132 results about "System time" patented technology

Embodiments of the invention disclose a method, a device and a system for processing a wake-up lock, and belong to the field of computer technology. The method comprises the following steps: detecting whether a wake-up lock is in a working state, and if so, obtaining a wake-up parameter corresponding to the wake-up lock, wherein the wake-up parameter comprises an arithmetic operation corresponding to the wake-up lock and an application program corresponding to the wake-up lock; judging whether the arithmetic operation corresponding to the wake-up lock requires a sensor of a terminal; if not, generating a wake-up transfer request according to the wake-up parameter, sending the wake-up transfer request to a server, and releasing the wake-up lock, wherein the server is used for executing the arithmetic operation corresponding to the wake-up lock; and receiving a wake-up message sent by the server, and waking up the terminal according to the wake-up message. By adopting the method disclosed by the invention, after a display screen of the terminal is closed, the system time occupancy of the application program can be reduced, the power consumption of the terminal is reduced in the case that the display screen of the terminal is closed, and the standby time of the terminal is prolonged.

The invention discloses a microservice system time sequence anomaly detection method and device, equipment, a medium and a product, and the method comprises the steps: carrying out the preprocessing of original multivariate time sequence data, converting the data into a sliding window sequence, carrying out the channel independent division of the sliding window sequence into a univariate time sequence of a plurality of channels, carrying out the periodic coding, and carrying out the calculation of the univariate time sequence; the method comprises the following steps: generating a periodic coding sequence, carrying out feature analysis on the periodic coding sequence, obtaining local features and global features, carrying out feature fusion on the local features and the global features, decoding, generating reconstructed time sequence data, and carrying out mean square error calculation on the reconstructed time sequence data and original multivariate time sequence data. According to the method, the abnormal score of each time step is obtained, anomaly detection is carried out based on the abnormal scores, semantic differences of different variables in multivariate time sequence data are accurately distinguished, relation characteristics of the different variables in the micro-service system are fully extracted, and abnormal fluctuation in the time sequence of the micro-service system is accurately detected.

The invention discloses a time synchronization method of a system-on-chip, the system-on-chip and a vehicle. The time synchronization method of the system on chip comprises the following steps: determining daisy chain data transmission delay between a first hardware domain and a second hardware domain; determining a system clock difference between the second hardware domain and the first hardware domain according to the daisy chain data transmission delay; calibrating the clock of the second daisy chain counter according to the system clock difference, so that the clock of the second daisy chain counter is synchronized with the clock of the first daisy chain counter; determining a timestamp of the second subsystem based on first subsystem time information sent from the first hardware domain; wherein the first subsystem time information comprises a timestamp of the first subsystem and clock information of a first daisy chain counter; updating the system time of the second subsystem according to the timestamp of the second subsystem, so that the system time of the second subsystem is synchronized with the system time of the first subsystem; by adopting the method and the device, the time synchronization between the subsystems of the system on chip can be realized.

The invention discloses a time correction method and system and a readable storage medium, and relates to the technical field of digital control systems of nuclear power stations. Comprising the following steps: a target device analyzes received timing data to obtain reference time; after the target device obtains the reference time, the system time of the embedded operating system in the target device is obtained; and the target device corrects the system time of the embedded operating system in the target device based on the reference time. Therefore, according to the time correction method, the time correction device is introduced to synchronously send the time correction data to each target device in the distributed control system of the nuclear power station, and the system time of the embedded operating system is automatically corrected based on the unified reference time; the consistency of the system time of multiple target devices in the distributed control system of the nuclear power station is ensured, the precision, efficiency and reliability of time synchronization are remarkably improved, and a powerful guarantee is provided for safe and stable operation of the nuclear power station.

