Converter and conversion method for converting a click position of a flat panel display into a light pen simulated signal for a semiconductor manufacturing machine are provided. A first interface circuit is configured to communicate with the flat panel display to obtain the click position. A second interface circuit is configured to communicate with the semiconductor manufacturing machine to obtain horizontal and vertical synchronization signals. A memory is configured to store a first display resolution of the flat panel display and a second display resolution of the semiconductor manufacturing machine. A processor is configured to obtain the light pen simulated signal according to a light pen position corresponding to the click position and the first and second display resolutions and to control the second interface circuit to provide the light pen simulated signal to the semiconductor manufacturing machine according to the horizontal and vertical synchronization signals.

Embodiments are directed to an electronic device having a hidden or concealable input region. In one aspect, an embodiment includes an enclosure having a wall that defines an input region having an array of microperforations. A light source may be positioned within a volume defined by the enclosure and configured to propagate light through the array of microperforations. A sensing element may be coupled with the wall and configured to detect input received within the input region. The array of microperforations are configured to be visually imperceptible when not illuminated by the light source. When illuminated by the light source, the array of microperforations may display a symbol.

A display system including an information processing device, a projector (a first projector), and a projector (a second projector) includes a first sensing unit sensing a first event which occurs by an operation of an indicator with respect to an image projected from the first projector; a second sensing unit sensing a second event which occurs by the operation of the indicator with respect to an image projected from the second projector; a replacement unit replacing a set of first event information representing the first event and second event information representing the second event with third event information representing a predetermined third event, in a case where the first event and the second event satisfy predetermined conditions; and a processing unit performing processing corresponding to the third event information.

Each projector specifies coordinates of a position which is indicated by an indicator, and outputs coordinate information representing the coordinates which are specified, and identification information identifying a display position of the image. An information processing device includes a conversion unit converting the coordinate information into coordinate information representing coordinates in a coordinate system of the information processing device on the basis of the identification information.

A display device is connectable to a plurality of electronic pens and has a screen on which information is displayed in accordance with inputs from a plurality of electronic pens and a touch input. The display device includes a touch detection sensor, a wireless communication section, a display controller, and a touch panel controller. The touch detection sensor detects a touch on the screen. The wireless communication section receives signals from the plurality of electronic pens connected. The display controller determines a distance between at least two electronic pens out of the plurality of electronic pens connected, from the signals received via the wireless communication section. The touch panel controller enables or disables a function of the touch detection sensor based on the above determination.

An operation target device projects a display video onto a projection surface, which is captured by a camera. An operation detectable region specifying unit specifies respective regions where an operation is detectable and is undetectable based on image data captured by the camera. Finger and pen contact position detection units detect the operation to the operation object based on the image data captured by the camera. The operation target device displays the display video so that the region where the operation to the operation object is detectable, which is specified by the operation detectable region specifying unit, is distinguished from the region where the operation to the operation object is undetectable. In addition, the operation target device changes a display position of the operation object so that the operation object is displayed within a range of the region where the operation to the operation object is detectable.

To provide a technology capable of calculating a position of an image displayed on a screen more flexibly. Provided is an information processing device including: a first reception unit configured to receive a first signal from a first input device; a second reception unit configured to receive a second signal different from the first signal from a second input device; a calculation unit configured to calculate a position of an image to be displayed on a screen on the basis of the first or second signal; and a display control unit configured to display the image at the position. The calculation unit has a first mode in which the position of the image is calculated on the basis of the first signal and a second mode in which the position of the image is calculated on the basis of the second signal, and switches a mode from the first mode to the second mode when a user manipulation event is detected in the first mode.

A mobile terminal including a touch screen; a stylus pen including a pressure sensor and an optical sensor; a wireless communication unit configured to wirelessly communicate with the stylus pen; and a controller configured to drive the stylus pen in a first operation mode in which the pressure sensor provided in the stylus pen is activated and the optical sensor is deactivated, when sensing information sensed by the pressure sensor indicates the stylus pen is in contact with the touch screen, and drive the stylus pen in a second operation mode in which both the pressure sensor and the optical sensor provided in the stylus pen are activated, when the sensing information sensed by the pressure sensor indicates the stylus pen is not in contact with the touch screen.

A pointer includes: a pointer tip having a tip configured to point a position; a transmitter configured to emit a signal from the pointer tip; and a main body connected to the pointer tip. The main body includes: an exterior housing forming an exterior; a detector configured to detect displacement of the exterior housing and output a detection signal; and a controller configured to change an operation state of the pointer in accordance with the detection signal. The detector includes: a detection device provided on an inner surface of the exterior housing and configured to detect the displacement; and a signal outputter configured to output the detection signal in the case where the detection device detects the displacement.

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.