46 results about "Independent clock" patented technology

The invention relates to the technical field of voice recognition, in particular to an implementation method and device of a multi-channel voiceprint recognition system, and the implementation method comprises the steps of multi-channel data acquisition and synchronization, signal preprocessing and enhancement, feature extraction and fusion, model training, real-time deployment and adaptive optimization. Compared with the problems that a traditional multichannel voiceprint recognition system depends on a fixed beam forming algorithm and an independent clock synchronization module, the synchronization error is large, manual parameter adjustment is needed for noise suppression, and generalization is poor, hardware-level clock synchronization is achieved through a PTP protocol, and the accuracy of noise suppression is improved. The method combines an end-to-end neural network to automatically learn noise distribution and a sound source space position, dynamically generates a beam forming weight, can improve the voice quality in a complex noise scene without manual intervention, remarkably reduces the interference of a synchronization error on sound source positioning, and enables the precision and stability of far-field voice enhancement to reach a new level.

A scan island for automated data retrieval from an integrated circuit (IC) includes a data extraction module configured to extract data from multiple scan chains and random-access memory (RAM) modules in response to a trigger event, storing the data in an external non-volatile storage medium. The scan island further comprises a clock and reset module, which includes a free-running independent clock to enable continuous operation of the scan island upon occurrence of the trigger event, and a local reset module that re-initializes the scan island in a known state following the trigger event without external intervention. The scan island operates as an isolated partition within the IC, ensuring secure and autonomous data retrieval and recovery processes.

The invention discloses a network time synchronization method, device and equipment and a computer program product, the network time synchronization method is executed by a network time synchronization system, the network time synchronization system comprises a plurality of network nodes, and each network node is equipped with an independent clock source. The network time synchronization method comprises the following steps: receiving a time signal generated by a clock source on each network node; screening the received time signals generated by each clock source to obtain screened time signals; based on the screened time signals, determining an optimal time reference by using a preset multi-clock combination synchronization algorithm; and correcting a local clock of the network node according to the optimal time reference. Through multi-clock combination and a collaborative synchronization mechanism, high-precision time synchronization can be realized without depending on expensive high-precision hardware, the deployment cost is remarkably reduced, the high performance of the system is ensured, and the system adapts to a complex network environment.

The invention discloses a resource management method, system, device and equipment for an NVMe controller system and a medium, and relates to the technical field of NVMe controllers, and the method comprises the steps: determining a single-port mode or a multi-port mode according to the port connection state of the NVMe controller system; based on different working modes, resources of the NVMe controller modules are dynamically distributed to target ports, the resources are distributed in a centralized mode and a global synchronous clock is adopted in a single-port mode, and the resources are distributed according to needs and an independent clock is provided for each port in a multi-port mode. According to the method, through dynamic resource allocation and clock management, the problems that in the prior art, resources cannot be dynamically expanded in a single-port mode and resource allocation is rigid in a multi-port mode are solved, and maximization of resource utilization efficiency, minimization of data transmission delay and improvement of system expansion flexibility are achieved.

The invention provides a software code security protection method and system based on a localization platform, and the method comprises the steps: collecting a sensing data flow interacting with external mechanical equipment in real time, carrying out the millisecond-level alignment of an equipment state parameter and an execution node of a software code instruction through an independent clock synchronization module, and carrying out the millisecond-level alignment of the equipment state parameter and the execution node of the software code instruction; generating an operation event sequence containing an instruction, sensing data and a timestamp; in a memory isolation environment, a reinforcement learning mechanism is adopted to analyze a sequence dynamic mode, and a real-time security protection rule reflecting the relevance between an instruction execution path and a hardware behavior is constructed; and a closed-loop security protection mechanism is formed through dynamic binding and updating rules of the kernel layer environment variables. According to the invention, the real-time security protection capability of interaction between software codes and mechanical equipment under a localized platform is improved.

The embodiment of the invention discloses an image decoding method, an image coding method, electronic equipment and a readable storage medium. The decoding method comprises the following steps: during image decoding, performing first decoding sub-stage processing on a to-be-decoded image code stream to obtain pixel residual information; wherein the first decoding sub-stage comprises the steps of code stream acquisition and entropy decoding of an image to be decoded; caching the pixel residual error information to a shared macro block information buffer; when an image is decoded, acquiring residual information of pixels to be processed in the macro block information buffer by adopting an asynchronous independent clock; performing second decoding sub-stage processing on the to-be-processed pixel residual information to obtain image decoding information; wherein the second decoding sub-stage comprises inverse quantization, inverse discrete cosine transform and pixel code stream write-back. By decoupling the decoding process, asynchronous parallel processing of the decoding process can be realized, the image decoding efficiency is improved, and the memory utilization rate of equipment is improved.

