Abstract: A touch panel sequentially comprising: a first electrode layer, which comprises multiple first electrodes in parallel to a first axis; an elastic dielectric layer; and a second structure, which further comprises: multiple second circuits in parallel to the first axis; multiple third circuits in parallel to a second axis; multiple second electrodes; and multiple switch circuits, wherein that each of the switch circuits is coupled to one of the second electrodes and one of the second circuits, wherein that each of the switch circuits is configured to be selectively closed or opened according to signals transmitted from one of the third circuits, wherein each of the first electrodes covers on top of one of the second circuits and the switch circuits and the second electrodes which are coupled to the one of the second circuits.

Abstract: A display device includes pixels arranged in rows and columns, a scan driver, and a read-out circuit, wherein the read-out circuit is configured to read-out electrical properties of a pixel through the read-out line. The first pixel includes a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a seventh transistor, an eighth transistor, a ninth transistor, a first organic light-emitting diode connected between a second electrode of the seventh transistor and a ground node to which a ground voltage is applied, a second organic light-emitting diode between the second electrode of the eighth transistor and the ground node, and a third organic light-emitting diode connected between the second electrode of the ninth transistor and the ground node.

Abstract: A stylus control circuit used to control a stylus includes a positioning signal generator. The positioning signal generator is used to generate a first positioning signal having a first frequency and transmit the first positioning signal to the stylus through a first positioning transmission electrode. Wherein, the first frequency corresponds to a position of the first positioning transmission electrode, and the first positioning signal is a frequency signal without carrying any digital data.

Abstract: An electronic device that includes: an operation panel having an upper main surface and a lower main surface; a buffer member that has an upper main surface and a lower main surface, and is fixed to the lower main surface of the operation panel; a plate-shaped member that has an upper main surface and a lower main surface, and is fixed to the lower main surface of the buffer member; and a sensor that is fixed to the lower main surface of the plate-shaped member and detects deformation of the operation panel. A value of a product of a Young's modulus of the plate-shaped member and a cube of a thickness of the plate-shaped member is 1.6×10?3 N·m to 1.6 N·m.

Abstract: A touch display device, including a display panel including: a plurality of source lines configured to provide a plurality of source signals to a plurality of pixels, and a common electrode coupled to the plurality of source lines; a plurality of touch electrodes coupled to the common electrode, and configured to provide a plurality of touch signals according to a plurality of touch driving signals received from the common electrode; and a touch driving circuit configured to generate a plurality of pieces of touch information based on a difference between the plurality of touch signals and each of the plurality of touch driving signals.

Abstract: A digital trajectory prediction system includes a preprocess unit serving to receive an input trajectory from an input device for preforming a preprocessing on the input trajectory to form a processed trajectory. A neural network prediction model serves to receive the processed trajectory and to output a prediction result including a predicted point. A post-processing unit serves to perform a post-processing on the prediction result for determining whether to add the predicted point to a render point set. A point output unit serves for rendering the render point set. When the predicted point is added to the render point set in the post-processing, the input trajectory and the predicted point are rendered on a screen. When the predicted point is not added to the render point set in the post-processing, only the input trajectory is rendered on the screen.

Abstract: The present invention relates to a modular interactive digital game board comprising one or more touch pads and one or more movable elements (14) comprising at least one near field communication tag (16), each of the touch pads (1) being configured to interconnect and detect one or more of the movable elements (14), the at least one tag (16) being configured such that an identifier is transmitted in the presence of an electromagnetic field.

Abstract: A touch device according to an embodiment includes: a plurality of touch electrodes; and a touch controller for measuring a voltage varied based on a short circuit resistance of the touch electrodes and detecting short-circuit states of the touch electrodes.

Abstract: Some embodiments of the present disclosure disclose a wrist-worn device, including a micro control unit, a distance sensor and a rotating shaft arranged on a side surface of the wrist-worn device, an outer circumferential surface of the rotating shaft is provided with a plurality of protrusions; wherein the distance sensor is configured to collect distance data and send the distance data to the micro control unit, and the distance data includes a distance between the distance sensor and the rotating shaft; and the micro control unit is configured to obtain distance changing information on a distance between the distance sensor and the rotating shaft during a preset time according to the distance data, and determine a rotation angle of the rotating shaft according to the distance changing information on the distance.

