Abstract: Techniques of operating an AR system include determining hand gestures formed by a user based on a sequence of two-dimensional images through skin of the user's wrist acquired from a near-infrared camera. Specifically, an image capture device disposed on a band worn around a user's wrist includes a source of electromagnetic radiation, e.g., light-emitting diodes in the infrared (IR) wavelength band that emit the radiation into the user's wrist and an IR detector which produces the sequence of two-dimensional images of a region within a dermal layer in the user's wrist. From this sequence, gesture detection circuitry determines values of a biological flow metric, e.g., a change in perfusion index (PI) between frames of the sequence, based on a trained model that generates the metric from the sequence. Finally, the gesture detection circuitry maps the values of the biological flow metric to specific hand/finger movements that determine a gesture.

Abstract: Techniques of operating an AR system include determining hand gestures formed by a user based on a sequence of two-dimensional images through skin of the user's wrist acquired from a near-infrared camera. Specifically, an image capture device disposed on a band worn around a user's wrist includes a source of electromagnetic radiation, e.g., light-emitting diodes in the infrared (IR) wavelength band that emit the radiation into the user's wrist and an IR detector which produces the sequence of two-dimensional images of a region within a dermal layer in the user's wrist. From this sequence, gesture detection circuitry determines values of a biological flow metric, e.g., a change in perfusion index (PI) between frames of the sequence, based on a trained model that generates the metric from the sequence. Finally, the gesture detection circuitry maps the values of the biological flow metric to specific hand/finger movements that determine a gesture.

Abstract: Systems and devices for levitating interactive objects are provided. A toy formed proximate the opening, electrical circuitry configured to cause an electrical current to flow in the solenoid coil, wireless communication circuitry; and a controller coupled to the wireless communication circuitry and the electrical circuitry and configured to control the timing and amount of electrical current flowing through the solenoid coil to cause levitation or levitation-like movement of the toy wand within said opening by virtue of electromagnetic interaction with the magnetically-reactive element of the shaft portion.

Abstract: A combination speaker and lighting tower for use outdoors. The lighting tower has a base and a housing that includes at least one lamp. A rotatable coupler is used to mount a speaker unit on the tower, which allows the speaker unit to rotate in a horizontal plane. A stop is provided in the coupler to prevent the speaker unit from rotating a full 360 degrees. The speaker unit may be fixed to a specific location or allowed to oscillate back and forth. The lighting tower may be installed on a patio or anchored in the ground.