WO2019203425A1 - Device and method for processing signal of electronic pen having changed resonant frequency - Google Patents

Abstract

An electronic device is disclosed. Other various embodiments understood through the specification are also possible. The electronic device comprises: a housing; a display panel which is positioned inside the housing, is viewed through the housing and can detect the input of a stylus pen; a control circuit for controlling the display panel; a communication module positioned inside the housing; a processor positioned inside the housing and operatively connected to the display panel and the communication module; and memory positioned inside the housing and operatively connected to the processor. When the memory is executed, the processor receives, from the stylus pen by means of the communication module, a first signal comprising information relating to one or more frequencies associated with a resonant circuit inside the stylus pen, and instructions for adjusting one or more parts of the control circuit are stored by means of at least a part of the information.

Description

Apparatus and method for processing signals of electronic pens with resonant frequencies changed

Embodiments disclosed in this document relate to an apparatus and a method for processing a signal of an electronic pen whose resonance frequency is changed.

The electronic device may receive a user input by sensing an input of the electronic pen. The electronic device may detect an input of the electronic pen using various methods. For example, the electronic device may determine an input position or an input type (eg, a hovering input, a drawing input, or a button input) of the electronic pen by receiving a signal including a specified resonance frequency from the electronic pen.

The resonant frequency of the signal received from the electronic pen may be changed for various reasons. For example, the resonance frequency of the electronic pen may be changed due to the impact or heat applied to the coil or capacitor included in the resonant circuit in the process step. For another example, when the body portion of the electronic pen is changed to a metal material, the resonance frequency may be changed by the influence of the metal material. In another example, the electronic pen may be replaced with another electronic pen having a different resonant frequency. In another example, the resonance frequency of the electronic pen may be changed due to the influence of water. When the resonant frequency is changed, a component (eg, a filter) of the electronic device cannot process a signal of a frequency band including the changed resonant frequency, and thus the electronic device cannot normally detect an input position or an input form of the electronic pen.

In various embodiments of the present disclosure, the electronic device may detect a changed resonance frequency and process a signal of the electronic pen according to the changed resonance frequency.

According to an embodiment of the present disclosure, an electronic device includes a housing, a display panel located in the housing, viewable through the housing, configured to sense a stylus pen input, a control circuit for controlling the display panel, A communication module located within the housing, a processor located within the housing and operatively connected to the display panel and the communication module, a memory located within the housing and operatively coupled to the processor, the memory executing And upon receiving, the processor, via the communication module, a first signal from the stylus pen, the first signal comprising information about at least one frequency associated with a resonant circuit in the stylus pen, using the information at least in part, Tightening at least part of the control circuit That the instructions to be stored can be characterized.

According to an embodiment of the present disclosure, a method of an electronic device may include detecting a change in a resonant frequency of a signal received from an electronic pen from a first resonant frequency to a second resonant frequency; The method may include receiving a signal including a frequency, and determining an input position of the electronic pen based at least in part on the received signal.

According to an embodiment of the present disclosure, an electronic device may include an elongated housing, a dielectric part disposed at one end of the housing, a resonant circuit disposed in the housing and including at least one electronic element, and located in the housing. And a memory located in the housing and operatively connected to the communication module, the memory storing information on at least one frequency associated with the electronic element, wherein the communication module is wireless with an external electronic device. And transmit the information about the frequency by using the wireless connection.

According to embodiments disclosed in the present disclosure, the electronic device may detect that the resonance frequency of the electronic pen is changed.

According to embodiments disclosed herein, the electronic device may determine an input position or input form of the electronic pen by processing a signal of the electronic pen whose resonance frequency is changed.

In addition, various effects may be provided that are directly or indirectly identified through this document.

1 illustrates operations of an electronic device and an electronic pen according to various embodiments of the present disclosure.

2 is a flowchart illustrating an operation of an electronic device that determines an input position of an electronic pen based at least on a signal of an electronic pen whose resonance frequency is changed according to various embodiments.

3 illustrates an operation of a control circuit according to various embodiments of the present disclosure.

4 is a flowchart illustrating an operation of an electronic device that processes a signal of an electronic pen whose resonance frequency is changed according to various embodiments of the present disclosure.

5 illustrates an operation of detecting a changed resonant frequency using a communication module according to various embodiments of the present disclosure.

6 illustrates a signal flow diagram for transmitting information related to a second resonant frequency according to various embodiments.

7 illustrates an operation of determining an input form of an electronic pen using a phase detector according to various embodiments of the present disclosure.

8 is a flowchart illustrating an operation of an electronic device that determines an input form of an electronic pen based at least on a phase difference according to various embodiments of the present disclosure.

9 is a flowchart illustrating an operation of an electronic device that detects that a resonance frequency of an electronic pen is changed from a second resonance frequency to a third resonance frequency according to various embodiments of the present disclosure.

10 is a flowchart illustrating an operation of an electronic device that detects that a resonance frequency of an electronic pen is changed from a first resonance frequency to a second resonance frequency according to various embodiments of the present disclosure.

11 is a block diagram of an electronic device in a network environment according to various embodiments of the present disclosure.

In connection with the description of the drawings, the same or similar reference numerals may be used for the same or similar components.

Hereinafter, various embodiments of the present invention will be described with reference to the accompanying drawings. However, it is not intended to limit the present invention to specific embodiments, but it should be understood to include various modifications, equivalents, and / or alternatives of the embodiments of the present invention.

1 illustrates operations of the electronic device 101 and the electronic pen 160 according to various embodiments of the present disclosure.

Referring to FIG. 1, in the network environment 100, the electronic pen 160 may mean, for example, a stylus pen. The electronic pen 160 may include a housing 162, a dielectric portion 164 (eg, a pen tip) disposed at one end of the housing 162, and a button 166. According to an embodiment of the present disclosure, the electronic pen 160 may support one or more input types. The input form may include, for example, a hovering input, a drawing input in contact with the electronic device 101 through the dielectric portion 164, a button input for inputting the button 166, or an erasing input.

