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WO2024258017A1 - Stylo numérique capable de commuter en fréquence - Google Patents

Stylo numérique capable de commuter en fréquence Download PDF

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Publication number
WO2024258017A1
WO2024258017A1 PCT/KR2024/004531 KR2024004531W WO2024258017A1 WO 2024258017 A1 WO2024258017 A1 WO 2024258017A1 KR 2024004531 W KR2024004531 W KR 2024004531W WO 2024258017 A1 WO2024258017 A1 WO 2024258017A1
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WO
WIPO (PCT)
Prior art keywords
circuit
additional
digital pen
common circuit
external device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/KR2024/004531
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English (en)
Korean (ko)
Inventor
김태수
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020230100482A external-priority patent/KR20240176740A/ko
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of WO2024258017A1 publication Critical patent/WO2024258017A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks

Definitions

  • Various embodiments of the present invention relate to a frequency switchable digital pen.
  • Electronic devices are being developed to be able to receive various inputs from a user through a specified input device (e.g., a digital pen) connected to the electronic device via wireless communication.
  • the electronic device can identify a location on the electronic device specified by an input device having a pen function (also referred to herein as a “digital pen”) and perform a corresponding function.
  • a pen function also referred to herein as a “digital pen”
  • An electronic device can determine the position of a stylus pen through interaction with the stylus pen. For example, the electronic device can detect a magnetic field generated from the stylus pen using an electromagnetic induction (EMR) method. The electronic device can identify the position of the stylus pen based on the induced electromotive force generated by the magnetic field for each channel. Alternatively, the electronic device can be connected to the stylus pen through short-range communication (e.g., Bluetooth or BLE (Bluetooth low energy)). The electronic device can detect the position of the stylus pen based on an electric signal generated by the stylus pen, and receive a signal indicating writing pressure through short-range communication with the stylus pen.
  • EMR electromagnetic induction
  • a digital pen may include a coil that generates a magnetic field using an applied current based on available frequency information of an external device.
  • a digital pen may include a switch that operates based on the generated magnetic field to switch a connection between a common circuit and a plurality of additional circuits.
  • a digital pen may include the common circuit and the plurality of additional circuits, and may include an additional circuit among the plurality of additional circuits connected to the common circuit by the switch, and a resonant circuit that forms a resonant frequency based on the common circuit.
  • a method performed by a digital pen may include an operation of generating a magnetic field by using an applied current based on available frequency information of an external device by a coil.
  • a method performed by a digital pen may include an operation of switching a connection between a common circuit and a plurality of additional circuits by a switch that operates based on the generated magnetic field.
  • a method performed by a digital pen may include an operation of forming a resonant frequency based on an additional circuit connected to the common circuit by the switch among the plurality of additional circuits by a resonant circuit including the common circuit and the plurality of additional circuits.
  • FIG. 1 illustrates an example of an interface system according to various embodiments.
  • FIG. 2 is a block diagram illustrating an example of a digital pen according to various embodiments.
  • Figure 3 is an exploded perspective view of a digital pen in various embodiments.
  • FIG. 4 illustrates examples of digital pens according to various embodiments.
  • FIGS. 5A and 5B are diagrams illustrating examples of switching between additional circuits connected to a common circuit according to the operation of a switch according to various embodiments.
  • FIG. 6 is a flowchart illustrating an example of a method of operating a digital pen according to various embodiments.
  • FIGS. 7A and 7B are diagrams illustrating examples of switching between additional circuits connected to a common circuit according to the operation of a plurality of switches according to various embodiments.
  • first or second may be used to describe various components, such terms should be construed only for the purpose of distinguishing one component from another.
  • a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.
  • FIG. 1 illustrates an example of an interface system according to various embodiments.
  • the interface system (100) may include an external device (101) and a digital pen (102).
  • the interface system (100) may be referred to as at least one of an electronic system, a touch system, an input/output system, or a digitizer system.
  • the external device (101) may include a display panel, an optical film disposed over the display panel, a lower member disposed under the display panel, and a digitizer disposed between the display panel and the lower member.
  • the digitizer may include a plurality of loop coils that generate an electromagnetic field of a preset resonant frequency.
  • the digital pen (102) may be configured to transmit an output signal based on an electromagnetic resonance (EMR) method to an external device (101).
  • the digital pen (102) may generate (e.g., induce) a signal through a resonant circuit based on an electromagnetic field generated from a digitizer of the external device (101).
  • a resonant circuit may include a common circuit and a plurality of additional circuits.
  • the digital pen (102) may be referred to as an input device, a stylus pen, or an electromagnetic resonance pen.
  • the external device (101) can determine the input position or input type of the digital pen (102) at least based on a signal of the digital pen (102) detected on a display module of the external device (101) (e.g., the display module (160) of FIG. 1).
  • FIG. 2 is a block diagram illustrating an example of a digital pen according to various embodiments.
  • a digital pen (200) may include a communication circuit (205), a processor (210), a memory (215), a coil (220), a power circuit (225) (e.g., a power circuit including a battery), a switch (230), a charging circuit (235), a resonant circuit (240), an antenna (245), and/or a trigger circuit (250).
