Device and method for driving a self-luminous display panel
Granted: September 28, 2021
Patent Number:
11132952
A display driver comprises gamma processing circuitry, compensation circuitry, and driver circuitry. The gamma processing circuitry is configured to process the image data to generate gamma processed image data. The compensation circuitry is configured to process the gamma-processed image data, based on a ratio of a number of display elements that emit light to a total number of display elements of a display panel, to generate compensated image data. The driver circuitry is configured to…
Capacitive sensing acquisition schemes
Granted: September 21, 2021
Patent Number:
11126311
An input device including a sensing region is disclosed. The input device includes: sensor circuitry configured to: operate, during a first timeslot, electrodes as a first cluster; and operate, during a second timeslot, the electrodes as a second cluster, where the electrodes are aligned with an axis, and where at least one of the electrodes operates as a transmitter in the first cluster and as a receiver in the second cluster; and determination circuitry configured to: determine a first…
Device and method for capacitive sensing
Granted: September 21, 2021
Patent Number:
11126303
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…
Device and method for driving display in response to image data
Granted: September 14, 2021
Patent Number:
11120732
A display driver includes: a receiver configured to receive image data of each line of a display panel from an external device; a line latch circuit having a line latch configured to latch the image data of each line received by the receiver in response to a strobe signal; a driving circuit section which drives the display panel in response to the image data latched by the line latch; and a timing controller configured to generate the strobe signal. The receiver is configured to detect…
Head pose estimation
Granted: September 14, 2021
Patent Number:
11120569
A method and apparatus for estimating a user's head pose relative to a sensing device. The sensing device detects a face of the user in an image. The sensing device further identifies a plurality of points in the image corresponding to respective features of the detected face. The plurality of points includes at least a first point corresponding to a location of a first facial feature. The sensing device determines a position of the face relative to the sensing device based at least in…
Defensive measures for residue re-imaging
Granted: September 14, 2021
Patent Number:
11120247
An input device includes a fingerprint sensor and a processing system. The fingerprint sensor is configured to capture images of a sensing region of the input device. The processing system is configured to acquire a first image of the sensing region, where the first image includes one or more fingerprints. The processing system compares the first image with one or more adjunct templates to determine a similarity score for each of the one or more fingerprints. The processing system…
Fingerprint sensor and button combinations and methods of making same
Granted: September 14, 2021
Patent Number:
11119615
It will be understood by those skilled in the art that there is disclosed in the present application a biometric sensor that may comprise a plurality of a first type of signal traces formed on a first surface of a first layer of a multi-layer laminate package; at least one trace of a second type, formed on a second surface of the first layer or on a first surface of a second layer of the multi-layer laminate package; and connection vias in at least the first layer electrically connecting…
Background capacitance compensation
Granted: September 14, 2021
Patent Number:
11119606
A processing system comprises sensor circuitry and a baseline correction mechanism. The sensor circuitry comprises a receiver channel having an input configured to acquire a resulting signal from a sensor electrode. A background capacitance is formed between the sensor electrode and a conductive element. The baseline correction mechanism is coupled to the input of the receiver channel. The baseline correction mechanism comprises a resistive element configured to be driven with a…
Context-aware image processing
Granted: September 7, 2021
Patent Number:
11115562
A method and apparatus for image processing. An image scaling circuit is configured to receive image data for a plurality of pixels corresponding to a first image. The image data includes color information and a transparency value for each of the plurality of pixels. The image scaling circuit updates the image data by selectively changing the color information for one or more of the pixels based at least in part on the transparency values. In updating the image data, the image scaling…
Common mode noise suppression with restoration of common mode signal
Granted: August 31, 2021
Patent Number:
11106317
A processing system is disclosed. The processing system includes an amplifier configured to generate a feedback signal, including a spatial common mode estimate generated from spatial-common-mode-processed signals. The processing system further includes charge integrators configured to obtain resulting signals from capacitive sensor electrodes, the resulting signals including a spatial common mode. The charge integrators generate the spatial-common-mode-processed signals by mitigating…
Robust start-end point detection algorithm using neural network
Granted: August 24, 2021
Patent Number:
11100932
An end detector configured to receive the feature data and detect an end point of a keyword, and a start detector configured to receive an indication of the detected end point and process the feature data associated with corresponding input frames to detect a start point of the keyword. The start detector and end detector comprise neural networks trained through a process using a cross-entropy cost function for non-Region of Target (ROT) frames and a One-Spike Connectionist Temporal…
Temperature compensation and noise avoidance for resonator pen
Granted: August 24, 2021
Patent Number:
11099687
Methods and devices are disclosed for characterizing user inputs. A first input object may be detected in a sensing region of an input device. A resonance frequency of the first input object may be determined. A first characteristic may be assigned to the first input object based at least in part on the resonance frequency of the first input object. User inputs provided by the first input object may be processed based at least in part on the first input object characteristic.
