Device and method for mura compensation
Granted: November 30, 2021
Patent Number:
11189222
A display driver includes image processing circuitry and driver circuitry. The image processing circuitry is configured to process image data for a plurality of pixel circuits of a display panel. The image processing circuitry includes a demura table comprising one or more base compensation values associated with each of the plurality of pixel circuits, and a lookup table (LUT) comprising one or more compensation coefficients associated with each of a plurality of frame rates. Processing…
Automative knob sensing device
Granted: November 30, 2021
Patent Number:
11188161
An electronic device includes 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…
Protection of speaker from excess excursion
Granted: November 23, 2021
Patent Number:
11184705
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…
Method and system for securing in-vehicle ethernet links
Granted: November 23, 2021
Patent Number:
11184177
A method and system for securing in-vehicle ethernet links are disclosed. According to one embodiment, a method comprises receiving from an authenticator, via an insecure channel, a public key of the authenticator, a random number, and a challenge. A private key of the peer that was supplied to the peer is accessed from local storage at the peer. A state machine computes a session key for the peer, based on the random number, the public key of the authenticator, and the private key of…
Device and method for mura correction
Granted: November 23, 2021
Patent Number:
11183126
A display driver comprises a first memory configured to store mura correction data image processing circuitry configured to perform mura correction on image data to be displayed on a display panel based on the mura correction data received from the first memory, and control circuitry configured to detect a first error in the mura correction data received from the first memory. The control circuitry is further configured to control a communication with a second memory storing the mura…
Compensation technology for display panel
Granted: November 23, 2021
Patent Number:
11183101
A display driver comprises: digital gamma circuitry configured to generate a voltage data based on an image data for a pixel of interest; compensating circuitry configured to calculate a total current of the display panel; and correction circuitry. The correction circuitry is configured to correct the voltage data, based on the calculated total current.
Systems and methods for detecting ambient light or proximity with an optical sensor
Granted: November 16, 2021
Patent Number:
11175177
A method for determining an amount of ambient light illumination is disclosed. The method includes: estimating a contribution per color component in an optical sensing region of an input frame to be displayed on a display device, wherein the optical sensing region corresponds to a location of an optical sensor in the display device, wherein the input frame comprises digital information for each color component for each pixel of the input frame; causing the optical sensor to detect an…
IC chip layout for minimizing thermal expansion misalignment
Granted: November 16, 2021
Patent Number:
11177229
An integrated circuit (IC) chip comprises a plurality of pads and a plurality of bumps. The plurality of pads includes a first pad. The plurality of bumps is disposed on the plurality of pads. The plurality of bumps includes a first bump disposed on the first pad. The first bump as a width that is different than an exposed with of the first pad. The center of the first bump is not aligned with a center of the first pad.
Device and method for driving display panel
Granted: November 16, 2021
Patent Number:
11176899
A display driver comprises image processing circuitry and drive circuitry. The image processing circuitry is configured to output display image data representing a display image comprising an effective area to be displayed in a display area of a display panel and an invalid area not to be displayed in the display area. The drive circuitry drives the display panel based on the display image data comprising effective pixel data associated with first pixels included in the effective area…
Device and method for display module calibration
Granted: November 16, 2021
Patent Number:
11176859
A method comprises acquiring measured luminance levels at a measurement point of a display area for a plurality of test images displayed in the display area, and estimating one or more luminance levels at one or more corresponding luminance estimation points of the display area using the measured luminance levels. The method further comprises determining, based on the one or more estimated luminance levels, a correction parameter using the estimated one or more luminance levels.
Integrated circuit device and electronic device
Granted: November 9, 2021
Patent Number:
11171111
An integrated circuit device comprises: a resin film that is flexible; a plurality of traces bonded on a surface of the resin film and arrayed in a specific direction; an IC chip bonded on the surface of the resin film, located offset to the traces in a direction perpendicular to the specific direction, and connected to the traces; and a protection pattern formed on the surface of the resin film, located in the specific direction with respect to a disposition region in which the IC chip…
Device and method for controlling a display panel
Granted: November 9, 2021
Patent Number:
11170692
The display driver includes control circuitry and signal supply circuitry. The control circuitry is configured to store a first setting table for a first frame rate and a second setting table for a second frame rate. The control circuitry is further configured to, in response to adjusting a frame rate of a display device from the first frame rate to the second frame rate, generate an interpolated control parameter through interpolation of a first control parameter obtained from the first…
Device and method for addressing unintended offset voltage when driving display panel
Granted: November 2, 2021
Patent Number:
11164527
A processing system comprises a plurality of output terminals connectable to data lines of a display panel and a plurality of output amplifiers configured to output a plurality of drive voltages, respectively. The drive voltages have the same polarity. The processing system further comprises first switch circuitry configured to connect a first output terminal of the plurality of output terminals to a selected one of the plurality of output amplifiers.
Mitigating artifacts associated with long horizontal blank periods in display panels
Granted: November 2, 2021
Patent Number:
11164511
A display panel includes a first scan driving circuit, a second scan driving circuit, and a third scan driving circuit. The first scan driving circuit is configured to generate a first gate scan signal to control programming of a first display line in a first horizontal sync period that includes a long horizontal blank (LHB) period. The second scan driving circuit is configured to generate a first dummy gate scan signal to control initialization of a second display line in the LHB period…
Device and method for color gamut adjustment
Granted: November 2, 2021
Patent Number:
11164500
A display driver comprises color gamut adjustment circuitry and drive circuitry. The color gamut adjustment circuitry is configured to generate an in-use parameter set based on a plurality of parameter sets corresponding to different color gamuts and a position of a target pixel and generate an output pixel data by performing color gamut adjustment processing on an input pixel data of the target pixel based on the in-use parameter set. The drive circuitry is configured to drive a display…
Excitation schemes for an input device
Granted: November 2, 2021
Patent Number:
11163406
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…
Piezoresistive sensing input device
Granted: October 26, 2021
Patent Number:
11157106
A system and method for input sensing comprises a display device having at least one piezoresistive sensing transistor. During a first period, a first resulting signal is received with a first data line by driving a first piezoresistive sensing transistor of a first subpixel of the display device with a first select signal. The first resulting signal corresponds to a change in resistance of the first piezoresistive sensing transistor. Further, at least one of force information and…
Duty cycle corrector and converter for differential clock signals
Granted: October 26, 2021
Patent Number:
11159152
Various techniques are provided to correct the duty cycles and convert differential clock signals in synchronized systems. In one example, a method includes receiving an input differential clock signal having a distorted duty cycle. The method also includes adjusting the input differential clock signal to provide an output differential clock signal with a corrected duty cycle. The adjusting is performed in response to signals provided by a differential amplifier and a common mode…
Waveform generation circuit for finely tunable sensing frequency
Granted: October 26, 2021
Patent Number:
11159150
Embodiments disclosed herein generally relate to electronic devices, and more specifically, to a waveform generation circuit for input devices. One or more embodiments provide a new waveform generator for an integrated touch and display driver (TDDI) and methods for generating a waveform for capacitive sensing with a finely tunable sensing frequency. A waveform generator includes accumulator circuitry, truncation circuitry, and saturation circuitry. The accumulator circuitry is…
Multi-stream target-speech detection and channel fusion
Granted: October 26, 2021
Patent Number:
11158333
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…
