System and method for synchronizing sensing signals of integrated circuit chips
Granted: April 20, 2021
Patent Number:
10983553
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…
Displays utilizing LEDs as sensing elements
Granted: April 13, 2021
Patent Number:
10977987
Display systems, devices and methods that utilize one or more native display elements as photo-sensing elements to detect light. A display device includes a plurality of light-emitting diode (LED) pixel elements arranged in an array having a plurality of columns and a plurality of rows, and a control circuit configured to selectively activate a first LED pixel element to emit light, and simultaneously activate a second LED pixel element to detect light.
Gate select signal with reduced interference
Granted: April 13, 2021
Patent Number:
10977980
A processing system for a display device comprises a display driver configured to generate a gate select signal and output the gate select signal to gate select control circuitry to be driven on gate lines for display updating. The gate select signal comprises a transition from a first voltage to a second voltage, a transition from the second voltage to a third voltage, and a transition from the third voltage to the first voltage. The second voltage is greater than the first voltage and…
Conductive guides for proximity sensing devices
Granted: April 13, 2021
Patent Number:
10976876
An input device includes a plurality of sensor electrodes and a conductive guide. The sensor electrodes may be configured to sense an electric field within a sensing region. A first portion of the conductive guide may be configured to contact an input object outside the sensing region. A second portion of the conductive guide may be configured to interact with the electric field. The input device may include a processing system couple to the plurality of sensor electrodes to evaluate the…
Acoustic locationing for smart environments
Granted: April 13, 2021
Patent Number:
10976432
Systems and methods for performing operations based on acoustic locationing are described. An example device includes one or more microphones configured to sense sound waves propagating in an environment. The example device also includes one or more processors and one or more memories coupled to the one or more processors. The one or more memories store instructions that, when executed by the one or more processors, cause the device to recover sound wave information from the sensed sound…
Method and system for measuring a phase baseline estimate of an input device
Granted: April 6, 2021
Patent Number:
10969894
An input device may include various sensor electrodes that define various sensor pixels. The input device may further include a processing system coupled to the sensor electrodes. The processing system may obtain a first resulting signal and a second resulting signal from the sensor electrodes. The processing system may determine, using the first resulting signal, an in-phase estimate of a phase delay at a sensor pixel among the sensor pixels. The processing system may determine, using…
Device and method for data reception
Granted: April 6, 2021
Patent Number:
10972317
A receiver device comprises one or more differential receivers configured to respectively output single ended signals, one or more delay compensation circuitries configured to delay the single ended signals, clock recovery circuitry configured to generate a recovered clock signal based on a compensated single ended signals respectively outputted from the delay compensation circuitries, and one or more latch circuitries configured to respectively latch the compensated single ended signals…
Systems and methods for biometric recognition
Granted: April 6, 2021
Patent Number:
10970516
Disclosed are systems and methods that include a device for updating biometric data in an enrollment data set. The device includes a biometric sensor and a processor. The processor is configured to reject an authentication attempt based on a biometric input from the biometric sensor failing a first match determination, accept an additional authentication attempt based on an additional biometric input from the biometric sensor passing an auxiliary match determination, and update a…
System and method for correcting distortions in a biometric image
Granted: April 6, 2021
Patent Number:
10970511
A system and method for correcting distortions within a biometric image. The biometric image is generated from first sensor data acquired from a sensing device. The first sensor data may include distortions generated in response to a change in distance or tilt between elements of a corresponding electronic device. Further, second sensor data corresponding to a calibration image is acquired from the sensing device. A corrected biometric image is generated based at least in part on the…
Single-layer capacitive image sensor
Granted: April 6, 2021
Patent Number:
10969916
A capacitive sensing array includes a first transmitter electrode, a plurality of first receiver electrodes, a second transmitter electrode, and a plurality of second receiver electrodes disposed in a first row of the array. The first transmitter electrode is disposed in a first column of the array and is coupled to a first transmitter channel. The first receiver electrodes are disposed in a second column of the array, adjacent the first transmitter electrode, and are coupled to a…
Mute mechanism with reduced pop noise in audio amplifier systems and methods
Granted: March 30, 2021
Patent Number:
10965253
