259 results about "Signal coding" patented technology

The invention discloses a crown block positioning control method and related equipment, and relates to the technical field of industrial automation control, and the method comprises the steps: obtaining multi-source sensing data of a target crown block; carrying out fusion processing on the ultra-wideband positioning signal, the encoder displacement increment and the inertial measurement unit data based on a robust Kalman filtering algorithm to obtain a first positioning result; performing point cloud registration processing on the laser radar scanning data to obtain a second positioning result; determining a pose offset compensation amount through a preset kinetic model; and controlling the target crown block according to the first positioning result, the second positioning result and the pose offset compensation amount. Through the multi-sensor fusion and dynamic compensation technology, high-precision and anti-interference crown block positioning and control suitable for complex working conditions can be achieved.

The invention discloses an LLM-based scheduling management system, which belongs to the field of industrial and commercial enterprise scheduling management systems, adopts a data acquisition technology driven by bio-electricity signals, enriches data acquisition forms, can acquire various bio-electricity signals such as electroencephalogram, electrocardio, myoelectricity and the like, and improves the scheduling efficiency. And through a multi-channel parallel data transmission architecture and an advanced signal coding technology, the accuracy and stability of data transmission are ensured, key data in a human physiological state or a special environment are reflected, and some application scenes with relatively high requirements on data comprehensiveness and accuracy are met. The LLM-based scheduling module generates an optimal scheduling scheme by means of the powerful analysis and reasoning capability of a large language model in combination with a genetic algorithm and a simulated annealing algorithm, quantitative evaluation is carried out through a multi-objective optimization algorithm, various complex constraint conditions can be fully considered, and efficient scheduling is realized.

The embodiment of the invention provides a method for realizing long-distance signal transmission under the condition of a porous medium in a goaf. The method comprises the following steps: selecting a proper signal frequency range based on the physical characteristics of the porous medium in the goaf; designing a corresponding signal modulation mode according to the selected signal frequency range; the stability of a signal propagation path is enhanced through a relay node deployed in the goaf; modulation parameters are dynamically adjusted based on the signal quality fed back by the relay node to optimize the transmission effect. Through the scheme of the embodiment of the invention, the problem of how to optimize and select the signal frequency so as to solve the problem of too fast signal attenuation in the porous medium can be solved, and meanwhile, the problem of how to regulate and control the dielectric property of the transmission path so as to solve the delay problem caused by signal refraction and reflection can be solved; and the problem of bit error rate increase in long-distance transmission can be solved by adjusting the signal coding mode.

The invention provides a single-pixel-based visible light infrared fusion compression spectrum imaging system and method, and the method comprises the following steps: 1, carrying out the signal coding of a to-be-detected target signal, and obtaining a coded to-be-detected target infrared signal and a coded to-be-detected target visible light signal; step 2, inputting a to-be-measured target infrared signal into an infrared imaging light path, collecting a medium-wave infrared spectrum intensity value, and inputting a to-be-measured target visible light signal into a visible light imaging light path to collect a visible light spectrum intensity value; step 3, carrying out compressed sampling and reconstruction operation on the visible light spectrum intensity value and the medium wave infrared spectrum intensity value to obtain an infrared hyperspectral image and a visible light hyperspectral image of the target to be detected; 4, performing image fusion according to the infrared hyperspectral image and the visible light hyperspectral image to obtain a fused image with rich details; the fusion imaging of the method has the characteristic of keeping the feature information of the target scene so as to realize high-quality imaging.

The invention provides a signal processing method, which is applied to the technical field of brain-computer interfaces (BCI), and comprises the following steps: acquiring a first signal which is a signal acquired from brain tissue, acquiring a downstream feedback signal, and then processing the first signal according to the feedback signal. According to the method, the feedback signal is combined to process the first signal collected from the brain tissue instead of directly inputting the first signal into the decoding device for decoding, so that the long-term stability of signal coding and decoding is guaranteed, the situation that the long-term stability of signal coding and decoding is reduced or even fails due to the non-stability of the signal is avoided, and the service requirement can be met.