According to an embodiment, the electronic pen 160 may include a signal including a resonant frequency using the resonant circuit 172 included on a printed circuit board (PCB) 170 inside the housing 162. 151 may be generated. The resonant circuit 172 may include at least one electronic device such as at least one coil, an inductor, or a capacitor. According to an embodiment, the electronic pen 160 may generate the signal 151 using an electro-magnetic resonance (EMR) method, an active electrical stylus (AES) method, or an electric coupled resonance (ECR) method. When the electronic pen 160 transmits the signal 151 by the EMR method, the electronic pen 160 is based on an electromagnetic field 152 generated from the electronic device 101, and thus the resonant circuit 172 may be used. The signal 151 including the resonant frequency may be generated through the signal. When the electronic pen 160 transmits the signal 151 by the AES method, the electronic pen 160 may generate a signal 151 including the resonance frequency without the electromagnetic field 152 generated from the electronic device 101. Can be.

According to an embodiment, after the resonant frequency of the electronic pen 160 is set to the first resonant frequency, the resonant frequency of the electronic pen 160 may be changed from the first resonant frequency to the second resonant frequency for various reasons. have. For example, the resonance frequency of the electronic pen 160 may be changed due to the impact or heat applied to the coil or capacitor included in the resonance circuit 172. For another example, when the housing 162 of the electronic pen 160 is changed to a metal material, the resonance frequency may be changed by the influence of the metal material. In another example, the electronic pen 160 may be replaced with another electronic pen having a different resonant frequency. For another example, the resonance frequency of the electronic pen 160 may be changed due to the influence of water. The electronic device 101 may detect that the resonant frequency of the electronic pen 160 is changed, and detect the input of the electronic pen 160 by processing the changed resonant frequency.

According to an embodiment of the present disclosure, the electronic device 101 may include a portable device such as a smartphone or a tablet, a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance. The electronic device 101 may include a housing 105, a display panel 110, a control circuit 120, and a processor 126 located in the housing 105. The electronic device 101 may omit at least some of the components shown in FIG. 1 or may further include at least one component. For example, the electronic device 101 may further include at least one of the components shown in FIG. 11. For another example, the electronic device 101 may further include a hole for accommodating the electronic pen 160 inside the electronic device 101.

According to an embodiment of the present disclosure, the display panel 110 may provide visual information to the outside of the electronic device 101. The display panel 110 may be, for example, a liquid crystal display (LCD), an organic electroluminescence (EL), a thin film transistor-liquid crystal display (TFT LCD), or an organic light emitting diode (organic). light-emitting diodes (OLEDs), and plasma display panels (PDPs). According to an embodiment of the present disclosure, the electronic device 101 may determine an input position or input type of the electronic pen 160 based at least on the signal 151 detected on the display panel 110. For example, the electronic device 101 may determine the input position of the electronic pen 160 based on at least one of the resonant frequency of the signal 151 and the strength of the signal 151. As another example, the electronic device 101 may determine an input form of the electronic pen 160 based on a phase difference between the resonance frequency of the signal 151 detected on the display panel 110 and a predetermined reference frequency.

According to an embodiment, the control circuit 120 may be disposed at the bottom of the display panel 110. According to an embodiment of the present disclosure, the control circuit 120 is implemented as at least one chip or module to perform the overall operation of the electronic device 101 for processing the signal of the electronic pen 160 whose resonance frequency is changed. Can be. The specific configuration of the control circuit 120 is described in FIGS. 3 and 5.

According to an embodiment, the processor 126 may include at least one of a micro controller unit (MCU), a phase locked loop (PLL), an application processor (AP), a communication processor (CP), or a digital signal processor (DSP). Can be. The processor 126 may be operatively connected to the display panel 110 and the control circuit 120.

According to an embodiment of the present disclosure, the processor 126 may detect that the resonance frequency of the electronic pen 160 is changed from the first resonance frequency to the second resonance frequency. For example, the processor 126 may receive information related to the second resonant frequency from the electronic pen 160. In another example, when the signal of the second resonance frequency is detected for a predetermined time, the processor 126 may determine that the resonance frequency of the electronic pen 160 is changed to the second resonance frequency. According to an embodiment of the present disclosure, the processor 126 may receive information related to the second resonance frequency by wire through a port positioned at one end of the housing 105. According to another embodiment, the processor 126 may receive information related to the second resonant frequency through wireless communication. The wireless communication may include, for example, a Bluetooth low energy (BLE) protocol or an EMR scheme defined by a Bluetooth special interest group (SIG).

According to an embodiment of the present disclosure, the processor 126 may determine an input position or an input form of the electronic pen 160 by processing a signal of the electronic pen 160 whose resonance frequency is changed through the control circuit 120. For example, the processor 126 may radiate the electromagnetic field 152 through the control circuit 120. In another example, the processor 126 may receive a signal including the second resonant frequency from the electronic pen 160 through the display panel 110. In another example, the processor 126 may determine an input position or input form of the electronic pen 160 based at least in part on the received signal.

Through the above-described method, the electronic device 101 may determine the input position or the input form of the electronic pen 160 even if the resonant frequency of the electronic pen 160 is changed.

2 is a flowchart illustrating an operation of an electronic device 101 that processes a signal of an electronic pen 160 whose resonance frequency is changed according to various embodiments. 2 may be performed by the electronic device 101 or some component of the electronic device 101 (for example, the processor 126 or the control circuit 120).

Referring to FIG. 2, in operation 205 of the method 200, the electronic device 101 may detect that the resonance frequency of the electronic pen 160 is changed from the first resonance frequency to the second resonance frequency. For example, the electronic device 101 may receive information related to the second resonant frequency from the electronic pen 160. In this case, according to an embodiment of the present disclosure, the electronic device 101 may receive information related to the second resonant frequency after pairing with the electronic pen 160. For another example, when a signal including the second resonant frequency is detected for a specified time, the electronic device 101 may determine that the resonant frequency of the electronic pen 160 is changed to the second resonant frequency.

