Abstract: A signature verification method is disclosed. The method includes receiving signature data and fetching reference signature data associated with a user. The method includes enriching the received signature data by adding features that are created using differential geometry on each data point of the signature data. The method also includes synchronizing the enriched signature data with the reference signature data based on a first-predefined number of time-series parameters to form a set of aligned signatures. The method includes reducing dimensions of the formed set of aligned signatures based on a second-predefined number of time-series parameters. The method includes determining if the received signature data is genuine based on the set of aligned signatures with reduced dimensions by employing a neural network.

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 NFT (Non-Fungible Token) issuing method according to the present disclosure includes receiving a selection of a first artwork in which a watermark is embedded, authenticating, in reference to the watermark and information concerning a user who selects the first artwork, whether or not the user is an artist of the first artwork, and generating a first NFT indicating the first artwork when the authenticating succeeds. Embodiments of the present disclosure can prevent NFT conversion of a digital artwork by a person who does not have a legitimate right.

Abstract: A position indicator includes a pen-shaped body; control circuitry housed in the pen-shaped body and configured to generate position detection signals and generate additional information about the position indicator; a first receiver; a second receiver different from the first receiver; a first transmitter provided near a distal end of the pen-shaped body and configured to transmit the position detection signals to a sensor of a position detection system; and a second transmitter, which is different from the first transmitter and configured to transmit wireless signals to the position detection system. The control circuitry, in response to a control signal from the position detection system received by the first receiver or the second receiver, controls transmission of the position detection signals and transmission of the additional information via a transmitter selected from the first transmitter and the second transmitter, to the position detection system.

Abstract: A position detection method for detecting a position of an active pen using a sensor including a plurality of sensor electrodes. The method includes changing, according to a pen pressure value indicating pressure applied to a pen tip of the active pen, a number of the sensor electrodes used to detect the active pen; and detecting the position of the active pen by performing a scan using the number of the sensor electrodes of the sensor.

Abstract: A location detection device includes a sensor and a sensor controller arranged to overlap with the display device. The sensor includes detection electrodes configured to detect an alternating magnetic field. The controller, in operation, detects a location of an electromagnetic induction pen, based on a third alternating current generated by using both a first alternating current output from a first detection electrode located proximate one end of the plurality of detection electrodes in the first direction and a second alternating current output from a second detection electrode located on an opposite side of a center of the panel surface in the first direction from the first detection electrode. Noise derived from a gate line and superposed on the first alternating current of the first detection electrode is canceled by the noise derived from the gate line and superposed on the second alternating current of the second detection electrode.

Abstract: A creation-process visualization method includes obtaining, by at least one processor, content data indicating handwritten content generated using an electronic pen; calculating, by the at least one processor and based on the content data, feature information related to a creation process of the handwritten content; calculating, by the at least one processor, a feature value related to the creation process based on the feature information using a neural network trained on data sets representing motivation states during handwritten content creation; generating, by the at least one processor, display information based on the feature value, the display information including a degree of motivation of a user during the creation process; continuously updating, by the at least one processor, the display information in real time during the creation process; and displaying, on a display, the display information as updated in real time during the creation process.

Abstract: To provide a controller that can reduce a sense of discomfort felt by a user. A pen-type controller with a grip according to the present disclosure includes a pen part that is formed in a pen shape, a grip part that intersects an axial direction of the pen part, and a battery that is arranged in the grip part.

Abstract: Provided is a position input apparatus having a body portion and an extension portion. The body portion includes a body portion side surface with a thickness in a direction, and a screw hole provided on the body portion side surface, the extension portion includes a screw having a shaft provided with a screw thread corresponding to the screw hole and a head with a thickness in a center axis direction of the shaft, the screw is provided from inside of the extension portion such that the shaft protrudes outside from an extension portion side surface, and a head side surface of the screw is exposed to an upper surface side of the extension portion and is rotatable by a user, and the extension portion is attachable to the body portion by the screw being screwed to the screw hole on the body portion side surface.

Abstract: Provided is an electronic pen including a casing that has an opening portion at a front end, has a ring-shaped protruding portion protruding toward an axis from an inner wall surface in a vicinity of the opening portion, and is mounted with a circuit part, a core body including a pen tip portion and a shaft portion extending from a rear end surface of the pen tip portion, and a ring-shaped elastic member so provided as to be penetrated by the shaft portion in a part in which a front end surface of the protruding portion of the casing and the rear end surface of the pen tip portion of the core body are opposed to each other, the ring-shaped elastic member having an inclined side surface by having a small opening on a pen tip side and having a large opening on a rear end side.

