TWI775237B - Stylus and operating method thereof for transmitting electrical signals carrying pressure information - Google Patents

Abstract

A stylus for transmitting electrical signals carrying pressure information, comprising: a first component with variable impedance reflecting a pressure, wherein the first component is configured for receiving first signals encoded by a pseudo-random number (PN) code in a first time period; a second component with fixed impedance, wherein the second component is configured for receiving second signals encoded by the PN code in a second time period; and a conductive tip section configured for: receiving the first signals from the first component in the first time period; receiving the second signals from the second component in the second time period; transmitting electrical signals which is composed of the first signals in the first time period; and transmitting electrical signals which is composed of the second signals in the second time period.

Description

Stylus pen for sending electrical signal carrying pressure information and operation method

The present invention relates to a stylus, and more particularly, to a stylus that emits electrical signals carrying pressure information and an operating method.

The touch panel or touch screen is an important modern human-machine interface. In addition to detecting approaching or contacting the human body, the touch panel is also used to detect the approaching pen-like object or the tip of the stylus, so as to facilitate The user can precisely control the trajectory of the touch of the pen tip.

The pen-like object can use the tip of the pen to actively send out electrical signals, and is referred to herein as an active stylus. When the pen tip is in close contact with the touch panel, the electrodes on the touch panel are affected by the electrical signal and have an electromagnetic response. By detecting the corresponding electromagnetic response of the electrical signal, it is possible to detect that a stylus is approaching the sensing electrode, and to know the relative position of the stylus and the touch panel.

Accordingly, there is an urgent need for an active stylus that can actively and accurately send out electrical signals under pressure.

It is clear from the above description that the prior art still suffers from disadvantages. In order to solve the above problems, long-term efforts have been unsuccessful. Ordinary products and methods cannot provide appropriate structures and methods. Therefore, the industry needs a new technology to solve the above problems.

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

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 responsive to a pressure, wherein the first element is used to receive a first virtual disturbance a digitally encoded first signal; a second element having a fixed impedance, wherein the second element is used to receive a second signal encoded with a second virtual random number; and a conductive tip segment for: simultaneously receiving the first signal from the first element and 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 Two virtual random numbers.

In one embodiment, in order to provide the first virtual random number and the second virtual random number on the stylus, the touch pen further includes a controller for: generating the first virtual random number according to the first virtual random number generating the second signal according to the second virtual random code; 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 comprises: at least one sensor on the pen connected to the controller. The controller is further used for: generating a data code according to the state of the at least one-on-one sensor; generating a first data code according to the data code and the first virtual random code; 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 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 comprises: at least one sensor on the pen connected to the controller. The controller is further used for: generating a data code according to the state of the at least one-on-one sensor; according to the data code and the second virtual random code generating a second data code; and transmitting the second data code to the second element. The second element is further used for: receiving the second data code from the controller. The conductive 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 a receiving program of a touch processing device of a touch panel, the controller is further configured to: receive a synchronization signal from an electronic device; and after receiving the synchronization signal, execute The generating step and the transmitting step.

In one embodiment, in order to synchronize with the receiving process of the touch processing device of the touch panel approached by the stylus, the controller is coupled to the conductive pen tip section to receive the synchronization signal, and the synchronization signal is composed of It is emitted from 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 human-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 an audio effect indicator.

In one embodiment, for 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 The touch pen 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 tip section, wherein the third switch can be selectively Open or closed, when the third switch is closed, the first signal propagates from the conductive tip section through the third switch and the third element.

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 The fourth switch and the conductive tip section, wherein the third switch can be selectively opened or closed, when the fourth switch is closed, the second signal propagates from the conductive through the fourth switch and the fourth element Nib segment.

One of the objectives of the present invention is to provide a method for sending an electrical signal carrying pressure information from a stylus pen, comprising: receiving, by a first element having an impedance responsive to a pressure, an electrical signal encoded with a first virtual random number a first signal; a second signal encoded with a second virtual random number is received by a second element with a fixed impedance; the first signal is simultaneously received from the first element and from the second element by a conductive tip section receiving the second signal; and transmitting an electrical signal including the first signal and the second signal by the conductive 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 comprises: generating the first signal according to the first virtual random number; according to the second virtual random number The virtual 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 further includes: generating a data code according to the state of the sensor on the at least one pen; generating a data code according to the data code and the first A virtual random number generates a first data code; transmits the first data code to the first element; transmits the first data code from the first element to the conductive tip segment; and transmits the first data from the conductive tip segment code.

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 sensor on the pen; generating a first random number according to the data code and the second virtual random code. two data codes; transmitting the second data code to the second element; transmitting the second data code from the second element to the conductive pen tip segment; and transmitting the second data code from the conductive pen tip segment.

In one embodiment, in order to synchronize with a 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 generating 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 to which the stylus pen approaches, the synchronization signal is sent by electrodes of a touch panel of the electronic device.

In one embodiment, in order to avoid the conflict of virtual random numbers when operating a plurality of stylus pens on a touch panel, the method further includes: receiving a setting command from the human-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 the virtual random number information to the user, the method further includes one of the following steps: making a visual effect indicator of the stylus indicate the first virtual random number and the second virtual random number a combination of numbers; and a sound effect indicator of the stylus to indicate the combination of the first virtual random number and the second virtual random number.

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

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 by the third element The first signal is transmitted to the conductive tip segment.

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 by the fourth element The second signal is transmitted to the conductive tip segment.

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, comprising: a sensing circuit for sensing a touch panel from a touch panel. some electrodes receive the electrical signal; and a processor, coupled to the sensing circuit, for: despreading a first preamble of the received signal according to a first virtual random code; Despreading a second preamble of the received signal with 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, wherein the first part includes The first preamble, the second part includes 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 transmit electrical signals synchronously, the touch processing device further includes a driving circuit coupled to the electrodes of the touch panel, wherein the processor is further configured to: Before the receiving step is performed, the driving circuit is made to transmit a lighthouse 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 according to the first virtual random code, 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 code, 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 code; Decoding the second data code of the received signal with two virtual random codes; and determining a data code when the first data code is the same as the second data code, wherein the data code represents at least one Status of the sensor.

In one embodiment, in order to receive smoother and more average 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 an 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 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 respectively, wherein the second electrodes are parallel to each other.

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

In one embodiment, in order to simultaneously receive electrical signals from multiple stylus pens, the processor is further configured to: despread a third preamble of the received signal according to a third virtual random code; despreading a fourth preamble of the received signal with a fourth virtual random code; and calculating a second touch according to a ratio of a second signal strength of a third part and a fourth part of the received signal A pressure information of the pen, wherein the third part includes the third preamble, the fourth part includes the fourth preamble, wherein the first virtual random number, the second virtual random number, the third virtual random number 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 The 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 code; generating the first preamble according to the second virtual random code two preambles; and respectively transmitting the first preamble and the second preamble to the first signal circuit and the second signal circuit through the touch pen interface.

In one embodiment, in order to receive an on/off state of the stylus, the processor is further configured to: calculate the first signal strength ratio according to 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 wired styluses simultaneously, the stylus The interface is further coupled to a third signal circuit and a fourth signal circuit of a second touch pen. The processor connected to the stylus interface is further configured to: generate a third preamble according to a third virtual random number; generate a fourth preamble according to a fourth virtual random number; and through the touch The pen interface transmits the third preamble and the fourth preamble to the third signal circuit and the fourth signal circuit respectively, 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 first preamble of the received signal is despread by a virtual random code; 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 The pressure information is calculated by a first signal strength ratio of a first part and a second part, wherein the first part includes the first preamble, the second part includes the second preamble, wherein the first virtual random The number is orthogonal to the second virtual random number.

In one embodiment, in order to trigger the stylus to transmit electrical signals synchronously, the method further includes: before the receiving step is performed, causing the driving circuit to transmit a lighthouse 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 code, 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 a second data code of the received signal according to the second virtual random code, wherein the second data 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 method further includes: decoding the first data code of the received signal according to the first virtual random code; Decoding the second data code of the received signal with random code; and when the first data code is the same as the second data code, determining a data code, wherein the data code represents at least one sensor on the first stylus state of the device.

In one embodiment, in order to receive smoother and more average 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 step of despreading 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 receive the state of the sensor on the stylus correctly and quickly, 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 code and the second synchronization message, the received signal received by at least one first electrode of the touch panel is decoded; The received signal decodes the second data code; and when the first data code is the same as the second data code, determines a data code, wherein the data code represents the data of at least one sensor on the first stylus. A state in which a plurality of the first electrodes are parallel to each other, and the plurality of first electrodes meet the plurality of second electrodes.

In one embodiment, in order to receive electrical signals from multiple styluses simultaneously, the method Further comprising: despreading a third preamble of the received signal according to a third virtual random code; despreading a fourth preamble of the received signal according to a fourth virtual random code; and A pressure information of a second stylus is calculated according to a second signal strength ratio of a third part and a fourth part of the received signal, wherein the third part includes the third preamble, the fourth The part includes the second preamble, wherein the first virtual random number, the second virtual random number, 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; generating the first preamble according to the second virtual generating the second preamble by random code; and respectively transmitting the first preamble and the second preamble to the first signal circuit and the second signal circuit.

In one embodiment, in order to receive a switch state of the stylus, the method further includes: calculating 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 pen.

In one embodiment, in order to connect multiple line styluses at the same time, the method further includes: generating a third preamble according to a third virtual random number for despreading; generating a first random number according to a fourth virtual random number. Four preambles for despreading; 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 virtual 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 including a touch panel; a first stylus; and one of the electrical signals for receiving pressure information sent by the first stylus 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: despreading a first preamble of the received signal according to a first virtual random code ; despread a second preamble of the received signal according to a second virtual random code; and calculate 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, the second part includes the second preamble, and the first virtual random number is orthogonal to the second virtual random number.

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

In one embodiment, in order to provide the first virtual random number on the stylus with For the second virtual random number, the stylus further includes a controller for: generating the first signal according to the virtual random number; generating the second signal according to the virtual random number; transmitting the first signal to the first signal an 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 comprises: at least one sensor on the pen connected to the controller. The controller is further used for: generating a data code according to the state of the at least one-on-one sensor; generating a first data code according to the data code and the virtual random code; 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 during the first period. The conductive 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 comprises: at least one sensor on the pen connected to the controller. The controller is further configured to: generate a data code according to the state of the at least one-on-one sensor; generate a second data code according to the data code and the second virtual random code; and transmit the second data code to the second element . The second element is further used for: receiving the second data code from the controller during the second period. The conductive 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 a receiving program of a touch processing device of a touch panel, the controller is further configured to: receive a synchronization signal from an electronic device; and after receiving the synchronization signal, execute The generating step and the transmitting step.

In one embodiment, in order to synchronize with the receiving process of the touch processing device of the touch panel approached by the stylus, the controller is coupled to the conductive pen tip section to receive the synchronization signal, and the synchronization signal is composed of It is emitted from electrodes of a touch panel of the electronic device.

In one embodiment, in order to avoid operating multiple styluses on a touch panel To avoid the conflict of virtual random numbers, the touch pen further includes a human-machine interface for the user to input the virtual random numbers, wherein the controller is further used for receiving a setting command from the human-machine interface, which specifies the virtual random numbers.

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 an audio effect indicator .

In one embodiment, for 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 having a fixed impedance, coupled to the third switch and the The conductive tip segment, wherein the third switch can be selectively opened or closed, when the third switch is closed, the first signal propagates from the conductive tip segment 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 having a fixed impedance, coupled to the fourth switch and the The conductive tip segment, wherein the third switch can be selectively opened or closed, when the fourth switch is closed, the second signal propagates from the conductive tip segment via the fourth switch and the fourth element.

One of the objectives of the present invention is to provide a carrying pressure from a stylus pen A method for electrical signals of information, comprising: receiving a first signal encoded with a virtual random code by a first element having an impedance reflecting a pressure in a first period; receiving a first signal with a fixed impedance in a second period The second element receives the second signal encoded with the virtual random number; the first signal is received from the first element by a conductive tip segment during the first period; the conductive tip segment receives the first signal during the second period from the first element The second element receives the second signal; the electrical signal including the first signal is transmitted by the conductive tip segment during the first period; and the electrical signal including the second signal is transmitted by the conductive tip segment during 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; transmitting the first signal 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 method further includes: generating a data code according to the state of the sensor on the at least one pen; generating first data according to 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 tip section; and transmitting the first data code from the conductive tip 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 sensor on the at least one pen; generating second data according to 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 tip section; and transmitting the second data code from the conductive tip section.

In one embodiment, in order to interface with a touch processing device of a touch panel To receive program synchronization, the method further includes: receiving a synchronization signal from an electronic device; and after receiving the synchronization signal, performing the generating step and the transmitting step.

In one embodiment, in order to synchronize with the receiving process of the touch processing device of the touch panel to which the stylus pen approaches, the synchronization signal is sent by electrodes of a touch panel of the electronic device.

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

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

In one embodiment, for 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; receiving the first signal from the first signal The circuit propagates the first signal to the first element; receives the second signal from the touch processing device by a second signal circuit; and propagates the second signal to the second element by the second signal circuit.

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 by the third element The first signal is transmitted to the conductive tip segment.

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 by the fourth element The second signal is transmitted to the conductive tip segment.

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, comprising: a sensing circuit for sensing a touch panel from a touch panel. some electrodes receive the electrical signal; and a processor coupled to the sensing circuit for: despreading a first preamble of the received signal in a first time period according to a virtual random code; The virtual random code despreads a second preamble of the received signal in a second period; and calculates the received signal according to a first signal strength ratio of a first part and a second part of the received signal 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 transmit electrical signals synchronously, the touch processing device further includes a driving circuit coupled to the electrodes of the touch panel, wherein the processor is further configured to: Before the receiving step is performed, the driving circuit is made to transmit a lighthouse 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 period according to the virtual random code, 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 period according to the virtual random code, wherein The data 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 during the first period according to the virtual random code ; decode the second data code of the received signal during the second period according to the virtual random code; and determine data when the first data code is the same as the second data code code, wherein the data code represents the state of at least one sensor on the first touch pen.

In one embodiment, in order to receive smoother and more average 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 an 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 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 respectively, wherein the second electrodes are parallel to each other.

In one embodiment, in order to use the synchronization message to receive the state of the sensor on the stylus correctly and quickly, the processor is further configured to: according to the virtual random number and the first synchronization message, the touch The first data code is decoded by the received signal received by at least one first electrode of the panel; the received 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 the second data code with a signal; and determining a data code when the first data code is the same as the second data code, wherein the data code represents the state of at least one sensor on the first stylus, The plurality of 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 simultaneously receive electrical signals from a plurality of stylus pens, the processor is further configured to: decode a third preamble of the received signals in a third period of time 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 code; and according to a third part of the received signal and a second part of a fourth part The signal strength ratio is used to calculate a pressure information of a second stylus, wherein the third part The third part includes the third preamble, the fourth part includes the fourth preamble, wherein the first virtual random number and the second virtual random number are orthogonal to each other, wherein the third period part and the first Portions of the periods or portions of the second period overlap.

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 A 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 during the first period through the stylus interface; and transmit the second preamble to the second signal through the stylus interface during the second period circuit.

In one embodiment, in order to receive an on/off state of the stylus, the processor is further configured to: calculate the first signal strength ratio according to 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 simultaneously receive electrical signals from multiple stylus pens, 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 configured to: generate a third preamble according to a second virtual random number in a third period; generate a fourth period according to the second virtual random number the fourth preamble; the third preamble is sent to the third signal circuit through the touch pen interface in the third period; the fourth preamble is sent to the fourth time period through the touch pen interface The fourth signal circuit, wherein the first virtual random number and the second virtual random number are orthogonal to each other, wherein a portion of the third period overlaps with the first period or a portion of the second period.

One of the objectives of the present invention is to provide a device for receiving a first touch pen The method for sending out an electrical signal carrying pressure information includes: receiving the electrical signal from some electrodes of a touch panel; performing a first preamble of the received signal in a first period of time according to a virtual random code despreading spectrum; despreading a second preamble of the received signal in a second time period according to the virtual random code; and a first signal according to a first part and a second part of the received signal The pressure information is calculated using an intensity ratio, 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 transmit electrical signals synchronously, the method further includes: before the receiving step is performed, causing the driving circuit to transmit a lighthouse 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 the first data code of the received signal in the first period according to the virtual random code, wherein the first data code is 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, the method further comprises: decoding the second data code of the received signal in the second period according to the virtual random code, wherein the first The two data codes represent 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 in the first period according to the virtual random code; The virtual random code decodes a second data code of the received signal during the second period; and when the first data code is the same as the second data code, determines a data code, 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 smoother and more average 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. 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 first 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 receive the state of the sensor on the stylus correctly and quickly, the method further includes: according to the virtual random number and the first synchronization message, the touch panel The first data code is decoded on the received signal received by at least one first electrode; and the received signal received by at least one first electrode on the touch panel is decoded according to the virtual random code and the second synchronization message. Decoding the second data code; and determining a data code when the first data code is the same as the second data code, wherein the data code represents the state of at least one sensor on the first stylus, wherein many The strips of the first electrodes are parallel to each other, and the strips of first electrodes meet the strips of second electrodes.

In one embodiment, in order to simultaneously receive electrical signals from multiple stylus pens, the method further includes: despreading a third preamble of the received signal in a third period of time according to a second virtual random code ; despread a fourth preamble of the received signal of a fourth period according to the second virtual random code; and according to a second signal strength of a third part and a fourth part of the received signal A pressure information of a second stylus is calculated proportionally, wherein the third part includes the third preamble, the fourth part includes the fourth preamble, wherein the first virtual random number and the second The virtual random numbers are orthogonal to each other, wherein a portion of the third period overlaps with a portion of the first period or a portion of the second period.

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 second preamble; transmitting the first preamble to the first signal circuit of the first stylus during the first period; and transmitting the second preamble to the first touch during the second period The second signal circuit of the control pen.

In one embodiment, in order to receive a switch state of the stylus, the method further includes: calculating 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 pen.

In one embodiment, in order to simultaneously receive electrical signals from multiple stylus pens, the method 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; transmitting the third preamble to a third signal circuit of a second stylus in the third period; transmitting 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, wherein the part of the third period is the same as that of the first period or the second period Partially overlapping.

One of the objectives of the present invention is to provide a touch system including: a touch panel; a first touch pen; and a touch processing device. The touch processing device is used for receiving an 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; a second period according to the virtual random code performing despreading on a second preamble of the received signal; and according to a first part and a second part of the received signal The pressure information is calculated using a first signal strength ratio, wherein the first part includes the first preamble, and the second part includes the second preamble.

In one embodiment, the first stylus includes: a first element having an impedance responsive to a pressure, wherein the first element is used to receive a first signal encoded with the virtual random code during the first period of time ; a second element having a fixed impedance, wherein the second element is used to receive a second signal encoded with the virtual random code during the second period; and a conductive tip segment for: during the first period The first signal is received from the first element; the second signal is received from the second element during the second period; the electrical signal including the first signal is transmitted during the first period; and the electrical signal including the first signal is transmitted during 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 merely an outline of the techniques of the present invention. The preferred embodiments of the present invention provided below and the accompanying drawings may enable those of ordinary skill in the art to better understand the objects, features and advantages described in the present invention, and to enable those skilled in the art to implement the present invention based on these descriptions.

100: Touch System

110: Messenger

111: The first stylus

112: Second stylus

120: touch panel

121: The first electrode

122: Second electrode

130: Touch processing device

140: host

211: First signal source

212: Second signal source

221: The first element

222: Second element

230: Nib Segment

321: first capacitor

322: second capacitor

441: Eraser Capacitor

442: Pen Capacitor

523: Ring capacitor

550: Ring electrode

551: Ring electrode lead

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: First Metal Plate

1110A: First metal plate A

1110B: First metal plate B

1120: Second metal plate

1120A: Second metal plate A

1120B: Second metal plate B

1130: Third metal plate

1130A: Third metal plate A

1130B: Third metal plate B

1140: Lifting elements or ramps

1150: Support element

1970: Movable Elements

1971: Front movable element

1972: Rear Movable Elements

1973: Insulating film

1974: Compressible Conductors

1975: Conductor Substrate

1976: Base Wire

1977: Moving Element Wire

1978: Elastic element

1979: Compressible insulating materials

1980: Shell

1990: Printed circuit boards

2110: Pressure Sensor

2120: Control Unit

2210: Pressure Sensor

2220: Control Unit

2610~2650: Steps

2900: Detection of Lighthouse Signaling System

2910: Receive Electrode

2920: Detection Module

2921: Analog Front End

2922: Comparator

2930: Demodulator

3200: Method for Solving Spread Spectrum Signals

3210~3250: Steps

3310: Controller

3311: Signal

3312: Signal

3320: Clock signal module

3330: Battery

3410: connect to the network

3420: Driver 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: First Signal Circuit

3912: Second Signal Circuit

3913: Third Circuit

3920: The third switch

3930: Third element

3940: Fourth switch

3950: Fourth element

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

A more complete understanding of the present invention can be obtained by reading the following detailed description of the preferred embodiments, and by referring to the accompanying drawings.