Abstract: An electronic device is provided. The electronic device includes a first housing, a second housing, a hinge configured to foldably connect one side of the first housing to one side of the second housing, a display including a first display area disposed in the first housing and a second display area disposed in the second housing, one or more processors, and memory storing instructions that, when executed by the one or more processors, cause the electronic device to, in case that attachment of an external accessory for displaying a user interface is detected in the second display area, display a user interface corresponding to a type of the external accessory in an area of the second display area to which the external accessory is attached.

Abstract: A touch detection circuit includes at least one driving signal generator. The least one driving signal generator receives a first power voltage and a second power voltage as operation powers. Each of the at least one driving signal generator generates at least one driving signal based on the first power voltage and a second power voltage and each of the at least one driving signal swings between a first voltage and a second voltage, wherein the first voltage is a positive voltage and the second voltage is a negative voltage.

Abstract: The present disclosure provides an electronic device including a substrate, a circuit layer, an organic structure, and a sensing structure. The circuit layer is disposed on the substrate, and the circuit layer includes a switch. The organic structure is disposed on the substrate, and in a top view of the electronic device, the organic structure is adjacent to an edge of the substrate. The sensing structure is disposed on the circuit layer, and the sensing structure includes a sensing unit and a wire electrically connected to the sensing unit. The wire crosses over the organic structure and is electrically connected to the switch.

Abstract: A circuit, for a touch panel, comprising N touch signal processing circuits; a backup processing circuit; and a controller, coupled to the N touch signal processing circuits and the backup processing circuit, configured to determine whether one of the N touch signal processing circuits is failed and generate a determining result, and control the N touch signal processing circuits and the backup processing circuit to process N touch signals received from the touch panel to obtain N digital signals according to the determining result.

Abstract: A touch pad includes: a sensor board capable of recognizing a position of manual contact; a housing to which the sensor board is fixed; a base member supporting the housing in a state of being capable of ascending and descending the housing; and a switch depressed when the sensor board is depressed and the housing is moved toward the base member. The touch pad includes first and second pivot shaft sections provided between the base member and the housing and rotatably supporting the housing in a state of being displaceable in a direction toward the base member. The first and second pivot shaft sections are arranged at positions straddling the switch between the two in a direction from one edge of the sensor board to the other edge on the side opposite to the one edge.

Abstract: An electronic device that can include a device main body, a button on the device main body and at least partially exposed out of the device main body, and an external force recognition and tactile feedback component inside the device main body and opposite to the button. The external force recognition and tactile feedback component can recognize a magnitude of an external force and perform a corresponding tactile feedback action based on the recognized magnitude of the external force, when the button is subjected to the external force. An external force recognition and tactile feedback method for an electronic device includes recognizing a magnitude of an external force, and performing a corresponding tactile feedback action based on the recognized magnitude of the external force.

Abstract: An input sensing part includes a first sensing electrode. A second sensing electrode is electrically insulated from the first sensing electrode and crosses the first sensing electrode. A first-1 pen sensing electrode is adjacent to the first sensing electrode, is electrically insulated from the second sensing electrode, and crosses the second sensing electrode. A second-1 pen sensing electrode is adjacent to the second sensing electrode, is electrically insulated from the first sensing electrode and the first-1 pen sensing electrode, and crosses the first sensing electrode and the first-1 pen sensing electrode. A first-2 pen sensing electrode is disposed on a layer that is different from that on which the first sensing electrode and the first-1 pen sensing electrode are disposed, and overlaps a portion of the first sensing electrode, a plan view.

Abstract: A touch sensor panel can include a first touch electrode of a first type associated with a first touch node on the touch sensor panel, the first touch electrode electrically connected to a first trace configured to couple the first touch electrode to first touch circuitry, and a second touch electrode of a second type associated with the first touch node on the touch sensor panel, the second touch electrode electrically connected to a second trace configured to couple the second touch electrode to second touch circuitry. The first touch electrode can be formed by a solid and transparent conductive material in the touch sensor panel, the solid and transparent conductive material configured to provide shielding with respect to circuitry external to the touch sensor panel. The second touch electrode can be formed by a first metal mesh material in the touch sensor panel.

