Abstract: Disclosed are devices, methods, systems, media, and other implementations that include a method comprising accessing during execution of a process a memory element, determining whether data stored in the accessed memory element includes security data representative of locations that, if accessed, indicate a potential system violation condition, determining, in response to a determination that the accessed memory element includes the security data, whether execution of the process involves access of one or more memory locations in the accessed memory element containing the security data, and performing one or more remedial actions in response to a determination that the one or more memory locations in the memory element containing the security data are being accessed.

Abstract: An eye-tracking system may include a light source to emit infrared (IR) light. A waveguide may include an input coupler. A scanner may be to direct the infrared (IR) light to the input coupler, which may be configured to direct the infrared (IR) light to exit the waveguide toward an eyebox region for eye-tracking. The scanner may be to direct visible light to the input coupler. The input coupler may be to direct the visible light toward the eyebox region for display as a virtual image. A sensor may be to generate an imaging signal when infrared (IR) light impinges upon the sensor via the scanner and the input coupler.

Abstract: An eye-tracking system may include a light source to emit infrared (IR) light. A waveguide may include an input coupler. A scanner may be to direct the infrared (IR) light to the input coupler, which may be configured to direct the infrared (IR) light to exit the waveguide toward an eyebox region for eye-tracking. The scanner may be to direct visible light to the input coupler. The input coupler may be to direct the visible light toward the eyebox region for display as a virtual image. A sensor may be to generate an imaging signal when infrared (IR) light impinges upon the sensor via the scanner and the input coupler.

Abstract: An aspect of the present disclosure describes an apparatus for non-invasive blood pressure monitoring that includes a plurality of pressure sensors, a plurality of sensor interfaces coupling the plurality of pressure sensors to at least one blood flow line disposed exterior from a patient, a pump for artificially generating blood flow through the at least one blood flow line, and a processor configured to receive pressure sensor measurements from the plurality of pressure sensors and generate a patient blood pressure estimation from the combined pressure sensor measurements.

Abstract: Image light is generated with a display light source. The image light is visible. An infrared light source emits infrared light. A scan directs the image light and the infrared light to an input coupler of a display waveguide and the display waveguide presents the image light to an eyebox region as a virtual image.

Abstract: Disclosed are methods, systems, devices, media, circuits, and other implementations, including a method that includes generating for a code block of a process executing on a controller-based device one or more code block copies defined in a virtual address space of the controller-based device, with the code block of the process being stored in a particular segment of a physical address space of the controller-based device, and with the code block configured to separately map to each of the one or more of the code block copies in the virtual address space. The method further includes processing at least a portion of one of the one or more code block copies defined in the virtual address space when the corresponding code block of the process is to be processed.

Abstract: There is provided a photonic integrated circuit configured for low-coherence interferometry and in-field sensing. The photonic integrated circuit can include an opto-coupler that has a substrate substantially transparent to a specified wavelength of light and a waveguide configured to route a light beam having a center wavelength at the specified wavelength. The opto-coupler further includes a mirror disposed at an angle, and the mirror is disposed on an angled surface of the substrate, the angled surface being proximate to an output end of the waveguide. The opto-coupler further includes a beam forming element configured to collect light reflected from the mirror, and the waveguide and the mirror are integrated within the substrate.

Abstract: A near-eye imaging system includes a light source, a waveguide, a scanner, and a sensor. The light source is configured to emit light. The waveguide includes an output coupler. The scanner is configured to direct the light to the output coupler at varying scan angles. The waveguide confines the light to guide the light to the output coupler. The output coupler has negative optical power and is configured to direct the light to exit the waveguide as expanding illumination light toward an eyebox region. The sensor is configured to generate a tracking signal in response to returning light incident on the sensor via the scanner and via the output coupler.

Abstract: An eye-tracking method includes enabling at least one light source of an array of light sources to emit non-visible light to illuminate an eye. The method also includes obtaining at least one image of the eye while the at least one light source is enabled. A position of the eye may then be determined based on a position of the at least one light source within the array of light sources in response to determining that the at least one image indicates a bright pupil condition when the at least one light source was enabled.

Abstract: A near-eye imaging system includes a light source, a waveguide, a scanner, and a sensor. The light source is configured to emit light. The waveguide includes an output coupler. The scanner is configured to direct the light to the output coupler at varying scan angles. The waveguide confines the light to guide the light to the output coupler. The output coupler has negative optical power and is configured to direct the light to exit the waveguide as expanding illumination light toward an eyebox region. The sensor is configured to generate a tracking signal in response to returning light incident on the sensor via the scanner and via the output coupler.