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

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

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

6 is a schematic flowchart of a method for determining a sensor or a sensing value of an active stylus tip 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.

8 is a schematic flowchart of a method for determining a sensing value of a pen tip of a transmitter according to an embodiment of the present invention.

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

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

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

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

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

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

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

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

FIG. 12 is a reduced representation 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.

Figure 16B is a variation of the embodiment shown in Figure 16A.

17A and 17B are schematic structural diagrams 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 view of the center section of the force-induced capacitor of the transmitter 110 and its structure.

FIG. 19B is a schematic cross-sectional view after the structures shown in FIG. 19A are assembled.

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

FIG. 19D is an exploded schematic view 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 view of the center section of the force-induced capacitor and its structure of the transmitter 110 according to an embodiment of the present invention.

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

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

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

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

24A and 24B are schematic structural diagrams 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 a calculated tilt angle according to an embodiment of the present invention.

FIG. 27 shows an embodiment in which the display interface reflects the aforementioned inclination angle and/or pressure stroke.

FIG. 28 is another embodiment in which the aforementioned inclination angle and/or pressure stroke is reflected on the display interface.

FIG. 29 is a schematic block diagram of a lighthouse signal detection system according to an embodiment of the present invention.

FIG. 30 is a waveform diagram of the spread spectrum technique.

FIG. 31 is a variation of the embodiment shown in FIG. 1 .

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

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

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

FIG. 35 is a schematic flowchart of the implementation of the controller shown in FIG. 33 according to an embodiment of the present invention.

FIG. 36A is a schematic flowchart of an embedded processor according to an embodiment of the present invention.

FIG. 36B is a schematic flowchart of an embedded processor according to an embodiment of the present invention.

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

FIG. 37B is a schematic flow chart implemented by the controller shown in FIG. 33 according to an embodiment of the present invention.

FIG. 38A is a schematic flowchart of an embedded processor according to an embodiment of the present invention.

FIG. 38B is a schematic flowchart of an implementation of an embedded processor according to an embodiment of the present invention.

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

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

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

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

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

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

41C is a schematic flowchart of an operation method applicable to a wired stylus according to an embodiment of the present invention.

FIG. 42 is a schematic flowchart of a touch processing device according to an embodiment of the present invention.

FIG. 43 is a schematic flowchart of 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 embodiments, the scope of the present invention is not limited by these embodiments, but is subject to the scope of the patent application thereafter. In order to provide a clearer description and enable those skilled in the art to understand the content of the present invention, the various parts in the drawings are not drawn according to their relative dimensions, and some dimensions or other relative dimensions may be highlighted. It is exaggerated when it comes out, and the irrelevant details are not completely drawn, in order to keep the illustration concise.

Please refer to FIG. 1 , which is a schematic diagram of a touch control system 100 according to an embodiment of the present invention. The touch system 100 includes at least a transmitter 110 , a touch panel 120 , a touch processing device 130 and a host 140 . In this embodiment, the transmitter 110 is an active stylus that can actively send out electrical signals as an example, but the actual implementation is not limited to this. The touch control system 100 may include a plurality of transmitters 110 . The above-mentioned touch panel 120 is formed on a substrate, and the touch panel 120 may be a touch screen, and 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 capacitively coupled sensing points are formed at the overlapping positions of the two. The first electrodes 121 and the second electrodes 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 the driving voltage (the voltage of the driving signal) to the first electrodes 121 and measure the signal changes of the second electrodes 122 to know that there is an external conductive object approaching or contacting (referred to as proximity for short). ) the touch panel 120 . this field Those skilled in the art can understand that the above-mentioned touch processing device 130 can detect proximity events and proximity objects by means of mutual capacitance or self-capacitance, which will not be described in detail here. In addition to the detection methods of mutual capacitance or self-capacitance, the touch processing device 130 can also detect the electrical signal sent by the transmitter 110 , so as to detect the relative relationship between the transmitter 110 and the touch panel 120 . Location. 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 frequency of the signal from the transmitter 110 and the driving signal of the mutual capacitance or the self-capacitance are different, and they are not resonant waves, the touch processing device 130 can distinguish the signal from the transmitter 110 from the mutual capacitance or the mutual capacitance, respectively. self-capacitance signal. In another embodiment, the touch panel 120 may be a surface capacitive touch panel with one electrode at four corners or four sides, respectively, and the touch processing device 130 measures signal changes of the four electrodes respectively or simultaneously to obtain The relative positions of the transmitter 110 and the touch panel 120 are detected.

Also included in FIG. 1 is a host 140, which may be a central processing unit, or a main processor in an embedded system, or other forms of computers. In one embodiment, the touch control system 100 may be a tablet computer, and the host 140 may be a central processing unit executing a tablet computer program. For example, the tablet computer executes an Android (Android) operating system, and the host 140 is an ARM (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 a proximity event that occurs on the touch panel 120 .

Since the electrical signal needs to be actively sent out, the transmitter 110 or the active stylus needs a power supply to supply the energy required to send the electrical signal. In one 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 a capacitor, especially a super capacitor (Ultra-capacitor or Super-capacitor), for example, a power There are three types of supercapacitors: EDLC (Electrical Double Layered Capacitor), Pseudocapacitor, and Hybrid Capacitor. The charging time of the supercapacitor is on the order of seconds, and in the embodiment of the present invention, the discharging time of the supercapacitor is on the order of hours. In other words, the active pen can be used for a long time with only a short charge.

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

The above-mentioned lighthouse signal can be sent out by using a plurality of first electrodes 121 and/or second electrodes 122 . In one embodiment, when the first electrode 121 is used to send out the driving signal for mutual capacitance touch detection, the frequency of the driving signal and the lighthouse signal are different, and are not the resonant waves of each other. Therefore, the lighthouse signal can be simultaneously sent out during the period of sending the driving signal, that is, the mutual capacitance touch detection and the electrical signal detection can be carried out at the same time. In another embodiment, the driving signal and the lighthouse signal may be sent out in turn, that is, the mutual capacitance touch detection and the electrical signal detection are performed in time division. The frequency of the driving signal and the lighthouse signal may be the same or different.

In one embodiment, in order to enable the transmitter 110 to detect the lighthouse signal farther away from the touch panel 120 , the touch processing device 130 can be made to detect all the first electrodes 121 on the touch panel 120 and the touch panel 120 . The second electrodes 122 send out driving signals at the same time, so that the sum total of the signal strengths sent by the touch panel 120 is maximized.

Please refer to FIG. 2 , which is a transmitter 110 according to an embodiment of the present invention Schematic diagram of the interior. 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 pen 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 sent by 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 a square wave signal, a sine wave signal, or a pulse width modulation (Pulse Width Modulation) signal. 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 resonant 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 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 through the first element 221 having the first impedance Z1 and the second element 222 having the second impedance Z2 and then fed into the pen tip section 230 . The above-mentioned first element 221 and second element 222 may be impedances caused by resistive elements, inductive elements, capacitive elements (eg, 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 may be variable, and correspond to the variation 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 corresponds to the variation of a certain sensor. In one embodiment, the sensor may be a retractable elastic pen tip, and the above-mentioned first impedance Z1 may correspond to the stroke of the elastic pen tip or varies with the degree of stress. In some examples, the above-mentioned first impedance Z1 linearly corresponds to a change in a physical quantity of the sensor. But in another example, the above-mentioned 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, the second element 222 is an inductor, and vice versa. For another example, the first element 221 is an inductor, 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 variable capacitance, or an inductor with variable inductance. When one of the first impedance Z1 and the second impedance Z2 is invariable, it can be set by using existing electronic components, such as a general fixed resistance resistance element, a fixed capacitance capacitance element or a fixed inductance value inductive element.

In one embodiment, the first element 221 may be a force sensing resistor (FSR, force sensing resistor), the resistance value of which changes 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 other conditions being the same, 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 in the electrical signal emitted by the pen tip 230 will be equal to 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 suspended above the touch panel 120, the pen tip section 230 has not been displaced or subjected to any force, so among the electrical signals detected by the touch panel 120, the signal part of the first frequency f1 The ratio of the intensity M1 to the intensity M2 of the signal portion of the second frequency f2 is a fixed value or a predetermined value. Or in another embodiment, (M1-M2)/(M1+M2) or (M2-M1)/(M1+M2) The ratio is also a fixed or preset value. Besides, the pressure value can also be represented by the ratio of M1/(M1+M2) or M2/(M1+M2). In addition to the above-mentioned four ratios, those of ordinary skill in the art can also think of any ratio involving the intensities M1 and M2 to be substituted. In other words, when the proportional value is detected as the fixed value, it can be determined that the sensor does not sense any change in the physical quantity. In one embodiment, the transmitter 110 does not touch the touch panel 120 .

After the transmitter 110 contacts 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 according to the stroke or the force of the pen tip section 230, so that the intensity M1 of the signal part of the first frequency f1 and the intensity of the signal part of the second frequency f2 in the electrical signal The ratio of M2 varies, other than the above-mentioned fixed or preset value. The touch panel 120 can utilize the above relationship to generate corresponding sensing values according to the ratio. The aforementioned fixed value or preset value is not limited to a single value, but may also be a range within an error tolerance.

It should be noted that the ratio does not necessarily have a linear relationship with the sensing value. Furthermore, the sensed value may not necessarily have a linear relationship with the displacement stroke of the sensor or the force level of the sensor. The sensed value is only a value sensed by the touch panel 120 , and the present invention does not limit the relationship. For example, the touch panel 120 can use a lookup table or a plurality of calculation formulas to correspond from the ratio to the sensed 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 of 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 , a first capacitor 321 having a second capacitance value C2 Two capacitors 322 , and a pen tip segment 230 .

The two signal sources 211 and 212 may be a first pulse width modulation signal source ( PWM1 ) and a second pulse width modulation signal source ( PWM2 ), respectively. The frequencies 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 may 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 the object, or when the force sensor does not detect the 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 suspended above the touch panel/screen 120 and the electrical signal emitted by the transmitter 110 can be detected, the intensity ratio of the two signal sources is fixed.

But when the pen tip section 230 of the transmitter 110 touches the object, or the force sensor detects the force, the impedance of the first capacitor 321 changes accordingly. The impedance ratio of the two capacitors 321 and 322 changes accordingly. When the transmitter 110 touches the surface of the touch panel/screen 120, and the electrical signal emitted by the transmitter 110 can be detected, the intensity ratio of the above two signal sources varies 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 second signal source 212 , a first capacitor 321 having a first capacitance value C1 , and a second capacitance value C2 The second capacitor 322 , and the pen tip segment 230 . The transmitter 110 may include multiple sensors for detecting various states. In one embodiment, the tip section 230 includes a pressure sensor for detecting the force state of the tip of the stylus, and reflecting it on the electrical signal it sends out. In another embodiment, the transmitter 110 may include multiple buttons, such as an eraser button and a barrel button. In other embodiments, the transmitter 110 may also include a switch for sensing whether the pen tip contacts the touch screen or other objects. Those skilled in the art can understand that the transmitter 110 may include more buttons or other forms 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 two other eraser capacitors 441 and the pen barrel capacitor 442 , which are respectively connected to the above-mentioned eraser (Eraser) button and pen barrel (Barrel) button, that is, switches SWE and SWB . When the above-mentioned 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, resulting in a change in the impedance ratio on the PWM1 and PWM2 signal paths, so that the two signals The intensity ratio changes accordingly.

Since the capacitance value C1 and the impedance value of the first capacitor 321 will change, when the eraser capacitor 441 and the pen barrel capacitor 442 are connected in parallel, the ratio of the impedance value in parallel with 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 strength ratio of PWM1/PWM2 falls within a first range. After the first capacitor 321 is connected in parallel with the pen barrel capacitor 442, that is, after the pen barrel button is pressed, the signal ratio of PWM1/PWM2 falls within 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 within a third range. After the first capacitor 321 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 simultaneously pressed, the signal ratio of PWM1/PWM2 falls to a fourth scope. Capacitance values and impedance values of the pen barrel capacitor 442 and the eraser capacitor 441 can be adjusted so that the above-mentioned first range, second range, third range, and/or fourth range do not overlap. Since the above possible ranges do not overlap, it can be known from which range the signal strength ratio falls, which button is pressed. Next, from the ratio of signal strength, what is the force level 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 two other eraser capacitors 441 and pen barrel capacitors 442 , which are respectively connected to the above-mentioned eraser (Eraser) button and pen barrel (Barrel). ) button, that is, switch SWE and SWB. When the above-mentioned button or switch is pressed, the pen capacitor 442 and the eraser capacitor 441 will be connected in parallel with the second capacitor 322, which will cause the impedance ratio on the PWM1 and PWM2 signal paths to change, so that the intensity ratio of the two signals changes accordingly. .

Since the capacitance value C1 and the 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 pen capacitor 442, the ratio of the impedance value of the first capacitor 321 in parallel with it 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 strength ratio of PWM1/PWM2 falls within a first range. After the second capacitor 322 is connected in parallel with the pen barrel capacitor 442, that is, after the pen barrel button is pressed, the signal ratio of PWM1/PWM2 falls within a fifth range. After the second capacitor 322 is connected in parallel with the eraser capacitor 441, that is, after the eraser button is pressed, the signal ratio of PWM1/PWM2 falls within a sixth range. After the second capacitor 322 is connected in parallel with the barrel capacitor 442 and the eraser capacitor 441, that is, after the barrel button and the eraser button are pressed simultaneously, the signal ratio of PWM1/PWM2 falls within a seventh range.

Using the spirit of the embodiment of FIG. 4A , the capacitance and impedance of the pen capacitor 442 and the eraser capacitor 441 can be adjusted so that the above-mentioned first, fifth, sixth, and seventh ranges are all different. overlapping. Since none of these ranges overlap, you can tell which button was pressed based on which range the signal strength falls within. Accordingly, the force degree 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 modification of the embodiment in FIG. 2 , FIG. 3 , and FIGS. 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 capacitance Cr. A ring electrode 550 surrounds the tip section 230, is electrically coupled to the ring electrode lead 551, and is connected to the printed circuit board at the back end. Although referred to herein as the ring electrode 550, in some embodiments, the ring electrode 550 may include a plurality of electrodes. The present 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 is electrically insulated from the pen tip, and the two are not electrically coupled.

In FIG. 5, six switches Sw1 to Sw6 are included. Assuming that the tip section 230 is to radiate the first signal source 211, Sw1 can be short-circuited and Sw2 can be open-circuited. Conversely, Sw1 can be opened. Or short-circuit Sw1 and Sw2 at the same time. Likewise, assuming that the tip segment 230 is to radiate the second signal source 212, Sw3 can be shorted and Sw4 can be opened. Conversely, Sw3 can be opened. Or short-circuit Sw3 and Sw4 at the same time. Assuming that the ring electrode 550 is to radiate the third signal source 513, Sw5 can be short-circuited and Sw6 can be open-circuited. Conversely, Sw5 can be left open. Or use Sw5 and Sw6 at the same time short circuit.

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

Please refer to FIG. 6 , which is a schematic flowchart of a method for determining a sensor or a sensing value of an active stylus tip by a touch device according to an embodiment of the present invention. The method may 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 for detecting the electrical signals sent by the pen tip section 230 of the transmitter 110 . The touch processing device 130 can determine the relative positions of the transmitter 110 and the touch panel 120 according to the signal strengths respectively received by the plurality of first electrodes 121 and the plurality of second electrodes 122 . Besides, 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 of the pen tip segment 230 .

The embodiment of FIG. 6 may correspond to the embodiments of FIGS. 2 to 5 . The first two steps 610 and 620 are to calculate the signal strengths M1 and M2 corresponding to the first signal source 211 and the second signal source 212 respectively. The two steps 610 and 620 may be performed in no particular order, or may be performed simultaneously. When the electrical signal from the first signal source 211 has a first frequency f1 and the electrical signal from the second signal source 212 has a second frequency f2, the above-mentioned signal strength M1 corresponds to the signal strength of the first frequency f1, and the above signal strength M1 corresponds to the signal strength of the first frequency f1. Said signal strength M2 corresponds to the strength of the signal of the second frequency f2. When the electrical signal sent by the first signal source 211 has a first frequency group F1 and the electrical signal sent by the second signal source 212 has a second frequency group F2, the above-mentioned 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 above, the so-called frequency here may also be the frequency of pulse width modulation.

Then, in step 630, a proportional value is calculated according to M1 and M2. Five examples of this ratio have been listed above, such as M1/M2, (M1-M2)/(M1+M2), (M2-M1)/(M1+M2), M1/(M1+M2) Or M2/(M1+M2). In addition to the above five ratios, those of ordinary skill in the art can also think of any ratio involving the intensities M1 and M2 to be substituted. Next, step 640 is executed to determine whether the ratio value is a predetermined value or falls within a predetermined range. If the determination result is true, step 650 is executed, and it is considered that the transmitter 110 is floating and not in contact with the touch panel 120 . Otherwise, step 660 is executed to calculate the sensing value of the pen tip segment 230 according to the proportional value. The sensed value may be related to the degree of force and/or the stroke, or may not be related to the degree of force and/or the stroke. The step of calculating the sensing value can be calculated by using a table look-up method, a linear interpolation method, or a quadratic curve method, depending on the corresponding relationship between the proportional value and the sensing value.

When the embodiment of FIG. 6 is applied to the embodiments of FIGS. 4A and 4B , additional steps may be performed at 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 above-mentioned 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 is 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, sixth range, or seventh range. According to this, in addition to knowing the sensing value of the pen tip segment 230, it is also possible to to infer whether the barrel button and/or the eraser button is pressed.

In an embodiment of the present invention, the controller or circuit in the transmitter 110 does not need to judge the degree of the force on the tip section 230 , and only changes the first impedance Z1 of the first element 221 based on the force on the tip section 230 and one or both of the second impedance Z2 of the second element 222, so that the signal strength of the transmitted first frequency f1 or the first frequency group F1 and the signal strength of the second frequency f2 and the second frequency group F2 are different. one or both changes. On the other hand, when the electrical signal is received via the touch panel 120, the intensity M1 and the second frequency f2 and the second frequency group of the first frequency f1 or the signal portion of the first frequency group F1 in the demodulated electrical signal are determined. The ratio of the intensity M2 of the signal portion of the group F2 can determine the degree of force on 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 embodiments 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 pen tip segment 230 . The above-mentioned first element 221 and second element 222 may be electronic elements formed by resistive elements, inductive elements, capacitive elements (eg, solid capacitors) or any combination thereof. In the embodiment shown in FIG. 7A , the second impedance Z2 can be fixed, the first impedance Z1 can be variable, and corresponds to the change of a certain sensor, such as 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 respective embodiments of FIGS. 2 to 5 , and will not be described in detail here.

Compared with the foregoing embodiment, the difference of the embodiment of FIG. 7A is that a single signal source 714 is further included for feeding electrical signals to the above-mentioned first element 221 and second element 222 . A control unit 760 is also included for measuring the first current value I1 and the second current value I2 respectively outputted after the electrical signal passes through the first element 221 and the second element 222 . The control unit 760 can also calculate a proportional value accordingly. The ratio can be I1/(I1+I2), I2/(I1+I2), I1/I2, I2/I1, (I1-I2)/(I1+I2), or (I2-I1)/(I1+I2), etc. Those skilled in the art can infer other kinds of ratio values calculated by using the current values I1 and I2.

The calculated ratio value can be used to estimate the force of the pen tip section 230 . The control unit 760 can transmit the data 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 know 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 transmit the data derived 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 above-mentioned data from a host wired communication unit 781 to know 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 above-mentioned single signal source 714 , but directly uses the electrical signal obtained by the wired communication unit 771 of the transmitter 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 above-mentioned single signal source 714 , 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 is used as a signal source.

It is worth mentioning that the embodiments of FIGS. 7A to 7D can be applied with the changes of the embodiment of FIG. 3 . The first element 221 can be the first capacitor 321 described above, and the second element 222 can be the first capacitor 321 described above. Two capacitors 322 . The embodiments of the seventh drawings A to D can be applied to the changes of the fourth drawings A and B. The above-mentioned first element 221 can be connected in parallel with the corresponding elements of other switches, or the above-mentioned second element 222 can be connected with other switches. Corresponding elements are connected in parallel, so that the control unit 760 can know the states 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 determining a sensing value of a pen tip of a transmitter by a touch device according to an embodiment of the present invention. The embodiment of FIG. 8 is a method for detecting a sensing value similar to the embodiment of 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 applicable to the embodiment that only feeds a single signal source, by calculating the first current amount I1 and the second current amount 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.