Abstract: Touch electrode architecture techniques can be used to reduce or eliminate metal mesh within the one or more high-transmittance regions of a touch screen including one or more high-transmittance regions. In some examples, one or more optical devices can be integrated with a touch screen such that light associated with the one or more optical devices passes through one or more layers of the touch screen. In some such examples, to avoid degrading performance of the optical devices, one or more high-transmittance regions can be used. Additionally or alternatively, in some examples, the high-transmittance can be achieved using touch electrode architecture techniques that use transparent or semi-transparent materials instead of opaque metal mesh within the high-transmittance regions.

Abstract: Methods and systems are provided for resolving a user input. One method involves associating a user input with a first application based on an initial location associated with one or more messages of the user input message stream corresponding to a first graphical user interface (GUI) display associated with the first application. Thereafter, in response to identifying an updated location associated with a subsequent message of the message stream corresponding to a second GUI display associated with a second application, the method provides indication of the updated location to the second application to generate a graphical representation of a cursor associated with the user input at the updated location within the second GUI display and provide second indication of the updated location of the user input to the first application to respond to the user input in accordance with the updated location.

Abstract: An apparatus for generating a roll map of a merge-wound electrode includes a position measurement device configured to acquire coordinate value data for a longitudinal position of an electrode according to an amount of rotation of the rewinder. The apparatus includes an input device configured to input an input signal indicating a start of merge-winding or an end of merge-winding, a seam detector configured to detect a seam, a reference point detector configured to detect a plurality of reference points of the merge-wound electrode, and a roll map generator configured to generate a roll map for simulating the merge-wound electrode moving in a roll-to-roll state based on the input signal of the input device, and to display the longitudinal coordinate values of the electrode, the electrode coordinate values of the seam, and the electrode coordinate values of the plurality of reference points of the merge-wound electrode on the roll map.

Abstract: Methods, apparatus, devices, subsystems, and systems related to irregular devices and methods for designing and fabricating the irregular devices are provided. In one aspect, a device includes: a backplane comprising a plurality of circuits and a plurality of elements arranged on the backplane. Each of the plurality of elements includes a metallic electrode. Each of the metallic electrodes is coupled to a respective circuit of the plurality of circuits in the backplane through a corresponding via of a plurality of vias, and a position relationship between the metallic electrode and the corresponding via satisfies one or more criteria.

Abstract: An example touch display apparatus includes a touch display panel including one or more touch areas. Each touch area can include touch structures, where each touch structure includes first touch electrodes arranged along a first direction and second touch electrodes arranged along a second direction. Each first touch electrode can include first electrode blocks arranged along the second direction. Each second touch electrode can include second electrode blocks arranged along the first direction. The display apparatus can further include at least one touch driver chip, where one touch driver chip is electrically connected to a touch signal line connected to touch structures in one touch area.

Abstract: A display device including an input sensor divided into a plurality of first sensing areas and a plurality of second sensing areas, which are alternately disposed, and the plurality of first sensing areas and the plurality of second sensing areas have the same area. Each of the plurality of first sensing areas and the plurality of second sensing areas includes a corresponding crossing area of crossing areas between a plurality of first sensing electrodes and a plurality of second sensing electrodes. Openings of the sensing electrodes disposed on each of the plurality of first sensing areas have a first arrangement, and openings of the sensing electrodes disposed on each of the plurality of second sensing areas have a second arrangement different from the first arrangement.

Abstract: A touch display device including a touch power signal generation circuit includes a display panel having a driving voltage line and a base voltage line for driving a light emitting element, a plurality of touch electrodes, and a subpixel, a touch circuit applying a touch driving signal to the plurality of touch electrodes and detecting touch sensing according to a change in capacitance, a touch power signal generation circuit applying a touch power signal having the same phase and amplitude as the touch driving signal to the driving voltage line and the base voltage line during a touch driving period, and a timing controller controlling the touch circuit and the touch power signal generation circuit.

Abstract: The present disclosure relates to a sensor board and a display device. The sensor board includes a light-emitting device array (106) in which light-emitting devices is two-dimensionally arranged and loop coils which, in operation, detects a position that has been indicated by an electronic pen, through electromagnetic induction generated with the electronic pen. Line conductors connected to the light-emitting devices of the light-emitting device array is partly used in common as coil conductors formed by the loop coils.