  • a communication circuit 205
  • a processor 210
  • a memory e.g., a power circuit including a battery
  • a switch 230
  • a charging circuit e.g., a charging circuit including a battery
  • a switch 230
  • a charging circuit e.g., a charging circuit including a battery
  • a switch 230
  • a charging circuit e.g., a charging circuit including a battery
  • a switch 230
  • a charging circuit 235
  • a resonant circuit 240
  • an antenna 245
  • a trigger circuit 250
  • the processor (210), the resonant circuit (240), and/or the communication circuit (205) may be electrically connected to the memory (215), the charging circuit (235), the power circuit (225), the antenna (245), or the trigger circuit (250).
  • a digital pen (200) according to one embodiment may be composed of only a resonant circuit and a button.
  • the communication circuit (205) may be configured to perform a wireless communication function between the communication module of the digital pen (200) and the external device. According to one embodiment, the communication circuit (205) may transmit status information and input information of the digital pen (200) to the external device using a short-range communication method. For example, the communication circuit (205) may transmit direction information (e.g., motion sensor data) of the digital pen (200) obtained through the trigger circuit (250), voice information input through a microphone, or remaining battery information included in the power circuit (225) to the external device.
  • the short-range communication method may include at least one of Bluetooth, BLE (Bluetooth low energy), or wireless LAN.
  • the communication circuit (205) can receive the available frequency information of the external device from the external device based on establishing communication with the external device. In one embodiment, the communication circuit (205) can receive the available frequency information of the external device from the external device based on the proximity or contact of the tip of the digital pen with the external device.
  • the processor (210) may include a generic processor configured to execute a customized hardware module or software (e.g., an application program).
  • the processor may include hardware components (functions) or software elements (programs) including at least one of various sensors provided in the digital pen (200), a data measurement module, an input/output interface, a module for managing a state or environment of the digital pen (200), or a communication module.
  • the processor (210) may include, for example, one or a combination of two or more of hardware, software, or firmware.
  • the processor (210) may receive a proximity signal corresponding to an electromagnetic field signal generated from a digitizer of an external device (e.g., a display device (160)) through the resonance circuit (240). When the proximity signal is identified, the resonance circuit (240) may be controlled to transmit an electromagnetic resonance (EMR) input signal to the external device.
  • EMR electromagnetic resonance
  • the processor (210) may select a resonant frequency based on available frequency information of an external device received via the communication circuit (205).
  • the processor (210) may select a resonant frequency from among a plurality of candidate frequencies based on the available frequency information.
  • the plurality of candidate frequencies may correspond to a plurality of additional circuits.
  • the processor (210) may determine a current to be applied to the coil (220) based on the selected resonant frequency. For example, if the selected resonant frequency corresponds to the first additional circuit (242), the processor (210) may determine the current to be applied to the coil (220) as a current less than or equal to a threshold current size.
  • the processor (210) may determine the current to be applied to the coil (220) as a current exceeding the threshold current size.
  • the processor (210) can cause the power circuit (225) to apply a determined current to the coil (220).
  • the memory (215) can store information related to the operation of the digital pen (200).
  • the information related to the operation of the digital pen (200) can include information for communication with an external device, frequency information related to the input operation of the digital pen (200), information for determining a resonant frequency, or information for determining a current to be applied to a coil (220).
  • the power circuit (225) may be configured to store power required for the operation of the digital pen (200).
  • the battery included in the power circuit (225) may include, for example, a lithium-ion battery or a capacitor, and may be rechargeable or replaceable. According to one embodiment, the battery included in the power circuit (225) may be charged using power (for example, a direct current signal (direct current power)) provided from the charging circuit (235).
  • the power circuit (225) can apply a current determined by the processor (210) to the coil (220).
  • the coil (220) can generate a magnetic field based on the applied current.
  • the coil (220) can generate a magnetic field using the applied current based on the available frequency information of the external device.
  • the processor (210) can determine the current to be applied to the coil (220) based on the available frequency information of the external device.
  • the power circuit (225) can apply the determined current to the coil (220).
  • the coil (220) can generate a magnetic field less than a threshold magnetic field intensity based on a current flowing less than a threshold current size.
  • the coil (220) can generate a magnetic field exceeding a threshold magnetic field intensity based on a current flowing greater than a threshold current size.
  • the switch (230) can be operated based on the magnetic field generated by the coil (220) to switch the connection between the common circuit (241) and the plurality of additional circuits.
  • the switch (230) can connect an additional circuit having a corresponding resonant frequency among the plurality of additional circuits to the common circuit (241) in response to the magnetic field generated by the coil (220).
  • the switch (230) may be implemented as a reed switch.
  • the switch (230) may include a conductive wire (also referred to as a 'reed' herein).
  • the switch (230) may include a sealed tube and conductive wires accommodated inside the sealed tube.
  • the conductive wire may be a magnetic material and may have elasticity.
  • a first end of the conductive wire (e.g., the first conductive wire) of the switch (230) may be connected to a common circuit (241).
