2339 results about "Pixel array" patented technology

The invention discloses a spectral polarization imaging three-dimensional reconstruction method and device based on a pixel array, and a medium, and relates to the technical field of image processing, and the method mainly comprises the steps: collecting original images, which are fixedly obtained by pixels, of corresponding spectral bands and polarization angles; extracting sub-image information under each spectral band and polarization angle according to pixel positions, and stacking to generate a four-dimensional data volume; constructing a polarization geometric model according to the four-dimensional data body, and constructing an actual expression of the linear polarization degree in combination with a Fresnel reflection theory; constructing a redundant dispersion constraint equation and a theoretical expression of the relation between the diffuse reflection spectrum polarization degree and the incident angle and the imaging target refractive index; substituting the redundant dispersion constraint equation into a combined residual function of the theoretical expression and the actual expression, and performing parameter inversion on the combined residual function; and carrying out three-dimensional shape recovery under imaging target surface normal reconstruction based on an inversion result. According to the method, time delay and space registration errors caused by time-sharing acquisition are eliminated.

A pixel array and an image sensor including the pixel array are provided. The pixel array included in the image sensor includes a plurality of pixels arranged in a matrix, and a plurality of column lines each commonly connected to pixels arranged on a same column from among the plurality of pixels. Each of the plurality of pixels includes four subpixels. Each of the four subpixels includes four photoelectric conversion devices; a floating diffusion region storing electric charges generated by the four photoelectric conversion devices; and four transmission gates configured to transmit the electric charges generated by the four photoelectric conversion devices to the floating diffusion region. Four floating diffusion regions included in the four subpixels are electrically connected to one another via internal wiring. Each of the plurality of pixels further includes a reset gate, a first driving gate and a first selection gate.

Various structures for a hybrid pixel array are disclosed. The hybrid pixel array includes a combination of square photodiode (PD) pixel structures and split PD pixel structures. Square PD pixel structures include one photodiode per pixel unit while split PD pixel structures include two photodiodes per pixel unit. In certain instances, square PD pixel structures are used for green light pixels and split PD pixel structures are used for blue and red light pixels in the hybrid pixel array. The combination of square PD pixel structures and split PD pixel structures provides autofocus capability with higher signal strengths. Various techniques for row addressing and readout from the hybrid pixel array are also disclosed.

The resolution-customizable micro spectrometer based on the transverse dispersion metasurface comprises a dispersion metasurface array structure and a focal plane pixel array, and the dispersion metasurface array structure comprises a plurality of dispersion metasurface sub-arrays which are distributed in an array mode and used for preliminary spectrum decoupling and directional convergence. The dispersion metasurface subarray comprises a plurality of dispersion metasurface units and all-dielectric substrates thereof, the dispersion metasurface units are nano-columns with four-fold symmetry, the nano-columns are periodically arranged, and the phase of transmission light is dynamically regulated and controlled according to the frequency omega of incident light. The focal position (x ', y') of the transmission light on the focal plane is in a linear mapping relation along with the change of the omega; the focal plane pixel array comprises a multi-element plane array composed of a plurality of pixels, and the multi-element plane array is in pixel-level registration with the dispersion metasurface sub-array. According to the invention, pixel-level precise condensation is realized, crosstalk is effectively inhibited, the detection precision is improved, and real snapshot spectral imaging is realized.

A display device with a touch detection function that can be manufactured while suppressing price increases. The display device includes: a pixel array; a plurality of drive electrodes; a plurality of detection electrodes; first and second drive wiring lines, each facing one end and the other end of the plurality of drive electrodes and supplying an AC voltage thereto; first and second reference voltage wiring lines, each facing one end and the other end of the plurality of drive electrodes and supplying a first reference voltage thereto, wherein the first reference voltage wiring line is farther from the one end of the plurality of drive electrodes than the first drive wiring line, and the second reference voltage wiring line is farther from the other end of the plurality of drive electrodes than the second drive wiring line; a plurality of first switch circuits, each coupling one end of the drive electrodes to one of the first drive wiring line and the first reference voltage wiring line; and a plurality of second switch circuits, each coupling the other end of the drive electrodes to one of the second drive wiring line and the second reference voltage wiring line.