The method may be performed due to the control unit 760 in the embodiment of Figures 7A to 7D. The first two steps 810 and 820 respectively calculate the first current I1 and the second current I2 corresponding to the first element 221 and the second element 222 . The two steps 810 and 820 may be performed in no particular order, or may be performed simultaneously. Then, in step 830, a proportional value is calculated according to I1 and I2. Several examples of this ratio have been given above, such as I1/(I1+I2), I2/(I1+I2), I1/I2, I2/I1, (I1-I2)/(I1+I2) , or (I2-I1)/(I1+I2), etc. Next, step 840 is executed to determine whether the ratio value is a predetermined value or falls within a predetermined range. If the determination result is true, step 850 is executed, and it is considered that the transmitter 110 is floating and 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 proportional value. The sensed value may be related to the degree of force and/or the stroke, or may not be related to the degree of force and/or the stroke. The step of calculating the sensing value can be calculated by using a table look-up method, a linear interpolation method, or a quadratic curve method, depending on the corresponding relationship between the proportional value and the sensing value.

In some embodiments, when the first element 221 or the second element 222 is connected in parallel with the corresponding element of the other switch, as in the embodiments of FIGS. 4A and 4B , additional steps may be performed at step 860 . For example, when applied to the embodiment of FIG. 4A , it can be determined whether the ratio value calculated in step 830 falls within the above-mentioned 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 is pressed. Similarly, when used in the embodiment of FIG. 4B , it can be determined that the ratio value calculated in step 830 falls within the above-mentioned first range, fifth range, sixth range, or 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 is pressed.

Please refer to FIG. 9A , which is a timing diagram of signal modulation of the transmitter 110 according to an embodiment of the present invention. The embodiment of FIG. 9A may be applied to the transmitter 110 of FIGS. 2-5 . The horizontal axis of FIG. 9A is the time axis, and the sequence is from left to right. As shown in FIG. 9A , an optional noise detection period may be included before the touch panel/screen 120 sends out the beacon signal. The noise detected during this 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 contained in the noise signal. The part about noise detection will be explained later.

In one embodiment, the touch panel/screen 120 sends out a lighthouse signal, and the transmitter 110 includes a demodulator capable of detecting the lighthouse signal. Please refer to FIG. 29 , which is a block diagram of a lighthouse signal detection system according to an embodiment of the present invention. The detection lighthouse signal system 2900 includes a receiving electrode 2910 , a detection module 2920 , and a demodulator 2930 . In one embodiment, the receiving electrode 2910 may be the above-mentioned annular electrode 550, the above-mentioned pen tip segment 230, or other electrodes. The receiving electrode 2910 sends the received signal to the subsequent detection mode Group 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 described in detail 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 representing the received signal strength. When the voltage signal is higher than the reference voltage, it indicates that a strong enough signal is received, so the comparator 2912 outputs an activation signal or an enable 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 the lighthouse signal for a period of time, it can switch to a sleep mode and turn off the above-mentioned demodulator 2930 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, it can switch from a sleep mode to an energy-saving mode that saves less power, and activate the demodulator 2930 to perform demodulation. At the same time, the rest of the transmitter 110 remains off. Assuming that the demodulator 2930 considers that the received signal does not contain a lighthouse signal, after a period of time, the demodulator 2930 can be turned off, and the power-saving mode enters a sleep mode that saves power. Conversely, when the demodulator 2930 considers that the received signal contains a lighthouse signal, the demodulator 2930 can wake up other parts of the transmitter 110 to make the transmitter 110 switch from the power saving mode to the normal working mode .

Returning now to the embodiment of FIG. 9A , after a delay time of length L0 has elapsed, the transmitter 110 sends out electrical signals during the T0 period and the T1 period, respectively. Between the two periods T0 and T1, the Can also include a delay time of L1 length. The two time periods T0 and T1 may be of equal length or of 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 of other modes, such as the capacitive detection mode mentioned above, for detecting a non-active pen or finger.

The present invention does not limit the lengths of the above-mentioned delay times L0 , L1 , and L2 , and these three can be zero or any length of time. The lengths of these three can be related or not. In one embodiment, among the various periods shown in FIG. 9A , only the T0 and T1 periods in the signal frame are necessary, and other 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 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 barrel button is pressed, during the T0 period, both the first signal source 211 and the second signal source 212 transmit the frequency group F0, and during the T1 period, the first signal source 211 and the second signal Sources 212 each transmit frequency group Fl. When the touch processing device 130 detects the frequency group F0 in the T0 period and detects the frequency group F1 in the T1 period, it can be inferred that the pen button of the transmitter 110 in the floating state is pressed .

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

In another embodiment, the transmitter 110 in the suspended state does not necessarily require both signal sources 211 and 212 to emit signals of the same frequency group. The present invention does not limit Table 1 as the only embodiment. Besides, the transmitter 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 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 a contact state, that is, the force sensor feels pressure.

In the embodiment shown in FIG. 4A, the following is the case where the pen barrel 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 emits the frequency group F1. Also because the impedance value of the first capacitor 321 changes during contact, the resistance of the pen tip section 230 can be calculated according to the intensity ratio of the F0 and F1 signals received during the T0 and T1 periods respectively. degree of stress. Besides, since the touch processing device 130 detects the F0 signal in the T0 period and the F1 signal in the T1 period, it can be inferred that the pen lever button is pressed.

In the embodiment shown in FIG. 4A, the following is the case where the pen barrel 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 the frequency group F0, and the second capacitor 322 and the pen barrel capacitor 442 are connected in parallel. 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 pen lever 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 emits the frequency group F1. Also because the impedance value of the first capacitor 321 changes during the contact, it can be determined according to the T0 and T1 periods respectively. The strength ratio of the received F0 and F1 signals is used to calculate the force of the stylus. Besides, since the touch processing device 130 detects the F0 signal in the T0 period and the F1 signal in the T1 period, it can be inferred that the pen lever button is pressed.

Table 3

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, which buttons are pressed can be known according to the frequency group.

Table 4

Please refer to Table 4, 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, which buttons are pressed can be known according to the frequency group, and the force level of the stylus tip can be estimated by relying on the ratio of the signal strengths received during the T0 and T1 periods.

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 variation of the embodiment of Figure 9A. The difference between FIG. 9B and FIG. 9A is that the step of noise detection is performed after the T1 period. Then, the detection of other modes is performed.

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

The signal modulation of FIG. 9C is a signal sent out when the transmitter 110 is in a floating state. In this state, the signal frame sent by the transmitter 110 contains only a single R period. During the R period, the annular electrode 550 and the pen tip segment 230 can simultaneously send out electrical signals. In one embodiment, these electrical signals may come from the same signal source and have the same frequency and/or modulation method. For example, the ring-shaped electrode and the pen tip all send out electrical signals from the third signal source 513 . For another example, the annular electrode 550 and the pen tip section 230 can jointly emit 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 can know that the transmitter 110 is hovering on a certain position of the touch panel 120 only by detecting the electrical signal sent by the ring electrode 550 . If the electrical signal emitted by the ring electrode 550 and the pen tip segment 230 comes from The signal strength of the same signal source, or the same frequency group, will be the largest, so that the touch panel can detect the stylus floating range to the greatest extent. During the R period in another embodiment, the electrical signal can also be sent only through the ring-shaped electrode 550 .

Please refer to FIG. 9D , which is a timing diagram of 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, and then the touch panel performs other forms of detection. The embodiment of FIG. 9D has a longer L1 period compared to that of FIG. 9C. 9D compared to the embodiment of FIG. 9E, 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 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 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 an R period to the front of the signal frame of the embodiment of FIG. 9A . In this embodiment, regardless of whether the pen tip segment 230 is pressed or not, the transmitter 110 always sends out electrical signals from the pen tip in the T0 period and the T1 period, thereby saving some logic circuit designs. However, compared with the embodiments of FIG. 9C and FIG. 9D , the embodiment of FIG. 9E wastes the power of the electrical signal sent in the T0 period and the T1 period. On the other hand, the touch processing device 130 does not need to perform detection in the R period, as long as the electrical signal sent by the pen tip section 230 can be detected in the T0 period and the 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 suspended state.

Please refer to FIG. 9F , which is a timing diagram of signal modulation of the transmitter 110 according to an embodiment of the present invention. The signal modulation of Figure 9F can be applied to the transmitter shown in Figure 5 110. In the embodiment of FIG. 9E , the proportional relationship between the R period and the lengths of the T0 period and the T1 period is not limited. In the embodiment of FIG. 9F , the length ratio 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 sampling N times within a unit time, and N is a positive integer. Therefore, in the R period, the T0 period, and the T1 period, the touch panel can perform N:2N:4N sampling. The present invention does not limit the length ratios of the three periods. For example, the period with the strongest electrical signal power can last for the smallest unit time, and the period with the smallest electrical signal power can last 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 only the modulation of the two time periods T0 and T1 is mentioned in the above paragraphs, the present invention is not limited to the modulation of the two time periods, but can be applied to the modulation of more time periods.

In one embodiment, the transmitter 110 may emit a higher-intensity electrical signal when the pen tip is not in contact, and emit a lower-intensity electrical signal when the pen tip is in contact. Accordingly, the touch processing device 130 has a higher probability of detecting the transmitter 110 hovering above the touch panel 120 . Moreover, after 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 pen 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 contains only the R period. During the R period, the ring electrode 550 and the pen tip section 230 simultaneously send out electrical signals. In one embodiment, the electrical signals may come from the same signal source and have the same frequency and/or modulation method. In one embodiment, the ring electrode 550 and the pen tip segment 230 transmit a signal from the third signal source 513 . In other embodiments, the ring-shaped electrical The pole 550 and the nib segment 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 in the R period is the sum of the outputs of the three signal sources 211 , 212 and 513 .

In the embodiment of FIG. 9A, Table 1 shows the output power of the first signal source 211 and the second signal source 212 when the transmitter 110 is in a floating state. 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 higher intensity electrical signal when the pen tip is not in contact, and emit a lower intensity electrical signal when the pen tip is in contact.

Similarly, Table 3 shows that the transmitter 110 utilizes the output power of the first signal source 211 and the second signal source 212 when the transmitter 110 is in the floating state. 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 higher intensity electrical signal when the pen tip is not in contact, and emit a lower intensity electrical signal when the pen tip is in contact.

The reason why the steps and periods of noise detection are added 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 will emit noise at the frequency of f0 , and the frequency of f0 is exactly one frequency in the frequency group F0 . Assume that frequency group F0 also contains another frequency f3. When the user holds the electronic system 100, the noise of the f0 frequency will be transmitted to the touch panel/screen 120 through the user's fingers. If the step of noise detection is not performed, the touch panel/screen 120 may mistake the f0 frequency signal transmitted by the finger as the electrical signal transmitted by the transmitter 110 during the period of the signal frame. Therefore, if the noise of the f0 frequency is detected in advance, the signal source of the f0 frequency can be filtered out during the period of the signal frame.

Assuming that the transmitter 110 has the function of automatic frequency conversion, when the transmitter 110 detects that the touch panel/screen 120 emits a noise of frequency f0, it automatically switches to another frequency f3 of the same frequency group F0. In the period of the signal frame, the touch processing device 130 detects the frequency f3 from the transmitter 110 and the frequency f0 from the finger, thereby causing confusion. Therefore, in the embodiment shown in FIG. 9B , in the case of aliasing, a noise detection step is performed after the T1 period or after the signal frame. Since the transmitter 110 has stopped sending the f3 frequency signal, the finger and the electronic system 100 continue to send out the f0 frequency noise. 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 that really comes 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 intensities 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 ratio of the signal intensities of a plurality of frequencies is adjusted by using the impedance change of the first capacitor 221 . A traditional capacitive element is formed by two conductive metal plates. Its permittivity C is proportional to the dielectric constant and the area of the metal plates, and is inversely proportional to the distance between the metal plates.

One of the main spirits of the above-mentioned embodiments is to use a mechanical structure to turn the stroke of the elastic pen tip section 230 along the axis of the transmitter 110 to be perpendicular to the axis of the transmitter 110 or with the axis of the transmitter 110 A stroke in an angular direction. Through 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 kept fixed, thereby changing the first frequency in the electrical signal. 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 FIG. 11, three metal plates that do not contact each other are included. first metal plate 1110 and the second metal plate 1120 form the first capacitor 221 , and the second metal plate 1120 and the third metal plate 1130 form the second capacitor 222 . In an example, the first metal plate 1110 is formed on an elastic circuit board or a printed circuit board, and the surface of the first metal plate 1110 is provided with insulating paint or another insulating plate. 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 their surfaces are provided with insulating paint or another layer of insulating plate. The second metal plate 1120 is coupled to the front nib segment 230 via an additional circuit. The tip of the pen is fixed on a lifting element 1140 (such as the bevel device described below), which directly or indirectly lifts part or all of the first metal plate 1110 (or the elastic circuit board or the printed circuit board) according to the displacement of the tip section 230, or causes The deformation of the part of the first metal plate 1110 (or the elastic circuit board or the printed circuit board) perpendicular to the axis of the transmitter 110 is collectively referred to as the displacement perpendicular to the axis of the stylus in the following description.

The first metal plate 1110 is supplied with an electrical signal having a first frequency (group), and the third metal plate 1130 is supplied with an electrical signal having a second frequency (group). Therefore, the second metal plate 1120 induces an electrical signal having the first frequency (group) and the second frequency (group), and transmits it to the touch panel 120 through the front pen tip section 230 . 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 direction of the axis of the transmitter 110 . However, after the pen tip section 230 is stressed, the bevel device 1140 behind the pen tip section converts the force from a direction parallel to the axis to a direction perpendicular to the axis, resulting in the deformation of the circuit board to which the first metal plate 1110 belongs. and displacement, thereby causing 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 boards to which the second metal plate 1120 and the third metal plate 1130 belong are 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 be turned upward, this embodiment At least one supporting element 1150 may be included to provide a supporting force in the opposite direction, so as to help the circuit board on which the first metal plate 1110 is located to return to its original state after the force on the pen tip section 230 disappears. 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 permittivity of the second capacitor 222 can be designed to be the same. With 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. In addition, when the permittivity of the first capacitor 221 and the second capacitor 222 are the same, when the external environment changes, the dielectric constants thereof also change at the same time, thereby maintaining the preset ratio value. Besides, the transmitter 110 itself does not need an active control element to adjust the ratio of the two impedances Z1 and Z2, and only needs to passively provide an electrical signal, 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 support element 1150 , and the connection circuit from the second metal plate 1120 to the pen tip section 230 . For the description of the embodiment shown in FIG. 12 , reference may be made to FIG. 11 .

Please refer to FIG. 13 , which is a modification of the embodiment shown in FIG. 12 , wherein the third metal plate 1130 can be moved behind the first metal plate 110 and is not electrically coupled with the first metal plate 1110 . When 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, wherein the first A metal plate 1110 and a third metal plate 1130 can be respectively divided into two metal plates A and B, which are fed into the first frequency (group) and the second frequency (group) respectively. When the pen tip section 230 is stressed, the first metal plate A 1110A, the first metal plate B 1110B and the circuit boards 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 boards to which they belong will not be displaced and 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 is larger and more obvious than the embodiment shown in FIG. 13 .

Please refer to FIG. 15, which is a modification of the embodiment shown in FIG. 14, wherein 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 They are commonly connected to the nib segment 230 by an electrical 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 boards 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 boards to which they belong will not be displaced and 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. Wherein, the first metal plate 1110 and the third metal plate 1130 are fixed, respectively feeding signals of the first frequency (group) and the second frequency (group). The second metal plate 1120 will sense the signals of the first frequency (group) and the second frequency (group) of the upper and lower metal plates, and the output has a mixed signal Electrical signals of the first frequency (group) and 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 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. Therefore, the electrical signals corresponding to the first frequency (group) and the second capacitor 222 are analyzed. For the intensities M1 and M2 of the frequency (group), a proportional value is calculated according to the two intensity values. When the ratio value is a predetermined value or falls within a predetermined 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 according to the two strength values, and according to the change of the proportional value, the deformation or stress of the second metal plate 1120 can be reversed. Here, each step 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 are respectively fed with 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 the output has 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. Therefore, the electrical signals corresponding to the first frequency (group) and the second capacitor 222 are analyzed. For the intensities M1 and M2 of the frequency (group), a proportional value is calculated according to the two intensity values. When the ratio value is a predetermined value or falls within a predetermined range, it can be known that the first metal plate 1110 is not deformed.

When the first metal plate 1110 is deformed, the impedance and permittivity of the first capacitor 221 and the second capacitor 222 change. Therefore, a proportional value is calculated according to the two strength values, and the deformation or stress of the first metal plate 1110 can be reversed according to the change of the proportional value. Here, each step 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 change with temperature and humidity at the same time. Therefore, when calculating the proportional value, the difference between temperature and humidity can be reduced or avoided. The effect of the scale value.

Please refer to FIG. 17A and FIG. 17B , which are schematic structural diagrams of the first capacitor and the second capacitor according to the present invention. In the embodiments of FIGS. 16A and 16B , the first frequency (group) and the second frequency (group) are fed respectively. In the embodiments of FIGS. 17A and 17B , only the driving signal of the same frequency needs to be fed. . In other words, it can be applied to the various embodiments shown in FIGS. 7A to 7D , and the fed driving signal can be the single signal source 714 shown in FIGS. 7A and 7B , or it can be the power generated by the wired communication unit 771 of the transmitter in FIG. 7C . The signal as the signal source 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 in FIG. 7D is close to the touch panel 120 as the signal source.

The structure of the three-layer metal plate of FIG. 17A is the same as that of the three-layer metal plate of FIG. 16A , and the above-mentioned driving signal having a certain frequency is fed into the deformable second metal plate 1120 . Through the capacitive effect with the second metal plate 1120, the first metal plate 1110 will output the induced first current value I1. Likewise, 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 1120 is not deformed, the impedance values of the first capacitor 221 and the second capacitor 222 are fixed. The currents I1 and I2 are separated, and a proportional value is calculated according to the two current values. When the ratio value is a predetermined value or falls within a predetermined range, it can be known that the second metal plate 1120 is not deformed.

When the second metal plate 1120 is deformed, the impedance and permittivity of the first capacitor 221 and the second capacitor 222 change. Therefore, a proportional value is calculated according to the two current values I1 and I2, and according to the change of the proportional value, the deformation or stress of the second metal plate 1120 can be reversed. 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 above-mentioned driving signal with a certain frequency is fed into the deformable first metal plate 1110 . Through the capacitive effect with the first metal plate 1110, the second metal plate 1120 outputs the induced first current value I1. Likewise, 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. Therefore, the currents I1 and I2 are analyzed, and a proportional value is calculated according to the two current values. When the ratio value is a predetermined value or falls within a predetermined range, it can be known that the first metal plate 1110 is not deformed.

When the first metal plate 1110 is deformed, the impedance and permittivity of the first capacitor 221 and the second capacitor 222 change. Therefore, a proportional value is calculated according to the two current values I1 and I2. According to the change of the proportional value, the deformation or stress of the first metal plate 1110 can be reversed. 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 . The embodiment shown in Figure 11 needs to feed signals of two frequencies. However, in the embodiment shown in Figure 18, as in Figure 17A Similar to the embodiment of FIG. 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, and it is not necessary to know how many frequency components the fed signal has.

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 of the second metal plate 1120 and the third metal plate 1130 do 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. Therefore, the currents I1 and I2 are analyzed, and a proportional value is calculated according to the two current values. When the ratio value is a predetermined value or falls within a predetermined 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 be changed due to the deformation of the first metal plate. Therefore, when the first metal plate 1110 is deformed by an external force, the first current value I1 will change. Therefore, the ratio of the current values I1 and I2 will also change, and accordingly, the deformation or stress of the first metal plate 1110 can be reversed. 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 difference corresponding to the first capacitor 221 and the second capacitor 222 The ratio of the currents I1 and I2 is used to calculate the sensing value, thereby judging 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 pressure sensing capacitor (FSC; force sensing capacitor), which can be used to replace the traditional pressure sensing element, such as the pressure sensing resistor FSR, Provides stress judgment. 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 aforementioned figures, the use of a flexible printed circuit board as a force sensing capacitor is disclosed. One of the features of the present invention is to provide other forms of force-sensing capacitors.

