Abstract: Described herein are embodiments of systems and methods that utilize images of a user's face to detect fever and intoxication. One embodiment of a system to detect fever includes first and second inward-facing head-mounted cameras that are located less than 5 cm from a user's face, are sensitive to wavelengths below 1050 nanometer, and are configured to capture images of respective first and second regions on the user's face. The system also includes a computer that calculates, based on baseline images captured with the cameras while the user did not have a fever, a baseline pattern of hemoglobin concentrations at regions on the face. The computer also calculates, based on a current set of images captured with the cameras, a current pattern of hemoglobin concentrations at the regions, and detects whether the user has a fever based on a deviation of the current pattern from the baseline pattern.

Abstract: Disclosed herein is a doorway that facilitates passage from an inside to an outside, and which includes a barrier that moves between opened and closed positions based on commands sent by a computer. Sensors measure signals indicating whether a first user is on the outside, and whether a second user on the inside. The computer detects that the first user is on the outside and receives, from a device of the first user, an indication indicating the first user is healthy. The computer detects whether the second user is on the inside, and commands the barrier to move to the opened position if: (i) the second user is not on the inside, or (ii) the second user is on the inside and the computer receives, from a device of the second user, an indication indicating the second user is healthy.

Abstract: Systems and methods for detecting an occurrence of a transient ischemic attack (TIA). In one embodiment, a device is utilized to measure first and second signals indicative of photoplethysmogram signals at first and second regions on the left and right sides of a user's head (PPGSL and PPGSR, respectively). A computer detects the occurrence of a TIA based on PPGSL and PPGSR that exhibit a pattern that involves the following: (i) an asymmetry between PPGSL and PPGSR, which is below a threshold, during a first period spanning more than a day; (ii) an asymmetry between PPGSL and PPGSR, which exceeds the threshold, during a second period following the first period and spanning between 5 and 180 minutes; and (iii) an asymmetry between PPGSL and PPGSR, which falls below the threshold, during a third period following the second period.

Abstract: Described herein are embodiments of systems and methods for calculating glucose in a non-invasive manner using head-mounted sensors. In one embodiment, a system that calculates blood glucose levels includes a head-mounted contact photoplethysmography device that measures a signal indicative of a photoplethysmogram signal (PPG signal) at a first region comprising skin on a user's head, and a head-mounted camera configured to capture images of a second region comprising skin on the user's head. The system also includes a computer that identifies, based on the PPG signal, times of systolic notches and times of systolic peaks, and calculates the blood glucose level based on differences between a first subset of the images taken during the times of systolic notches and a second subset of the images taken during the times of systolic peaks. Optionally, the photoplethysmography device and the camera are couple to smartglasses worn on the user's head.

Abstract: A hygienic in-vehicle head-mounted display (HMD) includes: a head piece, a stiff module, and a lock that connects and disconnects the head piece and the stiff module. The head piece is in direct physical contact with the passenger's face. The stiff module includes a display module that projects video into eyes of a passenger of a vehicle while the HMD is worn by the passenger. In one embodiment, a storage module may be used to stow the stiff module. Optionally, the storage module releases the stiff module responsive to the head piece being connected to the stiff module. In another embodiment, a processor instructs the display module to project video responsive to an indication that the head piece and the stiff module are connected, and instructs the display module not to project the video, responsive to an indication that the head piece and the stiff module are not connected.

Abstract: Described herein are embodiments of systems and methods that utilize temperature measurements taken with head-mounted sensors as well as images of a user's face to detect fever and/or intoxication. One embodiment of a system to detect fever includes a first head-mounted temperature sensor that measures skin temperature (Tskin) at a first region on a user's head, a second head-mounted temperature sensor that measures a temperature of the environment (Tenv), and a computer. The computer receives images of a second region on the user's face, captured by a camera sensitive to wavelengths below 1050 nanometer, and calculates, based on the images, values indicative of hemoglobin concentrations at three or more regions on the user's face. The computer can then detect whether the user has a fever based on Tskin, Tenv and the values.