A light detection apparatus according to an embodiment of the present disclosure includes a semiconductor substrate, a light receiver, a trench, a multiplier that is a first electrically-conductive type, and a contactor. The semiconductor substrate has a first surface and a second surface facing each other, and has a pixel array in which a plurality of pixels is disposed into an array shape in an in-plane direction. The light receiver is provided inside the semiconductor substrate for each of the pixels, and generates, through photoelectric conversion, carriers in accordance with an amount of light received. The trench is provided, for each of the pixels, to the first surface of the semiconductor substrate. The multiplier that is the first electrically-conductive type is provided to a bottom surface of the trench, and allows the carriers generated in the light receiver to undergo avalanche multiplication. The contactor includes an electrically-conductive material buried in the trench, and is in contact with the multiplier.

The invention provides a Mini led display screen dead pixel detection and positioning method, device and system based on deep learning, and the method comprises the steps: applying a preset driving signal sequence to a pixel array of a Mini led display screen line by line, obtaining the brightness feedback data of each pixel in different driving stages, obtaining a brightness response sequence, and carrying out the detection and positioning of the dead pixel of the Mini led display screen. Carrying out spatial recombination processing on the brightness response sequence according to a physical arrangement structure of the pixel array to generate a brightness response matrix, carrying out local region feature difference analysis on the brightness response matrix, identifying a brightness response abnormal region, generating a candidate dead pixel position set, and obtaining a candidate dead pixel position set; and calling a pre-trained dead pixel recognition network to carry out feature learning processing on the candidate dead pixel position set, outputting a dead pixel probability corresponding to each candidate dead pixel position, screening the candidate dead pixel position set based on the candidate dead pixel probability, removing candidate positions with the dead pixel probability lower than a preset condition, and generating a dead pixel positioning result set. According to the invention, the accuracy and reliability of detecting and positioning the defective pixels of the Mini LED display screen can be effectively improved.

An event-based vision sensor is provided. The event-based vision sensor comprises an event-based vision sensor pixel array, an always-on row scanner, an always-on column scanner, a major row scanner and a major column scanner. The event-based vision sensor pixel array comprises a plurality of always-on pixels and a plurality of major pixels. The always-on row scanner and the always-on column scanner are for the plurality of always-on pixels. The major row scanner and the major column scanner are for the plurality of major pixels. When the event-based vision sensor is configured to be operated in an always-on mode, the plurality of major pixels are powered down, and the plurality of always-on pixels, the always-on row scanner and the always-on column scanner are in operation.

An analog-to-digital converter circuit according to some example embodiments includes a ramp signal generator configured to generate a first ramp signal which rises with a first inclination and a second ramp signal which falls with a second inclination, and a comparison circuit configured to output a comparison result between the synthesis signal of a pixel signal output from a pixel array and the first ramp signal and the second ramp signal.

An image sensor may include an array of imaging pixels arranged in rows and columns. Each imaging pixel may include a photodiode, an overflow capacitor, an overflow transistor that is interposed between the photodiode and the overflow capacitor, a floating diffusion region, a transfer transistor that is interposed between the photodiode and the floating diffusion region, a voltage supply, and a reset transistor that is interposed between the floating diffusion region and the voltage supply. The voltage supply may provide a voltage at a first magnitude that is less than the pinning voltage for a first portion of a reset period and may provide the voltage at a second magnitude that is greater than the pinning voltage for a second portion of the reset period.

The invention provides a display panel and a display device, and belongs to the technical field of display driving. The display panel comprises a gate drive unit and a frequency division unit, a display area of the display panel comprises a pixel array composed of a plurality of pixel circuits arranged in an array mode, the gate drive unit comprises a plurality of cascaded gate drive circuits, and each gate drive circuit is connected with one row of pixel circuits. The frequency division unit comprises a plurality of frequency division circuits, and the pixel circuit is used for refreshing and displaying according to a driving signal output by the gate driving circuit. And at least one frequency dividing circuit is arranged between each gate driving circuit and the pixel circuit. The frequency division unit is used for controlling the pixel circuits in partial areas of the display area to input driving signals through the frequency division circuits during the display period of one frame of image, and the pixel circuits in other areas do not input the driving signals, so that the pixel circuits in different areas in the display area carry out display at different refresh rates. Therefore, balance of the refresh rate and the power consumption of the display panel can be realized.

