A touch input system includes a touch panel, configured to transmit an uplink signal; and an active stylus, configured to analyze the uplink signal, synchronize timing and bi-directionally communicate with the touch panel according to the uplink signal; wherein the uplink signal includes a preamble, for synchronizing the timing; a digital data, for bi-directionally communicating between the active stylus and the touch panel; and a cyclic redundancy check, for executing an error check and an error correction for data.

An information processing method includes, in a situation that a connection between a first electronic device and a second electronic device is established for first time, obtaining identity information of the second electronic device; obtaining a communication protocol corresponding to the identity information; and based on a data path formed after the first electronic device is connected to the second electronic device, sending the communication protocol to the second electronic device, to enable the second electronic device to communicate with the first electronic device based on the communication protocol.

A display device including: a display unit having a plurality of pixels; a plurality of touch electrodes disposed on the display unit; a touch line connected to a first end of each of the plurality of touch electrodes; a common voltage line spaced apart from the plurality of touch electrodes; and a plurality of switching elements connected between the common voltage line and a second end of each of the plurality of touch electrodes.

A display device includes a thin-film transistor layer disposed on a substrate, the thin-film transistor layer including a thin-film transistor, a light emitting element layer disposed on the thin-film transistor layer, the light emitting element layer including a pixel defining layer defining emission areas, and a pixel electrode disposed in each of the emission areas, a touch electrode disposed on the light emitting element layer, the touch electrode overlapping the pixel defining layer and sensing a touch, and a code pattern defined by a planar shape of the pixel defining layer that is distinguished from the pixel electrode and the touch electrode, the code pattern having position information.

An example electronic device according to various embodiments may include a display, a wireless communication circuit and at least one processor operatively coupled with the display and the wireless communication circuit, and the at least one processor may be configured to receive motion sensor values from an external electronic device through the wireless communication circuit, count the number of approach indicators received together with the motion sensor values, and discard the received motion sensor values when the number exceeds a threshold value.

A display device is disclosed that includes a plurality of pixels and a plurality of code pixels. The pixels include light-emitting elements, which display an image. The code pixels are disposed in the same layer as the pixels and are adjacent to a reference point disposed between the pixels. The code pixels include infrared light-emitting elements, which emit infrared light. At least one of the code pixels, disposed in a particular direction from the reference point, emit the infrared light to provide a code pattern having position information.

An ink file output method is provided, which includes: generating M (M is an integer of 1 or more) pieces of stroke data SD on the basis of event data generated as M input devices move, respectively; generating N (N is an integer of 1 or more and M or less) kinds of logical names LN (metadata) identifying the M number of input devices; generating a metadata block associating the M pieces of stroke data SD with the N kinds of logical names LN; and writing the M pieces of stroke data SD and the metadata block to an ink file.

An electronic device is provided. The electronic device includes a display, an electronic pen, a slot in which the electronic pen can be inserted in or detached from, a pen sensing module configured to sense an insertion/detachment of the electronic pen, a pen input module configured to receive an input using the electronic pen, and a processor configured to activate the pen input module while the display maintains an OFF-state when the detachment of the electronic pen is sensed within the OFF-state of the display.

A hand-held controller and a positional reference device for determining the position and orientation of the hand-held controller within a three-dimensional volume relative to the location of the positional reference device. An input/output subsystem in conjunction with processing and memory subsystems can receive a reference image data captured by a beacon sensing device combined with inertial measurement information from inertial measurement units within the hand-held controller. The position and orientation of the hand-held controller can be computed based on the linear distance between a pair of beacons on the positional reference device and the reference image data and the inertial measurement information.

An apparatus and method for a voltage driver circuit where a path between a ground node and an output node includes an inductor and/or another storage element and an energy transfer circuit composed of at least two switching elements (e.g., transistors) and at least two valve elements (e.g. diodes). The energy transfer circuit operates to discharge a capacitive load (e.g. output capacitor) into the storage element and facilitate transition from low to high voltage while increasing efficiency. An additional path to ground may be included via another switching element to prevent crosstalk and hold the output at ground potential.