Please refer to FIG. 19A , which is an exploded schematic view of the center section of the force-sensing capacitor of the transmitter 110 and its structure. Note that the scale of Figures 19A to 19E has been altered to highlight certain portions. Furthermore, some fixing elements are omitted in order to simplify the description. In Fig. 19A, the leftmost element is a rod-type pen tip or tip segment 230, and the tip portion may be an electrical conductor. For convenience, the tip section 230 is referred to as the transmitter 110 or the front end of the active pen. When in contact with the front movable element 1971 , the tip section 230 is electrically coupled with the front movable element 1971 . The front movable element 1971 is combined with the female fastener in the middle of the rear movable element 1972 by a male fastener in the middle. In one embodiment, the male and female fasteners may include threads. The front movable element 1971 and the rear movable element 1972 may be conductors or conductive elements, such as metal pieces.

FIG. 19A includes a housing 1980 that can annularly contain the aforementioned front and rear movable elements 1971 and 1972 . For simplicity, only a part of the housing 1980 is shown in FIG. 19A . The portion of the housing 1980 close to the nib section 230 is indented into a neck with a smaller diameter, and a shoulder as a load-bearing portion may be included between the neck and the larger diameter portion of the housing 1980 . In FIG. 19A , at least one elastic element 1978 is sandwiched between the force-bearing portion and the front movable element 1971 for exerting force on 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, dome, or other type of elastic element. In an embodiment, different from 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 along the long axis of the pen, respectively. Since the front and rear movable elements 1971 and 1972 can be combined to form a movable element 1970 by means of fasteners, the movable element 1970 can be pushed toward the front-end movable element 1971 or the rear-end movable element 1972 regardless of whether the force is applied to the front-end movable element 1971 or the rear-end movable element 1972 Nib segment 230, and then push the nib segment 230 to the front end.

When the nib segment 230 is applied rightward or rearward 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 bearing part of the housing 1980 . Thus, the present invention provides a design that allows the movable element 1970 to travel within the neck of the housing 1980 along the long axis of the pen for one stroke. Likewise, since the movable element 1970 abuts the nib segment 230, the nib segment 230 can also be moved along the long axis of the pen to achieve the same stroke. The length of this stroke can vary depending on the design, say, 1mm or 0.5mm. The present invention does not limit the length of the stroke.

At the rear end of the rear end 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 of a doped 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 by the present 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 means of fasteners or fasteners. When the movable element 1970 moves to the rear or to the right, since the position of the conductor base 1975 is stationary, the rear movable element 1972 compresses the compressible conductor 1974, resulting in a change in the capacitance value of the above-mentioned force-sensing capacitor.

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

The base wire 1976 can also be another elastic element. In some embodiments, unlike FIG. 19A, the pedestal wire 1976 can wrap around the conductor pedestal 1975. In another embodiment, the conductor base 1975 is non-conductive, and the base wire 1976 is electrically coupled to the compressible conductor 1974 through the conductor base 1975 .

In one embodiment, the insulating film 1973 can be fabricated by dipping the right end plane of the rear movable element 1972 into 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 includes four examples of the interface between the compressible conductor 1974 and the insulating film 1973 . The example of (a) is the contact surface of the central protrusion, the example of (b) is the contact surface of a single inclined surface, the example of (c) is the contact surface of the center cone, and the example of (d) is the contact surface of a plurality of protrusions 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 can be a contact surface as shown in Figure 20, a central protrusion, a single bevel, a central cone, 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 planar.

Please refer to FIG. 19B , which is a schematic cross-sectional view after the structures shown in FIG. 19A are assembled. After the combination, the front movable element 1971 and the rear movable element 1972 have been combined into a single movable element 1970 . The movable element 1970 and the load-bearing part of the housing 1980 are connected by an elastic element 1978, and the elastic tension of the elastic element 1978 makes the movable element 1970 move toward the whole body. The direction of the front end abuts against the nib segment 230 until the rear end movable element 1972 abuts against the load-bearing portion 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 deformed by compression, and 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 schematic cross-sectional view after the structures shown in FIG. 19A are assembled. Compared to Figure 19B, since the nib segment 230 is under pressure to the rear, it moves toward the rear. Affected by the movement of the nib segment 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 bearing portion of the housing 1980 . At this time, the compressible conductor 1974 is deformed by the compression of the movable element 1970 and the insulating film 1973 , and the capacitance value of the force sensing capacitor is a second capacitance value different from the above-mentioned first capacitance value.

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

Please refer to FIG. 19D , which is an exploded schematic view of the center section of the force-sensing capacitor of the transmitter 110 and its structure according to an embodiment of the present invention. It differs from FIG. 19B in 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 deformed. In this way, the capacitance value of the force sensing capacitor can also be changed.

Please refer to FIG. 19E , which is a transmitter 110 according to an embodiment of the present invention The exploded schematic diagram of the central section of the force-sensing capacitor and its structure. The difference between FIG. 19E and FIG. 19B is that the right end of the rear movable element 1972 is no longer an insulating film 1973 but a compressible dielectric material 1979 . For example, insulating rubber, plastic, foam, etc. The conductors connected to the conductor base 1975 are replaced with incompressible conductors, such as metal blocks or graphite. Since 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 Figure 19E is more expensive than the compressible conductor 1974 of Figure 19A.

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

Similar to Figure 19D, the positions of the compressible insulating material 1979 and the conductor may also be interchanged. A compressible insulating material 1979 may interface with a conductor base 1975, and the conductor may be attached to the rear end of the movable element 1970. When the movable element 1970 moves toward the rear end, the conductor causes the compressible insulating material 1979 to deform, so that the capacitance value of the force sensing capacitor changes.

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 the 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 unit 2120 can implement the method shown in FIG. 6 .

When the external pressure drives the capacitor C1 to generate a change in the capacitance value, the control unit 2120 can also analyze the pressure change corresponding to the change in the capacitance value. Therefore, the pressure sensor 2110 of this embodiment can be widely used in various pressure measurement devices. such as load cells. In an application, the above-mentioned pressure sensor 2110 can also be used in another stylus. After analyzing the received pressure change of the stylus tip through the control unit 2120, the control unit 2120 drives a signal transmission with a predetermined frequency f0. unit that transmits pressure changes to the touch panel.

It was previously mentioned that the transmitter 110 can send 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 relationship between the transmitter 110 and its sensor. state. When the beacon signal is not received for a period of time, the transmitter 110 may enter the power saving mode, and only detect whether there is a beacon signal after a detection period, and continue to detect again after receiving the beacon signal. Beacon signal, wherein 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 to the circuit or controller of the transmitter 110 until it is woken up. In an embodiment of the present invention, in the sleep mode, the transmitter 110 turns off the related circuits for receiving the lighthouse signal and transmitting the electrical signal. The aforementioned wake-up from the sleep mode can be achieved by setting a button or switch on 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 the present application, one of the functions of the annular electrode 550 is added, which can be used to receive the above-mentioned lighthouse signal, and is not limited to receiving the lighthouse signal only through the pen tip section 230 . Due to the ring electric The area and volume of the pole 550 are larger than the tip of the pen tip section 230 , so the lighthouse signal can be received at a place far away from the touch panel 120 . Or let the touch panel 120 send a lighthouse signal with a weaker signal strength, so as to reduce the power consumption of the touch panel 120 . If the beacon signal is not received for 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 restore the transmitter 110 to a normal operation state by touching the pen tip 230 . The transmitter 110 may be woken up using the embodiment of Figures 23A and 23B, or the embodiment of Figures 24A and 24B. 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 a plurality of transmitters 110 are to be operated on one touch panel 120, the touch panel 120 can send out different lighthouse signals, so that the corresponding transmitters 110 can send out active signals within a period of time after receiving the lighthouse signals . The above-mentioned transmitter 110 can also adjust the frequency or modulation method 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 by the touch processing device 130 . The signal of which transmitter 110 is detected is detected. Likewise, the above-mentioned different lighthouse signals may 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 driving signal of a certain frequency to an input end c of the pressure sensor 2210, and receive the outputs from the output ends a, b corresponding to the first capacitor C1 and the second The currents I1 and I2 of the capacitor C2 are sent to the control unit 2220, and then the control unit 20 uses the proportional value of the two to calculate the sensing value, thereby judging 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 can also be input to an input terminal c of the pressure sensor 2220 from the outside.

Please refer to FIGS. 23A and 23B, which are simple diagrams according to an embodiment of the present invention. Schematic diagram of the structure of the switch. In the embodiment shown in FIG. 23A, there are three layers of circuit boards in total. Same as the previous illustration, with a mechanical bevel 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 traces 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 p2 of the intermediate circuit board. The intermediate circuit board additionally has a third contact p3, and the second contact p2 is electrically connected to the third contact p3. A fourth contact p4 of the lower circuit board is connected to a ground potential (eg, ground), and can also 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 connection port GPIO1, when the circuit of the upper circuit board and the intermediate circuit board is short-circuited (the first contact p1 and the second contact p2 are in electrical contact), and the intermediate circuit board and the lower circuit When the circuit of the board is short-circuited (the third contact p3 and the fourth contact p4 are in electrical contact), the potential of the first connection port GPIO1 is a low potential or a ground potential.

Referring to FIG. 23B , after receiving the pressure, the mechanical slope will be pushed to the left, which will deform the contact end of the upper circuit board and the lower circuit board. After deformation, the circuit of the upper circuit board and the intermediate circuit board is open (the first contact p1 and the second contact p2 are not in electrical contact), or the circuit of the intermediate circuit board and the lower circuit board is open (the third contact p3 and the fourth contact p4 are not in electrical contact), then the potential of the first connection port GPIO1 is the potential of the voltage source Vdd.

When the potential of the first connection port GPIO1 changes from low to high, the transmitter 110 in the sleep mode can be woken up. As mentioned earlier, support elements can be attached outside 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 can be restored to their original state, and the potential of the first connection port is changed from high to high. Low. The aforementioned first connection port and second connection port may be pins of a 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 embodiment of FIGS. 23A and 23B has two fractures. No matter if any fracture is open, the potential of the first connection port can be changed from low to high. The embodiment of Figures 24A and 24B, with only one breakout, connects the circuit from the intermediate circuit board to 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 connection port GPIO2.

Please refer to FIG. 25 , the present invention provides a schematic diagram of inferring the position of the pen tip. There are two transmitters 110 in the figure, both of which include a ring electrode 550 and a pen tip section 230 . The transmitter 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 angle between the transmitter 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, the surface transparent layer is usually a tempered glass, and the display layer is located under the transparent layer.

Since the transmitter 110 sends an electrical signal from the ring electrode 550 and/or the pen tip segment 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 projection of the ring electrode 550 and the pen tip segment 230 on the The center position of the touch panel 120 . Next, in the time periods T0 and T1 , the transmitter 110 only transmits electrical signals through the pen tip section 230 . The touch processing device 130 can calculate the position of the center of gravity Tip_cg of the signal, which corresponds to the center position of the pen tip segment 230 projected on the touch panel 120 .

As shown in the transmitter 110 on the left 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 pen tip touches the surface transparent layer of the touch panel 120, Tip_surface is equal to the above-mentioned R_cg and Tip_cg. It can also be inferred that the point where the pen tip is projected on the display layer of the touch panel 120, Tip_display is equal to the above-mentioned R_cg, Tip_cg, and Tip_surface.

As shown in the transmitter 110 on the right in FIG. 25 , R_cg is not equal to Tip_cg because it has an inclination angle with the touch panel 120 . It is conceivable that when the distance between the two is farther, the greater the inclination angle is. According to different designs of the transmitter 110 , the touch processing device 130 can look up a table or calculate the 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 an annular 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 shown in FIG. 25 may 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 section 230 on the touch panel 120 is calculated. The present invention does not limit the order in which the two steps 2610 and 2620 are executed. Next, in an optional step 2630, a tilt angle is calculated according to the first center position R_cg and the second center position Tip_cg. In 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 an 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 needs to be performed. The present invention also does not limit the order in which steps 2630 to 2650 are executed.

Please refer to FIG. 27 , which is an embodiment in which the display interface reflects the aforementioned inclination angle and/or pressure stroke. Figure 27 contains five sets of horizontal rows of embodiments (a) to (e), each set containing three inclinations Inclination, the leftmost vertical row represents the case where the active pen has no inclination angle, the second inclination angle of the right example is larger than the first inclination angle of the middle example, and the directions of the inclination angles are all directed to the right. The so-called brushstrokes here are usually displayed in the coloring range of the picture in the drawing software.

It is worth noting that, in this embodiment, it is not necessary to use the ring electrodes shown in FIGS. 25 and 26 to calculate the inclination angle and the points Tip_surface and Tip_display at which the tip of the pen tip section 230 contacts the transparent surface layer and the display layer of the touch panel 120 . In one embodiment, other sensors may be installed on the pen to measure the inclination. For example, the inertial measurement unit (IMU), gyroscope (gyroscope), accelerometer (accelerometer), etc. made of micro-electromechanical devices measure the inclination angle, and transmit the inclination angle through various wired or wireless transmission methods. 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 custom standard, such as Bluetooth wireless communication protocol or Wireless USB.

It is assumed here that in FIG. 27 , the active pen of each embodiment contacts the touch panel with the same pressure. In a certain embodiment, the intersection point of each horizontal line and the straight line represents the point Tip_surface where the above-mentioned pen tip section actually contacts the surface transparent layer of the touch panel. In another embodiment, the intersection point of each horizontal line and the straight line represents the position Tip_cg of the center of gravity of the pen tip signal. 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, it may be collectively referred to as the representative point of the pen tip Tip, and the representative point of the pen tip may be the aforementioned Tip_display, Tip_surface or Tip_cg.

In Example (a), as 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 inclination angle. The greater the inclination angle, the greater the distance between the bifocal points of the ellipse. The center point of the ellipse is the above-mentioned nib Table point Tip.

The difference between the embodiment (b) and the embodiment (a) is that the intersection point of the center extension line of the elliptical bifocal and the elliptical line is the above-mentioned representative point Tip of the pen tip. The difference between the embodiment (c) and the embodiment (a) is that one of the focal points of the elliptical bifocal point is the above-mentioned representative point Tip of the pen tip. Examples (d) and (e) differ from example (a) in that the shape of the stroke is changed from an oval to a teardrop shape. The teardrop-shaped tip of Example (d) is the above-mentioned representative point Tip of the pen tip. The teardrop-shaped tip of Example (e) faces somewhere at the tail end, which is the above-mentioned representative point Tip of the pen tip.

Although FIG. 27 shows two shapes and different points represented, the present application does not limit the shape of the stroke and the types of points represented. In addition, in one embodiment, the pressure of the pen tip can control the size of the above-mentioned shape, for example, the size of the pressure is related to the radius of the circle, or the distance of the bifocal point of the ellipse. All in all, the human-machine interface can change the displayed content according to the pressure value and/or the tilt angle of the active pen tip.

In addition to changing the shape of the stroke, the above-mentioned pen tip pressure value and/or tilt angle value can also represent different commands. For example, in 3D design software, the color temperature of the light source, or the intensity of the light source, or the illumination breadth of the light source can be adjusted through the tilt angle. Or when the pen tip selects an object, the direction of the inclination angle can be used to adjust the direction of the object, and the rotation direction of the object can also be adjusted according to the angle of the inclination angle.

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

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

The embodiment (a) of FIG. 28 corresponds to the embodiment (a) of FIG. 27 , that is, the center point of the ellipse corresponds to the above-mentioned pen tip representative point Tip. Similarly, the embodiment (b) of FIG. 28 corresponds to the embodiment (b) of FIG. 27 , and the intersection point of the center extension line of the elliptical bifocal point and the elliptical line is the above-mentioned representative point Tip of the pen 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 different inclination angles. In this way, the pressure value and the inclination angle can be used to express the strokes of some soft and elastic pen tips, such as a brush pen or a quill pen.

One of the features of the present invention is to provide a transmitter. The transmitter includes: a first element for receiving a signal having a first frequency group, wherein a first impedance value of the first element changes according to a force; a second element for receiving There is a signal of a second frequency group, the second element has a second impedance value; and a pen tip section is used to receive the input of the first element and the second element, and issue an electrical signal, wherein the pen tip The segment is used to receive this force.

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

In one 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 one embodiment, the above-mentioned first frequency group includes one or more first frequencies, the second frequency group includes one or more second frequencies, and the first frequencies are different from the second frequencies.

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 nib segment does not touch any object.

In one 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 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, the fourth switch is closed, and the first element and the fourth element are connected in parallel. When the ratio value etc. At or within a fourth range value, the third switch and the fourth switch are closed, and the first element, the third element and the fourth switch are connected in parallel. 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-shaped electrode surrounding the tip section, and the ring-shaped electrode is not electrically coupled with the tip section. In one embodiment, the ring electrodes described above may comprise one or more separate electrodes.

One of the features of the present invention is to provide a signaling method for controlling a transmitter. The transmitter includes a first element, a second element, and a nib segment, wherein the nib segment is used to receive the first element With the input of the second element, the signaling method includes: changing a first impedance value of the first element according to a force received by the pen tip segment; 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 making the pen tip section 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, comprising: receiving an electrical signal sent by the transmitter; calculating a first frequency group in the electrical signal a first signal strength M1 of a group; calculating a second signal strength M2 of a second frequency group in the electrical signal; and calculating the Force.

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

In one embodiment, the method further includes determining the state of the third switch according to the ratio value. In another embodiment, the method further includes determining the state of the fourth switch according to the proportional value.

One of the features of the present invention is to provide a touch processing device for judging 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 a plurality of 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 according to the A proportional value of the signal strength M2, the force is calculated.

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

One of the features of the present invention is to provide a touch system for judging a force received by a transmitter, comprising: a transmitter, a touch panel, and a touch processing device, wherein the transmitter 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 Signals of two frequency groups, wherein the second element has a second impedance value; and a nib segment for receiving the input of the first element and the second element, and sending out an electrical signal, wherein the nib segment uses After receiving the force, the touch panel includes a plurality of first electrodes and a plurality of second electrodes, wherein the plurality of first electrodes and the plurality of second electrodes form a plurality of sensing point, the touch processing device further includes: an interface for connecting to the plurality of first electrodes and the plurality of second electrodes on the touch panel, and at least one demodulator for calculating the plurality of senses Among an electrical signal received by one of the measuring points, 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 according to A ratio of the first signal strength M1 to the second signal strength M2 is used to calculate the force.

One of the features of the present invention is to provide a transmitter, comprising: 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 , used to receive the signal source, wherein the second element has a second impedance value; a pen tip is used to receive the force; a control unit is used to calculate 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 sent out.

In one embodiment, the second impedance value does not vary 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 segment.

In one embodiment, the ratio of the first current value I1 to the second current value I2 is related to the force. Wherein, the ratio 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 one 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 one embodiment, the control unit further determines the state of the third switch according to the proportional value. In another embodiment, the control unit further determines the state of the fourth switch according to the proportional value.

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

One of the features of the present invention is to provide a signaling method for controlling a transmitter. The transmitter includes a first element, a second element, and a tip, and the signaling method includes: making the first element A first impedance value of the stylus varies according to a force received by the pen tip segment; a signal source is provided to the first element and the second element; a 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 features of the present invention is to provide a touch control system for judging 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 pen tip section for receiving the force; a control unit for calculating a first current value I1 and a second current value I2 returned by the first element and the second element respectively, and according to the first current value I1 and the second current value I2 A ratio of a current value I1 and a second current value I2 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 for connecting the touch panel for detecting the transmitter and the touch panel and transmits the relative position to the host.

In one embodiment, the control unit further determines the state of the third switch according to the proportional value. In another embodiment, the control unit further determines the fourth switch according to the ratio value. off state. In one embodiment, the communication unit is used to transmit the state of the third switch. In another embodiment, the communication unit is further configured to transmit the state of the fourth switch. In one embodiment, the host communication unit is used for receiving the state of the third switch. In another embodiment, the host communication unit is configured to receive the state of the fourth switch.

One of the features of the present invention is to provide a force sensor, comprising: a first input end for receiving a signal having a first frequency group; a second input end for receiving a signal having a second frequency a signal of the group; 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 are a The proportional value is related to a force.

In one embodiment, the ratio value may 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 proportional 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, comprising: an input terminal for receiving a signal source; a first output terminal for outputting a signal having a first current value I1; and a first The two output terminals are used for outputting a signal having a second current value I2, wherein a ratio of the first current value I1 and the second current value I2 is related to a force.

In one embodiment, the ratio value may 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 proportional 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: 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, wherein the second metal plate is located between the first metal plate and the third metal plate; and an inclined surface mechanism is used for bending the first circuit board to the top of the first circuit board.

One of the features of the present invention is to provide a force sensor, comprising: 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 boards are parallel and include a second metal plate and a third metal plate that are not in contact with each other, the third metal plate is used to output a signal with a second current value, and the second metal plate is used to input a signal a source, wherein the second metal plate is located between the first metal plate and the third metal plate; and an inclined surface mechanism for bending the first circuit board above the first circuit board.

In one embodiment, the portion of the first metal plate is located where the first circuit board is bent.