Disclosed are a system on chip, method and device supporting time synchronization, and a storage medium, which relate to the technical field of time synchronization, the system on chip synchronizes the time of an STBM in the system on chip with the time of an off-chip master clock through a first processor core according to a first preset period; based on the first time of the STBM after time synchronization, calibrating a hardware clock of the first network card to obtain a first time reference; calibrating the time of the STBM based on the first time to obtain a second time reference; synchronizing, by the second processor core, the time of the second network card with the time of the first time reference based on a first time difference between the first network card and the second network card; and synchronizing the system time with the time of the second time reference based on a second time difference between the second time reference and the system time of the operating system. According to the system, double time references can be obtained, sub-microsecond-level synchronization precision is realized, and the strict requirement of a high-precision time synchronization scene on time synchronization precision is met.

According to one embodiment, an Information Handling System (IHS) includes a memory to store a secure event log associated with one or more attributes of the IHS, and computer-executable code to obtain a system time from a system clock of the IHS, obtain a network time from a network time protocol (NTP) server, and compare the system time against the network time. When the obtained system time does not match the obtained network time, set a system clock attack chain vector in the secure event log and generate an Indicator of Attack (IoA) report based at least in part, on the system clock attack chain vector.

The invention discloses a time synchronization information security review method and system based on self-timekeeping, and relates to the data processing and password technology, and the method comprises the steps: receiving clock information input of a higher-precision external node, and taking the clock information input as a reference to measure the time difference of a local clock; a time difference model is trained in advance according to historical time difference data; according to the trained time difference model, the measured time difference is examined based on data division and data fitting, so that an examination result is obtained; and updating the local clock according to the review result. According to the embodiment of the invention, training and fitting are carried out on a large amount of historical data at a local clock end, so that a relatively accurate and reliable data change trend on a specific data bit in clock information is obtained, and preliminary prediction and review functions on the specific data bit in the future are realized; the possibility of successful transmission of illegal information and the influence of the illegal information on the time synchronization precision of the system are greatly reduced, and the safety and reliability of the time synchronization system are remarkably improved.

A clock synchronization method is disclosed. The method comprises receiving master timing synchronization data from a master clock device, wherein the master timing synchronization data is based at least in part on quantum data obtained from a first quantum device of the master clock device. The method comprises determining local timing synchronization data that is based at least in part on local quantum data obtained from a second local quantum device, wherein the second local quantum device is entangled with the first quantum device such that the local quantum data and the quantum data obtained from the first quantum device are identical at a same time. The method comprises using the determined local timing synchronization data and the received master timing synchronization data to determine a timing correction factor. The method comprises correcting a local system time using the timing correction factor.

Disclosed in the present invention are a time synchronization method and system, an electronic device, a storage medium and a vehicle. The method comprises: on the basis of a defined global time management module, calibrating each piece of obtained time data, so as to generate global time data; on the basis of a defined time synchronization protocol, carrying the global time data to each module requiring time synchronization; analyzing the defined time synchronization protocol, so as to obtain analyzed global time data; and in response to a time synchronization signal and on the basis of each module requiring time synchronization, synchronizing, by means of the analyzed global time data, system time comprised in each module requiring time synchronization, wherein the global time management module is a master node for time synchronization, each module requiring time synchronization is a slave node for time synchronization, and the master node communicates with the slave nodes via the Ethernet. The method avoids latency in time data transmission across systems during cross-system communication, thereby improving the time accuracy, and reducing the risk of incorrect time display.

The invention provides a method and a device for realizing time migration, a storage medium and a computer program product. The method comprises the following steps: under the condition that a target process calls a time correlation function in a kernel, acquiring context information when the target process runs through a time migration simulation program pre-mounted in the time correlation function; based on the context information, determining a time migration strategy matched with the target process as a target time migration strategy; and according to the target time migration strategy, determining the system time after migration, and returning the system time to the target process. According to the invention, the flexibility of time migration can be improved.

The present invention provides an electronic device, a clock calibration method, a storage medium, and a program product, which can be applied in the field of computer technology. The electronic device includes: a switch element electrically connected to a first controller, a processor, a clock generator, and a second controller; the second controller is configured to control the switch element to electrically connect the first controller to the clock generator when the electronic device is in an offline state; the first controller is configured to, when the first controller is electrically connected to the clock generator, perform a first calibration on the clock generator using a first reference time obtained from a time reference device to obtain a first calibrated clock generator; and, in response to an alarm signal sent by the first calibrated clock generator at a predetermined time, obtain a second reference time from the time reference device based on a first time difference between a first current system time of the first controller and the predetermined time, and perform a second calibration on the first calibrated clock generator using the second reference time.

