Abstract: Methods, systems, and apparatus for drone collision avoidance and acoustic sensing are disclosed. An example apparatus to detect acoustic data from a drone includes a controller to set a target revolutions per minute (RPM) for a motor of the drone. The controller is to modify the target RPM based on a modulation pattern to cause the motor to rotate a propeller of the drone at a modulated RPM. The modulated RPM creates self-generated noise. The example apparatus also includes a sensor to gather acoustic data and an analyzer to remove the self-generated noise from the acoustic data to create external acoustic data for processing.

Abstract: Apparatus, systems, methods, and articles of manufacture for tracking a trajectory by rotorcraft unmanned aerial vehicles (UAVs) are described herein. An example trajectory tracking controller includes an altitude controller to calculate an output value of a thrust control variable based on a trajectory of a rotorcraft independent of one or more system parameters of the rotorcraft. The example trajectory tracking controller also includes an attitude controller to calculate output values of roll, pitch, and yaw control variables based on the trajectory independent of the one or more of the system parameters. The example trajectory tracking controller further includes a motor speed selector to select speeds for propeller motors of the rotorcraft based on the output values of the thrust, roll, pitch, and yaw control variables and activate the propeller motors based on the selected motor speeds.

Abstract: Apparatus, systems, methods, and articles of manufacture for tracking a trajectory by rotorcraft unmanned aerial vehicles (UAVs) are described herein. An example trajectory tracking controller includes an altitude controller to calculate an output value of a thrust control variable based on a trajectory of a rotorcraft independent of one or more system parameters of the rotorcraft. The example trajectory tracking controller also includes an attitude controller to calculate output values of roll, pitch, and yaw control variables based on the trajectory independent of the one or more of the system parameters. The example trajectory tracking controller further includes a motor speed selector to select speeds for propeller motors of the rotorcraft based on the output values of the thrust, roll, pitch, and yaw control variables and activate the propeller motors based on the selected motor speeds.

Abstract: A universal controller for robust trajectory tracking in multirotor unmanned aerial vehicles (UAVs) is disclosed. A particular embodiment includes: a sensor system to measure position and orientation of a multirotor unmanned aerial vehicle (UAV); and a flight control system, coupled to the sensor system, the flight control system being configured to: obtain position and orientation data from the sensor system; generate a plurality of derivatives from the position and orientation data using a differentiator; apply a decoupling control law to approximately decouple translation dynamics from each other in a three-dimensional (3D) space; compute error values between desired trajectories and actual trajectories in each dimension of 3D space using the plurality of derivatives and the decoupled dynamics; and generate control signals to vary speeds of a plurality of thrust elements to counteract the computed error values in each dimension of 3D space.

Abstract: Methods, systems, and apparatus for drone collision avoidance and acoustic sensing are disclosed. An example apparatus to detect acoustic data from a drone includes a controller to set a target revolutions per minute (RPM) for a motor of the drone. The controller is to modify the target RPM based on a modulation pattern to cause the motor to rotate a propeller of the drone at a modulated RPM. The modulated RPM creates self-generated noise. The example apparatus also includes a sensor to gather acoustic data and an analyzer to remove the self-generated noise from the acoustic data to create external acoustic data for processing.

Abstract: An apparatus is described herein. The apparatus includes a plurality of conductors, wherein at least one conductor is a common-mode conductor. The apparatus also includes an encoder to encode data to be transmitted on the plurality of conductors, wherein a data speed of the common-mode conductor is limited and a data speed of other conductors is maximized according to an encoding matrix.

Abstract: Systems and methods to generate maps or models of structures are disclosed. Features of the structure to be mapped may be determined for the purposes of generating the map or model based at least in part on images associated with the structure, sensor measurements associated with the structure, and phase data of communications signals that interact with the structure. The mapping or modeling processes may be performed at a mapping server that receives images, sensor data, and/or communications signal phase information from one or more user devices, such as mobile devices. The mapping servers may perform a simultaneous localization and mapping (SLAM) process and may enhance the generated maps using sensor and/or communications phase data to map one or more hidden features of the structure.

Abstract: An embodiment includes a functional near infrared (fNIR) system comprising: first, second, and third light emitting diodes (LED) and a photo detector; and at least one storage medium having instructions stored thereon for causing the system to: (a) emit photo energy at first, second, and third wavelengths from the first, second, and third LEDs during first and second time periods, (b) determine first, second, and third optical density changes and changes in first and second chromophore concentrations based on the emitted photo energy; and (c) determine and fit first, second, and third absorption values to a first absorption spectra curve based on the determined changes in first and second chromophore concentrations. Other embodiments are described herein.

Abstract: Systems and methods to provide distributed wireless communications from a plurality of wireless network devices are disclosed. The plurality of wireless network devices may be configured to provide direction communications with one or more user devices. This may be performed by adjusting one or more radio parameters associated with the plurality of wireless network devices. The plurality of wireless network devices may cooperate with each other to provide network connectivity for the one or more user devices with relatively high fidelity, relatively high bandwidth, and relatively low power consumption. The plurality of wireless network devices may further provide distributed processing capability to perform tasks for user devices that may provide task requests.

