Patents by Inventor Masamitsu Ito
Masamitsu Ito has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20220300092Abstract: An electronic erasing device includes a casing, an erasing portion slidably attached to the casing and having a bottom surface and a side surface that extends from an outer edge of the bottom surface, both the bottom surface and at least a part of the side surface protruding from an end of the casing, and a position indicator including a core body and a pressure detector that detects a pressure applied to the core body, the position indicator outputting a position indication signal indicating an erasure position indicated by the core body and information indicating the pressure. The position indicator is included in the erasing portion and fixed inside the casing such that a tip portion of the core body is positioned away from an outer side of the bottom surface of the erasing portion and the applied pressure is transmitted to the core body.Type: ApplicationFiled: June 7, 2022Publication date: September 22, 2022Inventors: Ryoji Kamiyama, Toshihiko Horie, Masamitsu Ito, Shigeru Yamashita, Fujii Kosuke
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Publication number: 20220291021Abstract: The present disclosure is directed to a position detection sensor of an electromagnetic induction type connected to a position detection circuitry. The position detection sensor includes a circular substrate, a plurality of first loop coils arranged in a first direction on the circular substrate, and a plurality of second loop coils arranged in a second direction on the circular substrate, the second direction intersecting the first direction. Each of the plurality of first loop coils includes a straight portion extending in the second direction and a circumferential portion disposed along an outer edge of the circular substrate, and each of the plurality of second loop coils includes a straight portion extending in the first direction and a circumferential portion disposed along the outer edge of the circular substrate.Type: ApplicationFiled: January 25, 2022Publication date: September 15, 2022Inventors: Hikaru MATSUURA, Takeru IZUMISAWA, Masamitsu ITO
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Publication number: 20220283650Abstract: A method is provided for adjusting the resonance frequency of a resonance circuit included in an electronic pen. The method uses adjusting means for adjusting the capacitance of an internal capacitor array and measuring means for measuring an alternating magnetic field generated by the resonance circuit. The method includes (1) a step of changing the state of a predetermined portion of multiple capacitive elements constituting the internal capacitor array, and (2) a step of changing, according to reference resonance frequency variations of the resonance circuit before and after the state change, the state of a portion or all of at least one capacitive element constituting the inner capacitor array other than said predetermined portion of the capacitive elements.Type: ApplicationFiled: May 25, 2022Publication date: September 8, 2022Inventors: Shigeru YAMASHITA, Masamitsu ITO, Toshihiko HORIE
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Publication number: 20220253152Abstract: An integrated circuit includes a first terminal that is connected to a first end of a first capacitor, the first capacitor being included in a resonant circuit, a second terminal that is connected to a second end of the first capacitor, a plurality of second capacitors connected in parallel between the first and second terminals, and a control circuit which, in operation, changes a capacitance of each of the second capacitors. An electronic pen includes the integrated circuit and a first capacitor having a capacitance that varies based on pressure applied to a nib of the electronic pen.Type: ApplicationFiled: April 28, 2022Publication date: August 11, 2022Inventors: Shigeru Yamashita, Toshihiko Horie, Masamitsu Ito
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Patent number: 11385725Abstract: An electronic erasing device includes a casing, an erasing portion slidably attached to the casing and having a bottom surface and a side surface that extends from an outer edge of the bottom surface, both the bottom surface and at least a part of the side surface protruding from an end of the casing, and a position indicator including a core body and a pressure detector that detects a pressure applied to the core body, the position indicator outputting a position indication signal indicating an erasure position indicated by the core body and information indicating the pressure. The position indicator is included in the erasing portion and fixed inside the casing such that a tip portion of the core body is positioned away from an outer side of the bottom surface of the erasing portion and the applied pressure is transmitted to the core body.Type: GrantFiled: April 28, 2021Date of Patent: July 12, 2022Assignee: Wacom Co., Ltd.Inventors: Ryoji Kamiyama, Toshihiko Horie, Masamitsu Ito, Shigeru Yamashita, Fujii Kosuke
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Patent number: 11360584Abstract: A work step of electrical connection between a writing pressure detector and a circuit element of a circuit is reduced. An electronic pen includes a writing pressure detector that detects a pressure applied to a core body disposed on one end side of a tubular chassis in the axial center direction, a circuit board for which a flexible substrate formed into a shape allowed to extend in the axial center direction is used in the chassis, and a holder housed in the chassis in such a manner as to hold the writing pressure detector and the circuit board and extend in the axial center direction. In the circuit board, a writing pressure detector placement part, a circuit placement part at which a predetermined circuit is formed, and a line part at which a line pattern that electrically connects a component of the writing pressure detector placed on the writing pressure detector placement part and a circuit element of the circuit placement part is formed are formed to line up in the axial center direction.Type: GrantFiled: September 29, 2021Date of Patent: June 14, 2022Assignee: Wacom Co., Ltd.Inventors: Shigeru Yamashita, Ryoji Kamiyama, Masamitsu Ito