In operation 210, the electronic device 101 may receive a signal including a second resonance frequency from the electronic pen 160. For example, the electronic device 101 may receive a signal generated from the electronic pen 160 according to the AES method, or may receive a signal derived from the electronic pen 160 according to the EMR method.

In operation 215, the electronic device 101 may determine an input position of the electronic pen 160 based at least in part on the received signal. According to an embodiment of the present disclosure, the electronic device 101 may determine not only an input position of the electronic pen 160 but also an input form of the electronic pen 160. The input form may include, for example, a hovering input, a drawing input, an erasing input, or a button input.

3 illustrates an operation of the control circuit 120 according to various embodiments.

Referring to FIG. 3, in the network environment 300 (eg, the network environment 100 of FIG. 1), the control circuit 120 includes a converter 122, a receiving circuit 124, and a transmitting circuit 128. can do. According to an embodiment, the control circuit 120 may omit at least one of the components shown in FIG. 3 or may further include at least one component. For example, when the electronic device 101 receives an input of the electronic pen 160 according to the AES method, the control circuit 120 may not include the transmission circuit 128. As another example, the control circuit 120 may further include a channel selector (or multiplexer, MUX) (not shown) configured to select a signal received from the electronic pen 160 according to the channel. have. According to an embodiment, the control circuit 120 may be implemented as a printed circuit board (PCB).

According to an embodiment of the present disclosure, when the electronic pen 160 transmits the signal 151 by the EMR method, the transmitting circuit 128 generates a current for the electromagnetic field 152 to generate electromagnetic induction of the resonant circuit 172. Can be generated. According to an embodiment, when the electronic pen 160 transmits the signal 151 by the AES method, the control circuit 120 may not include the transmission circuit 128.

According to an embodiment, the converter 122 may convert the resonant frequency of the signal 151 received from the electronic pen 160. For example, the converter 122 may down convert or up convert the resonant frequency of the signal 151 received through the sensor panel 112 from the second resonant frequency to the first resonant frequency. Can be. The converter 122 may transmit the signal whose resonance frequency is converted to the receiving circuit 124.

According to an embodiment, the receiving circuit 124 may include at least one of an amplifier, a filter, or an analog digital converter (ADC). According to an embodiment of the present disclosure, the receiving circuit 124 may filter the signal received from the converter 122 according to a designated frequency band, and transmit the filtered signal to the processor 126. The designated frequency band may comprise, for example, a first resonant frequency.

According to an embodiment of the present disclosure, the processor 126 may control the operations of the converter 122, the receiving circuit 124, and the transmitting circuit 128. For example, processor 126 may radiate electromagnetic field 152 through transmit circuitry 128. In another example, the processor 126 may convert the second resonant frequency into the first resonant frequency through the converter 122. As another example, the processor 126 may filter the converted signal through the receiving circuit 124 according to a designated frequency band and determine an input position of the electronic pen 160 based at least in part on the filtered signal. In another example, when the resonant frequency of the electronic pen 160 is changed from the second resonant frequency to the first resonant frequency, the processor 126 may bypass the converter 122 by a signal including the first resonant frequency. Converter 122 may be controlled.

Through the above-described method, the electronic device 101 may determine the input position of the electronic pen 160 by converting the resonance frequency of the signal through the converter 122 even if the resonance frequency of the electronic pen 160 is changed.

4 is a flowchart illustrating an operation of an electronic device 101 that processes a signal of an electronic pen 160 having a resonant frequency changed according to various embodiments. The operations illustrated in FIG. 4 may refer to operations in which operation 215 of FIG. 2 is performed in more detail.

Referring to FIG. 4, in operation 405, the electronic device 101 may convert the second resonance frequency into the first resonance frequency. For example, the electronic device 101 may perform up-conversion or down-conversion through the converter 122.

In operation 410, the electronic device 101 may filter the converted signal in a frequency band including the first resonance frequency. For example, the electronic device 101 may filter through the receiving circuit 124.

In operation 415, the electronic device 101 may determine an input position of the electronic pen 160 based at least in part on the filtered signal. The input position of the electronic pen 160 may be determined based on at least one of, for example, a resonant frequency of the signal and a strength of the signal.

5 illustrates an operation of detecting a changed resonance frequency by using the communication modules 130 and 174 according to various embodiments.

Referring to FIG. 5, in a network environment 500 (eg, network environment 100 of FIG. 1), the electronic pen 160 may include a resonant circuit 172 and a communication module 174 on the PCB 170. Can be. According to an embodiment of the present disclosure, the communication module 174 may mean a module including at least one of a communication processor (CP), a transceiver, and an antenna. According to an embodiment, the communication module 174 may be referred to as a wireless communication circuit. When the resonant frequency of the electronic pen 160 is changed from the first resonant frequency to the second resonant frequency, the electronic pen 160 transmits information related to the second resonant frequency to the electronic device 101 through the communication module 174. Can be. For example, the electronic pen 160 may transmit information related to the second resonant frequency based on the BLE protocol.

According to an embodiment of the present disclosure, the control circuit 120 may further include a communication module 130 and a memory 140. According to an embodiment of the present disclosure, the control circuit 120 (eg, the processor 126) may receive information related to the second resonance frequency from the electronic pen 160 through the communication module 130. For example, the control circuit 120 may receive information related to the second resonant frequency based on the BLE protocol.

According to an embodiment of the present disclosure, the control circuit 120 may store information related to the second resonant frequency in the memory 140. The processor 126 may control the up-conversion or down-conversion of the converter 122 based on the information related to the second resonant frequency.

6 illustrates a signal flow diagram for transmitting information related to a second resonant frequency according to various embodiments.

