52 results about "Temporal multiplexing" patented technology

The invention relates to the technical field of video collection, in particular to a video synchronous collection method and device based on an optical far image, and provides the following scheme: obtaining a calibration image of to-be-synchronized content and a user posture parameter; calculating a geometric mapping matrix and a point spread function through the calibration image and a preset calibration sequence, and performing geometric predistortion and frequency domain compensation on the to-be-synchronized content to obtain a compensation frame; and combining with the rotation range predicted by the attitude parameters, generating a sub-frame sequence by adopting multi-view rendering of time multiplexing, and outputting the sub-frame sequence by a display end, so as to realize stable far-image watching experience under the condition of small desktop size. According to the scheme, visual fatigue caused by close gaze can be relieved, and the intelligent level of learning interaction is improved.

A compact grating-mirror magneto-optical trap (GMOT) cold atom inertial sensor head is disclosed. To make the sensor head compatible with the high vibration levels encountered in dynamic environments, the number of optical ports in the vacuum chamber is minimized and various components, including fixed optical components and a reflective grating chip, are hard mounted within the vacuum chamber. The use of the reflective grating chip reduces the number of optical ports required for cooling beams from six to one. The number of optical ports is further reduced by time multiplexing multiple beams passing through a given optical port.

The present disclosure relates to a system and a method of performing Gaussian boson sampling via time multiplexing correlation of squeezed vacuum states for quantum information experiments. One embodiment relates to a method for performing Gaussian boson sampling comprising the steps of—generating a set of pulsed pairs of squeezed vacuum states,—performing time 2024 / 038212 multiplexed correlation of multiple of such pairs of squeezed vacuum states,—measuring, via a homodyne detection, a state from the pairs of generated squeezed vacuum states,—feed-forwarding the homodyne result of the measured states to a displacement unit,—performing displacement operations on the remaining state from the pairs of generated squeezed vacuum states, and—counting the states output from the displacement unit.

The embodiment of the invention provides a magnetic resonance imaging method and related equipment. The magnetic resonance imaging method comprises the following steps: applying a multi-spin echo sequence in each magnetization reset period, and collecting a group of multi-spin echo data sets until M groups of multi-spin echo data sets are obtained; after each magnetization reset period, a T1rho preparation pulse with spin locking duration is applied, then a multi-gradient echo sequence is applied, a group of multi-gradient echo data sets are collected until M groups of multi-gradient echo data sets are obtained, and the M groups of multi-spin echo data sets and the M groups of multi-gradient echo data sets correspond to M different spin locking durations respectively; and performing fitting operation on the M groups of multi-spin echo data sets and the M groups of multi-gradient echo data sets to generate a quantitative atlas. According to the technical scheme, the problems that a traditional T1rho sequence is long in scanning time, low in signal-to-noise ratio and single in contrast ratio are effectively solved, and the technical effects of time multiplexing and multi-contrast imaging are achieved.

A method of generating foveated rendering using temporal multiplexing includes generating a first spatial profile for an FOV by dividing the FOV into a first foveated zone and a first peripheral zone. The first foveated zone will be rendered at a first pixel resolution, and the first peripheral zone will be rendered at a second pixel resolution lower than the first pixel resolution. The method further includes generating a second spatial profile for the FOV by dividing the FOV into a second foveated zone and a second peripheral zone, the second foveated zone being spatially offset from the first foveated zone. The second foveated zone and the second peripheral zone will be rendered at the first pixel resolution and the second pixel resolution, respectively. The method further includes multiplexing the first spatial profile and the second spatial profile temporally in a sequence of frames.

The application discloses a single-beam imaging device and method, and belongs to the technical field of microscopic imaging. The application adopts a single beam, utilizes the principle of time multiplexing continuous wave beam wavefront and fluorophore time suppression process, carries out time modulation between short time and long time, carries out wavefront modulation between excitation and suppression to realize imaging, simplifies the structure of the imaging device, and improves imaging super-resolution.

A kind of multi-path serial exchange FFT IP core based on time multiplexing constant multiplier belongs to digital signal processing technical field, solve existing time multiplexing constant multiplier when adapting MSC architecture FFT, there is the problem of collaborative conflict with serial exchange data scheduling, hardware resource redundancy, poor point number expansibility, timing and signal quality imbalance and lack of supporting efficient data permutation scheme, including multi-path serial exchange FFT architecture, the architecture includes: memory-based permutation module, a plurality of general rotator and at least two base modules, wherein k is positive integer;The rotator in the base module is optimized using time multiplexing constant multiplier, and the time multiplexing constant multiplier is used to implement the multiplication operation of fixed constant and variable input;The IP core supports the FFT calculation of point number 2 power exponent.This application is suitable for digital signal processing scene.