The invention relates to the technical field of signal transmission, in particular to a wireless while-drilling pulse signal transmission system under a high-temperature condition. The system comprises a signal generation part, a signal transmission part and a signal receiving part, the signal generation part is used for sensing changes of temperature, pressure or vibration of an underground environment through a piezoelectric crystal, generating an initial electric signal, forming a mechanical signal and converting the mechanical signal into an initial pulse signal in an electric signal form again; the signal transmission part is used for performing mud pressure modulation on the initial pulse signal to obtain a phase change function; performing nonlinear correction to obtain a correction result; performing signal coding modulation based on the correction result; the modulation signal is sent to a signal receiving part at a far end; and the signal receiving part is used for receiving the modulation signal and demodulating the modulation signal to obtain a demodulated output signal. A complete, efficient and reliable solution is provided for wireless while-drilling pulse signal transmission under the high-temperature condition.

The present application provides a signal processing method, which is applied to the technical field of brain-computer interfaces (BCI), and comprises: acquiring a first signal, the first signal being a signal collected from brain tissue; acquiring a downstream feedback signal; and then, according to the feedback signal, processing the first signal. On the basis of the feedback signal, the method processes the first signal collected from the brain tissue, rather than directly inputting into a decoding apparatus the first signal to be decoded, thereby ensuring the long-term stability of signal coding and decoding so as to avoid the decrease or even failure of the long-term stability of signal coding and decoding caused by the non-stationarity of the signal, and to satisfy service requirements.

The invention discloses a global-oriented multi-language multi-time-zone power station management method and system, and relates to the technical field of electric power digital management, and the method comprises the steps: collecting power station data, carrying out the standardized identification, and constructing a power station multistage coding identification main key; a multi-language mapping system is constructed by taking a multi-level coding identification main key of a power station as a drive, and time zone offset logic is constructed by using standardized identification; and performing hierarchical authority control based on the power station multi-level coding identification primary key prefix and generating a localized alarm prompt. According to the method, standardized identification of power station data is realized by constructing a unified power station multi-level coding main key; based on primary key driving multi-language mapping and time zone offset processing, accurate presentation and time consistency of data in a multi-language environment are guaranteed; authority control is achieved through primary key prefix division, multi-language alarm prompts are triggered in combination with signal coding, and a power station event management mechanism which is clear in alarm semantics, timely in response and controllable in boundary is achieved.

The invention discloses a material grain size distribution deep learning prediction method based on multi-mode space signal coding, which comprises the following steps: firstly, collecting ultrasonic characteristic signals based on a pulse echo method, collecting space distribution signals as a single-point grain characterization characteristic set by using elliptical distribution by taking a collection point as a center, preprocessing the collection signals to extract characteristics, and carrying out multi-mode space signal coding; feature compression extraction is carried out through a detection model by using a compressed sensing network, material grain size distribution and detection point material thickness are predicted by using a full-connection network, and finally a mean value and a variance of grain size distribution are obtained through comprehensive calculation of detection point prediction results in an elliptical region by using a space fusion method. According to the method, high-precision prediction and high-efficiency calculation of grain size distribution of the metal material are realized, an intermediate network of model training is expected to be used for transfer learning of characterization tasks of other materials, and many problems of a traditional method and an existing data driving method in the aspect of grain size measurement are solved.

An image decoding method is provided, which comprises: generating a merge candidate list of a current block; specifying any one of a plurality of merge candidates included in the merge candidate list; on the basis of a first affine seed vector and a second affine seed vector of the specified merge candidate, inducing a first affine seed vector and a second affine seed vector of the current block; using the first affine seed vector and the second affine seed vector of the current block, inducing an affine vector regarding a sub-block in the current block; and on the basis of the affine vector, performing motion compensation prediction regarding the sub-block.

A multi-modal signal recognition and dialogue method based on a large language model comprises the steps that a signal coding module based on time sequence modeling is constructed, preprocessing and feature extraction are conducted on input I / Q signal data, and semantic alignment pre-training of signal features and modulation type text description is achieved through a contrast learning mechanism; designing a multi-modal fusion architecture, mapping signal features to a hidden space of a large language model by adopting a signal projector, and realizing deep fusion of the signal features and text features through special markers; constructing a dialogue generation module based on a pre-trained large language model, receiving the fused multi-modal input, and generating a natural language answer about signal analysis; performing feature alignment by training a double-layer MLP projector to realize end-to-end multi-modal signal understanding and dialogue ability; an intelligent question-answering system in a reasoning stage is constructed, natural language interaction between a user and the system is realized through a predefined professional prompt word template and a signal feature fusion mechanism, and multi-dimensional signal analysis query requirements are supported. According to the invention, the organic combination of signal understanding and natural language generation is realized, and the accuracy of signal identification and the user interaction experience are improved.

