Abstract: Disclosed is an electronic pen that includes a conductive core body, a power supply circuit, a first signal generation circuit which receives power from the power supply circuit and generates a first signal, and a second signal generation circuit which receives power from the power supply circuit and generates a second signal different from the first signal, and an operation switch which sets an operation mode of the electronic pen to either a first operation mode or a second operation mode. While the operation mode of the electronic pen is set to the first operation mode, the conductive core body transmits the first signal generated by the first signal generation circuit. While the operation mode of the electronic pen is set to the second operation mode, the conductive core body transmits the second signal generated by the second signal generation circuit.

Abstract: A pen-shaped position indicator is configured to capacitively couple with a sensor surface of a position detection apparatus. The indicator includes a pen-shaped body; a coil; a driving power production circuit configured to produce a DC voltage from an induced signal in the coil by a wireless interaction with a charging device; a signal production circuit connected to the driving power production circuit and configured to generate a signal based on the DC voltage to form a capacitive relationship between the pen-shaped body and the position detection apparatus; a first electrode; and a second electrode. The first and second electrodes are configured to form first and second capacitive relationships with the sensor surface, respectively, to generate detection signals in the sensor surface from which a first detection signal and a second detection signal distinguishable from each other are extracted and used to obtain angle information of the pen-shaped position indicator.

Abstract: An electronic pen includes a circuit board disposed such that an axial direction of a casing is aligned with a longitudinal direction of the circuit board, an electronic circuit on the circuit board, and a battery having a columnar shape disposed on a side of the circuit board opposite to a pen tip side of the circuit board inside a hollow portion of the casing such that positive and negative electrode conductors protruding from an end surface of the battery extend toward the circuit board. The battery is disposed such that a separation space is formed between the end surface and an end portion of the circuit board and such that tip portions of the positive and negative electrode conductors are in contact with the circuit board. The circuit board and the tip portions of the positive and negative electrode conductors are electrically connected to each other by soldered portions.

Abstract: A stylus includes a processor that acquires first coordinate values in a pen coordinate system at an occurrence position of a pen event detected by a pen sensor and acquires second coordinate values in a device coordinate system at the occurrence position of the pen event. The processor uses a plurality of sets of coordinate value pairs to determine conversion parameters for converting coordinates from the pen coordinate system into the device coordinate system and uses the determined conversion parameters and a measured amount of movement of the stylus to calculate coordinate values of the stylus in the device coordinate system.

Abstract: An electronic pen of a capacitive system includes a tubular pen casing, which houses an electronic circuit including a signal transmitting circuit that generates a signal to be supplied to a position detecting sensor and which houses a power storage device that provides a supply voltage to the electronic circuit and is chargeable. The electronic pen further includes a first conductor part and a second conductor part that are disposed to be exposed to outside to contactlessly form electric field coupling with power transmitting electrodes of a power transmitting part of an external charging device, to operate as power receiving electrodes. The electronic circuit includes a charging circuit that allows charging of the power storage device by being connected to the first conductor part and the second conductor part, and at least one of the first and second conductor parts is configured by part of the pen casing.

Abstract: Provided are a pen state detection circuit, a pen state detection system, and a pen state detection method that can improve estimation accuracy for a pen state in an electronic pen including at least one electrode. A pen state detection circuit acquires, from a touch sensor, a first signal distribution indicating a change in capacitance associated with approach of a first electrode and uses a machine learning estimator to estimate an instruction position or an inclination angle of an electronic pen from first feature values related to the first signal distribution. The first feature values include first local feature values related to a first local distribution corresponding to sensor electrodes in a number fewer than the number of arranged sensor electrodes exhibiting the first signal distribution.

Abstract: A sensor system, which detects a stylus and is provided in an electronic apparatus, includes a first integrated circuit, a second integrated circuit, and an integrated circuit connection line that couples the first integrated circuit and the second integrated circuit to each other. The first integrated circuit is connected to a first sensor electrode group, and detects a position of the stylus on a panel face of a first housing. The second integrated circuit is connected to a second sensor electrode group, and detects a position of the stylus on a panel face of a second housing. When the first integrated circuit detects a presence of the stylus, a notification indicative of the detection is issued to the second integrated circuit through the integrated circuit connection line such that transmission of an uplink signal through the second sensor electrode group by the second integrated circuit is stopped.

Abstract: Disclosed herein is a method executed by a device that is configured to be able to detect a pointed position of a stylus on an operation plane being superimposed on a displaying part. The method includes receiving feedback information relating to a display position of a predetermined pattern on the displaying part from a host processor, updating at least some of plural position calibration values stored in a correction table that stores therein the position calibration value for each of plural positions arranged on the operation plane, on a basis of the received feedback information, detecting a tentative pointed position of the stylus, reading the position calibration value that corresponds to the tentative pointed position from the correction table and deriving an output position by correcting the tentative pointed position on a basis of the position calibration value, and reporting the output position to the host processor.