Abstract: A data input device intended to be affixed to a capacitive touch screen of a terminal includes: a substantially parallelepipedal plate including a lower surface, which is substantially planar, for affixing the device to the touch screen, and an upper surface including an array of input zones that form a keyboard and are configured to enable a finger of a user to be detected by the touch screen when the device is affixed thereto; and at least two contact pads, which are electrically conductive and arranged on the lower surface, and each electrically connected to means for discharging, towards the outside of the touch screen, electric charges concentrated at the contact pads when the device is affixed to and held on the touch screen.

Abstract: A display substrate and a display device are provided. The display substrate has a display area and a peripheral area surrounding the display area. The display substrate includes a first common voltage line, a second common voltage line and an integrated circuit. The first common voltage line is provided in the peripheral area and at least partially surrounds the display area; the second common voltage line is provided in the peripheral area, located on a side of the first common voltage line away from the display area, and at least partially surrounds the display area; the integrated circuit is provided in the peripheral area, and located on a first side of the display area, configured to provide first signals to the first and second common voltage line during a display stage, and provide second signals to the first and second common voltage line during a touch stage.

Abstract: An electronic apparatus includes an electronic panel including a plurality of sensing groups spaced apart from each other, and an electronic module overlapping with the electronic panel in a plan view. Each of the sensing groups includes a first sensing electrode extending in a second direction, and second sensing electrodes spaced apart from each other in the second direction, located on the same layer as the first sensing electrode, and face the first sensing electrode in a first direction. An opening overlapping with the electronic module and penetrating a first sensing group of the sensing groups is defined in the electronic panel, and at least one selected from the first sensing electrode and the second sensing electrodes of the first sensing group extends along an edge of the opening.

Abstract: A method according to one embodiment includes placing a microcontroller of an access control device in a sleep state, monitoring a radio frequency (RF) field using a near field communication (NFC) controller and an NFC antenna of the access control device, waking the microcontroller from the sleep state in response to detecting that an RF field value of the RF field has surpassed a predefined threshold, masking capacitive touch events received by the microcontroller from a capacitive touch controller in response to waking the microcontroller from the sleep state, processing RF-intensive communication between the access control device and a mobile device in response to masking the capacitive touch events, and unmasking capacitive touch events received by the microcontroller from the capacitive touch controller in response to processing the RF-intensive communication.

Abstract: An elongated biometric device provides a slim solution for capturing biometric data, and may be placed on a portion of an electronic device having limited space, such as a side of the electronic device. The elongated biometric device may include a force sensor, which may be positioned within a housing of the electronic device and actuated through posts extending from the elongated biometric device through the housing to transfer an applied force to the force sensor.

Abstract: The present disclosure provides a touch display panel. The touch display panel includes a display substrate and a touch layer, wherein the touch layer includes a plurality of touch units and a plurality of touch lines which are disposed on the display substrate; wherein the touch lines are connected to at least one touch unit and are configured to electrically connect the touch unit connected thereto to a touch integrated circuit; the plurality of touch lines at least include a first trace and a second trace which are disposed in a non-display region, a length of the first trace being greater than a length of the second trace, and a cross-sectional area of the first trace being larger than a cross-sectional area of the second trace.

Abstract: A touch display panel and an electronic terminal are disclosed in the present application, including a first conductive layer and a second conductive layer of different layers, and an insulation layer is arranged between the first conductive layer and the second conductive layer. The first conductive layer includes a plurality of touch electrodes arranged along a first direction and a second direction. The second conductive layer includes a first touch lead and a first auxiliary structure both overlapped with a first touch electrode in the plurality of touch electrodes. The first auxiliary structure is located on at least one side of the first touch lead.

Abstract: Devices, systems and methods are provided. A gaming device includes a non-optical gesture input device to detect gesture inputs performed by a user, a processor circuit and a memory coupled to the processor circuit. The memory includes machine-readable instructions that, when executed by the processor circuit, cause the processor circuit to receive a first gesture input value from the non-optical gesture input device and that corresponds to a user-specific gesture that the user performs, associate the first gesture input value with a first gaming device operation to be performed by the gaming device, and responsive to receiving the first gesture input value that is associated with the first gaming device operation, cause the gaming device to perform the first gaming device operation.