Systems and methods are provided for improved noise performance of audio amplifiers. In one example, a system includes a multistage amplifier comprising at least a first stage amplifier and a second stage amplifier. The system further includes a plurality of switches disposed within the multistage amplifier to configure the multistage amplifier. The system further includes a control signal configured to control the multistage amplifier to a normal amplification mode or a mute state,…
360-degree multi-source location detection, tracking and enhancement
Granted: March 23, 2021
Patent Number:
10957338
Audio processing systems and methods comprise an audio sensor array configured to receive a multichannel audio input and generate a corresponding multichannel audio signal and a target activity detector configured to identify audio target sources in the multichannel audio signal. The target activity detector includes a VAD, an instantaneous locations component configured to detect a location of a plurality of audio sources, a dominant locations component configured to selectively buffer…
Input device having reduced electromagnetic interference
Granted: March 23, 2021
Patent Number:
10955967
An input device comprises a plurality of data lines of a display panel, a plurality of sensor electrodes, and a processing system. The processing system drives a sensor electrode with a sensing signal during a first portion of a non-display update period of a display frame. A source driver of the processing system drives a data line with a first constant voltage during at least one of a second portion of the non-display update period and a third portion of the non-display update period.…
Method and system for optical imaging using point source illumination
Granted: March 23, 2021
Patent Number:
10955603
Disclosed are systems and methods for imaging an object. For example, an optical sensor for imaging an input object, comprises: a sensor substrate comprising detector pixels; a scattering layer; a cover layer including a sensing surface, wherein the scattering layer is disposed between the sensor substrate and the cover layer; and, a light source. The optical sensor is configured to: illuminate the light source causing light beams to emanate from the light source to produce an effect of…
Single-layer sensor array scan
Granted: March 16, 2021
Patent Number:
10949034
A method of performing a scan of a sensor array is disclosed, as well as an associated processing system and input device. The sensor array comprises a plurality of sensor electrodes in a single layer. A plurality of routing traces is arranged in the single layer. The method comprises, for each sensor electrode of the plurality of sensor electrodes, acquiring, during a first period, an absolute capacitive measurement for the sensor electrode. The method further comprises, for each…
Spatially encoded sensor electrodes
Granted: March 9, 2021
Patent Number:
10942608
A capacitive sensing device has a first plurality of sensor electrodes, and a second plurality of sensor electrodes overlapping the first plurality of sensor electrodes. A first sensor electrode of the second plurality of electrodes overlaps a first subset of the first plurality of electrodes and comprises apertures disposed according to first codes. The first codes comprise first and second coefficients and along one of the first plurality of sensor electrodes. Each aperture may…
Balanced stereo headphones with un-balanced air chambers
Granted: March 9, 2021
Patent Number:
10945058
Speaker performance may be improved by increasing the effective acoustic chamber volume by fluidically connecting a speaker chamber containing a speaker with a mechanical housing. Additionally, the performance of left and right speakers may be balanced. Such balancing may be through equalization of the left and right speakers, balancing the acoustic impedance through sizing the openings between the speaker chambers and mechanical housings, and/or balancing of acoustic volumes within the…
Display device having an integrated sensing device with reduced interference
Granted: March 9, 2021
Patent Number:
10944389
A processing system for an input device comprises drive circuitry configured to generate a fixed voltage for a common voltage electrode of the input device during a display update period, and generate a sensing signal for the common voltage electrode during an input sensing period, the sensing signal having a duty cycle and a mean value, wherein the duty cycle minimizes a difference between the fixed voltage and the mean value. An input device comprises one or more common voltage…
Semiconductor device and method for driving a display panel
Granted: March 9, 2021
Patent Number:
10943542
A semiconductor device comprises circuitry and a timing generator. The circuitry is configured to generate an emission control signal that controls light emission of pixels of a display panel such that a first vertical sync period comprises a plurality of control cycles for the light emission of the pixels. The timing generator is configured to, when a length of the first vertical sync period is changed, start a next vertical sync period following the first vertical sync period at timing…
Device and method for gate driving of display panel
Granted: March 9, 2021
Patent Number:
10943522
A display device comprises a display panel and a display driver. The display panel comprises a plurality of gate lines. The display driver is configured to control, based on a first image data, an order in which the plurality of gate lines are driven.
