Abstract: A method, device, and system for audio signal processing is related to nonlinear post-processing filter to enhance the suppression of interference in audio signals. A nonlinear post filter suppresses residual interference, e.g., noise or echoes, in a target signal produced by a linear filter based on the target signal, which includes the residual interference, and a noise signal that represents the interference that was removed from the raw microphone audio signal by the linear filter. The nonlinear post filter refines the noise signal by scaling the noise signal when no speech is detected and removing residual speech in the scaled noise signal when speech is detected. A gain filter to suppress residual interference in the target signal is generated using the refined noise signal and the target signal, and is applied to the target signal to produced an enhanced audio signal with residual interference suppressed.

Abstract: A method performed by a docking station operable in a plurality of modes is disclosed. The method may include obtaining first data via a first interface of the docking station and second data via a second interface of the docking station, responsive to operating in a first mode of the plurality of modes. The first interface may be configured to couple the docking station to a computing device, and the second interface may be configured to communicate with a network. The method may also include obtaining third data via the second interface of the docking station, in lieu of the first interface, responsive to operating in a second mode of the plurality of modes. The method may further include selectively outputting the first data and the second data, or the third data, to a display based on whether the docking station operates in the first mode or the second mode.

Abstract: A method, device, and system for audio signal processing is related updating filter parameters for a filter for adaptive online processing based on supervision of Voice Activity Detection (VAD), which may be delayed in the detection of the onset of speech in the audio signal. Multiple versions of the filter parameters are stored including lagged filter parameters, which are older than current filter parameters. When speech is detected in the audio signal by the VAD, the filter is updated with the lagged filter parameters, which are older than the delay in the detection of the onset of speech to ensure the filter is updated with filter parameters generated during noise frames. When speech is not detected in the audio signal, the filter is updated with the current filter parameters. The lagged filter parameters and current filter parameters are periodically updated when no speech is detected in the audio signal.

Abstract: An integrated radio frequency switching circuit includes a radio frequency (RF) input/output (RFIO) that is configured to be operatively coupled to multiple RF paths. A Wireless Local Area Network (WLAN) transmission path includes a power amplifier and a WLAN power amplifier matching network circuit that are operatively coupled to the RFIO without a switch. An inductor in the WLAN power amplifier matching network is shunted to ground for electrostatic discharge (ESD) protection of the RFIO in all operational modes. A Personal Area Network (PAN) transmission path includes two power amplifiers with different power levels that are both operatively coupled to the RFIO through a series switch. A WLAN/PAN signal reception path includes a low noise amplifier (LNA) and an LNA matching network that are coupled to the RFIO. The series switch and a LNA matching network are controlled to enable multiple transmission and reception operational modes.

Abstract: This disclosure provides methods, devices, and systems for controlling a mode of operation associated with a wireless communication link. In some implementations, a controller module of a first wireless communication device may establish a link with a second wireless communication device; switch between an active mode associated with the link and a sniff mode associated with the link without sending to a host module of the first wireless communication device a message associated with the switching between the active mode and the sniff mode; determine that the link is idle for at least a threshold duration; and in response to determining that the link is idle for at least the threshold duration, switch a mode of operation associated with the link, from an active mode to a sniff mode, without sending to the host module a message associated with the switching to the sniff mode.

Abstract: Methods and apparatus for multilink wireless communication are disclosed. An example method is performed by a wireless communication system including a first wireless communication core and a second wireless communication core and includes identifying a plurality of packets for transmission via at least one of a first wireless transmitter associated with the first wireless communication core and a second wireless transmitter associated with the second wireless communication core, the first wireless communication core and the second wireless communication core coupled via a coexistence interface, selecting a first portion of the plurality of packets for transmission via the first wireless transmitter and a second portion of the plurality of packets for transmission via the second wireless transmitter, and transmitting the first portion of the plurality of packets via the first wireless transmitter and the second portion of the plurality of packets via the second wireless transmitter.