  • a second end of the conductive wire (e.g., the first conductive wire) of the switch (230) may selectively form a contact with one of a plurality of additional circuits.
  • one end of the first conductive wire of the switch (230) may be connected to the common circuit (241).
  • One end of the second conductive wire of the switch (230) may be connected to the first additional circuit (242).
  • the common circuit (241) and the first additional circuit (242) may be connected.
  • the common circuit (241) and the first additional circuit (242) may be disconnected.
  • the other end of the first conductive wire and the other end of the second conductive wire may be magnetized with different polarities, thereby generating a magnetic attraction force.
  • the other end of the first conductive wire and the other end of the second conductive wire may form a contact.
  • the magnetic field is removed, the other end of the first conductive wire and the other end of the second conductive wire can be separated from each other by the elastic restoring force of the first conductive wire and the second conductive wire.
  • the switch (230) is not limited to forming a contact only when an external magnetic field is formed.
  • the switch (230) may further include a third conductive wire together with the first conductive wire and the second conductive wire.
  • One end of the third conductive wire of the switch (230) may be connected to a second additional circuit (243).
  • the common circuit (241) and the second additional circuit (243) may be connected.
  • the common circuit (241) and the second additional circuit (243) may be disconnected.
  • the switch (230) can connect the common circuit (241) with the first additional circuit (242), and when a magnetic field is not applied from the outside, the switch (230) can connect the common circuit (241) with the second additional circuit (243).
  • the switch (230) may be implemented as one switch (230) for a plurality of additional circuits, or as one switch (230) for each additional circuit.
  • An embodiment implemented as one switch (230) for a plurality of additional circuits is described in more detail below in FIGS. 5A and 5B
  • an embodiment implemented as one switch (230) for each additional circuit is described in more detail below in FIGS. 6 , 7A, and 7B .
  • the resonant circuit (240) may include at least one of a coil, an inductor, or a capacitor.
  • the resonant circuit (240) may be used by the digital pen (200) to generate a signal including a resonant frequency.
  • the digital pen (200) may use at least one of an EMR (electro-magnetic resonance) method, an AES (active electrostatic) method, or an ECR (electrically coupled resonance) method.
  • EMR electro-magnetic resonance
  • AES active electrostatic
  • ECR electrically coupled resonance
  • the digital pen (200) may generate a signal by using capacitive coupling with an external device.
  • the digital pen (200) transmits a signal by the ECR method
  • the digital pen (200) can generate a signal including a resonant frequency based on an electric field generated from a capacitive device of an electronic device.
  • the resonant circuit (240) can be used to change the intensity or frequency of an electromagnetic field according to a user's manipulation state.
  • the resonant circuit (240) can provide a frequency for recognizing a hovering input, a drawing input, a button input, or an erasing input.
  • the resonant circuit (240) may include a common circuit (241) and a plurality of additional circuits (e.g., a first additional circuit (242) and a second additional circuit (243)).
  • the resonant circuit (240) may form a resonant frequency based on an additional circuit connected to the common circuit (241) by a switch (230) among the plurality of additional circuits and the common circuit (241).
  • the common circuit (241) may have a common frequency component.
  • Each of the plurality of additional circuits may have an additional frequency component corresponding to the corresponding additional circuit.
  • the resonant circuit (240) may form a resonant frequency based on the common frequency component of the common circuit (241) and the additional frequency component of the additional circuit connected to the common circuit (241).
  • the switch (230) switches between a plurality of additional circuits connected to the common circuit (241)
  • the resonant frequency can be changed according to a change in the additional frequency component related to the resonant frequency.
  • the resonant circuit (240) according to one embodiment can support a plurality of resonant frequencies.
  • the resonant circuit (240) can generate a signal having a resonant frequency of the resonant circuit (240) based on the proximity or contact of the digital pen (200) with an external device.
  • the external device can obtain a user input based on the signal received from the digital pen (200).
  • the charging circuit (235) can, when connected to the resonant circuit (240) based on the switching circuit, rectify the resonant signal generated from the resonant circuit (240) into a DC signal and provide it to the power circuit (225).
  • the external device can include a structure into which the digital pen (200) can be inserted, and the digital pen (200) can use the voltage level of the DC signal detected by the charging circuit (235) to determine whether the digital pen (200) is inserted into the external device.
  • the antenna (245) can be used to transmit or receive signals or power to or from the outside (e.g., an external device).
  • the digital pen (200) can include a plurality of antennas (245), and among them, at least one antenna (245) suitable for a communication method can be selected. Through the selected at least one antenna (245), the communication circuit (205) can exchange signals or power with an external electronic device.
  • the trigger circuit (250) may include at least one button or sensor circuit.
  • the processor (210) may check the input method (e.g., touch or press) or type (e.g., EMR button or BLE button) of the button of the digital pen (200).
  • the sensor circuit may generate an electric signal or data value corresponding to an internal operating state or an external environmental state of the digital pen (200).