Referring to FIG. 6, in operation 605 of the network environment 600 (eg, the network environment 100 of FIG. 1), the electronic pen 160 may transmit information related to the second resonant frequency to the electronic device 101. have. For example, the electronic pen 160 may transmit information related to the second resonant frequency based on the BLE protocol.

In operation 610, the electronic device 101 may store information related to the second resonance frequency. For example, the electronic device 101 may store information related to the second resonance frequency in the memory 140.

In operation 615, the electronic device 101 may transmit a response message indicating that the information related to the second resonant frequency has been received to the electronic pen 160. The response message may include, for example, an acknowledgment (ACK) message according to the BLE protocol. According to an embodiment of the present disclosure, the electronic device 101 may not perform operation 615.

In operation 620, the electronic pen 160 may transmit a signal including the second resonant frequency to the electronic device 101. For example, the electronic pen 160 may transmit a signal according to an EMR method or an AES method.

In operation 625, the electronic device 101 may determine an input position of the electronic pen 160 based at least on a signal including the second resonant frequency and information related to the second resonant frequency. For example, the electronic device 101 may determine the input position of the electronic pen 160 by converting the second resonant frequency to the first resonant frequency and filtering the converted signal.

7 illustrates an operation of determining an input form of the electronic pen 160 by using a phase detector 127 according to various embodiments. FIG. 7 illustrates an embodiment in which the electronic device 101 shown in FIG. 5 further includes a phase detector 127, but the electronic device 101 may omit the communication module 130.

Referring to FIG. 7, in the network environment 700 (eg, the network environment 100 of FIG. 1), the resonant circuit 172 of the electronic pen 160 may include a coil L and a variable capacitor VC. The switch SW may include a switch SW connected in series with the first capacitor C1, the second capacitor C2, and / or the second capacitor C2. The resonance frequency of the signal 151 generated by the resonance circuit 172 may be expressed based on Equation 1 below.

In Equation 1, f is the resonance frequency, L is the inductance value of the coil (L), C is the capacitance of the variable capacitor (VC), the first capacitor (C1), and the second capacitor (C2) capacitance (capacitance) It can represent the sum of the values (C = VC + C1 + C2).

According to an embodiment, the resonant frequency of the signal may be changed according to the input form of the electronic pen 160. For example, if the electronic pen 160 is adjacent to the electronic device 101 (eg, a hovering input), f (resonant frequency) in Equation 1 may be determined by L and C1. In another example, when the electronic pen 160 is pressed (for example, a drawing input) to the electronic device 101, the VC increases according to the force transmitted to the pen tip 164. Can be reduced. For another example, when the button 166 of the electronic pen 160 is pressed by the user, the switch SW of the resonance circuit 172 is connected, and f is determined by L, C1, and C2. The resonance frequency can be reduced. According to an embodiment, the resonance frequency according to the input form of the electronic pen 160 may be expressed as shown in Table 1 below.

Input mode	Hovering input	Drawing input	Enter button	Erasing input
Resonant frequency	562 kHz	531-561 kHz	530 kHz	590 kHz

The numerical values of the resonant frequencies shown in Table 1 are merely exemplary, and embodiments of the present disclosure are not limited to the numerical values shown in Table 1. According to an embodiment of the present disclosure, the electronic device 101 may store information related to Table 1 in the memory 140.

According to an embodiment of the present disclosure, the electronic device 101 may include a phase detector 127 in the control circuit 120. The phase detector 127 may determine a phase difference between a resonance frequency (eg, a second resonance frequency) of a signal received through the sensor panel 112 and a predetermined reference frequency. According to an embodiment, the reference frequency may be substantially the same as the first resonance frequency. According to one embodiment, the reference frequency may be one of the resonant frequencies shown in Table 1. For example, the reference frequency may be a resonance frequency (eg, 562 kHz) corresponding to the hovering input.

According to an embodiment of the present disclosure, the processor 126 may use the electronic pen based on information related to the second resonant frequency stored in the memory 140 and a phase difference between the resonant frequency and the reference frequency of the signal received through the sensor panel 112. The input form of 160 may be determined. For example, when the resonant frequency of the electronic pen 160 is changed from the first resonant frequency (for example, 562 kHz) to the second resonant frequency (for example, 600 kHz), the resonant frequency according to the input type is shown in Table 2 below. Can be.

Resonant frequency of electronic pen	Hovering input	Drawing input	Enter button	Erasing input
First resonant frequency (e.g., 562 kHz)	562 kHz	531-561 kHz	530 kHz	590 kHz
Second resonant frequency (eg 600 kHz)	600 kHz	569-599 kHz	568 kHz	628 kHz

The numerical values of the resonant frequencies shown in Table 2 are merely exemplary, and embodiments of the present disclosure are not limited to the numerical values shown in Table 2.

According to an embodiment of the present disclosure, the processor 126 may detect that the resonance frequency of the electronic pen 160 is changed through the phase detector 127. For example, after the resonance frequency of the electronic pen 160 is changed from the first resonance frequency to the second resonance frequency, the resonance frequency of the electronic pen 160 is changed from the second resonance frequency to the third resonance frequency by various causes. can be changed. Various causes may be caused, for example, when the housing 162 of the electronic pen 160 is changed to a metallic material, when the electronic pen 160 is replaced with another electronic pen having a third resonant frequency, or due to the influence of water. It may include a case where the resonant frequency of the pen 160 is changed to the third resonant frequency. The processor 126 may determine that a signal including the third resonant frequency is detected through the phase difference between the third resonant frequency and the second resonant frequency determined by the phase detector 127. When a signal including the third resonant frequency is detected for a specified time, the processor 126 may determine that the resonant frequency of the electronic pen 160 is changed to the third resonant frequency.

According to an embodiment of the present disclosure, the processor 126 may store information related to the third resonant frequency in the memory 140. When a signal including the third resonant frequency is received, the processor 126 may change the third resonant frequency to the first resonant frequency through the converter 122. According to an embodiment, when the third resonant frequency is substantially the same as the second resonant frequency, the processor 126 may control the converter 122 so that the received signal bypasses the converter 122.

