公开(公告)号：US11675463B2

公开(公告)日：2023-06-13

申请号：US17518310

申请日：2021-11-03

申请人： Wacom Co., Ltd.

发明人： Takeshi Koike ,  Haruhiko Hisano

IPC分类号： G06F3/041 ,  G06F3/044 ,  G06F3/0354 ,  G06F3/038

CPC分类号： G06F3/0441 ,  G06F3/0383 ,  G06F3/03545 ,  G06F3/041661 ,  G06F3/0445 ,  G06F3/0446

摘要： [Object] To allow a pen to properly receive an uplink signal even if there is dullness in a waveform of the uplink signal. [Solution] Provided is an invention of a method of transmitting transmission data from a sensor controller 31 that detects a pen 2 to a pen through a sensor electrode group 30. The pen 2 includes a pen tip electrode arranged near a pen tip, an analog circuit that detects edges of a signal led to the pen tip electrode, and a digital circuit that performs a correlation operation of an output signal of the analog circuit and known patterns to detect transmission data. The sensor controller 31 generates a pulse signal representing the transmission data and transmits the pulse signal, by using a main signal and a sub signal of the pulse signal so as to enhance the edges, thereby transmitting the transmission data through the sensor electrode group.

公开(公告)号：US20220075459A1

公开(公告)日：2022-03-10

申请号：US17527050

申请日：2021-11-15

申请人： Wacom Co., Ltd.

发明人： Takeshi Koike

IPC分类号： G06F3/038 ,  G06F3/0354

摘要： A pen includes: an electrode; a power supply circuit which, in operation, supplies a first voltage; a low voltage integrated circuit (LVIC) coupled to the power supply circuit, wherein the LVIC, in operation, outputs a transmission signal at the first voltage; a high voltage integrated circuit (HVIC) including a level shifter which, in operation, outputs the transmission signal at a second voltage that is higher than the first voltage; an inter-IC wire which, in operation, supplies the transmission signal having the first voltage from the LVIC to the HVIC; an electrode wire which, in operation, supplies the transmission signal having the second voltage from the HVIC to the electrode; and a step-up circuit coupled to the power supply circuit, wherein the HVIC in operation, supplies the second voltage to the level shifter.

公开(公告)号：US20210191592A1

公开(公告)日：2021-06-24

申请号：US17195235

申请日：2021-03-08

申请人： Wacom Co., Ltd.

发明人： Takeshi Koike ,  Hideyuki Hara

IPC分类号： G06F3/041 ,  G06F3/03 ,  G09G3/20 ,  G06F3/044 ,  G06F3/0354 ,  G06F3/038

摘要： A method in which a sensor controller is connected to a sensor having an electrode group provided together with a display panel configured to operate in during a variable refresh cycle among a plurality of refresh cycles, and an active stylus performs bidirectional communication with the sensor controller. According to the method, the sensor controller acquires a present refresh cycle among the plurality of refresh cycles of the display panel, generates an uplink signal, which serves as a reference for synchronization corresponding to the acquired present refresh cycle, and transmits the uplink signal to the active stylus, which is not detected as yet or is detected already, at the present refresh cycle.

公开(公告)号：US11327581B2

公开(公告)日：2022-05-10

申请号：US17229368

申请日：2021-04-13

申请人： Wacom Co., Ltd.

发明人： Masayuki Miyamoto ,  Takeshi Koike ,  Naoki Watanabe

IPC分类号： G06F3/0354 ,  G06F3/044 ,  G06F3/041 ,  G06F3/038

摘要： Active pen includes first and second electrodes provided at different positions, a transmission circuit that uses a booster circuit to cause a change in the first electrode to thereby transmit a downlink signal, a reception circuit that uses the second electrode to detect an uplink signal, and a stop filter that prevents a change in a potential of the first electrode from affecting a potential of the uplink signal detected by the reception circuit.

公开(公告)号：US11181996B2

公开(公告)日：2021-11-23

申请号：US16599065

申请日：2019-10-10

申请人： Wacom Co., Ltd.

发明人： Takeshi Koike

IPC分类号： G06F3/038 ,  G06F3/0354

摘要： A pen includes: an electrode; a power supply circuit which, in operation, supplies a first voltage; a low voltage integrated circuit (LVIC) coupled to the power supply circuit, wherein the LVIC, in operation, outputs a transmission signal at the first voltage; a high voltage integrated circuit (HVIC) including a level shifter which, in operation, outputs the transmission signal at a second voltage that is higher than the first voltage; an inter-IC wire which, in operation, supplies the transmission signal having the first voltage from the LVIC to the HVIC; an electrode wire which, in operation, supplies the transmission signal having the second voltage from the HVIC to the electrode; and a step-up circuit coupled to the power supply circuit, wherein the HVIC in operation, supplies the second voltage to the level shifter.

