Abstract: The present disclosure describes aspects of a vehicle-based beacon mode for wireless electric vehicle charging. In some aspects, a circuit for receiving wirelessly transferred power includes a coil connected to boost circuitry configured to convert received power to a form suitable for storage. The circuit also includes beacon circuitry connected to a voltage source that, in combination with portions of the boost circuitry, enables current to be driven into the coil to generate a beacon signal. Based on this beacon signal, a base charging unit can detect the presence of the circuit and initiate the wireless transmission of power to the circuit without additional out-of-band communication. Further, the beacon circuitry may be compatible with, or protected from, current of the received power such that the circuit can seamlessly transition from generating the beacon signal to converting the received power without active reconfiguration, synchronization, or state control.

Abstract: Methods, systems, and apparatuses, including electrical circuitry, are described for auto-negotiation. Active cables, active backplanes, and line cards may include one or more instances of electrical circuitry and/or integrated circuits that intercept advertisements of standard auto-negotiation protocol signaling from an initiating device for establishment of communication links with a receiving device. Auto negotiation information in the intercepted signaling may be translated and encoded into signaling in accordance with the capabilities of the receiving device. Active cables and active backplanes may also include one or more connection components between instances of electrical circuitry and/or integrated circuits to provide high-speed transmission of data packets encapsulating the auto-negotiation information in a format that differs from the standard auto-negotiation protocol.

Abstract: An antenna for supporting a wireless system, which can in one example, be operable in two industrial, scientific and medical (“ISM”) bands, may include a first radiator and a second radiator, and a single feed transmission section coupled to the first radiator and the second radiator. The antenna can, for example, be formed of a unitary planar structure. The antenna may be configured to fit within a chassis, which in one example, can be a chassis for a wireless receiver in a microphone.

Abstract: Techniques for wirelessly transferring energy to a vehicle are disclosed. An example method for wirelessly transferring energy to a vehicle according to the disclosure includes detecting a ripple frequency on a transmitter coil circuit, such that the ripple frequency is associated with a vehicle switch mode controller frequency of a switch mode controller in the vehicle, and providing an electrical current to a coil in the transmitter coil circuit based at least in part on the ripple frequency.

Abstract: Systems and methods are described for a ferrite arrangement that mitigates dimensional-tolerance effects on performance of a wireless charging pad, such as a WEVC pad. These systems and methods include a power-transfer structure having ferrite bars arranged to form ferrite strips in a staggered pattern to provide a path for magnetic flux induced by a magnetic field. The staggered pattern includes a series of ferrite strips that alternate defined starting-point locations at opposing sides of the power-transfer structure. Ending-point locations of the ferrite strips are not defined, but are based on an accumulation of lengthwise dimensional tolerances of the ferrite bars used to form the ferrite strips. Using the staggered pattern in a base power-transfer structure defines a coupling range for coupling with a vehicle power-transfer structure and a range limit for associated magnetic field emissions by the base power-transfer structure.

Abstract: An implementation provides an apparatus for determining an alignment of a wireless power coupler of a vehicle with a wireless power transmitter. The apparatus comprises a sensing circuit configured to measure a current in a plurality of separate conductors of the wireless power coupler. The apparatus comprises a controller configured to determine information related to an alignment of the wireless power coupler with the wireless power transmitter based at least in part on the measured current in the plurality of separate conductors. The controller is configured to determine the information related to the alignment of the wireless power coupler with the wireless charging power transmitter based on a difference between the measured current in the plurality of separate conductors. The information comprises a direction and distance of offset between the wireless power coupler and the wireless power transmitter. The measured current is a short circuit current.

Abstract: A method of operating a wireless-power receiver comprises: determining a first resonant frequency of a resonant circuit, of the wireless-power receiver, corresponding to a first time at which the wireless-power receiver is disposed at a first longitudinal offset from a power transmitter, the first longitudinal offset being relative to a length of a device containing the wireless-power receiver; determining a second resonant frequency of the resonant circuit, corresponding to a second time at which the wireless-power receiver is disposed at a second longitudinal offset from the power transmitter, the second longitudinal offset being relative to the length of the device containing the wireless-power receiver, and the first longitudinal offset being different from the second longitudinal offset; and determining a lateral misalignment of the wireless-power receiver relative to a wireless-power transmitter based on the first resonant frequency and the second resonant frequency.

Abstract: A method of determining a value of a magnetic characteristic of a wireless-power receiver system includes: obtaining a first frequency indication of a first resonant frequency of a power reception circuit of the wireless-power receiver system corresponding to a power transmit circuit and the power reception circuit being in a first state having a first combined circuit configuration; obtaining a second frequency indication of a second resonant frequency of the power reception circuit corresponding to the combination of the power transmit circuit and the power reception circuit being in a second state having a second combined circuit configuration, the first combined circuit configuration differing from the second combined circuit configuration by at least one of component content or a value of at least one component; and using the first frequency indication and the second frequency indication to determine the value of the magnetic characteristic of the wireless-power receiver system.

Abstract: The present invention relates to data communication techniques and integrated circuit devices. More specifically, embodiments of the present invention provide an input buffer module that utilizes one or more equalization elements. The input buffer module includes an array of inverters arranged in a series. An equalization element is configured in series relative to a segment of the array of inverters. The resistance value of the equalization element is predetermined based on a delay associated with the segment of the array of inverters. There are other embodiments as well.