  • the sensor circuit may include at least one of a motion sensor, a battery level detection sensor, a pressure sensor, a light sensor, a temperature sensor, a geomagnetic sensor, and a biometric sensor.
  • the trigger circuit (250) may transmit a trigger signal to an external device using an input signal of a button or a signal through a sensor.
  • Figure 3 is an exploded perspective view of a digital pen in various embodiments.
  • a digital pen may include a pen housing (300) that constitutes the outer appearance of the digital pen and an inner assembly inside the pen housing (300).
  • the inner assembly may include all of the various components mounted inside the pen and may be inserted into the pen housing (300) in a single assembly operation.
  • the pen housing (300) has a shape that is elongated between the first end (300a) and the second end (300b), and may include a storage space therein.
  • the pen housing (300) may have an elliptical cross-section consisting of a long axis and a short axis, and may be formed in the shape of an elliptical column as a whole.
  • the storage space of the external device may also have an elliptical cross-section corresponding to the shape of the pen housing (300).
  • the pen housing (300) may include a synthetic resin (e.g., plastic) and/or a metallic material (e.g., aluminum).
  • the second end (300b) of the pen housing (300) may be composed of a synthetic resin material.
  • the inner assembly may have a shape that is elongated to correspond to the shape of the pen housing (300).
  • the inner assembly may be largely divided into two configurations along the longitudinal direction.
  • the inner assembly may include a coil portion (320) arranged at a position corresponding to the second end (300b) of the pen housing (300), and a circuit board portion (330) arranged at a position corresponding to the body of the housing.
  • the coil portion (320) may include a pen tip (321) exposed to the outside of the second end (300b) when the internal assembly is fully inserted into the pen housing (300), a packing ring (322), a coil (323) wound multiple times, and/or a pressure sensing portion (324) for obtaining a change in pressure according to the pressurization of the pen tip (321).
  • the packing ring (322) may include epoxy, rubber, urethane, or silicone.
  • the packing ring (322) may be provided for the purpose of waterproofing and dustproofing, and may protect the coil portion (320) and the circuit board portion (330) from submersion or dust.
  • the coil (323) can form a resonant frequency in a set frequency band (e.g., 500 kHz), and can be combined with at least one element (e.g., a capacitive element) to adjust the resonant frequency formed by the coil (323) within a certain range.
  • a set frequency band e.g. 500 kHz
  • at least one element e.g., a capacitive element
  • the circuit board portion (330) may include a printed circuit board (332), a base (331) surrounding at least one surface of the printed circuit board (332), and an antenna.
  • a substrate mounting portion (333) on which a printed circuit board (332) is placed is formed on an upper surface of the base (331), and the printed circuit board (332) may be fixed in a state of being mounted on the substrate mounting portion (333).
  • the printed circuit board (332) may include an upper surface and a lower surface, and a variable capacity capacitor or a side switch (334) connected to a coil (323) may be placed on the upper surface, and a charging circuit, a battery, or a communication circuit may be placed on the lower surface.
  • the battery may include an EDLC (electric double layered capacitor).
  • the charging circuit is located between the coil (323) and the battery and may include voltage detector circuitry and a rectifier.
  • the internal assembly may further include an ejection member (not shown) positioned at a position corresponding to the first end (300a) of the pen housing (300).
  • the ejection member may include a configuration for ejecting the digital pen from the storage space of the external device.
  • the ejection member may include a shaft and an ejection body and a button portion that are arranged around the shaft and form the overall outer shape of the ejection member.
  • the portion including the shaft and the ejection body is surrounded by the first end (300a) of the pen housing (300), and the button portion may be exposed to the outside of the first end (300a).
  • a plurality of components not shown, for example, cam members or elastic members, may be arranged inside the ejection body to form a push-pull structure.
  • the button portion may be substantially coupled with the shaft and may perform a linear reciprocating motion with respect to the ejection body.
  • the button portion may include a button having a catch structure formed so that a user can eject the digital pen using a fingernail.
  • the digital pen may provide another input method by including a sensor that detects linear reciprocating motion of the shaft.
  • the antenna may include an antenna structure (339) and/or an antenna embedded in a printed circuit board (332).
  • a side switch (334) may be provided on the printed circuit board (332).
  • a side button (337) provided in the digital pen is used to press the side switch (334) and may be exposed to the outside through a side opening (302) of the pen housing (300).
  • the side button (337) is supported by a support member (338), and when there is no external force acting on the side button (337), the support member (338) provides an elastic restoring force to restore or maintain the side button (337) in a state where it is placed at a certain position.
  • the circuit board portion (330) may include another packing ring, such as an O-ring.
  • an O-ring made of an elastic material may be placed on both ends of the base (331) to form a sealing structure between the base (331) and the pen housing (300).
  • the support member (338) may partially form a sealing structure by closely contacting the inner wall of the pen housing (300) around the side opening (302).
  • the circuit board portion (330) may also form a waterproof and dustproof structure similar to the packing ring (322) of the coil portion (320).
  • the digital pen may include a battery mounting portion (335) in which a battery (336) is placed on the upper surface of the base (331).