Abstract: An electroluminescent display is disclosed. The electroluminescent display includes an electroluminescent element disposed in a display area of a substrate, an encapsulation unit disposed on the electroluminescent element, a first mesh electrode layer disposed on the encapsulation unit, an insulating layer covering the first mesh electrode layer, and a second mesh electrode layer disposed on the insulating layer. The first mesh electrode layer includes a first mesh electrode and a second mesh electrode separated from the first mesh electrode. The second mesh electrode layer includes a third mesh electrode extended in a first direction and a fourth mesh electrode extended in a second direction intersecting the first direction through the first mesh electrode intersecting the third mesh electrode.

Abstract: Provided is an electronic device. The electronic device includes a display panel and an input sensing part disposed on the display panel and including a first area, a second area configured to surround the first area, and a third area configured to surround the second area. The input sensing part includes first to third nodes, which are disposed on the first to third area, respectively, and each of the first to third nodes includes a first connection pattern and a second sensing pattern including a third pattern and a fourth pattern spaced apart from each other in a second direction. At least a portion of the second nodes has a shape different from that of each of the first nodes, and at least portion of the third nodes a shape different from that of each of the first nodes.

Abstract: A waterproof-state recognition and processing method and device is applicable to a capacitive touch screen. The method and device can differentiate a water-affected region from a water-free region, and allow a touch-responding operation for the water-free region when the water-affected region exists. The method includes: scanning the screen to obtain data of multiple channels of the screen; determining whether any of the data reaches a waterproof threshold; when any of the data reaches the waterproof threshold, performing a waterproof-state process; when none of the data reaches the waterproof threshold, determining whether any of the data reaches a finger-touch threshold; when any of the data reaches the finger-touch threshold, performing a finger-touch-state process; and when none of the data reaches the finger-touch threshold, performing an idle-state process.

Abstract: An electronic device may have a display with touch sensors. One or more shielding layers may be interposed between the display and the touch sensors. The shielding layers may include shielding structures such as a conductive mesh structure and/or a transparent conductive film. The shielding structures may be actively driven or passively biased. In the active driving scheme, one or more inverting circuits may receive a noise signal from a cathode layer in the display and/or from the shielding structures, invert the received noise signal, and drive the inverted noise signal back onto the shielding structures to prevent any noise from the display from negatively impacting the performance of the touch sensors. In the passive biasing scheme, the shielding structures may be biased to a power supply voltage.

Abstract: A display device includes a display panel including pixels which display images; a display panel driving circuit which outputs a drive signal for driving the display panel; and a compensation signal generator which senses a noise signal generated by the display panel or the display panel driving circuit and generates a noise compensation signal corresponding to the noise signal. The compensation signal generator includes: a detection unit which detects a phase shift signal generated by synthesizing target signals; and an inversion unit which generates a phase inversion signal by inverting a phase of the phase shift signal.

Abstract: A display device including a substrate, a plurality of pixel electrodes arranged in a form of a matrix in a plane parallel with the substrate, a display functional layer exerting an image display function on a basis of an image signal supplied to the plurality of pixel electrodes, a driving electrode opposed to the plurality of pixel electrodes, and a plurality of detecting electrodes arranged in a form of a plane opposed to the driving electrode, separated and arranged at a pitch of a natural number multiple of an arrangement pitch of the pixel electrodes in one direction in the arrangement plane, and each capacitively coupled with the driving electrode.

Abstract: A display apparatus with a detecting device includes a substrate, a plurality of pixels provided to the substrate, an inorganic light emitting element provided to each of the pixels, a plurality of detection electrodes arranged in a first direction parallel to the substrate, and a plurality of drive electrodes arranged in a second direction intersecting the first direction and provided intersecting the detection electrodes in planar view seen from a direction perpendicular to the substrate. The detection electrodes each includes a plurality of first linear parts, a plurality of second linear parts extending in a direction intersecting the first linear parts, and a bent part that couples the first linear part and the second linear part, the first linear parts and the second linear parts are metal thin wires, and the drive electrodes are translucent electric conductors.

Abstract: A sensor module includes: a plurality of sensor electrodes arranged in a plurality of rows and a plurality of columns; a plurality of terminals respectively corresponding to the plurality of sensor electrodes; and a plurality of sensor wirings respectively corresponding to the plurality of sensor electrodes. Each of the plurality of sensor wirings electrically connects the respective sensor electrode to the respective terminal without passing through any other sensor electrode. Each of the plurality of sensor electrodes does not overlap at least the plurality of sensor wirings other than the corresponding sensor wiring.