Abstract: Provided is an electronic pen including a tubular housing having an opening at one end, a core body portion including a rod-shaped core body and a pressure member that holds a rear end of the core body and transmits a force applied to the core body, a writing pressure detector that detects a writing pressure applied to the core body, and a tubular holding member that accommodates and holds the core body portion. At least part of a side surface of the core body portion includes a flat surface portion parallel to an axial direction of the pen. An inner edge of the holding member has a cylindrical shape and at least part of the inner edge includes a protruding portion. With the core body portion mounted in the housing, the flat surface portion of the core body portion and the protruding portion of the holding member face each other.

Abstract: An active pen and a touch controller are configured to use a frame F including a plurality of temporally separated time slots TS0 to TSm to transmit and receive signals with each other. Each of the active pen and the touch controller can transmit and detect a reference signal for synchronizing a frame position, which is a temporal position of the frame F, and upon detecting the reference signal acquires the frame position based on the reference signal and operates according to the acquired frame position. The active pen is configured to transmit, when changing a master of the synchronization, a reference change signal CH indicating that the active pen itself is the master of the synchronization.

Abstract: An electronic pen is provided which indicates a position on a plane-shaped sensor through communication with an electronic device including the plane-shaped sensor. The electronic pen includes a reception circuit configured to receive a signal transmitted from the electronic device, a pen pressure sensor configured to output a detection signal correlated with an amount of pen pressure exerted on a pen tip of the electronic pen, and a value conversion circuit configured to convert, according to a conversion rule, a detection value indicated by the detection signal output from the pen pressure sensor, into a conversion value indicating a magnitude of the amount of pen pressure. The value conversion circuit adjusts, according to a strength of the signal received by the reception circuit, rising sensitivity at which the amount of pen pressure transitions from zero to non-zero on a conversion characteristic curve identified by the conversion rule.

Abstract: A method is carried out by a sensor controller for detecting an electromagnetic resonance stylus using an electromagnetic resonance sensor. The method includes, upon elapse of a predetermined period after the electromagnetic resonance sensor has stopped transmitting a feeder alternating magnetic field for feeding electric power to the electromagnetic resonance stylus, transmitting, from the electromagnetic resonance sensor, a cancelling alternating magnetic field that oscillates in a phase that cancels residual resonance in the electromagnetic resonance stylus.

Abstract: An electronic pen includes: a casing; a holding member disposed within the casing; an elastic member; an operating member configured to receive an operation input; a plurality of capacitive sensors; and at least one pressure sensor. The elastic member is disposed between the holding member and the operating member. The plurality of capacitive sensors overlap with the at least one pressure sensor, and the plurality of capacitive sensors and the at least one pressure sensor are disposed between the elastic member and the operating member.

Abstract: A stylus includes a first sensor configured to receive a first receive signal from a touch sensor of a device, and a second sensor configured to receive a second receive signal from the touch sensor of the device. The stylus includes an amplifier coupled to the first and second sensors and configured to produce a third signal by amplifying the difference between the first receive signal and the second receive signal. The stylus includes a controller configured to decode information encoded in the first receive signal and the second receive signal by processing the third signal.

Abstract: An electromagnetic induction pen of an electromagnetic induction system (EMR) system that can achieve a multilevel pen signal. The electromagnetic induction pen includes a resonance circuit that transmits a pen signal by using power obtained from an alternating magnetic field sent out by a position detecting device, and a control circuit that causes the resonance circuit to transmit the pen signal phase-modulated according to information to be transmitted to the position detecting device, by temporarily changing a resonance frequency of the resonance circuit from a first frequency to a second frequency different from the first frequency based on the information and then returning the resonance frequency of the resonance circuit 23 to the first frequency.

Abstract: A position detection device includes a main body with a housing that encloses an electronic pen while the electronic pen is accommodated in an accommodation portion included in the housing, and a planar coil having a rectangular cross-sectional area and disposed adjacent to the accommodation portion at a position at which a direction perpendicular to the rectangular cross-sectional area of the planar coil crosses an axial direction of the electronic pen while the electronic pen is accommodated in the accommodation portion.