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

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

One of the features of the present invention is to provide a force sensor, comprising: a first circuit board, including a first metal plate and a third metal plate that are not in contact with each other, respectively for receiving a first frequency group a signal of a second frequency group 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; The first circuit board is bent over a circuit board.

One of the features of the present invention is to provide a force sensor, comprising: a first circuit board, including a first metal plate and a third metal plate not in contact with each other, for outputting a first current value respectively 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 ramp mechanism for feeding the first circuit board Bend the first circuit board above.

In one embodiment, the force sensor further includes a supporting element for supporting 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 one embodiment, the first circuit board and the second circuit board are both printed circuit boards.

One of the features of the present invention is to provide a force sensor, comprising: a first circuit board, including a first metal plate and a third metal plate that are not in contact with each other, and are respectively used to receive a first frequency group 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 circuit board The circuit boards are parallel, including a fourth metal plate and a fifth metal plate that are not in contact with each other, respectively used for receiving the signal of the first frequency group and the signal of the second frequency group; 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 support 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 second metal plate are parallel to each other, and the first metal plate is parallel to each other. The two metal plates and the fifth metal plate are parallel to each other. In another embodiment, the first The distance between the 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 second metal plate and the fifth metal plate the distance.

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 one 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 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 values of the third capacitor and the fourth capacitor are the same. In another embodiment, the impedance values of the first capacitor and the third capacitor are the same, and the impedance values of the second capacitor and the fourth capacitor are the same.

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

One of the features 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 for receiving a signal of a second frequency group, the second metal plate and the fifth metal plate are electrically coupled to each other, and are used for outputting an electrical signal; a third circuit board includes a sixth metal plate a board for receiving signals of the first frequency group, wherein the second circuit board is sandwiched between the first circuit board and the third circuit board; and a ramp mechanism for sending signals to the first circuit board The first circuit board is bent above, and the third circuit board is bent below the third circuit board.

In one embodiment, the force sensor further includes a first support 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 one embodiment, the first metal plate is located above the sixth metal plate.

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

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

One of the features 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 plate is 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 is used for Can be bent under force.

One of the features 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 plate is The board is used for outputting a signal with a first current value, the third metal board is used for outputting a signal with a second current value, the second metal board is used for inputting a signal source, wherein one end of the second metal board Can be bent under force.

In one 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 values of the first capacitor and the second capacitor are the same.

One of the features 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 plate is The plate is used to output an electrical signal, and the second metal plate is used to receive a first frequency group The third metal plate is used for receiving a signal of a second frequency group, wherein one end of the first metal plate can be bent under force.

One of the features 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 plate is The plate is used for inputting a signal source, the second metal plate is used for outputting a signal with a first current value, the third metal plate is used for outputting a signal with a second current value, and one end of the first metal plate is used for outputting a signal with a second current value. Can be bent under force.

In one 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 features of the present invention is to provide a transmitter, comprising: a movable element for moving along the axial direction 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 for forming a force-induced capacitance with the movable element and the insulating material.

In one embodiment, the transmitter further includes a tip segment located at the front end of the movable element. In one embodiment, the pen tip section is a conductor electrically coupled to the movable element. In another embodiment, the pen tip section 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 casing, the elastic element is used for the elastic force between the movable element and the casing, so that the movable element is subjected to the elastic force , move 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 of 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 chamber of the housing. In another embodiment, the inner chamber is cylindrical.

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

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

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

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 that are parallel to each other and arranged in sequence; and a double-slope device, wherein the first circuit board is A first end of the circuit board and a first end of the third circuit board respectively abut against the two inclined surfaces of the double inclined surface device, a first end of the second circuit board is not in contact with the double inclined surface device, the The first end of the second circuit board includes a circuit, a second point and a third point above and below the circuit are respectively a first point of the first circuit board and a fourth point of the third circuit board short circuit and electrically coupled.

In one embodiment, when the double-slope device moves toward the direction of the second circuit board, the first circuit board and the third circuit board are pressed by the double-slope device to bend up and down respectively, so that the first circuit board and the third circuit board are respectively bent up and down. One point is open and electrically uncoupled to the second point and the third point is open and electrically uncoupled to the fourth point.

In one embodiment, the first point is connected in parallel to a first connection port and a high potential, 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 level, and when the first point and the second point are open or the third point and the fourth point are open, the first connection port is at a high level.

In one embodiment, the dual bevel device is connected to a tip segment of a transmitter.

In one embodiment, the circuit is located on the edge of the first end 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 that are parallel to each other and arranged in sequence; and a double-slope device, wherein the first circuit board is A first end of the circuit board and a first end of the third circuit board respectively abut against the two inclined surfaces of the double inclined surface device, a first end of the second circuit board is not in contact with the double inclined surface 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 of the first circuit board.

In one embodiment, when the double-slope device moves toward the direction of the second circuit board, the first circuit board and the third circuit board are pressed by the double-slope device to bend up and down respectively, so that the first circuit board and the third circuit board are respectively bent up and down. One point is open to the second point and is not electrically coupled.

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

In one embodiment, the dual bevel device is connected to a tip segment of a transmitter.

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

One of the features of the present invention is to provide a touch pen, comprising: a control unit, a pen tip, and a circuit switch, wherein the circuit switch includes a first circuit board and a second circuit that are parallel to each other and arranged in sequence 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 two slopes of the second circuit board are not in contact with the double slope device. 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 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-slope device moves toward the direction of the second circuit board, the first circuit board and the third circuit board are pressed by the double-slope device to bend up and down respectively, so that the first circuit board and the third circuit board are respectively bent up and down. 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, the control unit is woken up when the first connection port changes from a low level to a high level.

One of the features of the present invention is to provide a touch pen, comprising: a control unit, a pen tip, and a circuit switch, wherein the circuit switch includes a first circuit board and a second circuit that are parallel to each other and arranged in sequence 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 is separated from a first end of the third circuit board Do not press against the two slopes of the double slope device, a first end of the second circuit board is not in contact with the double slope device, the first end of the second circuit board includes a circuit, a circuit The second point is short-circuited and electrically coupled to a first point of the first circuit board, the first point is connected in parallel with a first connection port of the control unit and a high potential, the second point is connected to a low potential, the first A connection port is low potential.

In one embodiment, when the double-slope device moves toward the direction of the second circuit board, the first circuit board and the third circuit board are pressed by the double-slope device to bend up and down respectively, so that the first circuit board and the third circuit board are respectively bent up and down. 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, the control unit is woken up when the first connection port changes from a low level to a high level.

One of the features of the present invention is to provide a signaling method for controlling a transmitter, comprising: sending a first-period electrical signal within a first period; and sending a second-period electrical signal within a second period, The signal frequency groups included in the first period electrical signal and the second period electrical signal are different.

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

One of the features of the present invention is to provide a touch system, the touch system includes: a transmitter, a touch panel, and a touch processing device connected to the touch panel, for a first time period The transmitter is detected by an electrical signal and a second-period electrical signal, wherein the transmitter is used for sending out the first-period electrical signal within a first period; and sending out the first-period electrical signal within a second period The second period electrical signal is output, wherein the first period electrical signal and the second period electrical signal include different signal frequency groups.

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

In one embodiment, the first period is after the transmitter detects a lighthouse 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 period and the second period.

In one embodiment, the second period is followed by a third delay time.

In one embodiment, a jamming signal is detected before the transmitter detects the lighthouse signal. 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 an embodiment, when the tip of the transmitter does not touch the object, a first signal source and a second signal source of the transmitter are made to simultaneously emit the same signal frequency group.

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

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

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

Please refer to the above Table 2. In one embodiment, when the pen tip is in contact with an object and a second switch of the transmitter is open, the first signal is generated from the second period to emit a third signal frequency group group, when the pen tip section contacts an object and the second switch is short-circuited, the first signal originates from the second period to emit 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 A force of the letter.

In one embodiment, the signaling method further includes causing a ring-shaped electrode to emit an electrical signal during a zeroth period during a zeroth period, wherein the zeroth period is when the transmitter detects a light After the tower 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 not to send out an electrical signal during the first period and the second period.

In one embodiment, the signal frequency group included in the zero-th time period electrical signal and the first time period electrical signal and the second time period electrical signal is different.

One of the features of the present invention is to provide a signaling method for controlling a transmitter, comprising: sending a first-period electrical signal within a first period; and sending a second-period electrical signal within a second period, The signal frequency group included in the electrical signal of the first period and the electrical signal of the second period is the same.

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

One of the features of the present invention is to provide a touch system, the touch system includes: a transmitter, a touch panel, and a touch processing device connected to the touch panel, for a first time period The transmitter is detected by an electrical signal and a second-period electrical signal, wherein the transmitter is used for sending out the first-period electrical signal within a first period; and sending the second-period electrical signal within a second period , wherein the first period electrical signal and the second period electrical signal include the same signal frequency group.

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

In one embodiment, the first period is after the transmitter detects a lighthouse 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 period and the second period.

In one embodiment, the second period is followed by a third delay time.

In one embodiment, a jamming signal is detected before the transmitter detects the lighthouse signal. 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 the above Table 3. In one embodiment, when the tip of the transmitter does not touch the 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 3 above. In one embodiment, when the pen tip section is not in contact with an object and a first switch of the transmitter is open, the first signal source and the second signal source simultaneously emit the same signal. The first signal frequency group, when the pen tip section is not in contact with the object and the first switch is short-circuited, the first signal source and the second signal source simultaneously send out the same second signal frequency group, wherein the first signal frequency group The group of signal frequencies is different from the second group of signal frequencies.

Please refer to Table 3 above. In one embodiment, when the pen tip section is not in contact with an object and a second switch of the transmitter is open, the first signal source and the second signal source simultaneously emit the same The first signal frequency group, when the pen tip section is not in contact with the 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, wherein the first signal frequency group The group of signal frequencies is different from the third group of signal frequencies.

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

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

Please refer to the above Table 4. In one embodiment, when the pen tip is in contact with an object and a second switch of the transmitter is open, the first signal originates from the second period to emit a third signal frequency group group, when the pen tip section contacts an object and the second switch is short-circuited, the first signal originates from the second period to emit 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 causing a ring-shaped electrode to emit an electrical signal during a zeroth period within a zeroth period, wherein the zeroth period is after the transmitter detects a lighthouse 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 not to send out an electrical signal during the first period and the second 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, the first signal source and the second signal source are respectively at the second time A ratio of a first signal strength M1 to a second signal strength M2 emitted by the segment and the first period corresponds to a force on the transmitter.

One of the features of the present invention is to provide a detection method for detecting a transmitter, comprising: detecting an electrical signal of a first period sent by the transmitter within a first period; and detecting an electrical signal of a first period during a second period A second period electrical signal sent by the transmitter is internally detected, wherein the first period electrical signal and the second period electrical signal include different signal frequency groups.

One of the features of the present invention is to provide a touch processing device for detecting a transmitter, which is used for connecting a touch panel, the touch panel comprising a plurality of first electrodes and a plurality of second electrodes and formed by overlapping places. a plurality of sensing points of A second period electrical signal is sent out, wherein the first period electrical signal and the second period electrical signal include different signal frequency groups.

One of the features of the present invention is to provide a touch system, the touch system includes: a transmitter, a touch panel, and a touch processing device connected to the touch panel, for according to the first time period The transmitter is detected by the electrical signal and the second period electrical signal, wherein the transmitter is used for sending a first period electrical signal within a first period; and sending a second period electrical signal within a second period , wherein the signal frequency groups included in the first period electrical signal and the second period electrical signal are different.

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

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

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

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

In one embodiment, a jamming signal is detected before the beacon signal is sent. In another embodiment, after the first period, an interference signal is detected. In another embodiment, after the second 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 simultaneously transmits a single signal frequency group, it is determined that the tip of the transmitter does not touch the object.

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

Please refer to Table 2 above. In one embodiment, when the electrical signal in the first period and the electrical signal in the second period 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 period, it is determined that the pen tip 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 during the first period, it is determined that the pen tip 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 during the second period, it is determined that the pen tip is in contact with an object and a second switch of the transmitter is open. , when the transmitter sends out the second signal frequency group in the second period, it is determined that the pen tip 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 of a first signal strength M1 and a second signal strength M2 of the electrical signal in the first period and the electrical signal in the second period respectively; and calculating a ratio according to the ratio. A stress on the transmitter.

In one embodiment, the method further includes detecting a zeroth period electrical signal sent by the transmitter within a zeroth period, wherein the zeroth period is after the lighthouse 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 signal frequency group included in the zero-th time period electrical signal and the first time period electrical signal and the second time period electrical signal is different.

One of the features of the present invention is to provide a detection method for detecting a transmitter, comprising: detecting an electrical signal of a first period sent by the transmitter within a first period; and A second period electrical signal sent by the transmitter is detected within a second period, wherein the first period electrical signal and the second period electrical signal include the same signal frequency group.

One of the features of the present invention is to provide a touch processing device for detecting a transmitter, which is used for connecting a touch panel, the touch panel comprising a plurality of first electrodes and a plurality of second electrodes and formed by overlapping places. a plurality of sensing points of A second period electrical signal is sent out, wherein the first period electrical signal and the second period electrical signal include the same signal frequency group.

One of the features of the present invention is to provide a touch system, the touch 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 first electrodes and a plurality of second electrodes and a plurality of sensing points formed at the overlapping places, the touch processing device is used to detect a first period of electrical signals sent by the transmitter within a first period of time ; and detecting a second period electrical signal sent by the transmitter in a second period, wherein the first period electrical signal and the second period electrical signal include the same signal frequency group.

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

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

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

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

In one embodiment, a jamming signal is detected before the beacon signal is sent. In another embodiment, after the first period, an interference signal is detected. In another embodiment, after the second 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 the above Table 3. In an embodiment, when the electrical signal of the first period and the electrical signal of the second period have the same single signal frequency group, it is determined that the pen tip of the transmitter does not touch the 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 is not in contact with 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 segment is not in contact with the 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 segment is not in contact with 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 is not in contact with the 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 electrical signal of the first period and the electrical signal of the second period have the same single signal frequency group, and the electrical signal of the first period When a ratio between a first signal strength M1 of the signal and a second signal strength M2 of the electrical signal in the second period is not within a first range, it is determined that the pen tip of the transmitter is in contact with an object.

Please refer to Table 4 above. In one embodiment, when the transmitter sends a first signal frequency group during the first period and the ratio is not within the first range, it is determined that the pen tip is in contact with an object and A first switch of the transmitter is open. When the transmitter sends a second signal frequency group during the first period and the ratio is not within the first range, it is determined that the pen tip is in contact with an object and the transmitter 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 a third signal frequency group during the second period and the ratio is not within the first range, it is determined that the pen tip is in contact with an object and A second switch of the transmitter is open. When the transmitter sends a second signal frequency group during the second period and the ratio is not within the first range, it is determined that the pen tip is in contact with an object and the transmitter 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 of a first signal strength M1 and a second signal strength M2 of the electrical signal in the first period and the electrical signal in the second period respectively; and calculating a ratio according to the ratio. A stress on the transmitter.

In one embodiment, the method further includes detecting a zeroth period electrical signal sent by the transmitter within a zeroth period, wherein the zeroth period is after the lighthouse 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 is the same as the signal frequency group 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 transmitter, comprising: a pen tip segment; and an annular electrode surrounding the pen tip segment, the pen tip segment and the annular electrode are not electrically coupled.

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

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

In one embodiment, the electrical signals emitted by the annular electrode and the pen tip segment include the same set of signal frequency groups. In another embodiment, the ring-shaped 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-shaped electrode surrounding the tip section. The electrical properties of the tip section and the ring-shaped electrode are Without coupling, the detection method includes: detecting the electrical signal emitted by the ring-shaped electrode and the pen tip section at the same time during a zeroth period; and detecting the electrical signal emitted by the pen tip section during a first period.

One of the features of the present invention is to provide a touch processing device for detecting the position of a transmitter, wherein the transmitter includes a pen tip section and an annular electrode surrounding the pen tip section, the pen tip section and the annular electrode are electrically uncoupled, the touch processing device is connected to a touch panel, the touch panel includes a plurality of first electrodes and a plurality of second electrodes and a plurality of sensing points formed by their overlaps, the touch processing The device is used for detecting the electric signal sent by the ring-shaped electrode and the tip section at the same time during a zero period; and detecting the electrical signal sent by the tip section during a first period.

One of the features of the present invention is to provide a touch control system, which includes a device, a touch panel, and a touch processing device connected to the touch panel, wherein the transmitter includes a pen tip segment and an annular electrode surrounding the pen tip segment, the pen tip segment and the annular 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 them, and the touch processing device is used for detecting the ring-shaped ring in a zeroth time period The electric signal sent by the electrode and the tip section at the same time; and the electrical signal sent by the tip section is detected in a first period.

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

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

In one embodiment, the method further includes calculating a first center of gravity position of the transmitter according to the electrical signal detected in the zeroth period. In another embodiment, the method further includes calculating a second center of gravity position of the transmitter according to the electrical signal detected in the first period.

In one embodiment, according to the position of the first center of gravity and the position of the second center of gravity, the position of a surface where the transmitter contacts a touch panel is calculated, wherein the position of the surface is the axis of the pen tip section of the transmitter and the position of the touch panel. The location where the surface layers of the touch panel meet.

In one embodiment, according to the first center of gravity position and the second center of gravity position, a display position of the transmitter touching a touch panel is calculated, wherein the display position is the axis of the pen tip section of the transmitter and the The position where the display layers of the touch panel meet.

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

One of the features of the present invention is to provide a computing transmitter that contacts a touch surface A method for the position of a surface of a board, the method comprising: receiving a first centroid position of the transmitter, the first centroid position being determined according to an electrical signal emitted by an annular electrode of the transmitter and a pen tip segment Calculated; receiving a second center of gravity position of the transmitter, the second center of gravity position is calculated according to the electrical signal sent by the pen tip segment; and according to the first center of gravity position and the second center of gravity position, calculate the The surface position, wherein the surface position is the position where the axis of the pen tip section of the transmitter meets the surface layer of the touch panel.

One of the features of the present invention is to provide a method for calculating a display position of a transmitter touching a touch panel, the method comprising: receiving a first center of gravity position of the transmitter, the first position of the center of gravity is based on the Calculated by a ring-shaped electrode of the transmitter and the electrical signal sent by the pen tip segment; receiving a second center of gravity position of the transmitter, the second center of gravity position is calculated according to the electrical signal sent by the pen tip segment and calculating the display position according to the first center of gravity position and the second center of gravity position, wherein the display position is the position where the axis of the pen tip section of the transmitter meets the display layer of the touch panel.

One of the features of the present invention is to provide a method for calculating an inclination angle of a transmitter touching a touch panel, the method comprising: receiving a first center of gravity position of the transmitter, the first position of the center of gravity is based on the Calculated by a ring-shaped electrode of the transmitter and the electrical signal sent by the pen tip segment; receiving a second center of gravity position of the transmitter, the second center of gravity position is calculated according to the electrical signal sent by the pen tip segment and calculating the inclination angle according to the first center of gravity position and the second center of gravity position.

In one embodiment, the method further includes calculating the first center of gravity position during a zeroth period. In another embodiment, the method further includes calculating the second center of gravity position during a first period. In one embodiment, the first period is after the zeroth period. In one embodiment, the ring electrode and the pen tip Each segment emits different signal frequency groups.

One of the features of the present invention is to provide a display method, comprising: 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 one embodiment, the location includes one of: a first center of gravity location; a second center of gravity location; a surface location; and a display location, wherein the first center of gravity location is based on a ring of the transmitter The position of the second center of gravity is calculated according to the electrical signal sent by the pen tip segment, and the surface position is the axis of the pen tip segment of the transmitter and a touch point. The position where the surface layer of the touch panel meets, and the display position is the position where the axis of the pen tip section of the transmitter meets the display layer of the touch panel. In one embodiment, the ring-shaped electrode and the pen tip section respectively emit different signal frequency groups.

In one embodiment, the display range includes an ellipse. In another embodiment, the location is at one of: the center of the ellipse; one of the foci of the ellipse; and one of the intersection points of the line connecting the bifocal points of the ellipse and the ellipse. In one embodiment, the connecting line direction of the elliptical bifocals corresponds to the direction of the inclination angle.

In one embodiment, the display area includes a teardrop shape. In another embodiment, the location is at one of: the center of the teardrop; the apex of the teardrop; and the endpoint of the teardrop. In one embodiment, the teardrop direction corresponds to the direction of the tilt angle.

In one 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 yet another embodiment, the color of the display range corresponds to one of: the magnitude of the tilt angle; and the direction of the tilt angle.

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

One of the features of the present invention is to provide a signaling method for a transmitter, comprising: when a force sensor of the transmitter does not sense a force, transmitting a first electrical signal with a first signal strength a signal; and when the force sensor senses a force, sending out 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 segment of the transmitter.

