A drawing system that can reserve a large drawing area and that can receive an input of instruction to an instruction input area at appropriately timing to make a drawing corresponding to the input. The drawing system includes a first terminal apparatus and a second terminal apparatus are connected to each other and communicating with each other. A display screen of a display device of the first terminal apparatus is dedicated to a drawing area, and a display screen of a display device of the second terminal apparatus is dedicated to an instruction input area. The first terminal apparatus includes a first position detection sensor, and a drawing is made in the drawing area provided on the display screen of the first display device according to instruction information from the second terminal apparatus and according to a drawing operation input received through the first position detection sensor.

The method disclosed herein includes determining a user interaction pattern with respect to a digital marker, the user interaction pattern based at least in part on user interaction with a capacitive sensor of a computing device, determining a geometric characteristic of the digital marker, and generating a predicted digital marking position of the digital marker on a digital medium of the computing device based at least in part on the determined geometric characteristic of the digital marker and the determined user interaction pattern.

Provided is a processing device for controlling input by an electronic pen. The electronic pen includes a side switch disposed on a side surface of the electronic pen and a device that obtains contact information indicating whether or not a pen tip of the electronic pen is in contact with a panel. The processing device includes a processor and a memory storing instructions which, when executed by the processor, cause the processing device to: obtain switch information indicating a depression state of the side switch, determine whether or not the pen tip is in contact with the panel based on the contact information, output the switch information when the pen tip is not determined to be in contact with the panel, and disable a value of the switch information when the pen tip is determined to be in contact with the panel.

According to certain embodiments, a foldable electronic device comprises: a flexible display; a first housing in which a first region of the flexible display is positioned; a second housing in which a second region of the flexible display is positioned; a hinge structure interposed between the first housing and the second housing and forming a folding axis; a sensor panel interposed between the flexible display and each of the first housing and the second housing, the sensor panel configured to identify input information of a stylus pen, and including a plurality of first vertical channels interposed the first housing and the first region of the flexible display and a plurality of second vertical channels disposed between the second housing and the second region of the flexible display; and a processor configured to control the sensor panel, wherein the processor is configured to: detect whether the foldable electronic device is folded; when the foldable electronic device is folded, transmit a deviation detection signal to at least one of the plurality of first vertical channels and receive the deviation detection signal through at least one of the plurality of second vertical channels; and correct the input information of the stylus pen using a compensation value corresponding to the received deviation detection signal.

In one embodiment, a method performed by an active stylus includes wirelessly receiving a synchronization signal from a touch controller. The method also includes determining a synchronization parameter of the synchronization signal, the synchronization parameter including an integer part and a fractional part, the integer part representing a positive integer multiple of an active-stylus clock period and the fractional part representing a fractional portion of the active-stylus clock period. The method further includes wirelessly transmitting information for reception by the touch controller, where the information includes a series of data portions, a successive data portion in the series being separated from a preceding data portion by a time interval. The time interval is based at least in part on the active-stylus clock period, the integer part of the synchronization parameter, and an updated fractional error value.

Embodiments described herein is able to provide a touch display device, an active pen, a touch system, a touch circuit, and a pen recognition method capable of efficiently providing a display function, a touch-sensing function, and a pen-touch-sensing function.

A capacitive electronic pen includes a housing, a core body, and a peripheral electrode. In the capacitive electronic pen, the core body includes an electrode core formed of a conductor having a spherical section and a shaft center section. The spherical section of the electrode core is not surrounded by the peripheral electrode and is disposed on a tip (distal) end of the capacitive electronic pen protruding from one opening in the axial direction of the housing. The shaft center section of the electrode core has multiple portions that vary in thickness (a cross-section size) including a thin portion, which coupled with the spherical section, and a thick portion. When the core body is fitted to the core body holder, at least a portion of the shaft center section of the electrode core is thinner than the diameter of the spherical section of the electrode core.

The present disclosure discloses a digital electromagnetic stylus. The electromagnetic styluses include a system-on-chip unit, a transceiver unit, a first rectifier and filter unit, a second rectifier and filter unit, a pressure and key detection unit, and a transmission control unit. The system-on-chip unit, the transmission control unit, and the transceiver unit are connected in sequence. The first rectifier and filter unit and the second rectifier and filter unit are connected in parallel between the system-on-chip unit and the transceiver unit. The pressure and key detection unit is connected to the system-on-chip unit. The present discloses further provides an input system, and a method for controlling the same.

Disclosed are a multifunctional stylus and a touch device. The multifunctional stylus includes a main structure, a charging assembly and a stylus tip. The main structure has an accommodating cavity therein, a first end of the main structure has a charging compartment recessed inwards and a charging electrode is disposed in the charging compartment. The charging assembly is located in the accommodating cavity, and the charging assembly is in electrical contact with the charging electrode to provide electrical energy for the charging electrode. The stylus tip is fixedly connected to a second end of the main structure. Both the multifunctional stylus and the touch device provided by the present disclosure have more functions and a higher utilization rate.

A computing device including a wireless communication device, an electrostatic interface, and a processor. The processor may be configured to, via the electrostatic interface, detect a peripheral device proximate the surface. In response to detecting the peripheral device, the processor may be further configured to establish wireless pairing with the peripheral device at least in part by performing an identifier exchange via the electrostatic interface. Subsequently to performing the identifier exchange, establishing wireless pairing may further include generating a temporary key and transmitting the temporary key to the peripheral device via the electrostatic interface. Subsequently to transmitting the temporary key, establishing wireless pairing may further include receiving a first wireless pairing signal from the peripheral device via the wireless communication device. Subsequently to receiving the first wireless pairing signal, establishing wireless pairing may further include transmitting a second wireless pairing signal to the peripheral device via the wireless communication device.