  • the battery (336) that may be mounted on the battery mounting portion (335) may include, for example, a cylinder type battery.
  • the digital pen may include a microphone (not shown).
  • the microphone may be directly connected to the printed circuit board (332) or may be connected to a separate flexible printed circuit board (FPCB) (not shown) connected to the printed circuit board (332).
  • FPCB flexible printed circuit board
  • the microphone may be positioned parallel to the side button (337) in the longitudinal direction of the digital pen.
  • FIG. 4 illustrates examples of digital pens according to various embodiments.
  • a digital pen (400) (e.g., digital pen (102) of FIG. 1, digital pen (200) of FIG. 2) may include a pen housing (401) (e.g., pen housing (300) of FIG. 3), a pen tip (402) (e.g., pen tip (321) of FIG. 3), a resonant circuit (403) (e.g., resonant circuit (240) of FIG. 2), a switch (404) (e.g., switch (230) of FIG. 2), a coil (405) (e.g., coil (220) of FIG. 2), and a power circuit (406) (e.g., power circuit (225) of FIG. 2).
  • a pen housing (401) e.g., pen housing (300) of FIG. 3
  • a pen tip (402) e.g., pen tip (321) of FIG. 3
  • a resonant circuit (403) e.g., resonant circuit (240) of FIG. 2
  • the pen housing (401) may have a pen shape and may have an accommodation space formed inside.
  • the resonant circuit (403), the switch (404), the coil (405), and the power circuit (406) may be accommodated in the accommodation space formed inside the pen housing (401).
  • the pen tip (402) may be positioned at an end of the pen housing (401). For example, a portion of the pen tip (402) may be exposed outside the pen housing (401), and the remainder of the pen tip (402) may be inserted inside the pen housing (401).
  • the resonant circuit (403) may include at least one electronic element, such as at least one coil, an inductor, or a capacitor.
  • the resonant circuit (403) may form a resonant frequency based on the electronic element included in the resonant circuit (403).
  • the resonant circuit (403) may include a common circuit and a plurality of additional circuits.
  • the resonant circuit (403) may form a resonant frequency based on the common circuit and an additional circuit connected to the common circuit among the plurality of additional circuits.
  • An additional circuit connected to the common circuit among the plurality of additional circuits and another additional circuit e.g., an additional circuit not connected to the common circuit
  • the resonant circuit (403) may form a resonant frequency among a plurality of candidate frequencies based on an additional circuit connected to the resonant circuit among the plurality of additional circuits.
  • the switch (404) can switch the connection between the common circuit and a plurality of additional circuits.
  • the switch (404) can connect at least one additional circuit among the plurality of additional circuits to the common circuit.
  • the coil (405) can generate a magnetic field using the current applied to the coil (405).
  • the magnetic field generated by the coil (405) can be used to operate the switch (404).
  • the switch (404) can connect a first additional circuit among the plurality of additional circuits to the common circuit. Based on a current flowing through the coil (405) that is greater than or equal to a threshold current size, the switch (404) can disconnect the first additional circuit from the common circuit and connect a second additional circuit among the plurality of additional circuits to the common circuit. Based on a cessation of the current flowing through the coil (405) that is greater than or equal to a threshold current size, the switch (404) can disconnect the common circuit from the second additional circuit and reconnect the common circuit to the first additional circuit.
  • FIGS. 5A, 5B, 6, 7A, and 7B The switching of connections between the common circuit and the plurality of additional circuits is described in more detail below in FIGS. 5A, 5B, 6, 7A, and 7B.
  • the power circuit (406) can supply power to the coil (405).
  • a digital pen may include a resonant circuit (not shown) (e.g., resonant circuit (240) of FIG. 2, resonant circuit (403) of FIG. 4), a coil (520) (e.g., coil (220) of FIG. 2, coil (405) of FIG. 4), a switch (530) (e.g., switch (230) of FIG. 24, switch (404) of FIG. 4), and a power circuit (540) (e.g., power circuit (225) of FIG. 2).
  • the resonant circuit may include a common circuit (511) (e.g., common circuit (241) of FIG. 2), a first additional circuit (512) (e.g., first additional circuit (242) of FIG. 2), and a second additional circuit (513) (e.g., second additional circuit (243) of FIG. 2).
  • a common circuit 511)
  • first additional circuit 512
  • second additional circuit 513
  • the power circuit (540) can apply a current determined by the processor to the coil (520).
  • the switch (530) can connect either the first additional circuit (512) or the second additional circuit (513) to the common circuit (511) based on the current flowing in the coil (520). For example, as shown in FIG. 5A, the switch (530) can connect the first additional circuit (512) among the plurality of additional circuits (e.g., the first additional circuit (512) and the second additional circuit (513)) to the common circuit (511) based on the current flowing in the coil (520) being less than or equal to a critical current size. As shown in FIG.
  • the switch (530) can disconnect the first additional circuit (512) and the common circuit (511) and connect the second additional circuit (513) among the plurality of additional circuits (e.g., the first additional circuit (512) and the second additional circuit (513)) to the common circuit (511).