Various embodiments of the present disclosure are directed to a photonic circuit for a vector-matrix operation. A source pixel is configured to generate a light beam. An optical fan-out structure is configured to generate a plurality of copies of the light beam. A plurality of modulator pixels are configured to respectively transmit the plurality of copies with individual transmissivities to generate a plurality of transmitted light beams. A plurality of detector pixels are configured to accumulate charge respectively in response to the plurality of transmitted light beams. A controller is configured to control the source pixel and the plurality of modulator pixels to modulate an intensity of the light beam and the individual transmissivities to perform the vector-matrix multiplication operation. The intensity is modulated to temporally encode an input row vector, and the individual transmissivities are modulated to temporally encode corresponding column vectors of a weight matrix.

The present invention provides an efficient quantum memory for storing a quantum state of light, such as a photon, for a temporary period of time in a fibre-integrated optical cavity and then recall the quantum state of light and quantum information at a later time with a high probability of success. The present invention uses a nonlinear optical switching mechanism to modify at least one property of the quantum light, or cavity, to trap the quantum light in the optical cavity. Subsequent application of the nonlinear optical switching mechanism switches at least one property of the stored quantum light, or cavity, to release the quantum light from the optical cavity. The present invention also provides quasi-deterministic single-photon generation by temporal multiplexing of a photon pair source integrated within the cavity.

An electronic circuit includes: a main controller; and multiple modules; wherein the main controller includes: a timing signal generator arranged to generate a timing signal; and a data signal generator arranged to generate a data signal; wherein the main controller is arranged to generate a combined signal based on both the timing signal and the data signal; and wherein the main controller is arranged to broadcast the combined signal to the multiple modules. By broadcasting the timing signal and the data signal together to the modules, available bandwidth is effectively utilized without requiring numerous separate signal paths to each module or time multiplexing of the signals. Therefore, accurate time synchronization can be achieved, enabling the system to operate effectively at high switching frequencies. Since the switches on the modules are not directly controlled by the main controller, the system provides a distributed architecture where the processing of received signals can be performed locally on each module.

A time-division multiplexed projection display is pixel shifted to produce an increased perceived display resolution. A polarizing beam splitter (PBS) divides input unpolarized display light into two orthogonal linear polarizations and directs them to two PBS arms. The PBS arms act to shift the light in synchronization with the time-multiplexed display such that a single pixel of the light engine providing the display light is converted into two or four virtual pixels, effectively increasing the perceived display resolution relative to the native resolution of the light engine. The PBS combines the light from both PBS arms into a single, unpolarized output that may then be projected into a lens or a waveguide incoupler to enable the light to propagate through a waveguide for display at a user's eye.

The present disclosure discloses a method and a system for transmitting DFT-s-OFDM symbols. A data sequence for transmitting as an OFDM symbol is received as input from a data source. A reference sequence for transmitting along with the data sequence as the OFDM symbol is generated and time-multiplexed with the data sequence, to generate a multiplexed sequence. Thereafter, a Discrete Fourier Transform (DFT) operation is performed on the multiplexed sequence to generate a DFT-spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) symbol that is further processed for transmitting over a channel. The transmission of the reference sequence and the data sequence in a single OFDM symbol provides better bandwidth utilization and flexibility in modulation of the reference sequence and the data sequence.

The invention discloses a time multiplexing spectrum analysis chip based on a modulator array and a spectrum reconstruction method. The chip comprises an input end main waveguide; the micro-ring array is composed of micro-ring resonant cavities with different FSRs; the modulator array is composed of independent Mach-Zehnder intensity modulation units, and optical signals are coupled and input through a micro-ring drop; the spatial light structure beam combiner is used for converging light signals at the output end of the modulator array in a free space; the optical detector is used for receiving the converged optical signal and outputting a time sequence electric signal; the electrode array is used for applying discrete switch control signals to the modulation units in the time dimension. According to the scheme, channels with different transmission spectrums are constructed through the micro-ring array, the on-off state of the modulator array is coded, specific currents are applied to all modulators according to codes, the sum of all paths of light intensity in different coding states is collected, spectrum reconstruction is carried out on the collected light intensity sequence, and the spectrum of the light intensity sequence is obtained. And the spectral information of the incident end can be efficiently restored.