A kind of board card, cabinet, clock distribution circuit and system applied to quantum computing belong to quantum computing technical field;High-precision clock source is used to synchronize output high-speed clock signal and low-speed clock signal, ensure the synchronization of low-speed reference clock and high-speed sampling clock of multiple cabinets, multiple board cards;Independent clock distribution board card is used, high-speed clock electrical signal is converted into high-speed clock optical signal by microwave modulation light source, after optical power amplification, optical beam splitter, it is distributed to the clock distribution board card of each cabinet by optical fiber, low-speed clock electrical signal is connected to the clock distribution board card of each cabinet by radio frequency cable;High-speed clock optical signal, low-speed clock electrical signal are input to clock distribution board card, then by clock distribution board card distribution to each control board card, reduce the number of PD detector, Buffer, PLL and amplification filtering module on clock signal transmission path, reduce cabinet space use pressure and cost.

A multi-channel synchronous acquisition and transmission system based on the JESD204B protocol includes a multi-channel AD synchronous acquisition module, a signal source module, a power module and an upper computer module, wherein the signal source module sends a reference clock and multiple analog signals to the multi-channel AD synchronous acquisition module; the multi-channel AD synchronous acquisition module includes an FPGA, a multi-channel ADC, an independent clock source and multiple devices; the independent clock source receives the reference clock and transmits a sysref signal; a time window is configured in the multi-channel ADC; the FPGA generates a sync signal and synthesizes an LMFC, and an edge of the sysref signal is taken as an edge of the LMFC; in the multi-channel ADC, a corresponding ILAS is set for each digital signal; and the FPGA receives all the ILASs and digital signals, and multiple digital signals are processed synchronously.

The application relates to the technical field of integrated circuits and provides a built-in self-test circuit and method for a chip. The circuit comprises a control bidirectional selector for establishing a control path relationship among a plurality of objects to be tested; a data bidirectional selector for establishing a data path relationship; a management component for performing independent clock gating operations on input clock trees of the plurality of objects to be tested and performing independent system reset operations on input reset signals; and a test component for coordinating the components to set the control path relationship and the data path relationship among one or more objects to be tested according to a serial relationship, a parallel relationship or a serial-parallel mixed application relationship and to perform testing. Thus, various communication protocols and interface standards can be adapted, and the requirements of chip design development and chip testing for shortening chip testing time and fast response to changes can be met.

The present application provides a software code security protection method and system based on a domestic platform, wherein the method includes: through real-time acquisition of sensor data streams interacting with external mechanical equipment, using an independent clock synchronization module to align device status parameters with the execution nodes of software code instructions at the millisecond level, generating an operation event sequence containing instructions, sensor data and timestamps; in a memory isolation environment, using a reinforcement learning mechanism to analyze sequence dynamic patterns, and constructing real-time security protection rules that reflect the correlation between instruction execution paths and hardware behaviors; through dynamic binding and updating rules of kernel layer environment variables, forming a closed-loop security protection mechanism. The present application improves the real-time security protection capabilities of software code interacting with mechanical equipment on a domestic platform.

A test device is configured to test an on-chip clock controller having a debug function. The test device includes a scan chain and a test circuit. The scan chain includes N flip-flop circuit(s), each of which stores a first input signal as a storage signal, then stores a second input signal as the storage signal or keeps the current storage signal according to an input clock, and then output the storage signal. Since the first and second input signals are different, the outputted storage signal indicates whether the flip-flop circuit stores the second input signal or keeps the current storage signal according to the input clock under predetermined test setting, and indicates whether circuits under test (CUTs) for transmitting the input clock operate normally. The test circuit outputs an observation clock of the on-chip clock controller or an independent clock as the input clock according to the predetermined test setting.

Disclosed herein are system, method, and computer program product embodiments for adapting to malware activity on a compromised computer system by detecting timing anomalies between timing signals. An embodiment operates by analyzing first timing data accessed from a validated source and second timing data accessed from an unvalidated receiver source in order to compute a threat detection value, which is utilized to determine if there is a discrepancy or anomaly in the timing or frequency of either the validated and unvalidated sources.