8 is a flowchart illustrating an operation of an electronic device 101 that determines an input form of the electronic pen 160 based at least on a phase difference according to various embodiments of the present disclosure. 8 may be performed after operation 210 of FIG. 2, may be performed in parallel with operations 405 to 415 of FIG. 4, or may be performed in advance.

Referring to FIG. 8, in operation 805, the electronic device 101 (eg, the control circuit 120 or the processor 126) may determine a phase difference between the second resonance frequency and the first resonance frequency. For example, the electronic device 101 may determine the phase difference through the phase detector 127.

In operation 810, the electronic device 101 may determine an input form of the electronic pen 160 based at least on the phase difference. The input form may include, for example, a hovering input, a drawing input, an erasing input, or a switch input. According to an embodiment of the present disclosure, the electronic device 101 may determine an input form of the electronic pen 160 based on information and a phase difference related to the second resonance frequency.

9 is a flowchart illustrating an operation of the electronic device 101 that detects that the resonant frequency of the electronic pen 160 is changed from the second resonant frequency to the third resonant frequency according to various embodiments. Operations shown in FIG. 9 may be performed after operation 415 of FIG. 4.

Referring to FIG. 9, after the resonant frequency of the electronic pen 160 is changed from the first resonant frequency to the second resonant frequency, the resonant frequency of the electronic pen 160 may be changed from the second resonant frequency to the third resonant frequency. Can be. For example, at least a part of the second resonant frequency may be different from the third resonant frequency. For example, the third resonant frequency may be the same as or different from the first resonant frequency. In operation 905, the electronic device 101 (eg, the processor 126) may receive a signal including a third resonant frequency from the electronic pen 160.

In operation 910, the electronic device 101 may determine a phase difference between the third resonance frequency and the second resonance frequency. For example, the electronic device 101 may determine the phase difference between the third resonance frequency and the second resonance frequency through the phase detector 127.

In operation 915, the electronic device 101 may determine whether a signal including the third resonant frequency is detected for a specified time. If a signal including the third resonant frequency is not detected for a specified time, the electronic device 101 may end the algorithm of FIG. 9. When a signal including the third resonant frequency is detected for a predetermined time, in operation 920, the electronic device 101 may determine that the resonant frequency of the electronic pen 160 is changed from the second resonant frequency to the third resonant frequency.

10 is a flowchart illustrating an operation of the electronic device 101 that detects that the resonant frequency of the electronic pen 160 is changed from the first resonant frequency to the second resonant frequency according to various embodiments. 10 may refer to operations in which operation 205 of FIG. 2 is performed in more detail.

Referring to FIG. 10, in operation 1005, the electronic device 101 (eg, the control circuit 120 or the processor 126) may set the resonance frequency of the electronic pen 160 as the first resonance frequency. The electronic device 101 may store information related to an input form of the electronic pen 160 according to the first resonance frequency in the memory 140.

In operation 1010, the electronic device 101 may receive a signal including the second resonant frequency from the electronic pen 160 through the sensor panel 112.

In operation 1015, the electronic device 101 may determine a phase difference between the second resonance frequency and the first resonance frequency.

In operation 1020, the electronic device 101 may determine whether a signal including the second resonant frequency is detected for a specified time. If a signal including the second resonant frequency is not detected for a specified time, the electronic device 101 may terminate the algorithm of FIG. 10 and determine an input position or input form of the electronic pen 160 based on the first resonant frequency. have.

When a signal including the second resonant frequency is detected for a predetermined time, in operation 1025, the electronic device 101 may determine that the resonant frequency of the electronic pen 160 is changed from the first resonant frequency to the second resonant frequency.

11 is a block diagram of an electronic device 1101 (eg, 101 of FIG. 1) in a network environment 1100, according to various embodiments. Referring to FIG. 11, in the network environment 1100, the electronic device 1101 communicates with the electronic device 1102 through the first network 1119 (eg, a short-range wireless communication network) or the second network 1199. The electronic device 1104 or the server 1108 may be communicated through a remote wireless communication network. According to an embodiment, the electronic device 1101 may communicate with the electronic device 1104 through the server 1108. According to an embodiment, the electronic device 1101 may include a processor 1120, a memory 1130, an input device 1150, an audio output device 1155, a display device 1160, an audio module 1170, and a sensor module. 1176, interface 1177, haptic module 1179, camera module 1180, power management module 1188, battery 1189, communication module 1190, subscriber identification module 1196, or antenna module 1197 ) May be included. In some embodiments, at least one of the components (eg, the display device 1160 or the camera module 1180) may be omitted or one or more other components may be added to the electronic device 1101. In some embodiments, some of these components may be implemented in one integrated circuit. For example, the sensor module 1176 (eg, fingerprint sensor, iris sensor, or illuminance sensor) may be implemented embedded in the display device 1160 (eg, display).

The processor 1120 may execute, for example, software (eg, a program 1140) to execute at least one other component (eg, hardware or software component) of the electronic device 1101 connected to the processor 1120. It can control and perform various data processing or operations. According to one embodiment, as at least part of the data processing or operation, the processor 1120 may transmit instructions or data received from another component (eg, the sensor module 1176 or the communication module 1190) to the volatile memory 1132. Can be loaded into, processed in a command or data stored in the volatile memory 1132, and stored in the non-volatile memory 1134. According to one embodiment, the processor 1120 is a main processor 1121 (e.g., a central processing unit or an application processor), and a coprocessor 1123 (e.g., a graphics processing unit, an image signal processor) that can operate independently or together. , Sensor hub processor, or communication processor). Additionally or alternatively, coprocessor 1123 may be configured to use lower power than main processor 1121, or to be specific to a designated function. The coprocessor 1123 may be implemented separately from or as part of the main processor 1121.

