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公开(公告)号：US11313661B2
公开(公告)日：2022-04-26
申请号：US17110968
申请日：2020-12-03
Inventor： Chung-Wen Hsu
Abstract: An electromagnetic induction type coordinate positioning apparatus includes a first induction coil, a second induction coil, a first amplification circuit, a second amplification circuit, and a control circuit. The first induction coil and the second induction coil respectively generate a first induction signal and a second induction signal when a pointer device comes close. The first amplification circuit and the second amplification circuit may be electrically connected to the first induction coil and the second induction coil, to receive the first induction signal and the second induction signal. The control circuit controls the first amplification circuit and the second amplification circuit to amplify the first induction signal and the second induction signal, so that a power level of the amplified first induction signal and a power level of the amplified second induction signal reach a first predefined level and a second predefined level.
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公开(公告)号：US11221721B2
公开(公告)日：2022-01-11
申请号：US17111092
申请日：2020-12-03
Inventor： Chung-Wen Hsu
Abstract: An electromagnetic induction type coordinate positioning apparatus includes a first induction coil, a second induction coil, a first impedance circuit, a second impedance circuit, and a control circuit. The first induction coil and the first impedance circuit form a first excited current signal and the second induction coil and the second impedance circuit form a second excited current signal. The control circuit controls a first impedance value of the first induction coil to conform to a first predefined value and controls a second impedance value of the second induction coil to conform to a second predefined value, so that a first excited current signal reaching a first predefined level is formed on a current path between the first impedance circuit and the first induction coil, and a second excited current signal reaching a second predefined level is formed on a current path between the second impedance circuit and the second induction coil.
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公开(公告)号：US20210342022A1
公开(公告)日：2021-11-04
申请号：US17065867
申请日：2020-10-08
Inventor： Chung-Wen HSU
IPC: G06F3/0354 , G06F3/041
Abstract: A pointer device is provided. The pointer device includes an induction coil, a clock generating circuit, and a control circuit. The induction coil converts magnetic energy into electrical potential energy and stores the electrical potential energy in a power storage period, and receives an instruction signal from the electromagnetic coordinate positioning apparatus in an instruction receiving period. The control circuit decodes the instruction signal in the instruction receiving period according to the clock signal after the power storage period. When determining that the instruction signal is one of a plurality of predefined instructions, the control circuit triggers, in a data transmission period, the induction coil to send a data signal corresponding to the instruction signal to the electromagnetic coordinate positioning apparatus according to the clock signal after the instruction receiving period. The instruction signal and the data signal each include a fixed quantity of bits.
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公开(公告)号：US20210294440A1
公开(公告)日：2021-09-23
申请号：US17116981
申请日：2020-12-09
Inventor： Chung-Wen HSU
IPC: G06F3/0354 , G06F3/046 , H02J50/10 , H02J50/90
Abstract: An electromagnetic induction type coordinate positioning apparatus is provided. The apparatus includes a first induction coil, a second induction coil, a trigger circuit, and a control circuit. The first induction coil is flowed through a first current signal, and the first induction coil is configured to sense a pointer device when the electromagnetic induction type coordinate positioning apparatus is in a sleep mode, and generate a first induction signal when detecting the pointer device. The second induction coil is flowed through a second current signal, and the first induction coil is configured to sense and communicate with the pointer device when in an operating mode. The trigger circuit sends an interrupt signal according to the first induction signal. The control circuit interrupts the sleep mode according to the interrupt signal and switches to the operating mode. The control circuit in the operating mode controls the second control signal to flow through the second induction coil.
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公开(公告)号：US20200050295A1
公开(公告)日：2020-02-13
申请号：US16373038
申请日：2019-04-02
Inventor： Chung-Wen HSU , Chung-Hsuan LI
IPC: G06F3/0354 , G06F3/041 , G06F3/0346
Abstract: An automatic pencil type pointer includes a housing, a first circuit unit, a lead propelling unit, and a first electromagnetic unit. The housing has a port and an accommodation space in communication with the port. The first circuit unit is disposed in the accommodation space. The lead propelling unit is disposed in the accommodation space and includes a lead storage tube, a tip sleeve, a graphite lead, and a lead propelling assembly. The tip sleeve is disposed at the port. The graphite lead is accommodated in the lead storage tube. The lead propelling assembly is capable of controlling the graphite lead to be output from the tip sleeve. The first electromagnetic unit includes a first magnet and a first coil. The first coil is wound around the first magnet and is electrically connected to the first circuit unit. The graphite lead passes through the first magnet.
