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公开(公告)号：US12125447B2
公开(公告)日：2024-10-22
申请号：US18069074
申请日：2022-12-20
发明人： Masao Orio , Takashi Nose , Hirobumi Furihata , Tomoo Minaki , Kazutoshi Aogaki
IPC分类号： G09G3/34
CPC分类号： G09G3/342 , G09G2320/06 , G09G2360/16
摘要： A display driver includes a display panel, a backlight array, and backlight control circuitry. The backlight array includes a plurality of light sources and is configured to illuminate the display panel. The backlight control circuitry is configured to determine first base luminance for a first light source of the plurality of light sources based at least in part on pixel data for a first set of pixels associated with the first light source. The backlight control circuitry is further configured to determine first compensated luminance for the first light source by modifying the first base luminance based at least in part on a position of the first light source in the backlight array. The backlight control circuitry is further configured to control light emission of the first light source based at least in part on the first compensated luminance.
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公开(公告)号：US20240312472A1
公开(公告)日：2024-09-19
申请号：US18185977
申请日：2023-03-17
发明人： John USHER
摘要： This disclosure provides methods, devices, and systems for audio signal processing. The present implementations more specifically relate to speech enhancement techniques that utilize multi-channel audio signals for audio source classification. In some aspects, a speech enhancement system may include an adaptive filter, a feature extractor, and a feature classifier. The adaptive filter is configured to receive a multi-channel audio signal, via at least a first microphone and a second microphone, and determine a relative impulse response (ReIR) between the microphones based on the multi-channel audio signal. The feature extractor is configured to extract a set of features from the ReIR based at least in part on a peak of the ReIR. The feature classifier is configured to classify the set of features as being associated with a target source or a distractor source based on a Gaussian mixture model (GMM).
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公开(公告)号：US20240312436A1
公开(公告)日：2024-09-19
申请号：US18672326
申请日：2024-05-23
IPC分类号： G09G5/10
CPC分类号： G09G5/10 , G09G2320/0233 , G09G2320/0276 , G09G2320/0285 , G09G2320/046 , G09G2360/16
摘要： A display driver that includes image processing circuitry and a source driver. The image processing circuitry is configured to perform a burn-in compensation to determine a first compensated luminance value for a first pixel in a first area of a display panel based at least in part on a first accumulated luminance value for the first pixel. The first area has a first pixel layout. The image processing circuitry is further configured to scale a second accumulated luminance value for a second pixel in a second area of the display panel to determine a scaled accumulated luminance value. The second area has a second pixel layout different from the first pixel layout. The image processing circuitry is further configured to perform a burn-in compensation to determine a second compensated luminance value for the second pixel based at least in part on the scaled accumulated luminance value.
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公开(公告)号：US12094432B1
公开(公告)日：2024-09-17
申请号：US18205491
申请日：2023-06-02
CPC分类号： G09G3/3607 , G09G3/3426 , G09G2320/0233
摘要： A display device includes a display panel, a backlight module, and a display driver. The backlight module includes a plurality of light sources to illuminate a plurality of zones defined for the display panel. The display driver is configured to store a first light source arrangement type of a first zone of the plurality of zones. The first light source arrangement type is based on an arrangement of one or more light sources with respect to the first zone. The display driver is further configured to process first input pixel data for a first target pixel of the display panel based on the first light source arrangement type of the first zone to generate first output pixel data. The first target pixel is located in the first zone. The display driver is further configured to update the first target pixel based on the first output pixel data.
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公开(公告)号：US20240304204A1
公开(公告)日：2024-09-12
申请号：US18179149
申请日：2023-03-06
IPC分类号： G10L21/0232 , G10L25/18
CPC分类号： G10L21/0232 , G10L25/18 , G10L2021/02082 , G10L21/034 , G10L25/30
摘要： This disclosure provides methods, devices, and systems for audio signal processing. The present implementations more specifically relate to low-latency speech enhancement. In some aspects, a speech enhancement system may receive a number (B) of frames of a signal, where each of the B frames include a number (N) of time-domain samples. The speech enhancement system may transform the B*N time-domain samples into B*N first frequency-domain samples based on an N-point fast Fourier transform (FFT), and may further transform the B*N first frequency-domain samples into B*N second frequency-domain samples based on a B-point FFT. The speech enhancement system may determine a probability of speech in the signal based at least in part on the B*N second frequency-domain samples. In some implementations, the speech enhancement system may decimate the B*N second frequency-domain samples by a factor (D), and the probability of speech is determined based on the B*N/D decimated second frequency-domain samples.
