Abstract: Quadrature clock generation circuits and techniques are disclosed. An example quadrature clock generator includes an in-phase (I) clock generation circuit to generate an I clock signal based on a reference clock signal, the I clock signal and the reference clock signal each having a first frequency, a quadrature phase (Q) clock generation circuit to generate a Q clock signal based on the reference clock signal, a rise time control signal, and a fall time control signal, the Q clock signal having the first frequency, and a control circuit to generate the rise time control signal and the fall time control signal based on the I clock signal and the Q clock signal.

Abstract: A display panel includes a plastic substrate and a first inner lead bonding (ILB) electrode on the plastic substrate. The first ILB electrode includes a first bonding segment, a second bonding segment, and a first connection segment. The first bonding segment is extended in a first direction oblique to a vertical direction of the display panel. The first connection segment is configured to provide an electrical connection between the first bonding segment and the second bonding segment. The first ILB electrode is configured to be bonded to an integrated circuit chip using one of the first bonding segment or the second bonding segment.

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: A display driver includes an image processing circuit and a driver circuit. The image processing circuit is configured to: receive input image data corresponding to an input image; generate first subpixel rendered data from a first part of the input image data for a first display region of a display panel using a first setting; and generate second subpixel rendered data from a second part of the input image data for a second display region of the display panel using a second setting different from the first setting. The first pixel layout is different than the second pixel layout. The driver circuit is configured to update the first display region of the display panel based at least in part on the first subpixel rendered data and update the second display region of the display panel based at least in part on the second subpixel rendered data.

Abstract: A display driver that drives a display panel comprises storage circuitry, color addition processing circuitry, and drive circuitry. The storage circuitry stores F subpixel data acquired from color coordinate data indicating color coordinates of a displayed color in a predetermined color space displayed on the display panel when an R subpixel, a G subpixel, and a B subpixel in each of a plurality of pixels of the display panel are driven with drive signals corresponding to a minimum grayscale value and an F subpixel in each of the plurality of pixels which displays an additional color other than a primary color R, a primary color G, and a primary color B is driven with a drive signal corresponding to a maximum grayscale value. The color addition processing circuitry generates output FRGB data from input RGB data, in response to the F subpixel data stored in the storage circuitry.

Abstract: A method of detecting shift of a rotatable interface is disclosed. The rotatable interface has a fixed base with a conductive region on a bottom surface, the fixed base attached to a display screen of an input device. The method includes providing, during a first time period, a reference signal to first and second sets of electrodes of the input device that are each capacitively coupled to the conductive region. The method further includes, during a second time period, providing the reference signal to the first set of electrodes, providing a sensing signal to the second set of electrodes, and receiving, during the second time period, a resulting signal on the second set of electrodes. The method still further includes determining a translation of the rotatable interface relative to the display screen based, at least in part, on the resulting signal values received during the second time period.

Abstract: A display driver comprises signal supply circuitry and control circuitry. The signal supply circuitry is configured to supply an emission control signal to a display panel. The emission control signal controls a ratio of pixel circuits that emit light to pixels of the display panel. The control circuitry is configured to control the emission control signal based on an input image data.

Abstract: A display system includes a first memory and a display driver. The display system is configured to control the first memory to receive compensation information from the first memory with a first frequency and generate data signals for image data to be displayed on a display panel. The generation of the data signals comprises performing a compensation for the data signals based on the compensation information received from the first memory. The display driver is further configured to update pixels of the display panel with the data signals during an active display state. The display driver is further configured to generate updated compensation information based at least in part on the image data and the compensation information received from the first memory and transmit the updated compensation information to the first memory during the active display state with a second frequency lower than the first frequency.

Abstract: Audio processing systems and methods include an audio sensor array configured to receive a multichannel audio input and generate a corresponding multichannel audio signal and target-speech detection logic and an automatic speech recognition engine or VoIP application. An audio processing device includes a target speech enhancement engine configured to analyze a multichannel audio input signal and generate a plurality of enhanced target streams, a multi-stream target-speech detection generator comprising a plurality of target-speech detector engines each configured to determine a probability of detecting a specific target-speech of interest in the stream, wherein the multi-stream target-speech detection generator is configured to determine a plurality of weights associated with the enhanced target streams, and a fusion subsystem configured to apply the plurality of weights to the enhanced target streams to generate an enhancement output signal.

Abstract: This disclosure generally provides an input device that includes multiple sensor and display electrodes and a processing system. The processing system includes a plurality of local receivers coupled to respective ones of the sensor electrodes, where the local receivers are configured to acquire first resulting signals from the sensor electrodes. The processing system also includes a central receiver coupled to the sensor electrodes and configured to acquire second resulting signals from each of the sensor electrodes.

Abstract: Systems and methods for protecting a loudspeaker from excessive excursion include an audio source, an adaptive excursion protection filter, an audio clipper, an inverse excursion protection filter, an amplifier and a loudspeaker. The system performs operations including receiving an audio signal, applying an excursion protection filter, the excursion protection filter adapting in real-time to one or more speaker conditions, clipping the audio signal, applying an inverse excursion protection filter, and amplifying, using an amplification circuit, the audio signal for output to the speaker.