The invention relates to the technical field of optical detection, and discloses an object surface three-dimensional topography measurement method based on optical interference, which comprises the following steps: acquiring a mixed time domain interference signal sequence in an axial scanning process; extracting seed pixels and constructing a spatial topology connectivity feature matrix; introducing fractional Fourier transform, and constructing a joint decoupling objective function containing a frequency domain nonlinear phase distortion evaluation index and a time domain physical invariant evaluation index; executing multi-stage optimization for the seed pixels, and locking a global optimal rotation angle; array self-adaptive decoupling is executed in combination with the spatial topology connectivity feature matrix, and an optimal rotation angle matrix is generated; and performing signal decoupling and reconstruction on the mixed signal, and extracting the absolute surface height of each pixel point to generate three-dimensional shape data. According to the invention, through multi-dimensional joint decoupling and spatial prior constraint, the problem of phase decoupling caused by film interference aliasing is solved, and the calculation overhead of a large-pixel array is reduced while the measurement precision is improved.

The invention provides an ultrasonic fingerprint pixel array circuit and an ultrasonic fingerprint data processing method. Based on the ultrasonic fingerprint pixel array circuit, a corresponding fingerprint pixel unit can be determined in a first position area of the ultrasonic fingerprint pixel array circuit and transformed into a first detection unit capable of locally generating an integral clock signal; meanwhile, a corresponding fingerprint pixel unit determined in a second position area of the ultrasonic fingerprint pixel array circuit is transformed into a second detection unit which can be matched with the first detection unit to carry out self-adaptive feedback adjustment on the generated integral clock signal. Therefore, the improved ultrasonic fingerprint pixel array circuit capable of automatically generating the integral clock signal matched with the ultrasonic fingerprint echo signal can be constructed by fully utilizing the original circuit structure of the ultrasonic fingerprint pixel array circuit at relatively low cost. Therefore, the ultrasonic fingerprint pixel array circuit can be utilized to efficiently and locally generate an integral clock signal with a better effect to process an ultrasonic fingerprint echo signal.

The invention discloses a Micro-LED chip array integrated with a homogeneous micro-lens array and a preparation method thereof, and the method comprises the steps: carrying out the wafer-level precise bonding of a Micro-LED light-emitting pixel array and a CMOS drive circuit substrate, removing a substrate, integrating a homogeneous pixel-level GaN micro-lens array on a GaN-based pixel array through the photoetching, hot melting backflow and dry etching technologies, and carrying out the precise bonding of the micro-LED light-emitting pixel array and the CMOS drive circuit substrate. And finally, realizing the full-pixel common cathode conduction of the Micro-LED chip by adopting a metal interconnection process. According to the method, the Micro-LED pixel array and the micro-lens array are homogeneously integrated, are made of the same material and have no refractive index difference, so that no Fresnel loss exists on an interface, and the light extraction efficiency of a chip is improved. In addition, the method is simple in manufacturing process, low in cost, good in chip structure reliability, high in stability and suitable for being applied to industrial chip manufacturing.

A method and device for implementing high-dynamic range imaging, and an image processing system are provided. The device includes: an image sensor, a pixel array in the image sensor including a plurality of pixel units; and a column processing unit, including a gain control unit and an analog-to-digital conversion unit; where each pixel unit includes two photoelectric conversion units with different photosensitivity; and the gain control unit is configured to determine a brightness range of an image based on a signal voltage output by each pixel unit, and select the photoelectric conversion unit for signal conversion in each pixel unit, a charge-to-voltage conversion gain of each pixel unit and a voltage gain of the column processing unit based on the brightness range. With the method, device and system, the signal voltage allows to be read out only once, thereby shortening row readout time and increasing a frame rate.

We present a ground-based laser system for searching, ranging, and tracking that actively illuminates small resident space objects (RSOs) in low Earth orbit (LEO) and observes position and transit-time of reflections, enabling orbital custody of most one-to-few centimeter-sized objects. A diode-pumped alkali laser (DPAL) augmented with mode-locking and Q-switching serves as an illuminator and offers exceptionally high spectral brightness due to its output beam's sub-nanosecond pulse duration and picometer-level spectral linewidth. Kilohertz fast-rastering enables interrogations of distinct few-meter-sized sky-patches at megahertz rates. Paired on the observation side with one or more telescopes outfitted with Faraday anomalous dispersion optical filters (FADOFs), image intensifiers, multi-pixel arrays, and nanosecond timing, the combined system could offer nearly background-free discoveries of RSOs every hour, even during daytime. Periodically re-flashing previously discovered objects to maintain orbit custody expends only a small fraction of total observing time.

