Abstract: Examples of the disclosure relate to at least apparatus, methods, and computer programs, configured to control capture of two images of an area, across which a pulse propagates, using different shutter scanning directions. Either the images are converted into pulse-phase maps of the area and a pulse-phase difference map obtained which identifies differences between the pulse-phase maps of the area, or a colour difference map is obtained which identifies differences between the two images and the colour difference map is converted into a pulse-phase difference map. A shutter-time difference map is obtained which identifies differences between capture times of corresponding locations in the two images. Using the shutter-time difference map, the pulse-phase difference map is corrected to obtain a map of pulse-phase changes which have occurred over a duration of a shutter scan.

Abstract: A method, apparatus and computer program are described to determine a configuration of a reconfigurable screen of a user device, identify potentially problematic sources of reflection from a scene around a user device based, at least in part, on the determined configuration, and compensate for the potentially problematic sources of reflection.

Abstract: An apparatus, method and computer program is disclosed. The apparatus may comprise means for receiving video data representing a video recording of at least one input made by a user at a user device; receiving audio data representing an audio recording of at least one audio input made by the user at the user device; determining whether there is a correspondence between the at least one input represented in the video data and the at least one audio input represented in the audio data; and providing verification based on the determination.

Abstract: Dust mitigation techniques are disclosed. An example apparatus includes a first component coupled in a movable relationship with a second component. The first component or the second component includes a recess accessible through an aperture. The apparatus also includes a brush disposed at the aperture and comprising fibers configured to prevent intrusion of dust into the recess. The apparatus also includes a vibration device configured to deliver a vibrational stimulus to the brush, wherein the vibration device activates a dust collection mode in response to a first movement of the first component relative to the second component and activates a dust shedding mode in response to a second movement of the first component relative to the second component.

Abstract: Examples of the disclosure relate to at least apparatus, methods, and computer programs, configured to control capture of two images of an area, across which a pulse propagates, using different shutter scanning directions. Either the images are converted into pulse-phase maps of the area and a pulse-phase difference map obtained which identifies differences between the pulse-phase maps of the area, or a colour difference map is obtained which identifies differences between the two images and the colour difference map is converted into a pulse-phase difference map. A shutter-time difference map is obtained which identifies differences between capture times of corresponding locations in the two images. Using the shutter-time difference map, the pulse-phase difference map is corrected to obtain a map of pulse-phase changes which have occurred over a duration of a shutter scan.

Abstract: Examples of the disclosure relate to apparatus, methods and computer programs for calibrating machine learning systems by using images captured by an imaging device. The apparatus can comprise means for: enabling at least one of a first device or second device to display one or more calibration images, the first device comprising an embedded machine learning system wherein the one or more calibration images are for calibrating the embedded machine learning system. The apparatus can also comprise means for controlling an imaging device to capture, at least part of, the one or more calibration images, wherein the imaging device is provided within the first device, and using the one or more calibration images captured by the imaging device to calibrate the embedded machine learning system of the first device.

Abstract: Examples of the disclosure relate to an apparatus for enabling LiDAR measurements. The apparatus comprises means for detecting relative movement between at least one object and at least one LiDAR device wherein the at least one LiDAR device is configured to provide a measurement location projection pattern. The apparatus also comprises means for predicting a location of at least one area of interest of the at least one object relative to the at least one LiDAR device at a given time and adding a delay to transmission of the measurement location projection pattern. The delay is added so that one or more measurement locations of the measurement location projection pattern are incident on the at least one area of interest of the at least one object at the given time.

Abstract: A method, apparatus and computer program is described comprising: determining a configuration of a reconfigurable screen of a user device; identifying potentially problematic sources of reflection from a scene around a user device based, at least in part, on the determined configuration; and compensating for said potentially problematic sources of reflection.

Abstract: Lidar imaging techniques are disclosed. An example method includes projecting direct laser beams toward an area of interest, and projecting reflected laser beams toward the area of interest, wherein the reflected laser beams are reflected from a reflective surface disposed at a known location relative to an electronic device. The method also includes receiving light scattered in the area of interest due to the direct laser beams and the reflected laser beams. The method also includes determining signal characteristics of the detected scattered light received from the area of interest caused by both the direct laser beams and the reflected laser beams. The method also includes computing a depth map corresponding to the area of interest based on the signal characteristics.

Abstract: A GPS enabled Emergency Messaging System (GEMS) includes: Emergency Response Centers (ERC's) for defining emergency broadcast messages directed to specified geographic areas; a GPS Control Segment (CS) facility that receives messages generated by the ERC's and coordinates uplink and downlink communications with orbiting GPS satellites; a GPS Space Segment (SS) that includes the multiple orbiting GPS satellites and that receives emergency messages from the CS facility and broadcasts transmissions containing both GPS navigational information and an emergency broadcast message; and GEMS-enabled user equipment that is capable of receiving and processing broadcast emergency messages. The system permits emergency messaging data to be superimposed on the existing GPS signal structure and delivered to users with GPS receivers capable of receiving the superimposed messaging data.

Abstract: A satellite network constellation employs a technique for multicasting packets through the network according to the present invention. The network comprises plural satellites in plural orbital planes with each satellite equipped with a plurality of high-speed point-to-point full duplex radio links for inter-satellite communications. A node intending to send a multicast packet to a multicast group or a set of destination satellite nodes initially sends the packet to the orbital planes that include the group members. Once reaching the plane, in-plane routing techniques are used to forward the packet to the intended group members. If there are broken or disabled links, an alternative path is taken to forward the packet without disrupting the functioning links.

Abstract: Network configuration hierarchy information is maintained using flexible mechanisms and methods for establishing routes and transferring information between nodes in ad-hoc data communication networks using on-demand multicast and unicast techniques. Communication nodes use network topology information to build and maintain a dynamically mobile, wireless, ad-hoc network capable of efficiently routing both unicast and multicast traffic. Network nodes that facilitate the collection and distribution of network topology and routing data are dynamically selected, configured, and maintained. Network traffic overhead necessary for maintaining and distributing network routing table information is held to a minimum and efficiently distributed across the network, thereby reducing the potential for network traffic bottlenecks due to network overhead processes.

Abstract: A GPS enabled Emergency Messaging System (GEMS) includes: Emergency Response Centers (ERC's) for defining emergency broadcast messages directed to specified geographic areas; a GPS Control Segment (CS) facility that receives messages generated by the ERC's and coordinates uplink and downlink communications with orbiting GPS satellites; a GPS Space Segment (SS) that includes the multiple orbiting GPS satellites and that receives emergency messages from the CS facility and broadcasts transmissions containing both GPS navigational information and an emergency broadcast message; and GEMS-enabled user equipment that is capable of receiving and processing broadcast emergency messages. The system permits emergency messaging data to be superimposed on the existing GPS signal structure and delivered to users with GPS receivers capable of receiving the superimposed messaging data.

Abstract: To prevent the accumulation of a gas bubble at the inner end portion of a torpedo tube, exhaust gases are not discharged from an improved torpedo until after the torpedo has moved out of the torpedo tube. The improved torpedo includes a gas powered engine which rotates a hollow drive shaft to effect rotation of torpedo drive propellers in a known manner. During operation of the engine, there is a continuous flow of gas through the engine into the hollow drive shaft. When the torpedo is in the torpedo tube, gas is conducted from the hollow drive shaft through a manifold to a storage tank. Water which may accumulate in the hollow drive shaft is centrifugally slung outwardly against the side wall of the rotating drive shaft. Tubes extend through the water to a central portion of the drive shaft so that the gas can be conducted through the water in the shaft to the manifold and storage tank.