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Patent Agency Ranking
公开(公告)号：US20200050293A1
公开(公告)日：2020-02-13
申请号：US16359415
申请日：2019-03-20
Inventor： Chung-Wen HSU , Chung-Hsuan LI
IPC: G06F3/0354 , G01L5/00 , G01L1/00
Abstract: A pressure sensing pointer includes a housing, an electromagnetic unit, a cartridge, a pressing member, a first elastic member, a second elastic member, and a pressure sensing element. The housing has an accommodating space and a port in communication with the accommodating space. The electromagnetic unit is located inside the accommodating space. The cartridge is movably disposed at the port along an axial direction. The pressing member is movably disposed in the accommodating space, and is in linkage connection to the cartridge. One end of the first elastic member is fixed on the pressing member. One end of the second elastic member abuts against the pressing member An amount of compression deformation of the second elastic member in the axial direction is greater than an amount of compression deformation of the first elastic member in the axial direction. The pressure sensing element faces toward the first elastic member.
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公开(公告)号：US11249566B2
公开(公告)日：2022-02-15
申请号：US17065867
申请日：2020-10-08
Inventor： Chung-Wen Hsu
IPC: G06F3/0354 , G06F3/041
Abstract: A pointer device is provided. The pointer device includes an induction coil, a clock generating circuit, and a control circuit. The induction coil converts magnetic energy into electrical potential energy and stores the electrical potential energy in a power storage period, and receives an instruction signal from the electromagnetic coordinate positioning apparatus in an instruction receiving period. The control circuit decodes the instruction signal in the instruction receiving period according to the clock signal after the power storage period. When determining that the instruction signal is one of a plurality of predefined instructions, the control circuit triggers, in a data transmission period, the induction coil to send a data signal corresponding to the instruction signal to the electromagnetic coordinate positioning apparatus according to the clock signal after the instruction receiving period. The instruction signal and the data signal each include a fixed quantity of bits.
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公开(公告)号：US10691229B2
公开(公告)日：2020-06-23
申请号：US15981551
申请日：2018-05-16
Inventor： Chung-Wen Hsu , Chung-Hsuan Li
IPC: G06F3/0354
Abstract: A pointer includes a casing, a first electromagnetic unit, a second electromagnetic unit, a first elastic member, and a pen point. The casing has an accommodation space and a port in communication with the accommodation space. The first electromagnetic unit includes a first magnet and a coil winding around the first magnet. The first magnet is fixedly disposed in the accommodation space. The second electromagnetic unit is movably disposed in the accommodation space along an axial direction, where the second electromagnetic unit includes a second magnet and a protection member wrapping the second magnet, and the second magnet is relatively away from or close to the first magnet. The elastic member is disposed in the casing and can provide an elastic force to the second electromagnetic unit along the axial direction. The pen point is movably disposed at the port and connected to the protection member.
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公开(公告)号：US11144169B2
公开(公告)日：2021-10-12
申请号：US17182986
申请日：2021-02-23
Inventor： Chung-Wen Hsu
IPC: G06F3/046 , G06F3/038 , G06F3/0354
Abstract: An electromagnetic induction type coordinate positioning apparatus includes a first induction coil, a second induction coil, a first signal processing circuit, a second signal processing circuit, and a control circuit. The first induction coil and the second induction coil respectively generate a first induction signal and a second induction signal when a pointer device comes close. The first signal processing circuit performs a first signal processing procedure on one of the first induction signal and the second induction signal. The second signal processing circuit performs a second signal processing procedure on the other one of the first induction signal and the second induction signal. The control circuit calculates position information of the pointer device according to the first induction signal and the second induction signal that have been respectively processed by the first signal processing procedure and the second signal processing procedure.
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公开(公告)号：US20210278916A1
公开(公告)日：2021-09-09
申请号：US17182986
申请日：2021-02-23
Inventor： Chung-Wen HSU
IPC: G06F3/046 , G06F3/0354 , G06F3/038
Abstract: An electromagnetic induction type coordinate positioning apparatus includes a first induction coil, a second induction coil, a first signal processing circuit, a second signal processing circuit, and a control circuit. The first induction coil and the second induction coil respectively generate a first induction signal and a second induction signal when a pointer device comes close. The first signal processing circuit performs a first signal processing procedure on one of the first induction signal and the second induction signal. The second signal processing circuit performs a second signal processing procedure on the other one of the first induction signal and the second induction signal. The control circuit calculates position information of the pointer device according to the first induction signal and the second induction signal that have been respectively processed by the first signal processing procedure and the second signal processing procedure.
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