  • the switch (530) can disconnect the common circuit (511) and the second additional circuit (513) and reconnect the common circuit (511) and the first additional circuit (512).
  • the switch (530) may include a first conductive wire (532), a second conductive wire (533), and a third conductive wire (534) accommodated within a sealing tube (531).
  • a first end (535) of the first conductive wire (532) may be connected to a common circuit (511).
  • a first end (536) of the second conductive wire (533) may be connected to a first additional circuit (512).
  • a first end (537) of the third conductive wire (534) may be connected to a second additional circuit (513).
  • a second end of the first conductive wire (532) may selectively form a contact (e.g., a contact (538) of FIG. 5A , a contact (539) of FIG.
  • the second end of the first conductive wire (532) can form a contact point (538) with the first additional circuit (512) among the plurality of additional circuits (e.g., the first additional circuit (512) and the second additional circuit (513)) based on the current flowing through the coil (520) below a critical current size.
  • the second end of the first conductive wire (532) can form a contact point (539) with the second additional circuit (513) among the plurality of additional circuits (e.g., the first additional circuit (512) and the second additional circuit (513)) based on the current flowing through the coil (520) above a critical current size.
  • FIG. 6 is a flowchart illustrating an example of a method of operating a digital pen according to various embodiments.
  • a digital pen may include a communication circuit (e.g., a communication circuit (205) of FIG. 4), a processor (e.g., a processor (210) of FIG. 4), a power circuit (e.g., a power circuit (225) of FIG. 4, a power circuit (540) of FIGS. 5A and 5B), a resonant circuit (e.g., a resonant circuit (403) of FIG. 3, a resonant circuit (240) of FIG.
  • a communication circuit e.g., a communication circuit (205) of FIG. 4
  • a processor e.g., a processor (210) of FIG. 4
  • a power circuit e.g., a power circuit (225) of FIG. 4, a power circuit (540) of FIGS. 5A and 5B
  • a resonant circuit e.g., a resonant circuit (403) of FIG. 3, a resonant circuit (240) of FIG.
  • a switch e.g., a switch (404) of FIG. 3, a switch (230) of FIG. 4, a switch (530) of FIGS. 5A and 5B
  • a coil e.g., a coil (405) of FIG. 3, a coil (220) of FIG. 4, a coil (520) of FIGS. 5A and 5B.
  • the processor may determine whether to receive available frequency information from an external device.
  • the switch may connect a first additional circuit (e.g., the first additional circuit (242) of FIG. 4, the first additional circuit (512) of FIGS. 5A and 5B) among a plurality of additional circuits (e.g., the first additional circuit (242) of FIG. 4, the first additional circuit (512) of FIGS. 5A and 5B)) to a common circuit (e.g., the first additional circuit (471) of FIG. 4, the common circuit (513) of FIGS. 5A and 5B) based on the fact that no available frequency information is received from an external device (e.g., the external device (101) of FIG. 1, the external device (101) of FIG. 2).
  • a first additional circuit e.g., the first additional circuit (242) of FIG. 4, the first additional circuit (512) of FIGS. 5A and 5B
  • a common circuit e.g., the first additional circuit (471) of FIG. 4, the common circuit (513) of FIGS. 5A and 5B
  • the communication circuit may not receive available frequency information from the external device.
  • the processor may determine to connect a first additional circuit among the plurality of additional circuits to the common circuit based on the fact that the available frequency information has not been received from the external device.
  • the processor may determine a current corresponding to the first additional circuit (e.g., a current less than or equal to a threshold current size) as the current to be applied to the coil.
  • the power circuit may apply the determined current to the coil.
  • the coil may generate a magnetic field based on the applied current.
  • the switch may connect the common circuit and the first additional circuit based on the magnetic field generated by the coil.
  • the switch may separate the first additional circuit and another additional circuit (e.g., a second additional circuit) from the common circuit based on the magnetic field generated by the coil.
  • a digital pen can cause a resonant circuit to form a resonant frequency by connecting one additional circuit among a common circuit and a plurality of additional circuits even when available frequency information is not received from an external device.
  • the digital pen can form a resonant frequency.
  • An external device supporting a first candidate frequency among a plurality of candidate frequencies supported by the digital pen may not support a function of transmitting the available frequency information to the digital pen.
  • the processor can determine whether the available frequency includes a resonant frequency based on the common circuit and the additional circuit connected to the common circuit.
  • the communication circuit can receive the available frequency information of the external device.
  • the processor can determine whether to operate the switch based on whether the received available frequency information of the external device includes a resonant frequency based on the common circuit and the additional circuit connected to the common circuit.
  • the switch can maintain a connection between the common circuit and the additional circuit connected to the common circuit based on the available frequency information of the external device including a resonant frequency based on the common circuit and the additional circuit connected to the common circuit.
  • FIGS. 7A and 7B are diagrams illustrating examples of switching between additional circuits connected to a common circuit according to the operation of a plurality of switches according to various embodiments.