In one embodiment, the transmitter further includes an annular electrode, wherein the first electrical signal is sent from the pen tip section and the annular electrode, and the second electrical signal is sent from the tip section.

One of the features of the present invention is to provide a transmitter, comprising: a force sensor; and a control module for: when the force sensor does not sense force, the transmitter Sending a first electrical signal with a first signal strength; and when the force sensor senses a force, causing the transmitter to send a second electrical signal with a second signal strength, wherein the first signal The strength is greater than the second signal strength.

Code Division Multiple Access (CDMA) is a wireless spread spectrum communication technology adopted by the third generation mobile communication services. In wireless communication technology, spread spectrum means 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 bandwidth can better tolerate the interference noise signal received during the transmission process. One of the spread spectrum techniques is a modulation technique of Direct Sequence Spreading Spectrum (DSSS). The DSSS modulation technique utilizes a bit sequence code called Pseudo Noise (PN, Pseudo Noise). This bit sequence code or virtual random code contains multiple short-cycle pulse waves, and the cycle of each pulse wave is The period or chip, 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. Converting 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 that of the virtual random code.

In the modulation process of the carrier signal, the data code and the virtual random number are mainly multiplied, and the so-called virtual random number here is usually a pseudo random sequence (pseudo random sequence), which 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 the string of virtual random codes, it can know the content code contained in the carrier signal as long as the despreading action is performed.

Please refer to FIG. 30 , which is a waveform diagram of the spread spectrum technique. The waveform at the top of Figure 30 is the data code, the waveform in the middle is the pseudo random number code, which is the so-called virtual random number, and the bottom is the waveform of the carrier signal. It can be known that when the potential of the data code is high, the waveform of the carrier signal is just opposite to that 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 receiver 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 is the same as that of the virtual random code, it can be inferred that the potential of the data code is low. Accordingly, as long as the virtual random code 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 styluses 111 and 112 are active styluses.

In some embodiments, the active stylus 111 or 112 can be made to The sensing value of the detector is compiled into the above-mentioned data code. The so-called sensing value of the sensor can include but is not limited to the following: the pressure value of the pen tip, the sensing value of whether the button is pressed, the attitude sensing value of the gyroscope, the acceleration sensing value of the accelerometer , the sensing value of battery power, the serial number value of the pen body, the strength of the wireless signal accepted by the pen body, etc. Then, the active stylus 111 or 112 encodes the above-mentioned data code into a carrier signal after frequency spread according to a certain virtual random code. Then, the electric signal including 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 information can be obtained: the position where the active stylus 111 or 112 is close to the touch screen , the virtual random digital form 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 and align the received carrier signal with the virtual random code in order to obtain the correct data code. However, when the active stylus 111 or 112 sends 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 and a known virtual random code 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 out of sync, the calculated value of their correlation operation will not exceed a threshold. Conversely, when the two signals are synchronized, the calculated value of their relative operation will exceed the threshold. When the two signals are not synchronized, the receiver can adjust its delay time repeatedly until the two signals are synchronized or aligned.

In an embodiment of the present invention, the electrical signal or the carrier signal sent by the active stylus may include a signal frame, and the signal frame further includes a preamble and subsequent data code segments. The data segment can be used to transmit a sensing state of a sensor on the stylus. lift 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 in different time periods to notify the state of the sensor thereof. In another variation of this embodiment, different active stylus pens may have different preambles and/or virtual random numbers, so that the touch processing device 130 can identify and/or distinguish the touch screen 120 that simultaneously approaches the touch screen 120 . At least 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 a second preamble modulated by a second virtual random number Prefix. Then, according to the first virtual random code and the second virtual random code, the touch processing device 130 demodulates or despreads the received signal, and can determine whether the first preamble and/or the received signal are received. 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 virtual random number according to the corresponding first virtual random number and the second virtual random number respectively. The active stylus 112 approaches 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 frames sent by the first active stylus 111 and the second active stylus 112 respectively, and then Decode the data segment after the signal frame.

In an embodiment of the present invention, for the purpose of fast synchronization, a plurality 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 skilled in the art can understand that when the touch processing device 130 has When the virtual random code and the preamble to be transmitted are known, the carrier signal can be synchronized by conventional techniques, or the phase shift between the carrier signal and the local oscillation signal can be found. After confirming the phase difference between the two, the first electrode 121 that has received the electrical signal can be used to decode subsequent data code segments, so as to know the sensor state transmitted by the active stylus 111 or 112 .

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

In another embodiment of the present invention, the decoding step of the data code segment 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 most identical ones can be taken as the data codes.

In addition, among the carrier signals received by the plurality of first electrodes 121 , after the obtained phase difference adjustment, the one most related to the local oscillation signal should have the least noise, which is usually the one closest to the active stylus 111 or 112 of the first electrode 121 at a position close to it. Accordingly, the position of the active stylus 111 or 112 and each of the first electrodes 121 can also be calculated according to the deviation value of a plurality of correlation values of the carrier signal received by each of the first electrodes 121 after the above-mentioned phase difference adjustment. . 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 solving 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 in 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 numbering of the steps in FIG. 32 does not affect the order in which the steps are executed. 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 as a synchronization channel. The touch processing device 130 may use an analog switch or a digital adder to implement this step. In a variation, the above-mentioned synchronization channel connects all of the second electrodes.

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

Step 3230: Decode a first data code following the first preamble in the signal received by at least one first electrode using the first synchronization message and the first virtual random code.

In a variation, the above-mentioned electrical signal for deciphering the first data code comes from the first electrode that receives the largest amount of electrical signal. In another variation, the above-mentioned electrical signals used for solving the first data code come from a plurality of the first electrodes. In a derivative variation, the method further includes: calculating a plurality of deviation values of the signal correlation values of the plurality of first electrodes according to the first synchronization message; and calculating the first active stylus at the the position of the second axis.

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

Step 3250: Decode a second data code following the second preamble in the signal received by at least one first electrode according to the second synchronization message and the second virtual random code.

In a variation, the above-mentioned electrical signal for deciphering the second data code comes from the first electrode that receives the largest amount of electrical signal. In another variation, the above-mentioned electrical signals used for solving the second data code come from a plurality of the first electrodes. In a derivative variation, the method further includes: calculating a plurality of deviation values of the signal correlation values of the plurality of first electrodes according to the second synchronization message; to 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 a plurality of active stylus 111 and 112 operate at the same time, these active stylus pens can send out signals at the same time. As long as these active styluses use different virtual random codes, even if they send signals at the same time, the touch processing device 130 can distinguish the signal frame and the data code from the received signals.

In one embodiment, the present invention provides a method for solving a spread spectrum signal, 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 first electrodes parallel to the second axis For the second electrode, the method for deciphering the spread spectrum signal includes: connecting at least two of the plurality of second electrodes into a synchronization channel; deciphering a first one of the signals received by the synchronization channel by using a first virtual random code a first preamble of a 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, wherein 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: pressure on the tip of the pen; The sensing value of whether the button is pressed; the attitude sensing value of the gyroscope; the acceleration sensing value of the accelerometer; the sensing value of the battery power; the serial number value of the pen body; and the wireless signal strength received by the pen body, etc.

In certain embodiments, wherein the above-mentioned synchronization channel connects all of the second electrodes.

In certain embodiments, wherein the telecommunications used to solve the first data code described above The signal comes from the first electrode that receives the largest amount of electrical signal.

In a specific embodiment, the above-mentioned electrical signal used for deciphering the first data code comes from a plurality of the first electrodes. The method for solving the spread spectrum signal further comprises: calculating a plurality of deviation values of the signal correlation values of the plurality of first electrodes according to the first synchronization information; the position of the second axis.

In a specific embodiment, the method for solving a spread spectrum signal further comprises: using a second virtual random code to solve a second preamble of a second signal frame of a 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 following the second preamble in the signal 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 certain embodiments, the first signal frame and the second signal frame described above are at least partially present 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 includes a plurality of first electrodes parallel to a first axis and a plurality of first electrodes 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, the touch processing device being used for: connecting at least two of the plurality of second electrodes as a a synchronization channel; using a first virtual random code to solve 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 following the first preamble in at least one signal received by the first electrode.

In one embodiment, the present invention provides a touch processing device for solving a spread spectrum signal. The device is used for connecting a plurality of first electrodes parallel to the first axis and a plurality of second electrodes parallel to the second axis on a touch screen, and the touch processing device is used for: connecting the plurality of second electrodes at least two connections are a synchronization channel; use a first virtual random code to solve a first preamble of a first signal frame of a signal received by the synchronization channel to obtain a first synchronization message; and use the first A synchronization message and the first virtual random code decode a first data code following the first preamble in at least one signal received by the first electrode.

In a specific embodiment, wherein 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: pressure on the tip of the pen; The sensing value of whether the button is pressed; the attitude sensing value of the gyroscope; the acceleration sensing value of the accelerometer; the sensing value of the battery power; the serial number value of the pen body; and the wireless signal strength received by the pen body, etc.

In certain embodiments, wherein the above-mentioned synchronization channel connects all of the second electrodes.

In a specific embodiment, the above-mentioned electrical signal for deciphering 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 for deciphering the first data code comes from a plurality of the first electrodes. The touch processing device is further configured to: calculate a plurality of deviation values of the signal correlation values of the plurality of first electrodes according to the first synchronization information; The position of the two axes.

In a specific embodiment, the touch processing device is further configured to: use a second virtual random code to solve a second preamble of a second signal frame of a signal received by the synchronization channel to obtain a second synchronization message; and using the second synchronization message and the second virtual random number, to A second data code following the second preamble is decoded in the signal received by one less first electrode, wherein the above-mentioned second signal frame comes from a second active stylus close to the touch screen.

In certain embodiments, the first signal frame and the second signal frame described above are at least partially present 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 Nib segment 230. The controller 3310 is used to generate two different virtual random code 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 processors. The signal processor and/or processor can execute one or more instruction sets, such as ARM instruction set, Intel 8051 instruction set, and the like.

The battery 3330 may be rechargeable or non-rechargeable. The controller 3310 may include charging circuitry 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 that 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 for the data signal or the carrier signal. As shown in Figure 30, the frequency of the data code is slower than that of the carrier signal. The clock signal module 3320 is used to provide one or more clock signals to the above-mentioned encoding process.

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. It means that any two virtual random numbers are orthogonal.

In one embodiment, the mapping relationship between the signal 3311 and the virtual random code can be set and stored in the controller 3310 . For example, 10 virtual random numbers can be stored in some active stylus 111 . 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 groups of virtual random numbers sent from the stylus 111 simultaneously. The position of each stylus 111 can be determined according to the electrical signal sent by the tip section 230 .

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

The visual effect indicator may comprise a plurality of light bulbs, light emitting diodes, or equivalent devices, where each light is associated with each set of virtual random numbers. In other examples, the visual effect indicator may include a light-emitting diode that may blink one or more times within a short period of time to display the mapped virtual random combination. Alternatively, the visual effect indicator may display a different color to display the set of virtual random numbers.

Similarly, the sound indicator may include a buzzer for alerting the user by the number of beeps in a short period of time. Alternatively, a loudspeaker may be used to output speech 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 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 being set.

In addition to the physical HMI, the stylus 111 may include a communication unit to receive the settings from the remote machine to the controller 3310 . The communication unit may conform to wired or wireless industry standard interfaces, such as Bluetooth, USB, wireless USB, UWB, and the like. 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, mobile computers, and the like. 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 a conflict between the virtual random numbers used by the connected stylus 111 , 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 hard-set before leaving the factory. The stylus 111 can be painted with a specific color or display a visual effect mark on the stylus. The user can check the color or visual indication of his stylus 111 . If they use stylus 111 of different colors, the touch processing device 130 can identify each stylus 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 the like. The controller 3310 may periodically collect the status of these HMIs or sensors. these states 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 adjust the data code and the first virtual random code to be transmitted. Those of ordinary skill in the art can understand that DDMA 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. Conventionally, a multiplier is required to generate a carrier signal based on the data code and the virtual random code. If no data code needs to be sent, the signals 3311 and 3312 received by the pen tip section 230 may 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 code to generate the signal 3311 . The signal 3312 can also be generated by modulating the data code according to the second virtual random code. In other words, data segments may be transmitted via one or both of the signals 3311 and 3312 . The touch processing device 130 can despread or decode the data code transmitted by the pen tip 230 according to one of the first and the second virtual random codes. 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 authentic. Otherwise, the 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 paragraphs, the touch processing device 130 can send out a beacon signal for synchronization through the electrodes of the touch panel 120 . The nib section 230 may 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 may be connected to the nib segment 230 to receive the beacon signal. In order to properly receive and identify the lighthouse signal, the processor 3310 may include circuits such as integrators, samplers, amplifiers, analog-to-digital converters, home appliances, and any other circuitry to receive the lighthouse signal. The received signal can be further received by the processor to obtain the lighthouse signal carried by the interference Sync signals and/or messages from the band. Upon receiving the beacon signal, the controller 3310 may transmit the signals 3311 and 3312 through the pen tip section 230 after a predetermined turnaround period known to the touch processing device 130 . Alternatively, the beacon signal may contain a period parameter indicating the length of the turnaround period.

If there are multiple stylus pens 111 operating in the touch control system 100, the lighthouse signal without any turnaround period will cause all stylus pens 111 to emit electrical signals at the same time. However, since the electrical signals emitted by these stylus 111 are encoded by different virtual random numbers, the touch processing device can identify each stylus 111 .

In one embodiment, the lighthouse signal may further include an identification code and a rotation period corresponding to one of the styluses. If one of the styluses 111 receives a beacon signal containing its identification code, the stylus can emit the electrical signal through the tip section 230 after a turnaround period specified in accordance with the beacon signal. In order to avoid or reduce interference in the touch system 100, the touch processing device 130 may send a lighthouse signal including multiple sets of stylus identification codes and their designated turnaround periods or time slots.

In another approach, the touch processing device 130 can transmit a plurality of lighthouse signals 111 . The lighthouse signals are modulated in different ways. For example, the modulation of the lighthouse signals may vary according to frequency, phase, amplitude, and the like. Therefore, each of the styluses 111 can listen to its assigned lighthouse signal.

In one embodiment, the touch control system 100 may include differently modulated lighthouse signals to different groups of stylus 111 . Each modulated beacon signal can contain multiple sets of stylus identification codes and their designated turnaround periods or time slots. The touch processing device 130 can control the update frequency of each modulated lighthouse signal. When one of the stylus 111 is stationary, it is sent to the The beacon signal of the stylus 111 can be delayed or even skipped. When one of the stylus 111 is vigorously active, the touch processing device 130 can transmit the beacon signal to the stylus 111 more frequently than other stylus 111, so as to obtain the stylus more frequently and more accurately. The location and data code of the stylus. Those skilled 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 approach, the beacon signal may be issued by the host 140 . For example, the touch processing device 130 may use a wireless communication unit equipped in the host 140 to transmit the lighthouse signal. According to the regulations 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 by the broadcast mechanism of the Bluetooth protocol. Any stylus that receives the advertising message as a beacon signal can thus be synchronized. Otherwise, the beacon signal can be wirelessly unicast from the host 140 to the stylus 111 . Those skilled in the art can understand that the synchronization between the stylus 111 and the touch processing device 130 can be synchronized by the beacon signal transmitted by the touch panel 120, or by the wired or wireless communication channel between the two. achieved.

Although it can be achieved by the lighthouse 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 the second virtual random numbers. Finally, the electrical signal sent by the nib segment 230 includes the preamble and/or the data code. Once the touch processing device 130 receives the electrical signal through the touch panel 120, the received electrical signal is amplified, sampled, converted into a digital form and stored in a memory. Therefore, the circuit of the touch processing device 130 or the processor embedded therein can compare the stored signal with the corresponding preamble of the touch pen 111 . when the stored When all or part of the signal matches the preamble, the touch processing device 130 can calculate the reception 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 may be fast enough that the data code of the same transmission can be decoded. Especially when the length of the preamble is long enough. The preamble can be found using a sliding window technique for the stored signal in memory.

When the preamble is found, the touch processing device 130 can calculate a position where the touch pen 111 contacts or is close to the touch panel 120 according to the received signal. When two or more stylus 111 use different sets of virtual random numbers, the preambles used by these stylus 111 are different and orthogonal. Even when the preambles are received at the same time, the touch processing device 130 can find the positions of the touch pens 111 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 of the first electrodes 121 and each of the second electrodes 122 through the connection network 3410 to send a driving signal. The sensing circuit 3430 can respectively connect each of the first electrodes 121 and each of the second electrodes 122 through the connection network 3410 to sense signals using these electrodes. 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 proximity objects or events.

The embedded processor 3440 can dynamically connect 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 . Similarly, the sensing circuit 3430 can be connected to one or more of the first electrodes 121 and/or each of the second electrodes Pole 122. In one embodiment, the driving circuit 3420 and the sensing circuit 3430 are collectively referred to as an analog front-end circuit, which may include amplifiers, filters, samplers, integrators, digital-to-analog converters, analog-to-digital converters, and adders , multipliers, variable resistors and other components in any combination. In addition to the analog circuit including the driving circuit 3420 and the sensing circuit 3430, the embedded processor 3440 can perform signal processing of the digital part. The host interface 3450 is used to connect the embedded processor 3440 and the host 140 . Typically, the host interface 3450 may be compatible with industry standards such as USB, I2C, PCI, PCI-Express, SCSI, and the like. Those skilled 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 implementation 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 a causal relationship is specifically written, the present invention does not limit the execution order of any two steps in FIG. 35 .

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

Optional step 3520: Receive a lighthouse signal. The touch processing device 130 can send a lighthouse signal to the touch pen 111 through at least one first electrode 121 or 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 turnaround period parameter. If optional step 3520 is performed and a beacon signal is received, the beacon signal may contain an identification code and/or turnaround period parameters for a particular stylus 111 or group of styluses. Accordingly, the identification code and/or the turnaround period parameter of the stylus 111 in the beacon signal is obtained by decoding.

Optional step 3540: Generate a data code according to the state of the sensor on the stylus. If the stylus 111 includes, in addition to the pressure sensor connected to the first element 221, one or more sensors on the pen, such as buttons, switches, knobs, battery capacity, etc., a response may be generated on these pen 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 pen 111 .

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

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

Please refer to FIG. 36A , which is a schematic flowchart of the implementation of the embedded processor 3440 according to an embodiment of the present invention. This process can be applied to the touch processing apparatus 130 shown in FIG. 33 and FIG. 34 . Unless a causal relationship is specified, the present invention does not limit the execution order of any two steps in FIG. 36A. Assuming that the touch control system 100 uses the beacon signal as the synchronization signal, the process starts from step 3610 .

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

Optional step 3620: Wait for a rotation 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 the period. In other embodiments, the embedded processor 3440 may perform other functions, such as capacitive sensing during the turnaround period, to detect external conductive objects approaching 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 electrodes near the pen tip section 230 .

Optional step 3640: Despread a first preamble of the received electrical signal according to a first virtual random code. If the electrical signal sent by the touch pen 111 includes the first preamble, the embedded processor 3440 of the touch processing device 130 can despread the first preamble according to the first virtual random code. In some embodiments, the system 100 does not use the lighthouse signal to avoid the timing of transmitting electrical signals, that is, steps 3610 and 3620 are omitted, and the embedded processor 3440 may need to use the sliding window technique to obtain the received signal The first preamble among them, because the embedded processor 3440 has no way of knowing when the stylus 111 is going to transmit the electrical signal.

Optional step 3650: Despread 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 data code, the embedded processor 3440 of the touch processing device 130 can identify the first virtual random code according to the first data code. The first data code is decoded. Embodiments of the present application may include one or both of steps 3640 and 3650 .

Optional step 3660: Despread a second preamble of the received electrical signal according to a second virtual random code. If the electrical signal sent by the touch pen 111 includes the second preamble, the embedded processor 3440 of the touch processing device 130 can despread the second preamble according to the second virtual random code. In some embodiments, the system 100 does not use the lighthouse signal to avoid the timing of transmitting electrical signals, that is, steps 3610 and 3620 are omitted, and the embedded processor 3440 may need to use the sliding window technique to obtain the received signal The first preamble among them, because the embedded processor 3440 has no way of knowing when the stylus 111 is going to transmit the electrical signal.

Optional step 3670: Despread a second data code of the received electrical signal according to the second virtual random code. If the electrical signal sent by the touch pen 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 code. Embodiments 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 transmission reliability, the controller 3310 can encode data codes on both of the signals 3311 and 3312 . Accordingly, steps 3650 and 3670 can be executed to obtain the first data code and the second data code. In one embodiment, the process may further include a comparing step for comparing the first data code and the second data code. When the two data codes do not match, the process can discard the two data codes, as it is clear that an error has been made in the transmission process. However, for To reduce the complexity of the design, the flow may only include performing one of steps 3650 and 3670 , although the stylus 111 encodes the data code in both signals 3311 and 3312 .