The coprocessor 1123 may, for example, replace the main processor 1121 while the main processor 1121 is in an inactive (eg, sleep) state, or the main processor 1121 may be active (eg, execute an application). Together with the main processor 1121, at least one of the components of the electronic device 1101 (eg, the display device 1160, the sensor module 1176, or the communication module 1190). Control at least some of the functions or states associated with the. According to one embodiment, the coprocessor 1123 (eg, an image signal processor or communication processor) may be implemented as part of other functionally related components (eg, camera module 1180 or communication module 1190). have.

The memory 1130 may store various data used by at least one component of the electronic device 1101 (for example, the processor 1120 or the sensor module 1176). The data may include, for example, software (eg, the program 1140) and input data or output data for a command related thereto. The memory 1130 may include a volatile memory 1132 or a nonvolatile memory 1134.

The program 1140 may be stored as software in the memory 1130, and may include, for example, an operating system 1142, middleware 1144, or an application 1146.

The input device 1150 may receive a command or data to be used for a component (for example, the processor 1120) of the electronic device 1101 from the outside (for example, a user) of the electronic device 1101. The input device 1150 may include, for example, a microphone, a mouse, a keyboard, or a digital pen (eg, a stylus pen).

The sound output device 1155 may output a sound signal to the outside of the electronic device 1101. The sound output device 1155 may include, for example, a speaker or a receiver. The speaker may be used for general purposes such as multimedia playback or recording playback, and the receiver may be used to receive an incoming call. According to one embodiment, the receiver may be implemented separately from or as part of a speaker.

The display device 1160 may visually provide information to the outside (eg, a user) of the electronic device 1101. The display device 1160 may include, for example, a display, a hologram device, or a projector and a control circuit for controlling the device. According to an embodiment, the display device 1160 may include touch circuitry configured to sense a touch, or sensor circuit (eg, a pressure sensor) set to measure the strength of the force generated by the touch. have.

The audio module 1170 may convert sound into an electrical signal or, conversely, convert an electrical signal into a sound. According to an embodiment, the audio module 1170 acquires sound through the input device 1150, or an external electronic device (eg, connected directly or wirelessly to the sound output device 1155 or the electronic device 1101). Sound may be output through the electronic device 1102 (eg, a speaker or a headphone).

The sensor module 1176 detects an operating state (eg, power or temperature) of the electronic device 1101 or an external environmental state (eg, a user state), and generates an electrical signal or data value corresponding to the detected state. can do. According to an embodiment, the sensor module 1176 may include, for example, a gesture sensor, a gyro sensor, an air pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared sensor, a biometric sensor, It may include a temperature sensor, a humidity sensor, or an illuminance sensor.

The interface 1177 may support one or more designated protocols that may be used for the electronic device 1101 to be directly or wirelessly connected to an external electronic device (eg, the electronic device 1102). According to an embodiment, the interface 1177 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

The connection terminal 1178 may include a connector through which the electronic device 1101 may be physically connected to an external electronic device (eg, the electronic device 1102). According to an embodiment, the connection terminal 1178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).

The haptic module 1179 may convert an electrical signal into a mechanical stimulus (eg, vibration or movement) or an electrical stimulus that can be perceived by the user through tactile or kinesthetic senses. According to one embodiment, the haptic module 1179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

The camera module 1180 may capture still images and videos. According to one embodiment, the camera module 1180 may include one or more lenses, image sensors, image signal processors, or flashes.

The power management module 1188 may manage power supplied to the electronic device 1101. According to one embodiment, the power management module 388 may be implemented, for example, as at least part of a power management integrated circuit (PMIC).

The battery 1189 may supply power to at least one component of the electronic device 1101. According to one embodiment, the battery 1187 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell or a fuel cell.

The communication module 1190 may be a direct (eg wired) communication channel or wireless communication channel between the electronic device 1101 and an external electronic device (eg, the electronic device 1102, the electronic device 1104, or the server 1108). Establish and perform communication over established communication channels. The communication module 1190 may operate independently of the processor 1120 (eg, an application processor) and include one or more communication processors that support direct (eg, wired) or wireless communication. According to one embodiment, the communication module 1190 is a wireless communication module 1192 (eg, a cellular communication module, a near field communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 1194 (eg It may include a local area network (LAN) communication module, or a power line communication module. Corresponding ones of these communication modules are the first network 1198 (e.g. short range communication network such as Bluetooth, WiFi direct or infrared data association (IrDA)) or the second network 1199 (e.g. cellular network, Internet, or Communicate with external electronic devices via a telecommunications network, such as a computer network (eg, LAN or WAN). These various types of communication modules may be integrated into one component (eg, a single chip) or may be implemented by a plurality of components (eg, a plurality of chips) separate from each other. The wireless communication module 1192 may use subscriber information (e.g., international mobile subscriber identifier (IMSI)) stored in the subscriber identification module 1196 in a communication network such as the first network 1198 or the second network 1199. The electronic device 1101 may be checked and authenticated.

The antenna module 1197 may transmit or receive a signal or power to an external device (eg, an external electronic device). According to an embodiment, the antenna module may include one antenna including a radiator made of a conductor or a conductive pattern formed on a substrate (eg, a PCB). According to an embodiment, the antenna module 1197 may include a plurality of antennas. In this case, at least one antenna suitable for a communication scheme used in a communication network, such as the first network 1198 or the second network 1199, may be, for example, from the plurality of antennas by the communication module 1190. Can be selected. The signal or power may be transmitted or received between the communication module 1190 and the external electronic device through the selected at least one antenna. According to some embodiments, in addition to the radiator, other components (eg, RFICs) may be further formed as part of the antenna module 1197.

At least some of the components are connected to each other and connected to each other through a communication method between peripheral devices (eg, a bus, a general purpose input and output (GPIO), a serial peripheral interface (SPI), or a mobile industry processor interface (MIPI)). For example, commands or data).