The present invention discloses a method for automatically synchronizing the real time of an OS and its related components, and relates to the field of time synchronization. A corresponding time zone mark is generated according to the time zone of the RTC time, the RTC time is used as the system time of the OS, and it is judged whether the time zone represented by the time zone mark is consistent with the time zone represented by the time zone definition of the OS. If they are consistent, the system time is converted into the real time according to the original time conversion configuration of the OS, and if they are inconsistent, the system time is modified according to the preset time conversion configuration of the OS. Since the OS has a time zone definition for the RTC time, when the time zone of the RTC time is equal to the time zone defined by the time zone, the OS can execute the original steps, that is, the original time conversion configuration to convert the system time to obtain the real time. If they are not equal, the preset time conversion configuration is used to modify the system time to avoid modifying the system time into an erroneous real time, and ensure that the real time finally obtained is consistent with the real time required by the user.

The application discloses a time synchronization method, device, equipment and medium, relates to the technical field of time synchronization, and is applied to an embedded device and comprises the following steps: receiving an analog second pulse signal sent by an external device by using a general input and output pin, and recording a raw system timestamp corresponding to an arrival time of the signal; compensating the raw system timestamp according to a preset delay compensation parameter, and performing jitter filtering processing on the compensated timestamp to obtain a processed timestamp; and reporting the processed timestamp to a PPS subsystem, so that a preset time synchronization service calibrates a system time of the embedded device based on the processed timestamp read from the PPS subsystem. The application can realize high-precision time synchronization of the embedded device by using the external device to simulate a PPS signal.

The invention provides a main and standby switching method and system for a water dispatching automation system, and relates to the field of water dispatching automation and data processing. The method aims at solving the problems that in an existing method, business event flow sequential logic is ignored, and instructions are prone to being disordered and lost due to switching. The method is applied to a framework comprising a main system, a standby system and a time source, and the main system and the standby system are synchronous in time. When executing the water dispatching control instruction, the main system generates a water dispatching event containing instruction content and a timestamp, and stores the water dispatching event in a shared event sequence cache region; the standby system periodically pulls an event, simulates execution after verification by a business rule engine in combination with an associated context, constructs an event node tree diagram with a weight, and prunes based on an actual result; and when the switching is triggered, comparing the actual result of the main system with the execution sequence of the standby system, matching an adaptive path, and avoiding error instruction marks. The method guarantees the time sequence consistency and logic correctness of the event flow, achieves the intelligent seamless switching of a main system and a standby system, and guarantees the continuous and stable operation of a water dispatching service.

The invention relates to the technical field of communication, and discloses a cross-asynchronous clock domain time correction method and device, equipment and a medium, and the method comprises the steps: obtaining target system time; judging whether the target system time is updated; and correcting the target system time by adopting a cross-domain transmission parameter or a local time sequence parameter based on an updating result of the target system time, the cross-domain transmission parameter at least comprising a clock period of the target clock domain, and the local time sequence parameter at least comprising the corrected system time at the last moment. According to the method, the cross-domain transmission parameter or the local time sequence parameter is dynamically selected for correction according to the time updating state of the target system, the time delay deviation of cross-clock transmission or the time continuity without updating can be eliminated according to specific conditions, and the time precision is improved.

The application provides a time calibration method, and relates to the technical field of electronic equipment, which comprises the following steps: when entering a starting mode, obtaining a historical time synchronization time and a system time; obtaining a first time difference according to the historical time synchronization time and the system time; obtaining a current compensation time according to the first time difference, a historical time deviation parameter and a historical compensation time; obtaining a compensated system time according to the system time and the current compensation time, and updating the historical compensation time to the current compensation time; if a time synchronization signal is received, obtaining an input time and the compensated system time, and updating the historical time deviation parameter according to the input time, the compensated system time and the historical time synchronization time, so that the method is more stable, accurate and adaptive to an offline environment.