In the embodiment lacking the lighthouse signal, assuming that the timing of transmitting the electrical signal by the stylus 111 is found in step 3640 or 3650, steps 3660 and/or 3670 may be executed according to the found timing. In other words, synchronization has been established. On the contrary, when the timing point of the electrical signal is found in step 3660 or 3670, steps 3640 and/or 3650 may be performed according to the found timing point. 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 the second preamble, and the first and the second data one of the codes. Otherwise, in one embodiment, steps 3640 to 3670 may be performed simultaneously or independently, although the sliding window technique needs to be performed more than once.

Step 3680: Calculate a pressure according to a signal strength ratio of the first part corresponding to the first virtual random number and the second part corresponding to the second virtual random number. 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 may 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 calculate one of the stylus according to the ratio of the signal strength of the first preamble and the second preamble Pressure sensor pressure. In the case 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 according to the signal strength ratio of the first data code and the second data code sensor pressure. In a variation, assuming that the electrical signal includes all four kinds of signals, the step 3680 may be to calculate the pressure of one of the pressure sensors of the stylus according to the ratio of the signal strengths of the first part and the second part. Assuming that the signal strength of the first part is M1 and the signal strength of the second part is M2, this 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 on the tip section 230 of the stylus 111 , it means that the tip section 230 of the stylus 111 is not in contact with any object including the touch panel 120 .

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

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

Please refer to FIG. 36B , which is a schematic flowchart of the implementation of the embedded processor 3440 according to an embodiment of the present invention. This process can be applied to the touch processing apparatus 130 shown in FIG. 33 and FIG. 34 . Unless a causal relationship is specified, the present invention does not limit the execution order of any two steps in FIG. 36B . Assuming that the touch control system 100 uses the beacon signal as the synchronization signal, the process starts from step 3610 .

The difference between the flowcharts shown in FIG. 36A and FIG. 36B is that steps 3630 to 3670 are Steps 3210 and 3250 shown in 32 are replaced. One of the purposes of the process 3200 is to use the coupling of at least two second electrodes as a synchronization channel to accelerate the acquisition of the preamble of one or more stylus pens. In other words, the touch processing device 130 does not use the lighthouse 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 that includes at least one stylus 111 that listens to beacon signals and other non-synchronized beacon signals stylus 111. In other words, the touch processing device 130 can cooperate with the stylus having the lighthouse signal receiving function and the stylus that does not have the function at the same time. 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 period 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 the same. Meet the specified turnaround period.

If the touch 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 timing specified by the lighthouse signal The turnaround period is such that the two styluses 111 can transmit electrical signals simultaneously, so as to minimize the period of receiving electrical signals from the styluses 111 and maximize the period of time for detecting external conductive objects such as fingers. In other embodiments, the touch processing device 130 can adjust the transmission timing of the lighthouse signal and/or the turnaround time period specified by the lighthouse signal, so that the two stylus pens 111 can send electrical signals in non-overlapping time periods, so that the Minimize interference between two electrical signals. Furthermore, since the electrical signal sent by the stylus may 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 turnaround period specified by the lighthouse signal to reduce or avoid the lighthouse signal. and the electrical signal from the stylus interference.

In the embodiments 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 touch 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, the computational complexity of the controller 3310 may need to be reduced. 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 code in two different time periods. As long as each stylus 111 within a touch system 100 is assigned a different virtual random number, the touch processing device 130 can identify all styluses 111 that may simultaneously emit electrical signals. Considering the electrical signals sent 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 strengths of the two time periods. Furthermore, the controller 3310 may collect the sensor of the stylus 111 twice to generate two data codes to be transmitted through the 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 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 a causal relationship is specified, 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.

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 encoded according to the virtual random code to a first element in the first period, the impedance value of which varies according to the pressure value. The transmission signal may be one or both of the preamble, the data code. Since they are both specified by the virtual 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 during the first period of time, encoded by the scrambled numbers.

Step 3760: Send the preamble and/or the data code encoded according to the virtual random code to a second element having a fixed impedance value during the second period. The transmission signal may be one or both of the preamble, the data code. Since they are all encoded by the designated virtual random code, 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 during the first period.

In an embodiment, there may be a turnaround period between the first period and the second period. During this 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 flowchart of 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 a causal relationship is specified, the present invention does not limit the execution order 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 includes one or more sensors in addition to the pressure sensor connected to the first element 221, such as buttons, switches, knobs, battery capacity, etc., the state of the sensors on the pen can be reflected. and/or the data code of other information, such as the identification code and/or the model and brand name of the stylus 111 .

Step 3755: During the first period of time, transmit the preamble and/or the first data code encoded according to the virtual random code to the first element, which has a variable impedance in response to pressure. The transmitted signal may contain 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 period. After step 3755, flow may 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: During the second period, transmit the preamble and/or the second data code encoded according to the virtual random code to the second element, which has a fixed impedance. The transmitted signal may contain one or both of the preamble and the second data code. Since they are all encoded by the designated virtual random code, 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 period.

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

Please refer to FIG. 38A , which is a schematic flowchart of an embedded processor 3440 according to an embodiment of the present invention. Corresponding to the flowcharts of FIGS. 37A and 37B implemented by one or more stylus pens, the present process is applicable to the touch processing device 130 shown in FIGS. 33 and 34 . Unless a causal relationship is specified, the present invention does not limit the execution order of any two steps shown in FIG. 38A. When the system 100 uses the beacon signal as the synchronization signal, the process starts from step 3610. Steps 3610 and 3620 have been described in the paragraphs of the embodiment shown in FIG. 36A. The process may execute step 3830 after step 3620 is performed.

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

Optional step 3840: Despread the electrical signal received in the first time period according to a virtual random code to obtain a first preamble. If the electrical signal transmitted by the touch pen 111 includes the first preamble, the embedded processor 3440 of the touch processing device 130 can despread the first preamble according to the virtual random code. In some embodiments, the system 100 does not use the beacon signal as the timing for synchronously transmitting electrical signals, that is, steps 3610 and 3620 are not performed, because the embedded processor 3440 does not know when the stylus 111 transmits electrical signals, it may be necessary to use The sliding window technique is used to obtain the preamble in the received electrical signal.

Optional step 3850: Decode the electrical signal received within the first time period according to the virtual random code to obtain a first data code. If the electrical signal transmitted by the touch pen 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 code. Embodiments of the present application may include one or both of steps 3840 and 3850 .

Optional step 3860: Despread the electrical signal received in the second time period according to a virtual random code to obtain a second preamble. If the electrical signal transmitted by the touch pen 111 includes the second preamble, the embedded processor 3440 of the touch processing device 130 can despread the second preamble according to the virtual random code. Please note that since the first preamble and the second preamble are encoded by the same virtual random number, they should be the same regardless of their signal strengths. In some embodiments, the system 100 does not use the beacon signal as an opportunity to transmit electrical signals synchronously, nor That is, steps 3610 and 3620 are not executed, because the embedded processor 3440 does not know when the stylus 111 transmits the electrical signal, and may need to use the sliding window technique to obtain the preamble in the received electrical signal.

Optional step 3870: Decode the electrical signal received within the first time period according to the virtual random code to obtain a second data code. If the electrical signal transmitted by the touch pen 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 code. Embodiments 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 of two time periods. If the first data code is different from the second data code, that is, the on-pen sensor changes state during the above two generation processes. Obviously, the position of the stylus may also have changed between the two productions. 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 period and the second period.

Step 3880: Calculate the pressure according to the ratio of the signal strength of the first part received in the first period to the second part received in the second period. The first part of the electrical signal received during the first period may be one or both of the first preamble and the first data code. Similarly, the second part of the electrical signal received during the second 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 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 calculate the pressure according to 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 may calculate the pressure according to the ratio of the signal strengths of the first portion received in the first period to the second portion received in the second 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 on the tip section 230 of the stylus 111 , it means that the tip section 230 of the stylus 111 is not in contact with any object including the touch panel 120 .

Please refer to FIG. 38B , which is a schematic flowchart of the implementation of the embedded processor 3440 according to an embodiment of the present invention. Corresponding to the flowcharts of FIGS. 37A and 37B implemented by one or more stylus pens, the present process is applicable to the touch processing device 130 shown in FIGS. 33 and 34 . Unless a causal relationship is stated, the present invention does not limit the execution order of any two steps shown in FIG. 38B . When the system 100 uses the beacon signal as the synchronization signal, the process starts from step 3610. Steps 3610 and 3620 have been described in the paragraphs of the embodiment shown in FIG. 36A. The process may execute step 3830 after step 3620 is performed.

Optional step 3815: Despread the first preamble for the first signal frame received on the synchronization channel within the first period according to a virtual random code to obtain a first synchronization information.

Optional step 3825: According to the first synchronization information and the virtual random code, for the electrical signal received by at least one first electrode during the first period, perform a first data code after the first preamble decoding.

Optional step 3835: According to the virtual random code, perform despreading of the second preamble on the second signal frame received on the synchronization channel within the second 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 by at least one first electrode during the second period of time decoding.

In one embodiment, once the first synchronization information corresponding to the first 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 their signal strengths. In some embodiments, the system 100 does not use the beacon signal as the timing for synchronously transmitting electrical signals, that is, steps 3610 and 3620 are not performed, because the embedded processor 3440 does not know when the stylus 111 transmits electrical signals, it may be necessary to use The sliding window technique is used to obtain 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 of two time periods. If the first data code is different from the second data code, that is, the on-pen sensor changes state during the above two generation processes. Obviously, the position of the stylus may also have changed between the two productions. 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 period and the second period.

Step 3880: Calculate the pressure according to the ratio of the signal strength of the first part received in the first period to the second part received in the second period. Telecommunications received during the first period The first part of the code can be one or both of the first preamble and the first data code. Similarly, the second part of the electrical signal received during the second 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 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 calculate the pressure according to the signal strength ratio of the first data code and the second data code. In a variation, if the electrical signal contains all four codes, step 3880 may calculate the pressure based on the ratio of the signal strengths of the first portion received in the first period to the second portion received in the second 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 on the tip section 230 of the stylus 111 , it means that the tip section 230 of the stylus 111 is not in contact with any object including the touch panel 120 .

In real world scenarios, it is not uncommon to lose the wireless stylus 111. In addition, the battery of the wireless stylus 111 also needs to be charged frequently. In some cases, it is desirable to have one or more wired styluses that actually connect to the touch system. Using the same virtual random number mechanism, the touch processing device can select the timing of transmitting signals to the wired stylus, and receive the above-mentioned signals 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 touch control system 3900 according to an embodiment of the present invention A block diagram of . 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, a connection To the nib segment 230 output from the first element 221 and the second element 222 , and a casing or container for containing the first element 221 , the second element 222 and the nib segment 230 . A connection cable is used to connect the touch pen 3910 and the touch processing device 130 . The connection cable may be a cable including twisted wires and shielding, and 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 casing, and when the user holds the stylus 3910, the casing can be grounded. Besides, the third line 3913 can be electrically coupled to the ground potential port of the touch processing device 130 .

Although only a single wired stylus 3910 is shown in FIG. 39A , in some embodiments of the present invention, multiple wired styluses 3910 connected to the touch processing device 130 may be included. Depending on the mechanism provided, multiple wire styluses 3910 can operate simultaneously. More importantly, a touch system according to embodiments of the present invention can include both wireless and limited stylus. Those skilled 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 make the wireless stylus 111 The electrical signal is transmitted while the touch processing device 130 transmits the electrical signal through the wired stylus 3910 .

The wired stylus 3910 shown in Figure 39A contains no switches or buttons. However, a wired stylus 3910 may contain one or more on-pen sensors, such as a switch or a button for accepting user input. In one embodiment, each on-pen sensor can be connected to One or more circuits in are connected to the touch processing device 130 . 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 with the first element or the second element. The touch processing device 130 can determine the switch state of the touch pen 3910 according to the signal strength ratio of the two virtual random numbers.

Please refer to FIG. 39B , which is a schematic block diagram of a variant of a touch control 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 to the first element 221 in parallel. The third element 3930 may be a resistor and/or a capacitor having a third impedance Z3. When the third switch 3920 is set as 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 . On the contrary, when the third switch 3920 is set to 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 through the first element 221 . The signal driven via the signal circuit 3912 propagates to the tip section 230 via the second element 222 . After receiving the signals sent by the signal circuits 3911 and 3912 through the pen tip section 230 , the touch processing device 130 can know the state of the third switch 3920 according to the ratio of the signal strengths sent by the signal circuits 3911 and 3912 . Assuming that the ratio falls within a first range, the touch processing device 130 determines that the third switch 3920 is in an open state. Assuming that the ratio falls within a second range, 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 calculate the pressure on the first element 221 according to the ratio value falling within the first interval or the second interval.

Please refer back to FIG. 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 will understand that the wired stylus 3910 may have more than one set of third switches 3920. The three switches 3920 and their corresponding third elements 3930 are connected in parallel with the first element 221 .

Please refer to FIG. 39C , which is a schematic block diagram of a variant of a touch control 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 to the second element 222 in parallel. The fourth element 3950 may be a resistor and/or a capacitor having a fourth impedance Z4. When the fourth switch 3940 is set as 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 open circuit by the user of the stylus 3910 , the signal driven by the signal circuit 3912 will propagate to the tip section 230 through 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 sent by the signal circuits 3911 and 3912 through the pen tip section 230 , the touch processing device 130 can know the state of the fourth switch 3940 according to the ratio of the signal strengths sent by the signal circuits 3911 and 3912 . Assuming that the ratio falls within a third interval, the touch processing device 130 determines that the fourth switch 3940 is in an open state. Assuming that the ratio falls within 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 such that the third interval does not overlap the fourth interval. Furthermore, the touch processing device 130 can calculate the pressure on the first element 221 according to the proportional value falling within the third interval or the fourth interval.

Please refer back to FIG. 4B. Active stylus 110 includes two switches SWE and SWB, eraser capacitor 441 corresponding to switch SWE, and pen capacitor 442 corresponding to 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 will appreciate that the wired stylus 3910 may have more than one set of fourth switches 3940. The four switches and their corresponding fourth elements are connected in parallel with 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 are encoded 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 may transmit signals to the stylus 3910 through the signal circuits 3911 and 3912 in a time-division manner, which are encoded according to the same virtual random number respectively. Accordingly, the touch processing device 130 can respectively receive the signals driven by the signal circuits 3911 and 3912 from the touch panel 120 in two different time periods. 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 , which are coupled to the connection network 3410 . The stylus interface 4010 may 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 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 driver circuit 3420 for front-end analog processing. The connection network 3410 can receive the setting of the embedded processor 4040 to selectively connect the driving circuit 3420 to at least one of the signal circuits 3911 and 3912 . Thus, 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 setting of the embedded processor 4040 so as to connect the sensing circuit 3430 and the electrodes of the touch panel 120 . When the tip segment 230 of the corresponding stylus 3910 is placed on or near the touch panel, the electrical signals communicated through the tip segment 230 will be received by the sensing circuit 3430 via the electrodes of the touch panel 120 . The embedded processor 40404 receives signals from the sensing circuit 3430 after performing the front-end analog processing and analog-to-digital conversion. Those of ordinary skill in the art can calculate the strengths of the received signals corresponding to the signal circuits 3911 and 3912, respectively. From this, the ratio of the signal strength can be calculated. As explained above, 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 applicable to a wired stylus according to an embodiment of the present invention. This process is particularly applicable to the wired stylus 3910 shown in FIG. 39A. Unless there is a causal relationship, the present invention does not limit the execution order of any two steps in FIG. 41A.

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

Step 4120: Receive a second preamble encoded by a second virtual random code by a second element having 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 may be performed simultaneously or time-sharing.

Step 4130: Transmit the first preamble from the first element to the tip segment.

Step 4140: Send the second preamble to the nib segment from the second component. When the steps 4110 and 4120 are performed simultaneously, the steps 4130 and 4140 are also performed simultaneously. In other words, all four steps 4110 to 4140 are performed simultaneously.

If the touch processing device 130 is connected to multiple stylus 3910 . Each stylus 3910 can be assigned a set of two virtual random numbers. For example, one set of combinations comprising first and second virtual random numbers can be assigned to a first wired stylus 3910, while another set of combinations comprising 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 the 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 applicable to a wired stylus according to an embodiment of the present invention. This process is particularly applicable to the wired stylus 3910 shown in FIG. 39B. Unless there is a causal relationship, 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: Selectively receive the first preamble by a third element, the first Three elements are connected in parallel with the first element. The selectively receiving step is performed by the third switch 3920 of Figure 39B.

Step 4124: Selectively transmit the first preamble to the pen tip segment from the third element. This selectively receiving step is also performed by the third switch 3920 of Figure 39B. Steps 4110, 4120, 4122 and 4124 may be performed concurrently.

Please refer to FIG. 41C , which is a schematic flowchart of an operation method applicable to 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 a causal relationship is specified, 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: Selectively receive the second preamble by a fourth element in parallel with the second element. The selectively receiving step is performed by the fourth switch 3940 of Figure 39C.

Step 4128: Selectively transmit the second preamble to the pen tip segment from the fourth element. This selectively receiving step is also performed by the fourth switch 3940 of Figure 39C. Steps 4110, 4120, 4126 and 4128 may be performed concurrently.

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 shown in FIGS. 41A to 41C . For example, the flowchart may be implemented by instructions executed by an embedded processor of the touch processing device 130 . Unless a causal relationship is specified, the present invention does not limit the execution order of any two steps in FIG. 42 . Steps 3630, 3640, 3660 and 3680 included in the flow have been described in the embodiment shown in Figures 36A and 36B when explained in.

Step 4210: Send a first preamble encoded 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: Send a second preamble encoded 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 may be performed simultaneously.

Optional step 4290: Calculate a switch state of the stylus according to 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 shown in FIGS. 41A to 41C . For example, the flowchart may be implemented by instructions executed by an embedded processor of the touch processing device 130 . Unless a causal relationship is specified, the present invention does not limit the execution order of any two steps in FIG. 43 . Step 3880 included in the flow has been explained in the embodiment shown in Figures 38A and 38B. In addition, optional step 4290 has also been explained in the embodiment shown in FIG. 42 .

Step 4310: Send a first preamble encoded according to a first virtual random number to a first circuit of a stylus within a first period of time.

Step 4320: Receive electrical signals through electrodes of a touch panel during the first period.

Step 4330: Despread the first preamble included in the electrical signal received in the first period according to the first virtual random code.

Step 4340: Send a second preamble encoded according to a second virtual random number to a second circuit of the stylus within the second period.

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

Step 4360: Despread the second preamble included in the electrical signal received in the first period according to the second virtual random code.

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 shown in FIGS. 41A to 41C . For example, the flowchart may be implemented by instructions executed by an embedded processor of the touch processing device 130 . Unless a causal relationship is specified, the present invention does not limit the execution order 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 flow has been explained in the embodiment shown in Figures 38A and 38B. In addition, optional step 4290 has also been explained in the embodiment shown in FIG. 42 .

Step 4410: Send a first preamble encoded according to a virtual random number to a first circuit of a stylus within a first period.

Step 4430: Despread the first preamble included in the electrical signal received in the first period according to the virtual random code.

Step 4440: Send a second preamble encoded according to the virtual random number to a second circuit of the stylus within a second period.

Step 4460: Despread the second preamble included in the electrical signal received in the second period according to the virtual random code.

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 responsive to a pressure, wherein the first element is used to receive a first virtual disturbance a digitally encoded first signal; a second element having a fixed impedance, wherein the second element is used to receive a second signal encoded with a second virtual random number; and a conductive tip segment for: simultaneously receiving the first signal from the first element and 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 Two virtual random numbers.

In one embodiment, in order to provide the first virtual random number and the second virtual random number on the stylus, the touch pen further includes a controller for: generating the first virtual random number according to the first virtual random number generating the second signal according to the second virtual random code; 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 comprises: at least one sensor on the pen connected to the controller. The controller is further used for: generating a data code according to the state of the at least one-on-one sensor; generating a first data code according to the data code and the first virtual random code; 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 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 comprises: at least one sensor on the pen connected to the controller. The controller is further used for: generating a data code according to the state of the at least one-on-one sensor; according to the data code and the second virtual random code generating a second data code; and transmitting the second data code to the second element. The second element is further used for: receiving the second data code from the controller. The conductive 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 a receiving program of a touch processing device of a touch panel, the controller is further configured to: receive a synchronization signal from an electronic device; and after receiving the synchronization signal, execute The generating step and the transmitting step.

In one embodiment, in order to synchronize with the receiving process of the touch processing device of the touch panel approached by the stylus, the controller is coupled to the conductive pen tip section to receive the synchronization signal, and the synchronization signal is composed of It is emitted from 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 human-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 an audio effect indicator.