Abstract: Methods and apparatus for offloading wireless connections are disclosed. An example method includes configuring a wireless offload engine to maintain a wireless connection on behalf of one or more circuits coupled to the wireless offload engine, determining that the one or more circuits are to enter a low-power state, and maintaining the wireless connection after the one or more circuits have entered the low-power state based at least in part on the configuring.

Abstract: This disclosure provides methods, devices, and systems for image processing. The present implementations more specifically relate to object identification using high resolution images. In some implementations, an image analysis system may obtain a source image; detect one or more objects of interest in the source image; obtain a first portion of the source image based on the one or more detected objects of interest and a buffer size associated with detecting the one or more objects of interest in the source image; demosaic the first portion of the source image; and perform one or more image processing operations based on the demosaiced first portion of the source image.

Abstract: A system and method for transmitting signals using an input device is provided. The input device comprises a display and a touch sensor. The touch sensor has a plurality of sensor electrodes and a sensor circuit. The plurality of sensor electrodes are configured to transmit a periodic signal corresponding to a first waveform and a second waveform. The sensor circuit has a first charge pump configured to generate the first waveform to drive a first set of sensor electrodes of the plurality of sensor electrodes, and a second charge pump to configured generate the second waveform to drive a second set of sensor electrodes, different from the first set of sensor electrodes.

Abstract: This disclosure provides methods, devices, and systems for protecting user privacy while operating a personal computing device. The present implementations more specifically relate to privacy protection techniques for personal computing devices based on onlooker detection and classification. In some aspects, a computing device may include a display, one or more sensors, and a privacy controller that receives sensor data from the one or more sensors and controls the display based on a presence or classification of onlookers associated with the received sensor data. In some implementations, the privacy controller may compare any onlookers detected from the sensor data to a database of contacts associated with the user and classify each onlooker as a “trusted onlooker” or “nontrusted onlooker” based on the comparison. More specifically, the privacy controller may selectively activate a privacy protection mechanism associated with the display based on whether a nontrusted onlooker is detected.

Abstract: This disclosure provides implementations for updating a neural network to improve execution of the neural network, including reducing the number of operations to be executed and processing resources and time required to execute the neural network. The implementations also relate to updating the neural network without requiring changes to a neural network framework or firmware. In some aspects, updating the neural network includes replacing a defined object in the neural network (such as an operator or group of operators in a layer all the way up to the layer itself of the neural network) with a specialized operator that is to call a specialized kernel that optimizes the replaced object. The specialized kernel requires fewer computing resources (such as fewer operations) to be executed than the replaced object. The specialized kernel may replace a layer of the neural network or be inserted between layers of the neural network.

Abstract: Systems and methods for touch sensing are provided. An input device includes a display and a touch sensor. The touch sensor has a sensing area with a plurality of sensor pixels forming rows and columns. Each sensor pixel includes a first electrode having first capacitive coupling areas and a second electrode having second capacitive coupling areas. The first capacitive coupling areas are configured to capacitively couple with one or more adjacent sensor pixels disposed in a same row and the second capacitive coupling areas are configured to capacitively couple with one or more adjacent sensor pixels in a same column. The first electrode is configured to electrically connect to one or more sensor pixels in the same column and the second electrode is configured to electrically connect to one or more sensor pixels in the same row. The sensor pixels are configured to facilitate parallel touch sensing in multiple orientations.

Abstract: A system includes sensor electrodes, a touch controller, and a transmitter that provides a transmitter signal of a first frequency to an electrode capacitively coupled to a given object. The touch controller is configured to: generate a sensing signal that has a second frequency different from the first frequency during a touch sensing phase and has a DC waveform during a touch identification phase; generate touch sensing signal data based on the sensing signal with the second frequency and resulting signals received from the sensor electrodes during the touch sensing phase; sense a touch object based on the touch sensing signal data; generate touch identification signal data based on the sensing signal with the DC waveform and the resulting signals received from the sensor electrodes during the touch identification phase; and identify whether the sensed touch object is associated with the given object based on the touch identification signal data.

