Abstract: A propellant mechanism for launching a projectile comprises a propellant with a detonation point at which said propellant is initially detonated which is at one end in a forward direction closest to said projectile, such that the detonation proceeds through the propellant in a backwards direction away from the projectile. A reflecting surface is provided away from said projectile for reflecting the detonation into the forward direction towards the projectile.

Abstract: Device for interception of incoming ordnance, comprises a dispersion unit to disperse an explosive cloud in an expected path of the incoming ordnance, a proximity detector to detect proximity of the incoming ordnance in relation to the explosive cloud; and an ignition unit associated with said proximity detector that ignites the explosive cloud to disrupt the incoming ordnance.

Abstract: Techniques are disclosed for operating a time-of-flight (TOF) sensor. The TOF may be operated in a low power mode by repeatedly performing a low power mode sequence, which may include performing a depth frame by emitting light pulses, detecting reflected light pulses, and computing a depth map based on the detected reflected light pulses. Performing the low power mode sequence may also include performing an amplitude frame at least one time by emitting a light pulse, detecting a reflected light pulse, and computing an amplitude map based on the detected reflected light pulse. In response to determining that an activation condition is satisfied, the TOF may be switched to operate in a high accuracy mode by repeatedly performing a high accuracy mode sequence, which may include performing the depth frame multiple times.

Abstract: Methods for obtaining indigo dyed yarns with controlled ring dyeing are provided. Systems and devices for yarn indigo dyeing resulting in dyed yarns with homogenous color intensity are also provided.

Abstract: An electronic device associated with a respective user account presents content from another electronic device associated with a different user account. In some embodiments, a first electronic device associated with the user account of a first user establishes a connection with a second electronic device associated with the user account of a second user. Using this connection, the first electronic device and second electronic device exchange authentication keys, including authentication keys of the first electronic device, the second electronic device, and a third electronic device also associated with the user account of the second user. In some embodiments, in response to detecting an advertisement of the authentication key of the third electronic device broadcast by the third electronic device, the first electronic device initiates a process to present content received from the third electronic device.

Abstract: It is well understood in the medical industry that medical disorders can manifest as serious problems for the affected subjects, their families, and society. Today, psychiatrists, neurologists and other physicians treat these disorders with a variety of medications, many of which have significant negative side effects. The teachings provided herein are directed to a novel system and methods for treating certain neurological, psychological, psychiatric and medical disorders by delivering a “magnetic stimulation” to a subject's neural and perineural system using either a static or electromagnetic field to generate a modulated variable power multi-spectral magnetic stimulation on three axis; the modulated stimulation using methods that have predictable, controlled, modifiable, and repeatable characteristics.

Abstract: A first user of an electronic device operates the electronic device in a first mode with access to a plurality of features. The first user optionally configures the electronic device to provide permission for another user to use the electronic device in a second mode with access to a subset of the plurality of features.

Abstract: Disclosed herein are methods and systems for scanning an environment using a LIDAR system comprising one or more light sources configured to emit light, one or more rotatable light deflectors having a plurality of reflective facets to direct light emitted by the light source(s) to scan a Field of View (FOV) of the LIDAR system, and one or more optical switches having at least two states. The optical switch(es) interposed between the light source(s) and the rotatable light deflector(s) is configured to switch between the at least two states such that, in a first state, the one or more optical switches direct the emitted light towards the FOV via a first reflective facet of the plurality of reflective facets, and in a second state, the one or more optical switches direct the emitted light towards the FOV via a second reflective facet of the plurality of reflective facets.

Abstract: A display system can include a head-mounted display configured to project light to an eye of a user to display virtual image content at different amounts of divergence and collimation. The display system can include an inward-facing imaging system possibly comprising a plurality of cameras that image the user's eye and glints for thereon and processing electronics that are in communication with the inward-facing imaging system and that are configured to obtain an estimate of a center of rotation of the user's eye using cornea data derived from the glint images. The display system may render virtual image content with a render camera positioned at the determined position of the center of rotation of said eye.

Abstract: A first user of an electronic device operates the electronic device in a first mode with access to a plurality of features. The first user optionally configures the electronic device to provide permission for another user to use the electronic device in a second mode with access to a subset of the plurality of features. The first user optionally uses another electronic device to update the permissions to use the electronic device in the second mode while another user is using the electronic device.

Abstract: Device for interception of incoming ordnance, comprises a dispersion unit to disperse an explosive cloud in an expected path of the incoming ordnance, a proximity detector to detect proximity of the incoming ordnance in relation to the explosive cloud; and an ignition unit associated with said proximity detector that ignites the explosive cloud to disrupt the incoming ordnance.