  • a digital pen may include a communication circuit (not shown) (e.g., a communication circuit (205) of FIG. 4), a processor (not shown) (e.g., a processor (210) of FIG. 4), a resonant circuit (e.g., a resonant circuit (403) of FIG. 3, a resonant circuit (240) of FIG. 4), a plurality of coils (e.g., a first coil (721) and a second coil (722)), a plurality of switches (e.g., a first switch (731) and a second switch (732)), and a plurality of power circuits (e.g., a first power circuit (741) and a second power circuit (742)).
  • a communication circuit not shown
  • a processor not shown
  • a processor not shown
  • a resonant circuit e.g., a resonant circuit (403) of FIG. 3, a resonant circuit (240) of FIG. 4
  • the resonant circuit may include a common circuit (711), a first additional circuit (712), and a second additional circuit (713).
  • the plurality of coils may correspond to the plurality of switches. Each of the plurality of switches may be operated based on a magnetic field generated by a coil corresponding to the switch.
  • the first switch (731) may correspond to the first coil (721) and may be operated based on a magnetic field generated by the first coil (721).
  • the second switch (732) may correspond to the second coil (722) and may be operated based on a magnetic field generated by the second coil (722).
  • a plurality of power circuits may correspond to a plurality of coils. Each power circuit may apply current to a coil to which it corresponds. For example, a first power circuit (741) may apply current to a first coil (721). A second power circuit (742) may apply current to a second coil (722).
  • one power circuit corresponding to one coil.
  • one power circuit may correspond to two or more coils.
  • One power circuit may apply current to at least one coil among the coils to which the power circuit corresponds.
  • Each switch can connect and/or disconnect additional circuitry associated with that switch from the common circuit (711) based on the current flowing in the coil corresponding to that switch.
  • the processor can determine the current to be applied to each coil based on available frequency information received via the communication circuit.
  • the processor can select a resonant frequency from among a plurality of candidate frequencies.
  • the processor can determine the current to be applied to each coil based on the selected resonant frequency.
  • the processor may determine the current to be applied to the first coil (721) as a current exceeding the threshold current size and may determine the current to be applied to the second coil (722) as a current less than or equal to the threshold current size based on selecting the first candidate frequency corresponding to the first additional circuit (712) as the resonant frequency.
  • the first switch (731) may connect the common circuit (711) and the first additional circuit (712) based on the current exceeding the threshold current size flowing through the first coil (721).
  • the second switch (732) may separate the common circuit (711) and the second additional circuit (713) based on the current less than or equal to the threshold current size flowing through the second coil (722).
  • the processor may determine the current to be applied to the first coil (721) as a current less than or equal to a threshold current size, and may determine the current to be applied to the second coil (722) as a current exceeding the threshold current size, based on selecting the second candidate frequency corresponding to the second additional circuit (713) as the resonant frequency.
  • the first switch (731) may separate the common circuit (711) and the first additional circuit (712) based on the current less than or equal to the threshold current size flowing through the first coil (721).
  • the second switch (732) may connect the common circuit (711) and the second additional circuit (713) based on the current exceeding the threshold current size flowing through the second coil (722).
  • the first switch (731) may include a first conductive wire (735) and a second conductive wire (736) accommodated inside a first sealed tube (733).
  • a first end (735_1) of the first conductive wire (735) may be connected to a common circuit (711).
  • a first end (736_1) of the second conductive wire (736) may be connected to a first additional circuit (712).
  • the second switch (732) may include a third conductive wire (737) and a fourth conductive wire (738) accommodated inside a second sealed tube (734).
  • a first end (737_1) of the third conductive wire (737) may be connected to the common circuit (711).
  • a first end (738_1) of the fourth conductive wire (738) may be connected to a second additional circuit (713).
  • the second end of the first conductive wire (735) can form a contact point (e.g., contact point (739_1) of FIG. 7a) with the first additional circuit (712).
  • the common circuit (711) and the first additional circuit (712) can be connected.
  • the second end of the first conductive wire (735) does not form a contact point with the first additional circuit (712)
  • the common circuit (711) and the first additional circuit (712) can be separated.
  • the second end of the third conductive wire (737) can form a contact point (e.g., contact point (739_2) of FIG.
  • the second end of the first conductive wire (735) may form a contact point with the first additional circuit (712), and based on a current less than the threshold current size flowing in the second coil (722), the second end of the third conductive wire (737) may not form a contact point with the second additional circuit (713).
  • the second additional circuit (713 may not form a contact point with the second additional circuit (713).
  • the second end of the first conductive wire (735) may not form a contact point with the first additional circuit (712), and based on a current exceeding the threshold current size flowing in the second coil (722), the second end of the third conductive wire (737) may form a contact point with the second additional circuit (713).
  • the electronic devices according to various embodiments disclosed in this document may be devices of various forms.
  • the electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliance devices.
  • portable communication devices e.g., smartphones
  • computer devices portable multimedia devices
  • portable medical devices e.g., cameras
  • wearable devices e.g., smart watch devices
  • home appliance devices e.g., smartphones
  • the electronic devices according to embodiments of this document are not limited to the above-described devices.