This application discloses HDR enhancement using temporal multiplexing. Systems, devices, and methods may include a performance-enhanced computing system comprising: a sensor for measuring luminance values corresponding to light focused onto the sensor at multiple pixel locations; a memory comprising a set of instructions; and a processor. The processor executes the set of instructions, causing the system to: generate a multi-segment tone mapping curve; generate a set of tone mapping values corresponding to the multi-segment tone mapping curve for storing equally spaced input values between zero and one in a lookup table; and process the luminance values using the lookup table to apply the tone mapping curve to the luminance values of the pixels.

A method for differentiating multiple Physical Downlink Shared Channel (PDSCH) transmission schemes for transmission of data for an over-the-top (OTT) service. In a non-limiting example, the PDSCH transmission schemes include a spatial multiplexing transmission scheme, a frequency multiplexing transmission scheme, a slot-based time multiplexing transmission scheme, and a mini-slot-based time multiplexing transmission scheme. In examples discussed herein, a User Equipment (UE) can be configured to differentiate the PDSCH transmission schemes based on information indicated in Downlink Control Information (DCI) for scheduling a PDSCH transmission, information signaled to the UE via a higher layer configuration, and / or capability signaling indicated from the UE to a network. By differentiating the PDSCH transmission schemes, the UE can efficiently receive a data transmission(s) from multiple Transmission / Reception Points (TRPs) to obtain user data from the OTT service.

This invention relates to the field of wireless communication and target detection technology, and discloses a spatiotemporal multiplexing adaptive beam coordination control method and system for a RIS-assisted ISAC system. The method acquires channel state, user location, target azimuth, obstruction flags, multipath parameters, RIS hardware constraints, and task priority information to construct a parameterized model; allocates communication and sensing time slots in the time domain and divides communication and sensing functional subarrays in the spatial domain; establishes a joint optimization objective, employs hierarchical robust alternating optimization to obtain the continuous-domain RIS configuration, and maps it to a discrete codebook for robustness verification; adaptively updates the RIS configuration using a bidirectional closed-loop feedback and a three-level triggering mechanism, outputting the RIS configuration matrix, spatiotemporal resource allocation scheme, and beam coordination control parameters. This invention can improve the communication-sensing coordination capability, system robustness, and burst response capability under complex obstruction, multipath disturbances, and hardware non-ideal scenarios.

The invention provides a reservoir calculation method based on rare earth doped nanocrystals. The reservoir calculation method comprises the following steps: acquiring an original digital image and converting the original digital image into a binary vector set; modulating the binary vector set into a pulse sequence set through time multiplexing coding; inputting the pulse sequence into a reservoir formed by three layers of core-shell-shell structure rare earth doped nanocrystals, and generating a corresponding luminescence response curve set through nonlinear dynamic interaction of the three layers of core-shell-shell structure rare earth doped nanocrystals; extracting features based on the curve set to form a reservoir state vector set; and finally, training and classifying the state vector set through a linear layer to obtain an image classification result. According to the reservoir calculation method based on the rare earth doped nanocrystals, through the synergistic effect of the physical characteristics of the rare earth doped nanocrystals and time multiplexing coding, a single reservoir replaces a traditional complex electronic network, coding, calculation and feature extraction are completed in an optical domain, the algorithm complexity and the training cost are remarkably reduced, and the calculation efficiency is improved. And efficient image classification is realized.

This invention relates to the field of video acquisition technology, and in particular to a video synchronization acquisition method and apparatus based on optical distant images. The proposed solution involves acquiring a calibration image of the content to be synchronized and user posture parameters; calculating the geometric mapping matrix and point spread function using the calibration image and a preset calibration sequence; and performing geometric pre-distortion and frequency domain compensation on the content to be synchronized to obtain a compensated frame; then, combining the rotation range predicted by the posture parameters, using time-multiplexed multi-view rendering to generate a sub-frame sequence, which is then output by the display end, to achieve a stable distant image viewing experience under small desktop conditions. This solution can alleviate visual fatigue caused by near-field viewing and improve the intelligence level of learning interaction.

A method for volumetric manufacturing of a three-dimensional object, comprising the steps of spatially modulating a first optical beam (300, 400, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300) with a first spatial light modulator (310, 410, 510, 610, 710, 810, 910, 1010, 1110, 1210, 1310), to generate a first spatially modulated optical beam (320, 420, 520, 620, 720, 820, 920, 1020, 1120, 1220, 1320), and introducing said first modulated beam (320, 420, 520, 620, 720, 820, 920, 1020, 1120, 1220, 1320) at a first projection direction into a photosensitive resin (350, 450, 550, 650, 750, 850, 950, 1050, 1150, 1250, 1350) that is provided in a photosensitive resin container (340, 440, 540, 640, 740, 840, 940, 1040, 1140, 1240, 1340), so as to generate a three-dimensional light intensity distribution (360, 460c, 660, 760, 860, 1060, 1260) in said photosensitive resin (350, 450, 550, 650, 750, 850, 950, 1050, 1150, 1250, 1350), wherein the first spatially modulated optical beam provides time multiplexed pattern projections. The present invention is furthermore related to a device for performing said method.