A method for decoding an image according to the present invention may comprise the steps of: deriving a residual coefficient of a current block; dequantizing the residual coefficient; deriving a common residual signal by performing inverse transform of the dequantized residual coefficient; and deriving a first residual signal of a first chroma component and a second residual signal of a second chroma component on the basis of the common residual signal.

The invention discloses an audio and video real-time stream transmission method for a recording and broadcasting system with adaptive code rate adjustment, which adopts an adaptive code rate adjustment strategy, dynamically adjusts the code rate according to the network condition, the user equipment performance and the audio and video signal coding efficiency monitored in real time, has higher flexibility and adaptability, and can be used for realizing the real-time transmission of the audio and video. According to the invention, optimization of audio and video real-time stream transmission is realized, and the problem that audio and video transmission is lagged and delayed under the condition of poor network quality due to the fact that an existing recording and broadcasting system mostly adopts a transmission mode with a fixed code rate and the code rate cannot be adjusted in real time according to network conditions and user requirements is effectively solved.

There is disclosed inter alia a method for decoding an encoded spatial audio signal in a pass-through coding mode, wherein the encoded spatial audio signal comprises an encoded audio metadata signal, encoded audio channel signals and encoded information relating to a plurality of audio objects, wherein the method performs the decoding by decoding the encoded spatial audio signal to produce audio metadata in a predefined format and audio channel signals; and decoding information relating to the plurality of audio objects to produce a plurality of audio objects.

An image decoding method according to the present invention includes: a step for determining a reference sample line of a current block; a step for determining whether candidate intra-predition modes identical to the intra-prediction mode of the current block exist; a step for deriving the intra-prediction mode of the current block on the basis of the determination; and a step for performing intra-prediction on the current block on the basis of the reference sample line and the intra-prediction mode. Here, at least one of the candidate intra prediction modes may be derived by adding or subtracting an offset to or from the maximum value among the intra-prediction mode of a neighboring block that is above the current block and the intra-prediction mode of a neighboring block that is to the left of the current block.

The invention relates to the technical field of railway signal coding, in particular to in-station multi-information coding information equipment, which adopts a redundant dual-computer hot standby architecture, is switched to a standby channel to continue working through a dual backup and cross check mechanism when any single component fails, and comprises a sending board, a code receiving board, a code receiving board and a code sending board, receiving communication coding input or dial-up input of an upper computer, and controlling the modulation chip to generate a frequency shift excitation signal based on carrier frequency control and low frequency control input; the power amplifier board is used for filtering and amplifying the frequency shift excitation signal generated by the transmitting board based on the received power control input and then outputting a coded signal; the detection board is used for detecting a code sending signal of the track circuit; and the power panel has overvoltage and overcurrent protection functions and is used for supplying power to each component. Compared with the prior art, dynamic adjustment can be achieved according to the actual environment requirement, a good signal coverage effect is achieved, and wide equipment compatibility and flexible field adaptability are achieved.

A system includes one or more ultra-wideband (UWB) transmit apparatuses configured to communicate an UWB signal that encodes radio packets that includes at least a preamble and a start frame delimiter (SFD) enabling a receiver to recover a reception timestamp and a channel impulse response (CIR) of the transmission, wherein the one or more UWB transmit apparatuses are located in a fixed position and configured to divide a space into a plurality of subspaces configured to be assigned an attribute associated with the subspaces, including one or more UWB receivers configured to extract CIR information from the one or more radio packets received from a UWB transceiver, and trigger an event in response to a determination of the receiver being either located in one of a plurality of subspaces, or leaving or entering the one of the plurality of subspaces, wherein the determination is made utilizing at least the CIR information.

The invention discloses a gesture recognition control method and system for a range hood and the range hood. According to the gesture recognition control method for the range hood, two sets of infrared geminate transistor sensors are controlled to emit infrared emission signals with preset coding values in a synchronous period; acquiring the signal intensity, the signal coding matching degree and the receiving time interval of two groups of corresponding infrared receiving signals after the two groups of infrared sending signals are reflected, judging whether an effective gesture judgment condition is met or not based on the signal intensity, the signal coding matching degree and the receiving time interval, and when the effective gesture judgment condition is met, executing the step 2; if yes, the gestures currently detected by the two sets of infrared geminate transistor sensors are determined to be effective gestures, and the range hood is controlled to execute control actions corresponding to the control instructions based on the control instructions corresponding to the effective gestures; coding verification, intensity verification and sequential logic-based dual-channel correlation judgment are carried out on the two groups of infrared receiving signals, so that efficient, reliable and high-interference-resistance non-contact waving action recognition can be ensured.

