The present embodiment relates to a touch power management circuit and a touch driving system including the same, and more particularly, to a touch power management circuit that prevents unnecessary power consumption during a pen touch driving period in order to reduce power consumption of a display device, and a touch driving system including the same.

Disclosed is a detection method performed by a sensor controller connected to a sensor including a plurality of sensor electrodes, the method detecting, with use of the sensor, a position of a passive pointer that does not transmit a signal and a position of an active pen that transmits a pen signal from a pen electrode provided on an end of the active pen. The method includes acquiring a pen pressure value indicating pressure applied to a pen tip of the active pen, and controlling an operation mode of the sensor controller according to the pen pressure value.

Examples are disclosed relating to providing haptic output to a stylus. In one example, rotational position data indicating a rotational position of the stylus about a longitudinal axis of the body of the stylus is received. Travel direction data indicating a direction of travel of a tip of the stylus relative to a touch-sensitive screen of a computing device is also received. Using at least the rotational position data and the travel direction data, one or more characteristics of a drive signal are determined. The drive signal is then transmitted to a haptic feedback mechanism within the body of the stylus to generate haptic output at the body.

A handwritten data capture method creates handwritten data including a plurality of pieces of stroke data that is based on writing performed on each page of a paper medium having a plurality of pages. The handwritten data capture method includes: acquiring the plurality of pieces of stroke data created based on the writing sequenced in a writing order; displaying the pieces of stroke data together on a display device; accepting an input of a break position of the pieces of stroke data; identifying a continuous portion of the pieces of stroke data based on the break position and the writing order; updating the display device to display the identified continuous portion of the pieces of stroke data in the writing order; and repeating the accepting, the identifying, and the updating until a given operation is received.

An embodiment may integrate a data driving circuit, a pixel sensing circuit, and a touch sensing circuit into one integrated circuit, thereby simplifying interfaces and wires between circuits and reducing the number of components.

Disclosed is a pointer position detection method for detecting, using a touch sensor including a plurality of sensor electrodes, a touch position indicated by a passive pointer that does not transmit a signal and a pen position indicated by an active pen configured to transmit a downlink signal from a pen electrode disposed in a distal end of the active pen, the pointer position detection method performed by a sensor controller connected to the touch sensor. The pointer position detection method includes: detecting one or more candidate pen positions based on a level of the downlink signal in each of the plurality of sensor electrodes; determining the pen position in an active region at least partially surrounded by a bezel region of a display device from the one or more candidate pen positions; and detecting a gesture performed by the active pen in the bezel region of the display device.

A display device includes: a display panel configured to display an image; an input sensor on the display panel; an approach sensing electrode arranged around the input sensor; and a sensor controller connected to the input sensor and the approach sensing electrode, wherein the sensor controller is configured to drive the input sensor in a first driving mode during a first input sensing frame and to drive the input sensor in a second driving mode during a second input sensing frame, and the sensor controller is further configured to provide an uplink signal to the approach sensing electrode in response to the input sensor operating in the first or second driving mode.

Provided is an input system including an instruction device; a detection device that detects an instruction position of the instruction device; a display device that is provided separately from the detection device and that displays an image of a space; a position detector that detects, in the space, a line-of-sight position in a line-of-sight of the position detector; a processor; and a memory storing instructions, which when executed by the processor, cause the processor to set, in the space, an instruction target area including a reference position of the instruction device, based on the line-of-sight position detected by the position detector at the time of reception of a predetermined operation by the instruction device, and control the display device to display the instruction position of the instruction device in the instruction target area and on the image of the space.

A portable information handling system commands a stylus to vibrate to aid in location of the stylus. The stylus vibrates at a frequency selected from a range of plural frequencies based upon a distance between the portable information handling system and stylus so that an audible noise is generated by the stylus with sufficient sound to be heard by a user of the portable information handling system while minimizing stylus power consumption. In one embodiment, a haptic film at the stylus exterior surface generates an ultrasonic noise detectable by a microphone of the portable information handling system for determining a vector to the stylus.

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.