  • first, second, or first or second may be used merely to distinguish one component from another, and do not limit the components in any other respect (e.g., importance or order).
  • a component e.g., a first component
  • another e.g., a second component
  • functionally e.g., a third component
  • module used in various embodiments of this document 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, for example.
  • a module may be an integrally configured component or a minimum unit of the component or a part thereof that performs one or more functions.
  • a module may be implemented in the form of an application-specific integrated circuit (ASIC).
  • ASIC application-specific integrated circuit
  • Various embodiments of the present document may be implemented as software (e.g., a program (140)) including one or more instructions stored in a storage medium (e.g., an internal memory (136) or an external memory (138)) readable by a machine (e.g., an external device).
  • a processor e.g., a processor (120)
  • the one or more instructions may include code generated by a compiler or code executable by an interpreter.
  • the machine-readable storage medium may be provided in the form of a non-transitory storage medium.
  • ‘non-transitory’ simply means that the storage medium is a tangible device and does not contain signals (e.g. electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently or temporarily on the storage medium.
  • the method according to various embodiments disclosed in the present document may be provided as included in a computer program product.
  • the computer program product may be traded between a seller and a buyer as a commodity.
  • the computer program product may be distributed in the form of a machine-readable storage medium (e.g., a compact disc read only memory (CD-ROM)), or may be distributed online (e.g., downloaded or uploaded) via an application store (e.g., Play StoreTM) or directly between two user devices (e.g., smart phones).
  • an application store e.g., Play StoreTM
  • at least a part of the computer program product may be temporarily stored or temporarily generated in a machine-readable storage medium, such as a memory of a manufacturer's server, a server of an application store, or an intermediary server.
  • each component e.g., a module or a program of the above-described components may include a single or multiple entities, and some of the multiple entities may be separately arranged in other components.
  • one or more components or operations of the above-described corresponding components may be omitted, or one or more other components or operations may be added.
  • the multiple components e.g., a module or a program
  • the integrated component may perform one or more functions of each of the multiple components identically or similarly to those performed by the corresponding component of the multiple components before the integration.
  • the operations performed by the 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, omitted, or one or more other operations may be added.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
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Abstract

Un stylo numérique selon un mode de réalisation peut comprendre une bobine pour générer un champ magnétique à l'aide d'un courant appliqué sur la base d'informations de fréquence disponibles concernant un dispositif externe. Le stylo numérique selon un mode de réalisation peut comprendre un commutateur qui fonctionne sur la base du champ magnétique généré pour commuter des connexions entre un circuit commun et une pluralité de circuits supplémentaires. Le stylo numérique selon un mode de réalisation peut comprendre un circuit résonant qui comprend le circuit commun et la pluralité de circuits supplémentaires et forme une fréquence de résonance sur la base du circuit commun et d'un circuit supplémentaire connecté au circuit commun par le commutateur parmi la pluralité de circuits supplémentaires.
PCT/KR2024/004531 2023-06-16 2024-04-05 Stylo numérique capable de commuter en fréquence Pending WO2024258017A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2023-0077333 2023-06-16
KR20230077333 2023-06-16
KR10-2023-0100482 2023-08-01
KR1020230100482A KR20240176740A (ko) 2023-06-16 2023-08-01 주파수 스위칭 가능한 디지털 펜

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WO2024258017A1 true WO2024258017A1 (fr) 2024-12-19

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WO (1) WO2024258017A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110074652A (ko) * 2009-12-25 2011-07-01 가부시키가이샤 와코무 지시체, 위치 검출 장치 및 위치 검출 방법
KR20150053172A (ko) * 2013-11-07 2015-05-15 삼성전자주식회사 전자기 유도를 이용하는 휠 회로 및 이를 구비하는 전자펜
US20190101995A1 (en) * 2016-06-24 2019-04-04 Wacom Co., Ltd. Transmitting type electronic pen and signal transmitting circuit thereof
KR20210034358A (ko) * 2019-09-20 2021-03-30 주식회사 하이딥 스타일러스 펜, 터치 장치, 및 터치 시스템
KR20230014899A (ko) * 2021-07-21 2023-01-31 삼성디스플레이 주식회사 인터페이스 장치 및 이를 이용한 인터페이스 장치 구동 방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110074652A (ko) * 2009-12-25 2011-07-01 가부시키가이샤 와코무 지시체, 위치 검출 장치 및 위치 검출 방법
KR20150053172A (ko) * 2013-11-07 2015-05-15 삼성전자주식회사 전자기 유도를 이용하는 휠 회로 및 이를 구비하는 전자펜
US20190101995A1 (en) * 2016-06-24 2019-04-04 Wacom Co., Ltd. Transmitting type electronic pen and signal transmitting circuit thereof
KR20210034358A (ko) * 2019-09-20 2021-03-30 주식회사 하이딥 스타일러스 펜, 터치 장치, 및 터치 시스템
KR20230014899A (ko) * 2021-07-21 2023-01-31 삼성디스플레이 주식회사 인터페이스 장치 및 이를 이용한 인터페이스 장치 구동 방법

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