The present invention discloses a virtual cluster time synchronization method based on PCIe passthrough, belonging to the technical fields of virtualization and network time synchronization. First, based on the PCIe passthrough technology, the virtual cluster nodes are bound to the underlying clock card to obtain the underlying physical clock time; then, a soft interrupt signal is generated through a timer to enable the virtual nodes to read the clock information of the underlying physical clock card at the same agreed time, while measuring the timer delay and correcting the time read from the clock card in real time; finally, the clock error between the virtual cluster nodes can be obtained by calculating the physical time values of the two clock cards. The present invention utilizes the high-precision hardware of the clock card and, with the help of the PCIe passthrough technology of the virtual machine, can accurately achieve the measurement of system time synchronization between virtual clusters.

The invention belongs to the technical field of power utilization information acquisition systems, and discloses an automatic clock calibration method and system for an acquisition terminal, and the method comprises the steps: S1, judging whether the acquisition terminal is restarted after being restarted; if power-off restarting is carried out, the step S2 is executed; s2, judging that the current time of the clock or the voltage of the clock battery is out of a preset range, executing S3, and otherwise, executing S9; s3, closing an original clock calibration program of the acquisition terminal; s4, creating and initializing a virtual task scheme, and writing the virtual task scheme into a file and a database; s5, acquiring the total number of the electricity meters, and determining the number threshold value of the electricity meters needing to be read successfully; s6, executing a virtual meter reading task; s7, calculating reference time according to the time data of the electric meter acquired by the virtual meter reading task; s8, setting the reference time as system time; and S9, running a task initialization process. The clock automatic calibration method has strong timeliness and initiative, and is high in stability.

The present disclosure provides a method for processing application information, an electronic device, and a storage medium, and relates to the technical field of communications. The method includes: determining a target time period based on a current system time and historical usage information of at least one application; and screening usage record information of the at least one application according to the determined target time period to obtain target information, wherein the target information is information generated in a historical time period matched with the target time period, and the usage record information is usage information of the at least one application in a plurality of time periods.

The invention provides a time synchronization method, device and system of a master device and a slave device, computer equipment and a storage medium, and relates to the technical field of wireless transmission, the master device sends a first broadcast packet to the slave device, the first broadcast packet is sent only once, and therefore it is ensured that when the time difference between the master device and the slave device is calculated, the time difference between the master device and the slave device is calculated. The time difference is corresponding to receiving and transmitting of the same broadcast packet, and when the propagation time of electromagnetic waves between two devices is ignored, the time related to the time difference corresponds to the same world time, so that the system time of the slave device can be accurately calculated; the clock synchronization updating between the master device and the slave device can be completed under the condition of considering broadcast delay.

The application discloses a method for protecting time stamp of embedded system, which is executed based on a time stamp protection time correction module in the embedded system, and comprises the following steps: step S1, optimizing the floating point operation function of the compiling tool used by the time stamp protection time correction module, and eliminating the problem of abnormal zero of the floating point operation result; and step S2, the time stamp protection time correction module creates a time system data receiving communication link based on a preset configuration, and configures the time system data receiving timeout parameter of the communication link; the application solves the technical problems of time stamp abnormality, false time correction and poor stability caused by step-by-step time correction, operation defects of the compiler, and coupling of the time correction module and the service data processing module.

A method for synchronizing time between a central server and an automated vehicle (AV) includes exchanging a sequence of time synchronization (TS) messages and generating a set of time offsets between a pair of TS messages among the sequence of TS messages. The method further includes changing a system time of the AV using a time drift estimate defined by a set of time weighting models that are a function of at least one of a plurality of time inputs or the set of shift time offset values, and controlling the AV using the system time and one or more shift instructions providing travel commands from the central server.

