Abstract: A method of designing conductive interconnects includes determining a residual spacing value based at least in part on an integer multiple of a interconnect trace pitch and a designated cell height. The method also includes allocating the residual spacing to at least one interconnect trace width or interconnect trace space within the interconnect trace pitch.

Abstract: Minimum track standard cell circuits for reduced area are provided. In one aspect, a minimum track standard cell circuit employs a first high aspect ratio voltage rail disposed over a first one-half track and configured to provide a first voltage (e.g., VDD) to the minimum track standard cell circuit. A second high aspect ratio voltage rail is disposed over a second one-half track substantially parallel to the first high aspect ratio voltage rail. The second high aspect ratio voltage rail is configured to provide a second voltage less than the first voltage (e.g., VSS) to the minimum track standard cell circuit. The minimum track standard cell circuit employs multiple tracks disposed between the first and second one-half tracks. The number of tracks can be limited based on particular factors. Minimizing tracks reduces area compared to conventional standard cell circuits.

Abstract: In general, techniques are described for signaling channels for scalable coding of higher order ambisonic audio data. A device comprising a memory and a processor may be configured to perform the techniques. The memory may be configured to store the bitstream. The processor may be configured to obtain, from the bitstream, an indication of a number of channels specified in one or more layers in the bitstream, and obtain the channels specified in the one or more layers in the bitstream based on the indication of the number of channels.

Abstract: A power amplification device includes a power amplifier core stage and a power amplifier driver stage. The power amplifier driver stage receives a radio frequency signal to be amplified by the power amplification device. The power amplifier driver stage includes a first source follower input transistor and a first current source transistor. A source of the first source follower input transistor is coupled to a drain of the first current source transistor. The source of the first source follower input transistor is directly coupled to the power amplifier core stage to drive the power amplifier core stage. An input match and passive voltage gain device is coupled to the power amplifier driver stage to generate a voltage gain at an input of the power amplifier driver stage. A first bias source is configured to generate a first bias signal to bias the power amplifier driver stage.

Abstract: An apparatus for wirelessly receiving power via a wireless field generated by a transmitter includes a resonator configured to generate electrical current to power or charge a load based on a voltage induced in the resonator in response to the wireless field, a first variable capacitor electrically coupled to the resonator and configured to adjust a first capacitance of the first variable capacitor responsive to a first control signal, a second variable capacitor electrically coupled to the resonator and configured to adjust a second capacitance of the second variable capacitor responsive to a second control signal, and a control circuit configured to adjust and apply the first control signal and the second control signal to the first variable capacitor and the second variable capacitor, respectively, to adjust a resonant frequency of the resonator and a voltage output to the load based on an electrical characteristic indicative of a level of power output to the load.

Abstract: Various methods, apparatuses and articles of manufacture are provided which may be used in determining an altitude of a mobile device. For example, an electronic device may select a subset of reporting mobile devices located within a particular environment, estimate a reference parameter that is indicative, at least in part, of a reference altitude within the particular region, e.g., based, at least in part, on one or more altitude measurements for one or more of the reporting mobile devices, and initiate transmission of the reference parameter to at least a target mobile device. In another example, a mobile device may obtain such a reference parameter, and estimate its altitude based, at least in part, on the reference parameter.

Abstract: Systems, apparatus and methods in a mobile device for determining a breach of a geofence is presented. A reference radio frequency (RF) fingerprint is obtained by the mobile device, the reference RF fingerprint defining the geofence. The reference RF fingerprint may be generated by the mobile device or received from a different mobile device. The mobile device scans for RF signals and determines a scanned RF fingerprint based on the scan for RF signals. A breach of the geofence is determined using the reference RF fingerprinting and the scanned RF fingerprint.

Abstract: A method for determining a pose of a camera includes obtaining both a first image of a scene and a second image of the scene, where both the first and second images are captured by the camera. A first set of features is extracted from the first image and a second set of features is extracted from the second set of features. The method includes calculating a value of a visual-motion parameter based on the first set of features and the second set of features without matching features of the first set with features of the second set. The method also includes determining the pose of the camera based, at least, on the value of the visual motion parameter.

Abstract: Techniques are described for wireless communication. A first method includes receiving a primary synchronization signal (PSS) from a base station over an unlicensed radio frequency spectrum band. The PSS may be received on adjacent orthogonal frequency division multiplexing (OFDM) symbols of a first subframe of a downlink transmission. A user equipment (UE) may be synchronized with the base station based at least in part on the received PSS. A second method includes receiving a channel usage indicator over an unlicensed radio frequency spectrum band, and determining at least one OFDM symbol to monitor based on a time associated with the received channel usage indicator. A PSS may then be received from a base station over the unlicensed radio frequency spectrum band during the determined at least one OFDM symbol, and a UE may be synchronized with the base station based at least in part on the received PSS.

Abstract: Aspects of the present disclosure provide an apparatus and techniques for managing interference across operators. A base station identifies a first region of a first frequency spectrum assigned to a first operator, wherein uplink and downlink subframe configurations for Time Division Duplex (TDD) communications using the first region and a first region of a second frequency spectrum assigned to a second operator are synchronized between the first and second operator. The base station further identifies a second region of the first frequency spectrum, wherein uplink and downlink subframe configurations for TDD communications using the second region and a second region of the second frequency spectrum are not synchronized between the first and second operator. The base station communicates with one or more user equipments using the first and second region of the first frequency spectrum.

