Abstract: This disclosure provides methods, devices, and systems for color volume mapping (CVM) techniques that operate in the Jzazbz color space. In some aspects, an image processor may receive image data having color channels associated with a color space that is not perceptually uniform and may convert the image data to the Jzazbz color space. The image processor may perform a global CVM operation which maps a range of Jz, az, and bz values supported by the image source to a range of jz, az, and bz values supported by the image target. The image processor may further perform a local CVM operation which adaptively tunes the Jz, az, and bz channels of image data based on various properties of the received image. Still further, the image processor may adaptively blend Jz values at the edges of objects and other features to preserve details in low-contrast regions of the received image.

Abstract: A display driver includes first and second source outputs coupled to a display panel, a second source output, a first source amplifier, a second source amplifier, and a first switch. The first source amplifier is configured to provide a first data voltage to the first source output based on first pixel data during a display update period and provide a predetermined voltage to the first source output during a non-display update period. The second source amplifier is configured to provide a second data voltage to the second source output based on second pixel data during the display update period. The first switch is configured to electrically connect an output of the first source amplifier to the second source output to provide the predetermined voltage to the second source output during the non-display update period. The second source amplifier is configured to be deactivated during the non-display update period.

Abstract: A sensing circuit configured to detect an input object proximate to a sensing region of an input device is provided. The sensing circuit includes an amplifier having an output and is configured to output a resulting signal. The sensing circuit also includes a plurality of mixers configured to receive the resulting signal from the output of the amplifier and to generate a plurality of output signals. At least one output signal is selected based on a comparison of a signal-to-noise ratio of each of the plurality of output signals with a noise threshold. The at least one output signal is selected according to criteria relative to the noise threshold. The input object is detected using the selected at least one output signal.

Abstract: A depth sensing system including an electronic display, a light source, an array of optical sensing elements, and a depth map generator. The light source is configured to transmit periodic bursts of light in a field of view (FOV) of the depth sensing system. The array of optical sensing elements is disposed behind the electronic display and configured to detect light reflected from one or more objects in the FOV of the depth sensing system, where the reflected light is partially occluded by the electronic display. The depth map generator is configured to receive sensor data based on the detected light form the array of optical sensing elements and determine depth information about the one or more objects by applying one or more neural network models to the received sensor data.

Abstract: An input device includes a plurality of sensor electrodes and a processing system connected to the plurality of sensor electrodes. The plurality of sensor electrodes includes transmitter electrodes and receiver electrodes. The processing system is configured to perform single-burst multi-frequency presence detection, wherein performing single-burst multi-frequency presence detection includes: driving the transmitter electrodes of the plurality of electrodes with transmitter signals having different frequencies; obtaining resulting signals via the receiver electrodes of the plurality of electrodes based on the transmitter signals driven onto the transmitter electrodes; and detecting whether an input object is present within a sensing region of the input device based on the obtained resulting signals.

Abstract: A display driver includes a plurality of gamma bus lines and a drive leg configured to receive pixel data. The drive leg includes a decoder having first and second outputs, a source amplifier having a set of inputs, and a source interpolation selector. The decoder electrically connects, based on the pixel data, the first output to a first one of the gamma bus lines and the second output to a second one of the gamma bus lines. The source amplifier provides a data voltage to a display panel based on a set of input voltages at the set of inputs. The source interpolation selector provides, based on the pixel data, electrical connections between the first and second outputs of the decoder and the set of inputs of the source amplifier, and electrically connects the first and second outputs of the decoder during a first period of a horizontal sync period.

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 display device includes a backlight device, and a backlight control circuit. The backlight device includes a plurality of light sources configured to illuminate a plurality of zones of a display panel, respectively. The zones are aligned in a first direction, and each zone includes a plurality of subzones aligned in a second direction perpendicular to the first direction. The backlight control circuit is configured to receive an input image and determine a backlight value for a target light source of the light sources, the target light source corresponding to a target zone of the plurality of zones. Determining the backlight value for the target light source includes: determining local brightness values of respective subzones of the target zone based on the input image; and determining the backlight value for the target light source based on the local brightness values of the subzones of the target zone.

Abstract: A method is provided. The method comprises: obtaining, by a processing system and using a set of rotation electrodes that interact with the knob interface, first resulting signals and second resulting signals; determining, by the processing system, an initial state of the knob interface using the first resulting signals and the second resulting signals; obtaining, by the processing system and using the set of rotation electrodes, third resulting signals indicating a first rotational state of the knob interface, based at least in part on the knob interface being rotated from the initial state to the first rotational state; determining, by the processing system, the rotational direction of the knob interface using the first resulting signals, the second resulting signals, and the third resulting signals; and adjusting, by the processing system, a setting using the determined rotational direction.

Abstract: This disclosure provides methods, devices, and systems for wireless communications. The present implementations more specifically relate to techniques for changing the channel of a Basic Service Set (BSS) when a wireless communication device attempts to monopolize access to a shared wireless medium. In some aspects, an access point (AP) may be configured to detect nonconforming Network Allocation Vectors (NAVs) that extend the duration for which another wireless communication device has already reserved access to a shared wireless medium. For example, the wireless communication device may cause the AP to set a nonconforming NAV by transmitting a packet that reserves the shared wireless medium for a duration overlapping with, but ending later than, another duration for which the same wireless communication device has already reserved the shared medium. In some implementations, the AP may switch its BSS to a different wireless channel in response to detecting one or more nonconforming NAVs.