This application discloses a bidirectional communication system and method for board daisy chain based on a single-wire protocol, relating to the field of computer technology. This application constructs a single-bit serial protocol daisy chain system without an independent clock line, employing dual single-wire directed links or a single half-duplex shared link to achieve bidirectional transmission between boards. This significantly reduces the hardware connection harness and input / output resource usage, lowers connector and line costs, and is suitable for scenarios involving large-scale, low-cost board cascading. After power-on, master-slave identification is automatically completed based on the upstream valid frame reception status, avoiding conflicts between multiple master nodes without the need for preset DIP switches, configuration files, or external addressing commands. The motherboard uses a preset default address, and the slave boards use an allocation method where the upstream address is incremented hop by hop, ensuring a strict correspondence between physical cascading positions and logical addresses. This achieves automatic convergence with zero manual address configuration, improving system deployment and maintenance efficiency.

The embodiment of the application provides a kind of multi-element fusion quantum time synchronization clock difference regulation method, system, equipment, the method comprises: obtaining first arrival time and second arrival time;Determine the frequency offset between first clock and second clock based on first arrival time and second arrival time, and use the frequency offset to compensate the frequency of second end;Control second end to enter locking state, initialize proportional-integral-derivative (PID) controller based on the residual error of the above frequency offset, and output phase adjustment instruction by PID controller, and the phase adjustment instruction is used to correct the bottom layer hardware parameter of second end.The above scheme can carry out high-precision synchronization of independent clock in different places at hardware level without relying on external frequency distribution.

Systems or methods described herein may relate to latch-independent clock gating techniques to enable or disable an internal clock of an integrated circuit device. A programmable logic device includes a clock gating circuit that receives a clock signal and is latch independent. The clock gating circuit includes gating signal circuitry that generates a gating signal based on the clock signal and an enable signal. The clock gating circuit also includes a logic gate that generates a control signal based on the gating signal. The clock gating circuit also includes gated clock generation circuitry that generates a gated clock signal based on the clock signal and the control signal.

The application discloses a ship, a ship multi-sensor positioning information synchronization method, a storage medium and a program product, structured clock signals are uniformly sent to each sensor through a reference clock device, the problem of different time references of multiple sensors caused by independent clock sources is solved from the hardware level, it is ensured that all measurement data have consistent and accurate traceable time labels, and the probability of misusing historical data due to time misalignment is reduced. In view of the inherent difference that the data update frequencies of the sensors are different, the high-frequency IMU and DVL data are intelligently matched to the low-frequency GNSS data time, fusion data with time synchronization and accurate covariance estimation are generated, and therefore the probability of interpolation error and information loss caused by inconsistent frequencies is reduced.

The invention discloses a method for improving multi-chip synchronization performance of an ADC (Analog to Digital Converter) based on an independent clock FIFO (First In First Out), aiming at the problem of difficulty in timing sequence alignment during synchronous acquisition of a multi-chip source synchronization interface ADC and an FPGA (Field Programmable Gate Array), the multi-chip synchronization performance of the ADC is improved by optimizing clock distribution and equal-length wiring design, optimizing connection logic of source synchronization interface signals in the FPGA and combining an automatic training mechanism of an ISERDES module in the FPGA. Automatic alignment of data bits is realized; and further synchronizing the data of each ADC to a unified clock domain by using a plurality of independent clock FIFOs (First In First Out). According to the invention, automatic and reliable synchronous sampling after the plurality of ADCs are powered on is realized, and the method has the advantages of high synchronization precision, strong anti-interference performance, support of multi-chip expansion, model self-adaption and the like.

The invention relates to the technical field of integrated circuits and provides a built-in self-test circuit and method for a chip. The circuit comprises a control bidirectional selector which is used for constructing a control path relation among a plurality of objects to be tested; the data bidirectional selector is used for constructing a data path relationship; the management component is used for executing independent clock gating operation on respective input clock trees of the plurality of to-be-tested objects and executing independent system reset operation on respective input reset signals of the plurality of to-be-tested objects; and the test component is used for coordinating the components so as to set a control path relationship and a data path relationship among one or more objects to be tested according to a serial relationship, a parallel relationship or a serial-parallel mixed application relationship and test. Therefore, the method is beneficial to adapting to various communication protocols and interface standards, and meets the requirements of chip design and development and chip testing for shortening the chip testing time and quickly responding to changes.

The invention provides a clock tree synthesis method related to a frequency dividing circuit. The clock tree synthesis method comprises the following steps: step 1, selectively adding / deleting buffers on a clock line; 2, dividing an independent clock region behind an output pin of a frequency dividing circuit trigger; 3, in the newly divided clock area, a clock is created again, and an independent clock network is created; step 4, adjusting clock delay by adopting an insertiondelay command, and guiding a tool to complete clock tree balance; and step 5, completing automatic wiring of the clock circuit. On the basis of the steps, the problems that time sequence violation of a frequency dividing circuit (DIV) cannot be repaired under an original clock tree synthesis method, and power consumption is increased are solved.