The invention belongs to the field of micro-nano machining and manufacturing, and particularly relates to a line scanning two-photon machining system based on femtosecond laser time multiplexing. The system comprises a femtosecond laser light source, a scanner, a dodging and focusing device, a dispersion mask device, a relay projection device and a displacement table which are sequentially arranged along a light path, different time delays are introduced at different positions of the linear light spots between the uniform light focusing device and the dispersion mask device or between the dispersion mask device and the relay projection device, so that light rays at different positions of the linear light spots reach the relay projection device at different times, and time multiplexing is formed; according to the method, certain delay is introduced to each point of the linear light spot, mutual interference of spectral components of each point on the linear light spot line is fundamentally reduced, meanwhile, the delay effectively reduces the influence of proximity effect, the problem of mutual interference among the points in parallel processing can be effectively reduced, and the processing precision is improved. And the parallel processing resolution is improved while the processing efficiency is ensured.

The invention is suitable for the technical field of network bandwidth, and provides a network bandwidth space-time multiplexing method and system combined with flow prediction, and the method comprises the following steps: collecting historical flow data of a television broadcasting system, including time dimension data, space dimension data and program feature data, and carrying out the cleaning and feature engineering processing of the historical flow data; constructing a traffic prediction model based on the historical traffic data; designing a dynamic bandwidth allocation strategy according to a prediction demand result, wherein the dynamic bandwidth allocation strategy comprises time multiplexing and spatial multiplexing; the time multiplexing realizes dynamic adjustment of bandwidth allocation according to prediction requirements in different time periods, and the spatial multiplexing realizes dynamic allocation of bandwidth resources according to the prediction requirements among different geographic areas; and carrying out real-time monitoring, continuously collecting actual flow data and comparing the actual flow data with a prediction result, and dynamically adjusting a bandwidth allocation strategy based on feedback information. According to the method, traffic prediction and space-time multiplexing are closely combined, the bandwidth is adjusted in advance through prediction, and the bandwidth utilization rate and the user experience are improved.

The invention relates to beam selection. According to some examples, there is provided an apparatus for a user equipment, the apparatus comprising means for obtaining, from a network access node, a low-power synchronization signal corresponding to a first beam and one or more beam tracking signals corresponding to one or more other beams, wherein the low power synchronization signal is time multiplexed within the one or more beam tracking signals; estimating a respective receive power and / or receive quality associated with the first beam and one or more other beams based on the obtained low power synchronization signal and one or more beam tracking signals; and selecting a beam from the first beam and one or more other beams based on the estimated respective received power and / or reception quality.

The present disclosure includes methods and systems for creating, using, and controlling LED headlight topologies and matrices that require fewer parts, electricity, and power, while allowing for advanced features such as bend lighting. The disclosed methods and systems can enable the use of smaller electrical systems, including control systems for LED and other headlight topologies. The disclosed methods and systems can also take advantage of pixel pairing and time multiplexing, among other methods, to manage electrical flow to minimize power needed over the circuit at given times, thus reducing the amount of material needed to create the LED headlight topology and related methods and systems for creating, using, and controlling the LED headlight topology.

The application is suitable for the technical field of network bandwidth, and provides a network bandwidth space-time multiplexing method and system combined with traffic prediction, comprising the following steps: collecting historical traffic data of a television broadcast system, including time dimension data, space dimension data and program feature data, and performing cleaning and feature engineering processing on the historical traffic data; constructing a traffic prediction model based on the historical traffic data; designing a dynamic bandwidth allocation strategy according to a prediction demand result, including time multiplexing and space multiplexing; the time multiplexing is realized by dynamically adjusting bandwidth allocation according to the prediction demand in different time periods, and the space multiplexing is realized by dynamically adjusting bandwidth resources according to the prediction demand between different geographical regions; real-time monitoring is performed, actual traffic data is continuously collected and compared with the prediction result, and the bandwidth allocation strategy is dynamically adjusted based on feedback information. The application closely combines traffic prediction with space-time multiplexing, adjusts bandwidth in advance through prediction, and improves bandwidth utilization and user experience.

