An apparatus includes a sensor configured to detect an object in a space and a display control unit configured to control a display unit to display a reference object such that the reference object appears to be located in the space.

Disclosed are a method and an apparatus for recognizing a key input from a virtual keyboard according to one embodiment of the present invention. The method for recognizing a key input from a virtual keyboard according to one embodiment of the present invention is a method for recognizing a key input from a virtual keyboard using at least one camera, e.g. two cameras or one 3D camera, and includes the steps of: tracking a user tool when the actuation of the user tool for a key input on the virtual keyboard is detected using the camera, and continuing the tracking until the vertical coordinate of the position of the user tool is less than or equal to a predetermined vertical threshold value; and determining that a key input has been carried out at the last tracked horizontal position of the user tool.

The present invention discloses embodiments for an optical touch systems and methods. One embodiment of the present invention is directed to an optical touch system that includes at least two image sensors configured to detect a plurality of objects over a touch surface to generate a plurality of object images; a plurality of first light receiving elements, wherein the first light receiving elements are arranged on a side of the touch surface along a first direction and are configured to detect the objects; and a processing unit configured to calculate a plurality of candidate coordinate data, based on the object images, and select the coordinate data that represents coordinate data of the objects from the candidate coordinate data, based on detection data of the first light receiving elements.

The present invention discloses embodiments for an optical touch systems and methods. One embodiment of the present invention is directed to an optical touch system that includes at least two image sensors configured to detect a plurality of objects over a touch surface to generate a plurality of object images; a plurality of first light receiving elements, wherein the first light receiving elements are arranged on a side of the touch surface along a first direction and are configured to detect the objects; and a processing unit configured to calculate a plurality of candidate coordinate data, based on the object images, and select the coordinate data that represents coordinate data of the objects from the candidate coordinate data, based on detection data of the first light receiving elements.

A touch device and a sensing compensation method are provided. The touch device may include a touch panel, a sensing compensation circuit and a sensing circuit. The sensing compensation circuit may be coupled to the touch panel for providing a compensation-impedance according to features of the touch panel. The sensing circuit may be coupled to the sensing compensation circuit. The sensing circuit receives touch information compensated by the sensing compensation circuit.

A display device includes a pixel array comprising a plurality of pixels, each of the pixels comprising a plurality of sub-pixels; a black matrix located between the sub-pixels; and an optical sensing array at the black matrix, the optical sensing array comprising a row conductor, and a column conductor that crosses the row conductor at a crossing region.

A display device includes a pixel array comprising a plurality of pixels, each of the pixels comprising a plurality of sub-pixels; a black matrix located between the sub-pixels; and an optical sensing array at the black matrix, the optical sensing array comprising a row conductor, and a column conductor that crosses the row conductor at a crossing region.

A position detection apparatus includes: an imaging portion that captures an image of a detection area for detecting indication positions of indicators; and an indicator detecting portion that detects the indication positions of the indicators based on operation image data captured by the imaging portion when indication operations by the indicators are performed in the detection area and background image data captured by the imaging portion when the indication operations by the indicators are not performed.

A mobile terminal including a touchscreen; a wireless communication unit configured to wirelessly communicate with an external watch terminal having a holography module disposed in a band of the watch terminal and being worn by a user; a sensing unit configured to sense a gesture of the user; and a controller configured to display a launch screen of a prescribed application on the touchscreen, receive a prescribed gesture sensed through the sensing unit, and control the wireless communication unit to transmit a control command to the external terminal to output a holographic image corresponding to the launch screen, in response to the received prescribed gesture.

An operation detection device according to an embodiment includes: a display unit that displays an operation unit as a virtual image; a sensor that detects a position of an object approaching the operation unit; and a determination unit that determines whether or not the operation unit has been pressed based on the position of the object detected by the sensor. The determination unit determines that the operation unit has been pressed before the object reaches the operation unit.