For example, the first element 221 is a resistor, and the second element 222 is a capacitor, and vice versa. For another example, the first element 221 is a resistor, and the second element 222 is an inductor, and vice versa. For another example, the first element 221 is an inductor, and the second element 222 is a capacitor, and vice versa. At least one of the first impedance Z1 and the second impedance Z2 is variable, such as a variable resistance resistor, a capacitor with a variable capacitance, or an inductor with a variable inductance. When one of the above-mentioned first impedance Z1 and second impedance Z2 is invariable, it can be set with existing electronic components, such as a general resistance element with a fixed resistance, a capacitive element with a fixed capacitance, or one with a fixed inductance. Inductive components.

In one embodiment, the first element 221 may be a force sensing resistor (FSR), the resistance value of which may change predictably according to the applied force, and the second element 222 may be a fixed resistance. In another embodiment, the first element 221 may be a variable resistor. Therefore, under the same other conditions, the ratio of the intensity M1 of the signal part of the first frequency f1 to the intensity M2 of the signal part of the second frequency f2 among the electrical signals emitted by the pen tip 230 will be the first impedance Z1 It is inversely proportional to the ratio of the second impedance Z2. In other words, M1/M2=k(Z2/Z1).

Therefore, when the transmitter 110 is hovering above the touch panel 120, the pen tip section 230 has not moved or received any force. Therefore, among the electrical signals detected by the touch panel 120, the signal portion of the first frequency f1 is The ratio of the intensity M1 to the intensity M2 of the signal part of the second frequency f2 is a fixed value. Fixed value or preset value. Or in another embodiment, the ratio of (M1-M2)/(M1+M2) or (M2-M1)/(M1+M2) is also a fixed value or a preset value. In addition, the ratio of M1/(M1+M2) or M2/(M1+M2) can also be used to express the pressure value. In addition to the above-mentioned four ratios, those skilled in the art can also think of replacing them with any ratio involving the strengths M1 and M2. In other words, when the ratio is detected as the fixed value, it can be determined that the sensor has not sensed any change in the physical quantity. In one embodiment, the transmitter 110 does not touch the touch panel 120.

After the transmitter 110 touches the touch panel 120, the pen tip section 230 has a displacement stroke due to the force. The first impedance Z1 of the first element 221 changes in accordance with the stroke or force of the pen tip section 230, so that the strength of the signal portion M1 of the first frequency f1 and the strength of the signal portion of the second frequency f2 in the electrical signal The ratio of M2 changes, which is different from the fixed value or preset value mentioned above. The touch panel 120 can use the above-mentioned relationship to generate a corresponding sensing value according to the ratio. The aforementioned fixed value or preset value is not limited to a single value, and may also be a range within an error tolerance.

It should be noted that the ratio and the sensing value may not have a linear relationship. Furthermore, the sensing value may not necessarily have a linear relationship with the displacement stroke of the sensor or the force of the sensor. The sensed value is only a value sensed by the touch panel 120, and the present invention does not limit its relationship. For example, the touch panel 120 can use a look-up table or a plurality of calculation formulas to map the ratio to the sensing value.

Please refer to FIG. 3, which is a schematic diagram of the interior of a transmitter 110 according to an embodiment of the present invention. Similar to the embodiment in FIG. 2, the transmitter 110 includes a first signal source 211, a second signal source 212, a first capacitor 321 having a first capacitance value C1, and a second capacitance value A second capacitor 322 of C2 and a pen tip section 230.

The two signal sources 211 and 212 may be a pulse width modulation first signal source (PWM1) and a pulse width modulation second signal source (PWM2), respectively. The frequency of the two signal sources can be the same or different. The transmitter 110 includes a second capacitor 322 with a fixed capacitance value C2 and a first capacitor 321 with a variable capacitance value C1, which are respectively connected to the aforementioned signal sources PWM2 212 and PWM1 211. Since the capacitance value C1 changes with the pressure value of the pen tip section 230, the embodiment shown in FIG. 3 may include a capacitive force sensor or a force sensing capacitor (FSC, Force Sensing Capacitor). In one embodiment, the capacitive force sensor can be implemented using a printed circuit board (PCB) or other materials. The structure of the force sensing capacitor will be described later in this application.

The intensity ratio of the two signal sources is inversely proportional to the impedance ratio of the two capacitors 321 and 322. When the tip section 230 of the stylus does not touch an object, or the force sensor does not detect force, the impedance value of the first capacitor 321 does not change. The impedance ratio of the two capacitors 321 and 322 is also fixed. When the transmitter 110 is hovering above the touch panel/screen 120 and the electrical signal emitted by it can be detected, the intensity ratio of the above two signal sources is fixed.

However, when the pen tip section 230 of the transmitter 110 touches an object, or the force sensor detects a force, the impedance of the first capacitor 321 changes accordingly. The impedance ratio of the two capacitors 321 and 322 also changes accordingly. When the transmitter 110 touches the surface of the touch panel/screen 120 and the electrical signal emitted by it can be detected, the ratio of the strength of the two signal sources above changes with the force received by the force sensor .

Please refer to FIG. 4A, which is a schematic diagram of the interior of a transmitter 110 according to an embodiment of the present invention. Similar to the embodiment of FIG. 3, the transmitter 110 includes a first signal source 211, a first signal source 211, and a second signal source 211. Two signal sources 212, a first capacitor 321 having a first capacitance value C1, a second capacitor 322 having a second capacitance value C2, and a pen tip section 230. The transmitter 110 may include multiple sensors for detecting multiple states. In one embodiment, the pen tip section 230 includes a pressure sensor for detecting the force state of the stylus pen tip and reflecting it on the electrical signal emitted by it. In another embodiment, the sender 110 may include multiple buttons, such as an Eraser button and a Barrel button. In other embodiments, the transmitter 110 may further include a switch for sensing whether the pen tip is in contact with the touch screen or other objects. Those of ordinary skill in the art can understand that the transmitter 110 may include more buttons or other types of sensors, and is not limited to the above examples.

In the embodiment of FIG. 4A, the first capacitor 321 is connected in parallel with the other two eraser capacitors 441 and the barrel capacitor 442, which are respectively connected to the above-mentioned Eraser button and Barrel button, that is, the switches SWE and SWB. . When the aforementioned button or switch is pressed, the capacitors 441 and 442 will be connected in parallel with the first capacitor 321, so that the capacitance value on the PWM1 signal path changes, which causes the impedance ratio of the PWM1 and PWM2 signal paths to change, so that the two signals The intensity ratio changes accordingly.

Since the capacitance value C1 and impedance value of the first capacitor 321 will change, when the eraser capacitor 441 and the barrel capacitor 442 are connected in parallel, the ratio of the impedance value of the parallel connection to the impedance value of the second capacitor 322 will fall within a range Inside. In the embodiment shown in FIG. 4A, it is assumed that within the variable range of the first capacitor 321, the signal intensity ratio of PWM1/PWM2 falls within a first range. After the first capacitor 321 and the barrel capacitor 442 are connected in parallel, that is, after the barrel button is pressed, the signal ratio of PWM1/PWM2 falls in a second range. After the first capacitor 321 is connected in parallel with the eraser capacitor 441, that is, after the eraser button is pressed, the signal ratio of PWM1/PWM2 falls in a third range. After the first capacitor 321 is connected in parallel with the barrel capacitor 442 and the eraser capacitor 441, that is, the pen After the lever button and the eraser button are pressed at the same time, the signal ratio of PWM1/PWM2 falls in the fourth range. The capacitance value and impedance value of the penholder capacitor 442 and the eraser capacitor 441 can be adjusted so that the aforementioned first range, second range, third range, and/or fourth range do not overlap. Since the above-mentioned possible ranges do not overlap, it is possible to know which button is pressed from which range of the signal strength ratio falls. Then, from the ratio of signal strength, what is the force of the thrust sensor.

Please refer to FIG. 4B, which is a schematic diagram of the interior of a transmitter 110 according to an embodiment of the present invention. Compared with the embodiment of FIG. 4A, in the embodiment of FIG. 4B, the second capacitor 322 is connected in parallel with the other two eraser capacitors 441 and the barrel capacitor 442, which are respectively connected to the above-mentioned Eraser button and the barrel (Barrel). ) Button, that is, switch SWE and SWB. When the above button or switch is pressed, the penholder capacitor 442 and the eraser capacitor 441 will be connected in parallel with the second capacitor 322, causing the impedance ratio of the PWM1 and PWM2 signal paths to change, so that the intensity ratio of the two signals will change accordingly. .

Since the capacitance value C1 and impedance value of the first capacitor 321 will change, when the second capacitor 322 is connected in parallel with the eraser capacitor 441 and the barrel capacitor 442, the ratio of the impedance value of the first capacitor 321 and its parallel connection will fall within a range. Inside. In the embodiment shown in FIG. 4B, it is assumed that within the variable range of the first capacitor 321, the signal intensity ratio of PWM1/PWM2 falls within a first range. After the second capacitor 322 and the barrel capacitor 442 are connected in parallel, that is, after the barrel button is pressed, the signal ratio of PWM1/PWM2 falls in a fifth range. After the second capacitor 322 and the eraser capacitor 441 are connected in parallel, that is, after the eraser button is pressed, the signal ratio of PWM1/PWM2 falls in the sixth range. After the second capacitor 322 is connected in parallel with the pen barrel capacitor 442 and the eraser capacitor 441, that is, after the pen barrel button and the eraser button are pressed simultaneously, the signal ratio of PWM1/PWM2 falls on the seventh range.

Using the spirit of the embodiment of FIG. 4A, the capacitance value and impedance value of the pen barrel capacitor 442 and the eraser capacitor 441 can be adjusted, so that the above-mentioned first range, fifth range, sixth range, and seventh range are all different from each other. overlapping. Since these ranges do not overlap, it is possible to determine which button is pressed according to which range the signal strength falls within. Based on this, the strength of the force sensor can be calculated according to the signal strength ratio.

Please refer to FIG. 5, which is a schematic diagram of the interior of a transmitter 110 according to an embodiment of the present invention. The embodiment in FIG. 5 may be a variation of the embodiments in FIGS. 2, 3, 4A and 4B, and the changes made in the embodiment in FIG. 5 can be applied to the embodiments in the above figures.

Compared with the embodiment of FIG. 2, the embodiment of FIG. 5 has more ring electrodes 550 and ring wires 551. The ring electrode wire 551 of FIG. 5 can be connected to a third signal source 513 through a ring capacitor 523 having a fixed capacitor Cr. The ring electrode 550 surrounds the pen tip section 230 and is electrically coupled to the ring electrode wire 551 and connected to the printed circuit board at the rear end. Although it is referred to as the ring electrode 550 in this application, in some embodiments, the ring electrode 550 may include a plurality of electrodes. This application does not limit the number of ring electrodes 550, and for convenience, they are referred to as ring electrodes 550. The ring electrode 550 and the pen tip are electrically insulated, and the two are not electrically coupled.

In Figure 5, six switches Sw1 to Sw6 are included. Assuming that the pen tip section 230 is to radiate the first signal source 211, Sw1 can be short-circuited and Sw2 can be opened. Otherwise, you can open Sw1. Or short-circuit Sw1 and Sw2 at the same time. Similarly, assuming that the pen tip section 230 is to radiate the second signal source 212, Sw3 can be short-circuited and Sw4 can be opened. Otherwise, you can open Sw3. Or short-circuit Sw3 and Sw4 at the same time. Assuming that the ring electrode 550 is to radiate the third signal source 513, you can Short-circuit Sw5 and open Sw6. On the contrary, you can open Sw5. Or short-circuit Sw5 and Sw6 at the same time.

The above-mentioned first signal source 211 and second signal source 212 may include signals of different frequencies, or may include signals of multiple different frequency groups. Similarly, the third signal source 513 of FIG. 5 may also include signals with different frequencies from the first signal source 211 and the second signal source 212, or may include signals with a different frequency group from the first signal source 211 and the second signal source 212. signal. Similarly, the aforementioned first signal source 211 and second signal source 212 may include pulse width modulation (PWM) signals. The frequencies of the two signal sources 211 and 212 may be the same or different. Similarly, the third signal source 513 in FIG. 5 may also include a pulse width modulation (PWM) signal. The frequencies of these three signal sources can be the same or different.

Please refer to FIG. 6, which is a schematic flowchart of a method for judging a sender or an active stylus tip sensing value by a touch device according to an embodiment of the present invention. This method can be executed by the touch processing device 130 in the embodiment of FIG. 1. The touch processing device 130 is connected to the plurality of first electrodes 121 and the plurality of second electrodes 122 on the touch panel 120 and is used to detect the electrical signals emitted by the pen tip section 230 of the transmitter 110. The touch processing device 130 can determine the relative position of the transmitter 110 and the touch panel 120 according to the signal strength received by the plurality of first electrodes 121 and the plurality of second electrodes 122. In addition, the method shown in FIG. 6 can be used to determine the force sensing value of the transmitter 110. In one embodiment, the force sensing value is the pressure value received by the tip section 230.

The embodiment of FIG. 6 may correspond to the embodiments of FIG. 2 to FIG. 5. The first two steps 610 and 620 are to calculate the signal intensities M1 and M2 corresponding to the first signal source 211 and the second signal source 212, respectively. These two steps 610 and 620 can be performed in no particular order or simultaneously. When the electrical signal from the first signal source 211 has the first frequency f1 and the electrical signal from the second signal source 212 When there is a second frequency f2, the aforementioned signal strength M1 corresponds to the signal strength of the first frequency f1, and the aforementioned signal strength M2 corresponds to the signal strength of the second frequency f2. When the electrical signal from the first signal source 211 has a first frequency group F1 and the electrical signal from the second signal source 212 has a second frequency group F2, the aforementioned signal strength M1 corresponds to the first frequency group F1 The total intensity of each frequency signal in the above-mentioned signal intensity M2 corresponds to the total intensity of each frequency signal in the second frequency group F2. As mentioned earlier, the so-called frequency here can also be the frequency of pulse width modulation.

Then, in step 630, a ratio value is calculated based on M1 and M2. Five examples of this ratio value have been cited above, for example, M1/M2, (M1-M2)/(M1+M2), (M2-M1)/(M1+M2), M1/(M1+M2) Or M2/(M1+M2). In addition to the above five ratios, ordinary technicians familiar with the art can also think of replacing them with any ratio involving the strengths M1 and M2. Then, step 640 is executed to determine whether it is a preset value or falls within a preset range according to the ratio value. If the judgment result is true, step 650 is executed, and it is considered that the sender 110 is floating and not touching the touch panel 120. Otherwise, step 660 is executed to calculate the sensing value of the pen tip section 230 according to the ratio value. The sensed value may be related to the degree of force and/or stroke, or may not be related to the degree of force and/or stroke. The step of calculating the sensed value can use the look-up table method, the straight-line interpolation method, and the quadratic curve method to calculate, depending on the corresponding relationship between the ratio value and the sensed value.

When the embodiment of FIG. 6 is applicable to the embodiments of FIG. 4A and FIG. 4B, additional steps may be performed in step 660. For example, when applied to the embodiment of FIG. 4A, it can be determined whether the ratio value calculated in step 630 falls within the aforementioned first range, second range, third range, or fourth range. Accordingly, in addition to the sensing value of the pen tip section 230, it can also be inferred whether the pen barrel button and/or the eraser button are pressed. Similarly, when used in the embodiment of FIG. 4B, it can be determined that the ratio value calculated in step 630 falls within the above-mentioned first range, fifth range, and sixth range. Scope, or within the seventh scope. Accordingly, in addition to the sensing value of the pen tip section 230, it can also be inferred whether the pen barrel button and/or the eraser button are pressed.

In an embodiment of the present invention, the controller or circuit in the transmitter 110 does not need to determine the degree of force applied to the pen tip section 230, and simply changes the first impedance Z1 of the first element 221 based on the force applied to the pen tip section 230. And one or both of the second impedance Z2 of the second element 222, so that the transmitted signal strength of the first frequency f1 or the first frequency group F1 is equal to the signal strength of the second frequency f2 and the second frequency group F2. One or both changes. In contrast, when the electrical signal is received through the touch panel 120, it depends on the intensity M1 and the second frequency f2 and the second frequency group of the signal part of the first frequency f1 or the first frequency group F1 in the demodulated electrical signal. The ratio of the intensity M2 of the signal part of the group F2 can determine the degree of force applied to the pen tip section 230.

Please refer to FIG. 7A, which is a schematic diagram of the interior of a transmitter 110 according to an embodiment of the present invention. Compared with the embodiment of FIGS. 2 to 5, the embodiment of FIG. 7A also includes a first element 221 having a first impedance Z1, a second element 222 having a second impedance Z2, and a tip section 230 . The above-mentioned first element 221 and second element 222 may be resistance elements, inductance elements, capacitive elements (such as solid capacitors) or electronic elements caused by any combination thereof. In the embodiment shown in FIG. 7A, the second impedance Z2 can be fixed and the first impedance Z1 is variable, and corresponds to the amount of change of a certain sensor, for example, the force of the pen tip section 230 Happening. The first element 221 and the second element 222 in the embodiment of FIG. 7A can be applied to the various embodiments of FIGS. 2 to 5, which will not be described in detail here.

Compared with the foregoing embodiments, the embodiment of FIG. 7A is different in that it further includes a single signal source 714 for feeding electrical signals to the first element 221 and the second element 222 described above. It also includes a control unit 760 for measuring the first current value I1 and the second current value I2 outputted after the electrical signal passes through the first element 221 and the second element 222, respectively. The control unit 760 can also Based on this, a ratio value is calculated. The ratio value can be I1/(I1+I2), I2/(I1+I2), I1/I2, I2/I1, (I1-I2)/(I1+I2), or (I2-I1)/(I1 +I2) etc. Those of ordinary skill in the art can infer other types of ratio values calculated by using the current values I1 and I2.

The calculated ratio can be used to estimate the force of the pen tip section 230. The control unit 760 can send the data derived and calculated from the first current value I1 and the second current value I2 through a transmitter wireless communication unit 770. The host 140 can receive the above-mentioned data from a host wireless communication unit 780 to learn the force of the pen tip section 230.

Please refer to FIG. 7B, which is a schematic diagram of the interior of a transmitter 110 according to an embodiment of the present invention. The difference from the embodiment in FIG. 7A is that the control unit 760 can send the data derived and calculated from the first current value I1 and the second current value I2 through a transmitter wired communication unit 771. The host 140 can receive the aforementioned data from a host wired communication unit 781 to learn the force of the pen tip section 230.

Please refer to FIG. 7C, which is a schematic diagram of the interior of a transmitter 110 according to an embodiment of the present invention. The difference from the embodiment in FIG. 7B is that the transmitter 110 no longer includes the single signal source 714 described above, but directly uses the electrical signal obtained by the transmitter's wired communication unit 771 as the signal source. Since the transmitter wired communication unit 771 is connected to the host wired communication unit 781, the above-mentioned electrical signals can use the power of the host 140.

Please refer to FIG. 7D, which is a schematic diagram of the interior of a transmitter 110 according to an embodiment of the present invention. The difference from the embodiment in FIG. 7A is that the transmitter 110 no longer includes the single signal source 714 mentioned above, but directly uses the pen tip section 230 to approach the touch panel 120 from the first signal source on the touch panel 120. The signal obtained by the electrode 121 and/or the second electrode 122 serves as a signal source.

It is worth mentioning that the embodiments of FIGS. 7A to 7D can be applied to the modification of the embodiment of FIG. 3 In other words, the first element 221 may be the aforementioned first capacitor 321, and the second element 222 may be the aforementioned second capacitor 322. The seventh A to D embodiment can be applied to the fourth A and B embodiment changes, the above-mentioned first element 221 can be connected in parallel with the corresponding components of other switches, or the above-mentioned second element 222 can be connected with other switches Corresponding components are connected in parallel, so that the control unit 760 can know the state of those switches according to the range within which the calculated ratio value falls.

Please refer to FIG. 8, which is a schematic flowchart of a method for judging the sensor tip sensing value of a transmitter by a touch device according to an embodiment of the present invention. The embodiment in FIG. 8 is a method for detecting the sensed value similar to the embodiment in FIG. 6. FIG. 6 is used to calculate the signal strengths M1 and M2 corresponding to the first frequency (group) and the second frequency (group), and then use the ratio of the two to calculate the sensing value. The embodiment of FIG. 8 is suitable for an embodiment that only feeds a single signal source, by calculating the first current quantity I1 and the second current quantity I2 corresponding to the first element 221 and the second element 222, and then using the ratio of the two Value to calculate the sensed value.

This method can be executed by the control unit 760 in the embodiments of FIGS. 7A to 7D. The first two steps 810 and 820 are to calculate the first current I1 and the second current I2 corresponding to the first element 221 and the second element 222, respectively. These two steps 810 and 820 can be performed in no particular order or simultaneously. Then, in step 830, a ratio value is calculated based on I1 and I2. Several examples of this ratio have been cited above, for example I1/(I1+I2), I2/(I1+I2), I1/I2, I2/I1, (I1-I2)/(I1+I2) , Or (I2-I1)/(I1+I2), etc. Then, step 840 is executed to determine whether it is a preset value or falls within a preset range according to the ratio value. If the judgment result is true, step 850 is executed, and it is considered that the sender 110 is floating and is not in contact with the touch panel 120. Otherwise, step 860 is executed to calculate the sensing value of the pen tip segment 230 according to the ratio value. The sensed value may be related to the degree of force and/or stroke, or may not be related to the degree of force and/or stroke. The step of calculating the sensed value can use the look-up table method, Linear interpolation method, quadratic curve method to calculate, depending on the corresponding relationship between the proportional value and the sensed value.

In some embodiments, when the first element 221 or the second element 222 is connected in parallel with other elements corresponding to the switch, as in the embodiments of FIG. 4A and FIG. 4B, additional steps may be performed in step 860. For example, when applied to the embodiment of FIG. 4A, it can be determined whether the ratio calculated in step 830 falls within the first range, second range, third range, or fourth range described above. Accordingly, in addition to the sensing value of the pen tip section 230, it can also be inferred whether the pen barrel button and/or the eraser button are pressed. Similarly, when used in the embodiment of FIG. 4B, it can be determined whether the ratio calculated in step 830 falls within the first range, the fifth range, the sixth range, or the seventh range. Accordingly, in addition to the sensing value of the pen tip section 230, it can also be inferred whether the pen barrel button and/or the eraser button are pressed.

Please refer to FIG. 9A, which is a timing diagram of the signal modulation of the transmitter 110 according to an embodiment of the present invention. The embodiment of FIG. 9A can be applied to the transmitter 110 of FIGS. 2 to 5. The horizontal axis of FIG. 9A is the time axis, and the sequence is from left to right. As shown in FIG. 9A, before the touch panel/screen 120 emits a beacon signal, an optional noise detection period may be included. The noise detected during the noise detection may come from the touch panel/screen and its electronic system or background environment. The touch panel/screen 120 and the touch processing device 130 can detect one or more frequencies included in the noise signal. The part about noise detection will be explained later.

In one embodiment, the touch panel/screen 120 emits a beacon signal, and the transmitter 110 includes a demodulator that can detect the beacon signal. Please refer to FIG. 29, which is a block diagram of a beacon signal detection system according to an embodiment of the present invention. The detecting beacon signal system 2900 includes a receiving electrode 2910, a detecting module 2920, and a demodulator 2930. In an embodiment, the receiving electrode 2910 may be the above-mentioned ring electrode 550 or the above-mentioned pen tip section. 230, or other electrodes. The receiving electrode 2910 sends the received signal to the subsequent detection module 2910.

The detection module 2910 includes an analog front end 2911 and a comparator 2912. Those of ordinary skill in the art can understand what the analog front end does, and will not be detailed here. In this embodiment, the analog front end 2911 may include outputting a voltage value representing the signal strength. The comparator 2912 is used to compare a reference voltage Vref with a voltage signal indicating the strength of the received signal. When the voltage signal is higher than the reference voltage, it means that a strong enough signal is received. Therefore, the comparator 2912 outputs an activation signal or an enabling signal to the demodulator 2930. The demodulator 2930 can demodulate the received signal so as to know whether the received signal contains the frequency of the lighthouse signal. When the voltage signal is lower than the reference voltage, the comparator 2912 can output a shutdown signal to the demodulator 2930, and the demodulator 2930 stops demodulating the received signal.

When the transmitter 110 does not receive a lighthouse signal for a period of time, it can switch to a sleep mode and turn off the demodulator 2930 described above to save power consumption. However, since the detection module 2920 consumes less power, it can continuously detect whether the received signal strength exceeds a predetermined value in the sleep mode. When a predetermined value is exceeded, the sleep mode can be switched to a less power-saving energy-saving mode, and the demodulator 2930 is activated for demodulation. At the same time, the rest of the transmitter 110 is still in the closed state. Assuming that the demodulator 2930 considers that the received signal does not contain a beacon signal, after a period of time, the demodulator 2930 can be turned off, and the power-saving mode enters a more power-saving sleep mode. Conversely, when the demodulator 2930 considers that the received signal contains a beacon signal, the demodulator 2930 can wake up other parts of the transmitter 110, so that the transmitter 110 is converted from the energy-saving mode to the normal working mode .

Now returning to the embodiment of FIG. 9A, after a delay time of L0 length, The transmitter 110 sends out electrical signals in the T0 period and the T1 period, respectively. Between these two periods T0 and T1, there may also be a delay time of L1 length. The two periods T0 and T1 can be of equal length or unequal length. T0 and T1 can be collectively referred to as a signal frame. The touch processing device 130 detects the electrical signal sent by the transmitter 110 during the two periods T0 and T1. Then, after an optional delay time of L2 length, the touch processing device 130 performs optional detection steps in other modes, such as the aforementioned capacitive detection mode, for detecting inactive pens or fingers.

The present invention does not limit the length of the aforementioned delay times L0, L1, and L2, and these three can be zero or any length of time. The length of the three can be related or not in any way. In one embodiment, among the various time periods shown in FIG. 9A, only the T0 and T1 time periods in the signal frame are necessary, and other time periods or steps are optional.

Table I

Please refer to Table 1, which is a schematic diagram of modulation of the electrical signal of the transmitter 110 according to an embodiment of the present invention. In Table 1, the transmitter 110 is in a suspended state, that is, the force sensor does not feel any pressure. Since the pen tip section 230 of the transmitter 110 does not touch the touch panel/screen 120, in order to enhance the signal, in the embodiment of Table 1, the first signal source 211 and the second signal source 212 are in the same time period. Among them, the same frequency group Fx is generated. For example, in the state where the pen button is pressed, during the T0 period, the first signal source 211 and the second signal source 212 both transmit the frequency group F0, and during the T1 period, the first signal source 211 and the second signal The sources 212 all transmit frequency group F1. When the touch processing device 130 detects the frequency group F0 in the T0 period, it detects in the T1 period When the frequency group F1 is reached, it can be inferred that the penholder button of the transmitter 110 in the floating state has been pressed.

The aforementioned frequency group Fx includes signals of at least one frequency, which can be interchanged with each other. For example, frequency group F0 can include frequencies f0 and f3, frequency group F1 can include frequencies f1 and f4, frequency group F2 can include frequencies f2 and f5, and so on. Regardless of whether the frequency f0 or the frequency f3 is received, the touch processing device 130 will regard it as receiving the frequency group F0.

In another embodiment, the transmitter 110 in the floating state does not necessarily require that the two signal sources 211 and 212 both emit signals of the same frequency group. The present invention does not limit Table 1 as the only embodiment. In addition, the sender 110 may also include more buttons or sensors, and the present invention is not limited to only two buttons.

Table II

Please refer to Table 2, which is a schematic diagram of the modulation of the electrical signal of the transmitter 110 according to an embodiment of the present invention. In Table 2, the tip section 230 of the transmitter 110 is in contact, that is, the force sensor feels pressure.

In the embodiment shown in FIG. 4A, the following is a situation where the pen button SWB is pressed. During the T0 period, the signal source of the first signal source 211 is grounded, and the second signal source 212 sends out the frequency group F0. Therefore, the electrical signal of the transmitter 110 has only the frequency group sent by the second signal source 212 during the T0 period. F0. During the T1 period, the signal source of the second signal source 212 is grounded, and the first signal source 211 sends out the frequency group F1. Also because the impedance value of the first capacitor 321 changes during contact, it can be The strength ratio of the F0 and F1 signals received during T0 and T1 periods is used to calculate the strength of the pen tip section 230. In addition, since the touch processing device 130 detects the F0 signal during the T0 period and detects the F1 signal during the T1 period, it can be inferred that the pen button is pressed.

In the embodiment shown in FIG. 4A, the following is a situation where the pen button SWB is pressed. During the T0 period, the signal source of the first signal source 211 is grounded, the second signal source 212 emits a frequency group F0, and the second capacitor 322 is connected in parallel with the barrel capacitor 442. Although the electrical signal of the transmitter 110 has only the frequency group F0 sent by the second signal source 212 during the T0 period, its signal strength is different from the case where the penholder button SWB is not pressed. During the T1 period, the signal source of the second signal source 212 is grounded, and the first signal source 211 sends out the frequency group F1. Also, since the impedance value of the first capacitor 321 changes during contact, it can be divided according to the time periods T0 and T1. The intensity ratio of the received F0 and F1 signals is used to calculate the force of the stylus. In addition, since the touch processing device 130 detects the F0 signal during the T0 period and detects the F1 signal during the T1 period, it can be inferred that the pen button is pressed.

Table Three

Please refer to Table 3, which is a schematic diagram of modulation of the electrical signal of the transmitter 110 according to an embodiment of the present invention. In this embodiment, it is possible to know which buttons are pressed according to the frequency group.