Abstract: Systems and methods including a framework for migration of live data. The method may comprised, by one or more hardware processors executing program instructions, receiving, at a migration proxy of the framework, code for reading data and writing data compatible with each of a plurality of states of a migration of data in a data store, wherein a service is at least intermittently reading data from and writing data to the data store; determining, by a migration runner of the framework, to perform the migration of the data; initiating, by the migration runner, the migration of the data, wherein the migration comprises a plurality of stages; storing, as the migration progresses through the plurality of stages, and at a migration data store of the framework, a current stage of the migration; and during the migration, using the migration proxy to read data from and write data to the data store.

Abstract: A system of a server is associated with channels, a plurality of client devices subscribed to the channels, and the server includes: one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the system to perform operations comprising: receiving a system configuration change request from a client device, wherein the system configuration change request comprises a first system configuration file and channel information of a first channel; obtaining, based on the channel information, a second system configuration file that is currently deployed on client devices subscribed to the first channel; displaying, on a graphic user interface, a file comparison result between the first system configuration file and the second system configuration file; and in response to the file comparison result being verified, storing the first system configuration file in a request queue for the client devices to poll and deploy.

Abstract: An eye tracking system can include eye-tracking camera(s) configured to obtain image(s) of the eye at different exposure times or different frame rates. For example, image(s) of the eye taken with a longer exposure time can be analyzed to detect eye feature(s) such as iris or pupil features, and image(s) taken with a shorter exposure time can be analyzed to detect glints reflected from the eye. The shorter exposure images may be taken at a higher frame rate than the longer exposure images for more accurate gaze prediction based on glint analysis, e.g., to provide glint locations to subpixel accuracy. Such glint analysis may also take into account estimated location(s) of partially or totally occluded glint(s). The longer exposure images can be analyzed for pupil center, eye center of rotation, or other characteristics. The system can predict gaze direction, e.g., for foveated rendering by a wearable display system.

Abstract: An eye tracking system can include eye-tracking camera(s) configured to obtain images of the eye at different exposure times or different frame rates. For example, longer exposure images of the eye taken at a longer exposure time can show iris or pupil features, and shorter exposure, glint images can show peaks of glints reflected from the eye. The shorter exposure glint images may be taken at a higher frame rate than the longer exposure images for more accurate gaze prediction. The shorter exposure glint images can be analyzed to provide glint locations to subpixel accuracy. The longer exposure images can be analyzed for pupil center and/or center of rotation. The eye tracking system can predict gaze direction, which can be used for foveated rendering by a wearable display system. In some instances, the eye-tracking system may estimate the location of a partially or totally occluded glint.

Abstract: A method for of ultrasonically impregnating nanoparticle into the fabric is provided. Further, systems for use in ultrasonically impregnation of fabrics are also provided.

Abstract: Systems and methods including a framework for migration of live data. The method may comprised, by one or more hardware processors executing program instructions, receiving, at a migration proxy of the framework, code for reading data and writing data compatible with each of a plurality of states of a migration of data in a data store, wherein a service is at least intermittently reading data from and writing data to the data store; determining, by a migration runner of the framework, to perform the migration of the data; initiating, by the migration runner, the migration of the data, wherein the migration comprises a plurality of stages; storing, as the migration progresses through the plurality of stages, and at a migration data store of the framework, a current stage of the migration; and during the migration, using the migration proxy to read data from and write data to the data store.

Abstract: A method of managing digital entities in data repositories comprises storing one or more data objects in a non-graph data repository into one or more nodes and edges of a graph, comprising transforming an access control list (ACL) of a first data object into an ACL node and transforming a version of a second data object into a version node in a graph data repository; electronically receiving a search query associated with a user account for a shortest path between two specified nodes of the graph; executing the search query against the graph data repository to generate a result set of nodes including only nodes corresponding to most recent versions of the one or more data objects that are visible to the user account under applicable ACLs.

Abstract: Examples of an imaging system for use with a head mounted display (HMD) are disclosed. The imaging system can include a forward-facing imaging camera and a surface of a display of the HMD can include an off-axis diffractive optical element (DOE) or hot mirror configured to reflect light to the imaging camera. The DOE or hot mirror can be segmented, for example, with different segments having different angles or different optical power. The imaging system can be used for eye tracking, biometric identification, multiscopic reconstruction of the three-dimensional shape of the eye, etc. Methods for manufacturing angularly segmented optical elements are also provided. The methods can include injection molding.

Abstract: Examples of an imaging system for use with a head mounted display (HMD) are disclosed. The imaging system can include a forward-facing imaging camera and a surface of a display of the HMD can include an off-axis diffractive optical element (DOE) or hot mirror configured to reflect light to the imaging camera. The DOE or hot mirror can be segmented, for example, with different segments having different angles or different optical power. The imaging system can be used for eye tracking, biometric identification, multiscopic reconstruction of the three-dimensional shape of the eye, etc. Methods for manufacturing angularly segmented optical elements are also provided. The methods can include injection molding.