An embodiment is related to a decoder / encoder for decoding / encoding a multi-channel digital signal from / into a data stream configured to decode / encode coded channels representing the multi-channel digital signal from / into the data stream in temporal blocks with sequentially decoding / encoding from / into the data stream a predetermined temporal block of each of the coded channels before decoding a subsequent temporal block of any of the coded channels by determining one or more prediction parameters and predicting a current temporal block of a predetermined coded channel from a reference block portion of one or more reference channels using the one or more prediction parameters. The one or more prediction parameters are determined based on a preceding temporal segment of the predetermined coded channel and a preceding temporal reference segment of the one or more reference channels.

An embodiment is related to a decoder / encoder for decoding / encoding a multi-channel digital signal from / into a data stream configured to decode / encode coded channels representing the multi-channel digital signal from / into the data stream in temporal blocks with sequentially decoding / encoding from / into the data stream a predetermined temporal block of each of the coded channels before decoding a subsequent temporal block of any of the coded channels by determining one or more prediction parameters and predicting a current temporal block of a predetermined coded channel from a reference block portion of one or more reference channels using the one or more prediction parameters. The one or more prediction parameters are determined based on a preceding temporal segment of the predetermined coded channel and a preceding temporal reference segment of the one or more reference channels.

A sensing system (50) that can image a phase change medium comprises: a transmission device (10) that generates a radar signal, generates a code, generates a carrier signal, generates a high-frequency signal by using the carrier signal and a multiplication signal obtained by multiplying the radar signal by the code, and transmits the high-frequency signal from a plurality of transmission antenna elements (18); a reflection plate (22); and a reception device (30) that receives, by a plurality of reception antenna elements (32), a high-frequency signal that is a reflected wave reflected by the reflection plate (22) or a measurement target (21) that is a phase change medium, or a scattered wave scattered by the same, converts the high-frequency signal into a baseband or intermediate-frequency reception signal, generates transmission path information from the reception signal by using the radar signal, the carrier signal, and the code, identifies the position of the measurement target (21) by using the transmission path information, corrects the focal point of the measurement target (21), determines the phase change of the measurement target (21), and generates an image of the measurement target (21).

The application provides a semiconductor laser reservoir pool computing device based on silicon-based micro-resonant cavity optical feedback, and belongs to the technical field of photonic neuromorphic computing. Laser output by a driving laser is modulated by a phase modulator, and then is injected into a response semiconductor laser through a feedback cavity incoupler and a circulator; the output end of the response semiconductor laser is connected to an optical circulator in sequence through a second variable optical attenuator, a polarization controller, a silicon-based micro-resonator and a first variable optical attenuator, so as to form a silicon-based micro-resonator optical feedback loop; the output end of the feedback cavity incoupler is connected to a broadband photodetector, which is used to collect reservoir pool output signals; the phase modulator is loaded with a modulation signal containing an input signal and a random mask, so as to realize input layer signal coding. The application realizes the improvement of overall computing performance.

The invention discloses a free space optical communication system based on a structured optical frequency comb, and belongs to the field of optical communication. Comprising an optical frequency comb generation system, a signal coding system, a spatial light modulation and demodulation system and a signal receiving system. The optical frequency comb generation system is used for modulating input continuous laser into an adjustable optical frequency comb with high repetition frequency, short pulse width and high power; the signal coding system is used for separating the light with different wavelengths in the optical frequency comb, independently coding the light with each wavelength, and finally combining the light with different wavelengths again; the spatial light modulation and demodulation system is used for coupling the Gaussian beam in the optical fiber into a free space and converting the Gaussian beam into structured light, demodulating the structured light after the structured light is transmitted to a receiving end and re-coupling the structured light back to the optical fiber; the signal receiving system is used for receiving and analyzing the optical signals. According to the invention, the optical frequency comb and the structured light are combined, and the problem that optical signals are easily influenced by atmospheric turbulence in free space optical communication can be effectively solved on the premise of ensuring large communication capacity.

A video decoding method according to the present invention comprises the steps of: generating a merge candidate list of a current block; determining a merge candidate of the current block from merge candidates included in the merge candidate list; deriving an offset vector of the current block; and deriving a motion vector of the current block by adding the offset vector to the motion vector of the merge candidate.