Abstract: This disclosure is directed to a composable thin computing device. An example device may comprise at least a device interface module, a communication module, a processing module, a memory module, a composable computing module and a power module. The device interface module may couple the device to an operational environment via at least one of a physical connector or a wireless connection. The communication module may at least one of transmit or receive data via the device interface module. The processing module may process the data. The memory module may store at least a portion of the data. The composable computing module may cause at least one of the above modules to perform certain functionality related to the operational environment. The power module may power at least one of the above modules.

Abstract: An embodiment includes a functional near infrared (fNIR) system comprising: first, second, and third light emitting diodes (LED) and a photo detector; and at least one storage medium having instructions stored thereon for causing the system to: (a) emit photo energy at first, second, and third wavelengths from the first, second, and third LEDs during first and second time periods, (b) determine first, second, and third optical density changes and changes in first and second chromophore concentrations based on the emitted photo energy; and (c) determine and fit first, second, and third absorption values to a first absorption spectra curve based on the determined changes in first and second chromophore concentrations. Other embodiments are described herein.

Abstract: Generally, this disclosure provides systems, devices, methods and computer readable media for the use of digital TV (DTV) bandwidth for web cache pre-loading. A system may include a receiver module configured to receive a digital television (DTV) signal. The system may also include a data extraction module configured to extract the web cache data from the DTV signal, wherein the web cache data is encoded within the spectral bandwidth of the DTV signal. The system may further include a network interface configured to transmit the extracted web cache data to a device that includes a web cache pre-loading service.

Abstract: Techniques are disclosed for direct viewer projection, which involves having each pixel's emitted light aimed at or otherwise provided directly to the target pupil of a viewing person. In one embodiment, the techniques are implemented using steerable, collimated light sources fashioned into an array to effectively provide a display screen. Each steerable, collimated light source of the array corresponds to one pixel of a given image at a given viewing location, such that no one light source shows a whole image; rather, the whole array is used to display an image. The array can be scanned to provide different images to different viewing locations. The content projected to the different locations may be related (e.g., a movie) or unrelated (e.g., two different movies). A specific viewer can be identified and tracked such that the content is only projected to the target viewer's eyes and no one else's.

Abstract: Technologies for monitoring contact between one or more electrodes of a biofeedback monitoring device and a user include an electrode contact analysis device. The electrode contact analysis device is configured to transmit a body coupled communication (BCC) reference signal via a transmission electrode and receive biofeedback signals received by an electrode of the biofeedback monitoring device. The electrode contact analysis device is configured to process the received biofeedback signals to produce a received BCC reference signal from the received biofeedback signals and determine a quality of a contact between the electrode and the user based on the received BCC reference signal.

Abstract: Techniques for encoding data are described herein. An example of a device in accordance with the present techniques includes a signaling module coupled to a plurality of digital inputs. The signaling module is to encode data received at the plurality of digital inputs to generate encoded data. Based on the encoded data, the signaling module can drive line voltages on a plurality of signal lines of a bus. Each one of the plurality of line voltages corresponds to a weighted sum of the data received at the plurality of digital inputs.

Abstract: An apparatus and method is described herein for reducing noise in a power distribution network for an interface. The power distribution network is characterized. And based on that characterization, worst case patterns for the interface are predicted and avoided. As one example, characterization includes providing a stimulus, such as a step function stimulus, and determining a mathematical function response, such as a step function response. Then, based on the step function response, a resonant frequency for the power distribution network is determined; from which patterns that cause the resonant frequency are identified/predicted. And when identified patterns are detected, they are scrambled or manipulated to avoid causing a worst-case noise scenario in an interface's power distribution network.

Abstract: A computing device including a wireless communication system is provided herein. The computing device includes a plurality of antennas coupled to the wireless communication system. The computing device also includes a pattern controller to shape an antenna pattern of the plurality of antennas to point a null of the antenna pattern toward a Radio Frequency Interference (RFI) source of the computing device.

Abstract: An apparatus is described herein. The apparatus includes a plurality of conductors, wherein at least one conductor is a common-mode conductor. The apparatus also includes an encoder to encode data to be transmitted on the plurality of conductors, wherein a data speed of the common-mode conductor is limited and a data speed of other conductors is maximized according to an encoding matrix.

Abstract: Techniques are disclosed for direct viewer projection, which involves having each pixel's emitted light aimed at or otherwise provided directly to the target pupil of a viewing person. In one embodiment, the techniques are implemented using steerable, collimated light sources fashioned into an array to effectively provide a display screen. Each steerable, collimated light source of the array corresponds to one pixel of a given image at a given viewing location, such that no one light source shows a whole image; rather, the whole array is used to display an image. The array can be scanned to provide different images to different viewing locations. The content projected to the different locations may be related (e.g., a movie) or unrelated (e.g., two different movies). A specific viewer can be identified and tracked such that the content is only projected to the target viewer's eyes and no one else's.

Abstract: A method for reducing noise on a power distribution network of a printed circuit board includes determining whether a given data signal may be a problematic data signal. The given data signal is issued onto a signal distribution network of the printed circuit board if the given data signal is determined to not be a problematic data signal. The given data signal is encoded into an encoded data signal if the given data signal is determined to be a problematic data signal, and the encoded data signal is issued onto the signal distribution network.