The invention discloses a storage chip power consumption optimization method and a storage medium, and the method comprises the steps: carrying out the independent unit division of a storage chip, obtaining a plurality of hardware modules, and enabling each hardware module to be provided with an independent clock control unit and a power supply unit; performing power consumption adjustment on the hardware module according to the idle time of each hardware module in different application scenes; wherein for any one application scene, the idle time of each hardware module is acquired to determine the level of the low-power-consumption mode to be entered by the hardware module; the low power consumption modes at least comprise a first-stage low power consumption mode, a second-stage low power consumption mode, a third-stage low power consumption mode and And according to the level of the low-power-consumption mode to be entered by the hardware module, the power consumption of the hardware module is adjusted through the clock control unit and the power supply unit. Different low-power-consumption modes are accurately matched for different application scenes, so that the power consumption is reduced to the greatest extent; and through precise control of different hardware modules, the overall performance of the storage device is not affected while low power consumption is ensured.

This invention relates to the field of firmware security detection technology, and discloses a method and system for assessing security risks of camera firmware based on the supply chain. The method includes: identifying the instruction set architecture type of heterogeneous firmware to generate an architecture annotation file list; mapping heterogeneous instructions to an intermediate representation to generate a semantic control flow graph; extracting multi-clock domain configuration parameters to generate a multi-clock domain configuration description file; performing multi-clock domain independent time acceleration simulation to acquire cross-cycle state data; analyzing the cross-cycle state cumulative difference detection time triggering conditions; and assessing the risk level of the triggering conditions to generate a risk assessment report. This invention solves the problem that existing technologies cannot detect time-triggered backdoors utilizing the independent clock domain isolation characteristics of coprocessors in heterogeneous multi-core camera firmware.

The invention provides a clock synchronization method and device, terminal equipment and a storage medium, and the method comprises the steps: carrying out the sampling through employing an independent clock, obtaining a discrete sampling signal, carrying out the cross-correlation operation, generating a frame starting point index, calculating the phase difference of two detection sub-blocks in each frame, so as to obtain a global carrier frequency offset estimation value, and carrying out the calculation of the global carrier frequency offset estimation value. Applying reverse frequency offset to the discrete sampling points to obtain a frequency offset compensation signal sequence; extracting a channel impulse response and reconstructing the channel impulse response into a continuous time waveform, taking a difference value between real peak time and the closest integer sampling point moment as sampling time offset, establishing a linear function according to the change of the offset along with a frame sequence, and performing fitting to obtain a time drift estimated value; and obtaining an original result of channel frequency response, and applying reverse phase rotation to the original result according to the time drift estimation value to obtain a channel frequency response sequence after phase correction. According to the invention, joint synchronization of detection signals in two dimensions of time and frequency can be realized on the premise of no external reference clock.

This document describes systems and techniques that enable independent clocking for configuration and status registers (CSRs). The described systems and techniques can provide a clock signal to a CSR set of an IP block with a derived clock rate an integer division slower than a clock rate of another clock signal that enables operation of the IP block, which may include communication between the IP block and an application processor. The derived clock rate is synchronous to but independent of the clock rate of the clock signal. In this way, the application processor and other entities can access the CSR set independent of clocking of the IP block. For example, the application processor can read from or write to the CSR set without waking the IP block from an Auto Clock Gated mode. By so doing, described aspects of independent clocking can reduce power dissipation associated with the CSR set.

The invention discloses a to-be-long-flat set processing method and system, a terminal and a storage medium. The method comprises the following steps: determining a clock break point according to a synchronization relationship and an asynchronous relationship in clock constraint information; generating a first to-be-prolonged flat set for the corresponding generation clock by using the clock port of each generation clock; and combining the first to-be-long-flat set corresponding to each clock break point. According to the invention, the finally obtained second to-be-prolonged flat set can accurately, completely and briefly represent the same or related synchronization relationship in the corresponding chip, and the first to-be-prolonged flat set which is not merged into the second to-be-prolonged flat set can briefly and accurately represent relatively independent clock information in the corresponding chip. The determined clock tree structure can be as simple as possible, the comprehensive information processing amount of the clock tree can be simplified under the same input condition, and the processing result and the processing time can be optimized.