Abstract: This disclosure provides methods, devices, and systems for audio signal processing. The present implementations more specifically relate to speech enhancement techniques that utilize multi-channel audio signals for audio source classification. In some aspects, a speech enhancement system may include an adaptive filter, a feature extractor, and a feature classifier. The adaptive filter is configured to receive a multi-channel audio signal, via at least a first microphone and a second microphone, and determine a relative impulse response (ReIR) between the microphones based on the multi-channel audio signal. The feature extractor is configured to extract a set of features from the ReIR based at least in part on a peak of the ReIR. The feature classifier is configured to classify the set of features as being associated with a target source or a distractor source based on a Gaussian mixture model (GMM).

Abstract: This disclosure provides methods, devices, and systems for wireless communications. The present implementations more specifically relate to reducing the power consumption of radio frequency (RF) power amplifiers without sacrificing power efficiency. In some aspects, an RF transmitter may include a signal generator, a power amplifier, and a duty cycle controller. The signal generator is configured to produce one or more RF signals based on a modulation scheme, and the power amplifier is configured to amplify the one or more RF signals for transmission over a wireless communication channel. In some implementations, the duty cycle controller may adjust a duty cycle of each RF signal based on data to be transmitted according to the modulation scheme. By changing the duty cycle of the RF signal, the duty cycle controller may toggle the output power of the power amplifier and thus modulate the amplitude of the output waveform to carry the data.

Abstract: A docking station is operable in a plurality of modes. The docking station obtains first data via a first interface configured to communicate with a computing device when operating in a first mode. The docking station obtains second data via a second interface when operating in a second mode. The docking station selectively outputs to a display via a third interface the first data when operating in the first mode, the second data when operating in the second mode, or the second data overlaid on at least a portion of the first data in response to the docking station operating in a third mode. The docking station determines when the computing device is not coupled to the docking station and, in response, operates in the second mode. The second data may be on-screen display data for an on-screen menu obtained from a processor associated with the docking station.

Abstract: The present disclosure relates to a method of managing display data in a system comprising a host device and a plurality of client devices connected to the host device. The method comprises receiving display data from at least one client device of the plurality of client devices at the host device via a shared connection between the plurality of client devices and the host device; generating, at the host device, control information for controlling generation, encoding and/or transmission of the display data by the at least one client device of the plurality of client devices; and transmitting the control information from the host device to the at least one client device of the plurality of client devices.

Abstract: A display device includes a plurality of light sources, a plurality of display driver integrated circuits (DDICs), and a light source driver. The light sources are configured to illuminate a display panel comprising a plurality of regions. Each DDIC is configured to generate backlighting data for a respective region of the plurality of regions. The backlighting data is indicative of luminance levels of respective light sources, of the plurality of light sources, which correspond to the respective region of the plurality of regions. Each DDIC is further configured to store ordering information indicative of an order for outputting the backlighting data, and output the backlighting data for the respective region based on the ordering information and a backlighting data synchronization signal. The light source driver is configured to drive the plurality of light sources based on the backlighting data for the plurality of regions output from the plurality of DDICs.

Abstract: A method performed by a docking station operable in a plurality of modes is disclosed. The method may include obtaining first data via a first interface of the docking station and second data via a second interface of the docking station, responsive to operating in a first mode of the plurality of modes. The first interface may be configured to couple the docking station to a computing device, and the second interface may be configured to communicate with a network. The method may also include obtaining third data via the second interface of the docking station, in lieu of the first interface, responsive to operating in a second mode of the plurality of modes. The method may further include selectively outputting the first data and the second data, or the third data, to a display based on whether the docking station operates in the first mode or the second mode.

Abstract: This disclosure provides methods, devices, and systems for exposure control for digital images. The present implementations more specifically relate to dynamic region-of-interest (ROI) based auto-exposure control. In some implementations, an imaging system may a first image in a series of images using a first exposure setting. The imaging system may detect one or more regions of interest (ROI) in the first image. The imaging system may determine a first brightness value associated with a first ROI in the first image. The imaging system may determine a second exposure setting based on the first brightness value. The imaging system may capture a second image in the series of images, subsequent to the first image, using the second exposure setting.