Abstract: Described herein are embodiments of systems and methods that utilize images of a user's face to detect fever and intoxication. One embodiment of a system to detect fever includes first and second inward-facing head-mounted cameras that are located less than 5 cm from a user's face, are sensitive to wavelengths below 1050 nanometer, and are configured to capture images of respective first and second regions on the user's face. The system also includes a computer that calculates, based on baseline images captured with the cameras while the user did not have a fever, a baseline pattern of hemoglobin concentrations at regions on the face. The computer also calculates, based on a current set of images captured with the cameras, a current pattern of hemoglobin concentrations at the regions, and detects whether the user has a fever based on a deviation of the current pattern from the baseline pattern.

Abstract: Head-mounted displays (HMDs) are being used more and more for entertainment and work while traveling in vehicles. However, the use of an HMD can be risky in the event of a collision. This disclosure describes a safety system comprising a head-mounted display (HMD) configured to be worn on a passenger's head while traveling in an automated on-road vehicle, a folded airbag, fixed to the HMD, and an inflation system fixed to the vehicle and connected to the folded airbag through a flexible hose. The flexible hose is configured to convey as generated by the inflation system. The system may further detach the flexible hose from the inflation system after the inflation, such that the airbag is no longer connected to the inflation system shortly after the inflation.

Abstract: Detecting a respiratory tract infection (RTI) based on changes in coughing sounds, which can provide an early warning of infection with a disease like COVID-19, as well as indications of its progression and severity. In one embodiment, the system includes smartglasses, with sensors mounted thereto, which include an acoustic sensor mounted at a fixed position relative to a user's head, and a movement sensor. A computer receives current measurements of the user, taken with the sensors, while there were head movements that characterize coughing, and also earlier measurements of the user, taken with the sensors, while the user had a known extent of the RTI and while there were head movements that characterize coughing. The computer detects a change relative to the known extent of the RTI based on a difference between the current measurements and the earlier measurements.

Abstract: Disclosed herein are systems and methods for detecting a physiological response using different types of photoplethysmography sensors. Examples of physiological responses that may be detected include an allergic reaction, a stroke, a migraine, stress, certain emotional responses, manifestation of pain, and blood pressure. In one embodiment, a head-mounted contact photoplethysmography device measures a signal indicative of photoplethysmogram signal at a first region that includes exposed skin on a user's head (PPG signal). A camera, located more than 10 mm away from the user's head, captures images of a second region that includes exposed skin on the user's head. A computer detects the physiological response based on: (i) imaging photoplethysmogram signals (iPPG signals) recognizable in the images, and (ii) correlations between the PPG signal and the iPPG signals.

Abstract: Systems for calculating extent of congestive heart failure (CHF) and/or identifying exacerbation of CHF. In one embodiment, a system includes smartglasses configured to be worn on a user's head, and an inward-facing camera and a sensor, both physically coupled to the smartglasses. The inward-facing camera is mounted more than 5 mm away from the head and captures images of an area comprising skin on the user's head, which is larger than 4 cm{circumflex over (?)}2. The sensor measures a signal indicative of a respiration rate of the user (respiration signal). The system also includes a computer that calculates the extent of CHF based on: a facial blood flow pattern recognizable in the images, and respiration rate recognizable in the respiration signal.

Abstract: One embodiment of an unmanned carrier for carrying urban manned vehicles includes a computer, a motorized lift, an autonomous-driving control system, and a safety frame. The computer synchronizes pick-up of manned vehicles by the unmanned carrier; wherein each manned vehicle is an autonomous on-road vehicle that transports one or more occupants in a compartment, is authorized by law to drive in a residential neighborhood, and is unauthorized by law to drive on the highway on its own because it is not safe enough for highway speed. The motorized lift enables the manned vehicles to get on and get off the unmanned carrier without human intervention. The autonomous-driving control system navigates the unmanned carrier autonomously on a highway. And the safety frame protects the occupants who sit in the carried manned vehicles during a collision at highway speed.

Abstract: Detecting a respiratory tract infection (RTI) based on changes in coughing sounds, which can provide an early warning of infection with a disease like COVID-19, as well as indications of its progression and severity. In one embodiment, the system includes smartglasses, with sensors mounted thereto, which include an acoustic sensor mounted at a fixed position relative to a user's head, and a movement sensor. A computer receives current measurements of the user, taken with the sensors, while there were head movements that characterize coughing, and also earlier measurements of the user, taken with the sensors, while the user had a known extent of the RTI and while there were head movements that characterize coughing. The computer detects a change relative to the known extent of the RTI based on a difference between the current measurements and the earlier measurements.