The present disclosure includes methods and systems for creating, using, and controlling LED headlight topologies and matrices that require fewer parts, electricity, and power, while allowing for advanced features such as bend lighting. The disclosed methods and systems can enable the use of smaller electrical systems, including control systems for LED and other headlight topologies. The disclosed methods and systems can also take advantage of pixel pairing and time multiplexing, among other methods, to manage electrical flow to minimize power needed over the circuit at given times, thus reducing the amount of material needed to create the LED headlight topology and related methods and systems for creating, using, and controlling the LED headlight topology.

For a given region of a liquid crystal display (LCD) device and a given viewing direction, colour values of an imaginary light ray that originates from at least one virtual object along the given viewing direction and that is to be presented by the given region of the LCD device are determined. This LCD device includes a backlight unit that is configured to produce collimated light rays. A drive signal is generated and sent to control the given region of the LCD device to emit light rays having the colour values of the imaginary light ray. A corresponding portion of an active optical element arranged on an optical path of the backlight unit is controlled, to direct the light rays along the given viewing direction. The aforesaid steps are repeated for respective ones of different viewing directions, by employing temporal multiplexing.

Various embodiments of the present disclosure are directed to a photonic circuit for a vector-matrix operation. A source pixel is configured to generate a light beam. An optical fan-out structure is configured to generate a plurality of copies of the light beam. A plurality of modulator pixels are configured to respectively transmit the plurality of copies with individual transmissivities to generate a plurality of transmitted light beams. A plurality of detector pixels are configured to accumulate charge respectively in response to the plurality of transmitted light beams. A controller is configured to control the source pixel and the plurality of modulator pixels to modulate an intensity of the light beam and the individual transmissivities to perform the vector-matrix multiplication operation. The intensity is modulated to temporally encode an input row vector, and the individual transmissivities are modulated to temporally encode corresponding column vectors of a weight matrix.

The application discloses a quality-of-service oriented GPU space-time adaptive resource scheduling method and system, belongs to the field of heterogeneous resource scheduling and management under deep learning inference, and comprises the following steps: determining a minimum SM subset satisfying a quality-of-service constraint and corresponding SM mask configuration in an offline stage; collecting multi-task co-location operation data offline, and constructing an interference-aware delay prediction model by using the multi-task co-location operation data; in an online scheduling stage, when a new task arrives, it is judged whether the GPU is in an idle state according to a current GPU load state; the constructed interference-aware delay prediction model is used for prediction, and it is judged whether the predicted inference delay and the predicted delay both satisfy preset quality-of-service constraints; a time multiplexing strategy is adopted to schedule and execute tasks by intercepting a kernel-level command buffer, and it is ensured that only one task occupies all resources of the GPU at the same time. The application can improve system throughput and guarantee the quality of service of delay-sensitive tasks.

The invention discloses a long-distance multispectral day and night monitoring method and system for adaptive communication. The method comprises the following steps: acquiring environment illumination brightness, time information and a brightness rapid change event, judging a monitoring working state based on the information, controlling a thermal imaging unit to be started or closed in a dawn, daytime, shady fog, dusk or night mode, driving a time multiplexing coding optical element (TMCA) to perform time-sharing gating between white light and near-infrared light wavebands according to a spectrum time slot, and performing time-sharing gating between the white light and near-infrared light wavebands according to a spectrum time slot. And the spectrum time ratio is dynamically adjusted based on the ROI imaging quality. And the system evaluates the quality of a communication link, adaptively selects FSO or RF link transmission, preferentially uploads ROI data when the bandwidth is limited, and caches and supplementarily transmits other data. According to the method, multispectral imaging is realized through the TMCA, and the imaging quality of a key area is improved by combining the high-speed illumination detection of the event camera and the ROI sub-exposure mechanism.

The application relates to the technical field of image analysis, and particularly relates to an image analysis device based on deep learning. The device comprises a model warehouse, a running environment monitor, a model decision engine, a heterogeneous computing engine and a unified inference interface; the model warehouse stores a plurality of deep learning models for the same image analysis task; the running environment monitor is arranged on a target device and is used for collecting system state indexes of the target device in real time; the model decision engine is coupled with the model warehouse and the running environment monitor respectively and is used for dynamically generating control instructions based on a model predictive control algorithm during task execution; the heterogeneous computing engine is used for receiving the control instructions, loading corresponding models from the model warehouse according to model version identifiers in the control instructions, and executing an image analysis task according to the space allocation intensity coefficient and the time multiplexing intensity coefficient.