According to an embodiment of the present disclosure, the command or data may be transmitted or received between the electronic device 1101 and the external electronic device 1104 through the server 1108 connected to the second network 1199. Each of the electronic devices 1102 and 1104 may be the same or different type of device as the electronic device 1101. According to an embodiment, all or some of the operations performed by the electronic device 1101 may be performed by one or more external devices of the external electronic devices 1102, 1104, or 1108. For example, when the electronic device 1101 needs to perform a function or service automatically or in response to a request from a user or another device, the electronic device 1101 may instead execute the function or service itself. In addition to or in addition, one or more external electronic devices may be requested to perform at least a part of the function or the service. The one or more external electronic devices that receive the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and transmit a result of the execution to the electronic device 1101. The electronic device 1101 may process the result as it is or additionally and provide it as at least part of a response to the request. For this purpose, for example, cloud computing, distributed computing, or client-server computing technology. This can be used.

As described above, the electronic device (eg, the electronic device 101 of FIG. 1) is located within the housing (eg, the housing 105 of FIG. 1), the housing, viewed through the housing, and a stylus pen (eg, A display panel configured to sense an input of the electronic pen 160 of FIG. 1 (eg, the display panel 110 of FIG. 1), a control circuit that controls the display panel (eg, the control circuit 120 of FIG. 1), A communication module (eg, the communication module 130 of FIG. 5) located in the housing, a processor (eg, the processor 126 of FIG. 1) located within the housing and operatively connected to the display panel and the communication module. And a memory (eg, memory 140 of FIG. 5) located within the housing and operatively coupled to the processor, wherein the memory, when executed, is executed by the processor, through the communication module, to the stylus pen. From the styler Receive a first signal comprising information about at least one frequency associated with a resonant circuit in the span (e.g., resonant circuit 172 of FIG. 1), and using at least some of the information, at least a portion of the control circuit It may be characterized by storing instructions to adjust the.

According to an embodiment of the present disclosure, the electronic device may further include a hole accommodating the stylus pen in the housing.

According to an embodiment of the present disclosure, the communication module may be configured to support BLE.

According to an embodiment of the present disclosure, the processor may receive the first signal after the electronic device is paired with the stylus pen.

According to an embodiment of the present disclosure, the control circuit may provide a signal generated based on one of the at least one frequency to the processor, and the instructions may generate an event on the display panel based on the generated signal. And may be configured to generate.

According to an embodiment of the present disclosure, the at least one frequency includes a plurality of frequencies related to at least two of a touch, hovering, drawing, switching, or erasing operation with respect to the display panel by the stylus pen. can do.

According to one embodiment, the control circuit includes a converter (eg, converter 122 of FIG. 3), a phase detector (eg, phase detector 127 of FIG. 7), and a receiving circuit (eg, receiving circuit 124 of FIG. 3). It may be characterized by including)).

According to an embodiment of the present disclosure, the converter may have a frequency setting value adjusted based on the at least one frequency.

As described above, in the method of the electronic device (eg, the electronic device 101 of FIG. 1), the resonant frequency of a signal received from the electronic pen (eg, the electronic pen 160 of FIG. 1) may be set at a first resonance frequency. Detecting a change to a second resonant frequency, receiving a signal including the second resonant frequency from the electronic pen, and determining an input position of the electronic pen based at least in part on the received signal It may include.

According to an embodiment of the present disclosure, the detecting of the resonant frequency from the first resonant frequency to the second resonant frequency may include receiving information related to the second resonant frequency from the electronic pen. The determining of the input position of the electronic pen may include determining the input position of the electronic pen based at least on the information related to the second resonant frequency and the signal including the second resonant frequency.

According to an embodiment of the present disclosure, receiving information related to the second resonance frequency from the electronic pen may include receiving information related to the second resonance frequency using a BLE protocol.

According to an embodiment of the present disclosure, the method may further include determining a phase difference between the second resonance frequency and the first resonance frequency, and determining an input form of the electronic pen based at least on the phase difference. .

According to an embodiment, the input form of the electronic pen may include a hovering input, a drawing input, an erasing input, or a switching input.

According to an embodiment of the present disclosure, the method may include receiving a signal including a third resonant frequency from the electronic pen, determining a second phase difference between the third resonant frequency and the second resonant frequency, and The method may further include determining that the resonance frequency of the electronic pen is changed from the second resonance frequency to the third resonance frequency when the signal including the third resonance frequency is detected for a predetermined time.

According to an embodiment of the present disclosure, the method may further include radiating an electromagnetic field, and receiving the signal including the second resonant frequency from the electronic pen may further include generating the second resonant frequency derived from the electromagnetic field. The method may include receiving a signal from the electronic pen.

As described above, the electronic device (eg, the electronic pen 160 of FIG. 1) includes a long extending housing (eg, the housing 162 of FIG. 1), and a dielectric portion (eg, disposed at one end of the housing). Pen tip 164 of FIG. 1, a resonant circuit (eg, resonant circuit 172 of FIG. 1) located within the housing and including at least one electronic element, a communication module (eg, FIG. 5) located within the housing Communication module (174), and a memory (not shown) located within the housing, operatively coupled to the communication module, and storing information regarding at least one frequency associated with the electronic device; The module may be configured to wirelessly connect to an external electronic device (for example, the electronic device 101 of FIG. 1) and to transmit information about the frequency using the wireless connection.

According to an embodiment of the present disclosure, the communication module may be configured to support BLE.

According to an embodiment of the present disclosure, the electronic device may include at least one of a coil, an inductor, and a capacitor.

According to an embodiment of the present disclosure, the communication module is configured to receive a signal having a different frequency from the external electronic device, and the at least one electronic device generates a signal having the frequency based at least on the received signal. Can be.

According to an embodiment of the present disclosure, the input form of the electronic device may include a hovering input, a drawing input, a switching input, or an erasing input.

Electronic devices according to various embodiments of the present disclosure may be various types of devices. The electronic device may include, for example, a portable communication device (eg, a smartphone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance device. Electronic devices according to embodiments of the present disclosure are not limited to the above-described devices.

