Abstract: Approaches for detecting and/or rejecting fraudulent positioning system signals at one or more positioning system receivers. The receivers may establish a time search window that may be maintained beyond a time in which a fraudulent signal is expected to move away from an authentic signal a sufficient amount so as to fall outside the time search window. Various approaches are described for updating the time signal at the receiver to maintain accuracy without acquiescing to the introduced bias of a fraudulent signal. Also, an approach for evaluation of candidate signals for consistency at one or more stationary receivers is described. Also, approaches for collective evaluation of signals provided from networked receivers are described to provide sentry receivers operative to detect and alert the presence of a fraudulent signal.

Abstract: An implantable intravascular anchor for supporting a device inside a vascular lumen, the anchor comprising a first part configured to expand when extending from a catheter, and to collapse upon retraction into said catheter; a second part for supporting the device in the lumen and a third part, proximal to the first part, and configured so that, upon release from the catheter, it expands in width to engage an interior wall of the lumen and is adapted for securing the anchor against axial movement along the lumen.

Abstract: An apparatus includes an input coupler configured to receive light excited by a light source. A near-field transducer (NFT) is positioned at a media-facing surface of a write head. A layered waveguide is positioned between the input coupler and the NFT and configured to receive the light output from the input coupler in a transverse electric (TE) mode and deliver the light to the NFT in a transverse magnetic (TM) mode. The layered waveguide comprises a first layer extending along a light-propagation direction. The first layer is configured to receive light from the input coupler. The first layer tapers from a first cross track width to a second cross track width where the second cross track width is narrower than the first cross track width. The layered waveguide includes a second layer that is disposed on the first layer. The second layer has a cross sectional area in a plane perpendicular to the light propagation direction that increases along the light propagation direction.

Abstract: An implantable device for sensing intravascular pressure, the device comprising a bulk acoustic wave (BAW) resonator arranged to be deflected by changes in intravascular fluid pressure to provide a pressure dependent sensing signal and an acoustic reflector arranged to separate the BAW resonator from the intravascular fluid and to mediate pressure from the intravascular fluid to the BAW resonator wherein the acoustic reflector comprises a layer structure arranged to provide a series of transitions in acoustic impedance between the intravascular fluid and the BAW resonator.

Abstract: A transcoding service is described that is capable of transcoding or otherwise processing content, such as video, audio or multimedia content, by utilizing one or more pipelines. A pipeline can enable a user to submit transcoding jobs (or other processing jobs) into an available pipeline, where a transcoding service (or other such service) assigns one or more computing resources to process the jobs received to each pipeline. The transcoding service and the pipelines can be provided by at least one service provider (e.g., a cloud computing provider) or other such entity to a plurality of customers. A service provider can also provide the computing resources (e.g., servers, virtual machines, etc.) used to process the transcoding jobs from the pipelines.

Abstract: Location of a device within a monitored environment with compromised communication with ranging communication nodes. Specifically, an intermediate device previously located by communication with ranging communication nodes is provided to provide a ranging signal to a device to be located. The device to be located may in turn use a ranging signal received from communication with the previously located device and one or more ranging communication nodes to resolve a location.

Abstract: Positioning, navigation, and timing (“PNT”) signals, such as those used in GNSS or LORAN systems, may be vulnerable to spoofing attacks. To generate trustworthy time and location data at a receiver, one must at least reduce the likelihood of or be capable of detecting spoofing attacks. Embodiments of the present invention, as presented herein, provide solutions for detecting spoofing of PNT signals. Various aspects incorporated into the described embodiments which assist in detecting spoofing attacks may include but are not limited to: monitoring the SNR of received PNT signals of a first modality and switching over to an alternate PNT modality when an anomaly is detected, comparing data associated with signals of multiple PNT modalities to identify a discrepancy indicative of spoofing on one of the multiple PNT modalities, and implementing a security regime to prevent spoofers from being able to produce perceivably authentic, but corrupt, replica signals of a PNT modality.

Abstract: An apparatus for compute module management is described herein. The apparatus includes a host system and a logic solution. The host system includes a central processing unit and a plurality of sensors that collect system management data from multiple interfaces. The logic solution consolidates the system management data to a single format for a single interface and transmits the system management data to a central authority. The central authority includes system management firmware for managing each compute module using the consolidated system management data.

Abstract: An apparatus and method for alleviating spiraling in boreholes is disclosed. The apparatus includes a sub, which adjusts the length of the bottom-hole assembly in response to tension/compression, flexural bending and/or torque measurements made above and below the reamer so that the drill bit and the reamer cut at the same depth rate. The sub is connected between the drill bit and the reamer. The apparatus further includes measurement devices disposed on the bottom-hole assembly above and below the reamer, which are capable of measuring the tension/compression, flexural bending and torque in the bottom-hole assembly. The method includes use of a data processor, which determines which operational output signals to supply to the sub in order to adjust its length and thereby accomplish the desired drilling rates.

Abstract: A bracing member for a door guide track (28A), the door guide track being adapted to receive a roller member (38) for a garage door roller assembly (30A), which includes a shaft (40) around which panels (27A) of a garage door are wound. The bracing member comprises a body in the form of a sleeve (10A) that defines an interior space into which a section of the door guide track is retained. The bracing member has a longitudinal opening (22) so that does not interfere with normal operation of the roller assembly. The sleeve has return sections that engage an abutment member (42) of the roller assembly and stop the bracing member from spreading when under load, for example under windy conditions. The bracing member can be affixed to a solid structure such as a garage wall and includes strengthening ribs on its exterior.