公开(公告)号：US10942598B2

公开(公告)日：2021-03-09

申请号：US16105496

申请日：2018-08-20

申请人： Wacom Co., Ltd.

发明人： Takeshi Koike ,  Hideyuki Hara

IPC分类号： G06F3/041 ,  G06F3/03 ,  G09G3/20 ,  G06F3/044 ,  G06F3/0354 ,  G06F3/038 ,  G09G3/36

摘要： A method in which a sensor controller is connected to a sensor having an electrode group provided together with a display panel configured to operate in during a variable refresh cycle among a plurality of refresh cycles, and an active stylus performs bidirectional communication with the sensor controller. According to the method, the sensor controller acquires a present refresh cycle among the plurality of refresh cycles of the display panel, generates an uplink signal, which serves as a reference for synchronization corresponding to the acquired present refresh cycle, and transmits the uplink signal to the active stylus, which is not detected as yet or is detected already, at the present refresh cycle.

公开(公告)号：US20180095495A1

公开(公告)日：2018-04-05

申请号：US15832318

申请日：2017-12-05

申请人： Wacom Co., Ltd.

发明人： Yuji Katsurahira ,  Takeshi Koike ,  Hideyuki Hara

IPC分类号： G06F1/12 ,  G06F1/24 ,  G06F3/0354 ,  G06F3/038 ,  G06F3/041 ,  G06F3/044

CPC分类号： G06F1/12 ,  G06F1/24 ,  G06F3/03545 ,  G06F3/0383 ,  G06F3/0416 ,  G06F3/044

摘要： A low-power-consumption, noise-immune analog circuit for a position indicator is provided. The analog circuit provided by the present disclosure is connected to an electrode that receives a control signal by capacitive coupling, and includes an edge detection circuit and a waveform restoration circuit. The edge detection circuit detects rising and falling edges of the control signal received by the electrode. The waveform restoration circuit restores the waveform of the control signal in accordance with the rising and falling edges detected by the edge detection circuit.

公开(公告)号：US11899861B2

公开(公告)日：2024-02-13

申请号：US17527050

申请日：2021-11-15

申请人： Wacom Co., Ltd.

发明人： Takeshi Koike

IPC分类号： G06F3/038 ,  G06F3/0354

CPC分类号： G06F3/0383 ,  G06F3/03545 ,  G06F2203/0384

摘要： A pen includes: an electrode; a power supply circuit which, in operation, supplies a first voltage; a low voltage integrated circuit (LVIC) coupled to the power supply circuit, wherein the LVIC, in operation, outputs a transmission signal at the first voltage; a high voltage integrated circuit (HVIC) including a level shifter which, in operation, outputs the transmission signal at a second voltage that is higher than the first voltage; an inter-IC wire which, in operation, supplies the transmission signal having the first voltage from the LVIC to the HVIC; an electrode wire which, in operation, supplies the transmission signal having the second voltage from the HVIC to the electrode; and a step-up circuit coupled to the power supply circuit, wherein the HVIC in operation, supplies the second voltage to the level shifter.

公开(公告)号：US20230127561A1

公开(公告)日：2023-04-27

申请号：US18068009

申请日：2022-12-19

申请人： Wacom Co., Ltd.

发明人： Takeshi Koike ,  Hideyuki Hara

IPC分类号： G06F3/041 ,  G06F3/03 ,  G09G3/20 ,  G06F3/044 ,  G06F3/0354 ,  G06F3/038

摘要： A method in which a sensor controller is connected to a sensor having an electrode group provided together with a display panel configured to operate in during a variable refresh cycle among a plurality of refresh cycles, and an active stylus performs bidirectional communication with the sensor controller. According to the method, the sensor controller acquires a present refresh cycle among the plurality of refresh cycles of the display panel, generates an uplink signal, which serves as a reference for synchronization corresponding to the acquired present refresh cycle, and transmits the uplink signal to the active stylus, which is not detected as yet or is detected already, at the present refresh cycle.

公开(公告)号：US20220291797A1

公开(公告)日：2022-09-15

申请号：US17828367

申请日：2022-05-31

申请人： Wacom Co., Ltd.

发明人： Takeshi Koike ,  Hideyuki Hara

IPC分类号： G06F3/041 ,  G06F3/03 ,  G09G3/20 ,  G06F3/044 ,  G06F3/0354 ,  G06F3/038

摘要： A method in which a sensor controller is connected to a sensor having an electrode group provided together with a display panel configured to operate in during a variable refresh cycle among a plurality of refresh cycles, and an active stylus performs bidirectional communication with the sensor controller. According to the method, the sensor controller acquires a present refresh cycle among the plurality of refresh cycles of the display panel, generates an uplink signal, which serves as a reference for synchronization corresponding to the acquired present refresh cycle, and transmits the uplink signal to the active stylus, which is not detected as yet or is detected already, at the present refresh cycle.