An example method includes determining, by one or more processors, an estimated location of a wearable computing device on a display device that is not presence-sensitive, wherein the wearable computing device is configured to be worn on a wrist of a user; causing the display device to output, at the estimated location, a graphical pattern; determining, by the one or more processors and based on optical data generated by an optical sensor of the wearable computing device, a refined location of the wearable computing device; and utilizing, by the one or more processors, the refined location of the wearable computing device as a location of user input for an application outputting a graphical user interface via the display device.

An example method includes determining, by one or more processors, an estimated location of a wearable computing device on a display device that is not presence-sensitive, wherein the wearable computing device is configured to be worn on a wrist of a user; causing the display device to output, at the estimated location, a graphical pattern; determining, by the one or more processors and based on optical data generated by an optical sensor of the wearable computing device, a refined location of the wearable computing device; and utilizing, by the one or more processors, the refined location of the wearable computing device as a location of user input for an application outputting a graphical user interface via the display device.

Disclosed are a light emitting display device, a light emitting display panel, a driving circuit, and a driving method. A light emitting display device, a light emitting display panel, a driving circuit, and a driving method with an embedded touch sensor are provided in which a data voltage and a first reference voltage are supplied to a plurality of data lines and a plurality of reference electrodes which are arranged in the light emitting display panel in a first driving period, and a second reference voltage different from the first reference voltage is supplied to one or more of the plurality of reference electrodes in a second driving period different from the first driving period.

Disclosed are a light emitting display device, a light emitting display panel, a driving circuit, and a driving method. A light emitting display device, a light emitting display panel, a driving circuit, and a driving method with an embedded touch sensor are provided in which a data voltage and a first reference voltage are supplied to a plurality of data lines and a plurality of reference electrodes which are arranged in the light emitting display panel in a first driving period, and a second reference voltage different from the first reference voltage is supplied to one or more of the plurality of reference electrodes in a second driving period different from the first driving period.

An operation method of an electronic device for sensing an optical signal is provided. The electronic device includes a plurality of optical sensors and a plurality of light-emitting elements disposed adjacent to the plurality of optical sensors. The operation method of the electronic device for sensing the optical signal includes the following steps. The optical signal is provided to a first optical sensor of the plurality of optical sensors. The first optical sensor outputs a driving signal when dimming the plurality of light-emitting elements adjacent to the first optical sensor. Therefore, the accuracy of sensing the optical signal may be effectively increased.

There is provided a display control device, display control method, and program capable of executing control such that information can be displayed more appropriately and efficiently according to an environment in which information is displayed or a situation of displayed information, the display control device including: a display control unit configured to decide a display region of a display object to be displayed on a display surface according to information regarding a real object on the display surface.

A system for human interaction with virtual objects comprises: a touch sensitive surface, configured to detect a position of a contact made on the touch sensitive surface; a reference layer rigidly attached to the touch sensitive surface and comprising one or more patterns; a display device, configured to display a virtual object that is registered in a reference coordinate fixed with respect to the touch sensitive surface; one or more image sensors rigidly attached to the display device, configured to capture an image of at least a portion of the one or more patterns; and at least one processor, configured to determine a position and an orientation of the display device with respect to the touch sensitive surface based on the captured image, and identify an interaction with the virtual object based on the detected position of the contact made on the touch sensitive surface.

The position detection method includes the steps of (a) obtaining a first taken image by imaging a pointing element with an operation surface as a background using a first camera while performing illumination with a first illumination section disposed so that a shadow of the pointing element on the operation surface is not substantially imaged by the first camera, (b) obtaining a second taken image by imaging the pointing element with the operation surface as a background using a second camera disposed at a different position from a position of the first camera while performing illumination with a second illumination section disposed so that the shadow of the pointing element on the operation surface is not substantially imaged by the second camera, and (c) detecting a position of the pointing element with respect to the operation surface using the first taken image and the second taken image.

A system for detecting a user input to a device comprises a display arrangement (4) arranged to provide a display (20) on a surface. An optical proximity sensing arrangement (6, 8) is configured to produce touch information relating to whether an input object is within a threshold distance of the surface. An acoustic position sensing arrangement (10, 12, 14, and 16) configured to produce position information relating to a position of the input object on the surface. A processing arrangement configured to determine an input to the device from the position information only when it determines from the touch information that the input object is within the threshold distance of the surface.

A meta projector includes an edge emitting device configured to emit light through a side surface thereof, a meta-structure layer spaced apart from the upper surface of the edge emitting device that includes a plurality of nanostructures having a sub-wavelength shape dimension smaller than a wavelength of the light emitted from the edge emitting device, and a path changing member configured to change a path of the light emitted from the edge emitting device so as to direct the path toward the meta-structure layer. The meta projector may thus be configured to emit a light pattern of structured light, based on directing the light emitted from the edge emitting device through the meta-structure layer, while having a relatively compact device size.