Abstract: A system for skydiving trajectory and coordination feedback for a user. The system includes a controller coupled to a plurality of sensor inputs. The controller determines a user drag through air based on input data from the plurality of sensor inputs. The controller also receives a user flightpath and determines a projected user trajectory based on the user drag. The controller also determines user drag adjustments to align the projected user trajectory with the received user flightpath. At least one of an aural, haptic, or visual feedback device is coupled to the controller to provide feedback to the user in response to the user drag adjustments.

Abstract: Systems and techniques for predictive classification in action sports are described herein. A start point for an action may be identified in a data stream including a plurality of data sets corresponding to the action. The data stream may be collected from a sensor array. Action performance features may be extracted from the data stream subsequent to the start point. The action performance features may be compared in real-time to a set of statistical models. A label may be selected for the action based on the comparison. A likelihood of success may be generated for the action based on the comparison. The label for the action and the likelihood of success may be output for display on a display device.

Abstract: Systems and techniques for accelerated pattern matching in action sports are described herein. A plurality of data sets may be collected from a data stream received from a sensor array. Each data set of the plurality of data sets may be compressed into a magnitude value. A first mean and a first standard deviation may be determined for a first set of magnitude values corresponding to a first time period. A second mean and a second standard deviation may be determined for a second set of magnitude values corresponding to a second time period. A mean ratio may be calculated for the first mean and the second mean and a standard deviation ratio may be calculated for the first standard deviation and the second standard deviation. A start point for an action may be generated by determining that the mean ratio and the standard deviation ratio are outside a threshold.

Abstract: A system for skydiving trajectory and coordination feedback for a user. The system includes a controller coupled to a plurality of sensor inputs. The controller determines a user drag through air based on input data from the plurality of sensor inputs. The controller also receives a user flightpath and determines a projected user trajectory based on the user drag. The controller also determines user drag adjustments to align the projected user trajectory with the received user flightpath. At least one of an aural, haptic, or visual feedback device is coupled to the controller to provide feedback to the user in response to the user drag adjustments.

Abstract: Apparatus and methods are provided for activity accessory including an energy harvester or generator. In an example, an activity accessory can include a first enclosure and an energy generator enclosed within the first enclosure. The energy generator can include a second enclosure. The energy generator can include a spherical magnet housed within the second enclosure and windings surrounding the second enclosure. Movement of the spherical magnet within the second enclosure can induce charge movement in the windings.

Abstract: Various systems and methods for implementing crowd gesture recognition are described herein. A system for implementing crowd gesture recognition includes an accelerometer; a gyrometer; a gesture detection circuit to: detect an air gesture performed by a user of the system based on data from the accelerometer and gyrometer; and parameterize an intensity of the air gesture; a processor subsystem to determine a transmission frequency band and a transmission strength based on the air gesture and the intensity of the air gesture; and a transducer to transmit a signal on the transmission frequency band with the transmission strength.

Abstract: Systems and techniques for a sensor network for trick classification are described herein. A first data stream may be received from a first sensor array affixed to a first free-moving body of a sporting device. A second data stream may be received from a second sensor array affixed to a second free-moving body of the sporting device. A trick region of a predetermined length of the first data stream corresponding with an occurrence of a trick may be determined using data from the first data stream. The trick may be classified using a first set of data from the first data stream corresponding with the trick region and a second set of data from the second data stream.

Abstract: Embodiments of the present disclosure provide techniques and configurations for an apparatus for identifying a maneuver of sports equipment. In one instance, the apparatus may comprise a housing to be attached to the sports equipment; two or more sensors disposed on or in the housing to sense acceleration or rotation of the sports equipment during the motion of the sports equipment, and to output motion data associated with the acceleration or rotation of the sports equipment; and circuitry disposed in the housing and coupled to the sensors to receive the motion data and to identify a maneuver performed using the sports equipment, based on the motion data. Other embodiments may be described and/or claimed.

Abstract: A method for fabricating a tunnel junction includes depositing a first electrode on a substrate, depositing a wetting layer having a thickness of less than 2 nm on the first electrode, using atomic layer deposition (ALD) to deposit an oxide layer on the wetting layer, and depositing a second electrode on the oxide layer. The wetting layer and the oxide layer form a tunnel barrier, and the second electrode includes a superconductor.

Abstract: A method for fabricating a tunnel junction includes depositing a first electrode on a substrate, depositing a wetting layer having a thickness of less than 2 nm on the first electrode, using atomic layer deposition (ALD) to deposit an oxide layer on the wetting layer, and depositing a second electrode on the oxide layer. The wetting layer and the oxide layer form a tunnel barrier, and the second electrode includes a superconductor.