Table Four

Please refer to Table 4, which is a schematic diagram of the modulation of the electrical signal of the transmitter 110 according to an embodiment of the present invention. In this embodiment, it is possible to know which buttons are pressed according to the frequency group, and also rely on the ratio of the signal strength received during T0 and T1 to calculate the force of the stylus tip.

Please refer to FIG. 9B, which is a timing diagram of signal modulation of the transmitter 110 according to an embodiment of the present invention. This is another modification of the embodiment of FIG. 9A. The difference between FIG. 9B and FIG. 9A is that the noise detection step is performed after the T1 period. Then, perform other modes of detection.

Please refer to FIG. 9C, which is a timing diagram of the signal modulation of the transmitter 110 according to an embodiment of the present invention. The signal modulation of FIG. 9C can be applied to the transmitter 110 shown in FIG. 5, and another function of adding the ring electrode 550 is to strengthen the signal strength when the active pen is hovering, so that the touch panel can detect the hovering of the active pen. range.

The signal of FIG. 9C is modulated to a signal sent when the transmitter 110 is in a floating state. In this state, the signal frame sent by the transmitter 110 only contains a single R period. During this period of R, the ring electrode 550 and the tip section 230 can simultaneously emit electrical signals. In one embodiment, these electrical signals may come from the same signal source, have the same frequency and/or modulation method. For example, the ring electrode and the pen tip all emit electrical signals from the third signal source 513. For another example, the ring electrode 550 and the pen tip section 230 can jointly send out the electrical signals of the first, second, and third signal sources in sequence, so as to utilize the maximum power of each signal source respectively. During the R period, the touch processing device 130 only needs to detect the electrical signal emitted by the ring electrode 550 to know that the transmitter 110 is floating on the touch A certain position on the panel 120. If the electrical signals emitted by the ring electrode 550 and the pen tip section 230 come from the same signal source, or have the same frequency group, the signal strength will be the largest, so that the touch panel can detect the floating range of the stylus to the maximum . In another embodiment, in the R period, the electric signal may be transmitted only through the ring electrode 550.

Please refer to FIG. 9D, which is a timing diagram of the signal modulation of the transmitter 110 according to an embodiment of the present invention. The signal modulation of FIG. 9D can be applied to the transmitter 110 shown in FIG. 5. In FIG. 9C, a delay time or blank period L1 is included after the R period, after which the touch panel performs other types of detection. In the embodiment of FIG. 9D, compared with that of FIG. 9C, the time of the L1 period is longer. Compared with the embodiment of FIG. 9E in FIG. 9D, the length of the L1 period is equal to the sum of the L1 period, the T0 period, the L2 period, the T1 period, and the T3 period of FIG. 9E. Therefore, if the touch processing device 130 of FIG. 9D does not detect any electrical signal within the fixed length of L1 period, it can be known that the transmitter 110 is in a floating state.

Please refer to FIG. 9E, which is a timing diagram of the signal modulation of the transmitter 110 according to an embodiment of the present invention. The signal modulation of FIG. 9E can be applied to the transmitter 110 shown in FIG. 5. The embodiment of FIG. 9E can be said to add the R period to the beginning of the signal frame of the embodiment of FIG. 9A. In this embodiment, regardless of whether the pen tip section 230 is pressed or not, the transmitter 110 will always send an electrical signal from the pen tip during the T0 period and the T1 period, thereby saving the design of some logic circuits. However, compared with the embodiments of FIG. 9C and FIG. 9D, the embodiment of FIG. 9E wastes the power of the electrical signals emitted during the T0 period and the T1 period. From another point of view, the touch processing device 130 does not need to perform detection in the R period, as long as the electrical signal emitted by the pen tip section 230 is detected in the T0 period and T1 period, the pen tip section 230 can naturally be known. Whether it is under pressure, so as to know whether the transmitter 110 is in a floating state.

Please refer to FIG. 9F, which is an example of the sender 110 according to an embodiment of the present invention. A timing diagram of signal modulation. The signal modulation of FIG. 9F can be applied to the transmitter 110 shown in FIG. 5. In the embodiment of FIG. 9E, the proportional relationship between the length of the R period, the T0 period, and the T1 period is not limited. In the embodiment of FIG. 9F, the ratio of the length of the R period to the T0 period and the T1 period is 1:2:4. In this way, it is assumed that the touch processing device 130 can perform N samplings per unit time, and N is a positive integer. Therefore, in the R period, T0 period, and T1 period, the touch panel can perform N: 2N: 4N sampling. The present invention does not limit the length ratio of these three time periods. For example, the time period in which the electrical signal power is the strongest can last for the smallest unit time, and the time period in which the electrical signal power is the smallest lasts for the longest unit time. For example, the length ratio can be 1:3:2, or 1:2:3, etc., depending on the design. Although in the above paragraph, only two time periods of modulation are cited, T0 and T1, the present invention is not limited to two time periods of modulation, and can be applied to more time periods of modulation.

In one embodiment, the transmitter 110 may send out a stronger electric signal when the pen tip is not in contact, and send out a lower intensity electric signal when the pen tip is in contact. Accordingly, the touch processing device 130 can have a greater probability of detecting the transmitter 110 floating above the touch panel 120. Moreover, when the transmitter 110 contacts the touch panel 120, the energy consumed by the transmitter 110 can be saved.

For example, in the embodiments of FIGS. 9C and 9D, that is, when the tip section 230 is not touched, the electrical signal emitted during the R period may be greater than the electrical signal emitted during the L1 period corresponding to the T0 period and the T1 period.

The signal modulation indicates that the transmitter 110 is in a floating state. In this state, the signal frame of the electrical signal sent by the transmitter 110 only includes the R period. During the R period, the ring electrode 550 and the tip section 230 simultaneously emit electrical signals. In an embodiment, the electrical signal may come from the same signal source and have the same frequency and/or modulation method. In one embodiment, the ring electrode 550 The tip section 230 sends a signal from the third signal source 513. In another embodiment, the ring electrode 550 and the pen tip section 230 may come from the first signal source 211, the second signal source 212, and the third signal source 513. Therefore, the electrical signal emitted during the R period is the sum of the outputs of the three signal sources 211, 212, and 513.

In the embodiment shown in FIG. 9A, Table 1 shows that when the transmitter 110 is in the floating state, the output power of the first signal source 211 and the second signal source 212 is utilized. Table 2 shows that when the transmitter 110 is in the contact state, only the output power of the first signal source 211 or the second signal source 212 is used in the T0 period and the T1 period. Therefore, the transmitter 110 can send out a stronger electric signal when the pen tip is not in contact, and send out a lower intensity electric signal when the pen tip is in contact.

Similarly, Table 3 shows that when the transmitter 110 is in the floating state, the output power of the first signal source 211 and the second signal source 212 is utilized. Table 4 shows that when the transmitter 110 is in the contact state, only the output power of the first signal source 211 or the second signal source 212 is used in the T0 period and the T1 period. Therefore, the transmitter 110 can send out a stronger electric signal when the pen tip is not in contact, and send out a lower intensity electric signal when the pen tip is in contact.

Why add the steps and time periods of noise detection in the embodiments of FIGS. 9A to 9F? Please refer to FIG. 10, which is a schematic diagram of noise propagation according to an embodiment of the present invention. In FIG. 10, the electronic system 100 where the touch panel/screen 120 is located emits noise at frequency f0, and the frequency f0 is exactly one frequency in the frequency group F0. Assume that the frequency group F0 also contains another frequency f3. When the user holds the electronic system 100, the noise of the frequency f0 will be transmitted to the touch panel/screen 120 through the user's fingers. If the noise detection step is not performed, the touch panel/screen 120 may mistakenly regard the f0 frequency signal transmitted by the finger as an electrical signal from the transmitter 110 during the signal frame period. Therefore, if the noise of f0 frequency is detected in advance, it can be The signal source of f0 frequency is filtered out during the period of the signal frame.

Assuming that the transmitter 110 has an automatic frequency conversion function, when the transmitter 110 itself detects that the touch panel/screen 120 emits noise at frequency f0, it will automatically switch to another frequency f3 in the same frequency group F0. As a result, during the period of the signal frame, the touch processing device 130 detects the f3 frequency from the transmitter 110 and the f0 frequency from the finger, which causes confusion. Therefore, in the embodiment shown in FIG. 9B, in the case of aliasing, a noise detection step can be performed after the T1 period or the signal frame. Since the transmitter 110 has stopped sending the signal at the frequency f3, the finger and the electronic system 100 still continue to emit noise at the frequency f0. The touch processing device 130 can infer that, among the signals detected in the original signal frame period, the signal with the frequency f3 is the signal from the transmitter 110.

In the above description of FIG. 2, the impedance change of the first element 221 is used to adjust the ratio of the signal strength of a plurality of frequencies. Please refer to FIG. 11, which is a schematic structural diagram of a first capacitor 221 according to another embodiment of the present invention. The impedance change of the first capacitor 221 is used to adjust the ratio of the signal strength of the plurality of frequencies. The traditional capacitive element is formed by two conductive metal plates. The permittivity C is proportional to the dielectric constant and the area of the metal plate, and inversely proportional to the distance between the metal plates.

One of the main spirits of the above-mentioned embodiment is to use a mechanical structure to convert the stroke of the elastic nib section 230 along the axis of the transmitter 110 to be perpendicular to the axis of the transmitter 110 or to the axis of the transmitter 110. Stroke in an angled direction. By the change of the stroke, the permittivity of the first capacitor 221 and its corresponding first impedance Z1 are changed, and the permittivity of the second capacitor 222 and its corresponding second impedance Z2 are fixed, and the first frequency in the electrical signal is changed accordingly. The ratio of the intensity M1 of the signal part of the (group) to the intensity M2 of the signal part of the second frequency (group).

In Figure 11, there are three metal plates that are not in contact with each other. The first metal plate 1110 and the second metal plate 1120 form a first capacitor 221, and the second metal plate 1120 and the third metal plate 1130 form a second capacitor 222. In an example, the first metal plate 1110 is formed on a flexible circuit board or printed circuit board, with insulating varnish or another layer of insulating board on the surface. The second metal plate 1120 and the third metal plate 1130 are formed on two layers of the same circuit board or printed circuit board, and the surface of the second metal plate 1120 and the third metal plate 1130 are provided with insulating paint or another layer of insulating plate. The second metal plate 1120 is coupled to the front pen tip section 230 via another circuit. The pen tip is fixed to a lifting element 1140 (such as the inclined plane device described below), and part or all of the first metal plate 1110 (or flexible circuit board or printed circuit board) is raised directly or indirectly according to the displacement of the pen tip section 230, or caused The deformation of the first metal plate 1110 (or flexible circuit board or printed circuit board) in the direction perpendicular to the axis of the transmitter 110 is collectively referred to as the displacement in the direction perpendicular to the axis of the stylus in the following description.

The first metal plate 1110 is supplied with an electric signal having a first frequency (group), and the third metal plate 1130 is supplied with an electric signal having a second frequency (group). Therefore, the second metal plate 1120 induces and generates an electrical signal having the first frequency (group) and the second frequency (group), which are transmitted to the touch panel 120 through the pen tip section 230 in the front. When the pen tip section 230 is not under force, the first metal plate 1110 and the circuit board to which it belongs have no displacement perpendicular to the axis of the transmitter 110. However, after the nib section 230 is stressed, the bevel device 1140 behind the nib section converts the force from a direction parallel to the axis to a direction perpendicular to the axis, causing the circuit board to which the first metal plate 1110 belongs to deform And displacement, which in turn causes the dielectric constant of the first capacitor 221 to change. Therefore, the permittivity C1 and the first impedance Z1 of the first capacitor 221 also change accordingly. After the pen tip section 230 is stressed, the circuit board to which the second metal plate 1120 and the third metal plate 1130 belong is displaced as a whole, so the permittivity C2 and impedance Z2 of the second capacitor 222 remain unchanged.

Since the circuit board on which the first metal plate 1110 is located will change to an upward square shape, this embodiment may include at least one supporting element 1150 to provide supporting force in the opposite direction, so that after the force of the pen tip section 230 disappears, it helps the first metal plate 1110 The circuit board on which it is located returns to its original state. Before being deformed, the supporting force provided by the supporting element 1150 may be zero.

In an example of this embodiment, the permittivity of the first capacitor 221 and the second capacitor 222 can be designed to be the same. In the case of the same permittivity, the permittivity, distance, and area of the two capacitors can be the same. Of course, the present invention does not limit the permittivity of the two capacitors 221 and 222 to be the same, as long as the touch processing device 130 knows the corresponding impedance ratio of the two capacitors of the transmitter 110.

In this embodiment, an inexpensive circuit board or printed circuit board is used to replace the more expensive force sensing resistor. Moreover, when the permittivity of the first capacitor 221 and the second capacitor 222 are the same, when the external environment changes, their dielectric constant will also change at the same time, thereby maintaining the preset value of the ratio. In addition, the transmitter 110 itself does not need active control components to adjust the ratio of the two impedances Z1 and Z2, and only needs to passively provide electrical signals, which can save a lot of resources.

Please refer to FIG. 12, which is a reduced representation of the embodiment shown in FIG. 11, which omits the circuit board, the supporting element 1150, and the connection circuit between the second metal plate 1120 and the pen tip section 230. The description of the embodiment shown in FIG. 12 can refer to FIG. 11.

Please refer to FIG. 13, which is a modification of the embodiment shown in FIG. 12, in which the third metal plate 1130 can be moved to the rear of the first metal plate 110 and is electrically disconnected from the first metal plate 1110. After the pen tip section 230 is stressed, only the first metal plate 1110 and the circuit board to which it belongs will be displaced and deformed. In an embodiment, the first metal plate 1110 and the third metal plate 1130 may be formed on the same circuit board.

Please refer to FIG. 14, which is a modification of the embodiment shown in FIG. 13, in which the first metal plate 1110 and the third metal plate 1130 can be divided into two metal plates A and B, respectively, and feed the first frequency respectively. (Group) and the second frequency (group). When the pen tip section 230 is stressed, the first metal plate A 1110A, the first metal plate B 1110B and the circuit board to which they belong will be displaced and deformed. However, the third metal plate A 1130A and the third metal plate B 1130B and the circuit board to which they belong will not be displaced or deformed. Compared with the embodiment shown in FIG. 13, due to the displacement and deformation of the two metal plates 1110A and 1110B, the amount of change will be larger and more obvious than the embodiment shown in FIG. 13.

Please refer to FIG. 15, which is a variation of the embodiment shown in FIG. 14, in which the second metal plate 1120 is also divided into two metal plates 1120A and 1120B, but the second metal plate A 1120A and the second metal plate B 1120B It is commonly connected to the pen tip section 230 by a circuit. The first metal plate A 1110A and the second metal plate A 1120A form a first capacitor A 221A, and the second metal plate A 1120A and the third metal plate A 1130A form a second capacitor A 222A. The first metal plate B 1110B and the second metal plate B 1120B form a first capacitor B 221B, and the second metal plate B 1120B and the third metal plate B 1130B form a second capacitor B 222B. When the pen tip section 230 is stressed, the first metal plate A 1110A, the first metal plate B 1110B and the circuit board to which they belong will be displaced and deformed. However, the third metal plate A 1130A and the third metal plate B 1130B and the circuit board to which they belong will not be displaced or deformed. Compared with the embodiment shown in FIG. 13, due to the displacement deformation of the two metal plates, the amount of change will be larger and more obvious than the embodiment shown in FIG. 13.

Please refer to FIG. 16A, which is a schematic diagram according to an embodiment of the present invention. In the embodiment shown in FIG. 16A, the first metal plate 1110, the second metal plate 1120, and the third metal plate 1130 are included from top to bottom. Among them, the first metal plate 1110 and the third metal plate 1130 are fixed, and respectively feed signals of a first frequency (group) and a second frequency (group). The second metal plate 1120 will sense The signals of the first frequency (group) and the second frequency (group) to the upper and lower metal plates are output, and the electrical signal with the first frequency (group) and the second frequency (group) mixed is output.

A first capacitor 221 is formed between the first metal plate 1110 and the second metal plate 1120, and a second capacitor 222 is formed between the second metal plate 1120 and the third metal plate 1130. When the second metal plate 1120 is not deformed, under the same environment, the impedance values of the first capacitor 221 and the second capacitor 222 are fixed, so the analysis of the electrical signal corresponds to the first frequency (group) and the second The frequency (group) intensities M1 and M2 are calculated based on these two intensity values. When the ratio value is a preset value or falls within a preset range, it can be known that the second metal plate 1120 is not deformed.

When the second metal plate 1120 is deformed, the impedance value and the capacitance value of the first capacitor 221 and the second capacitor 222 change. Therefore, a proportional value is calculated based on the two strength values, and the deformation or force of the second metal plate 1120 can be reversed according to the change of the proportional value. Here, the steps of the embodiment shown in FIG. 6 can be applied.

Please refer to FIG. 16B, which is a modification of the embodiment shown in FIG. 16A. The second metal plate 1120 and the third metal plate 1130 are fixed, and respectively feed signals of the first frequency (group) and the second frequency (group). The first metal plate 1110 will sense the signals of the first frequency (group) and the second frequency (group) of the second metal plate 1120 and the third metal plate 1130 below, and output signals with a mixed first frequency (group) ) And the electrical signal of the second frequency (group).

A first capacitor 221 is formed between the first metal plate 1110 and the second metal plate 1120, and a second capacitor 222 is formed between the first metal plate 1110 and the third metal plate 1130. When the first metal plate 1110 is not deformed, under the same environment, the impedance values of the first capacitor 221 and the second capacitor 222 are fixed, so the analysis of the electrical signal corresponds to the first frequency (group) and the second The frequency (group) intensities M1 and M2 are calculated based on these two intensity values. When the ratio value is a preset value or When it falls within a preset range, it can be known that the first metal plate 1110 has not deformed.

When the first metal plate 1110 is deformed, the impedance value and the permittivity of the first capacitor 221 and the second capacitor 222 change. Therefore, a proportional value is calculated based on these two strength values, and the deformation or force condition of the first metal plate 1110 can be reversed according to the change of the proportional value. Here, the steps of the embodiment shown in FIG. 6 can be applied. The above-mentioned impedance value may change with temperature and humidity. The impedance values of the first capacitor 221 and the second capacitor 222 of the present invention also change with temperature and humidity. Therefore, when calculating the ratio value, the temperature and humidity can be reduced or avoided. The influence caused by the proportional value.

Please refer to FIG. 17A and FIG. 17B, which are schematic diagrams of the structure of the first capacitor and the second capacitor according to the present invention. In the embodiment of FIGS. 16A and 16B, the first frequency (group) and the second frequency (group) are fed respectively. In the embodiment of FIGS. 17A and 17B, only driving signals of the same frequency need to be fed. . In other words, it can be applied to the various embodiments of FIGS. 7A to 7D, and the driving signal fed in may be the single signal source 714 of FIGS. 7A and 7B, or it may be the signal from the wired communication unit 771 of the transmitter in FIG. 7C. As the signal source, the signal can also be the signal obtained from the first electrode 121 and/or the second electrode 122 on the touch panel 120 when the pen tip section 230 of FIG. 7D is close to the touch panel 120 as the signal source.

The three-layer metal plate in FIG. 17A has the same structure as the three-layer metal plate in FIG. 16A, and the driving signal with a certain frequency is fed into the deformable second metal plate 1120. Through the capacitance effect with the second metal plate 1120, the first metal plate 1110 will output the induced first current value I1. Similarly, through the capacitive effect with the second metal plate 1120, the third metal plate 1130 will output the induced second current value I2.

A first capacitor 221 is formed between the first metal plate 1110 and the second metal plate 1120, and a second capacitor 222 is formed between the second metal plate 1120 and the third metal plate 1130. When the second metal plate When 1120 is not deformed, the impedance values of the first capacitor 221 and the second capacitor 222 are fixed. Therefore, the current quantities I1 and I2 are analyzed, and a proportional value is calculated based on the two current values. When the ratio value is a preset value or falls within a preset range, it can be known that the second metal plate 1120 is not deformed.

When the second metal plate 1120 is deformed, the impedance value and the permittivity of the first capacitor 221 and the second capacitor 222 change. Therefore, a proportional value is calculated based on the two current values I1 and I2, and the deformation or force of the second metal plate 1120 can be reversed according to the change of the proportional value. Accordingly, the method embodiment shown in FIG. 8 can be applied.

Please refer to FIG. 17B, which is a modification of the embodiment shown in FIG. 17A. The second metal plate 1120 and the third metal plate 1130 are fixed. The aforementioned driving signal with a certain frequency is fed into the deformable first metal plate 1110. Through the capacitance effect with the first metal plate 1110, the second metal plate 1120 outputs the sensed first current value I1. Similarly, through the capacitive effect with the first metal plate 1110, the third metal plate 1130 outputs the induced second current value I2.

A first capacitor 221 is formed between the first metal plate 1110 and the second metal plate 1120, and a second capacitor 222 is formed between the first metal plate 1110 and the third metal plate 1130. When the first metal plate 1110 is not deformed, the impedance values of the first capacitor 221 and the second capacitor 222 are fixed, so the current quantities I1 and I2 are analyzed, and a proportional value is calculated based on the two current values. When the ratio value is a preset value or falls within a preset range, it can be known that the first metal plate 1110 is not deformed.

When the first metal plate 1110 is deformed, the impedance value and the permittivity of the first capacitor 221 and the second capacitor 222 change. Therefore, a proportional value is calculated based on the two current values I1 and I2, and the deformation or force of the first metal plate 1110 can be reversed according to the change of the proportional value. Accordingly, the method embodiment shown in FIG. 8 can be applied.

Please refer to FIG. 18, which is a modification of the embodiment shown in FIG. 11. Figure 11 shows the real The embodiment needs to feed signals of two frequencies. However, in the embodiment shown in FIG. 18, like the embodiments of FIGS. 17A and 17B, it is only necessary to feed a driving signal of a certain frequency to the second metal plate 1120, or to feed a certain signal without knowing the feed. How many frequency components does the incoming signal have.

A first capacitor 221 is formed between the first metal plate 1110 and the second metal plate 1120, and a second capacitor 222 is formed between the second metal plate 1120 and the third metal plate 1130. Since the distance and dielectric constant between the second metal plate 1120 and the third metal plate 1130 will not change, the capacitance and impedance of the second capacitor 222 are fixed. When the first metal plate 1110 is not deformed, the impedance values of the first capacitor 221 and the second capacitor 222 are fixed, so the current quantities I1 and I2 are analyzed, and a proportional value is calculated based on the two current values. When the ratio value is a preset value or falls within a preset range, it can be known that the first metal plate 1110 is not deformed. However, the permittivity and impedance of the first capacitor 221 will change due to the deformation of the first metal plate. Therefore, when the first metal plate 1110 deforms due to an external force, the first current value I1 will change. Therefore, the ratio value related to the current values I1 and I2 will also change, and the deformation or force of the first metal plate 1110 can be reversed based on this. Accordingly, the method embodiment shown in FIG. 8 can be applied.

In another embodiment of the present invention, the controller or circuit in the transmitter 110 may feed a driving signal of a certain frequency to the second metal plate 1120, and calculate the corresponding values of the first capacitor 221 and the second capacitor 222 The current quantities I1 and I2 are then used to calculate the sensing value by using the ratio of the two to determine the degree of force on the pen tip. In other words, with the aforementioned first impedance Z1 and second impedance Z2, the present invention provides a force sensing capacitor (FSC; force sensing capacitor), which can be used to replace traditional pressure sensing components, such as a pressure sensing resistor FSR. Provide stress judgments. The pressure sensing capacitor provided by the present invention has the characteristics of low cost and not easily affected by temperature and humidity. In the foregoing figures, the use of a flexible printed circuit board as a force sensing capacitor is disclosed. Features of the invention One is to provide other forms of force sensing capacitors.

Please refer to FIG. 19A, which is an exploded schematic diagram of the center section of the force sensing capacitor of the transmitter 110 and its structure. Please note that the scale of Figures 19A to 19E has been changed to highlight certain parts. In addition, some fixing elements are omitted in order to simplify the description. In FIG. 19A, the leftmost element is a long-bar-shaped nib or nib section 230, and the nib portion may be a conductive body. For the sake of convenience, the tip section 230 is referred to as the front end of the transmitter 110 or the active pen. When the tip section 230 is in contact with the front movable element 1971, the pen tip section 230 is electrically coupled with the front movable element 1971. The front movable element 1971 is combined with the concave fastener in the middle of the rear movable element 1972 by the male fastener in the middle. In one embodiment, the male fastener and the female fastener may include threads. The front movable element 1971 and the rear movable element 1972 may be conductors or conductive elements, for example, metal parts.

FIG. 19A includes a housing 1980 that can annularly contain the aforementioned front and rear movable elements 1971 and 1972. For the sake of simplicity, FIG. 19A only shows a part of the housing 1980. The portion of the housing 1980 close to the pen tip section 230 is retracted into a neck with a smaller diameter, and a shoulder as a force-bearing part may be included between the neck and the portion of the housing 1980 with a larger diameter. In FIG. 19A, at least one elastic element 1978 is sandwiched between the force-bearing part and the front movable element 1971 for urging the housing 1980 and the front movable element 1971 along the long axis of the pen, respectively. The elastic element 1978 may be a spring, an elastic sheet or other types of elastic elements. In an embodiment, unlike FIG. 19A, the elastic element 1978 can surround the movable element 1970 and the neck of the housing 1980.

In another embodiment, the elastic element 1978 can apply force to the housing 1980 and the rear movable element 1972 respectively along the long axis of the pen. Since the front and rear movable elements 1971 and 1972 can be combined into a movable element 1970 by fasteners, no matter it is for the front movable element Applying force by 1971 or the rear movable element 1972 can push the movable element 1970 toward the tip section 230, and then push the tip section 230 toward the front end.

When the pen tip section 230 is forced to the right or to the rear in the figure, it will overcome the elastic force of the elastic element 1978 and press the movable element 1970 until a certain part of the movable element 1970 contacts the force-bearing part of the housing 1980. Therefore, the design provided by the present invention can allow the movable element 1970 to move within the neck of the housing 1980 along the long axis of the pen for a stroke. Similarly, since the movable element 1970 abuts the pen tip section 230, the pen tip section 230 can also move along the long axis of the pen to achieve the same stroke. The length of the stroke can vary depending on the design, for example, it can be 1mm or 0.5mm. The invention does not limit the length of the stroke.

At the rear end of the rear movable element 1972, there is an insulating film 1973. At the rear end of the insulating film 1973, a compressible conductor 1974 is also included. In one embodiment, the compressible conductor 1974 may be a conductive rubber or an elastic element mixed with a conductor. Since the insulating film 1973 is sandwiched between the movable element 1970 and the compressible conductor 1974, the movable element 1970, the insulating film 1973, and the compressible conductor 1974 form a capacitor, or a force sensing capacitor. The force sensing capacitor provided by the present application may be the first capacitor 221 in FIGS. 2 to 5. In short, the force sensing capacitor provided in this application can be applied to the above-mentioned various embodiments.

The compressible conductor 1974 is fixed on a conductor base 1975, and the conductor base 1975 can be fixed on the inner peripheral surface of the housing 1980 by a fastener or a fastener. When the movable element 1970 moves to the rear end or to the right, since the position of the conductor base 1975 does not move, the rear end movable element 1972 compresses the compressible conductor 1974, causing the capacitance value of the force sensing capacitor to change.

Due to the shape of the pen, the rest of the circuit and battery module can be located at the rear end of the conductor base 1975. In Figure 19A, these components can use a printed circuit board 1990 as representative. As the first end of the force sensing capacitor, the above-mentioned movable element 1970 is connected to the printed circuit board 1990 through a movable element wire 1977. As the second end of the force sensing capacitor, the aforementioned conductor base 1975 is connected to the printed circuit board 1990 by a base wire 1976.

The base wire 1976 may also be another elastic element. In some embodiments, unlike FIG. 19A, the base wire 1976 may surround the conductor base 1975. In another embodiment, the conductor base 1975 is not conductive, and the base wire 1976 passes through the conductor base 1975 to electrically couple with the compressible conductor 1974.

In one embodiment, the method for manufacturing the insulating film 1973 may be to immerse the right end plane of the rear movable element 1972 in an insulating liquid. After the insulating liquid is air-dried, an insulating film 1973 is naturally formed on the right end plane of the rear movable element 1972.

Please refer to FIG. 20, which is a schematic cross-sectional view of the contact surface between the compressible conductor 1974 and the insulating film 1973 in FIG. 19A. FIG. 20 contains four examples of contact surfaces between the compressible conductor 1974 and the insulating film 1973. The embodiment of (a) is the contact surface of the central protrusion, the embodiment of (b) is the contact surface of a single inclined surface, the embodiment of (c) is the contact surface of the central cone shape, and the embodiment of (d) is the multiple protrusions的contact surface. The applicant believes that the present invention does not limit the shape of the contact surface.

Although the surface on which the insulating film 1973 is formed on the movable element 1970 is a flat surface, the present invention is not limited to this. The surface may be a contact surface as shown in FIG. 20, a central protrusion, a single inclined surface, a central cone shape, or a contact surface with multiple protrusions. In other words, in some embodiments, the surfaces of both the compressible conductor 1974 and the insulating film 1973 are not flat.

Please refer to FIG. 19B, which is a schematic cross-sectional view after the structure shown in FIG. 19A is assembled. After the combination, the front movable element 1971 and the rear movable element 1972 have been combined into a single movable element 1970. Between the movable element 1970 and the bearing part of the housing 1980 The elastic element 1978 is connected, and the elastic tension of the elastic element 1978 makes the movable element 1970 as a whole abut the pen tip section 230 toward the front end until the rear end movable element 1972 abuts the force-bearing part of the housing 1980. A movable stroke d is left between the movable element 1970 and the housing 1980. At this time, the compressible conductor 1974 is not compressed and deformed. It is assumed that the capacitance value of the force sensing capacitor is a first capacitance value.