Abstract: An information processing device includes a storage storing handwritten data generated according to handwritten input to a sheet-like recording medium, in a first file corresponding to a first page and a second file corresponding to a second page, and a controller which determines whether or not to couple (combine) the first and second files based on a first identification result identifying a region of the first page in which the handwritten data has been written or a region of the first page in which the handwritten data has not been written and a second identification result identifying a region of the second page in which the handwritten data has been written or a region of the second page in which the handwritten data has not been written. In response to a determination to couple the first and second files, the controller controls coupling of the first and second files.

Abstract: A position detection sensor allows for providing, on a back side of the position detection sensor, a component that needs to be accessed from a front side thereof. The position detection sensor includes a plurality of position detection electrodes arranged on an insulating substrate, wherein a region provided with the plurality of position detection electrodes forms an effective detection region for detecting an indicated position of a position indicator. A through hole in a predetermined shape is formed in the insulating substrate in the effective detection region. The position detection electrodes are arranged to bypass the through hole along the shape of the through hole at an area intersecting the through hole.

Abstract: A pen state detection circuit that is connected to a touch sensor of a capacitance type and adapted to detect a state of an electronic pen in accordance with an output signal from the touch sensor. The touch sensor includes sensor electrodes disposed in a planar manner, and the electronic pen includes a first electrode and a second electrode. The pen state detection circuit includes a processor configured to sequentially and repeatedly: acquire first and second coordinate values in a sensor coordinate system, the coordinate system being defined on a detection surface of the touch sensor, the first coordinate values indicating a projected position of the first electrode, the second coordinate values indicating a projected position of the second electrode; calculate an inclination value indicative of an inclination of the electronic pen from the acquired first and second coordinate values in accordance with calculation rules; and output the inclination value.

Abstract: An electronic pen cartridge is mounted on a mounting part disposed in a pen-shaped casing. The electronic pen cartridge includes an electronic pen main unit and a mounting adapter. The electronic pen main unit includes a first coupling part configured to connect the mounting adapter to the electronic pen main unit in an axial center direction. The mounting adapter includes a second coupling part connected to the first coupling part of the electronic pen main unit, a third coupling part connected to the mounting part of the casing, and an elastic component that causes an elastic force to act between the mounting adapter and the electronic pen main unit in a connected state in which the second coupling part is connected to the first coupling part of the electronic pen main unit.

Abstract: An electronic pen includes a casing, an opening portion formed on one side of the casing, a core body that projects outside of the casing through the opening portion, a pen module part, and a core body insertion member disposed in the casing and having a hollow space that houses the core body. The hollow space includes a hollow portion between an inner circumferential surface of the core body insertion member and an outer circumferential surface of the core body when the core body insertion member houses the core body, the hollow portion communicating, via the opening portion, with a first space external to the electronic pen. The hollow portion is separated from a second space in which the pen module part is disposed within the casing.

Abstract: Provided is an electronic pen with a cylindrical housing including an opening at an end portion of the housing on a pen tip side of the housing, a cylindrical member disposed in the housing and fixed to the housing at a part on the pen tip side of the housing, and a core body formed in a rod shape by a material containing a pigment, the core body including a body portion inserted into the cylindrical member through the opening of the housing and a pull-out portion configured to enable the core body to be pulled out of the housing. A diameter of the body portion of the core body inserted into the cylindrical member is larger than a difference between an outer diameter of the cylindrical member and an inner diameter of the cylindrical member.

Abstract: Disclosed herein is an electronic pen including a cylindrical casing, a first circuit assembly housed in the cylindrical casing, a second circuit assembly housed in the cylindrical casing, and a cable connected to the first circuit assembly and extending from the first circuit assembly toward the second circuit assembly. The cable includes a portion that is bent and folded back toward the first circuit assembly over the second circuit assembly and connected to the second circuit assembly. The portion of the cable that is bent and folded is housed in a housing space between the second circuit assembly and the casing when the first circuit assembly and the second circuit assembly are housed at a fixed position in the cylindrical casing.

Abstract: A coordinate input device including a coordinate sensor and a wireless communication circuit that wirelessly transmits coordinate data, etc. to an external electronic device is realized without affecting coordinate detection by the coordinate sensor and without impeding downsizing of the coordinate input device. A shield sheet (1C) is provided to cover the whole of a surface (back surface) of a sensor (1B) opposite to a sensor input surface (front surface) facing an electronic pen. A controller (200) that controls transmission of the coordinate data detected by the sensor (1B) to the external electronic device is disposed facing the sensor (1B) with the shield sheet (1C) disposed between the sensor and the controller, and a transmission antenna connected with the controller (200) is arranged outside a region covered with the shield sheet (1C).

Abstract: An artwork transaction method, an artwork transaction apparatus, and a program therefor are provided, which allow for secure transaction of artwork on a network using computers. The artwork transaction method includes using a computer to receive the artwork and biometric signature data. The artwork transaction method includes using the computer to issue, to a contract account on a blockchain network, an exhibition transaction that includes information used for identifying the artwork and includes the biometric signature data.