Device and method for image processing in display driver
Granted: August 17, 2021
Patent Number:
11094240
A display driver comprises image processing circuitry and driver circuitry. The image processing circuitry is configured to receive spatial distribution information of a physical quantity related to a display panel. The image processing circuitry is further configured to generate output voltage data by processing input pixel data associated with subpixels of the pixel. The drive circuitry is configured to drive the display panel based on the output voltage data.
Transcapacitive and absolute capacitive sensing profiles
Granted: August 17, 2021
Patent Number:
11093093
A processing system includes a sensor module configured to receive first and second signals from first and second sensor electrodes, respectively, and generate a combination signal. The processing system further includes a determination module configured to determine, using the first sensor electrode, an absolute capacitive coupling to an input object; determine, using the first and second sensor electrodes, a transcapacitive coupling; determine a ratio of the absolute to transcapacitive…
Single layer sensor pattern and sensing method
Granted: August 17, 2021
Patent Number:
11093058
This disclosure generally provides an input device, electronic systems and processing system for touch sensing. In one example, an input device for touch sensing includes receiver electrodes and transmitter electrodes arranged in transmitter and receiver electrode columns. Each transmitter electrode within each transmitter electrode column is paired with two adjacent receiver electrodes of a first column of the receiver electrode columns. A first plurality of traces couple a first group…
System and method for voltage generation
Granted: August 17, 2021
Patent Number:
11092991
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…
Analog voice activity detector systems and methods
Granted: August 10, 2021
Patent Number:
11087780
A voice-activity detector (VAD) system comprises a microphone operable to receive and to process audio inputs from an environment to generate an analog audio input signal. The system further comprises an analog VAD operable to process the analog audio input signal to perform an initial detection of human speech, and operable to send a wake up command to a digital signal processing chain to awaken the digital signal processing chain from a sleep mode, when the analog VAD detects human…
Binary and multi-class classification systems and methods using one spike connectionist temporal classification
Granted: August 10, 2021
Patent Number:
11087213
A classification training system for binary and multi-class classification comprises a neural network operable to perform classification of input data, a training dataset including pre-segmented, labeled training samples, and a classification training module operable to train the neural network using the training dataset. The classification training module includes a forward pass processing module, and a backward pass processing module. The backward pass processing module is operable to…
Input sensing using overlapping code division multiplexing (CDM)
Granted: August 3, 2021
Patent Number:
11079889
Sensing systems and methods that utilize zero row sum code division multiplexing (CDM) drive matrices to reduce or eliminate radiative emissions. Measurements corresponding to an input received at a sensing region of the input device are obtained by driving a first subset of transmitters of the input device according to a first portion of a CDM drive matrix, wherein the CDM matrix is a zero row sum matrix, and obtaining first measurement signals with the plurality of receivers, and…
Audio source enhancement facilitated using video data
Granted: August 3, 2021
Patent Number:
11082460
Systems and methods for audio signal enhancement facilitated using video data are provided. In one example, a method includes receiving a multi-channel audio signal including audio inputs detected by a plurality of audio input devices. The method further includes receiving an image captured by a video input device. The method further includes determining a first signal based at least in part on the image. The first signal is indicative of a likelihood associated with a target audio…