Please refer to FIG. 19C, which is another cross-sectional schematic diagram after the structure shown in FIG. 19A is combined. Compared with FIG. 19B, the pen tip section 230 is pressed toward the rear end, and therefore moves toward the rear end. Affected by the movement of the nib section 230, the movable element 1970 overcomes the elastic tension of the elastic element 1978 and moves to the rear end for the entire stroke d until the front movable element 1971 abuts the force-bearing part of the housing 1980. At this time, the compressible conductor 1974 is compressed by the movable element 1970 and the insulating film 1973 and deformed. The capacitance value of the force sensing capacitor is a second capacitance value, which is different from the aforementioned first capacitance value.

Between the end of the stroke shown in FIG. 19B and FIG. 19C, the movable element 1970 can have an infinite number of positions, or the compressible conductor 1974 can have an infinite number of compression levels, or the compressible conductor 1974 and the insulating film 1973 The area of the contact surface can have countless size changes, and a certain position, pressure level or area size change can make the capacitance value of the force sensing capacitor change.

Please refer to FIG. 19D, which is an exploded schematic diagram of the center section of the force sensing capacitor and the structure of the transmitter 110 according to an embodiment of the present invention. The difference from FIG. 19B is that the positions of the compressible conductor 1974 and the insulating film 1973 are interchanged. In any case, when the movable element 1970 moves to the rear end, the compressible conductor 1974 will be compressed by the insulating film 1973 and the conductor base 1975 and deform. In this way, the capacitance value of the force sensing capacitor can also be changed.

Please refer to FIG. 19E, which is an exploded schematic diagram of the center section of the force sensing capacitor and the structure of the transmitter 110 according to an embodiment of the present invention. The difference between FIG. 19E and FIG. 19B is that the right end of the back-end movable element 1972 is no longer an insulating film 1973, but a compressible dielectric material 1979. For example, insulating rubber, plastic, foam, etc. The conductor connected to the conductor base 1975 is changed to an incompressible conductor, such as a metal block or graphite. As the thickness of the compressible insulating material 1979 becomes smaller when the movable element 1970 is pressed, the distance between the movable element 1970 and the conductor becomes smaller, so the capacitance value of the force sensing capacitor will change accordingly. In terms of manufacturing cost, the conductor of FIG. 19E is more expensive than the compressible conductor 1974 of FIG. 19A.

In a variation of the embodiment of FIG. 19E, the contact surface of the conductor and the compressible insulating material 1979 can be made into contact surfaces of various shapes as shown in FIG. 20. In another variation, the contact surface between the compressible insulating material 1979 and the conductor can be made into contact surfaces of various shapes as shown in FIG. 20.

Similar to Figure 19D, the positions of the compressible insulating material 1979 and the conductor can also be interchanged. The compressible insulating material 1979 may be connected to the conductor base 1975, and the conductor may be connected to the rear end of the movable element 1970. When the movable element 1970 moves to the rear end, the conductor will cause the compressible insulating material 1979 to deform, causing the capacitance value of the force sensing capacitor to change.

Please refer to FIG. 21, which is a schematic diagram of a pressure sensor according to an embodiment of the present invention. As shown in the figure, the pressure sensor 2110 has two input terminals a, b and an output terminal c, and the two input terminals a, b and output terminal c are electrically connected to a control unit 2120. The control unit 2120 inputs the first frequency (group) F1 and the second frequency (group) F2 to the pressure sensor 2110 through the input terminals a and b, respectively, and receives the pressure sensor through the output terminal c 2110 output signal. The control The unit 2120 can implement the method shown in FIG. 6.

When the external pressure drives the capacitor C1 to change the capacitance value, the control unit 2120 can also parse the pressure change corresponding to the capacitance value change. Therefore, the pressure sensor 2110 of this embodiment can be widely used in various pressure measurement devices. For example, load sensor. In an application, the aforementioned pressure sensor 2110 can also be used in another stylus. After the control unit 2120 analyzes the received pressure change of the stylus tip, the control unit 2120 drives a signal with a predetermined frequency f0 to transmit The unit transmits pressure changes to the touch panel.

The prerequisite is that the transmitter 110 can transmit the above-mentioned electrical signal within a period of time after receiving the lighthouse signal sent by the touch panel 120, so that the touch processing device 130 can detect the transmitter 110 and its sensor. status. When the beacon signal is not received for the first period of time, the transmitter 110 can enter the power saving mode, and detect whether there is a beacon signal after a detection period, and continue to detect until the beacon signal is received. Beacon signal, where the detection period is greater than the transmission period of the beacon signal.

In addition, when the beacon signal is not received for a second period of time, the transmitter 110 may enter a sleep mode, turning off most of the power of the circuit or the controller of the transmitter 110 until it is awakened. In an embodiment of the present invention, in the sleep mode, the transmitter 110 closes related circuits for receiving lighthouse signals and sending electrical signals. The aforementioned sleep mode wake-up may be a button or switch provided in the transmitter 110, and the user manually triggers the button or switch to wake up. In another embodiment of the present invention, the embodiment of FIGS. 23A and 23B, or the embodiment of FIGS. 24A and 24B may be used to wake up. After the pen tip section 230 touches the object, the potential of the first connection port can be changed from low to high, so that the transmitter 110 can send an electrical signal.

In this application, one of the functions of the ring electrode 550 is added, which can be used to receive The above-mentioned beacon signal is not limited to only receiving the beacon signal through the pen tip section 230. Since the area and volume of the ring electrode 550 are larger than the tip of the pen tip section 230, the lighthouse signal can be received at a place far away from the touch panel 120. Or, let the touch panel 120 send a beacon signal with a weak signal strength to reduce the power consumption of the touch panel 120. If the beacon signal is not received within a period of time, the active pen can enter a deeper sleep level to save more power consumption. In a deeper sleep state, the user can touch the pen tip section 230 to restore the transmitter 110 to a normal operating state. The embodiments of FIGS. 23A and 23B, or the embodiments of FIGS. 24A and 24B can be used to wake up the transmitter 110. After the pen tip section 230 touches the object, the potential of the first connection port can be changed from low to high, so that the transmitter 110 can send an electrical signal.

When multiple transmitters 110 are to be operated on a touch panel 120, the touch panel 120 can send out different beacon signals so that the corresponding transmitter 110 can send active signals within a period of time after receiving the beacon signal . The above-mentioned transmitter 110 can also adjust the frequency or modulation mode of the above-mentioned first signal source 211, the second signal source 212, and the third signal source 513 according to different lighthouse signals, so as to facilitate the detection of the touch processing device 130. The signal from the transmitter 110 is detected. Similarly, the above-mentioned different lighthouse signals can adopt different frequencies or modulation methods.

Please refer to FIG. 22, which is a schematic diagram of a pressure sensor according to an embodiment of the present invention. In this embodiment, the control unit 2220 can also feed a drive signal of a certain frequency to an input terminal c of the pressure sensor 2210, and receive output from the output terminals a and b corresponding to the first capacitor C1 and the second capacitor C1 and the second capacitor C1. The currents I1 and I2 of the capacitor C2 are sent to the control unit 2220, and the ratio of the two is used to calculate the sensing value through the control unit 20, so as to determine the pressure change. The control unit 2220 can implement the method shown in FIG. 8. In an application, the driving signal of the predetermined frequency may also be inputted from the outside to an input terminal c of the pressure sensor 2220.

Please refer to FIGS. 23A and 23B, which are schematic structural diagrams of a simple switch according to an embodiment of the present invention. In the embodiment shown in FIG. 23A, there are three layers of circuit boards in total. As in the previous illustration, there is a mechanical slope on the right. Before the mechanical slope is pushed to the left, the circuit on the upper circuit board is connected to the circuit on the lower circuit board through the conductive circuit of the middle circuit board. A first contact p1 of the upper circuit board is respectively connected to a voltage source (such as Vdd) and a first connection port (GPIO1). When there is no displacement perpendicular to the axis of the stylus, the first contact p1 It is in electrical contact with a second contact point p2 of the intermediate circuit board. The intermediate circuit board additionally has a third contact point p3, and the second contact point p2 is electrically connected to the third contact point p3. A fourth contact p4 of the lower circuit board is connected to a ground potential (such as ground), or it can be connected to a second connection port (GPIO2). In addition, the fourth contact p4 is in electrical contact with the third contact p3. A boost resistor is connected between the voltage source and the first port GPIO1, when the circuit of the upper circuit board and the middle circuit board is short-circuited (the first contact p1 is in electrical contact with the second contact p2), and the middle circuit board and the lower circuit When the circuit of the board is short-circuited (the third contact p3 is in electrical contact with the fourth contact p4), the potential of the first port GPIO1 is a low potential or a ground potential.

Please refer to FIG. 23B. After receiving the pressure, the mechanical inclined surface will push to the left, which will deform the contact end of the upper circuit board and the lower circuit board. After the deformation, the circuit between the upper circuit board and the middle circuit board is open (the first contact p1 and the second contact p2 are not in electrical contact), or the circuit between the middle circuit board and the lower circuit board is open (the third contact p3 is not in electrical contact with the fourth contact p4), the potential of the first port GPIO1 is the potential of the voltage source Vdd.

When the potential of the first port GPIO1 changes from low to high, the transmitter 110 in the sleep mode can be awakened. As mentioned earlier, supporting components can be attached to the upper circuit board and the lower circuit board, so that after the force of the mechanical slope disappears, the upper circuit board and the lower circuit board are restored to their original state, and the potential of the first connection port is changed from high to high. low. The aforementioned first port and second connection The port may be a pin of the processor in the transmitter 110.

Please refer to FIGS. 24A and 24B, which are schematic structural diagrams of a simple switch according to an embodiment of the present invention. The embodiments of FIGS. 23A and 23B have two fractures, no matter which one of the fractures presents an open circuit, the potential of the first connection port can be changed from low to high. The embodiment of Figures 24A and 24B has only one break, and the circuit is connected from the intermediate circuit board to the ground potential. When the circuits of the upper circuit board and the middle circuit board are short-circuited, the potential of the first connection port GPIO1 is a low potential or a ground potential. When the circuits of the upper circuit board and the middle circuit board are open, the potential of the first connection port GPIO1 is the potential of the voltage source. In FIGS. 24A and 24B, the second contact p2 is electrically connected to the second port GPIO2.

Please refer to FIG. 25. The present invention provides a schematic diagram for inferring the position of the pen tip. In the figure, there are two transmitters 110, both of which include a ring electrode 550 and a pen tip section 230. The sender 110 on the left and the touch panel 120 are in a vertical state, and the included angle is close to or equal to 90 degrees, and the included angle between the sender 110 on the right and the touch panel 120 is less than 90 degrees. The surface transparent layer of the touch panel 120 has a thickness. Generally speaking, the surface transparent layer is usually a strengthened glass, and the display layer is located under the transparent layer.

Since the transmitter 110 sends out electrical signals from the ring electrode 550 and/or the pen tip section 230 in the R period, the touch processing device 130 can calculate the center of gravity position R_cg of the signal, which corresponds to the ring electrode 550 and the pen tip section 230 being projected on The center position of the touch panel 120. Then, during the T0 and T1 periods, the transmitter 110 only sends out electrical signals through the pen tip section 230. The touch processing device 130 can calculate the center of gravity of the signal Tip_cg, which corresponds to the center position of the pen tip segment 230 projected on the touch panel 120.

The transmitter 110 on the left side of FIG. 25, when it is perpendicular to the touch panel 120, R_cg is equal to or very close to Tip_cg. Therefore, it can be inferred that the point where the tip of the pen touches the transparent layer of the surface of the touch panel 120, Tip_surface is equal to the aforementioned R_cg and Tip_cg. It can also be inferred that the pen tip is projected on The points of the display layer of the touch panel 120, Tip_display are equal to the above-mentioned R_cg, Tip_cg, and Tip_surface.

The transmitter 110 on the right in FIG. 25 has an inclination angle with the touch panel 120, so R_cg is not equal to Tip_cg. It is conceivable that the farther the distance between the two is, the greater the inclination angle. According to different design of the transmitter 110, the touch processing device 130 can look up the table or calculate the above-mentioned inclination according to the above-mentioned two center of gravity positions R_cg and Tip_cg, or calculate that the tip of the pen tip section 230 contacts the surface of the touch panel 120 The points Tip_surface and Tip_display of the transparent layer and the display layer.

Please refer to FIG. 26, which is a schematic diagram of calculating a tilt angle according to an embodiment of the present invention. This embodiment is applicable to the transmitter 110 shown in FIG. 5, which has a ring electrode 550. This embodiment is applicable to the signal modulation modes shown in FIG. 9E and FIG. 9F. The touch processing device 130 shown in FIG. 1 executes the method shown in this embodiment, and the embodiment in FIG. 25 can also be referred to.

In step 2610, a first center position R_cg of the ring electrode 550 and/or the pen tip segment 230 on the touch panel 120 is calculated. In step 2620, a second center position Tip_cg of the pen tip segment 230 on the touch panel 120 is calculated. The present invention does not limit the sequence of execution of the two steps 2610 and 2620. Then, in optional step 2630, a tilt angle is calculated according to the first center position R_cg and the second center position Tip_cg. In an optional step 2640, according to the first center position R_cg and the second center position Tip_cg, the surface position Tip_surface of the pen tip section 230 on the surface layer of the touch panel 120 is calculated. In the optional step 2650, the display position Tip_display of the pen tip segment 230 on the display layer of the touch panel 120 is calculated according to the first center position R_cg and the second center position Tip_cg. The present invention does not limit that steps 2630 to 2650 must be performed, but at least one of them must be performed. The present invention also does not limit the order in which steps 2630 to 2650 are performed.

Please refer to Figure 27, which shows that the interface reflects the aforementioned tilt angle and/or pressure The example of the brush strokes. Figure 27 contains five groups of horizontal rows of examples (a) to (e), each group contains three inclination angles (inclination), the leftmost straight row represents the case where the active pen has no inclination angle, the second inclination in the right example The angle is greater than the first inclination angle of the middle example, and the directions of the inclination angles are all toward the right. The so-called brush strokes are usually displayed in the coloring range of the screen in the drawing software.

It is worth noting that in this embodiment, it is not necessary to use the ring electrodes of FIGS. 25 and 26 to calculate the inclination angle and the point Tip_surface and Tip_display at which the tip of the pen tip segment 230 contacts the transparent layer and the display layer of the touch panel 120. In one embodiment, other sensors can be installed on the pen to measure the inclination angle. For example, the inertial measurement unit (IMU), gyroscope, accelerometer, etc., made of micro-electromechanical devices, after measuring the inclination angle, use various wired or wireless transmission methods to transfer the inertial measurement unit (IMU), gyroscope, and accelerometer. Various data derived from the inclination angle and/or the inclination angle are transmitted to the computer system to which the touch panel belongs, so that the computer system can implement the various embodiments shown in FIG. 10. The above-mentioned wired or wireless transmission method may be an industry standard or a customized standard, for example, the Bluetooth wireless communication protocol or Wireless USB.

It is assumed here that in FIG. 27, the active pens of the various embodiments all touch the touch panel with the same pressure. In an embodiment, the intersection of each horizontal line and the straight line represents the point Tip_surface where the pen tip section actually contacts the transparent layer of the surface of the touch panel. In another embodiment, the intersection of each horizontal line and the straight line represents the position of the center of gravity of the pen tip signal Tip_cg. Of course, in other embodiments, it can also represent the point Tip_display where the pen tip is projected on the display layer of the touch panel. For the sake of convenience, they can be collectively referred to as the tip representative point of the pen tip, and the representative point of the pen tip may be the aforementioned Tip_display, Tip_surface, or Tip_cg.

In the embodiment (a), when the tilt angle increases, the shape of the stroke changes from a circle to an ellipse. In other words, the distance between the bifocals of the ellipse is related to the tilt angle. The greater the angle of inclination, Then the distance between the bifocals of the ellipse is greater. The center point of the ellipse is the above-mentioned representative point of the pen tip, Tip.

The difference between the embodiment (b) and the embodiment (a) is that the intersection point of the central extension line of the elliptical bifocal and the elliptical line is the aforementioned tip representative point. The difference between the embodiment (c) and the embodiment (a) is that one of the focal points of the elliptical bifocal is the above-mentioned representative point of the pen tip, Tip. Embodiments (d) and (e) are different from embodiment (a) in that the shape of the stroke is changed from an oval shape to a teardrop shape. The teardrop-shaped tip of the embodiment (d) is the above-mentioned representative point Tip of the pen tip. The point where the teardrop-shaped tip of the embodiment (e) faces the tail end is the above-mentioned representative point of the pen tip, Tip.

Although in FIG. 27, two different shapes and the indicated points are listed, the present application does not limit the shape of the brush stroke and the type of points it represents. In addition, in one embodiment, the pressure of the pen tip can control the size of the above-mentioned shape. For example, the pressure is related to the radius of a circle or the distance of the bifocal of an ellipse. All in all, the man-machine interface can change the displayed content according to the pen tip pressure value and/or inclination angle of the active pen.

In addition to changing the shape of the stroke, the aforementioned pen tip pressure value and/or tilt angle value may also indicate different commands. For example, in 3D design software, you can adjust the color temperature of the light source, or the intensity of the light source, or the width of the light source through the tilt angle. Or when an object is selected by the pen tip, the direction of the object can be adjusted through the direction of the tilt angle, and the rotation direction of the object can also be adjusted according to the angle of the tilt angle.

It should be noted that the present invention does not limit the relationship between the tilt angle and its related value to be linear. In some embodiments, the relationship between the tilt angle and its related value may be non-linear, and a look-up table may be used for comparison, or a quadratic function may be used for comparison.

Please refer to Figure 28, which reflects the aforementioned inclination and/or pressure on the display interface Another embodiment of the brush strokes. Fig. 28 includes two embodiments (a) and (b), and each embodiment includes two strokes on the left and right. The inclination angle of the stroke on the left is zero and contains five small to large circles C1 to C5. The size of the circle is determined by the pressure value of the pen tip. The stroke on the right has a fixed angle of inclination, including five small to large ellipses E1 to E5. The size of the ellipses is also determined by the pressure value of the pen tip, and is the same as the pressure value of C1 to C5. In addition, according to the direction of the inclination angle, the axis directions of these ellipses E1 to E5 are all inclined by 30 degrees, and the direction of the inclination angle (inclination direction) and the direction of the center of the stroke (stroke direction) are different . In this picture, the two have an angle of 15 degrees.

The embodiment (a) of FIG. 28 corresponds to the embodiment (a) of FIG. 27, which means that the center point of the ellipse corresponds to the aforementioned pen point representative point Tip. Similarly, the embodiment (b) of FIG. 28 corresponds to the embodiment (b) of FIG. 27, and the intersection point of the central extension line of the elliptical bifocal and the elliptical line is the aforementioned tip representative point Tip. It can be seen from the two embodiments in FIG. 28 that under the same pressure change, the overall shape of the stroke will be different due to the difference in the inclination angle. In this way, the pressure value and the inclination angle can be used to express the strokes of some soft elastic nibs, such as brush pens or quill pens.

One of the characteristics of the present invention is to provide a transmitter. The transmitter includes: a first element for receiving a signal with a first frequency group, wherein a first impedance value of the first element changes according to a force; a second element for receiving A signal with a second frequency group, the second element having a second impedance value; and a tip segment for receiving the input of the first element and the second element, and sending out an electrical signal, wherein the pen tip The segment is used to receive the force.

In an embodiment, the second impedance value does not change according to the force. In another In an embodiment, the second impedance value also changes according to the force.

In an embodiment, the above-mentioned transmitter may further include a third element connected in series with a third switch and the third switch, wherein the first element is connected in parallel with the third switch and the third element. The above-mentioned transmitter may further include a fourth element connected in series with a fourth switch and the fourth switch, wherein the first element is connected in parallel with the fourth switch and the fourth element.

In another embodiment, the above-mentioned transmitter may further include a third element connected in series with a third switch and the third switch, wherein the second element is connected in parallel with the third switch and the third element. The above-mentioned transmitter may further include a fourth element connected in series with a fourth switch and the fourth switch, wherein the second element is connected in parallel with the fourth switch and the fourth element.

In an embodiment, the aforementioned first frequency group includes one or more first frequencies, and the second frequency group includes one or more second frequencies, and the first frequency is different from the second frequency.

In one embodiment, when the force is zero, the first impedance value is equal to the second impedance value. In one embodiment, when the force is zero, the pen tip section does not touch any object.

In an embodiment, a ratio of a first signal strength M1 of the first frequency group to a second signal strength M2 of the second frequency group in the electrical signal is related to the force. Wherein, the ratio value can be one of the following: M1/M2, M2/M1, M1/(M1+M2), M2/(M1+M2), (M1-M2)/(M1+M2), or ( M2-M1)/(M1+M2).

In one embodiment, when the ratio value is equal to or falls within a first range value, the force is zero. When the ratio value is equal to or falls within a second range value, the third switch is closed, and the first element and the third element are connected in parallel. When the ratio value is equal to or falls within a third range value At this time, the fourth switch is closed, and the first element and the fourth element are connected in parallel. When the ratio value is equal to or falls within a fourth range value, the third switch and the fourth switch are closed, and the first element is connected in parallel with the third element and the fourth switch. In another embodiment, when the ratio value is equal to or falls within a fifth range value, the third switch is closed, and the second element and the third element are connected in parallel. When the ratio value is equal to or falls within a sixth range value, the fourth switch is closed, and the second element and the fourth element are connected in parallel. When the ratio value is equal to or falls within a seventh range value, the third switch and the fourth switch are closed, and the second element is connected in parallel with the third element and the fourth element.

In one embodiment, the first element is a force sensing capacitor, and the second element is a capacitor.

In one embodiment, the above-mentioned transmitter may further include a ring electrode surrounding the pen tip section, and the ring electrode is not electrically coupled with the pen tip section. In an embodiment, the above-mentioned ring-shaped electrode may include one or more separate electrodes.

One of the characteristics of the present invention is to provide a method for controlling a transmitter. The transmitter includes a first element, a second element, and a pen tip segment, wherein the pen tip segment is used to receive the first element With the input of the second element, the sending method includes: making a first impedance value of the first element change according to a force received by the pen tip section; providing a signal of a first frequency group to the first An element; providing a signal of a second frequency group to the second element; and causing the pen tip section to emit an electrical signal.

One of the features of the present invention is to provide a judging method for judging a force received by a transmitter, including: receiving an electrical signal sent by the transmitter; calculating a first frequency group in the electrical signal Group a first signal strength M1; calculate a second signal strength M2 of a second frequency group in the electrical signal; and according to the first signal strength M1 and the second signal strength A proportional value of the degree M2 to calculate the force.

In an embodiment, the step of calculating the force may include one of the following: a look-up table method, a linear interpolation method, or a quadratic curve method.

In an embodiment, it further includes judging the state of the third switch according to the ratio value. In another embodiment, it further includes judging the state of the fourth switch according to the ratio value.

One of the characteristics of the present invention is to provide a touch processing device for determining a force received by a transmitter, comprising: an interface for connecting to a plurality of first electrodes and a plurality of first electrodes on a touch panel Second electrodes, wherein the plurality of first electrodes and the plurality of second electrodes form a plurality of sensing points; at least one demodulator is used to calculate a signal received by one of the plurality of sensing points Among the electrical signals, a first signal strength M1 of a first frequency group and a second signal strength M2 of a second frequency group; and a calculation unit for calculating the first signal strength M1 and the second signal strength M1 A proportional value of the signal strength M2 to calculate the force.

In an embodiment, the calculation unit further determines the state of the third switch according to the ratio value. In another embodiment, the calculation unit further determines the state of the fourth switch according to the ratio value.

One of the characteristics of the present invention is to provide a touch system for judging a force received by a sender, including: a sender, a touch panel, and a touch processing device, wherein the sender The device further includes a first element for receiving a signal with a first frequency group, wherein a first impedance value of the first element changes according to a force; a second element for receiving a signal with a first frequency group A signal of two frequency groups, in which the second element has a second impedance value; and a pen tip section for receiving the input of the first element and the second element and sending out an electrical signal, wherein the pen tip section is used After receiving the force, the touch panel includes a plurality of first electrodes and a plurality of The second electrode, wherein the plurality of first electrodes and the plurality of second electrodes form a plurality of sensing points, the touch processing device further includes: an interface for connecting to the plurality of first electrodes on the touch panel The electrode and the plurality of second electrodes, and at least one demodulator is used to calculate a first signal strength M1 of a first frequency group among an electrical signal received by one of the plurality of sensing points And a second signal strength M2 of a second frequency group; and a calculation unit for calculating the force based on a ratio of the first signal strength M1 to the second signal strength M2.

One of the characteristics of the present invention is to provide a transmitter, including: a first element for receiving a signal source, wherein a first impedance value of the first element changes according to a force; a second element , For receiving the signal source, wherein the second element has a second impedance value; a tip section for receiving the force; a control unit for calculating the transmission of the first element and the second element respectively Return a first current value I1 and a second current value I2, and calculate the force according to a ratio of the first current value I1 and a second current value I2; and a communication unit for the The force value is transmitted.

In an embodiment, the second impedance value does not change according to the force. In another embodiment, the second impedance value also changes according to the force.

In one embodiment, the communication unit further includes a wireless communication unit for transmitting the force value. In another embodiment, the communication unit further includes a wired communication unit for transmitting the force value.

In one embodiment, the signal source is the wired communication unit. In one embodiment, the signal source is a signal received by the pen tip section.

In an embodiment, the ratio of the first current value I1 to the second current value I2 is related to the force. Among them, the ratio value can be one of the following: I1/I2, I2/I1, I1(I1+I2), I2/(I1+I2), (I1-I2)/(I1+I2), or (I2-I1)/(I1+I2).

In one embodiment, when the force is zero, the first impedance value is equal to the second impedance value.

In an embodiment, the above-mentioned transmitter may further include a third element connected in series with a third switch and the third switch, wherein the first element is connected in parallel with the third switch and the third element. The above-mentioned transmitter may further include a fourth element connected in series with a fourth switch and the fourth switch, wherein the first element is connected in parallel with the fourth switch and the fourth element. In one embodiment, when the ratio value is equal to or falls within a first range value, the force is zero. When the ratio value is equal to or falls within a second range value, the third switch is closed, and the first element and the third element are connected in parallel. When the ratio value is equal to or falls within a third range value, the fourth switch is closed, and the first element and the fourth element are connected in parallel. When the ratio value is equal to or falls within a fourth range value, the third switch and the fourth switch are closed, and the first element is connected in parallel with the third element and the fourth switch.

In another embodiment, the above-mentioned transmitter may further include a third element connected in series with a third switch and the third switch, wherein the second element is connected in parallel with the third switch and the third element. The above-mentioned transmitter may further include a fourth element connected in series with a fourth switch and the fourth switch, wherein the second element is connected in parallel with the fourth switch and the fourth element. When the ratio value is equal to or falls within a fifth range value, the third switch is closed, and the second element and the third element are connected in parallel. When the ratio value is equal to or falls within a sixth range value, the fourth switch is closed, and the second element and the fourth element are connected in parallel. When the ratio value is equal to or falls within a seventh range value, the third switch and the fourth switch are closed, and the second element is connected in parallel with the third element and the fourth switch.

In an embodiment, the control unit further determines the state of the third switch according to the ratio value. In another embodiment, the control unit further determines the fourth opening according to the ratio value. Off state.

In an embodiment, the communication unit is further used to transmit the state of the third switch. In another embodiment, the communication unit is further used to transmit the state of the fourth switch.

One of the characteristics of the present invention is to provide a method for controlling a transmitter. The transmitter includes a first element, a second element, and a tip, and the method for transmitting includes: making the first element A first impedance value changes according to a force received by the pen tip section; provides a signal source to the first element and the second element; respectively calculates a return from the first element and the second element A first current value I1 and a second current value I2; calculating the force according to a ratio of the first current value I1 and a second current value I2; and transmitting the force value.

One of the characteristics of the present invention is to provide a touch system for determining a force received by a transmitter, comprising: a transmitter; and a host, wherein the transmitter further includes: a first element , For receiving a signal source, wherein a first impedance value of the first element changes according to a force; a second element for receiving the signal source, wherein the second element has a second impedance value; A tip of a stroke is used to receive the force; a control unit is used to calculate a first current value I1 and a second current value I2 returned by the first element and the second element, and according to the first element A ratio value of a current value I1 and a second current value I2 is calculated to calculate the force; and a communication unit for transmitting the force value to the host, and the host further includes a host communication unit to receive the force value.

In one embodiment, the touch system further includes a touch panel and a touch processing device, wherein the touch processing device is used to connect to the touch panel for detecting the transmitter and the touch panel And send the relative position to the host.

In an embodiment, the control unit further determines the third opening according to the ratio value. Off state. In another embodiment, the control unit further determines the state of the fourth switch according to the ratio value. In an embodiment, the communication unit is used to transmit the state of the third switch. In another embodiment, the communication unit is further used to transmit the state of the fourth switch. In an embodiment, the host communication unit is used to receive the state of the third switch. In another embodiment, the host communication unit is used to receive the state of the fourth switch.

One of the characteristics of the present invention is to provide a force sensor, including: a first input terminal for receiving a signal with a first frequency group; a second input terminal for receiving a signal with a second frequency group Group of signals; and an output terminal for sending out an electrical signal, wherein a first signal strength M1 of the first frequency group and a second signal strength M2 of the second frequency group in the electrical signal The proportional value is related to a force.

In an embodiment, the ratio value can be one of the following: M1/M2, M2/M1, M1(M1+M2), M2/(M1+M2), (M1-M2)/(M1+M2) , Or (M2-M1)/(M1+M2).

In one embodiment, the force sensor further includes a third switch. In one embodiment, when the ratio value is equal to or falls within a first range value, the force is zero. When the ratio value is equal to or falls within a second range value, the third switch is closed.