Abstract: A semiconductor device comprises driver circuitry, an analog-digital (AD) converter, and processing circuitry. The driver circuitry is configured to supply a drive signal to a sensor array in a sensing frame comprising 2N bursts, N being an integer of two or more. The mixer circuitry is configured to modulate a plurality of carrier waves with a plurality of sensing signals corresponding to capacitances of a plurality of sensing electrodes of the sensor array, respectively, to output a plurality of mixer outputs. A number of the plurality of sensing electrodes is 2N?1 or 2N. The AD converter is configured to perform AD conversion on a sum signal of the plurality of mixer outputs. The processing circuitry is configured to detect an object based on the output of the AD converter.

Abstract: A sensor assembly includes a cover layer and a first sensor apparatus. The cover layer is molded from a first material to have a planar surface and non-uniform thickness, where a thickness of the first material at a first region of the cover layer is less than a thickness of the first material surrounding the first region. The first sensor apparatus is disposed beneath the planar surface of the cover layer, within the first region. The first sensor apparatus is configured to transmit and receive first capacitive sensing signals through a portion of the planar surface coinciding with the first region. For example, the first sensor apparatus may be a fingerprint sensor configured to detect a fingerprint on the portion of the planar surface coinciding with the first region based on changes in the first capacitive sensing signals.

Abstract: An input device includes a touchpad and a mounting bracket made of an electrically conductive material and configured to anchor the touchpad in an electronic system. The input device further includes a near field communication (NFC) controller, and an antenna electrically interfaced with the NFC controller. The antenna includes an electrically conductive strip formed by a segment of the mounting bracket.

Abstract: Systems and methods for multimodal classification include a plurality of expert modules, each expert module configured to receive data corresponding to one of a plurality of input modalities and extract associated features, a plurality of class prediction modules, each class prediction module configured to receive extracted features from a corresponding one of the expert modules and predict an associated class, a gate expert configured to receive the extracted features from the plurality of expert modules and output a set of weights for the input modalities, and a fusion module configured to generate a weighted prediction based on the class predictions and the set of weights. Various embodiments include one or more of an image expert, a video expert, an audio expert, class prediction modules, a gate expert, and a co-learning framework.

Abstract: An electronic device incudes a rotatable interface configured to be placed on an input device, the rotatable interface including a conductor region and an adjacent patterned region. The rotatable device further includes a first set of coupling electrodes configured to be electrically coupled to the conductor region and to receive a reference signal from a first electrode of the input device, and a second set of coupling electrodes configured to be electrically coupled to the patterned region and to be electrically coupled to a second electrode of the input device, the second electrode configured to receive a resulting signal modified by the rotatable interface. In embodiments, at least a portion of each electrode of the first set of coupling electrodes and the second set of coupling electrodes is respectively provided underneath the conductor and patterned regions, and is configured to abut the input device.

Abstract: This disclosure provides methods, devices, and systems for indicating an attentiveness of a user of a head-mounted display (HMD) device. The HMD device may include a camera configured to capture images of the surrounding environment, an electronic display configured to display the images captured by the camera, and one or more sensors configured to track a direction of gaze of the user. In some aspects, the HMD device may output an attention cue based on the images displayed on the electronic display and the user’s direction of gaze. The attention cue may indicate an attentiveness of the user to a person or object in the surrounding environment. In some implementations, the attention cue may be output via an attention indicator disposed on an outer surface of the HMD device. In some other implementations, the attention cue may be output via a communication interface that communicates with another HMD device.

Abstract: A processing system configured to detect an input object proximate the processing system. The processing system includes sensor circuitry configured to make a determination, when the processing system is in a low ground mass (LGM) state, that a large object is proximate to sensor electrodes of the processing system. The sensor circuitry is further configured, in response to a determination that a large object is proximate the sensor electrodes while the processing system is in the LGM state, to drive a first group of sensor electrodes with one of an inverted signal or a non-inverted signal and drive a second group of sensor electrodes with a static DC voltage.

Abstract: The present implementations relate to a support structure for an input device that supports deflection of an input surface responsive to input forces exerted thereon and vibration of the input surface responsive to haptic feedback generated by a haptic actuator. The support structure includes one or more fixed structures mounted to a housing and a dynamic surface mounted to a sensor layer of the input device. A number of first deformable segments cantilever from the one or more fixed surfaces and deflect in a vertical direction when an input force is exerted on the sensor layer, where the input force is orthogonal to the input surface. A number of second deformable segments connect the plurality of first deformable segments to the dynamic surface and deflect in a horizontal direction when shear forces are exerted on the dynamic surface, where the shear forces are parallel to the input surface.

Abstract: A method and apparatus for image processing. A de-warping circuit is configured to retrieve, in an ordered sequence, a plurality of de-warping matrices for remapping pixels of a first image from a distorted image space to a corrected image space, where the first image depicts a scene in the distorted image space. The de-warping circuit reads, into a memory buffer, blocks of pixels of the first image based at least in part on the order of the de-warping matrices and generates a plurality of image tiles based on the blocks of pixels of the first image. Each of the image tiles is interpolated from one or more of the retrieved blocks using a respective one of the de-warping matrices. The de-warping circuit writes the plurality of image tiles to an external memory to produce a second image depicting the scene in the corrected image space.