Abstract: A device with a flexible region that is manipulable in a second standard direction substantially perpendicular to a rotational axis extending in a first standard direction includes a flexible touch sensing panel. The flexible touch sensing panel includes first touch sensing electrodes and a first bridge. The first bridge is on a layer substantially different from a layer on which the first touch sensing electrodes are located and the first bridge connects two first touch sensing electrodes adjacent to each other. The first bridge includes a first portion extending in a first extension direction, which forms a first angle with the first standard direction. The first angle is not about k×90° (where “k” is a non-zero positive or negative odd integer) and is not about m×180° (where “m” is an integer).

Abstract: The invention is about a sensor assembly comprising, on an active part (621, 622), an assembly of conductive nanoparticles (560) in an insulating ligand, a substrate on which conductive tracks (611, 612, 613, 650, 651) and the assembly of nanoparticles are deposited, a thin stiffener (630) extending under the active part, glued to the substrate by a hardening glue on a first face of the thin stiffener and a pressure-sensitive adhesive attached to a second face of the thin stiffener (630), opposite the first face, configured for bonding the miniature sensor to a surface to be functionalized. The invention also relates to a method for manufacturing of such a sensor assembly.

Abstract: Provided are a touch sensor and a display device.

Abstract: A computing system configured to (i) obtain a set of key-value pairs, wherein each key-value pair corresponds to a respective timestamp in a period of time, (ii) for at least one timestamp in the given period of time: (a) identify a first subset of the key-value pairs corresponding to the timestamp, (b) sort the first subset, and (c) generate a subset of compression values for the sorted first subset, (iii) for at least one key: (a) identify a second subset of the key-value pairs corresponding to the key, (b) sort the second subset, and (c) generate a subset of compression values for the sorted second subset, and (iv) store a set of compression values comprising (a) the subset of compression values that is generated for each of the at least one timestamp and (b) the subset of compression values that is generated for each of the at least one key.

Abstract: A display device includes a display unit having pixels, a touch sensing unit including touch electrodes disposed on the display unit, and a touch driver configured to supply a touch driving signal to the plurality of touch electrodes and receive a touch sensing signal from the touch electrodes. The touch driver supplies a first touch driving signal having a first phase to one or more first touch electrodes, and supplies a second touch driving signal having a second phase opposite to the first phase to one or more second touch electrodes, at least a part of which is disposed across a specific point from the first touch electrodes. The touch driver receives a first touch sensing signal having the first phase from at least one of the first touch electrodes, and receives a second touch sensing signal having the second phase from at least one of the second touch electrodes.

Abstract: Disclosed is a sensor module including a first substrate having an insulating property, a plurality of sensor electrodes over the first substrate, a second substrate having an insulating property over the plurality of sensor electrodes, at least one charge-dispersing film over the second substrate, and a third substrate over the at least one charge-dispersing film. The at least one charge-dispersing film may consist of one charge-dispersing film overlapping all of the plurality of sensor electrodes.

Abstract: A test method for a combination of touch sensitive processing apparatus and touch panel. The test method is configured to find out whether a stored time difference value with regard to driving signals is appropriate for the combination. If not, the test method is further configured to test several candidate time difference values for finding out one or a best one, which can be stored in a non-firmware of a non-volatile memory as a parameter for further touch sensitive processing. When none of the candidate time difference values is appropriate, the combination is determined as disqualified.

Abstract: The present disclosure relates to a touch detection device and method, and an electronic apparatus. The touch detection device comprises: a charge amplification circuit connected to a sensing point of a touch panel and configured to receive an excitation signal and charges of the sensing point, amplify the charges of the sensing point, and output a capacitance change signal of the sensing point; and a capacitance compensation circuit connected to the sensing point of the touch panel and configured to inject compensation charges into the sensing point in a process during which a level of the excitation signal changes, wherein a polarity of the compensation charges is related to a direction of the level of the excitation signal changing. The embodiment of the present disclosure may compensate for or even eliminate the influence caused by the parasitic capacitance of the touch panel, improve the accuracy of touch detection, and save the circuit area.

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.