In another embodiment, the force sensor further includes a fourth switch. When the ratio value is equal to or falls within a third range value, the fourth switch is closed. When the ratio value is equal to or falls within a fourth range value, the third switch and the fourth switch are closed.

One of the features of the present invention is to provide a force sensor, including: an input terminal for receiving a signal source; a first output terminal for outputting a signal with a first current value I1; and a first Two output terminals for outputting a signal with a second current value I2, where the first A ratio of the current value I1 to the second current value I2 is related to a force.

In an embodiment, the ratio value can be one of the following: I1/I2, I2/I1, I1(I1+I2), I2/(I1+I2), (I1-I2)/(I1+I2) , Or (I2-I1)/(I1+I2).

In one embodiment, the force sensor further includes a third switch. In one embodiment, when the ratio value is equal to or falls within a first range value, the force is zero. When the ratio value is equal to or falls within a second range value, the third switch is closed.

In another embodiment, the force sensor further includes a fourth switch. When the ratio value is equal to or falls within a third range value, the fourth switch is closed. When the ratio value is equal to or falls within a fourth range value, the third switch and the fourth switch are closed.

One of the characteristics of the present invention is to provide a force sensor, including: a first circuit board, including a first metal plate, for receiving a signal of a first frequency group; a second circuit board, and the The first circuit board is parallel and includes a second metal plate and a third metal plate that are not in contact with each other. The third metal plate is used to receive a signal of a second frequency group, and the second metal plate is used to output an electrical signal. Signal, wherein the second metal plate is located between the first metal plate and the third metal plate; and a slope mechanism for bending the first circuit board upwards of the first circuit board.

One of the characteristics of the present invention is to provide a force sensor, including: a first circuit board, including a first metal plate for outputting a signal with a first current value; a second circuit board, and the The first circuit board is parallel and includes a second metal plate and a third metal plate that are not in contact with each other. The third metal plate is used for outputting a signal with a second current value, and the second metal plate is used for inputting a signal. Source, wherein the second metal plate is located between the first metal plate and the third metal plate; and a slope mechanism for bending the first circuit board upwards of the first circuit board.

In an embodiment, a portion of the first metal plate is located on the first circuit board and is bent Fold the place.

In one embodiment, the force sensor further includes a supporting element for supporting the first circuit board.

In an embodiment, the first metal plate, the second metal plate, and the third metal plate are parallel to each other. In another embodiment, the distance between the first metal plate and the second metal plate is equal to the distance between the second metal plate and the third metal plate.

In one embodiment, the first metal plate and the second metal plate form a first capacitor, and the second metal plate and the third metal plate form a second capacitor. In another embodiment, when the first circuit board is not bent, the impedance values of the first capacitor and the second capacitor are the same.

In an embodiment, both the first circuit board and the second circuit board are printed circuit boards.

One of the characteristics of the present invention is to provide a force sensor, including: a first circuit board, including a first metal plate and a third metal plate that are not in contact with each other, each for receiving a first frequency group Signal and a signal of a second frequency group; a second circuit board, parallel to the first circuit board, including a second metal plate for outputting an electrical signal; and a slope mechanism for directing the first The first circuit board is bent above a circuit board.

One of the characteristics of the present invention is to provide a force sensor, including: a first circuit board, including a first metal plate and a third metal plate that are not in contact with each other, each for outputting a first current value And a signal with a second current value; a second circuit board, parallel to the first circuit board, including a second metal plate for inputting a signal source; and a slope mechanism for directing the signal to the first circuit board Bend the first circuit board at the top.

In one embodiment, the force sensor further includes a supporting element for supporting the The first circuit board.

In one embodiment, the first metal plate and the second metal plate are parallel to each other, and the second metal plate and the third metal plate are parallel to each other. In another embodiment, the distance between the first metal plate and the second metal plate is equal to the distance between the second metal plate and the third metal plate.

In one embodiment, the first metal plate and the second metal plate form a first capacitor, and the second metal plate and the third metal plate form a second capacitor. In another embodiment, when the first circuit board is not bent, the impedance values of the first capacitor and the second capacitor are the same.

In an embodiment, both the first circuit board and the second circuit board are printed circuit boards.

One of the characteristics of the present invention is to provide a force sensor, including: a first circuit board, including a first metal plate and a third metal plate that are not in contact with each other, each for receiving a first frequency group Signal and a signal of a second frequency group; a second circuit board, parallel to the first circuit board, including a second metal plate for outputting an electrical signal; a third circuit board, and the second The circuit board is parallel and includes a fourth metal plate and a fifth metal plate that are not in contact with each other, and are used to receive signals of the first frequency group and the second frequency group respectively; and a slope mechanism for The first circuit board is bent above the first circuit board, and the third circuit board is bent below the third circuit board.

In one embodiment, the force sensor further includes a first supporting element for supporting the first circuit board. In another embodiment, the force sensor further includes a second supporting element for supporting the third circuit board.

In one embodiment, the first metal plate and the second metal plate are parallel to each other, the second metal plate and the third metal plate are parallel to each other, and the fourth metal plate and the second metal plate are parallel to each other. Parallel, the second metal plate and the fifth metal plate are parallel to each other. In another embodiment, the distance between the first metal plate and the second metal plate is equal to the distance between the second metal plate and the third metal plate, and the distance between the fourth metal plate and the second metal plate is equal to the distance between the fourth metal plate and the second metal plate. The distance between the second metal plate and the fifth metal plate.

In one embodiment, the first metal plate is located above the fourth metal plate. In another embodiment, the position of the third metal plate is above the fifth metal plate.

In an embodiment, the area of the first metal plate is equal to the area of the fourth metal plate. In another embodiment, the area of the third metal plate is equal to the area of the fifth metal plate.

In one embodiment, the first metal plate and the second metal plate form a first capacitor, the second metal plate and the third metal plate form a second capacitor, and the fourth metal plate and the second metal plate form a second capacitor. The plate forms a third capacitor, and the second metal plate and the fifth metal plate form a fourth capacitor. In another embodiment, when the first circuit board is not bent, the impedance values of the first capacitor and the second capacitor are the same. In another embodiment, when the third circuit board is not bent, the impedance of the third capacitor and the fourth capacitor are the same. In a further embodiment, the impedance value of the first capacitor and the third capacitor are the same, and the impedance value of the second capacitor and the fourth capacitor are the same.

In an embodiment, the first circuit board, the second circuit board, and the third circuit board are all printed circuit boards.

One of the characteristics of the present invention is to provide a force sensor, including: a first circuit board, including a first metal plate, for receiving a signal of a first frequency group; a second circuit board, and the The first circuit board is parallel and includes a second metal plate, a third metal plate, a fourth metal plate, and a fifth metal plate that are not in contact with each other and are arranged in parallel in sequence, the third metal plate and the fourth metal plate The metal plate is used to receive a signal of a second frequency group, and the second metal plate and the fifth metal The boards are electrically coupled to each other and are used to output an electrical signal; a third circuit board includes a sixth metal plate for receiving signals of the first frequency group, wherein the second circuit board is sandwiched between the first Between the circuit board and the third circuit board; and a slope mechanism for bending the first circuit board upwards of the first circuit board, and bending the third circuit board downwards of the third circuit board .

In one embodiment, the force sensor further includes a first supporting element for supporting the first circuit board. In another embodiment, the force sensor further includes a second supporting element for supporting the third circuit board.

In one embodiment, the first metal plate and the second metal plate are parallel to each other, the second metal plate and the third metal plate are parallel to each other, the fourth metal plate and the fifth metal plate are parallel to each other, and the first metal plate is parallel to each other. The fifth metal plate and the sixth metal plate are parallel to each other. In another embodiment, the distance between the first metal plate and the second metal plate is equal to the distance between the second metal plate and the third metal plate, and the distance between the fourth metal plate and the fifth metal plate is equal to the distance between the fourth metal plate and the fifth metal plate. The distance between the fifth metal plate and the sixth metal plate.

In an embodiment, the first metal plate is located above the sixth metal plate.

In an embodiment, the area of the first metal plate is equal to the area of the sixth metal plate. In another embodiment, the area of the second metal plate is equal to the area of the fifth metal plate. In another embodiment, the area of the third metal plate is equal to the area of the fourth metal plate.

In one embodiment, the first metal plate and the second metal plate form a first capacitor, the second metal plate and the third metal plate form a second capacitor, and the fourth metal plate and the fifth metal plate form a second capacitor. The plate forms a third capacitor, and the fifth metal plate and the sixth metal plate form a fourth capacitor. In another embodiment, when the first circuit board is not bent, the impedance values of the first capacitor and the second capacitor are the same. In another embodiment, the third circuit board is not bent In this case, the impedance value of the third capacitor and the fourth capacitor are the same. In a further embodiment, the impedance value of the first capacitor and the fourth capacitor are the same, and the impedance value of the second capacitor and the third capacitor are the same.

In an embodiment, the first circuit board, the second circuit board, and the third circuit board are all printed circuit boards.

One of the characteristics of the present invention is to provide a force sensor comprising: a first metal plate, a second metal plate, and a third metal plate that are not in contact with each other and are arranged in parallel in sequence, wherein the first metal The plate is used to receive a signal of a first frequency group, the third metal plate is used to receive a signal of a second frequency group, the second metal plate is used to output an electrical signal, and one end of the second metal plate Can be bent under force.

One of the characteristics of the present invention is to provide a force sensor comprising: a first metal plate, a second metal plate, and a third metal plate that are not in contact with each other and are arranged in parallel in sequence, wherein the first metal The plate is used to output a signal having a first current value, the third metal plate is used to output a signal having a second current value, the second metal plate is used to input a signal source, and one end of the second metal plate Can be bent under force.

In an embodiment, the distance between the first metal plate and the second metal plate is equal to the distance between the second metal plate and the third metal plate.

In one embodiment, the first metal plate and the second metal plate form a first capacitor, and the second metal plate and the third metal plate form a second capacitor. In another embodiment, when the second metal plate is not bent, the impedance of the first capacitor and the second capacitor are the same.

One of the characteristics of the present invention is to provide a force sensor, comprising: a first metal plate, a second metal plate, and a third metal plate that are not in contact with each other and are arranged in parallel in sequence. The first metal plate is used to output an electrical signal, the second metal plate is used to receive a signal of a first frequency group, and the third metal plate is used to receive a signal of a second frequency group. One end of a metal plate can be bent under force.

One of the characteristics of the present invention is to provide a force sensor comprising: a first metal plate, a second metal plate, and a third metal plate that are not in contact with each other and are arranged in parallel in sequence, wherein the first metal The plate is used to input a signal source, the second metal plate is used to output a signal having a first current value, the third metal plate is used to output a signal having a second current value, and one end of the first metal plate Can be bent under force.

In an embodiment, the distance between the first metal plate and the second metal plate is equal to the distance between the second metal plate and the third metal plate.

In one embodiment, the first metal plate and the second metal plate form a first capacitor, and the second metal plate and the third metal plate form a second capacitor. In another embodiment, when the first metal plate is not bent, the impedance values of the first capacitor and the second capacitor are the same.

One of the characteristics of the present invention is to provide a transmitter, including: a movable element for moving along the axis of the transmitter for a stroke; an insulating material for the rear end of the movable element; And a conductor, located at the rear end of the insulating material, is used to form a force sensing capacitor with the movable element and the insulating material.

In one embodiment, the transmitter further includes a pen tip section located at the front end of the movable element. In one embodiment, the pen tip section is a conductor, which is electrically coupled with the movable element. In another embodiment, the pen tip segment is used to send out an electrical signal, and the signal strength of a certain frequency group in the electrical signal is related to the impedance value of the force sensing capacitor.

In one embodiment, the transmitter further includes an elastic element and a housing, and the elastic The sex element is used to provide elastic force between the movable element and the housing, so that when the movable element receives the elastic force, it moves to the front end of the stroke.

In one embodiment, the insulating material is an insulating film, and the conductor includes a compressible conductor and a conductor base. In another embodiment, the insulating substance is a compressible insulating material.

In one embodiment, the contact surface between the insulating substance and the conductor includes one of the following: a single inclined surface, a plurality of protruding surfaces, a conical inclined surface, and a single protruding surface. In another embodiment, the contact surface between the conductor and the insulating substance includes one of the following: a single inclined surface, a plurality of protruding surfaces, a conical inclined surface, and a single protruding surface.

In one embodiment, the insulating substance and the conductor are located in an inner cavity of the housing. In another embodiment, the inner cavity is cylindrical.

In one embodiment, the movable element includes a front movable element and a rear movable element, wherein the front movable element is in contact with the pen tip section and is electrically coupled.

In one embodiment, the transmitter further includes a circuit board, wherein the circuit board is electrically coupled with the conductor through a base wire, and the circuit board is electrically coupled with the movable element through a movable element wire. In another embodiment, the movable element is wire connected to the elastic element.

In an embodiment, the elastic element does not surround the movable element. In another embodiment, the base wire does not surround the conductor.

One of the characteristics of the present invention is to provide a circuit switch, which includes a first circuit board, a second circuit board, and a third circuit board arranged in parallel with each other; and a double inclined device, wherein the first circuit board A first end of the circuit board and a first end of the third circuit board respectively abut the two inclined surfaces of the double-slope device, and a first end of the second circuit board is not in contact with the double-slope device, the The first end of the second circuit board includes a circuit, and a second point above and below the circuit A first point of the first circuit board and a fourth point of the third circuit board are short-circuited and electrically coupled with a third point.

In one embodiment, when the double-inclined device moves toward the second circuit board, the first circuit board and the third circuit board are pressed by the double-inclined device to bend upward and downward respectively, so that the second One point is open to the second point and electrically uncoupled, and the third point is open to the fourth point and electrically uncoupled.

In one embodiment, the first point is connected in parallel to a first connection port and a high potential, and the fourth point is connected to a low potential. When the first point and the second point are short-circuited and the third point and the fourth point are short-circuited , The first connection port is at a low potential, and when the first point and the second point are open or the third and fourth points are open, the first connection port is at a high potential.

In one embodiment, the double bevel device is connected to a tip section of a transmitter.

In an embodiment, the circuit is located on the first end edge of the second circuit board.

One of the features of the present invention is to provide a circuit switch, which includes a first circuit board, a second circuit board, and a third circuit board arranged in parallel with each other; and a double slope device, wherein the first circuit board A first end of the circuit board and a first end of the third circuit board respectively abut the two inclined surfaces of the double-slope device, and a first end of the second circuit board is not in contact with the double-slope device, the The first end of the second circuit board includes a circuit, and a second point on the circuit is short-circuited and electrically coupled with a first point on the first circuit board.

In one embodiment, when the double-inclined device moves toward the second circuit board, the first circuit board and the third circuit board are pressed by the double-inclined device to bend upward and downward respectively, so that the second One point is open to the second point and is not electrically coupled.

In one embodiment, the first point is connected in parallel to a first connection port and a high potential, the The second point is connected to a low potential. When the first point and the second point are short-circuited, the first connection port is at a low potential, and when the first point and the second point are open, the first connection port is at a high potential .

In one embodiment, the double bevel device is connected to a tip section of a transmitter.

In an embodiment, the circuit is located on the first end edge of the second circuit board.

One of the features of the present invention is to provide a stylus, including: a control unit, a pen tip, and a circuit switch, the circuit switch includes a first circuit board and a second circuit arranged in parallel with each other Board, and a third circuit board; and a double bevel device connected to the pen tip section, wherein a first end of the first circuit board and a first end of the third circuit board respectively abut the double bevel device The first end of the second circuit board is not in contact with the double-inclined device, the first end of the second circuit board contains a circuit, a second point above and below the circuit and a first The three points are respectively short-circuited and electrically coupled with a first point of the first circuit board and a fourth point of the third circuit board, and the first point is connected in parallel to a first connection port and a high potential of the control unit, The fourth point is connected to a low potential, and the first connection port is a low potential.

In one embodiment, when the double-inclined device moves toward the second circuit board, the first circuit board and the third circuit board are pressed by the double-inclined device to bend upward and downward respectively, so that the second One point and the second point are open and electrically uncoupled, and the third point and the fourth point are open and electrically uncoupled, and the first connection port is at a high potential.

In one embodiment, when the first connection port changes from a low potential to a high potential, the control unit is awakened.

One of the features of the present invention is to provide a stylus, including: a control unit, a tip section, and a circuit switch, the circuit switch includes a first circuit board and a second circuit arranged in parallel with each other Board, and a third circuit board; and a pen tip section connected A double-slope device, wherein a first end of the first circuit board and a first end of the third circuit board respectively abut the two slopes of the double-slope device, and a first end of the second circuit board is not In contact with the double-slope device, the first end of the second second circuit board includes a circuit, a second point of the circuit is short-circuited and electrically coupled with a first point of the first circuit board, and the first point A first connection port and a high potential connected in parallel to the control unit, the second point is connected to a low potential, and the first connection port is a low potential.

In one embodiment, when the double-inclined device moves toward the second circuit board, the first circuit board and the third circuit board are pressed by the double-inclined device to bend upward and downward respectively, so that the second One point is open to the second point and is not electrically coupled, and the first connection port is at a high potential.

In one embodiment, when the first connection port changes from a low potential to a high potential, the control unit is awakened.

One of the features of the present invention is to provide a method for controlling a transmitter, including: sending out a first time period electrical signal in a first time period; and sending out a second time period electrical signal in a second time period, The first time period electrical signal and the second time period electrical signal contain different signal frequency groups.

One of the features of the present invention is to provide a transmitter for sending out a first time period electrical signal in a first time period; and sending out a second time period electrical signal in a second time period, wherein the first time period The electrical signal and the signal frequency group included in the second time period electrical signal are different.

One of the features of the present invention is to provide a touch control system, the touch control system includes: a transmitter, a touch panel, and a touch processing device connected to the touch panel, used according to a first time period The electrical signal and a second time period electrical signal detect the transmitter, wherein the transmitter 器, used to send out the first time period electrical signal in a first time period; and send out the second time period electrical signal in a second time period, wherein the first time period electrical signal and the second time period electrical signal include The signal frequency group is different.

In an embodiment, the aforementioned one signal frequency group includes signals of one or more frequencies.

In one embodiment, the first time period is after the transmitter detects a beacon signal. In another embodiment, there is a first delay time between the detection period of the lighthouse signal and the first period.

In one embodiment, there is a second delay time between the first time period and the second time period.

In one embodiment, there is a third delay time after the second time period.

In one embodiment, before the transmitter detects the beacon signal, an interference signal is detected. In another embodiment, the interference signal includes a signal having a coherent frequency with the first period electrical signal and the second period electrical signal.

Please refer to Table 1 above. In one embodiment, when the tip of the transmitter does not touch an object, a first signal source and a second signal source of the transmitter are made to emit the same signal frequency at the same time. Group.

Please refer to Table 1 above. In one embodiment, when the pen tip section does not touch an object and a first switch of the transmitter is open, the first signal source and the second signal source are made to simultaneously emit the same signal. The first signal frequency group, when the pen tip section is not in contact with an object and the first switch is short-circuited, the first signal source and the second signal originate from the first time period and simultaneously send out the same second signal frequency group , Wherein the first signal frequency group is different from the second signal frequency group.

Please refer to Table 1 above. In one embodiment, when the pen tip section does not touch an object and a second switch of the transmitter is open, the first signal source and the second signal source are made to simultaneously emit the same The first signal frequency group, when the pen tip section does not touch an object and the second switch is short-circuited, the first signal source and the second signal source from the second time period simultaneously emit the same third signal frequency group , Wherein the first signal frequency group is different from the third signal frequency group.

Please refer to Table 2 above. In one embodiment, when the pen tip section contacts an object, a first signal source and a second signal source of the transmitter are made to emit in the second period and the first period, respectively. Different signal frequency groups.

Please refer to Table 2 above. In one embodiment, when the pen tip section contacts an object and a first switch of the transmitter is open, the second signal is caused to emit a first signal frequency group during the first time period. Group, when the pen tip section contacts an object and the first switch is short-circuited, the second signal originates from the first time period to send out a second signal frequency group, wherein the first signal frequency group is different from the second signal Frequency group.

Please refer to Table 2 above. In one embodiment, when the pen tip section contacts an object and a second switch of the transmitter is open, the first signal is caused to emit a third signal frequency group during the second time period. Group, when the pen tip section touches an object and the second switch is short-circuited, the first signal is generated from the second time period to send out the second signal frequency group, wherein the third signal frequency group is different from the second signal Frequency group.

In one embodiment, a ratio of a first signal strength M1 and a second signal strength M2 emitted by the first signal source and the second signal source in the second period and the first period respectively corresponds to the transmission A force of the letter device.

In one embodiment, the sending method is further included in a zeroth period, so that a ring The shape electrode sends out a zeroth period electrical signal, wherein the zeroth period is after the transmitter detects a beacon signal. In another embodiment, there is a zeroth delay time between the detection period of the lighthouse signal and the zeroth period.

In one embodiment, the ring-shaped electrode is made to emit no electrical signals during the first time period and the second time period.

In an embodiment, the zeroth period electrical signal is different from the signal frequency groups included in the first period electrical signal and the second period electrical signal.

One of the features of the present invention is to provide a method for controlling a transmitter, including: sending out a first time period electrical signal in a first time period; and sending out a second time period electrical signal in a second time period, The first period electrical signal and the second period electrical signal contain the same signal frequency group.

One of the features of the present invention is to provide a transmitter for sending out a first time period electrical signal in a first time period; and sending out a second time period electrical signal in a second time period, wherein the first time period The electrical signal is the same as the signal frequency group included in the second time period electrical signal.

One of the features of the present invention is to provide a touch control system. The touch control system includes: a transmitter, a touch panel, and a touch processing device connected to the touch panel, which is used for according to a first period of time. An electrical signal and a second time period electrical signal detect the transmitter, wherein the transmitter is used to send out the first time period electrical signal in a first time period; and send out the second time period electrical signal in a second time period , Wherein the first period electrical signal and the second period electrical signal contain the same signal frequency group.

In one embodiment, the above-mentioned signal frequency group includes one or more frequency groups. Rate of signal.

In one embodiment, the first time period is after the transmitter detects a beacon signal. In another embodiment, there is a first delay time between the detection period of the lighthouse signal and the first period.

In one embodiment, there is a second delay time between the first time period and the second time period.

In one embodiment, there is a third delay time after the second time period.

In one embodiment, before the transmitter detects the beacon signal, an interference signal is detected. In another embodiment, the interference signal includes a signal having a coherent frequency with the first period electrical signal and the second period electrical signal.

Please refer to Table 3 above. In one embodiment, when the tip of the transmitter does not touch an object, a first signal source and a second signal source of the transmitter are made to send out the same signal frequency at the same time. Group.

Please refer to Table 3 above. In one embodiment, when the pen tip section does not touch an object and a first switch of the transmitter is open, the first signal source and the second signal source are made to simultaneously emit the same signal. The first signal frequency group, when the pen tip section does not touch an object and the first switch is short-circuited, the first signal source and the second signal source simultaneously emit the same second signal frequency group, wherein the first signal source The signal frequency group is different from the second signal frequency group.

Please refer to Table 3 above. In one embodiment, when the pen tip section does not touch an object and a second switch of the transmitter is open, the first signal source and the second signal source are made to simultaneously emit the same The first signal frequency group, when the pen tip section does not touch an object and the second switch is short-circuited, the first signal source and the second signal source simultaneously send out the same third signal frequency group Group, wherein the first signal frequency group is different from the third signal frequency group.

Please refer to Table 4 above. In one embodiment, when the pen tip section contacts an object, a first signal source and a second signal source of the transmitter are made to emit in the second time period and the first time period, respectively. The same signal frequency group.

Please refer to Table 4 above. In one embodiment, when the pen tip section contacts an object and a first switch of the transmitter is open, the second signal is caused to emit a first signal frequency group during the first time period. Group, when the pen tip section contacts an object and the first switch is short-circuited, the second signal originates from the first time period to send out a second signal frequency group, wherein the first signal frequency group is different from the second signal Frequency group.

Please refer to Table 4 above. In one embodiment, when the pen tip section contacts an object and a second switch of the transmitter is open, the first signal is caused to emit a third signal frequency group during the second time period. Group, when the pen tip section touches an object and the second switch is short-circuited, the first signal is generated from the second time period to send out the second signal frequency group, wherein the third signal frequency group is different from the second signal Frequency group.

In one embodiment, the signaling method further includes in a zeroth period, causing a ring electrode to emit a zeroth period electrical signal, wherein the zeroth period is after the transmitter detects a beacon signal . In another embodiment, there is a zeroth delay time between the detection period of the lighthouse signal and the zeroth period.

In one embodiment, the ring-shaped electrode is made to emit no electrical signals during the first time period and the second time period.

In one embodiment, the zeroth period electrical signal is the same as the signal frequency group included in the first period electrical signal and the second period electrical signal.

In one embodiment, a ratio of a first signal strength M1 and a second signal strength M2 emitted by the first signal source and the second signal source in the second period and the first period respectively corresponds to the transmission A force of the letter device.

One of the features of the present invention is to provide a detection method for detecting a transmitter, including: detecting a first time period electrical signal sent by the transmitter in a first time period; and in a second time period Internally detecting a second time period electrical signal sent by the transmitter, wherein the first time period electrical signal and the second time period electrical signal contain different signal frequency groups.

One of the characteristics of the present invention is to provide a touch processing device for detecting a sender, which is used to connect to a touch panel, the touch panel includes a plurality of first electrodes and a plurality of second electrodes and the overlapping parts thereof are formed The touch processing device is used to detect a first period electrical signal sent by the transmitter in a first period of time; and detect the electrical signal of the transmitter in a second period of time. A second time period electrical signal is sent, wherein the first time period electrical signal and the second time period electrical signal contain different signal frequency groups.

One of the characteristics of the present invention is to provide a touch control system, the touch control system includes: a transmitter, a touch panel, and a touch processing device connected to the touch panel, used according to the first time period The electrical signal and the second time period electrical signal detect the transmitter, wherein the transmitter is used to emit a first time period electrical signal in a first time period; and a second time period electrical signal in a second time period , Wherein the first period electrical signal and the second period electrical signal contain different signal frequency groups.

In an embodiment, the aforementioned one signal frequency group includes signals of one or more frequencies.

In one embodiment, the first time period is when the touch panel emits a beacon signal after that. In another embodiment, there is a first delay time between the emission period of the lighthouse signal and the first period.

In one embodiment, there is a second delay time between the first time period and the second time period.

In one embodiment, there is a third delay time after the second time period. In one embodiment, other detection steps are included after the second time period.

In one embodiment, an interference signal is detected before the beacon signal is sent. In another embodiment, after the first time period, an interference signal is detected. In a further embodiment, after the second time period, an interference signal is detected. In another embodiment, the interference signal includes a signal having a coherent frequency with the first period electrical signal and the second period electrical signal.

Please refer to Table 1 above. In one embodiment, when the transmitter sends out a single signal frequency group at the same time, it is determined that the tip of the transmitter does not touch an object.

Please refer to Table 1 above. In one embodiment, when the transmitter emits the same first signal frequency group in the first time period, it is determined that the pen tip section does not touch an object and the first signal of the transmitter is A switch is open, and when the transmitter simultaneously sends out the same second signal frequency group during the first time period, it is determined that the pen tip section is not in contact with an object and the first switch is short-circuited, wherein the first signal frequency group is different In the second signal frequency group.

Please refer to Table 1 above. In one embodiment, when the transmitter emits the same first signal frequency group in the second time period, it is determined that the pen tip section does not touch an object and the first signal of the transmitter is The two switches are open. When the transmitter simultaneously sends out the same third signal frequency group in the second time period, it is determined that the pen tip section is not in contact with the object and the second switch is short-circuited, and the first switch is short-circuited. The signal frequency group is different from the third signal frequency group.

Please refer to Table 2 above. In one embodiment, when the first period electrical signal and the second period electrical signal include different signal frequency groups, it is determined that the pen tip section is in contact with an object.

Please refer to Table 2 above. In one embodiment, when the transmitter sends out a first signal frequency group during the first time period, it is determined that the pen tip section is in contact with an object and a first switch of the transmitter is open. When the transmitter sends out a second signal frequency group in the first time period, it is determined that the pen tip section is in contact with an object and a first switch of the transmitter is short-circuited, wherein the first signal frequency group is different from the The second signal frequency group.

Please refer to Table 2 above. In one embodiment, when the transmitter sends out a third signal frequency group in the second time period, it is determined that the pen tip section is in contact with the object and a second switch of the transmitter is open. When the transmitter sends out the second signal frequency group in the second time period, it is determined that the pen tip section is in contact with the object and the second switch is short-circuited, wherein the third signal frequency group is different from the second signal frequency group group.

In one embodiment, the method further includes: calculating a ratio value of a first signal strength M1 and a second signal strength M2 of the first period electrical signal and the second period electrical signal respectively; and calculating according to the ratio value A force of the transmitter.

In one embodiment, it further includes detecting a zeroth period electrical signal sent by the transmitter in a zeroth period, wherein the zeroth period is after the beacon signal is sent. In another embodiment, there is a zeroth delay time between the emission period of the lighthouse signal and the zeroth period.

In an embodiment, the zeroth period electrical signal is different from the signal frequency groups included in the first period electrical signal and the second period electrical signal.

One of the characteristics of the present invention is to provide a detection method for detecting a sender, Including: detecting a first time period electrical signal sent by the transmitter in a first time period; and detecting a second time period electrical signal sent by the transmitter in a second time period, wherein the first time period The time period electrical signal is the same as the signal frequency group included in the second time period electrical signal.

