This disclosure provides systems, methods, and apparatus related to an ultrasonic microphone and an ultrasonic acoustic radio. In one aspect a system includes a transmitter and a receiver. The receiver comprises a membrane. The membrane comprises a single layer or multiple layers of a two-dimensional material. The receiver is operable to receive sound waves in a frequency range, with the frequency range being the ultrasonic frequency range.

Systems are disclosed relating to a mobile device mounted to a welding helmet such that a wearer of the welding helmet can see a display of the mobile device when wearing the welding helmet. In some examples, the mobile device is mounted such that a camera of the mobile device is unobscured and positioned at approximately eye level, facing the same way the wearer's eyes are facing. In some examples, the simulated training environment may be presented to the user via the display screen of the mobile device, using images captured by the camera of the mobile device, when the mobile device is so mounted to the welding helmet.

An information processing apparatus according to an embodiment of the present technology includes a light source section, a detector, and a determination section. The light source section irradiates light onto a body site of a user. The detector includes a plurality of light detectors and outputs a plurality of detection signals on the basis of reflected light that is reflected off the body site. The determination section determines a movement of the user on the basis of information regarding a speckle generated due to the light being irradiated onto the body site, the information regarding a speckle being included in the plurality of detection signals.

An in-air gesture control method based on visible light signals, which transmits light signals through a display device and collects its light signals reflected by hand, and after analysis, realizes gesture recognition; the transmitted light signals are in the visible light band; which can realize the gesture recognition and control on mobile devices without modifying hardware and a visible light-based gesture recognition system on commercial mobile devices; compared with the existing gesture recognition methods on commercial mobile devices, the invention avoids special hardware modification, that is, it does not require any additional components on the mobile device, such as a depth camera, and protects the user's privacy well.

An information processing device comprising a projection control unit that controls projection of drawing information, the projection being performed by a projection device, on a basis of ratio information between a first distance and a second distance, the first distance being acquired from sensing information regarding a drawing tool and being from a reference point to the drawing tool, and the second distance being from the reference point to an intersection point between a straight line connecting the reference point with the drawing tool and a calibration plane.

To enables you to take animations in a virtual space an animation production system comprising: a virtual camera that shoots a character placed in a virtual space; a user input detection unit that detects an input of a user from at least one of a head mounted display and a controller which the user mounts; a character control unit that controls an action of the character in response to the input; and a preset storage unit that stores an expression of the character, wherein the character control unit sets the expression corresponding to the input that does not affect the action of the character to the character.

A position indicating device includes a housing in which an electronic pen including a pen tip is mountable, a force sense generator configured to generate a force sense, and a processor configured to control the force sense generator to generate the force sense when, with the electronic pen mounted in the housing, a distance between a position of the pen tip of the electronic pen in a virtual reality space and an object in the virtual reality space is equal to or less than a predetermined value.

A head-worn computer includes a camera system positioned to capture a surrounding environment in front of a user, a processor that identifies a position of a plurality of light emitters mounted on a hand-held controller from images captured by the camera system and tracks the position of the plurality of light emitters as the hand-held controller moves in the surrounding environment and interprets the tracked position as positional changes of the hand-held controller. The processor uses the position of the plurality of light emitters as markers in three dimensional space, the markers used as an anchor for virtual content presented in a see-through display of the head-worn computer.

A method for displaying video on a user device may include detecting a beacon, determining a location of the user device, detecting a first orientation of the user device by one or more first motion accelerometers, detecting a second orientation of the user device by one or more second motion accelerometers, receiving beacon location information, comparing at least one of the first orientation and the second orientation to the beacon location information, based on the comparing at least one of the first orientation and the second orientation to the beacon location information, creating a connection to the camera, requesting video from the camera by the user device, receiving the video captured by the camera, displaying a first window on a display of the user device, and displaying the video captured by the camera on the display of the user device.

Managing multiple devices, such as tracking beacons, is challenging, especially as the number of beacons increases. A beacon and a charging station are provided for managing the settings of the beacons. The beacon includes a display with a graphical user interface (GUI) for updating settings. The charging station includes charging ports and a display with a GUI for updating beacon settings.