This light detection device comprises: a first chip and a second chip that are laminated so as to be electrically connected to each other; a pixel array that is provided to the first chip and includes a plurality of pixels each including a photoelectric conversion unit; and a circuit unit that is provided to the second chip and is electrically connected to the pixel array of the first chip. The plurality of pixels include imaging pixels for detecting visible light and ranging pixels for detecting ranging light. The pixel array includes an imaging pixel array including a plurality of imaging pixels arranged at least in the column direction, and a ranging pixel array including a plurality of ranging pixels arranged at least in the column direction. The circuit unit includes an imaging circuit electrically connected to the imaging pixel array, and a ranging circuit electrically connected to the ranging pixel array.

The present disclosure provides an image sensor and a high dynamic range adaptive imaging method wherein the image sensor comprises: a pixel array comprising a photodiode acquisition circuit arranged in an array and photogenerating an image charge signal in response to incident light, the photodiode acquisition circuit comprising a dual conversion gain transistor and a row selection transistor; the pre-reading module is used for receiving initial sampling of the pixel photoelectric response signal before the reading stage and comparing the initial sampling with a threshold signal to generate a control signal; the reading module is used for driving the photodiode acquisition circuit according to the control signal and only reading the pixel electric signal under the selected path for output; and the synthesis module is used for generating a path label corresponding to the pixel electric signal and synthesizing a picture. According to the invention, the method can achieve the quick pre-reading judgment before the reading stage, thereby determining the optimal signal gain mode for output, effectively improving the frame rate, reducing the power consumption, and achieving the optimization of a dynamic range.

The invention relates to the technical field of industrial early warning, in particular to a canned container leakage point early warning device, a canned container leakage point early warning control method and a canned container leakage point early warning control device. The technical problem of how to acquire a thermal image in a non-contact manner, accurately determine the boundary of a thermal anomaly region and further analyze an anomaly reason in the prior art is solved. Comprising an infrared thermal imaging unit and a controller, the controller is in communication connection with the infrared thermal imaging unit and is configured to analyze a pixel array to identify a plurality of interconnected abnormal pixels, and the plurality of abnormal pixels jointly form an abnormal thermal feature with a determined boundary; classifying the anomalous thermal feature as a potential leakage point or a transient disturbance event based on one or more morphological characteristics derived from determining the boundary; an alarm signal is generated when the anomalous thermal feature is classified as a potential leakage point.

A display device includes a pixel array in which a plurality of data lines, a plurality of gate lines, and a plurality of pixel circuits are arranged; a data driver configured to output a data voltage to the plurality of data lines; a gate driver configured to sequentially output gate signals to the plurality of gate lines; a common line configured to simultaneously apply a common gate signal to the plurality of gate lines; and a timing controller configured to generate the common gate signal.

An image sensor includes a pixel array including pixels, and a peripheral circuit connected to the pixels. Each pixel includes a first photodiode, a second photodiode having a light-receiving area smaller than a light-receiving area of the first photodiode, and a pixel circuit connecting the first photodiode and the second photodiode to the peripheral circuit. The peripheral circuit obtains a first pixel signal by executing a first readout operation for each of the pixels after a first exposure time period, and obtains a second pixel signal by executing a second readout operation for a portion of the pixels after a second exposure time period that is shorter than the first exposure time period. The peripheral circuit generates first image data using the first pixel signal and second image data using the second pixel signal.

Provided is a display device including a pixel array including a plurality of pixels arranged in a matrix. Each pixel includes a pulse width modulation (PWM) circuit and an emission device; a data driver configured to provide pixel data to pixels arranged in a row of the pixel array; and a row driver configured to generate control signals and clock signals for driving the pixel array. The PWM circuit is configured to generate the PWM signal based on the control signals and the clock signals, the PWM signal including a plurality of bit fields respectively corresponding to a plurality of bits of the pixel data. The PWM circuit is further configured to, in a PWM period in which the PWM signal is output, distribute a first bit field of the PWM signal corresponding to a most significant bit (MSB) of the pixel data, among the plurality of bit fields.