One of the characteristics of the present invention is to provide a touch processing device for detecting a sender, which is used to connect to a touch panel, the touch panel includes a plurality of first electrodes and a plurality of second electrodes and the overlapping parts thereof are formed The touch processing device is used to detect a first period electrical signal sent by the transmitter in a first period of time; and detect the electrical signal of the transmitter in a second period of time. A second time period electrical signal is sent, wherein the first time period electrical signal and the second time period electrical signal contain the same signal frequency group.

One of the characteristics of the present invention is to provide a touch control system. The touch control system includes: a transmitter, a touch panel, and a touch processing device connected to the touch panel, wherein the touch panel includes a plurality of A plurality of sensing points formed by a first electrode, a plurality of second electrodes and their overlapping positions, the touch processing device is used for detecting a first period electrical signal emitted by the transmitter in a first period And in a second period of time to detect a second period of electrical signal sent by the transmitter, wherein the first period of electrical signal and the second period of electrical signal include the same signal frequency group.

In an embodiment, the aforementioned one signal frequency group includes signals of one or more frequencies.

In one embodiment, the first time period is after the touch panel sends out a beacon signal. In another embodiment, there is a first delay time between the emission period of the lighthouse signal and the first period.

In one embodiment, there is a second delay between the first time period and the second time period time.

In one embodiment, there is a third delay time after the second time period. In one embodiment, other detection steps are included after the second time period.

In one embodiment, an interference signal is detected before the beacon signal is sent. In another embodiment, after the first time period, an interference signal is detected. In another embodiment, after the second time period, an interference signal is detected. In another embodiment, the interference signal includes a signal having a coherent frequency with the first period electrical signal and the second period electrical signal.

Please refer to Table 3 above. In one embodiment, when the first period electrical signal and the second period electrical signal have the same single signal frequency group, it is determined that the tip of the transmitter does not touch an object. .

Please refer to Table 3 above. In one embodiment, when the transmitter sends out a first signal frequency group, it is determined that the pen tip section does not touch an object and a first switch of the transmitter is open. When the transmitter sends out a second signal frequency group, it is determined that the pen tip section does not touch an object and the first switch of the transmitter is short-circuited, wherein the first signal frequency group is different from the second signal frequency group.

Please refer to Table 3 above. In one embodiment, when the transmitter sends out a first signal frequency group, it is determined that the pen tip section does not touch an object and a second switch of the transmitter is open. When the transmitter sends out a third signal frequency group, it is determined that the pen tip section does not touch an object and the second switch of the transmitter is short-circuited, wherein the first signal frequency group is different from the third signal frequency group.

Please refer to Table 4 above. In one embodiment, when the first period of time the electrical signal and When the second period electrical signal has the same single signal frequency group, and a ratio value of a first signal strength M1 of the first period electrical signal to a second signal strength M2 of the second period electrical signal is not When it is within a first range, it is determined that the tip of the transmitter touches the object.

Please refer to Table 4 above. In one embodiment, when the transmitter sends out a first signal frequency group during the first time period and the ratio value is not within the first range, it is determined that the pen tip section is in contact with the object and A first switch of the transmitter is open, and when the transmitter sends out a second signal frequency group during the first time period and the ratio value is not within the first range, it is determined that the pen tip section is in contact with the object and the transmitter is The first switch of the transmitter is short-circuited, wherein the first signal frequency group is different from the second signal frequency group.

Please refer to Table 4 above. In one embodiment, when the transmitter sends out a third signal frequency group in the second time period and the ratio value is not within the first range, it is determined that the pen tip section is in contact with the object and A second switch of the transmitter is open, and when the transmitter sends out a second signal frequency group during the second time period and the ratio value is not within the first range, it is determined that the pen tip section is in contact with the object and the transmitter is The second switch of the transmitter is short-circuited, wherein the third signal frequency group is different from the second signal frequency group.

In one embodiment, the method further includes: calculating a ratio value of a first signal strength M1 and a second signal strength M2 of the first period electrical signal and the second period electrical signal respectively; and calculating according to the ratio value A force of the transmitter.

In one embodiment, it further includes detecting a zeroth period electrical signal sent by the transmitter in a zeroth period, wherein the zeroth period is after the beacon signal is sent. In another embodiment, there is a zeroth delay time between the emission period of the lighthouse signal and the zeroth period.

In one embodiment, the zeroth period electrical signal and the first period electrical signal and the The signal frequency group included in the second time period electrical signal is the same.

One of the characteristics of the present invention is to provide a transmitter, comprising: a pen tip section; and a ring electrode surrounding the pen tip section, the pen tip section and the ring electrode are electrically disconnected.

In one embodiment, the ring electrode includes a plurality of disconnected electrodes.

In an embodiment, in a zeroth period, the ring-shaped electrode and the pen tip section simultaneously emit electrical signals. In another embodiment, during a first time period, the pen tip section emits an electric signal, but the ring electrode does not emit an electric signal. In another embodiment, the first time period is after the zeroth time period.

In one embodiment, the electrical signals emitted by the ring electrode and the pen tip segment include the same signal frequency group. In another embodiment, the ring electrode and the pen tip section respectively emit different signal frequency groups.

One of the features of the present invention is to provide a method for detecting the position of a transmitter, wherein the transmitter includes a tip section and a ring electrode surrounding the tip section. The electrical properties of the tip section and the ring electrode are Without coupling, the detection method includes: detecting the electrical signals emitted by the ring electrode and the pen tip section simultaneously in a zeroth period; and detecting the electrical signals emitted by the pen tip section in a first period.

One of the characteristics of the present invention is to provide a touch processing device for detecting the position of a transmitter, wherein the transmitter includes a tip segment and a ring electrode surrounding the tip segment, the tip segment and the ring electrode The touch processing device is connected to a touch panel, and the touch panel includes a plurality of first electrodes and a plurality of second electrodes and a plurality of sensing points formed by overlapping the touch processing device The device is used for detecting the electrical signal emitted by the ring electrode and the pen tip segment simultaneously in a zeroth period; and detecting the electrical signal emitted by the pen tip segment in a first period.

One of the features of the present invention is to provide a touch system, including a transmitter, a touch panel, and a touch processing device connected to the touch panel, wherein the transmitter includes a tip section and a surround A ring electrode of the pen tip section, the pen tip section and the ring electrode are electrically uncoupled, the touch panel includes a plurality of first electrodes, a plurality of second electrodes and a plurality of sensing points formed by overlapping places , The touch processing device is used for detecting the electrical signals emitted by the ring electrode and the pen tip segment at the same time in a zeroth period; and detecting the electrical signals emitted by the pen tip segment in a first period.

In one embodiment, the electrical signals emitted by the ring electrode and the pen tip segment include the same signal frequency group. In another embodiment, the ring electrode and the pen tip section respectively emit different signal frequency groups.

In one embodiment, the first time period is after the zeroth time period.

In one embodiment, it further includes calculating a first center of gravity position of the transmitter based on the detected electrical signal in the zeroth period. In another embodiment, it further includes calculating a second center of gravity position of the transmitter based on the electrical signal detected in the first time period.

In one embodiment, a surface position of the transmitter contacting a touch panel is calculated based on the first center of gravity position and the second center of gravity position, where the surface position is the axis of the transmitter's pen tip section and the The location where the surface layers of the touch panel meet.

In one embodiment, a display position where the transmitter contacts a touch panel is calculated based on the first center of gravity position and the second center of gravity position, where the display position is the axis of the transmitter's pen tip section and the The location where the display layers of the touch panel meet.

In an embodiment, an inclination angle at which the transmitter contacts a touch panel is calculated based on the first center of gravity position and the second center of gravity position.

One of the characteristics of the present invention is to provide a method for calculating a surface position of a transmitter contacting a touch panel. The method includes: receiving a first center of gravity position of the transmitter, the first center of gravity position being based on the Calculated by a ring electrode of the transmitter and the electrical signal sent by the pen tip section; receiving a second center of gravity position of the transmitter, the second center of gravity position is calculated based on the electrical signal sent by the pen tip section And calculate the surface position according to the first center of gravity position and the second center of gravity position, where the surface position is the position where the axis of the pen tip section of the transmitter intersects with the surface layer of the touch panel.

One of the characteristics of the present invention is to provide a method for calculating a display position of a transmitter contacting a touch panel. The method includes: receiving a first center of gravity position of the transmitter, the first center of gravity position being based on the Calculated by a ring electrode of the transmitter and the electrical signal sent by the tip section; receiving a second center of gravity position of the transmitter, the second center of gravity position is calculated based on the electrical signal sent by the tip section And calculate the display position according to the first center of gravity position and the second center of gravity position, where the display position is the position where the axis of the pen tip section of the transmitter intersects with the display layer of the touch panel.

One of the characteristics of the present invention is to provide a method for calculating an inclination angle of a transmitter contacting a touch panel. The method includes: receiving a first center of gravity position of the transmitter, the first center of gravity position being based on the Calculated by a ring electrode of the transmitter and the electrical signal sent by the tip section; receiving a second center of gravity position of the transmitter, the second center of gravity position is calculated based on the electrical signal sent by the tip section And calculate the inclination angle based on the first center of gravity position and the second center of gravity position.

In an embodiment, it further includes calculating the first center of gravity position in a zeroth period. In another embodiment, it further includes calculating the second center of gravity position in a first time period. In an embodiment , The first period is after the zeroth period. In one embodiment, the ring electrode and the pen tip section respectively emit different signal frequency groups.

One of the characteristics of the present invention is to provide a display method, including: receiving a position of a transmitter; receiving a tilt angle of the transmitter; and determining a display range according to the position and the tilt angle.

In an embodiment, the position includes one of the following: a first center of gravity position; a second center of gravity position; a surface position; and a display position, wherein the first center of gravity position is based on a ring of the transmitter The second center of gravity is calculated based on the electrical signal emitted by the pen tip section, and the surface position is the axis of the pen tip section of the transmitter and a touch point. The position where the surface layer of the control panel intersects, and the display position is the position where the axis of the pen tip section of the transmitter intersects with the display layer of the touch panel. In one embodiment, the ring electrode and the pen tip section respectively emit different signal frequency groups.

In one embodiment, the display range includes an oval shape. In another embodiment, the position is located at one of the following: the center of the ellipse; one of the focal points of the ellipse; and one of the intersection points between the line of the bifocals of the ellipse and the ellipse. In one embodiment, the connecting direction of the bifocals of the ellipse corresponds to the direction of the tilt angle.

In one embodiment, the display range includes a teardrop shape. In another embodiment, the location is located at one of the following: the center of the teardrop shape; the apex of the teardrop shape; and the end of the teardrop shape. In an embodiment, the teardrop-shaped direction corresponds to the direction of the inclination angle.

In an embodiment, the direction of the display range corresponds to the direction of the tilt angle. In another embodiment, the size of the display range corresponds to the size of the tilt angle. In a further embodiment, the color of the display range corresponds to one of the following: the size of the tilt angle; And the direction of the angle of inclination.

In one embodiment, it further includes receiving a force of the transmitter, and the size of the display range corresponds to the force of the transmitter.

One of the characteristics of the present invention is to provide a method for sending a signal by a transmitter, which includes: when a force sensor of the transmitter does not sense force, sending out a first signal with a first signal strength. Signal; and when the force sensor senses a force, it sends a second electrical signal with a second signal strength, wherein the first signal strength is greater than the second signal strength.

In one embodiment, the force sensor includes a tip section of the transmitter.

In one embodiment, the transmitter further includes a ring electrode, wherein the first electrical signal is emitted by the pen tip section and the ring electrode, and the second electrical signal is emitted by the pen tip section.

One of the features of the present invention is to provide a signal transmitter, including: a force sensor; and a control module for: when the force sensor does not sense force, the transmitter is Send out a first electric signal with a first signal strength; and when the force sensor senses the force, make the transmitter send a second electric signal with a second signal strength, wherein the first signal The intensity is greater than the second signal intensity.

Code Division Multiple Access (CDMA) is a wireless spread spectrum communication technology adopted by third-generation mobile communication services. In wireless communication technology, spread spectrum refers to that the bandwidth consumed by the carrier signal itself exceeds the bandwidth of the content carried by the carrier signal. Using a carrier signal with a larger frequency bandwidth is more able to tolerate interference and noise signals received during transmission. One of the spread spectrum technologies is Direct Sequence Spreading Spectrum (DSSS) modulation technology. The DSSS modulation technology uses a bit sequence code called Pseudo Noise (PN). This one The bit sequence code or virtual random code contains multiple short-period pulse waves. The period of each pulse wave is also called a chip, and the period of each chip is shorter than the period of the data code. In other words, the bandwidth occupied by the virtual random code is higher than that of the data code. Turning a data code with a lower bandwidth into a virtual random code with a higher bandwidth means that the bandwidth of the modulated carrier signal will be the same as the bandwidth of the virtual random code.

In the modulation process of the carrier signal, it is mainly to multiply the data code and the virtual random number, and the so-called virtual random number here is usually a pseudo random sequence (pseudo random sequence), this sequence usually contains 1 and -1 combination. The characteristic of the virtual random number is that when the virtual random number is multiplied by the virtual random number, that is, 1x1=1, -1x-1=1, it will be restored to the original value. This step is called de-spreading. In other words, when the receiving end also knows this string of virtual random codes, as long as the operation of de-spreading is performed, the content code contained in the carrier signal can be known.

Please refer to Figure 30, which is a waveform diagram of spread spectrum technology. The top waveform in Figure 30 is the data code, the middle waveform is the pseudo random number code, which is the so-called virtual random number, and the bottom is the carrier signal waveform. It can be known that when the potential of the data code is high, the waveform of the carrier signal is exactly the opposite of the waveform of the virtual random code. When the potential of the data code is low, the waveform of the carrier signal is equivalent to the waveform of the virtual random code. In other words, when the receiving end compares the carrier signal with the virtual random code, when the waveform is opposite, it can be inferred that the potential of the data code is high. Conversely, when the waveform of the carrier signal and the virtual random code are the same, it can be inferred that the potential of the data code is low. Accordingly, as long as the virtual random number is known, the receiving end can push back the data code.

Please refer to FIG. 31, which is a variation of the embodiment shown in FIG. 1. The touch system 100 further includes a first stylus 111 and/or a second stylus 112. In one embodiment, the stylus 111 and 112 are active stylus pens.

In some embodiments, the active stylus 111 or 112 can be made to encode the sensing value of each sensor on the pen into the aforementioned data code. The sensed value of the so-called sensor can include but is not limited to the following: the pressure value of the pen tip, the sensed value of whether the button is pressed, the posture sensed value of the gyroscope, the acceleration sensed value of the accelerometer , The sensed value of battery power, the serial number value of the pen body, the wireless signal strength received by the pen body, etc. Then, the active stylus 111 or 112 encodes the aforementioned data code into a carrier signal after spreading according to a certain virtual random number. Then, the electric signal containing the carrier signal is sent out through the pen tip, so that after the touch processing device of the touch screen receives the electric signal, at least the following kinds of information can be obtained: The active stylus 111 or 112 is close to the position of the touch screen , The virtual random number format used by the active stylus 111 or 112, and the content of the aforementioned data code.

In the above process, the touch processing device 130 at the receiving end must synchronize the received carrier signal with the virtual random code to obtain the correct data code. However, when the active stylus 111 or 112 sends out an electrical signal, the touch processing device 130 may not be able to synchronize immediately, and it is difficult to calculate the data code.

The receiving end can usually delay the multiplication operation of the received carrier signal or a local oscillating signal generated by the receiving end with a known virtual random number for a period of time, and then perform the multiplication operation, and the delayed multiplication can be called a correlation operation . When the two signals are not synchronized, the calculated value of their related operations will not exceed a threshold value. Conversely, when the two signals are synchronized, the calculated value of their related operations will exceed the threshold. When the two signals are not synchronized, the receiving end can repeatedly adjust the delay time until the two signals are synchronized or aligned.

In an embodiment of the present invention, the electrical signal or carrier signal sent by the active stylus may include a signal frame, and the signal frame further includes a preamble and subsequent data Code segment. The data code segment can be used to transmit a sensing state of a sensor on the stylus. For example, sensing values such as whether a button on the stylus is pressed or the pressure value sensed by the tip section of the stylus can be transmitted.

In a variation of this embodiment, the active stylus 111 or 112 can transmit the above-mentioned complete signal frame at different time periods to notify the state of the sensor. In another variation of this embodiment, different active stylus pens can have different pre-codes and or virtual random numbers, so that the touch processing device 130 can recognize and/or distinguish at least one that is close to the touch screen 120 at the same time. Two active styluses. For example, the first active stylus 111 sends out a first preamble modulated by a first virtual random number, and the second active stylus 112 sends out a second preamble modulated by a second virtual random number. Preamble. Then, according to the first virtual random number and the second virtual random number, the touch processing device 130 demodulates or de-spreads the received signal, and can determine whether the first preamble and/ Or the second preamble.

When the touch processing device 130 learns that the electrical signal contains two preambles, it can determine the first active stylus 111 and the second active stylus 111 according to the corresponding first virtual random number and the second virtual random number respectively. The active stylus 112 is close to the touch screen 120. Furthermore, since the touch processing device 130 knows the timing of the first virtual random number and the second virtual random number, it can synchronize with the signal frame sent by the first active stylus 111 and the second active stylus 112 respectively, and then Decode the data code segment behind the signal frame.

In an embodiment of the present invention, for quick synchronization, a plurality of or all of the second electrodes 122 are connected to the same line or the same channel, which may be referred to as a synchronization line or a synchronization channel herein. The touch processing device 130 is responsible for measuring the synchronization line or the synchronization channel, and performing synchronization actions for the known preamble.

Those of ordinary skill in the art can understand that when the touch processing device 130 knows the virtual random number and the preamble to be transmitted, it can synchronize the carrier signal with the conventional technology, or find the carrier signal and the local oscillation signal. The phase shift (phase shift). After the phase difference between the two is confirmed, the first electrode 121 receiving the electrical signal can be used to decode the subsequent data code segment, so as to know the sensor status transmitted by the active stylus 111 or 112.

In an embodiment of the present invention, the foregoing decoding step may only perform decoding of subsequent data code segments for one carrier signal received by the first electrode 121. The carrier signal of the first electrode 121 used for decoding is the largest signal of all the first electrodes 121 and/or the second electrode 122.

In another embodiment of the present invention, the data code segment decoding step may be performed on the carrier signals received by the plurality of first electrodes 121, and the obtained data codes should be consistent. When there is inconsistency, the data code can be the majority of the same.

In addition, among the carrier signals received by the plurality of first electrodes 121, after the phase difference adjustment obtained, the one most related to the local oscillation signal should be the one with the least noise, usually the closest to the active stylus 111 Or the first electrode 121 at the proximal position of 112. Accordingly, the position of the active stylus 111 or 112 and each first electrode 121 can also be calculated according to the deviation value of the multiple correlation values after the carrier signal received by each first electrode 121 is adjusted by the phase difference. . In other words, the coordinates of the active stylus 111 on the second axis can also be calculated.

Please refer to FIG. 32, which is a schematic flowchart of a method 3200 for resolving a spread spectrum signal according to an embodiment of the present invention. The touch processing device 130 of FIG. 31 can implement the process of FIG. 32, whether it is implemented by software, hardware, or a combination of software and hardware. It is worth noting that unless there is a causal relationship between the various steps, the step number in Figure 32 does not affect the order in which the steps are executed. sequence. Other steps not related to the present invention can also be inserted between the steps.

Step 3210: Connect at least two of the plurality of second electrodes into a synchronization channel. The touch processing device 130 can implement this step by using an analog switch or a digital adder. In a variation, the aforementioned synchronization channel connects all the second electrodes.

Step 3220: Use a first virtual random code to calculate a first preamble of a first signal frame of the signal received by the synchronization channel to obtain a first synchronization message.

Step 3230: Use the first synchronization message and the first virtual random code to decode a first data code subsequent to the first preamble among the signals received by at least one first electrode.

In a variation, the electrical signal used to resolve the first data code comes from the first electrode that receives the largest amount of electrical signal. In another variation, the above-mentioned electrical signal used to calculate the first data code comes from a plurality of the first electrodes. In a derivative change, the method further includes: calculating a plurality of deviation values of the signal-related values of the plurality of first electrodes according to the first synchronization message; and calculating the first active stylus based on the plurality of deviation values The position of the second axis.

Step 3240: Use a second virtual random code to calculate a second preamble of a second signal frame of the signal received by the synchronization channel to obtain a second synchronization message.

Step 3250: According to the second synchronization message and the second virtual random code, decode a second data code subsequent to the second preamble among the signals received by the at least one first electrode.

In a variation, the electrical signal used to resolve the second data code comes from the first electrode that receives the largest amount of electrical signal. In another variation, the above-mentioned electrical signal used to calculate the second data code comes from a plurality of the first electrodes. In a derivative change, the method also includes: Calculating a plurality of deviation values of the signal-related values of the plurality of first electrodes according to the second synchronization message; and calculating the position of the second active stylus on the second axis according to the plurality of deviation values.

One of the advantages of the present invention is that the touch processing device 130 can quickly synchronize the electrical signal modulated by DSSS within a signal frame, and calculate the data sent by the active stylus 111 and/or 112 Code segment. Another advantage of the present invention is that when there are multiple active stylus pens 111 and 112 operating at the same time, these active stylus pens can simultaneously send out signals. As long as these active styluses use different virtual random numbers, even if they send out signals at the same time, the touch processing device 130 can distinguish the signal frame and data code sent by them in the received signal.

In one embodiment, the present invention provides a method for resolving spread spectrum signals, which is suitable for a touch screen. The touch screen includes a plurality of first electrodes parallel to a first axis and a plurality of electrodes parallel to a second axis. The second electrode, the method for calculating the spread spectrum signal includes: connecting at least two of the plurality of second electrodes into a synchronization channel; using a first virtual random code to calculate one of the signals received by the synchronization channel A first preamble of the signal frame to obtain a first synchronization message; and using the first synchronization message and the first virtual random code to locate at least one signal received by the first electrode in the first preamble A first data code following the code is decoded.

In a specific embodiment, the above-mentioned first signal frame comes from a first active stylus close to the touch screen, and the first data code includes at least one of the following types of information: the pressure of the pen tip; The sensed value of whether the button is pressed; the sensed value of the attitude of the gyroscope; the sensed value of acceleration of the accelerometer; the sensed value of battery power; the serial number value of the pen body; and the wireless signal strength received by the pen body, etc.

In a specific embodiment, the aforementioned synchronization channel connects all the second electrodes.

In a specific embodiment, the electrical signal used to resolve the first data code comes from the first electrode that receives the largest amount of electrical signal.

In a specific embodiment, the above-mentioned electrical signal used to calculate the first data code comes from a plurality of the first electrodes. The method for calculating the spread spectrum signal further includes: calculating a plurality of deviation values of the signal-related values of the plurality of first electrodes according to the first synchronization message; and calculating the first active stylus based on the plurality of deviation values The position of the second axis.

In a specific embodiment, the method for resolving spread spectrum signals further includes: using a second virtual random code to resolve a second preamble of a second signal frame of the signal received by the synchronization channel to obtain a first Two synchronization messages; and using the second synchronization message and the second virtual random code to decode a second data code subsequent to the second preamble among the signals received by at least one first electrode, wherein the first The two signal frames come from a second active stylus close to the touch screen.

In a specific embodiment, at least part of the above-mentioned first signal frame and second signal frame appear in the signal received by the first electrode at the same time.

In one embodiment, the present invention provides a touch system for resolving spread spectrum signals, including: a touch screen, the touch screen including a plurality of first electrodes parallel to the first axis and parallel to the second axis A plurality of second electrodes; and a touch processing device connected to the plurality of first electrodes and the plurality of second electrodes, and the touch processing device is used to connect at least two of the plurality of second electrodes to A synchronization channel; using a first virtual random code to resolve a first preamble of a first signal frame of a signal received by the synchronization channel to obtain a first synchronization message; and using the first synchronization message and the The first virtual random code decodes a first data code subsequent to the first preamble among at least one signal received by the first electrode.

In one embodiment, the present invention provides a touch processing device for resolving spread spectrum signals, which is used to connect a plurality of first electrodes parallel to a first axis and a plurality of first electrodes parallel to a second axis on a touch screen. Two electrodes, the touch processing device is used for: connecting at least two of the plurality of second electrodes into a synchronization channel; using a first virtual random number to calculate a first signal frame of the signal received by the synchronization channel A first preamble to obtain a first synchronization message; and using the first synchronization message and the first virtual random code to combine at least one signal received by the first electrode that is located after the first preamble A first data code is decoded.

In a specific embodiment, the above-mentioned first signal frame comes from a first active stylus close to the touch screen, and the first data code includes at least one of the following types of information: the pressure of the pen tip; The sensed value of whether the button is pressed; the sensed value of the attitude of the gyroscope; the sensed value of acceleration of the accelerometer; the sensed value of battery power; the serial number value of the pen body; and the wireless signal strength received by the pen body, etc.

In a specific embodiment, the aforementioned synchronization channel connects all the second electrodes.

In a specific embodiment, the electrical signal used to resolve the first data code comes from the first electrode that receives the largest amount of electrical signal.

In a specific embodiment, the above-mentioned electrical signal used to calculate the first data code comes from a plurality of the first electrodes. The touch processing device is further used for: calculating a plurality of deviation values of the signal-related values of the plurality of first electrodes according to the first synchronization message; The position of the second axis.

In a specific embodiment, the touch processing device is further used for: using a second virtual random code to calculate a second preamble of a second signal frame of the signal received by the synchronization channel to obtain Obtaining a second synchronization message; and using the second synchronization message and the second virtual random code to decode a second data code subsequent to the second preamble among the signals received by at least one first electrode, wherein The above-mentioned second signal frame comes from a second active stylus close to the touch screen.

In a specific embodiment, at least part of the above-mentioned first signal frame and second signal frame appear in the signal received by the first electrode at the same time.

Please refer to FIG. 33, which is a block diagram of an active stylus 111 according to an embodiment of the present invention. The active stylus 111 may include a controller 3310, a clock signal module 3320, a battery 3330, the first element 221 having a first impedance Z1, the second element 222 having a second impedance Z2, and a The nib section 230. The controller 3310 is used to generate two different virtual random coded signals 3311 and 3312 at the same time, and transmit them to the first element 221 and the second element 222 respectively. The controller 3310 may include analog and digital circuits, signal processors, general-purpose computing processors, and volatile or non-volatile memory for storing instructions and data required by the processor. The signal processor and/or processor can execute one or more instruction sets, such as the ARM instruction set, the Intel 8051 instruction set, and so on.

The battery 3330 may be rechargeable or non-rechargeable. The controller 3310 may include a charging circuit for the rechargeable battery 3330. The power stored in the battery 3330 is used to supply the operation of the controller 3310 and the clock signal module 3320. The clock signal module 3320 can be any form of oscillator, which can output one or more clock signals to the controller 3310. For example, the oscillator may be a quartz oscillator, a crystal oscillator (XO), a temperature compensated crystal oscillator (TCXO), an oven controlled crystal oscillator (OCXO), or a voltage controlled crystal oscillator (VCXO). The controller 3310 may include a frequency divider or a frequency multiplier to generate the clock signal required by the data signal or the carrier signal. As shown in Figure 30, the frequency of the data code is slower than the carrier signal. The clock signal module 3320 is used to provide one or more Two clock signals are given to the encoding process described above.

A plurality of virtual random numbers are stored in the controller 3310. A first virtual random number corresponds to signal 3311, and a second virtual random number corresponds to signal 3312. All available virtual random numbers are orthogonal to each other. This means that any two virtual random numbers are orthogonal.

In one embodiment, the mapping relationship between the signal 3311 and the virtual random number is configurable and stored in the controller 3310. For example, some active stylus 111 can store 10 virtual random numbers. Each active stylus 111 can be set to use a set of two virtual random numbers. Therefore, the touch processing device 130 can distinguish five sets of virtual random numbers simultaneously emitted from the touch pens 111. The position of each stylus 111 can be determined according to the electrical signal sent by the tip section 230.

In order to provide an interface for setting the mapping relationship, the stylus 111 may include a human-machine interface of the physical surname for input and output. In an example, the stylus 111 may include indicators of visual effects and/or sound effects to display the set of virtual random numbers used by the controller 3310. The indicator of the visual effect or sound effect is connected to the controller 3310 and is controlled by it.

The visual effect indicator can include multiple light bulbs, light-emitting diodes, or equivalent devices, where each light is related to each group of virtual random numbers. In other examples, the visual effect indicator may include a light-emitting diode, which may flash one or more times in a short period of time to display the mapped virtual random number combination. Or, the visual effect indicator can display different colors to display the set of virtual random numbers.

Similarly, the sound effect indicator may include a buzzer, which is used to alert the user through the number of beeps in a short period of time. Or a loudspeaker can be used to output voice and/or sound to broadcast the set of virtual random numbers.

An input button, a switch, or a knob of the stylus 111 can be used to set the group of virtual random numbers. The state of the button, the switch or the knob can be used to indicate the set of virtual random numbers.

In addition to the physical man-machine interface, the stylus 111 may include a communication unit to receive the setting from the remote machine to the controller 3310. The communication unit can comply with wired or wireless industry standard interfaces, such as Bluetooth, USB, wireless USB, UWB, etc. Those of ordinary skill in the art can understand that similar communication units have been widely used in modern consumer electronic systems, such as smart phones and mobile computers. For example, the transmitter wireless communication unit 770 shown in FIGS. 7A to 7D can be applied to this.

A remote machine can be used to connect to the communication unit to read and/or set the set of virtual random numbers. A setting program can be executed on the remote machine to read or set the set of virtual random numbers to the connected stylus 111. In one embodiment, the remote machine can be connected to multiple stylus 111 at the same time to ensure that each connected stylus 111 uses a different set of virtual random numbers. In case the remote machine detects that the virtual random number combination used by the connected stylus 111 conflicts, the remote machine can automatically assign different sets of virtual random numbers to the conflicting stylus 111.

