A handwriting input device having the shape of a digital pen, according to one embodiment of the present invention, comprises: a pen tip formed on one side of the pen; a light source part for irradiating coherent light to a surface around the pen tip; first and second image sensors for respectively sensing coordinate components necessary for calculating movement coordinates of the pen according to a user's handwriting input by using at least a portion of the coherent light reflected from the surface and received; and a processor for calculating the movement coordinates of the pen by using the coordinate components sensed through the first and second image sensors, wherein the first and second image sensors are disposed such that the distances between each sensor and the pen tip are the same.

According to one embodiment of the present invention, there is provided an electronic pen including a first pen module which includes a first pen core including a writing material used for a medium and a pattern sensing unit configured to acquire a handwritten image of a user in order for the electronic pen to acquire first location information that is location information of the electronic pen with respect to the medium, a second pen module which generates at least one of a magnetic field and an electronic field in order for the electronic pen to acquire second location information that is location information of the electronic pen with respect to an electronic device, a main body in which the first pen module is disposed at a first end portion thereof and the second pen module is fixed to at least one of the first end portion and a second end portion thereof and which has a cavity therein, and a control unit which generates a signal for controlling the first pen module and the second pen module.

A light-beam emitter and a display device are provided. The light-beam emitter includes a main body, and a light-emitting assembly, a projection button, an operation button, and a control assembly disposed on the main body; wherein the control assembly is connected to the projection button, the operation button, and the light-emitting assembly, the control assembly is configured to control the light-emitting assembly to emit a projection beam when the projection button is pressed, and the control assembly is configured to control the light-beam emitter to perform a corresponding operation when the operation button is pressed.

The present disclosure provides an interactive device, an inductive screen, an interactive system, and a positioning method, and relates to the field of display technologies, with an objective of providing a low-cost positioning and interactive method. The interactive device includes: a first housing, a first end of the first housing having a light-exit opening; a first light-emitting component, arranged inside the first housing and configured to emit a linear light beam through the light-exit opening of the first housing, the linear light beam rotating with rotation of the first housing; and a driving component, connected to a second end of the first housing opposite to the first end and configured to drive the first housing to rotate.

The disclosure relates to display devices which include data lines for transferring driving signals, gate lines for transferring scan signals, a plurality of pixel electrodes respectively disposed in a plurality of subpixels, common electrodes supplying a display common voltage upon display driving, readout lines connected with the common electrodes, and photo transistors including a gate, a first, and a second electrode. The second electrode of each of the photo transistors is electrically connected with the common electrode. The first electrode and gate electrode of each of the photo transistors is electrically connected with a common electrode or a gate line for display driving. Thus, it is possible to operate photo sensors to perform photo sensing even without all or some of the signal lines necessary for the operation of the photo sensors, thereby increasing the aperture ratio and transmittance.

Disclosed is a timing controller including a coordinate data generation circuit configured to generate X coordinate emission data for acquiring X coordinates and Y coordinate emission data for acquiring Y coordinates of touch coordinates, a selection circuit configured to time-divide 1 frame duration, to output the X coordinate emission data to a display driving circuit during an X coordinate field, and to output the Y coordinate emission data to the display driving circuit during a Y coordinate field, and a control data generation circuit configured to output control data for allowing each pixel to emit light in units of data line groups including i data lines using the X coordinate emission data during the X coordinate field and for allowing each pixel to emit light in units of gate lines including j gate lines using the Y coordinate emission data during the Y coordinate field, to the display driving circuit.

A method, system, and apparatus, including a program encoded on computer-readable medium, for providing remote control of a light beam pointing device. The system includes a camera that captures at least one image at a first location and a light source that generates a light beam in a direction within a viewable area of the camera. At a second location, remote from the first location, a display screen displays images captured by the camera and a controller that controls pointing of the light source toward a desired target object at the first location.

In one aspect, an LED display includes a matrix of LED pixels for producing a demanded image, and within the matrix, one or more sensor elements to detect visible light for document scanning, and/or IR light, and/or laser light. IR emitters also can be part of the matrix for time-of-flight based distance measurements using the matrix. The matrix background can be black or it can be e-ink to present, e.g., interactive user controls.

An integrated display and input device includes a first pixel array operative to provide a visually sensible output, a second pixel array operative to sense at least a position of an object with respect to the first pixel array, and circuitry receiving an output from the second pixel array and providing a non-imagewise input to utilization circuitry.

An electronic pen includes a rectifier circuit, a first integrated circuit, and a second integrated circuit. The rectifier circuit, in operation, stores a voltage in a first capacitor based on energy received from a position detecting device. The first integrated circuit operates using the voltage stored in the first capacitor. The first integrated circuit, in operation, controls transmission of a first signal that is wirelessly transmitted from a pen tip. The second integrated circuit, in operation, wirelessly transmits a second signal after the voltage stored in the first capacitor is greater than a predetermined voltage.