Abstract: While a compiler compiles source code to create an executable binary, code is added into the compiled source code that, when executed, identifies and stores in a metadata table base and bounds information associated with memory allocations. Additionally, additional code is added into the compiled source code that performs memory safety checks during execution. This updated compiled source code automatically determines a safety of memory access requests during execution by performing an out-of-bounds (OOB) check using the base and bounds information retrieved and stored in the metadata table. This enables the identification and avoidance of unsafe memory operations during the implementation of the executable by a GPU.

Abstract: A plano-concave optical layer is fabricated based on an optical-mechanical fit profile. A concave-side of the plano-concave optical layer and a base curvature provide an optical power that matches the optical power from prescription lenses of eyeglasses.

Abstract: Embodiments of the present disclosure relate to apparatus, systems, and methods for detection and differentiation of selected hydrocarbon gases in a target gas composition. The apparatus comprises a sensing unit; a housing comprising a first housing portion and a second housing portion, the first housing portion for receiving a linear actuator, the linear actuator operatively coupleable to the sensing unit proximal to the inlet, and the second housing portion for receiving at least a portion of the inlet end of the sensing unit and comprising at least one chamber and a closure member housed within the second housing portion and adjacent the inlet, the closure member actuatable between a closed state and an open state by the linear actuator; wherein the at least one chamber is in fluid communication with the inlet when the closure member is in the open state.

Abstract: A head mounted display includes a display layer, an array of light sources, a first optical combiner, and a second optical combiner. The array of light sources are configured to be selectively enabled to emit non-visible light to illuminate a fundus of an eye. The first optical combiner is configured to receive reflected non-visible light that is reflected by the eye, direct a first component of the reflected non-visible light to a first camera to generate an image of the eye, and pass a second component of the reflected non-visible light. The second optical combiner is configured to receive a fundus imaging light responsive to the second component of the reflected non-visible light, and to direct the fundus imaging light to a second camera to generate an image of the fundus.

Abstract: A volumetric depth image is captured. The volumetric depth image includes a front surface of a prescription lens, a back surface of the prescription lens, and a cornea of an eye of a wearer of the prescription lens. Lens-to-eye data is determined from the volumetric depth image. The lens-to-eye data includes measurements of the prescription lens with respect to the eye. A three-dimensional (3D) optical-mechanical fit profile is generated or the wearer based on the lens-to-eye data.

Abstract: A fundus illumination system includes an array of light sources, a first optical combiner, and a second optical combiner. The array of light sources are configured to be selectively enabled to emit non-visible light to illuminate a fundus of an eye. The first optical combiner is configured to receive reflected non-visible light that is reflected by the eye, direct a first component of the reflected non-visible light to a first camera to generate an image of the eye, and pass a second component of the reflected non-visible light. The second optical combiner is configured to receive a fundus imaging light responsive to the second component of the reflected non-visible light, and to direct the fundus imaging light to a second camera to generate an image of the fundus.

Abstract: A distortion profile is based on user lens data and a selected optical-mechanical profile of a selected head mounted device. The user lens data is associated with prescription lenses worn by the user. A prescription optical layer is fabricated based on the distortion profile for the selected head mounted device.

Abstract: While a compiler compiles source code to create an executable binary, code is added into the compiled source code that, when executed, identifies and stores in a metadata table base and bounds information associated with memory allocations. Additionally, additional code is added into the compiled source code that performs memory safety checks during execution. This updated compiled source code automatically determines a safety of memory access requests during execution by performing an out-of-bounds (OOB) check using the base and bounds information retrieved and stored in the metadata table. This enables the identification and avoidance of unsafe memory operations during the implementation of the executable by a GPU.

Abstract: While a compiler compiles source code to create an executable binary, code is added into the compiled source code that, when executed, identifies and stores in a metadata table base and bounds information associated with memory allocations. Additionally, additional code is added into the compiled source code that enables hardware to determine a safety of memory access requests during an implementation of the compiled source code by performing an out-of-bounds (OOB) check in hardware using the base and bounds information stored in the metadata table. This enables the identification and avoidance of unsafe memory operations during the implementation of the executable by a GPU.

Abstract: Sensor data is captured with a sensor. The sensor data includes a lens-position of a prescription lens relative to a reference point of an optical coherence tomography (OCT) system. A mirror of a reference arm of the OCT system is positioned at an optical pathlength between an eye region of the prescription lens based at least in part on the sensor data. An OCT signal is generated while the mirror is positioned at the optical pathlength. At least one depth profile is generated that includes the prescription lens and the eye region.