In some embodiments, the virtual random number combination used by the stylus 111 is fixed or is set rigidly before leaving the factory. The stylus 111 can be painted with a specific color or display a visual effect mark on the stylus body. The user can check the color or visual effect mark of his stylus 111. If they use different colored stylus pens 111, the touch processing device 130 can identify each stylus pen 111.

The stylus 111 may include one or more human-machine interfaces or sensors, such as buttons, knobs, altimeter sensors, gyroscopes, accelerometers, electrical signal receivers, and so on. The control The controller 3310 can periodically collect the status of these man-machine interfaces or sensors. The status or other information (such as the unique identification code of the stylus 111) can be sent to the touch processing device 130 as the data code shown in FIG. 30. The controller 3310 can modulate the data code and the first virtual random code to be transmitted. Those of ordinary skill in the art can understand that decoding submultiple access or direct sequence spread spectrum has been widely used in the third-generation mobile communication technology. The controller 3310 includes hardware circuits and/or embedded processors for modulation. Traditionally, a multiplier is required to generate a carrier signal based on the data code and the virtual random code. If there is no need to send any data codes, the signals 3311 and 3312 received by the pen tip section 230 can be the first virtual random number and the second virtual random number, respectively.

The data code can be modulated according to the first virtual random number to generate the signal 3311. The data code can also be modulated according to the second virtual random number to generate the signal 3312. In other words, the data segment can be transmitted via one or both of the signals 3311 and 3312. The touch processing device 130 can de-spread or decode the data code transmitted by the pen tip 230 according to one of the first and second virtual random numbers. Assuming that the data code decoded according to the first virtual random code matches the data code decoded according to the second virtual random code, the data code is credible. Otherwise, these two different data codes should be discarded or ignored.

The active stylus 111 may further include a receiver to synchronize the touch processing device 130. As described in the previous paragraph, the touch processing device 130 can send out a beacon signal for synchronization through the electrodes of the touch panel 120. The pen tip section 230 can function as a receiving antenna for receiving lighthouse signals. The lighthouse signals shown in FIGS. 9A to 9F can be used in this embodiment.

The controller 3310 can be connected to the pen tip section 230 to receive the beacon signal. In order to correctly receive and identify the beacon signal, the processor 3310 may include such as an integrator, sampler, amplifier, analog-to-digital converter, home detector and any other circuits to receive the beacon signal number. The received signal can be further received by the processor to obtain synchronization signals and/or messages carried by the beacon signal during interference. Once the beacon signal is received, the controller 3310 can transmit the signals 3311 and 3312 through the pen tip section 230 after a predetermined turnaround period known to the touch processing device 130. Or the lighthouse signal may include a time period parameter, which is used to indicate the length of the turnaround time period.

If there are multiple stylus pens 111 operating in the touch control system 100, there is no beacon signal in any turnaround period, which will cause all the stylus pens 111 to simultaneously emit electrical signals. However, since the electrical signals emitted by the stylus 111 are encoded by different virtual random numbers, the touch processing device can distinguish each stylus 111.

In one embodiment, the beacon signal may further include an identification code corresponding to one of the stylus and a turnaround time period. If one of the stylus pens 111 receives the beacon signal containing its identification code, the stylus can send out the electrical signal through the pen tip section 230 after the turnaround time specified by the beacon signal. In order to avoid or reduce interference in the touch control system 100, the touch processing device 130 can send out a beacon signal, which includes multiple sets of stylus identification codes and their designated turnover periods or time slots.

In another method, the touch processing device 130 may transmit multiple lighthouse signals 111. The lighthouse signals are modulated in different ways. For example, the modulation of these lighthouse signals can be changed according to frequency, phase, amplitude, and so on. Therefore, each of the stylus pens 111 can listen to the beacon signal designated by it.

In one embodiment, the touch control system 100 may include differently modulated beacon signals to different groups of stylus 111. In each modulated lighthouse signal, multiple sets of stylus identification codes and their designated turnaround periods or time slots can be included. The touch processing device 130 can control every A modulated update frequency of the lighthouse signal. When one of the stylus pens 111 is stationary, the beacon signal sent to the stylus pen 111 can be delayed or even skipped. When one of the stylus 111 is active, the touch processing device 130 can transmit more beacon signals to the stylus 111 than the other stylus 111, so as to obtain the stylus more frequently and accurately. The position and data code of the stylus. Those of ordinary skill in the art can understand that the touch processing device 130 can adjust the data update rate of each stylus 111 by controlling the transmission of the corresponding lighthouse signal.

In another method, the host 140 may send out the beacon signal. For example, the touch processing device 130 can use a wireless communication unit equipped with the host 140 to transmit the beacon signal. According to the provisions of the wireless communication protocol, the lighthouse signal can be broadcast or unicast to each stylus 111. For example, the Bluetooth protocol defines a broadcast mechanism to transmit advertising messages. The beacon signal can be sent through the broadcast mechanism of the Bluetooth protocol. Any stylus that receives the advertising message as a beacon signal can be synchronized by this. Otherwise, the beacon signal can be unicast wirelessly from the host 140 to the stylus 111. Those of ordinary skill in the art can understand that the synchronization between the stylus 111 and the touch processing device 130 can be synchronized by the lighthouse signal transmitted by the touch panel 120, or by a wired or wireless communication channel between the two. Reached.

Although it can be achieved by a beacon signal, the touch processing device 130 can synchronize the electrical signal by itself. The controller 3310 can transmit a preamble through one or both of the first element 221 and the second element 222. The preamble can be encoded by one or both of the first and second virtual random numbers. The electrical signal finally sent by the pen tip section 230 includes the preamble and/or data code. Once the touch processing device 130 receives an electrical signal through the touch panel 120, it will amplify, sample, convert the received electrical signal into a digital form and store it in the memory. Therefore, the circuit of the touch processing device 130 or the processing embedded therein The device can compare the stored signal with the corresponding preamble of the stylus 111. When the stored signal fully or partially matches the preamble, the touch processing device 130 can calculate the receiving timing of the stored preamble. Accordingly, the touch processing device 130 can calculate the next transmission timing of the stylus 111 according to the stored preamble. In some embodiments, the matching of the preamble can be so fast that the data code transmitted at the same time can be decoded. Especially when the length of the current code is long enough. A sliding window technique can be used to find the preamble for the stored signal in the memory.

When the preamble is found, the touch processing device 130 can calculate a position where the stylus 111 touches or is close to the touch panel 120 according to the received signal. When two or more stylus pens 111 use different sets of virtual random numbers, the pre-codes used by these stylus pens 111 are all different and orthogonal. Even when the pre-codes are received at the same time, the touch processing device 130 can find the position where the stylus 111 is close to the touch panel 120.

Please refer to FIG. 34, which is a block diagram of a touch processing device 130 according to an embodiment of the present invention. The touch processing device 130 may include an embedded processor 3440 for connecting and controlling a connection network 3410, a driving circuit 3420, a sensing circuit 3430, and a host interface 3450. The driving circuit 3420 can respectively connect each first electrode 121 and each second electrode 122 through the connection network 3410 to send a driving signal. The sensing circuit 3430 can respectively connect each first electrode 121 and each second electrode 122 through the connection network 3410 to use these electrodes to sense signals. The embedded processor 3440 can communicate with the host 140 through the host interface 3450. The embedded processor 3440 can execute a program module stored in the non-volatile memory to detect the aforementioned nearby objects or events.

The embedded processor 3440 can dynamically connect to the network 3410. The driving circuit 3420 can be connected to one or more of the first electrodes 121 and/or each of the second electrodes 122. similar Ground, the sensing circuit 3430 can be connected to one or more of the first electrodes 121 and/or each of the second electrodes 122. In one embodiment, the driving circuit 3420 and the sensing circuit 3430 are collectively called an analog front-end circuit, which may include amplifiers, filters, samplers, integrators, digital-to-analog converters, analog-to-digital converters, and adders. Any combination of components such as multipliers, variable resistors, etc. In addition to the analog circuit including the driving circuit 3420 and the sensing circuit 3430, the embedded processor 3440 can perform digital signal processing. The host interface 3450 is used to connect the embedded processor 3440 and the host 140. Typically, the host interface 3450 can be compatible with industry standards such as USB, I2C, PCI, PCI-Express, SCSI, etc. Those of ordinary skill in the art can understand that the host interface 3450 is very common in modern electronic devices.

Please refer to FIG. 35, which is a schematic flowchart of the controller 3310 shown in FIG. 33 according to an embodiment of the present invention. This process can be applied to the stylus 111 shown in FIG. 33. Unless the causality is specifically written, the present invention does not limit the execution sequence of any two steps in FIG. 35.

Optional step 3510: receiving settings of a first virtual random number and a second virtual random number. This setting mechanism has been discussed previously.

Optional step 3520: Receive a lighthouse signal. The touch processing device 130 can send a beacon signal to the stylus 111 through at least one of the first electrode 121 or the second electrode 122 of the touch panel 120. In other embodiments, the touch processing device 130 may request a communication unit of the host 140 to transmit the beacon signal to a corresponding communication unit of the stylus 111.

Optional step 3530: Decode the identification code and the turnover period parameter. If the optional step 3520 is performed and a beacon signal is received, the beacon signal may include an identification code and/or a turnover period parameter for a specific stylus or group of stylus 111. Accordingly, the stylus in the lighthouse signal The identification code of 111 and/or the turnover period parameters are decoded.

Optional step 3540: generate a data code according to the sensor status on the stylus. If the stylus 111, in addition to the pressure sensor connected to the first element 221, also includes one or more sensors on the pen, such as buttons, switches, knobs, battery capacity, etc., it can react on these pens. The data code of the sensor status and/or other information. The other information may include the identification code and/or model, manufacturer name and other information of the stylus 111.

Step 3550: Transmit a first preamble and/or data code according to the first virtual random code to a first element, which has a variable impedance corresponding to the pressure. The transmitted signal can be one or both of the first preamble and the data code. Since they are all coded by the first virtual random number, in theory, the touch processing device 130 can use the electrode 121 and/or the electrode 122 to detect the signal transmitted by the pen tip section 230.

Step 3560: Transmit a second preamble and/or data code according to the second virtual random code to a second element, which has a variable impedance corresponding to the pressure. The transmitted signal can be one or both of the second preamble and the data code. Since they are all coded by the second virtual random number, in theory, the touch processing device 130 can use the electrode 121 and/or the electrode 122 to detect the signal transmitted by the pen tip section 230.

Please refer to FIG. 36A, which is a schematic diagram of a process implemented by the embedded processor 3440 according to an embodiment of the present invention. This process can be applied to the touch processing device 130 shown in FIG. 33 and FIG. 34. Unless the causality is stated, the present invention does not limit the execution order of any two steps in FIG. 36A. Assuming that the touch control system 100 uses a lighthouse signal as a synchronization signal, the process starts at step 3610.

Optional step 3610: transmit a beacon signal. This step corresponds to step 3520 in FIG. 35. The touch processing device 130 can pass through at least one of the first electrodes of the touch panel 120 121 or the second electrode 122 to transmit the beacon signal to the stylus 111. In other embodiments, the touch processing device 130 may request a communication unit of the host 140 to transmit a beacon signal to the corresponding communication unit of the stylus 111. Optionally, the beacon signal may include one or more identification codes and/or turnaround time parameters of one or more specific stylus 111 or a group of specific stylus 111.

Optional step 3620: Wait for the one-round turnaround time period. When the transmitted beacon signal specifies the turnaround period, the embedded processor 3440 or the touch processing device 130 can wait or sleep during this period. In other embodiments, the embedded processor 3440 can perform other functions, such as capacitive sensing during the turnaround period to detect external conductive objects that are close to the touch panel 120.

Step 3630: Receive electrical signals through electrodes of a touch panel. The stylus 111 transmits electrical signals to at least one electrode 121 and 122 of the touch panel 120 through the tip section 230. The electrical signal is received by the sensing circuit 3430 of the touch processing device 130 via the electrode near the pen tip section 230.

Optional step 3640: perform de-spreading on a first preamble of the received electrical signal according to a first virtual random number. If the electrical signal emitted by the stylus 111 includes the first preamble, the embedded processor 3440 of the touch processing device 130 can de-spread the first preamble according to the first virtual random number. In some embodiments, the system 100 does not use the beacon signal to transmit electrical signals at the same time, that is, if steps 3610 and 3620 are omitted, the embedded processor 3440 may need to use sliding window technology to obtain the received signal. The first preamble is because the embedded processor 3440 has no way of knowing when the stylus 111 will transmit the electrical signal.

Optional step 3650: perform despreading on a first data code of the received electrical signal according to the first virtual random code. If the electrical signal sent by the stylus 111 includes the first resource The embedded processor 3440 of the touch processing device 130 can decode the first data code according to the first virtual random number. The embodiment of the present application may include one or both of steps 3640 and 3650.

Optional step 3660: De-spread a second preamble of the received electrical signal according to a second virtual random code. If the electrical signal emitted by the stylus 111 includes the second preamble, the embedded processor 3440 of the touch processing device 130 can de-spread the second preamble according to the second virtual random number. In some embodiments, the system 100 does not use the beacon signal to transmit electrical signals at the same time, that is, if steps 3610 and 3620 are omitted, the embedded processor 3440 may need to use sliding window technology to obtain the received signal. The first preamble is because the embedded processor 3440 has no way of knowing when the stylus 111 will transmit the electrical signal.

Optional step 3670: perform de-spreading on a second data code of the received electrical signal according to the second virtual random code. If the electrical signal sent by the stylus 111 includes the second data code, the embedded processor 3440 of the touch processing device 130 can decode the second data code according to the second virtual random number. The embodiment of the present application may include one or both of steps 3660 and 3670.

In order to reduce the complexity of the design, the controller 3310 can encode the data code corresponding to the state of the sensor on the pen in one of the signals 3311 and 3312. Accordingly, only one of steps 3650 and 3670, and steps 3640 and 3660 need to be performed.

In order to increase the transmission reliability, the controller 3310 can encode data codes in both the signals 3311 and 3312. Accordingly, steps 3650 and 3670 can be performed to obtain the first data code and the second data code. In one embodiment, the process may further include a comparison step to compare the first data code with the second data code. When the two data codes are inconsistent, the process can Abandon these two data codes, because it is obvious that errors have been caused during transmission. However, in order to reduce the complexity of the design, the process may only include performing one of steps 3650 and 3670, although the stylus 111 encodes the data code in both of the signals 3311 and 3312.

In an embodiment lacking a lighthouse signal, assuming that the timing of the stylus 111 to transmit an electrical signal is found in step 3640 or 3650, steps 3660 and/or 3670 can be executed according to the found timing. In other words, synchronization has been established. Conversely, when the timing of the electrical signal is found in step 3660 or 3670, steps 3640 and/or 3650 can be executed according to the found timing. In other words, in order to synchronize with the stylus 111, the embedded processor only needs to execute the sliding window algorithm once to obtain one of the first and second preambles, and the first and second data One of the codes. Otherwise, in an embodiment, steps 3640 to 3670 can be performed simultaneously or independently, although the sliding window technique needs to be performed more than once.

Step 3680: Calculate a pressure based on a signal strength ratio between the first part corresponding to the first virtual random code and the second part corresponding to the second virtual random code. The first part corresponding to the first virtual random code may be one or both of the first preamble and the first data code. Similarly, the second part corresponding to the second virtual random code can be one or both of the second preamble and the second data code. Assuming that the electrical signal includes the first preamble and the second preamble, step 3680 may be to calculate one of the stylus pens based on the signal strength ratio of the first preamble and the second preamble The pressure of the pressure sensor. In the example where the electrical signal includes the first data code and the second data code, the step 3680 may be to calculate a pressure of the stylus based on the ratio of the signal strength of the first data code and the second data code The pressure of the sensor. In a change, assuming that the electrical signal includes all four signals, step 3680 may be to calculate the pressure sensor of the stylus based on the ratio of the signal strength of the first part and the second part. pressure. Assuming that the signal strength of the first part is M1 and the signal strength of the second part is M2, the ratio of the two signal strengths can be M1/M2, M2/M1, (M1-M2)/(M1+M2), ( M2-M1)/(M1+M2), M1/(M1+M2), M2/(M1+M2) and any other calculations involving these two parameters M1 and M2. In other words, when the calculated ratio is a constant or a preset value, it can be obtained that the pressure sensor of the stylus 111 does not sense any pressure. If the pressure sensor is used to sense the pressure of the tip section 230 of the stylus 111, it means that the tip section 230 of the stylus 111 does not touch any objects including the touch panel 120.

When the tip section 230 of the stylus 111 touches the touch panel 120, the tip section 230 is pressed and vibrates. Accordingly, the first impedance value Z1 of the first element 221 changes according to the pressure or the movement stroke of the pen tip section 230, so that the ratio of M1 to M2 is no longer the aforementioned constant or preset value. The touch processing device 130 can sense the pressure value inductively according to the ratio value. The aforementioned constant or preset value may not be a numerical value, but an interval with errors.

Using algorithms well known in the art, the touch processing device 130 can calculate the contact or contact of the tip section 230 of the stylus 111 based on the electrical signals received by at least one of the first electrode 121 and at least one of the second electrode 122. Near a location on the touch panel. Therefore, the touch processing device 130 can receive the position, pressure of the stylus pen 111, the state of the sensor on the pen, and/or other information. Therefore, the information received by the touch-control device 130 can be forwarded to an operating system and application programs running on the host 140.

Please refer to FIG. 36B, which is a schematic diagram of a process implemented by the embedded processor 3440 according to an embodiment of the present invention. This process can be applied to the touch processing device 130 shown in FIG. 33 and FIG. 34. Unless the causality is stated, the present invention does not limit the execution order of any two steps in FIG. 36B. Assuming that the touch control system 100 uses a lighthouse signal as a synchronization signal, the process starts at step 3610.

The difference between the flowcharts shown in FIG. 36A and FIG. 36B is that steps 3630 to 3670 are replaced by steps 3210 and 3250 shown in FIG. 32. One of the objectives of the process 3200 is to use the coupling of at least two second electrodes as a synchronization channel to speed up obtaining the preamble of one or more stylus pens. In other words, the touch processing device 130 does not use the beacon signal mechanism to synchronize the stylus. Although the process shown in FIG. 36B includes optional steps 3610 and 3620, these two steps can be applied to a touch system 100, which includes at least one stylus 111 that can listen to the beacon signal and others that do not synchronize the beacon signal The stylus 111. In other words, the touch processing device 130 can work simultaneously with a stylus with and without the lighthouse signal receiving function. Although the touch processing device 130 requires more processing power and more memory space to store electrical signals, the interoperability of such a touch system is significantly increased.

By comparing the transmission timing of the electrical signal with the turnaround time specified in the lighthouse signal, the touch processing device 130 can detect that a certain stylus 111 does not have the lighthouse signal synchronization capability, because the timing of sending the electrical signal is not Meet the specified turnover period.

If the touch control system 100 includes a stylus 111 with a lighthouse signal synchronization capability and another stylus 111 without this capability, the touch processing device 130 can adjust the transmission timing of the lighthouse signal and/or the lighthouse signal designated The turnaround time allows the two stylus pens 111 to simultaneously transmit electrical signals, so as to minimize the time period for receiving electrical signals from the stylus pens 111 and maximize the time period for detecting external conductive objects such as fingers. In other embodiments, the touch processing device 130 can adjust the sending timing of the beacon signal and/or the turnaround period specified by the beacon signal, so that the two styluses 111 can send electrical signals in non-overlapping periods, so that Minimize the interference between the two electrical signals. Furthermore, since the electrical signal sent by the stylus will interfere with the reception of the lighthouse signal, the touch processing device 130 can adjust the transmission timing of the lighthouse signal and/or the lighthouse signal. The turnaround time specified by the number to reduce or avoid interference between the lighthouse signal and the electrical signal sent by the stylus.

In the embodiment shown in FIGS. 35, 36A, and 36B, each stylus 111 is assigned two virtual random numbers. Therefore, the touch processing device 130 can identify all the stylus pens 111 that simultaneously emit electrical signals. However, unlike the touch processing device 130, the computing resources and internal space of the stylus 111 are quite limited. Therefore, it may be necessary to reduce the computational complexity of the controller 3310. Therefore, the controller 3310 of the stylus 111 shown in FIG. 33 can transmit the same signals 3311 and 3312 encoded with the same virtual random number in two different time periods. As long as each stylus 111 in a touch system 100 is assigned a different virtual random number, the touch processing device 130 can identify all the stylus 111 that may emit electrical signals at the same time. Taking into account the electrical signals emitted by the same stylus 111 in two different time periods, the touch processing device 130 may also calculate a pressure value according to the ratio of the signal strength of the two time periods. Moreover, the controller 3310 can collect the sensor of the stylus 111 twice to generate two data codes, so as to transmit them through the pen tip section 230. By reducing the number of virtual random numbers from two to one, the design complexity of the controller 3310 can be reduced.

Please refer to FIG. 37A, which is a schematic flowchart of a process implemented by the controller 3310 shown in FIG. 33 according to an embodiment of the present invention. This process can also be applied to the stylus 111 shown in FIG. 33. Unless the causality is stated, the present invention does not limit the execution order of any two steps shown in FIG. 37A. Steps 3510, 3530, and 3540 have been explained in the relevant paragraphs of the embodiment shown in FIG. 35.

Optional step 3710: accept the setting of a virtual random number. The setting mechanism has already been described.

Step 3750: Transmit a preamble and/or data code according to the virtual random code to a first component in the first time period, the impedance value of which changes according to the pressure value. The transmission signal It can be one or both of the preamble and the data code. Since they are all encoded by the designated virtual random number, the touch processing device 130 can detect and decode the electrical signals transmitted by the pen tip section 230 and the electrodes 121 and/or 122 in the first time period.

Step 3760: Transmit the preamble and/or data code according to the virtual random code to a second component in the second time period, which has a fixed impedance value. The transmission signal can be one or both of the preamble and the data code. Since they are all encoded by the designated virtual random number, the touch processing device 130 can detect and decode the electrical signals transmitted by the pen tip section 230 and the electrodes 121 and/or 122 in the first time period.

In an embodiment, there may be a turnover period between the first period and the second period. During the turnaround period, the controller 3310 may switch the signal output from the first element 221 to the second element 222.

Please refer to FIG. 37B, which is a schematic diagram of a process implemented by the controller 3310 shown in FIG. 33 according to an embodiment of the present invention. This process can also be applied to the stylus 111 shown in FIG. 33. Unless the causality is stated, the present invention does not limit the execution sequence of any two steps shown in FIG. 37.

Optional step 3745: Generate a first data code according to the state of the sensor on the pen. When the stylus 111 is connected to the pressure sensor of the first element 221, it also contains one or more sensors, such as buttons, switches, knobs, battery capacity, etc., which can reflect the status of the sensors on the pen. And/or other information such as the identification code and/or model and brand name of the stylus 111.

Step 3755: In the first time period, transmit the preamble and/or the first data code according to the virtual random code to the first element, which has a variable impedance that responds to pressure. Transmitted The signal may include one or both of the preamble and the first data code. Since they are all encoded by the designated virtual random number, the touch processing device 130 can detect and decode the signal transmitted by the pen tip section 230 via the electrodes 121 and/or 122 in the first time period. After step 3755, the process can proceed to optional step 3746 to generate additional data codes.

Optional step 3746: Generate a second data code according to the state of the sensor on the pen.

Step 3765: In the second time period, transmit the preamble and/or the second data code according to the virtual random code to the second component, which has a fixed impedance. The transmitted signal may include one or both of the preamble and the second data code. Since they are all encoded by the designated virtual random number, the touch processing device 130 can detect and decode the signal transmitted by the pen tip section 230 via the electrodes 121 and/or 122 in the second time period.

Although in the flowchart of FIG. 37A, the process executes step 3750 before step 3760. Those of ordinary skill in the art can understand that the execution steps of steps 3750 and 3760 can be exchanged. In some embodiments, the process may first execute step 3540, and then execute step 3760. Then, after step 3760 is executed, the process executes step 3750 again. Similarly, in the flowchart of FIG. 37A, the process can perform steps 3745 and 3755 after performing step 3765. In short, the present invention does not require the controller 3310 to let which of the signals 3311 and 3312 be sent first.

Please refer to FIG. 38A, which is a schematic diagram of a process implemented by the embedded processor 3440 according to an embodiment of the present invention. Corresponding to the flowcharts in FIGS. 37A and 37B implemented by one or more stylus pens, this process is applicable to the touch processing device 130 shown in FIGS. 33 and 34. Unless causality is explained, the present invention does not limit the execution sequence of any two steps shown in FIG. 38A. When the system 100 uses the lighthouse signal as the synchronization signal, the process starts at step 3610. Steps 3610 and 3620 have been described in the paragraph of the embodiment shown in FIG. 36A. The process can be executed after step 3620 is executed Go to step 3830.

Step 3830: Receive electrical signals through the electrodes of the touch panel in the first time period and the second time period. Step 3830 can be performed simultaneously with any one of steps 3850 to 3870 in the second time period. The sensing circuit 3430 of the touch processing device 130 receives electrical signals through the electrodes near the tip section 230. The electrical signals received in these two different time periods are stored separately.

Optional step 3840: perform de-spreading on the electrical signal received in the first time period according to a virtual random number to obtain a first preamble. If the electrical signal transmitted by the stylus 111 includes the first preamble, the embedded processor 3440 of the touch processing device 130 can de-spread the first preamble according to the virtual random number. In some embodiments, the system 100 does not use the beacon signal as an opportunity to transmit electrical signals synchronously, that is, steps 3610 and 3620 are not executed, because the embedded processor 3440 does not know when the stylus 111 transmits electrical signals, and may need to be used Sliding window technology to get the preamble in the received electrical signal.

Optional step 3850: according to the virtual random code, decode the electrical signal received in the first time period to obtain the first data code. If the electrical signal transmitted by the stylus 111 includes the first data code, the embedded processor 3440 of the touch processing device 130 can decode the first data code according to the virtual random number. The embodiment of the present application may include one or both of steps 3840 and 3850.

Optional step 3860: perform de-spreading on the electrical signal received in the second time period according to a virtual random number to obtain a second preamble. If the electrical signal transmitted by the stylus 111 includes the second preamble, the embedded processor 3440 of the touch processing device 130 can de-spread the second preamble according to the virtual random number. Please note that since the first preamble and the second preamble are encoded by the same virtual random code, they should be the same regardless of the signal strength. In some embodiments, the system 100 does not use the beacon signal as an opportunity to transmit electrical signals synchronously, that is, steps 3610 and 3620 are not executed, because the embedded processor 3440 does not know when the stylus 111 transmits electrical signals, and may need to be used Sliding window technology to get the preamble in the received electrical signal.

Optional step 3870: decode the electrical signal received in the first time period according to the virtual random code to obtain a second data code. If the electrical signal transmitted by the stylus 111 includes the second data code, the embedded processor 3440 of the touch processing device 130 can decode the second data code according to the virtual random number. The embodiment of the present application may include one or both of steps 3860 and 3870.

Like the embodiment shown in FIG. 37B, the controller 3310 can generate two sets of data codes for two transmissions in two time periods. If the first data code is different from the second data code, the sensor on the pen changes its state during the two generations. Obviously, the position of the stylus may also change during the two generations. Therefore, the touch processing device 130 can calculate the first position and the second position respectively according to the electrical signals received in the first period and the second period. Alternatively, the touch processing device 130 may calculate a single position according to one of the electrical signals received in the first time period and the second time period.

Step 3880: Calculate the pressure according to the ratio of the signal strength of the first part received in the first time period and the second part received in the second time period. The first part of the electrical signal received in the first time period may be one or both of the first preamble and the first data code. Similarly, the second part of the electrical signal received in the second time period may be one or both of the second preamble and the second data code. When the electrical signal includes the first preamble and the second preamble, step 3880 may be to calculate the pressure according to the signal strength ratio of the first preamble and the second preamble. When the electrical signal includes the first data code and the second data code, step 3880 may be based on the The signal strength ratio of a data code to the second data code is used to calculate the pressure. In a change, if the electrical signal contains all four codes, step 3880 can calculate the pressure based on the ratio of the signal strength of the first part received in the first time period to the second part received in the second time period. Assuming that the signal strength of the first part is M1 and the signal strength of the second part is M2, the ratio of the two signal strengths can be M1/M2, M2/M1, (M1-M2)/(M1+M2), ( M2-M1)/(M1+M2), M1/(M1+M2), M2/(M1+M2) and any other calculations involving these two parameters M1 and M2. In other words, when the calculated ratio is a constant or a preset value, it can be obtained that the pressure sensor of the stylus 111 does not sense any pressure. If the pressure sensor is used to sense the pressure of the tip section 230 of the stylus 111, it means that the tip section 230 of the stylus 111 does not touch any objects including the touch panel 120.

Please refer to FIG. 38B, which is a schematic diagram of a process implemented by the embedded processor 3440 according to an embodiment of the present invention. Corresponding to the flowcharts in FIGS. 37A and 37B implemented by one or more stylus pens, this process is applicable to the touch processing device 130 shown in FIGS. 33 and 34. Unless the causality is explained, the present invention does not limit the execution sequence of any two steps shown in FIG. 38B. When the system 100 uses the lighthouse signal as the synchronization signal, the process starts at step 3610. Steps 3610 and 3620 have been described in the paragraph of the embodiment shown in FIG. 36A. The process can execute step 3830 after executing step 3620.

Optional step 3815: According to a virtual random code, perform despreading of the first preamble on the first signal frame received on the synchronization channel in the first time period to obtain a first synchronization information.

Optional step 3825: According to the first synchronization information and the virtual random number, perform the first pre-position for the electrical signal received at the at least one first electrode in the first time period Decoding of the first data code after the code.

