Disclosed is a timing controller including a coordinate data generation circuit configured to generate X coordinate emission data for each data line group and Y coordinate emission data for each gate line group, a selection circuit configured to output the X coordinate emission data during an X coordinate field and to output the Y coordinate emission data 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 the data line groups based on the X coordinate emission data during the X coordinate field and allowing each pixel to emit light in units of the gate line groups based on the Y coordinate emission data during the Y coordinate field, wherein the X coordinate emission data for each data line group and the Y coordinate emission data for each gate line group have random color.

The instruction device includes a light source that emits light and a processor, in which the instruction device transmits a first signal representing information related to a drawing condition of the drawing image to an image generation device that generates a drawing image based on a detection result obtained by detecting the light, and receives a second signal representing information related to a detection state of the light from the image generation device.

The invention relates to an optical stylus (10) for an optical position determination device (1) comprising a position-encoded surface (50) having different position-encoding patterns (52). The optical stylus (10) comprises a housing (12) including: an image sensor (20) for capturing at least one image of any position-encoding pattern (52) of the position-encoded surface (50); an optical arrangement (15) comprising a dynamic optical element (16) configured to be electrically actuated in order to adjust the focal length of the optical stylus (10) as a function of a separation distance (D) between a reference point of the optical stylus (10) and the position of any position-encoding pattern (52) to have a substantially in-focus position-encoding pattern (52) corresponding to the position of the optical stylus (10), and a control unit (24) to control the dynamical optical element (16). The optical stylus further comprises a distance measurement sensor (32) to measure the separation distance (D). The control unit (24) is adapted for actuating the dynamic optical element (16) to adjust the focal length of the optical stylus (10) as a function of the output signal of the distance measurement sensor (32).

An electronic pen includes a light source configured to emit irradiation light, a rotating body configured to rotate and to reflect the irradiation light emitted from the light source, a first detection member configured to receive the irradiation light reflected by the rotating body, and a first diffraction element provided at an optical path from the light source to the first detection member and configured to diffract the irradiation light.

A method of controlling a projector includes projecting an achromatic area image representing a drawing area in which the projector receives drawing using a pointer on a projection surface at a first luminance at a ratio on the projection surface, the ratio being smaller than or equal to a specific ratio to a maximum luminance at which the projector capable of project an image on the projection surface, detecting a position on the projection surface pointed by the pointer while projecting the area image, determining whether or not the position is included in the drawing area, and displaying, by the projector, an area including at least a part of an outline of the drawing area at a luminance higher than the first luminance when it is determined that the position is included in the drawing area.

An interaction method for a display device includes: receiving a laser signal emitted by an emission device, wherein the laser signal is displayed on a laser sensing screen of the display device in at least one laser cursor; obtaining position information of the at least one laser cursor on the laser sensing screen; obtaining operation information transmitted by the emission device; and performing a corresponding operation according to the operation information and the position information of the at least one laser cursor. A display device and a non-transitory storage medium are also provided.

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.

Aspects of the present invention relate to providing see-through computer display optics.

An application control system and method is adapted for use with an entertainment system of a type including a display such as a monitor or TV and having display functions. A control device may be conveniently held by a user and employs an imager. The control system and method images the screen of the TV or other display to detect distinctive markers displayed on the screen. This information is transmitted to the entertainment system for control of an application or is used by the control device to control an application.

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.