Abstract: The present invention relates to telecommunication techniques and integrated circuit (IC) devices. In a specific embodiment, the present invention provides a laser deriver apparatus that includes a main DAC section and a mini DAC section. The main DAC section processes input signal received from a pre-driver array and generates an intermediate output signal. The mini DAC section provides a compensation signal to reduce distortion of the intermediate output signal. The intermediate output signal is coupled to output terminals through a cascode section and/or a T-coil section. There are other embodiments as well.

Abstract: The current invention concerns composition comprising bitumen, one or more plasticity modifying agent(s), and lignin, as well as methods and uses related to such compositions. In particular, compositions are disclosed with improved properties, such as mixing properties.

Abstract: Various systems, methods, and apparatuses for operating a wireless charging device in an electric vehicle are disclosed. One method includes detecting a system fault indicative of one or more faults in the wireless charging device in the electric vehicle or in the transmitter. The method further includes determining a fault severity level from a plurality of fault severity levels based on a type of the system fault detected. A total number of types of system faults can be greater than a total number of the plurality of fault severity levels. The method further includes performing one or more system fault response operation based on the determined fault severity level. Each of the plurality of fault severity levels can be associated with a different set of system fault response operations.

Abstract: A client may submit a job to a service provider that processes a large data set and that employs a message passing interface (MPI) to coordinate the collective execution of the job on multiple compute nodes. The framework may create a MapReduce cluster (e.g., within a VPC) and may generate a single key pair for the cluster, which may be downloaded by nodes in the cluster and used to establish secure node-to-node communication channels for MPI messaging. A single node may be assigned as a mapper process and may launch the MPI job, which may fork its commands to other nodes in the cluster (e.g., nodes identified in a hostfile associated with the MPI job), according to the MPI interface. A rankfile may be used to synchronize the MPI job and another MPI process used to download portions of the data set to respective nodes in the cluster.

Abstract: In certain aspects, methods and systems for controlling power transfer at a wireless power receiver are disclosed. In certain aspects, a method includes determining a duty cycle of a DC-DC converter of the wireless power receiver. The method further includes determining a duty cycle limit for an AC switching controller based on the determined duty cycle. The method further includes determining an operational duty cycle for the AC switching controller. The method further includes comparing the operational duty cycle to the duty cycle limit. The method further includes adjusting at least one of a desired voltage and current input to the DC-DC converter when the operational duty cycle is greater than the duty cycle limit.

Abstract: Certain aspects of the present disclosure are generally directed to apparatus and techniques for wirelessly charging a device. An exemplary method generally includes receiving, at a first wireless power transfer device, a synchronization signal indicative of a phase for generating a wireless charging field, determining an adjusted phase for generating the wireless charging field based, at least in part, on the received synchronization signal and one or more measurements taken at least one of the first wireless power transfer device or a second wireless power transfer device, wherein the one or more measurements are indicative of a phase difference between the first wireless power transfer device and the second wireless power transfer device, and generating, at the first wireless power transfer device, the wireless charging field with the adjusted phase.

Abstract: A method for providing fault tolerance in a distributed file system of a service provider may include launching at least one data storage node on at least a first virtual machine instance (VMI) running on one or more servers of the service provider and storing file data. At least one data management node may be launched on at least a second VMI running on the one or more servers of the service provider. The at least second VMI may be associated with a dedicated IP address and the at least one data management node may store metadata information associated with the file data in a network storage attached to the at least second VMI. Upon detecting a failure of the at least second VMI, the at least one data management node may be re-launched on at least a third VMI running on the one or more servers.

Abstract: Certain aspects of the present disclosure are generally directed to apparatus and techniques for apparatus for wireless charging. The apparatus generally includes a first wireless charging element, and transmit circuitry coupled to the first wireless charging element and configured to supply power to the first wireless charging element to transmit a wireless charging field to a vehicle. In certain aspects, the apparatus also includes a controller coupled to the transmit circuitry and configured to determine a charging condition indicative of a speed of the vehicle, and adjust the power supplied to the first wireless charging element via the transmit circuitry based on the determination.

Abstract: The present disclosure describes aspects of a vehicle-based beacon mode for wireless electric vehicle charging. In some aspects, a circuit for receiving wirelessly transferred power includes a coil connected to boost circuitry configured to convert received power to a form suitable for storage. The circuit also includes beacon circuitry connected to a voltage source that, in combination with portions of the boost circuitry, enables current to be driven into the coil to generate a beacon signal. Based on this beacon signal, a base charging unit can detect the presence of the circuit and initiate the wireless transmission of power to the circuit without additional out-of-band communication. Further, the beacon circuitry may be compatible with, or protected from, current of the received power such that the circuit can seamlessly transition from generating the beacon signal to converting the received power without active reconfiguration, synchronization, or state control.

Abstract: The present invention relates to telecommunication techniques and integrated circuit (IC) devices. In a specific embodiment, the present invention provides a laser deriver apparatus that includes a main DAC section and a mini DAC section. The main DAC section processes input signal received from a pre-driver array and generates an intermediate output signal. The mini DAC section provides a compensation signal to reduce distortion of the intermediate output signal. The intermediate output signal is coupled to output terminals through a cascode section and/or a T-coil section. There are other embodiments as well.

Abstract: Systems and methods are described that increase pad efficiency and robustness. These systems and methods balance magnetic flux density in ferrite strips in a WEVC pad to reduce heat produced in high-flux areas of the ferrite strips. Aspects include controlled spacing between ferrite strips of a WEVC pad and intentional gaps located within high-flux areas in the strips. The sizes of the intentional gaps are determined in relation to the size of the spacing between the strips. In addition, ribs are disposed between the strips and connected to a backplate to provide structural rigidity and robustness to the pad.