Optional step 3835: According to the virtual random code, perform second preamble de-spreading on the second signal frame received on the synchronization channel in the second time period to obtain a second synchronization information.

Optional step 3845: According to the second synchronization information and the virtual random code, perform a second data code after the second preamble for the electrical signal received at at least one of the first electrodes in the second time period Decoding.

In one embodiment, once the first synchronization information corresponding to the first time period is known, the second synchronization information can be calculated accordingly.

In one embodiment, please note that since the first preamble and the second preamble are encoded by the same virtual random code, they should be the same regardless of the signal strength. In some embodiments, the system 100 does not use the beacon signal as an opportunity to transmit electrical signals synchronously, that is, steps 3610 and 3620 are not executed, because the embedded processor 3440 does not know when the stylus 111 transmits electrical signals, and may need to be used Sliding window technology to get the preamble in the received electrical signal.

Like the embodiment shown in FIG. 37B, the controller 3310 can generate two sets of data codes for two transmissions in two time periods. If the first data code is different from the second data code, the sensor on the pen changes its state during the two generations. Obviously, the position of the stylus may also change during the two generations. Therefore, the touch processing device 130 can calculate the first position and the second position respectively according to the electrical signals received in the first period and the second period. Alternatively, the touch processing device 130 may calculate a single position according to one of the electrical signals received in the first time period and the second time period.

Step 3880: According to the first part received in the first time period and the second time period The signal strength ratio of the received second part is used to calculate the pressure. The first part of the electrical signal received in the first time period may be one or both of the first preamble and the first data code. Similarly, the second part of the electrical signal received in the second time period may be one or both of the second preamble and the second data code. When the electrical signal includes the first preamble and the second preamble, step 3880 may be to calculate the pressure according to the signal strength ratio of the first preamble and the second preamble. When the electrical signal includes the first data code and the second data code, step 3880 may be to calculate the pressure based on the signal strength ratio of the first data code and the second data code. In a change, if the electrical signal contains all four codes, step 3880 can calculate the pressure based on the ratio of the signal strength of the first part received in the first time period to the second part received in the second time period. Assuming that the signal strength of the first part is M1 and the signal strength of the second part is M2, the ratio of the two signal strengths can be M1/M2, M2/M1, (M1-M2)/(M1+M2), ( M2-M1)/(M1+M2), M1/(M1+M2), M2/(M1+M2) and any other calculations involving these two parameters M1 and M2. In other words, when the calculated ratio is a constant or a preset value, it can be obtained that the pressure sensor of the stylus 111 does not sense any pressure. If the pressure sensor is used to sense the pressure of the tip section 230 of the stylus 111, it means that the tip section 230 of the stylus 111 does not touch any objects including the touch panel 120.

In real-world scenarios, it is not uncommon to lose the wireless stylus 111. In addition, it is also necessary to charge the battery of the wireless stylus 111 frequently. In some cases, you want to have one or more wired styluses that are actually connected to the touch system. Using the same virtual random number mechanism, the touch processing device can select the timing of transmitting the signal to the wired stylus, and receive the above-mentioned signal from the touch panel 120. This mechanism can eliminate the synchronization mechanism between the wireless stylus 111 and the touch processing device 130.

Please refer to FIG. 39A, which is a block diagram of a touch system 3900 according to an embodiment of the present invention. The touch system 3900 may include the touch panel 120, the touch processing device 130, the host 140, and a wired stylus 3910. The wired stylus 3910 may include a first element 221 with a variable first impedance Z1, the first impedance Z1 of which reflects the pressure applied to the first element 221, a second element 222 with a fixed second impedance Z2, and a connection The pen tip section 230 output to the first element 221 and the second element 222, and a housing or container for containing the first element 221, the second element 222 and the pen tip section 230. A connecting cable is used to connect the stylus 3910 and the touch processing device 130. The connecting cable may be a cable including a twisted wire and a shield, and it may include a first signal circuit 3911, a second signal circuit 3912, and a third circuit 3913. In one embodiment, the third wire 3913 can be electrically coupled to the housing, and when the user holds the stylus 3910 by hand, the housing can be grounded. In addition, the third line 3913 can be electrically coupled to the ground potential port of the touch processing device 130.

Although only a single wire-only stylus 3910 is shown in FIG. 39A, in some embodiments of the present invention, multiple wire-only stylus 3910 connected to the touch processing device 130 may be included. According to the mechanism provided, most only the wire stylus 3910 can operate at the same time. More importantly, a touch control system according to an embodiment of the present invention may include wireless and limited stylus pens. Those of ordinary skill in the art can understand that when each wireless and wired stylus simultaneously transmits electrical signals encoded with different sets of virtual random numbers, the touch processing device 130 can use a synchronization mechanism to enable the wireless stylus 111 The touch processing device 130 transmits the electric signal while transmitting the electric signal through the wired stylus 3910.

The wired stylus 3910 shown in FIG. 39A does not include switches or buttons. However, a wired stylus 3910 can include one or more pen-on sensors, such as those used to accept user input A switch or a button. In an embodiment, each on-pen sensor may be connected to the touch processing device 130 through one or more circuits in the connection cable. Therefore, the touch processing device 130 can detect the state of the sensor on the pen through the connection cable. For example, the touch processing device 130 can detect whether the eraser button is pressed through one or more circuits connected to the eraser button. However, similar to the embodiment shown in FIGS. 4A and 4B, the wired stylus 3910 may further include a switch and a corresponding element connected in parallel to the first element or the second element. The touch processing device 130 can determine the on/off state of the stylus 3910 according to the signal strength ratio of the two virtual random numbers.

Please refer to FIG. 39B, which is a block diagram of a variant of a touch system 3900 according to an embodiment of the present invention. The stylus 3910 may further include a third switch 3920 and a third element 3930, which are connected in parallel with the first element 221. The third element 3930 may be a resistor and/or a capacitor with a third impedance Z3. When the third switch 3920 is set to a closed circuit by the user of the stylus 3910, the signal driven by the signal circuit 3911 will propagate to the pen tip section 230 through the first element 221 and the third element 3930. Conversely, when the third switch 3920 is set to an open circuit by the user of the stylus 3910, the signal driven by the signal circuit 3911 will propagate to the pen tip section 230 via the first element 221. The signal driven by the signal circuit 3912 will propagate to the pen tip section 230 through the second element 222. After receiving the signals from the signal circuits 3911 and 3912 through the pen tip section 230, the touch processing device 130 can learn the state of the third switch 3920 according to the ratio of the signal strengths from the signal circuits 3911 and 3912. Assuming that the ratio falls in a first interval, the touch processing device 130 determines that the third switch 3920 is in an open state. Assuming that the ratio falls in a second interval, the touch processing device 130 determines that the third switch 3920 is in a closed state. The third impedance value of the third element 3930 can be controlled so that the first interval does not overlap with the second interval. Furthermore, the touch processing device 130 can be based on The ratio value falling in the first interval or the second interval is used to calculate the pressure experienced by the first element 221.

Please refer back to Figure 4A. The active stylus 110 includes two switches SWE and SWB, an eraser capacitor 441 corresponding to the switch SWE, and a barrel capacitor 442 corresponding to the switch SWB. They are arranged in parallel with the first capacitor 321. Although the wired stylus 3910 shown in FIG. 39B only includes a single third switch 3920 and a single corresponding third element 3930, those skilled in the art can understand that the wired stylus 3910 may have more than one set of third elements. The three switch 3920 and its corresponding third element 3930 are connected in parallel to the first element 221.

Please refer to FIG. 39C, which is a block diagram of a variation of a touch system 3900 according to an embodiment of the present invention. The stylus 3910 may further include a fourth switch 3940 and a fourth element 3950, which are connected in parallel to the second element 222. The fourth element 3950 may be a resistor and/or a capacitor with a fourth impedance Z4. When the fourth switch 3940 is set to a closed circuit by the user of the stylus 3910, the signal driven by the signal circuit 3912 will propagate to the pen tip section 230 through the second element 222 and the fourth element 3950. Conversely, when the fourth switch 3940 is set to an open circuit by the user of the stylus 3910, the signal driven by the signal circuit 3912 will propagate to the pen tip section 230 via the second element 222. The signal driven by the signal circuit 3911 will propagate to the pen tip section 230 via the first element 221. After receiving the signals from the signal circuits 3911 and 3912 through the pen tip section 230, the touch processing device 130 can learn the state of the fourth switch 3940 according to the ratio of the signal strengths from the signal circuits 3911 and 3912. Assuming that the ratio falls in a third interval, the touch processing device 130 determines that the fourth switch 3940 is in an open state. Assuming that the ratio falls in a fourth interval, the touch processing device 130 determines that the fourth switch 3940 is in a closed state. The fourth impedance value of the fourth element 3950 can be controlled so that the third interval does not overlap with the fourth interval. Furthermore, the touch processing device 130 may calculate the pressure received by the first element 221 according to the ratio value falling in the third interval or the fourth interval.

Please refer back to Figure 4B. The active stylus 110 includes two switches SWE and SWB, an eraser capacitor 441 corresponding to the switch SWE, and a barrel capacitor 442 corresponding to the switch SWB. They are arranged in parallel with the second capacitor 322. Although the wired stylus 3910 shown in FIG. 39C only includes a single fourth switch 3940 and a single corresponding fourth element 3950, those skilled in the art can understand that the wired stylus 3910 may have more than one set of The four switches and the corresponding fourth element are connected in parallel to the second element 221.

In one embodiment, the touch processing device 130 can simultaneously transmit signals to the stylus 3910 through the signal circuits 3911 and 3912, which encode according to a first virtual random number and a second virtual random number, respectively. Therefore, the touch processing device 130 can simultaneously receive the signals driven by the signal circuits 3911 and 3912 from the touch panel 120. In another embodiment, the touch processing device 130 can transmit signals to the stylus 3910 through the signal circuits 3911 and 3912 in a time-sharing manner, which are respectively coded according to the same virtual random number. Accordingly, the touch processing device 130 can receive the signals driven by the signal circuits 3911 and 3912 from the touch panel 120 in two different time periods, respectively. In these two embodiments, the touch processing device 130 can determine the state of the third switch 3920 or the fourth switch 3940 according to the ratio of the signal strengths driven by the signal circuits 3911 and 3912. Furthermore, the touch processing device 130 can determine the pressure acting on the first element 221 according to the ratio of the signal strengths driven by the signal circuits 3911 and 3912.

Please refer to FIG. 40, which is a block diagram of a touch processing device 130 according to an embodiment of the present invention. Compared with the touch processing device 130 shown in FIG. 34, the touch processing device 130 further includes one or more stylus interfaces 4010 coupled to the connection network 3410. The stylus interface 4010 can be compatible with existing industry standards or a proprietary standard, and includes three circuits 3911, 3912, and 3913 corresponding to one of the stylus 3910. For a stylus 3910, there is a The corresponding stylus interface 4010.

The touch processing device 130 may further include an embedded processor 4040 for generating signals encoded by one or more virtual random numbers corresponding to each stylus 3910. These generated signals can be sent to the drive circuit 3420 for front-end analog processing. The connection network 3410 can receive the settings of the embedded processor 4040 so as to selectively connect the driving circuit 3420 to at least one of the signal circuits 3911 and 3912. Therefore, the signal encoded by the virtual random number can be transmitted to the tip section 230 of the corresponding stylus 3910, which is connected to the stylus interface 4010.

Furthermore, the connection network 3410 can further receive the settings of the embedded processor 4040 so as to connect the sensing circuit 3430 and the electrodes of the touch panel 120. When the tip section 230 of the corresponding stylus 3910 is placed on or near the touch panel, the electrical signal transmitted through the tip section 230 will be received by the sensing circuit 3430 through the electrodes of the touch panel 120. After the front-end analog processing and analog-to-digital conversion are completed, the embedded processor 40404 receives signals from the sensing circuit 3430. Those of ordinary skill in the art can respectively calculate the strength of the received signal corresponding to the signal circuits 3911 and 3912. Based on this, the ratio of signal strength can be calculated. As explained in the previous section, based on the received signal and the ratio, the embedded processor 4040 can determine three parameters: the pressure received by the stylus 3910; the state of a switch of the stylus 3910; And the position where the tip section 230 of the stylus 3910 is in close contact with the control panel 120.

Please refer to FIG. 41A, which is a schematic flowchart of an operation method suitable for a wired stylus according to an embodiment of the present invention. This process is particularly suitable for the wired stylus 3910 shown in FIG. 39A. Unless the causality is explained, the present invention does not limit the execution order of any two steps in FIG. 41A.

Step 4110: Receive a first preamble coded by the first virtual random code by a first element that changes impedance by responding to pressure. As shown in FIG. 39A, the first element 221 of the stylus 3910 receives the first preamble through the signal circuit 3911.

Step 4120: A second preamble coded by a second virtual random number is received by a second element with a fixed impedance. As shown in FIG. 39A, the second element 222 of the stylus 3910 receives the first preamble through the signal circuit 3912. Steps 4110 and 4120 can be executed simultaneously or in time sharing.

Step 4130: The first component transmits the first preamble to a tip segment.

Step 4140: Transmit the second preamble from the second component to the pen tip section. When steps 4110 and 4120 are executed at the same time, steps 4130 and 4140 are also executed at the same time. In other words, all four steps 4110 to 4140 are executed simultaneously.

If the touch processing device 130 is connected to multiple touch pens 3910. A set of two virtual random numbers can be assigned to each stylus 3910. For example, a group containing a combination of the first and second virtual random numbers can be assigned to a first wired stylus 3910, and another group containing a combination of the third and fourth virtual random numbers can be assigned to a second Wired stylus 3910. The flowchart shown in FIG. 41A can be applied to the first and second wired stylus 3910. In other words, two wired styluses can be operated on one touch panel 120 at the same time.

Please refer to FIG. 41B, which is a schematic flowchart of an operation method suitable for a wired stylus according to an embodiment of the present invention. This process is particularly suitable for the wired stylus 3910 shown in FIG. 39B. Unless causality is explained, the present invention does not limit the execution order of any two steps in FIG. 41B. Since the wired stylus 3910 shown in FIG. 39B includes the third switch 3920 and the third element 3930, the flowchart further includes steps 4122 and 4124.

Step 4122: The first preamble is selectively received by a third element, and the third element is connected in parallel with the first element. This selectively receiving step is performed by the third switch 3920 of FIG. 39B.

Step 4124: Selectively transmit the first preamble to a tip segment by the third component. This selective receiving step is also executed by the third switch 3920 of FIG. 39B. Steps 4110, 4120, 4122, and 4124 can be executed at the same time.

Please refer to FIG. 41C, which is a schematic flowchart of an operation method suitable for a wired stylus according to an embodiment of the present invention. This process is particularly applicable to the wired stylus 3910 shown in FIG. 39C. Unless causality is explained, the present invention does not limit the execution order of any two steps in FIG. 41C. Since the wired stylus 3910 shown in FIG. 39C includes the fourth switch 3940 and the fourth element 3950, the flowchart further includes steps 4126 and 4128.

Step 4126: The second preamble is selectively received by a fourth element, and the fourth element is connected in parallel with the second element. This selectively receiving step is performed by the fourth switch 3940 in FIG. 39C.

Step 4128: The fourth component selectively transmits the second preamble to a tip segment. This selective receiving step is also executed by the fourth switch 3940 in FIG. 39C. Steps 4110, 4120, 4126, and 4128 can be executed at the same time.

Please refer to FIG. 42, which is a schematic flowchart of a touch processing device 130 according to an embodiment of the present invention. This process can be applied to the touch processing device 130 shown in FIG. 40, which is used to control a wired stylus 3910 as shown in FIGS. 41A to 41C. For example, the flowchart can be implemented by instructions executed by the embedded processor of the touch processing device 130. Unless a causal relationship is explained, the present invention does not limit the execution order of any two steps in FIG. 42. In process The steps 3630, 3640, 3660, and 3680 contained in the have been explained in the embodiment shown in FIGS. 36A and 36B.

Step 4210: Transmit a first preamble coded according to a first virtual random number to a first circuit of a stylus. For example, the first preamble is generated by the embedded processor 4040, processed by the driving circuit 3420, and transmitted to the signal circuit 3911 through the stylus interface 4010.

Step 4220: Transmit a second preamble coded according to a second virtual random number to a second circuit of the stylus. For example, the second preamble is generated by the embedded processor 4040, processed by the driving circuit 3420, and transmitted to the signal circuit 3912 through the stylus interface 4010. Steps 4210 and 4220 can be performed at the same time.

Optional step 4290: Calculate a switch state of the stylus based on the signal strength ratio of the first part and the second part of the electrical signal.

Please refer to FIG. 43, which is a schematic flowchart of a touch processing device 130 according to an embodiment of the present invention. This process can be applied to the touch processing device 130 shown in FIG. 40, which is used to control a wired stylus 3910 as shown in FIGS. 41A to 41C. For example, the flowchart can be implemented by instructions executed by the embedded processor of the touch processing device 130. Unless a causal relationship is explained, the present invention does not limit the execution sequence of any two steps in FIG. 43. Step 3880 included in the process has been explained in the embodiment shown in FIGS. 38A and 38B. In addition, the optional step 4290 has also been explained in the embodiment shown in FIG. 42.

Step 4310: Transmit a first preamble coded according to a first virtual random number to a first circuit of a stylus within the first time period.

Step 4320: Receive telecommunication through electrodes of a touch panel in the first time period number.

Step 4330: According to the first virtual random code, perform despreading on the first preamble included in the electrical signal received in the first time period.

Step 4340: Transmit a second preamble coded according to a second virtual random number to a second circuit of the stylus within the second time period.

Step 4350: Receive electrical signals through electrodes of a touch panel in the second time period.

Step 4360: According to the second virtual random code, perform despreading on the second preamble included in the electrical signal received in the first time period.

Please refer to FIG. 44, which is a schematic flowchart of a touch processing device 130 according to an embodiment of the present invention. This process can be applied to the touch processing device 130 shown in FIG. 40, which is used to control a wired stylus 3910 as shown in FIGS. 41A to 41C. For example, the flowchart can be implemented by instructions executed by the embedded processor of the touch processing device 130. Unless the causality is explained, the present invention does not limit the execution sequence of any two steps in FIG. 44. Steps 4320 and 4350 have been explained in the embodiment shown in FIG. 43. Step 3880 included in the process has been explained in the embodiment shown in FIGS. 38A and 38B. In addition, the optional step 4290 has also been explained in the embodiment shown in FIG. 42.

Step 4410: Transmit a first preamble coded according to a virtual random number to a first circuit of a stylus within the first time period.

Step 4430: According to the virtual random code, perform despreading on the first preamble included in the electrical signal received in the first time period.

Step 4440: Transmit a code coded according to the virtual random number in the second time period The second preamble is to a second circuit of the stylus.

Step 4460: According to the virtual random code, perform despreading on the second preamble included in the electrical signal received in the second time period.

One of the objectives of the present invention is to provide a stylus pen that emits an electrical signal carrying pressure information, comprising: a first element having an impedance that responds to a pressure, wherein the first element is used to receive a first virtual disorder A first signal encoded by a digital code; a second element with a fixed impedance, wherein the second element is used to receive a second signal encoded with a second virtual random number; and a conductive pen tip segment for: simultaneously Receiving the first signal from the first element and receiving the second signal from the second element; and transmitting an electrical signal including the first signal and the second signal, wherein the first virtual random number is orthogonal to the first signal 2. Virtual chaotic digital.

In one embodiment, in order to provide the first virtual random number and the second virtual random number on the stylus, the stylus further includes a controller for generating the first virtual random number according to the first virtual random number. First signal; generating the second signal according to the second virtual random number; transmitting the first signal to the first element; and transmitting the second signal to the second element.

In one embodiment, in order to transmit the state of the sensor on the stylus, the stylus further includes: at least one sensor connected to the controller. The controller is further used for: generating a data code based on the state of the at least one upper sensor; generating a first data code based on the data code and the first virtual random number; and transmitting the first data code to the first element . The first element is further used for receiving the first data code from the controller. The conductive pen tip section is further used for: receiving the first data code from the first element; and transmitting the first data code.

In one embodiment, in order to transmit the state of the sensor on the stylus, the stylus further includes: at least one sensor connected to the controller. The controller is more used: According to the At least one data code is generated from the state of the upper sensor; a second data code is generated according to the data code and the second virtual random code; and the second data code is transmitted to the second element. The second element is further used for receiving the second data code from the controller. The conductive pen tip section is further used for: receiving the second data code from the second element; and transmitting the second data code.

In one embodiment, in order to synchronize with the receiving program of a touch processing device of a touch panel, the controller is further used to: receive a synchronization signal from an electronic device; and after receiving the synchronization signal, execute The generation step and the transmission step.

In one embodiment, in order to synchronize with the receiving program of the touch processing device of the touch panel close to the stylus, the controller is coupled to the conductive pen tip section to receive the synchronization signal, and the synchronization signal is generated by Emitted from the electrodes of a touch panel of the electronic device.

In one embodiment, in order to avoid the conflict of virtual random numbers when operating multiple stylus on a touch panel, the stylus further includes a man-machine interface for the user to input virtual random numbers, wherein the controller It is further used for receiving a setting command from the man-machine interface, which specifies a combination of the first virtual random number and the second virtual random number.

In one embodiment, in order to provide virtual random number information to the user, the stylus includes one of the following devices connected to the controller to indicate a combination of the first virtual random number and the second virtual random number : A visual effect indicator; and a sound effect indicator.

In one embodiment, for the wired connection between the touch processing device and the wired stylus, the stylus further includes: a first signal circuit coupled to the first element and a touch processing device for Propagating the first signal from the touch processing device to the first element; and a second signal circuit, coupled to the second element and the touch processing device, for propagating the second signal from the touch processing device To the second element.

In one embodiment, in order to provide a switch state to a touch processing device, the stylus further includes: a third switch for receiving the first signal; and a third element with a fixed impedance, coupled to The third switch and the conductive pen tip section, wherein the third switch can be selectively opened or closed. When the third switch is opened and closed, the first signal propagates from the conductive through the third switch and the third element The nib section.

In one embodiment, in order to provide a switch state to a touch processing device, the stylus further includes: a fourth switch for receiving the second signal; and a fourth element with a fixed impedance, coupled to The fourth switch and the conductive pen tip section, wherein the third switch can be selectively opened or closed, and when the fourth switch is closed, the second signal propagates from the conductive through the fourth switch and the fourth element The nib section.

One of the objectives of the present invention is to provide a method for sending an electrical signal carrying pressure information from a stylus, which includes: receiving a first element with an impedance that responds to a pressure encoded with a first virtual random number A first signal; a second element with a fixed impedance receives a second signal encoded with a second virtual random number; a conductive pen tip section simultaneously receives the first signal from the first element and from the second element Receiving the second signal; and transmitting an electrical signal including the first signal and the second signal from the conductive pen tip section, wherein the first virtual random number is orthogonal to the second virtual random number.

In one embodiment, in order to provide the first virtual random number and the second virtual random number on the stylus, the method further includes: generating the first signal according to the first virtual random number; and according to the second virtual random number. The pseudo random code generates the second signal; transmits the first signal to the first element; and transmits the second signal to the second element.

In one embodiment, in order to transmit the state of the sensor on the stylus, the method is more The method includes: generating a data code according to the state of the at least one upper sensor; generating a first data code according to the data code and the first virtual random number; transmitting the first data code to the first element; from the first element Transmitting the first data code to the conductive nib section; and transmitting the first data code from the conductive nib section.

In one embodiment, in order to transmit the state of the sensor on the stylus, the method further includes: generating a data code according to the state of the at least one upper sensor; generating a first data code based on the data code and the second virtual random number Two data codes; transmitting the second data code to the second element; transmitting the second data code from the second element to the conductive nib section; and transmitting the second data code from the conductive nib section.

In one embodiment, in order to synchronize with the receiving process of a touch processing device of a touch panel, the method further includes: receiving a synchronization signal from an electronic device; and after receiving the synchronization signal, performing the generation Step and the transfer step.

In one embodiment, in order to synchronize with the receiving process of the touch processing device of the touch panel close to the stylus, the synchronization signal is sent by an electrode of a touch panel of the electronic device.

In one embodiment, in order to avoid the conflict of virtual random numbers when multiple styluses are operated on a touch panel, the method further includes: receiving a setting command from the man-machine interface, which specifies the first virtual random number. A combination of the number and the second virtual random number.

In one embodiment, in order to provide virtual random number information to the user, the method further includes one of the following steps: making a visual indicator of the stylus indicate the first virtual random number and the second virtual random number A combination of digits; and making a sound indicator of the stylus indicate the combination of the first virtual random number and the second virtual random number.

In one embodiment, for the wired connection between the touch processing device and the wired stylus, the method further includes: receiving the first signal from the touch processing device by a first signal circuit; The circuit propagates the first signal to the first element; a second signal circuit receives the second signal from the touch processing device; and the second signal circuit propagates the second signal to the second element.

In one embodiment, in order to provide a switch state to a touch processing device, the method further includes: selectively receiving the first signal by a third element having a fixed impedance; and selectively receiving the first signal from the third element The first signal is transmitted to the conductive pen tip section.

In one embodiment, in order to provide a switch state to a touch processing device, the method further includes: selectively receiving the second signal by a fourth element having a fixed impedance; and selectively receiving the second signal from the fourth element The second signal is transmitted to the conductive pen tip section.

One of the objectives of the present invention is to provide a touch processing device for receiving an electrical signal carrying pressure information sent by a first stylus, including: a sensing circuit for the control of a touch panel Some electrodes receive the electrical signal; and a processor, coupled to the sensing circuit, for: de-spreading a first preamble of the received signal according to a first virtual random number; according to a second virtual The random code is used to despread a second preamble of the received signal; and the pressure information is calculated according to a first signal strength ratio of a first part and a second part of the received signal, wherein the first part includes The first preamble and the second part include the second preamble, wherein the first virtual random number is orthogonal to the second virtual random number.

In one embodiment, in order to trigger the stylus to synchronously transmit electrical signals, the touch processing device further includes a driving circuit coupled to the electrodes of the touch panel, wherein the processor is further used for: Before the receiving step is executed, make the driving circuit pass through the touch panel The electrodes transmit a lighthouse signal.

In one embodiment, in order to receive the state of the sensor on the stylus, the processor is further configured to: decode the first data code of the received signal according to the first virtual random number, wherein the first data The code represents the state of at least one sensor on the first stylus.

In one embodiment, in order to receive the state of the sensor on the stylus, the processor is further configured to: decode the second data code of the received signal according to the second virtual random number, wherein the second data The code represents the state of at least one sensor on the first stylus.

In one embodiment, in order to correctly receive the state of the sensor on the stylus, the processor is further configured to: decode the first data code of the received signal according to the first virtual random number; Two virtual random numbers decode the second data code of the received signal; and when the first data code is the same as the second data code, determine the data code, wherein the data code represents at least one on the first stylus The state of the sensor.

In one embodiment, in order to receive smoother and more even pressure information in a longer transmission, the first part further includes the first data code, and the second part further includes the second data code.

In one embodiment, in order to synchronize the transmission of the stylus more quickly, the processor is further configured to: couple at least two second electrodes of the touch panel as a synchronization channel, wherein the first preamble and The despreading step of the second preamble is performed on the received signal received by the synchronization channel to obtain a first synchronization message and a second synchronization message, wherein the second electrodes are parallel to each other.

In one embodiment, in order to use the synchronization message to correctly and quickly receive the state of the sensor on the stylus, the processor is further configured to: according to the first virtual random number and the first The synchronization message is used to decode the first data code of the received signal received by the at least one first electrode of the touch panel; according to the second virtual random number and the second synchronization message, at least the signal of the touch panel is The reception signal received by a first electrode decodes the second data code; and when the first data code is the same as the second data code, the data code is determined, wherein the data code represents the first stylus The state of at least one sensor, wherein a plurality of the first electrodes are parallel to each other, and the plurality of first electrodes and the plurality of second electrodes intersect.

In one embodiment, in order to receive electrical signals from multiple stylus pens at the same time, the processor is further configured to: de-spread a third preamble of the received signal according to a third virtual random number; The fourth virtual random code performs de-spreading on a fourth preamble of the received signal; and calculates a second touch according to the ratio of a second signal strength between a third part and a fourth part of the received signal Pressure information of a pen, wherein the third part includes the third preamble, the fourth part includes the fourth preamble, and the first virtual random number, the second virtual random number, and the third virtual The random number and the fourth virtual random number are orthogonal to each other.

In one embodiment, in order to provide a wired connection between a wired stylus and the touch processing device, the touch processing device further includes a stylus interface coupled to a first stylus of the first stylus Signal circuit and a second signal circuit, wherein the processor is coupled to the stylus interface, and is further used for: generating the first preamble according to the first virtual random number; generating the first preamble according to the second virtual random number Two preambles; and respectively transmitting the first preamble and the second preamble to the first signal circuit and the second signal circuit through the stylus interface.

In one embodiment, in order to receive a switch state of the stylus, the processor is further configured to calculate the first signal strength ratio of the first part and the second part of the received signal. A switch state of the stylus.

In one embodiment, in order to connect to multiple wire stylus at the same time, the stylus interface is further coupled to a third signal circuit and a fourth signal circuit of a second stylus. The processor connected to the stylus interface is further used for: generating a third preamble according to a third virtual random number; generating a fourth preamble according to a fourth virtual random number; and through the touch The pen interface respectively transmits the third preamble and the fourth preamble to the third signal circuit and the fourth signal circuit, wherein the first virtual random number, the second virtual random number, and the third virtual random number The number and the fourth virtual random number are orthogonal to each other.