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公开(公告)号：US12087020B2
公开(公告)日：2024-09-10
申请号：US17475853
申请日：2021-09-15
发明人： Matteo Naccari , Scott Liam Ransom
IPC分类号： G06T9/00 , H04N19/126 , H04N19/146 , H04N19/172 , H04N19/184
CPC分类号： G06T9/00 , H04N19/126 , H04N19/146 , H04N19/172 , H04N19/184
摘要： Systems and methods for controlling compression of image data by a quality controller include obtaining a desired target number of bits to be generated from compression of a current image area using a predetermined compression protocol, determining a calculated quantisation level based on the desired number of bits using a predetermined relationship between the number of bits and quantisation level, selecting a discrete quantisation level from a plurality of predetermined discrete quantisation levels based on the calculated quantisation level, determining a predicted number of bits that would result from compression of the current image area at the selected discrete quantisation level using the predetermined relationship, determining whether the predicted number of bits exceeds the desired number of bits and, if not, providing to an encoder information to enable the encoder to determine a set of compression parameters associated with the selected discrete quantisation level.
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公开(公告)号：US12057138B2
公开(公告)日：2024-08-06
申请号：US17571880
申请日：2022-01-10
IPC分类号： G10L25/84 , G10L21/0208 , G10L21/0216 , G10L25/78 , H04R3/00
CPC分类号： G10L25/84 , G10L21/0208 , H04R3/005 , G10L2021/02082 , G10L2021/02166 , G10L2025/786
摘要： Systems and methods for identifying audio events in one or more audio streams include the use of a cascade audio spotting system (such as a cascade keyword spotting system (KWS)) to reduce power consumption while maintaining a desired performance. An example cascade audio spotting system may include a first module and a high-power subsystem. The first module is to receive an audio stream from one or more audio streams, process the audio stream to detect a first target sound activity in the audio stream, and provide a first signal in response to detecting the first target sound activity in the audio stream. The high-power subsystem is to (in response to the first signal being provided by the first module) receive the one or more audio streams and process the one or more audio streams to detect a second target sound activity in the one or more audio streams.
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公开(公告)号：US20240259576A1
公开(公告)日：2024-08-01
申请号：US18632930
申请日：2024-04-11
IPC分类号： H04N19/196 , H04N19/127 , H04N19/14 , H04N19/182
CPC分类号： H04N19/196 , H04N19/127 , H04N19/14 , H04N19/182
摘要： This disclosure provides methods, devices, and systems for video compression. The present implementations more specifically relate to video compression techniques that account for spatial-temporal changes in pixel values. In some aspects, an encoder may determine a change importance factor (CIF) for each image tile of a current image to be encoded. The encoder may calculate the CIF for an image tile of the current image (the “current image tile”) based on a degree of variation among the pixel values in the current image tile, a degree of change between the current image tile and a respective image tile of a previously-encoded image (the “previous image tile”), and a degree of variation among the pixel values in the previous image tile. In some implementations, the encoder may determine whether to transmit each of the current image tiles to a receiving device based on the CIF associated with the respective image tile.
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公开(公告)号：US20240257303A1
公开(公告)日：2024-08-01
申请号：US18608582
申请日：2024-03-18
IPC分类号： G06T3/4046 , G06T5/70 , G06T7/90
CPC分类号： G06T3/4046 , G06T5/70 , G06T7/90
摘要： This disclosure provides methods, devices, and systems for low-light imaging. In some implementations, an image processor may be configured to reduce or remove noise associated with an image based, at least in part, on a neural network. For example, the neural network may be trained to infer a denoised representation of the image. In some aspects, the image processor may scale the brightness level of the image to fall within a normalized range of values associated with the neural network. In some other aspects, a machine learning system may scale the brightness levels of input images to match the brightness levels of ground truth images used to train the neural network. Still further, in some aspects, the machine learning system may scale the brightness levels of the input images and the brightness levels of the ground truth images to fall within the normalized range of values during training.
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公开(公告)号：US20240248541A1
公开(公告)日：2024-07-25
申请号：US18623288
申请日：2024-04-01
发明人： Patrick A. Worfolk
IPC分类号： G06F3/01 , G06F3/0354 , H01Q1/22 , H04B5/70
CPC分类号： G06F3/016 , G06F3/03547 , H01Q1/22 , H04B5/70
摘要： An input device is provided. The input device comprises a printed circuit board (PCB) assembly comprising: touch sensors configured to detect a user input from a user; a haptic coil configured to provide haptic feedback to the user in response to detecting the user input; and a near-field communication (NFC) antenna configured to facilitate NFC communications, wherein the haptic coil and the NFC antenna are on a same PCB of the PCB assembly.
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