Abstract: A Shock-Absorbing Energy Dissipation Padding (SAEDP) is coupled to the compartment of an autonomous on-road vehicle, and is located, during normal driving, at eye level in front of an occupant who sits in a front seat of the vehicle. The vehicle further includes a stiff element that supports the SAEDP and resists deformation during collision in order to reduce compartment intrusion. The stiff element is located, during normal driving, at eye level between the SAEDP and the outside environment. Optionally, a camera takes video of the outside environment in front of the occupant, and a computer generates for the occupant a representation of the outside environment.

Abstract: A large mirroring element is located in front of an occupant who sits in a front seat of an autonomous on-road vehicle. The large mirroring element provides the effect of reflecting light arriving from the occupant's direction. Optionally, a camera takes video of the outside environment in front of the occupant, sends the video to a computer that generates a representation of the outside environment in front of the occupant at eye level, and a display located in front of the occupant presents the representation to the occupant.

Abstract: An autonomous on-road vehicle having an outer nontransparent Shock-Absorbing Energy Dissipation Padding (SAEDP). In one embodiment, the SAEDP is mounted, during normal driving, to the front side of the vehicle at eye level of an occupant who sits in a front seat of the vehicle. A camera is mounted to the vehicle and takes video of the outside environment in front of the occupant. And a computer generates a representation of the outside environment at eye level for the occupant.

Abstract: Systems for calculating extent of congestive heart failure (CHF) and/or identifying exacerbation of CHF. In one embodiment, a system includes smartglasses configured to be worn on a user's head, and an inward-facing camera and a sensor, both physically coupled to the smartglasses. The inward-facing camera is mounted more than 5 mm away from the head and captures images of an area comprising skin on the user's head, which is larger than 4 cm{circumflex over (?)}2. The sensor measures a signal indicative of a respiration rate of the user (respiration signal). The system also includes a computer that calculates the extent of CHF based on: a facial blood flow pattern recognizable in the images, and respiration rate recognizable in the respiration signal.

Abstract: A safety system that provides specific warnings to an occupant of a vehicle engaged in a certain activity that can cause an adverse outcome in an event of a Sudden Decrease in Ride Smoothness (an SDRS event). The safety system includes a sensor that takes measurements of the vehicle compartment, and a computer that estimates, based on the measurements, whether the occupant of the vehicle is engaged in a certain activity that can lead to an adverse outcome in case of an SDRS event. Responsive to receiving an indication indicative of an imminent SDRS event and estimating that the occupant is engaged in the certain activity, the computer provides a specific warning to the occupant. The specific warning describes a specific action related to the certain activity, which the occupant should take.

Abstract: Described herein are embodiments of systems and a method to identify orthostatic hypotension and postural-orthostatic tachycardia syndrome. One system includes a head-mounted device configured to measure photoplethysmographic signal (PPG signal) at a region on a user's head, and a head-mounted camera configured to capture images indicative of the user's posture. Additionally, the system includes a computer that calculates systolic and diastolic blood pressure values based on the PPG signal, and identifies orthostatic hypotension based on a drop of systolic blood pressure below a first threshold, and/or a drop of diastolic blood pressure below a second threshold, within a predetermined duration from a transition in the posture from supine to sitting posture, or from sitting to standing posture.

Abstract: A hygienic in-vehicle head-mounted display (HMD) includes: a head piece, a stiff module, and a lock that connects and disconnects the head piece and the stiff module. The head piece is in direct physical contact with the passenger's face. The stiff module includes a display module that projects video into eyes of a passenger of a vehicle while the HMD is worn by the passenger. In one embodiment, a storage module may be used to stow the stiff module. Optionally, the storage module releases the stiff module responsive to the head piece being connected to the stiff module. In another embodiment, a processor instructs the display module to project video responsive to an indication that the head piece and the stiff module are connected, and instructs the display module not to project the video, responsive to an indication that the head piece and the stiff module are not connected.