An image signal encoding / decoding method and an apparatus therefor according to the present disclosure. The image decoding method comprises the steps of: parsing parallel block column number information indicating a value obtained by subtracting 1 from the number of parallel block columns included in an i-th slice; parsing parallel block line number information indicating a value obtained by subtracting 1 from the number of parallel block lines included in the i-th slice; and if both the parallel block column number information and the parallel block row number information are zero, further parsing number information related to the number of slices for which height information in the parallel block including the i-th slice is explicitly signaled.

A video coding mechanism for view-dependent video coding is disclosed. The mechanism includes receiving a spherical video signal spliced from a multi-directional video stream. The spherical video signal is mapped into a plurality of sub-picture video signals, each of which includes a sequence of sub-pictures. The plurality of sub-picture video signals are coded into a plurality of sub-picture bitstreams such that, when decoded in a decoder, each pixel in each sub-picture has a value equal to a corresponding pixel in a whole picture composed of the sub-pictures after decoding. The plurality of sub-picture bitstreams form a plurality of sub-picture tracks, and it is indicated that the sub-picture tracks conform to a specific video profile. The sub-picture bitstreams are sent to a decoder to support decoding and displaying a virtual reality video view.

This invention provides a method for improving the coding quality of multi-channel signals and an encoder. [Solution] The method includes the steps of: acquiring a multichannel signal of the current frame; determining an initial interchannel time difference (ITD) value for the current frame; and controlling the number of target frames that are allowed to appear consecutively based on characteristic information of the multichannel signal. The characteristic information includes at least one of the signal-to-noise ratio parameter of the multichannel signal and the peak features of the cross-correlation coefficient of the multichannel signal, and the ITD value of the frame preceding the target frame is reused as the ITD value of the target frame. The method also includes the steps of: determining the ITD value of the current frame based on the initial ITD value of the current frame and the number of target frames that are allowed to appear consecutively; and encoding the multichannel signal based on the ITD value of the current frame.

An audio encoding and decoding method and a related apparatus are provided. The audio encoding method may include: determining a coding mode of a current frame; when determining that the coding mode of the current frame is an anticorrelated signal coding mode, performing time-domain downmix processing on left and right channel signals in the current frame by using a time-domain downmix processing manner corresponding to the anticorrelated signal coding mode, to obtain a primary channel signal and a secondary channel signal, where the time-domain downmix processing manner corresponding to the anticorrelated signal coding mode is a time-domain downmix processing manner corresponding to an anticorrelated signal channel combination scheme, and the anticorrelated signal channel combination scheme is a channel combination scheme corresponding to a near out of phase signal; and encoding the obtained primary channel signal and secondary channel signal in the current frame.

The invention discloses a side slope tiny deformation monitoring system and method based on wireless optical communication, and belongs to the technical field of side slope deformation detection.The side slope tiny deformation monitoring system comprises a power module, a shielding module, an optical signal coding module, a laser transmitting module, a laser receiving module, an optical signal decoding module and a wireless communication module; the micro deformation degree of the side slope is judged according to the optical signal receiving deviation degree of the laser transmitting module and the laser receiving module, micro deformation monitoring of the side slope is achieved, the monitoring result of the micro deformation of the side slope is uploaded to an external upper computer through the wireless communication module for data storage, and the shielding module is used for shielding the micro deformation of the side slope. The laser transmitting module and the laser receiving module are covered, and interference of the external environment on optical communication is reduced. According to the invention, based on wireless optical communication, the micro deformation monitoring result of the slope can be timely and directly sent to the upper computer for statistical storage, the data volume transmission pressure is small, the data processing is convenient, different deformation grades can be divided, and a manual inspection strategy is convenient to formulate.

The present application provides methods for detecting a nucleic acid molecule involving the use of a signal code sequence which corresponds to said nucleic acid molecule and a plurality of labelled detection probes which yield signals which make up the signal code sequence. In particular, the invention provides a sequential barcoding and decoding scheme which utilises a sequencing-by-hybridisation (SBH) strategy to sequence and decode a nucleotide barcode sequence, and to differentiate the nucleotide barcode sequence from other nucleotide barcode sequences. In an extension of the method, the application also provides a new coding scheme for providing a target nucleic acid with a detectable “colour” (or similar signal)-based code.