Automotive knob sensing device
Granted: June 27, 2023
Patent Number:
11687175
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…
Image de-warping system
Granted: June 6, 2023
Patent Number:
11669942
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…
Single-bracket support structure for force sensing and haptic feedback
Granted: June 6, 2023
Patent Number:
11669167
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…
Device and method for driving a display device
Granted: May 23, 2023
Patent Number:
11657784
A processing system comprises a first integrated circuit (IC) and a second IC. The first IC comprises first image processing circuitry, first display panel driver circuitry, and first communication circuitry. The first image processing circuitry is configured to generate a first overlay image by overlaying a first partial input image with a first image element based on first partial input image data representing the first partial input image and first image element data representing the…
Side-force detection in an input device having a capactive sensor
Granted: May 23, 2023
Patent Number:
11656712
An example a method of detecting a force applied to a side of an input device including sensor electrodes, the method including: detecting first capacitive responses corresponding to a first plurality of sensor electrodes disposed near the side of the input device; detecting second capacitive responses corresponding to a second plurality of sensor electrodes disposed near a center of the input device; and determining a magnitude of the force applied to the side of the input device based…
System and method for voltage generation
Granted: May 16, 2023
Patent Number:
11650615
A voltage generator circuitry includes first to third bipolar transistors having commonly-connected base electrodes, first and second current mirror circuitries, first and second differential amplifiers; a first resistor; and a current-voltage conversion circuitry. The first current mirror circuitry supplies currents to the first to third bipolar transistors and to the current-voltage conversion circuitry. The second current mirror circuitry supplies currents to the first to third…
Device and method for receiver offset calibration
Granted: May 9, 2023
Patent Number:
11646915
An integrated circuit includes a plurality of signal inputs, a receiver, calibration circuitry, and input switch circuitry. The receiver includes differential input terminals. The calibration circuitry is configured to calibrate an input offset between the differential input terminals of the receiver in response to the integrated circuit being placed in a calibration mode. The input switch circuitry is configured to switch electrical connections between the plurality of signal inputs and…
Device and method for receiver offset calibration
Granted: May 9, 2023
Patent Number:
11646915
An integrated circuit includes a plurality of signal inputs, a receiver, calibration circuitry, and input switch circuitry. The receiver includes differential input terminals. The calibration circuitry is configured to calibrate an input offset between the differential input terminals of the receiver in response to the integrated circuit being placed in a calibration mode. The input switch circuitry is configured to switch electrical connections between the plurality of signal inputs and…
Attention cues for head-mounted display (HMD)
Granted: May 9, 2023
Patent Number:
11644895
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…
System and method for synchronizing sensing signals of integrated circuit chips
Granted: May 9, 2023
Patent Number:
11644862
A system and method for synchronizing multiple integrated circuit (IC) chips for an input device having a display device integrated with a capacitive sensing device. A first one of the IC chips is a master IC chip and a second one of the IC chips is a slave IC chip. The master IC chip is configured to transmit synchronization signals to and from the slave IC chip, such that capacitive frames are acquired by each of the IC chips at substantially the same time, the initiation of the…
Attention cues for head-mounted display (HMD)
Granted: May 9, 2023
Patent Number:
11644895
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…
System and method for synchronizing sensing signals of integrated circuit chips
Granted: May 9, 2023
Patent Number:
11644862
A system and method for synchronizing multiple integrated circuit (IC) chips for an input device having a display device integrated with a capacitive sensing device. A first one of the IC chips is a master IC chip and a second one of the IC chips is a slave IC chip. The master IC chip is configured to transmit synchronization signals to and from the slave IC chip, such that capacitive frames are acquired by each of the IC chips at substantially the same time, the initiation of the…
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…
