In certain embodiments, a sensing and tracking system detects objects, such as user input devices or peripherals, and user interactions with them. A representation of the objects and user interactions are then injected into the virtual reality environment. The representation can be an actual reality, augmented reality, virtual representation or any combination. For example, an actual keyboard can be injected, but with the keys pressed being enlarged and lighted.

A fingerprint sensing system for sensing a finger surface of a finger, comprising: a plurality of pixel elements, each pixel element in the plurality of pixel elements comprising: a photo-sensitive element configured to provide a current including a fingerprint signal current component and a common-mode signal current component; and an integrating capacitor including a first electrode coupled to the photo-sensitive element for receiving the current provided by the photo-sensitive element, and a second electrode; and a current source arrangement coupled to the first electrode of the integrating capacitor of each pixel element in the plurality of pixel elements.

A fingerprint sensing system for sensing a finger surface of a finger, comprising: a plurality of pixel elements, each pixel element in the plurality of pixel elements comprising: a photo-sensitive element configured to provide a current including a fingerprint signal current component and a common-mode signal current component; and an integrating capacitor including a first electrode coupled to the photo-sensitive element for receiving the current provided by the photo-sensitive element, and a second electrode; and a current source arrangement coupled to the first electrode of the integrating capacitor of each pixel element in the plurality of pixel elements.

A touch frame assembly and an interactive white board are provided. The touch frame assembly includes: an infrared touch frame, including a frame body and a PCB assembly arranged in the frame body; a glass cover plate, located on an inner side of the PCB assembly; a fixing structure configured to fix the glass cover plate to the infrared touch frame, wherein the glass cover plate controls an inward concave of the glass cover plate through a curvature of the frame and/or the fixing structure.

A touch frame assembly and an interactive white board are provided. The touch frame assembly includes: an infrared touch frame, including a frame body and a PCB assembly arranged in the frame body; a glass cover plate, located on an inner side of the PCB assembly; a fixing structure configured to fix the glass cover plate to the infrared touch frame, wherein the glass cover plate controls an inward concave of the glass cover plate through a curvature of the frame and/or the fixing structure.

Generating interactive in-air images, by emitters emitting light pulses along an in-air detection plane, light detectors, lenses configured such that there is a particular angle of entry at which each detector receives maximal light intensity when pulses enter a lens corresponding to the detector at the particular angle of entry, and there are target positions in the detection plane, associated with emitter-detector pairs, whereby for each emitter-detector pair, when an object is located at the target position, then pulses emitted by the emitter are reflected by the object into the lens corresponding to the detector at the particular angle of entry, a projector projecting an image that appears, to a user suspended in the detection plane, and a processor identifying locations of the object in the detection plane and mapping the identified locations to corresponding locations in the image, to register user interactions with the image.

A gesture recognition system and a gesture recognition method are provided. The gesture recognition system includes a fingerprint sensor and a processing circuit. The processing circuit obtains a first fingerprint image and a second fingerprint image through the fingerprint sensor. The processing circuit obtains a plurality of first coordinate parameters of a plurality of first coordinate points in the first fingerprint image, and obtains a plurality of second coordinate parameters of a plurality of second coordinate points in the second fingerprint image. The first coordinate points of the first fingerprint image and the second coordinate points of the second fingerprint image respectively have a plurality of grayscale values corresponding to each other. The processing circuit determines a gesture operation according to the first coordinate parameters and the second coordinate parameters.

A gesture recognition system and a gesture recognition method are provided. The gesture recognition system includes a fingerprint sensor and a processing circuit. The processing circuit obtains a first fingerprint image and a second fingerprint image through the fingerprint sensor. The processing circuit obtains a plurality of first coordinate parameters of a plurality of first coordinate points in the first fingerprint image, and obtains a plurality of second coordinate parameters of a plurality of second coordinate points in the second fingerprint image. The first coordinate points of the first fingerprint image and the second coordinate points of the second fingerprint image respectively have a plurality of grayscale values corresponding to each other. The processing circuit determines a gesture operation according to the first coordinate parameters and the second coordinate parameters.

An electronic device includes a housing, a display at least partially within the housing, a cover positioned over the display and defining an input surface of the electronic device, a motion sensing system configured to detect a motion of the electronic device, and a touch sensor configured to detect, within a time window after the motion of the electronic device is detected, a contact of an input member of a user on the input surface of the electronic device. The electronic device is configured to determine, for a time prior to the detection of the contact, a relative motion between the input member and the input surface. In accordance with a determination that a characteristic of the relative motion satisfies a threshold condition, the electronic device may determine a second input location based at least in part on the location of the contact and the relative motion.

A function key module of a game controller and a game controller are provided. The function key module includes a key housing, a lens component, a hollow packaging board, a circuit board, a flat cable, and a bottom casing. The flat cable is fixedly connected to the bottom casing. The circuit board is electrically connected to the flat cable, and the hollow packaging board is arranged above the circuit board. The lens component is arranged above the hollow packaging board. The key housing is fixedly connected to the bottom casing. The circuit board is provided with an OFN module, an infrared LED light source module, and a photosensitive array module. The OFN module, the infrared LED light source module, and the photosensitive array module are electrically connected to each other.