Abstract: Location of a device within a monitored environment with compromised communication with ranging communication nodes. Specifically, an intermediate device previously located by communication with ranging communication nodes is provided to provide a ranging signal to a device to be located. The device to be located may in turn use a ranging signal received from communication with the previously located device and one or more ranging communication nodes to resolve a location.

Abstract: A panel for a sectional door, the panel comprising: (a) a front wall; (b) a rear wall; (c) a top edge; (d) a bottom edge; (e) two side edges; (f) a first mounting means for mounting the panel in a pair of first guide tracks, one of each said pair of first guide tracks located adjacent each of said side edges; (g) a first rigid reinforcement member extending between said top and bottom edges to reinforce said panel against deflection; and (h) a first non-rigid restraining member located between said side edges to restrict the deflection of the panel, wherein said first non-rigid restraining member defines a path that runs adjacent to or through said first rigid reinforcement member and comprises a second mounting means for anchoring said first non-rigid reinforcement member to an anchor point.

Abstract: A transcoding service is described that is capable of transcoding or otherwise processing content, such as video, audio or multimedia content, by utilizing one or more pipelines. A pipeline can enable a user to submit transcoding jobs (or other processing jobs) into an available pipeline, where a transcoding service (or other such service) assigns one or more computing resources to process the jobs received to each pipeline. The transcoding service and the pipelines can be provided by at least one service provider (e.g., a cloud computing provider) or other such entity to a plurality of customers. A service provider can also provide the computing resources (e.g., servers, virtual machines, etc.) used to process the transcoding jobs from the pipelines.

Abstract: Determination of a signal loss profile relative to a receiver based on measured signal power of a sounding signal from a sounding transmitter having a known signal power in free space relative to the receiver. The signal loss profile may include a plurality of signal loss values corresponding to a plurality of received sounding signals at the receiver. In an embodiment, the sounding signal may comprise a GNSS navigational signal (e.g., a GPS signal). The signal loss profile may be used to extrapolate signal loss for a transmitter collocated with the receiver. In turn, the signal loss profile may be used in conjunction with a shared spectrum system to model a signal propagation from the collocated transmitter when determining allocation of a shared spectrum resource of the shared spectrum system.

Abstract: A method of operating a drill string comprises independently modifying a rotary speed of a downhole portion of the drill string relative to other downhole portions of the drill string, each of the portions comprising a plurality of drill pipe sections. The modified-speed portion of the drill string can comprise a downhole end portion of the drill string extending between a downhole drill string end and a curved portion of the borehole in which the drill string is located. The downhole end portion can be rotated at an increased speed relative to a portion of the drill string coincident with the curved portion of the borehole. Independent speed modification can be effected by incorporating one or more transmission modifier devices in the drill string, the transmission modifier device being switchable between a disengaged mode in which it transfers unmodified drill string torque and rotation, and an engaged mode in which it transmits torque and rotation along the drill string at a modified speed and torque.

Abstract: The present disclosure is directed to utilities (methods, systems, apparatuses) associated with improving the signal-to-noise ratio of a wireless signal at a receiver. It is known in the art to correlate a received signal with a replica signal generated at the receiver to improve reception. However, the inventors have determined that correlation using a replica signal which is not completely accurate may be detrimental. An improved method of correlation disclosed herein includes identifying data bits which are predictable and performing correlation with respect to those data bits while ignoring data bits which are identified as unpredictable. This method may have particular advantages in the case of receivers having attenuated reception (e.g., indoors) after losing a data connection used for receipt of assistance data.

Abstract: A method of performing a drilling operation with a drill bit through a formation. The method including defining optimal settings of drilling parameters for cleaning of a wellbore formed by the drill bit, displaying a graphical indication of the optimal settings of the drilling parameters, determining a maximum rate of penetration of the drill bit based on the optimal settings, displaying, an optimal boundary depicting the maximum rate of penetration, wherein the optimal boundary graphically matches the graphical indication of the optimal settings, displaying, on the visualization tool, an actual boundary depicting an actual rate of penetration of the drill bit, sending a signal to adjust the actual rate of penetration to match the maximum rate of penetration, receiving the signal downhole at a bottom hole assembly, and adjusting the actual rate of penetration of the drill bit using the bottom hole assembly based on the signal.

Abstract: An apparatus includes a first waveguide core extending along a light-propagation direction and configured to receive light from a light source at a combined transverse electric (TE) mode and a transverse magnetic (TM) mode. A second waveguide core is spaced apart from the first waveguide core and is configured to couple light at a TM mode to the second waveguide core. A near-field transducer (NFT) is disposed at a media-facing surface of a write head, the NFT receiving the light from the first waveguide core or the second waveguide core and heating a magnetic recording medium in response thereto.

Abstract: Wave based signals such as radio transmissions are susceptible to frequency alterations caused by the relative movement between a transmitter and a receiver. In a satellite context, the radio signals emitted by a satellite based transmitter may take on a frequency higher or lower than the actual frequency at which they are generated depending on whether the satellite is moving toward or away from the receiver, respectively. By calculating the theoretical frequency shift (Doppler shift) that should occur if a signal travels directly from a satellite to a receiver, the actual frequency of the signal as received can be used to determine if the signal's integrity is sufficient or if it has been compromised by some sort of interference or malfunction.

Abstract: Data bandwidth reduction in positioning system signals. Specifically, a first, relatively easily acquired signal may be analyzed to determine if and/or to what extent to decimate a second signal. The second signal may comprise a higher encoded data rate (e.g., a chip rate). In turn, decimation of the second signal based on characteristics of the first signal may allow for more efficient processing of the second signal.