A method of operating an image sensor having a pixel array is provided. The method can include outputting a row control signal to a row of pixels in the pixel array at a first time, sampling a first output signal from a first pixel in the row of pixels at a second time, and sampling a second output signal from a second pixel in the row of pixels at a third time after the second time. The row control signal can arrive at the first pixel in the row of pixels a first row propagation delay after the first time. The row control signal can arrive at the second pixel in the row of pixels a second row propagation delay after the first time. The difference between the second and third times may be equal to the difference between the first and second row propagation delays.

An image sensor according to the present technology has a layered structure that includes a first layer, a second layer, and a third layer. The first layer includes a pixel array unit where multiple pixels are two-dimensionally arrayed. The second layer includes a conversion processing unit configured to perform A / D conversion for converting an analog signal based on a pixel signal output from the pixel array unit, into a digital signal, and a second layer storage unit configured to store image data for each frame, the image data being digital data based on the digital signal. The third layer includes an inference processing unit configured to perform an inference process on the basis of the image data as an input tensor.

The invention relates to an Imaging sensor device in a stacked arrangement comprising:a pixel array tier comprising a plurality of pixel segments each having a plurality of pixels for photon detection each providing a digital pixel output;a processing tier comprising a number of processing cores each associated with one of the plurality of pixel segments to receive the pixel outputs of the pixels of the respective pixel segment, wherein the processing cores are each in bidirectional communication with one or more neighboring processing cores,wherein the processing cores are each configured to receive pixel outputs of the pixels of the associated pixel segments and to distribute processing of pixel outputs between the processing core and the at least one of the neighboring processing cores as neighboring processing cores.

The present disclosure provides a visual sensor. The visual sensor comprises: a target silicon base provided with a first pixel array layer and a second pixel array layer. The first pixel array layer is disposed on a front face of the target silicon base and is used for extracting an optical signal of a first wave band from incident light on the visual sensor. The second pixel array layer is disposed below the first pixel array layer and is used for extracting an optical signal of a second wave band which is transmitted by incident light onto the second pixel array layer. The optical signal of the first pixel array layer located in the first wave band penetrates through the depth range of the target silicon base. The optical signal of the second pixel array layer located in the second wave band penetrates through the depth range of the target silicon base. The penetration depth of the optical signal of the second wave band in the target silicon base is greater than the penetration depth of the optical signal of the first wave band in the target silicon base.

Advanced processing is performed in a chip. A stacked light-receiving sensor according to an embodiment includes a first substrate (100, 200, 300), a second substrate (120, 320) bonded to the first substrate, and connection wiring (402) bonded to the second substrate. The first substrate includes a pixel array (101) in which a plurality of unit pixels are arranged in a two-dimensional matrix. The second substrate includes a converter (17A) configured to convert an analog pixel signal output from the pixel array to digital image data and a processing unit (14) configured to perform a process for data based on the image data. At least a part of the converter is disposed on a first side in the second substrate. The processing unit is disposed on a second side opposite to the first side in the second substrate. The connection wiring is attached to a side other than the second side in the second substrate.

A solid-state imaging device includes: a pixel array in which a plurality of pixels are arranged in rows and columns; and a first power supply line. Each of the plurality of pixels includes a photoelectric converter, a floating diffusion, a capacitance accumulator, a first transfer transistor, an overflow transistor, a second transfer transistor, a first reset transistor, and an amplifier transistor. The solid-state imaging device further includes a resetter for resetting the floating diffusion and the capacitance accumulator at voltages different from each other.

To provide an imaging apparatus which enables sophisticated calculations to be realized at lower power. An imaging apparatus according to an embodiment of the present disclosure includes: a first substrate group in which is arranged a light source cell array portion configured to generate a light signal; and a second substrate group in which is arranged a pixel array portion configured to photoelectrically convert the light signal and output a pixel signal representing a result of a sum-of-product computation. The first substrate group and the second substrate group are stacked so that at least a part of the light source cell array portion overlaps with the pixel array portion.

A pixel array includes: unit pixel groups; and two column lines provided for each column. Each of the unit pixel groups includes rows, a first pixel group comprising a plurality of pixels, a second pixel group comprising a plurality of pixels. The first pixel group and the second pixel group are arranged in a row direction. A pixel signal is output by simultaneously reading out: unit pixel groups that are connected to a first column line and that do not share a first floating diffusion region, and unit pixel groups that are connected to a second column line different from the first column line and that do not share a second floating diffusion region. At least one of the first floating diffusion region and the second floating diffusion region is between a dual conversion transistor and a reset transistor.