Abstract: A method for determining a state of a foldable device is provided. The foldable device comprises: a first set of electrodes located in a first portion of the foldable device; a second set of electrodes located in a second portion of the foldable device; a display device configured to display information to a user; and a processing system configured to: drive the first set of electrodes to generate a plurality of sensing signals that are detectable by the second set of electrodes; obtain a plurality of resulting signals associated with the plurality of sensing signals via the second set of electrodes; determine a state of the foldable device based on the plurality of resulting signals; and change one or more settings of the display device based on the determined state.

Abstract: This disclosure provides methods, devices, and systems for wireless communications. The present implementations more specifically relate to techniques for detecting a reachability of portable devices in a digital enhanced cordless telecommunications (DECT) ultra low energy (ULE) home automation networks (HAN). In some aspects, a base station may determine that a portable device is unreachable after failing to receive an ACK from the device after a threshold number of retransmissions or a threshold amount of time has elapsed. Upon determining that a portable device is unreachable, the base station may remove any messages intended for the device from its transmission queue and may refrain from processing any further transmissions to the device. A base station may determine that a portable device is reachable again after receiving a communication from the device. In some implementations, a base station may notify a host application or processor about the reachability of the portable devices.

Abstract: This disclosure provides methods, devices, and systems for signal processing. The present implementations relate more specifically to a spatio-temporal beamformer. In some aspects, a beamforming system may receive an audio signal via a plurality of microphones, the audio signal including a number (B) of frames for each of the plurality of microphones, each of the B frames for each of the plurality of microphones including a number (N) of time-domain samples. For a first microphone, the beamforming system may transform the B*N time-domain samples into B*N/2 first frequency-domain samples; transform the B*N/2 first frequency-domain samples into B*N/2 second frequency-domain samples; and determine a probability of speech associated with the B*N/2 second frequency-domain samples based on a neural network model. The beamformer system may determine a minimum variance distortionless response (MVDR) beamforming filter based at least in part on the probability of speech for the first microphone.

Abstract: A method includes processing input image data to produce resulting image data corresponding to a resulting image such that a first region of the resulting image is filled with black pixels. The method further includes driving a display panel based on the resulting image data. The method further includes producing black pixel pattern data indicative of an arrangement of the black pixels in the resulting image. The method further includes controlling, based on the resulting image data and the black pixel pattern data, luminance levels of one or more of a plurality of light sources of a backlight device configured to illuminate the display panel.

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: A display device includes, a backlight device, and a backlight control circuit. The backlight device includes a plurality of light sources configured to illuminate a display panel. The backlight control circuit is configured to apply a filter to a target part of the input image to generate a filtered image part. The target part of the input image is displayed in a corresponding region of the display panel illuminated by a target light source of the plurality of light sources. The backlight control circuit is further configured to control a luminance level of the target light source based on a maximum pixel luminance level of the filtered image part and a local average picture level (APL) of the filtered image part.

Abstract: A system for using a transparent conductive material layer for a knob interface is provided. The system comprises: the knob interface comprising a fixed base and one or more knob interface electrodes; the transparent conductive material layer configured to electrically couple the subset of the plurality of grid electrodes to the one or more knob interface electrodes; and a processing system. The processing system is configured to: drive the plurality of grid electrodes with one or more signals; receive one or more resulting signals based on driving the plurality of grid electrodes with the one or more signals; and perform one or more actions based on the one or more resulting signals.

Abstract: A method may include partitioning a tensor that includes a plurality of data values into a number (K) of subtensors, where each of the K subtensors may include a respective subset of the plurality of data values. The method may also include retrieving one or more first data values of the subset of data values included in a first subtensor of the K subtensors in accordance with an access pattern associated with a neural network processor. The method may include storing the one or more first data values of the subset of data values in one of K segments of cache memory, where each of the K segments may be associated with a respective one of the K subtensors. Further, the method may include processing, using the neural network processor, the one or more first data values of the subset of data values in accordance with the access pattern.

Abstract: A display driver includes a timing controller and a drive circuit. The timing controller receives an external horizontal sync signal and generates an internal horizontal sync signal based on the external horizontal sync signal. The drive circuit drives a display panel in synchronization with the internal horizontal sync signal. Generating the internal horizontal sync signal includes: generating a first pulse of the internal horizontal sync signal in response to detection of a first pulse of the external horizontal sync signal after a masking period has expired, wherein the masking period starts when a first previous pulse is detected in the external horizontal sync signal; and generating a second pulse of the internal horizontal sync signal in response to detection of a second pulse of the external horizontal sync signal in a non-masking period which starts when a second previous pulse is detected in the external horizontal sync signal.

Abstract: This disclosure provides methods, devices, and systems for wireless communications. The present implementations more specifically relate to trigger frame designs that support early validation of trigger frames. In some aspects, an AP may transmit a trigger frame soliciting a trigger-based (TB) physical layer convergence protocol (PLCP) protocol data unit (PPDU) from one or more wireless stations (STAs), where the trigger frame includes one or more user information fields, an early frame check sequence (eFCS) following the user information fields, a series of padding bits following the eFCS, and a frame check sequence (FCS) following the series of padding bits. Each STA associated with the AP may receive and validate a first portion of the trigger frame based on the eFCS. Any non-solicited STAs that receive the trigger frame may enter a low power mode in response to validating the first portion of the trigger frame, without receiving the padding bits.