Pulse density modulation systems and methods
Granted: April 25, 2023
Patent Number:
11637546
Systems and methods for programmable pulse density modulation (PDM) components enable backwards compatibility while maintaining reasonable tolerances. A system includes a programmable PDM device, a PDM master device and a bus communicably coupling the programmable PDM device to the PDM receiver. The PDM device may include an audio sensor, audio input circuitry, a delta-sigma converter and a PDM transmitter and receiver. The PDM transmitter and receiver may send out PDM data from the PDM…
Excitation schemes for an input device
Granted: April 25, 2023
Patent Number:
11635858
A system and method for capacitive sensing comprises driving a first sensor electrode of a plurality of sensor electrodes with a first sensing signal to acquire a first resulting signal with the first sensor electrode during a period and driving a second sensor electrode of the plurality of sensor electrodes with the first sensing signal to acquire a second resulting signal with the second sensor electrode during the period. Further, a third sensor electrode of the plurality of sensor…
Low ground mass correction for capacitive imaging sensors
Granted: April 25, 2023
Patent Number:
11635848
A capacitive sensing input system includes sensor electrodes disposed in a sensor electrode pattern and a processing system. When under a low ground mass (LGM) condition, proximity-sensing pairs of electrodes formed by a first selective pairing of the sensor electrodes have an increased sensitivity to a presence of an input object in comparison to LGM-sensitive pairs of electrodes formed by a second selective pairing of the sensor electrodes that are primarily sensitive to the LGM…
Display driver, display device and method of driving display panel
Granted: April 25, 2023
Patent Number:
11635845
A display driver comprises a touch controller configured to perform touch sensing on a display panel during a vertical sync period. A first field of the vertical sync period comprises a display period and a touch sensing period following the display period. A start timing of the touch sensing period is controlled by an internal clock signal. A first counter is configured to, responsive to completion of the touch sensing, start a counting operation in synchronization with the internal…
Fingerprint sensor housing with non-uniform thickness
Granted: April 11, 2023
Patent Number:
11625945
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…
Synchronizing input sensing with display updating
Granted: April 11, 2023
Patent Number:
11625127
A processing system configured to receive a first display control signal corresponding to a non-display update period of a display frame and a second display control signal corresponding to a display update period of the display frame. The processing system is further configured to acquire, based on receipt of the first display control signal, first resulting signals from sensor electrodes electrically connected to the sensor driver by operating the sensor electrodes for a first type of…
IR-drop compensation for a display panel including areas of different pixel layouts
Granted: April 4, 2023
Patent Number:
11620933
A display driver includes image processing circuitry and driver circuitry. The image processing circuitry is configured to process first image data for pixels of a display panel comprising a first region and a second region to generate output voltage data. The first region and the second region have different pixel layouts. The driver circuitry is configured to update the pixels based on the output voltage data. Processing the first image data comprises IR-drop compensation based on…
IR-drop compensation for a display panel including areas of different pixel layouts
Granted: April 4, 2023
Patent Number:
11620933
A display driver includes image processing circuitry and driver circuitry. The image processing circuitry is configured to process first image data for pixels of a display panel comprising a first region and a second region to generate output voltage data. The first region and the second region have different pixel layouts. The driver circuitry is configured to update the pixels based on the output voltage data. Processing the first image data comprises IR-drop compensation based on…
System and method for reducing electromagnetic interference in a display panel
Granted: March 28, 2023
Patent Number:
11615735
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 slew rate 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…
Edge illumination architecture for display device
Granted: March 28, 2023
Patent Number:
11615762
A display driver includes first interface circuitry, a graphic memory, image processing circuitry, and drive circuitry. The first interface circuitry is configured to receive an edge illumination command from a controller external to the display driver. The graphic memory is configured to store image data. The image processing circuitry is configured to render an edge-illuminated image by overlaying an edge illumination graphic on a first image corresponding to the image data in response…
Capacitive pointing stick assembly with presence detection
Granted: March 28, 2023
Patent Number:
11614813
A pointing stick assembly includes: a head having a top surface configured to interface with a finger; a shaft connected to the head, wherein the shaft configured to be moved downward based on a finger pressing down on the head and to be tilted based on a finger tilting the head; a first sensor layer comprising a receiver electrode and a transmitter electrode; a second sensor layer comprising a transmitter electrode; and a third sensor layer comprising a plurality of receiver electrodes.…
Headphone alignment systems and methods
Granted: March 7, 2023
Patent Number:
11601744
An on-ear headphone includes an alignment structure extending into the user's concha to help the user to align the headset for optimal comfort and sound perception. The alignment minimizes sound leakage, optimizes audio playback, and improves active noise cancelation.