One of the objectives of the present invention is to provide a method for receiving an electrical signal carrying pressure information sent by a first stylus, including: receiving the electrical signal through some electrodes of a touch panel; A virtual random code despreads a first preamble of the received signal; a second preamble of the received signal is despread according to a second virtual random code; and a second preamble of the received signal is despread according to a second virtual random code; The pressure information is calculated by a ratio of a first signal strength between a first part and a second part, wherein the first part includes the first preamble, the second part includes the second preamble, and the first virtual random The number is orthogonal to the second virtual random number.

In one embodiment, in order to trigger the stylus to synchronously transmit electrical signals, the method further includes: before the receiving step is performed, allowing the driving circuit to transmit a beacon signal through the electrodes of the touch panel.

In one embodiment, in order to receive the state of the sensor on the stylus, the method further includes: decoding a first data code of the received signal according to the first virtual random number, wherein the first data code represents The state of at least one sensor on the first stylus.

In one embodiment, in order to receive the state of the sensor on the stylus, the method further includes: decoding the second data code of the received signal according to the second virtual random number, which The second data code indicates the state of at least one sensor on the first stylus.

In one embodiment, in order to correctly receive the state of the sensor on the stylus, the method further includes: decoding the first data code of the received signal according to the first virtual random number; and according to the second virtual The random number decodes the second data code of the received signal; and when the first data code is the same as the second data code, the data code is determined, wherein the data code represents at least one sensor on the first stylus The status of the device.

In one embodiment, in order to receive smoother and more even pressure information in a longer transmission, the first part further includes the first data code, and the second part further includes the second data code.

In one embodiment, in order to synchronize the transmission of the stylus more quickly, the method includes: coupling at least two second electrodes of the touch panel as a synchronization channel, wherein the first preamble and the second The despreading step of the preamble is performed on the received signal received by the synchronization channel to obtain a first synchronization message and a second synchronization message respectively, wherein the second electrodes are parallel to each other.

In one embodiment, in order to use the synchronization message to correctly and quickly receive the state of the sensor on the stylus, the method further includes: according to the first virtual random number and the first synchronization message, the touch The received signal received by at least one first electrode of the panel decodes the first data code; according to the second virtual random number and the second synchronization message, the received signal from at least one first electrode of the touch panel The received signal decodes the second data code; and when the first data code is the same as the second data code, the data code is determined, wherein the data code represents the value of at least one sensor on the first stylus State, wherein a plurality of the first electrodes are parallel to each other, and the plurality of first electrodes and the plurality of second electrodes intersect.

In one embodiment, in order to receive electrical signals from multiple stylus pens at the same time, the method further includes: de-spreading a third preamble of the received signal according to a third virtual random number; and according to a fourth The virtual random number despreads a fourth preamble of the received signal; and calculates the ratio of a second signal strength of a third part and a fourth part of the received signal to a second stylus A pressure information, wherein the third part includes the third preamble, and the fourth part includes the temple two preamble, wherein the first virtual random number, the second virtual random number, and the third virtual random number , And the fourth virtual random number are orthogonal to each other.

In one embodiment, in order to provide a wired connection between a wired stylus and the touch processing device, the method further includes: generating the first preamble according to the first virtual random number; and according to the second virtual The random number generates the second preamble; and the first preamble and the second preamble are respectively transmitted to the first signal circuit and the second signal circuit.

In one embodiment, in order to receive a switch state of the stylus pen, the method further includes: calculating the first touch signal according to the ratio of the first signal strength of the first part and the second part of the received signal A switch state of the pen.

In one embodiment, in order to connect multiple stylus pens at the same time, the method further includes: generating a third preamble based on a third virtual random number for de-spreading; generating a first based on a fourth virtual random number Four preambles for de-spreading; and respectively transmitting the third preamble and the fourth preamble to a third signal circuit and a fourth signal circuit of a second stylus, wherein the first dummy The random number, the second virtual random number, the third virtual random number, and the fourth virtual random number are orthogonal to each other.

One of the objectives of the present invention is to provide a touch system, which includes a touch panel; a first stylus; and for receiving the carrying pressure data sent by the first stylus One of the electrical signals of the telecommunication touch processing device. The touch processing device includes: a sensing circuit for receiving the electrical signal from some electrodes of the touch panel; and a processor coupled to the sensing circuit for: according to a first virtual random number pair Perform despreading on a first preamble of the received signal; perform despreading on a second preamble of the received signal according to a second virtual random code; and perform despreading according to a first part and a first part of the received signal A first signal strength ratio of two parts is used to calculate the pressure information, wherein the first part includes the first preamble, the second part includes the second preamble, and the first virtual random number is orthogonal to the The second virtual random number.

In one embodiment, the stylus includes: a first element having an impedance that reflects a pressure, wherein the first element is used for receiving a first signal encoded with a first virtual random number; and having a fixed impedance A second element, wherein the second element is used to receive a second signal encoded with a second virtual random number; and a conductive pen tip section is used to simultaneously receive the first signal from the first element and The second element receives the second signal; and transmits an electrical signal including the first signal and the second signal, wherein the first virtual random number is orthogonal to the second virtual random number.

One of the objectives of the present invention is to provide a stylus pen that emits an electrical signal carrying pressure information, comprising: a first element having an impedance that responds to a pressure, wherein the first element is used to receive the signal in a first period of time A first signal encoded by a virtual random number; a second element having a fixed impedance, wherein the second element is used to receive a second signal encoded by the virtual random number in a second period of time; and a conductive pen tip section , Which is used to: receive the first signal from the first element in the first period; receive the second signal from the second element in the second period; and transmit the electrical signal containing the first signal in the first period Signal; and transmitting the electrical signal including the second signal in a second period, wherein the first virtual random number is orthogonal to the second virtual random number.

In one embodiment, in order to provide the first virtual random number and the second virtual random number on the stylus pen, the stylus further includes a controller for generating the first virtual random number according to the virtual random number. Signal; generate the second signal according to the virtual random number; transmit the first signal to the first element; and transmit the second signal to the second element.

In one embodiment, in order to transmit the state of the sensor on the stylus, the stylus further includes: at least one sensor connected to the controller. The controller is further used for: generating a data code according to the state of the at least one upper sensor; generating a first data code according to the data code and the virtual random number; and transmitting the first data code to the first element. The first element is further used for receiving the first data code from the controller in the first time period. The conductive pen tip section is further used for: receiving the first data code from the first element; and transmitting the first data code.

In one embodiment, in order to transmit the state of the sensor on the stylus, the stylus further includes: at least one sensor connected to the controller. The controller is further used for: generating a data code based on the state of the at least one upper sensor; generating a second data code based on the data code and the second virtual random code; and transmitting the second data code to the second component . The second element is further used for receiving the second data code from the controller in the second time period. The conductive pen tip section is further used for: receiving the second data code from the second element; and transmitting the second data code.

In one embodiment, in order to synchronize with the receiving program of a touch processing device of a touch panel, the controller is further used to: receive a synchronization signal from an electronic device; and after receiving the synchronization signal, execute The generation step and the transmission step.

In one embodiment, in order to synchronize with the receiving program of the touch processing device of the touch panel close to the stylus, the controller is coupled to the conductive pen tip section to receive the synchronization signal, and the synchronization signal is generated by Emitted from the electrodes of a touch panel of the electronic device.

In one embodiment, in order to avoid the conflict of virtual random numbers when operating multiple stylus pens on a touch panel, the stylus further includes a man-machine interface for the user to input virtual random numbers, wherein the controller It is further used to receive a setting command from the man-machine interface, which specifies the virtual random number.

In one embodiment, in order to provide virtual random number information to the user, the stylus includes one of the following devices connected to the controller to indicate the virtual random number: a visual effect indicator; and a sound effect indicator .

In one embodiment, for the wired connection between the touch processing device and the wired stylus, the stylus further includes: a first signal circuit coupled to the first element and a touch processing device for Propagating the first signal from the touch processing device to the first element; and a second signal circuit, coupled to the second element and the touch processing device, for propagating the second signal from the touch processing device To the second element.

In order to provide a switch state to a touch processing device, the stylus further includes: a third switch for receiving the first signal; and a third element with a fixed impedance, coupled to the third switch and the The conductive nib section, wherein the third switch can be selectively opened or closed. When the third switch is opened and closed, the first signal propagates from the conductive nib section via the third switch and the third element.

In order to provide a switch state to a touch processing device, the stylus further includes: a fourth switch for receiving the second signal; and a fourth element with a fixed impedance, coupled to the fourth switch and the The conductive nib section, wherein the third switch can be selectively opened or closed, and when the fourth switch is opened and closed, the second signal propagates from the conductive nib section via the fourth switch and the fourth element.

One of the objectives of the present invention is to provide a method for sending an electrical signal carrying pressure information from a stylus, comprising: receiving a virtual random number by a first element having an impedance that reacts to a pressure during a first period of time The encoded first signal; a second element with a fixed impedance receives a second signal encoded with the virtual random number in a second period of time; a conductive pen tip section receives from the first element in the first period of time The first signal; the conductive nib section receives the second signal from the second element in the second period; the conductive nib section transmits an electrical signal containing the first signal in the first period; and the conductive nib section transmits an electrical signal containing the first signal in the first period The pen tip section transmits an electric signal including the second signal in the second period.

In one embodiment, in order to provide the virtual random number on the stylus, the method further includes: generating the first signal according to the virtual random number; generating the second signal according to the virtual random number; and transmitting the first signal Signal to the first element; and transmitting the second signal to the second element.

In one embodiment, in order to transmit the state of the sensor on the stylus, the method further includes: generating a data code according to the state of the at least one upper sensor; generating first data based on the data code and the virtual random number Transmitting the first data code to the first element; transmitting the first data code from the first element to the conductive nib section; and transmitting the first data code from the conductive nib section.

In one embodiment, in order to transmit the state of the sensor on the stylus, the method further includes: generating a data code according to the state of the at least one upper sensor; generating second data based on the data code and the virtual random number Transmitting the second data code to the second element; transmitting the second data code from the second element to the conductive nib section; and transmitting the second data code from the conductive nib section.

In one embodiment, in order to synchronize with the receiving process of a touch processing device of a touch panel, the method further includes: receiving a synchronization signal from an electronic device; and after receiving the synchronization signal, performing the generation Step and the transfer step.

In one embodiment, in order to synchronize with the receiving process of the touch processing device of the touch panel close to the stylus, the synchronization signal is sent by an electrode of a touch panel of the electronic device.

In one embodiment, in order to avoid conflicts of virtual random numbers when operating multiple styluses on a touch panel, the method further includes: receiving a setting command from the man-machine interface, which specifies the virtual random numbers.

In one embodiment, in order to provide virtual random number information to the user, the method further includes one of the following steps: making a visual indicator of the stylus to indicate the virtual random number; and making the stylus A sound effect indicator indicates the virtual random number.

In one embodiment, for the wired connection between the touch processing device and the wired stylus, the method further includes: receiving the first signal from the touch processing device by a first signal circuit; The circuit propagates the first signal to the first element; a second signal circuit receives the second signal from the touch processing device; and the second signal circuit propagates the second signal to the second element.

In one embodiment, in order to provide a switch state to a touch processing device, the method further includes: selectively receiving the first signal by a third element having a fixed impedance; and selectively receiving the first signal from the third element The first signal is transmitted to the conductive pen tip section.

In one embodiment, in order to provide a switch state to a touch processing device, the method further includes: selectively receiving the second signal from a fourth element with a fixed impedance; And selectively transmit the second signal to the conductive nib section from the fourth element.

One of the objectives of the present invention is to provide a touch processing device for receiving an electrical signal carrying pressure information sent by a first stylus, including: a sensing circuit for the control of a touch panel Some electrodes receive the electrical signal; and a processor, coupled to the sensing circuit, for: de-spreading a first preamble of the received signal in a first period of time according to a virtual random number; according to The virtual random code despreads a second preamble of the received signal in a second time period; and calculates the first signal strength ratio of a first part and a second part of the received signal The pressure information, wherein the first part includes the first preamble, and the second part includes the second preamble.

In one embodiment, in order to trigger the stylus to synchronously transmit electrical signals, the touch processing device further includes a driving circuit coupled to the electrodes of the touch panel, wherein the processor is further used for: Before the receiving step is executed, the driving circuit is made to transmit a beacon signal through the electrodes of the touch panel.

In one embodiment, in order to receive the state of the sensor on the stylus, the processor is further configured to: decode the first data code of the received signal in the first time period according to the virtual random number, wherein The data code represents the state of at least one sensor on the first stylus.

In one embodiment, in order to receive the state of the sensor on the stylus, the processor is further configured to: decode the second data code of the received signal in the second time period according to the virtual random number, wherein The data code represents the state of at least one sensor on the first stylus.

In an embodiment, in order to correctly receive the state of the sensor on the stylus, the processor is further configured to: decode the first data code of the received signal in the first time period according to the virtual random number ; According to the virtual random number pair in the second period of the second time of the received signal The data code is decoded; and when the first data code is the same as the second data code, the data code is determined, wherein the data code represents the state of at least one sensor on the first stylus.

In one embodiment, in order to receive smoother and more even pressure information in a longer transmission, the first part further includes the first data code, and the second part further includes the second data code.

In one embodiment, in order to synchronize the transmission of the stylus more quickly, the processor is further configured to: couple at least two second electrodes of the touch panel as a synchronization channel, wherein the first preamble and The despreading step of the second preamble is performed on the received signal received by the synchronization channel to obtain a first synchronization message and a second synchronization message, wherein the second electrodes are parallel to each other.

In one embodiment, in order to use the synchronization message to correctly and quickly receive the state of the sensor on the stylus, the processor is further used for: according to the virtual random number and the first synchronization message, the touch The receiving signal received by the at least one first electrode of the panel is decoded for the first data code; the receiving signal received by the at least one first electrode of the touch panel according to the virtual random number and the second synchronization message Signal to decode the second data code; and when the first data code is the same as the second data code, determine the data code, wherein the data code represents the state of at least one sensor on the first stylus, A plurality of the first electrodes are parallel to each other, and the plurality of first electrodes and the plurality of second electrodes intersect.

In one embodiment, in order to receive electrical signals from multiple stylus pens at the same time, the processor is further configured to decode a third preamble of the received signal in a third period according to a second virtual random number. Spread spectrum; despread a fourth preamble of the received signal in a fourth period according to the second virtual random number; and according to a third part and a fourth part of the received signal To calculate a pressure information of a second stylus based on a second signal strength ratio of, wherein the third part includes the third preamble, the fourth part includes the fourth preamble, and the first virtual The random number and the second virtual random number are orthogonal to each other, wherein part of the third time period overlaps with part of the first time period or part of the second time period.

In one embodiment, in order to provide a wired connection between a wired stylus and the touch processing device, the touch processing device further includes a stylus interface coupled to a first stylus of the first stylus Signal circuit and a second signal circuit, wherein the processor is coupled to the stylus interface, and is further used for: generating the first preamble according to the virtual random number; generating the second preamble according to the virtual random number ; Transmit the first preamble to the first signal circuit in the first period through the stylus interface; and transmit the second preamble to the second signal in the second period through the stylus interface Circuit.

In one embodiment, in order to receive a switch state of the stylus, the processor is further configured to calculate the first signal strength ratio of the first part and the second part of the received signal. A switch state of the stylus.

In one embodiment, in order to receive electrical signals from multiple styluses at the same time, the stylus interface is further coupled to a third signal circuit and a fourth signal circuit of a second stylus. The processor is coupled to the stylus interface, and is further used for: generating a third preamble in a third period according to a second virtual random number; and generating a third preamble in a fourth period according to the second virtual random number The fourth preamble; the third preamble is sent to the third signal circuit in the third period through the stylus interface; the fourth preamble is sent to the third signal circuit in the fourth period through the stylus interface In the fourth signal circuit, the first virtual random number and the second virtual random number are orthogonal to each other, and the part of the third period overlaps with the part of the first period or the second period.

One of the objectives of the present invention is to provide a method for receiving an electrical signal carrying pressure information sent by a first stylus, including: receiving the electrical signal from some electrodes of a touch panel; according to a virtual The random code performs de-spreading on a first preamble of the received signal in a first period; according to the virtual random code, a second preamble of the received signal in a second period is de-spread And calculating the pressure information according to a first signal strength ratio of a first part and a second part of the received signal, wherein the first part includes the first preamble, and the second part includes the second preamble code.

In one embodiment, in order to trigger the stylus to synchronously transmit electrical signals, the method further includes: before the receiving step is performed, allowing the driving circuit to transmit a beacon signal through the electrodes of the touch panel.

In one embodiment, in order to receive the state of the sensor on the stylus pen, the method further includes: decoding the first data code of the received signal in the first time period according to the virtual random number, wherein the first data code of the received signal is decoded according to the virtual random number A data code indicates the state of at least one sensor on the first stylus.

In one embodiment, in order to receive the state of the sensor on the stylus pen, the method further includes: decoding the second data code of the received signal in the second period according to the virtual random number, wherein the first The two data codes represent the status of at least one sensor on the first stylus.

In one embodiment, in order to correctly receive the state of the sensor on the stylus, the method further includes: decoding the first data code of the received signal in the first period according to the virtual random number; according to The virtual random number decodes the second data code of the received signal in the second time period; and when the first data code is the same as the second data code, the data code is determined, wherein the data code represents the first data code The state of at least one sensor on the stylus.

In one embodiment, in order to receive a smoother and more even The first part further includes the first data code, and the second part further includes the second data code.

In one embodiment, in order to synchronize the transmission of the stylus more quickly, the method further includes: coupling at least two second electrodes of the touch panel as a synchronization channel, wherein the first preamble and the second electrode The despreading step of the two preambles is performed on the received signal received by the synchronization channel to obtain a first synchronization message and a second synchronization message respectively, wherein the second electrodes are parallel to each other.

In one embodiment, in order to use the synchronization message to correctly and quickly receive the state of the sensor on the stylus, the method further includes: according to the virtual random number and the first synchronization message, The reception signal received by at least one first electrode is decoded for the first data code; the reception signal received by at least one first electrode of the touch panel is decoded according to the virtual random code and the second synchronization message Decoding of the second data code; and when the first data code is the same as the second data code, the data code is determined, wherein the data code represents the state of at least one sensor on the first stylus, and more The first electrodes are parallel to each other, and the plurality of first electrodes intersect with the plurality of second electrodes.

In one embodiment, in order to receive electrical signals from multiple stylus pens at the same time, the method further includes: de-spreading a third preamble of the received signal in a third period according to a second virtual random number ; According to the second virtual random number to despread a fourth preamble of the received signal in a fourth period; and according to a second signal strength of a third part and a fourth part of the received signal Ratio to calculate a pressure information of a second stylus, where the third part includes the third preamble, the fourth part includes the fourth preamble, and the first virtual random number and the second The virtual random numbers are orthogonal to each other, and the part of the third time period is the same as that of the first time period. Part or part of the second time period overlaps.

In one embodiment, in order to provide a wired connection between a wired stylus and the touch processing device, the method further includes: generating the first preamble according to the virtual random number; generating the first preamble according to the virtual random number A second preamble; transmitting the first preamble to the first signal circuit of the first stylus in the first time period; and transmitting the second preamble to the first touch pen in the second time period The second signal circuit of the stylus.

In one embodiment, in order to receive a switch state of the stylus pen, the method further includes: calculating the first touch signal according to the ratio of the first signal strength of the first part and the second part of the received signal A switch state of the pen.

In one embodiment, in order to receive electrical signals from multiple stylus pens at the same time, the method further includes: generating a third preamble according to a second virtual random number in a third period; according to the second virtual random number Generate a fourth preamble in a fourth period; transmit the third preamble to a third signal circuit of a second stylus in the third period; transmit the fourth preamble in the fourth period Code to a fourth signal circuit of the second stylus, wherein the first virtual random number and the second virtual random number are orthogonal to each other, and the part of the third period is the same as that of the first period or the second period Partially overlapped.

One of the objectives of the present invention is to provide a touch system including: a touch panel; a first stylus; and a touch processing device. The touch processing device is used to receive the electrical signal carrying pressure information sent by the first stylus, and includes: a sensing circuit for receiving the electrical signal from some electrodes of the touch panel; and a processing A device, coupled to the sensing circuit, for: despreading a first preamble of the received signal in a first period according to a virtual random code; and according to the virtual random code pair in a second period A second of the received signal The preamble is de-spread; and the pressure information is calculated according to a first signal strength ratio of a first part and a second part of the received signal, wherein the first part includes the first preamble, and the second part Part contains the second preamble.

In one embodiment, the first stylus includes: a first element having an impedance that reflects a pressure, wherein the first element is used for receiving the first signal encoded by the virtual random number in the first time period A second element with a fixed impedance, wherein the second element is used to receive the second signal encoded by the virtual random number in the second period; and a conductive pen tip segment for: in the first period Receive the first signal from the first element; receive the second signal from the second element in the second period; transmit the electrical signal including the first signal in the first period; and transmit the electrical signal including the first signal in the second period The electrical signal of the second signal, wherein the first virtual random number is orthogonal to the second virtual random number.

The above-mentioned embodiments are only used to describe the outline of the present invention, and should not be used to limit the scope of the present invention. A person of ordinary skill in the art can modify the above-mentioned embodiments without departing from the scope of the present invention defined by the scope of the following patent applications.

3610~3880: steps

Claims (26)

A touch processing device for receiving electrical signals carrying pressure information sent by a first stylus, including: A sensing circuit for receiving the electrical signal from some electrodes of a touch panel; and A processor, coupled to the sensing circuit, for: Performing despreading on a first preamble of the received signal in a first period of time according to a virtual random number; Performing despreading on a second preamble of the received signal in a second period of time according to the virtual random code; and The pressure information is calculated according to a first signal strength ratio of a first part and a second part of the received signal, wherein the first part includes the first preamble and the second part includes the second preamble. The touch processing device described in item 1 of the scope of patent application further includes: A driving circuit coupled to the electrodes of the touch panel, The processor is further used for: before the receiving step is executed, the driving circuit transmits a beacon signal through the electrodes of the touch panel. According to the touch processing device described in item 1 of the scope of patent application, the processor is further used for: The first data code of the received signal in the first time period is decoded according to the virtual random number, where the data code represents the state of at least one sensor on the first stylus. According to the touch processing device described in item 1 of the scope of patent application, the processor is further used for: According to the virtual random number, the second data code of the received signal in the second time period is decoded, wherein the data code represents the state of at least one sensor on the first stylus. According to the touch processing device described in item 1 of the scope of patent application, the processor is further used for: Decode the first data code of the received signal in the first time period according to the virtual random code; Decode the second data code of the received signal in the second time period according to the virtual random code; and When the first data code is the same as the second data code, a data code is determined, wherein the data code represents the state of at least one sensor on the first stylus. According to the touch processing device described in claim 5, the first part further includes the first data code, and the second part further includes the second data code. According to the touch processing device described in item 1 of the scope of patent application, the processor is further used for: Coupling at least two second electrodes of the touch panel as a synchronization channel, wherein the de-spreading step of the first preamble and the second preamble is performed on the received signal received by the synchronization channel, To obtain a first synchronization message and a second synchronization message respectively, wherein the second electrodes are parallel to each other. In the touch processing device described in item 7 of the scope of patent application, the processor is further used for: Decoding the first data code of the received signal received by the at least one first electrode of the touch panel according to the virtual random number and the first synchronization message; Decoding the second data code of the received signal received by at least one first electrode of the touch panel according to the virtual random code and the second synchronization message; and When the first data code is the same as the second data code, the data code is determined, The data code represents the state of at least one sensor on the first stylus, A plurality of the first electrodes are parallel to each other, and the plurality of first electrodes and the plurality of second electrodes intersect. According to the touch processing device described in item 1 of the scope of patent application, the processor is further used for: Performing despreading on a third preamble of the received signal in a third period of time according to a second virtual random code; Performing despreading on a fourth preamble of the received signal in a fourth period according to the second virtual random code; and Calculate a pressure information of a second stylus based on the ratio of a second signal strength between a third part and a fourth part of the received signal, wherein the third part includes the third preamble, the fourth part Part contains the fourth preamble, The first virtual random number and the second virtual random number are orthogonal to each other, The part of the third time period overlaps with the part of the first time period or the part of the second time period. The touch processing device described in item 1 of the scope of patent application further includes: A stylus interface, coupled to a first signal circuit and a second signal circuit of the first stylus, The processor is coupled to the stylus interface and is further used for: Generating the first preamble according to the virtual random number; Generating the second preamble according to the virtual random number; Transmitting the first preamble to the first signal circuit in the first period of time through the stylus interface; and The second preamble is transmitted to the second signal circuit in the second period through the stylus interface. According to the touch processing device according to claim 10, the processor is further used to calculate the first touch according to the ratio of the first signal strength of the first part and the second part of the received signal. A switch state of the stylus. The touch processing device according to claim 10, wherein the stylus interface is further coupled to a third signal circuit and a fourth signal circuit of a second stylus, The processor is coupled to the stylus interface and is used for: Generating a third preamble in a third period according to a second virtual random number; Generating a fourth preamble in a fourth period according to the second virtual random number; Transmitting the third preamble to the third signal circuit in the third time period through the stylus interface; and Transmit the fourth preamble to the fourth signal in the fourth period through the stylus interface Circuit, The first virtual random number and the second virtual random number are orthogonal to each other, and the part of the third period overlaps with the part of the first period or the second period. A touch processing method for receiving an electrical signal carrying pressure information sent by a first stylus. The touch processing method includes: Receiving the electrical signal from some electrodes of a touch panel; Performing despreading on a first preamble of the received signal in a first period of time according to a virtual random number; Performing despreading on a second preamble of the received signal in a second period of time according to the virtual random code; And calculating the pressure information according to a first signal strength ratio of a first part and a second part of the received signal, The first part includes the first preamble, and the second part includes the second preamble. The touch processing method described in item 13 of the scope of patent application further includes: Before the receiving step is executed, a driving circuit is made to transmit a beacon signal through the electrodes of the touch panel. The touch processing method described in item 13 of the scope of patent application further includes: According to the virtual random number, the first data code of the received signal in the first period is decoded, wherein the first data code represents the state of at least one sensor on the first stylus. The touch processing method described in item 13 of the scope of patent application further includes: The second data code of the received signal in the second time period is decoded according to the virtual random number, where the second data code represents the state of at least one sensor on the first stylus. The touch processing method described in item 13 of the scope of patent application further includes: Decode the first data code of the received signal in the first time period according to the virtual random code; Decode the second data code of the received signal in the second time period according to the virtual random code; and When the first data code is the same as the second data code, a data code is determined, wherein the data code represents the state of at least one sensor on the first stylus. According to the touch processing method described in claim 17, wherein the first part further includes the first data code, and the second part further includes the second data code. The touch processing method described in item 13 of the scope of patent application further includes: Coupling at least two second electrodes of the touch panel as a synchronization channel, The despreading step of the first preamble and the second preamble is performed on the received signal received by the synchronization channel to obtain a first synchronization message and a second synchronization message, respectively, wherein the The second electrodes are parallel to each other. The touch processing method described in item 19 of the scope of patent application further includes: Decoding the first data code of the received signal received by the at least one first electrode of the touch panel according to the virtual random number and the first synchronization message; Decoding the second data code of the received signal received by at least one first electrode of the touch panel according to the virtual random code and the second synchronization message; and When the first data code is the same as the second data code, the data code is determined, where the data code represents the state of at least one sensor on the first stylus, and a plurality of the first electrodes are parallel to each other, and The plurality of first electrodes intersect with the plurality of second electrodes. The touch processing method described in item 13 of the scope of patent application further includes: Performing despreading on a third preamble of the received signal in a third period of time according to a second virtual random code; Performing despreading on a fourth preamble of the received signal in a fourth period according to the second virtual random code; and Calculating a pressure information of a second stylus according to a ratio of a second signal strength between a third part and a fourth part of the received signal, Where the third part includes the third preamble, and the fourth part includes the fourth preamble, The first virtual random number and the second virtual random number are orthogonal to each other, The part of the third time period overlaps with the part of the first time period or the part of the second time period. The touch processing method described in item 13 of the scope of patent application further includes: Generating the first preamble according to the virtual random number; Generating the second preamble according to the virtual random number; Transmitting the first preamble to the first signal circuit of the first stylus in the first time period; and The second preamble is transmitted to the second signal circuit of the first stylus in the second time period. The touch processing method described in item 22 of the scope of patent application further includes: A switch state of the first stylus is calculated according to the ratio of the first signal strength of the first part and the second part of the received signal. The touch processing method described in item 22 of the scope of patent application further includes: Generating a third preamble in a third period according to a second virtual random number; Generating a fourth preamble in a fourth period according to the second virtual random number; Transmitting the third preamble to a third signal circuit of a second stylus in the third time period; and Transmitting the fourth preamble to a fourth signal circuit of the second stylus in the fourth time period, The first virtual random number and the second virtual random number are orthogonal to each other, and the part of the third period overlaps with the part of the first period or the second period. A touch control system, including: A touch panel; A first stylus; and A touch processing device for receiving the electric pressure information sent by the first stylus Signal, including: A sensing circuit for receiving the electrical signal from some electrodes of the touch panel; and A processor, coupled to the sensing circuit, for: Performing despreading on a first preamble of the received signal in a first period of time according to a virtual random number; Performing despreading on a second preamble of the received signal in a second period of time according to the virtual random code; and Calculating the pressure information according to a first signal strength ratio of a first part and a second part of the received signal, The first part includes the first preamble, and the second part includes the second preamble. The touch control system according to item 25 of the scope of patent application, wherein the first stylus includes: A first element having an impedance that reflects a pressure, wherein the first element is used to receive the first signal encoded with the virtual random code in the first time period; A second element with a fixed impedance, wherein the second element is used to receive a second signal encoded with the virtual random code in the second time period; and A conductive nib section, which is used for: Receiving the first signal from the first element in the first period; receiving the second signal from the second element in the second period; Transmitting the electrical signal including the first signal in the first period; and The electrical signal including the second signal is transmitted in the second period.

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