Various embodiments of the present document and terminology used herein are not intended to limit the technical features described in the present specification to specific embodiments, but should be understood to include various changes, equivalents, or substitutes for the embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of the noun corresponding to the item may include one or more of the items, unless the context clearly indicates otherwise. In this document, "A or B", "at least one of A and B", "at least one of A or B," "A, B or C," "at least one of A, B and C," and "A Phrases such as "at least one of, B, or C" may include any one of the items listed together in the corresponding one of the phrases, or any possible combination thereof. Terms such as "first", "second", or "first" or "second" may be used merely to distinguish a component from other corresponding components, and to separate the components from other aspects (e.g. Order). Some (eg, first) component may be referred to as "coupled" or "connected" to another (eg, second) component, with or without the term "functionally" or "communicatively". When mentioned, it means that any component can be connected directly to the other component (eg, by wire), wirelessly, or via a third component.

As used herein, the term "module" may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit. The module may be an integral part or a minimum unit or part of the component, which performs one or more functions. For example, according to one embodiment, the module may be implemented in the form of an application-specific integrated circuit (ASIC).

Various embodiments of the present disclosure may include one or more instructions stored in a storage medium (eg, internal memory 1136 or external memory 1138) that can be read by a machine (eg, electronic device 1101). It may be implemented as software (eg, program 1140) including the. For example, the processor (eg, the processor 1120) of the device (eg, the electronic device 1101) may call and execute at least one of the one or more instructions stored from the storage medium. This enables the device to be operated to perform at least one function in accordance with the at least one command invoked. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' means only that the storage medium is a tangible device and does not contain a signal (e.g., electromagnetic waves), which is the case when data is stored semi-permanently on the storage medium. It does not distinguish cases where it is temporarily stored.

According to one embodiment, a method according to various embodiments disclosed herein may be provided included in a computer program product. The computer program product may be traded between the seller and the buyer as a product. The computer program product is distributed in the form of a device-readable storage medium (e.g. compact disc read only memory (CD-ROM)), or through an application store (e.g. Play Store ™) or two user devices ( Example: smartphones) can be distributed (eg downloaded or uploaded) directly or online. In the case of on-line distribution, at least a portion of the computer program product may be stored at least temporarily on a device-readable storage medium such as a server of a manufacturer, a server of an application store, or a relay server, or may be temporarily created.

According to various embodiments, each component (eg, module or program) of the above-described components may include a singular or plural entity. According to various embodiments, one or more of the aforementioned components or operations may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (eg, a module or a program) may be integrated into one component. In this case, the integrated component may perform one or more functions of the component of each of the plurality of components the same as or similar to that performed by the corresponding component of the plurality of components before the integration. . According to various embodiments, operations performed by a module, program, or other component may be executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations may be executed in a different order, or omitted. Or one or more other actions may be added.

Claims (15)

1. housing;

   A display panel located within the housing and viewable through the housing and configured to sense a stylus pen input;

   A control circuit for controlling the display panel;

   A communication module located within the housing;

   A processor located within the housing and operatively connected to the display panel and the communication module;

   A memory located within the housing and operatively coupled to the processor,

   When the memory is executed, the processor,

   Receive, via the communication module, a first signal comprising information about at least one frequency associated with a resonant circuit in the stylus pen from the stylus pen,

   And store instructions to adjust at least a portion of the control circuit using at least some of the information.
2. The electronic device of claim 1, further comprising a hole in the housing for receiving the stylus pen.
3. The electronic device of claim 1, wherein the communication module is configured to support Bluetooth Low Energy (BLE).
4. The method according to claim 1,

   And after the electronic device is paired with the stylus pen, receiving the first signal.
5. The method according to claim 1, wherein the control circuit,

   Providing a signal generated based on one of the at least one frequency to the processor,

   And the instructions are configured to generate an event on the display panel based on the generated signal.
6. The method according to claim 5, wherein the at least one frequency is,

   And a plurality of frequencies associated with at least two of a touch, hover, drawing, switching, or erasing operation with respect to the display panel by the stylus pen.
7. The apparatus of claim 1 wherein the control circuit comprises a converter, a phase detector and a receiver circuit.
8. The method according to claim 7, wherein the converter,

   And a frequency setting value adjusted based on the at least one frequency.
9. In the method of an electronic device,

   Detecting that the resonant frequency of the signal received from the electronic pen is changed from the first resonant frequency to the second resonant frequency;

   Receiving a signal including the second resonant frequency from the electronic pen;

   Determining an input position of the electronic pen based at least in part on the received signal.
10. The method of claim 9, wherein the detecting of the change of the resonance frequency from the first resonance frequency to the second resonance frequency includes:

    Receiving information related to the second resonant frequency from the electronic pen,

    Determining an input position of the electronic pen includes determining an input position of the electronic pen based at least on the information related to the second resonant frequency and a signal comprising the second resonant frequency. .
11. The method of claim 10, wherein the receiving of the information related to the second resonant frequency from the electronic pen comprises:

    Receiving information related to the second resonant frequency using a BLE protocol.
12. The method according to claim 9,

    Determining a phase difference between the second resonant frequency and the first resonant frequency; And

    Determining the input form of the electronic pen based at least on the phase difference.
13. The input form of the electronic pen according to claim 12,

    A hovering input, a drawing input, an erasing input, or a switching input.
14. The method according to claim 12,

    Receiving a signal including a third resonant frequency from the electronic pen;

    Determining a second phase difference between the third resonant frequency and the second resonant frequency; And

    And determining that the resonant frequency of the electronic pen is changed from the second resonant frequency to the third resonant frequency when a signal comprising the third resonant frequency is detected for a specified time.
15. The method according to claim 9,

    Further comprising radiating an electromagnetic field,

    Receiving a signal comprising the second resonant frequency from the electronic pen comprises receiving a signal from the electronic pen including the second resonant frequency derived from the electromagnetic field.

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