Abstract: Certain aspects relate to systems and techniques for folded optic stereoscopic imaging, wherein a number of folded optic paths each direct a different one of a corresponding number of stereoscopic images toward a portion of a single image sensor. Each folded optic path can include a set of optics including a first light folding surface positioned to receive light propagating from a scene along a first optical axis and redirect the light along a second optical axis, a second light folding surface positioned to redirect the light from the second optical axis to a third optical axis, and lens elements positioned along at least the first and second optical axes and including a first subset having telescopic optical characteristics and a second subset lengthening the optical path length. The sensor can be a three-dimensionally stacked backside illuminated sensor wafer and reconfigurable instruction cell array processing wafer that performs depth processing.

Abstract: The disclosure relates in some aspects to techniques for improved channel estimation. For example, a device can specify a pilot structure where pilot density differs over time. As another example, a device can indicate that a pilot from a prior transmission time interval (TTI) can be used for channel estimation. As another example, a device can employ frequency domain physical resource block (PRB) bundling with the bundling information signaling. As yet another example, a device can use an adjustable traffic-to-pilot ratio (TPR) for throughput optimization. Other aspects, embodiments, and features are also discussed and claimed.

Abstract: A step attenuator with constant input capacitance and having good performance is disclosed. In an exemplary design, an apparatus includes a step attenuator having a constant input capacitance for different amounts of attenuation. The step attenuator receives an input signal, provides a variable amount of attenuation for the input signal, and provides an output signal. The step attenuator may include a plurality of attenuator sections coupled in series. Each attenuator section may include a plurality of capacitors and may have the constant input capacitance. At least one of the plurality of attenuator sections may be selected or unselected to obtain a selected amount of attenuation for the step attenuator. An attenuator section may provide a predetermined amount of attenuation or a variable amount of attenuation when selected. The apparatus may further include a power detector that receives and determines the power of the output signal from the step attenuator.

Abstract: A hybrid camera sensor offers efficient image sensing by periodically evaluating pixels at a certain frame rate and disregarding values of pixels that have changed less than a threshold amount. Because only a fraction of pixels in the camera sensor may change values from frame to frame, this can result in faster readout times, which can optionally enable increased frame rates.

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus may be a wireless communication user equipment (UE). The apparatus transmits information in a device-to-device (D2D) communication to a second UE, the information indicating whether the second UE should use a direct feedback path to the UE or an indirect feedback path to the UE. The apparatus receives feedback through one of the direct feedback path or the indirect feedback path based on the information indicated in the D2D communication. The apparatus receives a D2D communication from a second UE. The apparatus determines whether to transmit feedback in response to the D2D communication via a direct feedback path to the second UE or via an indirect feedback path to the second UE. The apparatus transmits the feedback in response to the D2D communication in the determined feedback path.

Abstract: This disclosure provides devices, computer programs and methods for determining a motion direction. In one aspect, a mobile device includes sensors for measuring acceleration data. The mobile device also includes a processor and a memory that implement a motion direction estimation module configured to determine a primary axis of motion. The motion direction estimation module also determines a motion direction along the primary axis. The determination includes fitting the acceleration data, or data derived therefrom, to a bimodal distribution. A first peak of the bimodal distribution corresponds to a first motion direction along the primary axis, and a second peak corresponds to a second motion direction opposite the first. The motion direction estimation module is configured to estimate the motion direction based on the bimodal distribution. In some implementations, the motion direction estimation module selects the motion direction corresponding to the higher of the peaks as the estimated motion direction.

Abstract: Methods, systems, and devices are described for wireless communication. In one aspect, a method of wireless communication includes determining a transmit time metric associated with each transmission group of a number of transmission groups based at least in part on an amount of data in a transmit queue and a modulation and coding scheme (MCS) data rate for at least one wireless communication device in the transmission group. The method also includes scheduling a transmission to a first transmission group of the number of transmission groups based at least in part on the transmit time metric for the first transmission group.

Abstract: Various embodiments include methods implemented on a computing device for analyzing a program executing within a virtual environment on the computing device. The methods may include determining whether the program is attempting to detect whether it is being executed within the virtual environment, and analyzing the program within a protected mode of the computing device in response to determining that the program is attempting to detect whether it is being executed within the virtual environment.

Abstract: A vision sensor includes a sensor assembly and a dedicated microprocessor. The sensor assembly includes a pixel array and a lens assembly that is optically coupled with the pixel array. The lens assembly has an F#<2, a total track length less than 4 mm, and a field of view of at least +/?20 degrees. The dedicated microprocessor is configured to perform computer vision processing computations based on image data received from the sensor assembly and includes an interface for a second processor.

Abstract: A method includes generating a first signal corresponding to a first component of a high-band portion of an audio signal. The first component has a first frequency range. The method includes generating a high-band excitation signal corresponding to a second component of the high-band portion of the audio signal. The second component has a second frequency range differs from the first frequency range. The high-band excitation signal is provided to a filter having filter coefficients generated based on the first signal to generate a synthesized version of the high-band portion of the audio signal.