In one embodiment, for 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 The touch pen 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 tip section, wherein the third switch can be selectively Open or closed, when the third switch is closed, the first signal propagates from the conductive tip section through the third switch and the third element.

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 The fourth switch and the conductive tip section, wherein the third switch can be selectively opened or closed, when the fourth switch is closed, the second signal propagates from the conductive through the fourth switch and the fourth element Nib segment.

One of the objectives of the present invention is to provide a method for sending an electrical signal carrying pressure information from a stylus pen, comprising: receiving, by a first element having an impedance responsive to a pressure, an electrical signal encoded with a first virtual random number a first signal; a second signal encoded with a second virtual random number is received by a second element with a fixed impedance; the first signal is simultaneously received from the first element and from the second element by a conductive tip section receiving the second signal; and transmitting an electrical signal including the first signal and the second signal by the conductive 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 comprises: generating the first signal according to the first virtual random number; according to the second virtual random number The virtual 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 further includes: generating a data code according to the state of the sensor on the at least one pen; generating a data code according to the data code and the first A virtual random number generates a first data code; transmits the first data code to the first element; transmits the first data code from the first element to the conductive tip segment; and transmits the first data from the conductive tip segment code.

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 sensor on the pen; generating a first random number according to the data code and the second virtual random code. two data codes; transmitting the second data code to the second element; transmitting the second data code from the second element to the conductive pen tip segment; and transmitting the second data code from the conductive pen tip segment.

In one embodiment, in order to synchronize with a 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 generating 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 to which the stylus pen approaches, the synchronization signal is sent by electrodes of a touch panel of the electronic device.

In one embodiment, in order to avoid the conflict of virtual random numbers when operating a plurality of stylus pens on a touch panel, the method further includes: receiving a setting command from the human-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 the virtual random number information to the user, the method further includes one of the following steps: making a visual effect indicator of the stylus indicate the first virtual random number and the second virtual random number a combination of numbers; and a sound effect indicator of the stylus to indicate the combination of the first virtual random number and the second virtual random number.

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

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 by the third element The first signal is transmitted to the conductive tip segment.

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 by the fourth element The second signal is transmitted to the conductive tip segment.

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, comprising: a sensing circuit for sensing a touch panel from a touch panel. some electrodes receive the electrical signal; and a processor, coupled to the sensing circuit, for: despreading a first preamble of the received signal according to a first virtual random code; Despreading a second preamble of the received signal with 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, wherein the first part includes The first preamble, the second part includes 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 transmit electrical signals synchronously, the touch processing device further includes a driving circuit coupled to the electrodes of the touch panel, wherein the processor is further configured to: Before the receiving step is performed, the driving circuit is made to transmit a lighthouse 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 according to the first virtual random code, 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 code, 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 code; Decoding the second data code of the received signal with two virtual random codes; and determining a data code when the first data code is the same as the second data code, wherein the data code represents at least one Status of the sensor.

In one embodiment, in order to receive smoother and more average 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 an 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 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 respectively, wherein the second electrodes are parallel to each other.

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

In one embodiment, in order to simultaneously receive electrical signals from multiple stylus pens, the processor is further configured to: despread a third preamble of the received signal according to a third virtual random code; despreading a fourth preamble of the received signal with a fourth virtual random code; and calculating a second touch according to a ratio of a second signal strength of a third part and a fourth part of the received signal A pressure information of the pen, wherein the third part includes the third preamble, the fourth part includes the fourth preamble, wherein the first virtual random number, the second virtual random number, the third virtual random number 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 The 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 code; generating the first preamble according to the second virtual random code two preambles; and respectively transmitting the first preamble and the second preamble to the first signal circuit and the second signal circuit through the touch pen interface.

In one embodiment, in order to receive an on/off state of the stylus, the processor is further configured to: calculate the first signal strength ratio according to 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 wired styluses simultaneously, the stylus The interface is further coupled to a third signal circuit and a fourth signal circuit of a second touch pen. The processor connected to the stylus interface is further configured to: generate a third preamble according to a third virtual random number; generate a fourth preamble according to a fourth virtual random number; and through the touch The pen interface transmits the third preamble and the fourth preamble to the third signal circuit and the fourth signal circuit respectively, 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 first preamble of the received signal is despread by a virtual random code; 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 The pressure information is calculated by a first signal strength ratio of a first part and a second part, wherein the first part includes the first preamble, the second part includes the second preamble, wherein the first virtual random The number is orthogonal to the second virtual random number.

In one embodiment, in order to trigger the stylus to transmit electrical signals synchronously, the method further includes: before the receiving step is performed, causing the driving circuit to transmit a lighthouse 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 code, 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 a second data code of the received signal according to the second virtual random code, wherein the second data 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 method further includes: decoding the first data code of the received signal according to the first virtual random code; Decoding the second data code of the received signal with random code; and when the first data code is the same as the second data code, determining a data code, wherein the data code represents at least one sensor on the first stylus state of the device.

In one embodiment, in order to receive smoother and more average 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 step of despreading 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 receive the state of the sensor on the stylus correctly and quickly, 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 code and the second synchronization message, the received signal received by at least one first electrode of the touch panel is decoded; The received signal decodes the second data code; and when the first data code is the same as the second data code, determines a data code, wherein the data code represents the data of at least one sensor on the first stylus. A state in which a plurality of the first electrodes are parallel to each other, and the plurality of first electrodes meet the plurality of second electrodes.

In one embodiment, in order to receive electrical signals from multiple styluses simultaneously, the method Further comprising: despreading a third preamble of the received signal according to a third virtual random code; despreading a fourth preamble of the received signal according to a fourth virtual random code; and A pressure information of a second stylus is calculated according to a second signal strength ratio of a third part and a fourth part of the received signal, wherein the third part includes the third preamble, the fourth The part includes the second preamble, wherein the first virtual random number, the second virtual random number, 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; generating the first preamble according to the second virtual generating the second preamble by random code; and respectively transmitting the first preamble and the second preamble to the first signal circuit and the second signal circuit.

In one embodiment, in order to receive a switch state of the stylus, the method further includes: calculating 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 pen.

In one embodiment, in order to connect multiple line styluses at the same time, the method further includes: generating a third preamble according to a third virtual random number for despreading; generating a first random number according to a fourth virtual random number. Four preambles for despreading; 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 virtual 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 including a touch panel; a first stylus; and one of the electrical signals for receiving pressure information sent by the first stylus 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: despreading a first preamble of the received signal according to a first virtual random code ; despread a second preamble of the received signal according to a second virtual random code; and calculate 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, the second part includes the second preamble, and the first virtual random number is orthogonal to the second virtual random number.

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

In one embodiment, in order to provide the first virtual random number on the stylus with For the second virtual random number, the stylus further includes a controller for: generating the first signal according to the virtual random number; generating the second signal according to the virtual random number; transmitting the first signal to the first signal an 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 comprises: at least one sensor on the pen connected to the controller. The controller is further used for: generating a data code according to the state of the at least one-on-one sensor; generating a first data code according to the data code and the virtual random code; 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 during the first period. The conductive 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 comprises: at least one sensor on the pen connected to the controller. The controller is further configured to: generate a data code according to the state of the at least one-on-one sensor; generate a second data code according to the data code and the second virtual random code; and transmit the second data code to the second element . The second element is further used for: receiving the second data code from the controller during the second period. The conductive 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 a receiving program of a touch processing device of a touch panel, the controller is further configured to: receive a synchronization signal from an electronic device; and after receiving the synchronization signal, execute The generating step and the transmitting step.

In one embodiment, in order to synchronize with the receiving process of the touch processing device of the touch panel approached by the stylus, the controller is coupled to the conductive pen tip section to receive the synchronization signal, and the synchronization signal is composed of It is emitted from electrodes of a touch panel of the electronic device.

In one embodiment, in order to avoid operating multiple styluses on a touch panel To avoid the conflict of virtual random numbers, the touch pen further includes a human-machine interface for the user to input the virtual random numbers, wherein the controller is further used for receiving a setting command from the human-machine interface, which specifies the virtual random numbers.

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 an audio effect indicator .

In one embodiment, for 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 having a fixed impedance, coupled to the third switch and the The conductive tip segment, wherein the third switch can be selectively opened or closed, when the third switch is closed, the first signal propagates from the conductive tip segment 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 having a fixed impedance, coupled to the fourth switch and the The conductive tip segment, wherein the third switch can be selectively opened or closed, when the fourth switch is closed, the second signal propagates from the conductive tip segment via the fourth switch and the fourth element.

One of the objectives of the present invention is to provide a carrying pressure from a stylus pen A method for electrical signals of information, comprising: receiving a first signal encoded with a virtual random code by a first element having an impedance reflecting a pressure in a first period; receiving a first signal with a fixed impedance in a second period The second element receives the second signal encoded with the virtual random number; the first signal is received from the first element by a conductive tip segment during the first period; the conductive tip segment receives the first signal during the second period from the first element The second element receives the second signal; the electrical signal including the first signal is transmitted by the conductive tip segment during the first period; and the electrical signal including the second signal is transmitted by the conductive tip segment during 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; transmitting the first signal 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 method further includes: generating a data code according to the state of the sensor on the at least one pen; generating first data according to 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 tip section; and transmitting the first data code from the conductive tip 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 sensor on the at least one pen; generating second data according to 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 tip section; and transmitting the second data code from the conductive tip section.

In one embodiment, in order to interface with a touch processing device of a touch panel To receive program synchronization, the method further includes: receiving a synchronization signal from an electronic device; and after receiving the synchronization signal, performing the generating step and the transmitting step.

In one embodiment, in order to synchronize with the receiving process of the touch processing device of the touch panel to which the stylus pen approaches, the synchronization signal is sent by electrodes of a touch panel of the electronic device.

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

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

In one embodiment, for 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; receiving the first signal from the first signal The circuit propagates the first signal to the first element; receives the second signal from the touch processing device by a second signal circuit; and propagates the second signal to the second element by the second signal circuit.

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 by the third element The first signal is transmitted to the conductive tip segment.

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 by the fourth element The second signal is transmitted to the conductive tip segment.

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, comprising: a sensing circuit for sensing a touch panel from a touch panel. some electrodes receive the electrical signal; and a processor coupled to the sensing circuit for: despreading a first preamble of the received signal in a first time period according to a virtual random code; The virtual random code despreads a second preamble of the received signal in a second period; and calculates the received signal according to a first signal strength ratio of a first part and a second part of the received signal 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 transmit electrical signals synchronously, the touch processing device further includes a driving circuit coupled to the electrodes of the touch panel, wherein the processor is further configured to: Before the receiving step is performed, the driving circuit is made to transmit a lighthouse 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 period according to the virtual random code, 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 period according to the virtual random code, wherein The data 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 during the first period according to the virtual random code ; decode the second data code of the received signal during the second period according to the virtual random code; and determine data when the first data code is the same as the second data code code, wherein the data code represents the state of at least one sensor on the first touch pen.

In one embodiment, in order to receive smoother and more average 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 an 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 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 respectively, wherein the second electrodes are parallel to each other.

In one embodiment, in order to use the synchronization message to receive the state of the sensor on the stylus correctly and quickly, the processor is further configured to: according to the virtual random number and the first synchronization message, the touch The first data code is decoded by the received signal received by at least one first electrode of the panel; the received 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 the second data code with a signal; and determining a data code when the first data code is the same as the second data code, wherein the data code represents the state of at least one sensor on the first stylus, The plurality of 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 simultaneously receive electrical signals from a plurality of stylus pens, the processor is further configured to: decode a third preamble of the received signals in a third period of time 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 code; and according to a third part of the received signal and a second part of a fourth part The signal strength ratio is used to calculate a pressure information of a second stylus, wherein the third part The third part includes the third preamble, the fourth part includes the fourth preamble, wherein the first virtual random number and the second virtual random number are orthogonal to each other, wherein the third period part and the first Portions of the periods or portions of the second period overlap.

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 A 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 during the first period through the stylus interface; and transmit the second preamble to the second signal through the stylus interface during the second period circuit.

In one embodiment, in order to receive an on/off state of the stylus, the processor is further configured to: calculate the first signal strength ratio according to 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 simultaneously receive electrical signals from multiple stylus pens, 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 configured to: generate a third preamble according to a second virtual random number in a third period; generate a fourth period according to the second virtual random number the fourth preamble; the third preamble is sent to the third signal circuit through the touch pen interface in the third period; the fourth preamble is sent to the fourth time period through the touch pen interface The fourth signal circuit, wherein the first virtual random number and the second virtual random number are orthogonal to each other, wherein a portion of the third period overlaps with the first period or a portion of the second period.

One of the objectives of the present invention is to provide a device for receiving a first touch pen The method for sending out an electrical signal carrying pressure information includes: receiving the electrical signal from some electrodes of a touch panel; performing a first preamble of the received signal in a first period of time according to a virtual random code despreading spectrum; despreading a second preamble of the received signal in a second time period according to the virtual random code; and a first signal according to a first part and a second part of the received signal The pressure information is calculated using an intensity ratio, 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 transmit electrical signals synchronously, the method further includes: before the receiving step is performed, causing the driving circuit to transmit a lighthouse 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 the first data code of the received signal in the first period according to the virtual random code, wherein the first data code is 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, the method further comprises: decoding the second data code of the received signal in the second period according to the virtual random code, wherein the first The two data codes represent 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 in the first period according to the virtual random code; The virtual random code decodes a second data code of the received signal during the second period; and when the first data code is the same as the second data code, determines a data code, 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 smoother and more average 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. 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 first 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 receive the state of the sensor on the stylus correctly and quickly, the method further includes: according to the virtual random number and the first synchronization message, the touch panel The first data code is decoded on the received signal received by at least one first electrode; and the received signal received by at least one first electrode on the touch panel is decoded according to the virtual random code and the second synchronization message. Decoding the second data code; and determining a data code when the first data code is the same as the second data code, wherein the data code represents the state of at least one sensor on the first stylus, wherein many The strips of the first electrodes are parallel to each other, and the strips of first electrodes meet the strips of second electrodes.

In one embodiment, in order to simultaneously receive electrical signals from multiple stylus pens, the method further includes: despreading a third preamble of the received signal in a third period of time according to a second virtual random code ; despread a fourth preamble of the received signal of a fourth period according to the second virtual random code; and according to a second signal strength of a third part and a fourth part of the received signal A pressure information of a second stylus is calculated proportionally, wherein the third part includes the third preamble, the fourth part includes the fourth preamble, wherein the first virtual random number and the second The virtual random numbers are orthogonal to each other, wherein a portion of the third period overlaps with a portion of the first period or a portion of the second period.

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 second preamble; transmitting the first preamble to the first signal circuit of the first stylus during the first period; and transmitting the second preamble to the first touch during the second period The second signal circuit of the control pen.

In one embodiment, in order to receive a switch state of the stylus, the method further includes: calculating 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 pen.

In one embodiment, in order to simultaneously receive electrical signals from multiple stylus pens, the method 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; transmitting the third preamble to a third signal circuit of a second stylus in the third period; transmitting 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, wherein the part of the third period is the same as that of the first period or the second period Partially overlapping.

One of the objectives of the present invention is to provide a touch system including: a touch panel; a first touch pen; and a touch processing device. The touch processing device is used for receiving an 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; a second period according to the virtual random code performing despreading on a second preamble of the received signal; and according to a first part and a second part of the received signal The pressure information is calculated using a first signal strength ratio, wherein the first part includes the first preamble, and the second part includes the second preamble.

In one embodiment, the first stylus includes: a first element having an impedance responsive to a pressure, wherein the first element is used to receive a first signal encoded with the virtual random code during the first period of time ; a second element having a fixed impedance, wherein the second element is used to receive a second signal encoded with the virtual random code during the second period; and a conductive tip segment for: during the first period The first signal is received from the first element; the second signal is received from the second element during the second period; the electrical signal including the first signal is transmitted during the first period; and the electrical signal including the first signal is transmitted during 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-described 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. Those of ordinary skill in the art may modify the above-described embodiments without departing from the scope of the invention as defined by the following claims.

3520~3760: Steps

Claims (16)

A touch pen for sending out electrical signals carrying pressure information, comprising: a controller for: receiving a synchronizing signal from an electronic device; after receiving the synchronizing signal, for: generating a first generating a second signal according to the virtual random code; transmitting the first signal to a first element; and transmitting the second signal to a second element; the first element having an impedance reflecting a pressure, wherein the first element an element for receiving the first signal for a first period; the second element having a fixed impedance, wherein the second element for receiving the second signal for a second period; and a conductive tip segment for in: receiving the first signal from the first element during the first period; receiving the second signal from the second element during the second period; transmitting the electrical signal including the first signal during the first period; and The electrical signal including the second signal is transmitted during a second period. The stylus pen as described in item 1 of the patent application scope, further comprising: at least an on-stroke sensor connected to the controller, The controller is further configured to: generate a data code according to the state of the at least one-on-one sensor; generate a first data code according to the data code and the virtual random code; and transmit the first data code to the first element, The first element is further used for: receiving the first data code from the controller during the first period, wherein the conductive tip segment is further used for: receiving the first data code from the first element; and transmitting the first data code a data code. The touch pen as claimed in claim 1, further comprising: at least one-on-one sensor connected to the controller, wherein the controller is further configured to: generate data according to the state of the at least one-on-one sensor generating a second data code according to the data code and the virtual random code; and transmitting the second data code to the second element, wherein the second element is further used for: receiving the controller during the second period The second data code, wherein the conductive tip section is further used for: receiving the second data code from the second element; and transmitting the second data code. The touch pen of claim 1, wherein the controller is coupled to the conductive pen tip section to receive the synchronization signal, and the synchronization signal is sent by electrodes of a touch panel of the electronic device. The stylus as described in item 1 of the scope of the application, further comprising: a one-man-machine interface for the user to input the virtual random number, The controller is further used for receiving a setting command from the man-machine interface, which specifies the virtual random number. The touch pen as described in claim 1, further comprising one of the following devices connected to the controller to indicate the virtual random number: a visual effect indicator; and a sound effect indicator. The stylus pen according to claim 1, further comprising: a third switch for receiving the first signal; and a third element having a fixed impedance, coupled to the third switch and the conductive tip segment, wherein the third switch can be selectively opened or closed, when the third switch is closed, the first signal propagates from the conductive tip segment via the third switch and the third element. The stylus as described in claim 1, further comprising: a fourth switch for receiving the second signal; and a fourth element having a fixed impedance, coupled to the fourth switch and the conductive tip segment, wherein the fourth switch can be selectively opened or closed, when the fourth switch is closed, the second signal propagates from the conductive tip segment via the fourth switch and the fourth element. A method of sending an electrical signal carrying pressure information from a stylus, comprising: receiving a synchronization signal from an electronic device; and After receiving the synchronization signal, the following steps are performed: generating a first signal according to a virtual random code; generating a second signal according to the virtual random code; receiving the first element with an impedance reflecting a pressure in a first period of time the first signal; the second signal is received by a second element having a fixed impedance during a second period; the first signal is received from the first element by a conductive tip segment during the first period; the conductive tip segment is received The second signal is received from the second element during the second period; an electrical signal including the first signal is transmitted by the conductive tip segment during the first period; and an electrical signal including the first signal is transmitted by the conductive tip segment during the second period The electrical signal of the second signal. The method described in item 9 of the scope of the application, further comprising: generating a data code according to the state of the at least one sensor; generating a first data code according to the data code and the virtual random code; sending the first data code to the first element; the first data code is transmitted from the first element to the conductive nib segment; and the first data code is transmitted from the conductive nib segment. The method described in item 9 of the scope of the application, further comprising: generating a data code according to the state of at least one of the sensors; generating a second data code according to the data code and the virtual random code; sending the second data code to the second element; The second data code is transmitted from the second element to the conductive pen tip segment; and the second data code is transmitted from the conductive pen tip segment. The method of claim 9, wherein the synchronization signal is sent by electrodes of a touch panel of the electronic device. The method described in item 9 of the scope of the patent application further comprises: receiving a setting command from the human-machine interface, which specifies the virtual random number. The method described in item 9 of the claimed scope further comprises one of the following steps: causing a visual effect indicator of the stylus to indicate the virtual random number; and causing a sound indicator of the stylus to indicate the Virtual random numbers. The method of claim 9, further comprising: selectively receiving the first signal from a third element having a fixed impedance through a third switch of the stylus; and selectively receiving the first signal from the first signal The three elements transmit the first signal to the conductive tip segment. The method of claim 9, further comprising: selectively receiving the second signal from a fourth element having a fixed impedance through a fourth switch of the stylus; and selectively receiving the second signal from the first Four elements transmit the second signal to the conductive tip segment.

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