An input detection system includes a display device with a detection function that includes a plurality of detection electrodes arrayed in a display region, an electronic apparatus case including an accommodation portion accommodating the display device with the detection function and a cover covering the display region of the display device with the detection function, and an input device that is mounted on the cover of the electronic apparatus case so as to rotate around a rotating axis extending in a normal direction to a surface of the cover and includes a first electrode and a second electrode facing the detection electrodes.

A system and method for sharing and manipulating digital content allows users an intuitive mechanism with which to interact with touchscreen devices. A provided device with short-range wireless connectivity can interact with a mobile device by providing physical contact points that can be moved or adjusted to interact with displayed content. A series of the physical contact points distributed about the perimeter of the provided device allows an application to collect data regarding the position and orientation of the provided device placed upon the screen of the mobile device. A second set of physical contact points, also made of conductive material, contains at least one individual contact point that functions as a capacitive ‘button’ when the user touches it. Upon placement of the provided device on the capacitive screen of a mobile device, real-time tracking of the changing touch patterns can provide a more intuitive interface for handling digital content.

An active capacitive pen is disclosed, including: a barrel; a first electrode disposed at an end of the barrel, an end of the first electrode away from the barrel serving as a tip of the active capacitive pen; a second electrode disposed on the barrel and spaced apart from the first electrode in an axial direction of the barrel; a third electrode disposed on the barrel and located between the first electrode and the second electrode in the axial direction of the barrel; a switching circuit, connected with the second electrode and the third electrode and configured to electrically connect the third electrode with the first electrode, or disconnect the third electrode from the second electrode. Also disclosed is an electronic terminal with the active capacitive pen.

A method executable by a touch screen processing module of a touch screen includes detecting, via one or more drive-sense circuits of the touch screen, one or more changes in electrical characteristics of one or more electrodes of the touch screen, determining an interface area of the touch screen based on location of the one or more electrodes, associating the interface area with a passive pen, and interpreting the one or more changes in the electrical characteristics as one or more impedance values. When the one or more impedance values is in a first range, the method further includes interpreting the one or more impedance values as a touch. When the one or more impedance values is in a second range, the method further includes interpreting the one or more impedance values as a pressure measurement.

A touch sensor detector system and method incorporating an interpolated sensor array is disclosed. The system and method utilize a touch sensor array (TSA) configured to detect proximity/contact/pressure (PCP) via a variable impedance array (VIA) electrically coupling interlinked impedance columns (IIC) coupled to an array column driver (ACD), and interlinked impedance rows (IIR) coupled to an array row sensor (ARS). The ACD is configured to select the IIC based on a column switching register (CSR) and electrically drive the IIC using a column driving source (CDS). The VIA conveys current from the driven IIC to the IIC sensed by the ARS. The ARS selects the IIR within the TSA and electrically senses the IIR state based on a row switching register (RSR). Interpolation of ARS sensed current/voltage allows accurate detection of TSA PCP and/or spatial location.

A computing device having a touch-sensitive surface and a display, detects a stylus input on the touch-sensitive surface while displaying a user interface. A first operation is performed in the user interface in accordance with a determination that the stylus input includes movement of the stylus across the touch-sensitive surface while the stylus is detected on the touch-sensitive surface. A second operation different from the first operation is performed in the user interface in accordance with a determination that the stylus input includes rotation of the stylus around an axis of the stylus while the stylus is detected on the touch-sensitive surface. A third operation is performed in the user interface in accordance with a determination that the stylus input includes movement of the stylus across the touch-sensitive surface and rotation of the stylus around an axis of the stylus while the stylus is detected on the touch-sensitive surface.

An electronic device is provided. The electronic device includes a housing comprising a conductive part, and a first nonconductive part connected to the conductive part, an antenna structure positioned inside the housing, and a pen input device attachable/detachable to/from the housing, wherein the pen input device comprises a second nonconductive part having at least a portion thereof overlapping the first nonconductive part when viewed in a direction in which a main beam of the antenna structure is radiated while the pen input device is attached to the housing, and at least a portion of the at least one antenna element overlaps the first nonconductive part and the second nonconductive part.

A touch apparatus according to an exemplary embodiment includes: a touch panel that is disposed on a display panel of a display device that drives a plurality of pixels according to a vertical synchronization signal and a horizontal synchronization signal, and includes a plurality of first touch electrodes for sensing a touch input in a first direction and a plurality of second touch electrode for sensing a touch input in a second direction; a driver/receiver that applies a driving signal to at least one of the plurality of first touch electrodes and the plurality of second touch electrodes during a first section, and receives a detection signal from at least one of the plurality of first touch electrodes and the plurality of second touch electrodes during a second section after the first section; and a controller that generates touch information by using the detection signal, wherein the driving signal is synchronized with at least one synchronization signal of the horizontal synchronization signal and the vertical synchronization signal.

The present embodiment relates to a touch driving device and a display device including the same, and more particularly, to a touch driving device capable of reducing the power consumption thereof by changing a sampling method thereof and a pulse of a touch drive signal, compared to a conventional touch driving device, and a display device including the same.

A processing system for an input device includes an in-phase and quadrature (I/Q) receiver module including a first and second charge integrators, and first and second demodulator modules. The I/Q receiver module alternates integration of a resulting signal, received from a receiver electrode of the input device, between the first and the second charge integrators in four consecutive quarter cycles, to obtain four consecutive integration results. The four consecutive quarter cycles coincide with one cycle of a local oscillator signal for the first and second demodulator modules. The I/Q receiver module further alternates demodulation of the four consecutive integration results between the first and second demodulator modules. The first demodulator module performs an in-phase demodulation to produce an in-phase component of a sensing signal associated with the first resulting signal, and the second demodulator module performs a quadrature demodulation to produce a quadrature component of the sensing signal.