Multi-endpoint data transport system
Granted: March 7, 2023
Patent Number:
11599487
A time domain duplex (TDD) device is disclosed. The TDD device may include at least a digital interface and a TDD physical interface (PHY). The digital interface may be coupled to a plurality of peripheral devices. The TDD PHY may be coupled to a micro-coaxial cable. The TDD device may aggregate data from the plurality of peripheral devices and transmit the aggregated data through the TDD PHY.
DC-DC converter output regulation systems and methods
Granted: February 28, 2023
Patent Number:
11594964
A circuit includes a controller circuit configured to receive an output voltage of a converter and adjust a switching frequency of the converter in response to a status of an output load and an output load sensing circuit configured to determine the status of the output load and provide the peak current to the controller circuit. The output load sensing circuit may include a first timer configured to provide a delayed first signal to a peak current control in response to the output load…
System and method for touch sensing noise mitigation using sub-burst size
Granted: February 28, 2023
Patent Number:
11592937
A display controller includes a touch sensing controller configured to drive sensing electrodes with a touch sensing waveform that includes multiple modulations. The touch sensing controller is further configured to halt driving the plurality of sensing electrodes when a number of the modulations satisfies a selected sub-burst size. The touch sensing waveform is synchronized to an instance of a horizontal sync signal.
Semiconductor device having a communication bus
Granted: February 28, 2023
Patent Number:
11592927
A semiconductor device for an input device comprises sensor circuitry, a plurality of contacts and a sensor bus. A first contact of the plurality of contacts is configured to be coupled to a first sensor electrode of the plurality of sensor electrodes, a second contact of the plurality of contacts is configured to be coupled to a second sensor electrode of the plurality of sensor electrodes, and a third contact of the plurality of contacts is configured to be coupled to a third sensor…
Low latency input object detection under low ground mass condition
Granted: February 28, 2023
Patent Number:
11592925
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…
Deep content tagging
Granted: February 21, 2023
Patent Number:
11589120
A method and apparatus for deep content tagging. A media device receives one or more first frames of a content item, where the one or more first frames spans a duration of a scene in the content item. The media device detects one or more objects or features in each of the first frames using a neural network model and identifies one or more first genres associated with the first frames based at least in part on the detected objects or features in each of the first frames. The media device…
Indication for multi-factor authentication
Granted: February 14, 2023
Patent Number:
11580211
An input device configured for multi-factor authentication. The input device includes a plurality of sensor electrodes, one or more light sources, and an authentication component. The plurality of sensor electrodes is configured for capacitive sensing in a sensing region of the input device. The one or more light sources are configured to illuminate at least a portion of the sensing region of the input device. The authentication component is configured to receive a first authentication…
AR/VR navigation with authentication using an integrated scrollwheel and fingerprint sensor user input apparatus
Granted: January 24, 2023
Patent Number:
11561612
A virtual reality (VR) or augmented reality (AR) system includes: a display configured to display a user interface to a user; an integrated scrollwheel and fingerprint sensor (FPS) user input apparatus, comprising a scrollwheel configured to detect a rotational navigation input from the user and an FPS configured to detect a biometric input from the user; and a processing system configured to: receive the rotational navigation input via the scrollwheel of the integrated scrollwheel and…