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Patent number: 11327584Abstract: An integrated circuit includes a first terminal that is connected to a first end of a first capacitor, the first capacitor being included in a resonant circuit, a second terminal that is connected to a second end of the first capacitor, a plurality of second capacitors connected in parallel between the first and second terminals, and a control circuit which, in operation, changes a capacitance of each of the second capacitors. An electronic pen includes the integrated circuit and a first capacitor having a capacitance that varies based on pressure applied to a nib of the electronic pen.Type: GrantFiled: December 11, 2020Date of Patent: May 10, 2022Assignee: Wacom Co., Ltd.Inventors: Shigeru Yamashita, Toshihiko Horie, Masamitsu Ito
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Publication number: 20220050536Abstract: Provided is an electronic pen core body including a tip component portion coupled to an axis component portion. At least one end of the axis component portion in an axial direction is made of a material that is harder than a material from which the tip component portion is made. The axis component portion includes a recessed hole and a fitting portion directly or indirectly fitted to a pen pressure detector. The tip component portion includes a tip portion protruding from the one end of the axis component portion in the axial direction, a coupling core portion disposed within the recessed hole and coupled to an inner wall surface of the recessed hole of the axis component portion, and a second ring-shaped end surface that contacts a first ring-shaped end surface of the axis component portion. The first ring-shaped end surface is covered by the second ring-shaped end surface.Type: ApplicationFiled: October 28, 2021Publication date: February 17, 2022Inventors: Ryoji KAMIYAMA, Toshihiko HORIE, Masamitsu ITO, Daisuke WATANABE
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Publication number: 20220019300Abstract: A work step of electrical connection between a writing pressure detector and a circuit element of a circuit is reduced. An electronic pen includes a writing pressure detector that detects a pressure applied to a core body disposed on one end side of a tubular chassis in the axial center direction, a circuit board for which a flexible substrate formed into a shape allowed to extend in the axial center direction is used in the chassis, and a holder housed in the chassis in such a manner as to hold the writing pressure detector and the circuit board and extend in the axial center direction. In the circuit board, a writing pressure detector placement part, a circuit placement part at which a predetermined circuit is formed, and a line part at which a line pattern that electrically connects a component of the writing pressure detector placed on the writing pressure detector placement part and a circuit element of the circuit placement part is formed are formed to line up in the axial center direction.Type: ApplicationFiled: September 29, 2021Publication date: January 20, 2022Inventors: Shigeru Yamashita, Ryoji Kamiyama, Masamitsu Ito
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Patent number: 11169625Abstract: A work step of electrical connection between a writing pressure detector and a circuit element of a circuit is reduced. An electronic pen includes a writing pressure detector that detects a pressure applied to a core body disposed on one end side of a tubular chassis in the axial center direction, a circuit board for which a flexible substrate formed into a shape allowed to extend in the axial center direction is used in the chassis, and a holder housed in the chassis in such a manner as to hold the writing pressure detector and the circuit board and extend in the axial center direction. In the circuit board, a writing pressure detector placement part, a circuit placement part at which a predetermined circuit is formed, and a line part at which a line pattern that electrically connects a component of the writing pressure detector placed on the writing pressure detector placement part and a circuit element of the circuit placement part is formed are formed to line up in the axial center direction.Type: GrantFiled: August 17, 2020Date of Patent: November 9, 2021Assignee: WACOM CO., LTD.Inventors: Shigeru Yamashita, Ryoji Kamiyama, Masamitsu Ito
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Publication number: 20210294493Abstract: A position detection apparatus includes a sensor, and a controller that detects a position of a first position indicator and a position of a second position indicator through the sensor. The controller continues detecting the position of the first position indicator and halts detecting the position of the second position indicator after a state in which the positions of the first position indicator and the second position indicator are not detected changes to a state in which the position of the first position indicator is detected, and continues both detecting the position of the second position indicator and detecting the position of the first position indicator after the state in which the positions of the first position indicator and the second position indicator are not detected changes to a state in which the position of the second position indicator is detected.Type: ApplicationFiled: June 9, 2021Publication date: September 23, 2021Inventors: Tomo Asakura, Masamitsu Ito