The present application discloses a control method, device and verification method for a clock signal. The method includes: obtaining the original clock frequencies of each node on a data communication path, where the node is an object with an independent clock signal, and the node includes an internal node of a device and a peripheral node connected to the device; if the difference between the original clock frequency of the peripheral node and the maximum original clock frequency among the internal nodes of the device meets a set condition, determining a target matching frequency based on the original clock frequencies of each node on the communication path, where the target matching frequency includes the target clock frequencies of each node, and at least one node among each node has a target clock frequency greater than its original clock frequency; determining, based on the original clock frequencies and target clock frequencies of each node, the nodes that need to perform clock upscaling as target nodes; controlling the clock frequencies of the target nodes to be upscaled to the target clock frequencies of the target nodes, so as to improve the overall data transmission rate of the data communication path.

The invention discloses an output frequency boosting method of a direct frequency synthesizer based on a multi-unit parallel pipeline, which comprises a top layer control module used for generating and outputting independent clock signals and frequency control words and comprehensively controlling a plurality of parallel units to respectively process different phase angles of the same signal frequency; the phase synthesis module is used for receiving the frequency control word, performing phase synthesis on the frequency control word and generating and outputting a phase control word so as to realize multi-unit parallel signal generation; the multiplexer is used for receiving the phase control words, combining phase control word signal segments output by each unit into a continuous total phase control word signal and outputting the continuous total phase control word signal so as to ensure time sequence synchronism and continuous output of the signal; and the pre-compression lookup table module receives the total phase control word, constructs a sine lookup table to realize a phase amplitude converter, compresses the full phase to 1 / 4 storage space based on phase symmetry, and generates and outputs an amplitude signal in real time.

The invention discloses a consistency voting method and device for multi-source time synchronization data, and relates to the technical field of high-reliability time synchronization of avionics, time sensitive networks and the like. The method comprises the following steps: respectively acquiring synchronous data including local capture time, original time deviation and cumulative frequency ratio from a plurality of independent clock sources to obtain corresponding clock source data; performing validity screening on the clock source data; extrapolating the original time deviation of each effective clock source to a set voting moment based on the cumulative frequency ratio to obtain a projection time deviation; based on all projection time deviations, determining an internally consistent credible clock source subset through bounded closure consistency verification; and according to the verification result and the redundancy condition, calculating and outputting system time correction or executing degradation output. According to the method, false deviation caused by asynchronous sampling can be eliminated, deterministic fault isolation and fault-tolerant voting are realized, and the output safety and reliability of the system in a high-safety-requirement scene are guaranteed.

Embodiments disclosed herein relate to synchronizing signals across multiple independent clock domains. In an example, a synchronizer flip-flop circuit is provided. A synchronizer flip-flop circuit (100) includes: a first latch sub-circuit (112) coupled to receive input data (101); and a second latch sub-circuit (117) coupled to the first latch sub-circuit (112). The first latch sub-circuit (112) includes: a first inverter group; a first diode connected transistor (113) coupled in parallel to each of the inverters in the first group of inverters and configured to provide a first bias voltage to each of the inverters in the first group of inverters; and a second diode-connected transistor (114) coupled in parallel to each of the inverters in the first group of inverters and configured to provide a second bias voltage to each of the inverters in the first group of inverters.

Embodiments disclosed herein relate to synchronizing signals across multiple independent clock domains. In an example, a synchronizer flip-flop circuit is provided. The synchronizer flip-flop circuit includes a first latch sub-circuit coupled to receive an input and a second latch sub-circuit coupled to the first latch sub-circuit. The first latch sub-circuit includes a first group of inverters, a first diode-connected transistor coupled in parallel to each inverter of the first group of inverters and configured to provide a first bias voltage to each inverter of the first group of inverters, and a second diode-connected transistor coupled in parallel to each inverter of the first group of inverters and configured to provide a second bias voltage to each inverter of the first group of inverters.

The invention provides a configurable dual-port synchronous static memory and a read-write method, and the memory comprises a storage unit which is used for storing data in a two-dimensional structure, and carrying out the independent access through a write port and a read port; the parameter configuration unit is used for receiving configuration parameters of the configuration memory, the configuration parameters at least comprise storage depth and data width, and the storage structure of the storage unit is configured according to the configuration parameters; the address decoding unit is used for automatically determining address bit width according to the storage depth, and decoding access address signals respectively received by the write port and the read port into address gating signals for accessing the storage unit; and the dual-port access unit is used for respectively controlling a write-in path of a write port and a read path of a read port based on the gating signal under the control of respective independent clocks so as to realize parallel access of different address spaces. A parameter configuration mechanism is introduced, the storage structure can be adjusted as required according to different application scenes, and the adaptability and reuse efficiency of the storage unit are improved.