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Publication number: 20210247851Abstract: An electronic erasing device includes a casing, an erasing portion slidably attached to the casing and having a bottom surface and a side surface that extends from an outer edge of the bottom surface, both the bottom surface and at least a part of the side surface protruding from an end of the casing, and a position indicator including a core body and a pressure detector that detects a pressure applied to the core body, the position indicator outputting a position indication signal indicating an erasure position indicated by the core body and information indicating the pressure. The position indicator is included in the erasing portion and fixed inside the casing such that a tip portion of the core body is positioned away from an outer side of the bottom surface of the erasing portion and the applied pressure is transmitted to the core body.Type: ApplicationFiled: April 28, 2021Publication date: August 12, 2021Inventors: Ryoji Kamiyama, Toshihiko Horie, Masamitsu Ito, Shigeru Yamashita, Fujii Kosuke
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Patent number: 11084069Abstract: According to one embodiment, a chuck cleaner includes a support, an adhesive layer, and a support substrate. The support includes a first portion, a second portion, and a third portion provided between the first portion and the second portion. The support substrate is provided between the support and the adhesive layer. The support substrate includes a first region fixed to the first portion, a second region fixed to the second portion, a third region provided between the first region and the second region and having variable distance from the third portion, a fourth region provided between the first region and the third region and separated from the support, and a fifth region provided between the second region and the third region and separated from the support.Type: GrantFiled: November 13, 2018Date of Patent: August 10, 2021Assignee: KIOXIA CORPORATIONInventors: Yoshihito Kobayashi, Masamitsu Ito
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Publication number: 20210096661Abstract: An integrated circuit includes a first terminal that is connected to a first end of a first capacitor, the first capacitor being included in a resonant circuit, a second terminal that is connected to a second end of the first capacitor, a plurality of second capacitors connected in parallel between the first and second terminals, and a control circuit which, in operation, changes a capacitance of each of the second capacitors. An electronic pen includes the integrated circuit and a first capacitor having a capacitance that varies based on pressure applied to a nib of the electronic pen.Type: ApplicationFiled: December 11, 2020Publication date: April 1, 2021Inventors: Shigeru Yamashita, Toshihiko Horie, Masamitsu Ito
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Patent number: 10866657Abstract: An integrated circuit includes a first terminal that is connected to a first end of a first capacitor, the first capacitor being included in a resonant circuit together with a coil, a second terminal that is connected to a second end of the first capacitor, a plurality of second capacitors connected in parallel between the first and second terminals, and a control circuit which, in operation, changes a capacitance of each of the second capacitors. An electronic pen includes the integrated circuit and a resonant circuit, in which the first capacitor includes a variable-capacitance capacitor which, in operation, varies a capacitance of the variable-capacitance capacitor in accordance with pressure applied to a nib of the electronic pen.Type: GrantFiled: June 12, 2019Date of Patent: December 15, 2020Assignee: Wacom Co., Ltd.Inventors: Shigeru Yamashita, Toshihiko Horie, Masamitsu Ito
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Publication number: 20200379584Abstract: An electronic pen cartridge includes a pen tip that is configured to protrude outside of an electronic pen electronic pen casing through an opening of the electronic pen casing, an electronic circuit that transfers signals to a position detecting sensor, and a first connector that is joined to a second connector disposed in the electronic pen casing. The first connector includes plural terminals insulated from each other, and each of the terminals is electrically connected to the electronic circuit. The first connector and the second connector are joined through insertion of a fitting protrusion of a first one of the first connector and the second connector into a fitting recess of a second one of the first connector and the second connector in an axis center direction of the electronic pen casing, and circular annular conductor contacts are included in the first connector or the second connector.Type: ApplicationFiled: August 19, 2020Publication date: December 3, 2020Inventors: Masamitsu Ito, Hidetaka Takiguchi
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Patent number: D946576Type: GrantFiled: October 21, 2020Date of Patent: March 22, 2022Assignee: Wacom Co., Ltd.Inventors: Ryoji Kamiyama, Masamitsu Ito, Toshihiko Horie
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Patent number: D947192Type: GrantFiled: October 21, 2020Date of Patent: March 29, 2022Assignee: Wacom Co., Ltd.Inventors: Ryoji Kamiyama, Masamitsu Ito, Toshihiko Horie
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Patent number: D966268Type: GrantFiled: October 21, 2020Date of Patent: October 11, 2022Assignee: Wacom Co., Ltd.Inventors: Ryoji Kamiyama, Masamitsu Ito, Toshihiko Horie
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Patent number: D968408Type: GrantFiled: May 16, 2022Date of Patent: November 1, 2022Assignee: Wacom Co., Ltd.Inventors: Ryoji Kamiyama, Masamitsu Ito, Toshihiko Horie