This invention belongs to the field of BMC system time synchronization technology, specifically providing a method, apparatus, device, and medium for the first time synchronization during the BMC startup phase. The method includes the following steps: During the BMC startup phase, determining whether the time of the BMC management controller and the server has been successfully synchronized; determining whether a configuration file exists; if synchronization is successful and the configuration file exists, obtaining the last recorded time stored in the configuration file; comparing the obtained time with the time of the synchronized server; if the obtained time is faster than the synchronized server time, setting the obtained time as the current time of the BMC management controller; otherwise, using the synchronized server time as the current time of the BMC management controller; and periodically recording the current BMC management controller time into the configuration file during the startup process. This reduces the difference from the standard time caused by abnormal synchronization time during the first synchronization phase of the BMC startup phase.

The invention relates to an interrupt response time detection method and device, equipment, a medium and a program product. The interrupt response time detection method comprises the steps that in response to monitoring that a timer used for interrupt response time detection in an operating system is overtime, a detection program reads a first timestamp from character equipment in a kernel mode of the operating system and triggers the character equipment to send an event notification signal to the detection program, the detection program is a program used for detecting the interrupt response time in a user mode of the operating system, and the first timestamp is a timestamp when the operating system generates the current interrupt; in response to the received event notification signal, the detection program calls a callback interface corresponding to the event notification signal in a user mode in the operating system, and obtains a second timestamp from the callback interface, the second timestamp being a timestamp that the operating system starts to process the current interruption by using the callback interface; based on the first timestamp and the second timestamp, the detection program determines an interrupt response time for the current interrupt.

The embodiment of the invention provides a handshake method and device for time synchronization of a multi-modular redundancy computer system, and the method comprises the steps: transmitting a synchronization request instruction to a handshake synchronization unit of a local machine of each module by a CPU (Central Processing Unit) of each module according to a preset time window; a handshake pulse signal is generated through the pulse generation logic subunit of each module, and the handshake pulse signal is sent to other modules; when a handshake pulse signal of the corresponding module is detected by a pulse edge detection subunit, corresponding to other modules, in the local machine of each module, recording a handshake pulse receiving moment; aiming at each module, the module has the handshake pulse receiving moment and the own handshake pulse generating moment in the preset synchronization time period at the same time, which indicates that the current handshake synchronization of the module and the module emitting the handshake pulse corresponding to the handshake pulse receiving moment is successful. Hardware logic is adopted to realize handshake synchronization logic among multiple modes, the cost is low, and handshake is fast.

Techniques for performing background refreshes of a storage device using timestamps from a host are described. In one example, the method involves receiving a timestamp from the host, storing the timestamp in a storage device, and determining a retention time for data stored in one or more blocks of the storage device based on the timestamp relative to a second timestamp indicating a time when the data was written to the one or more blocks. In response to determining that the retention time exceeds a threshold, the storage device moves the data to one or more other blocks of the storage device, which may include interleaving activity from the host with the refresh writes.

The invention provides a system time determination method and device, a storage medium and a product, and relates to the technical field of communication. The method comprises the following steps that: remote terminal equipment sends an acquisition request to relay terminal equipment, wherein the acquisition request is used for requesting the offset between a system frame number (SFN) and a direct frame number (DFN); the relay remote equipment sends the offset to the remote terminal equipment; and the far-end terminal equipment deduces the SFN timeline from the DFN timeline based on the offset, and determines the system time according to the SFN timeline. According to the mode, the remote terminal equipment can obtain the system time.

The embodiments of the present application provide a time synchronization method and system, an electronic device, a computer-readable storage medium, and a computer program product, wherein the time synchronization system includes: an observation unit, a clock difference unit, and an adjustment unit. The observation unit determines an asynchronous two-way code pseudorange observation amount between the first device and the second device. The clock difference unit determines a coarse clock difference between the first device and the second device based on the asynchronous two-way code pseudorange observation amount. The adjustment unit adjusts the system time of the first device or the second device based on the coarse clock difference to synchronize the system time of the first device and the second device. After the system time is synchronized, the observation unit determines a synchronous two-way code pseudorange observation amount between the above-mentioned devices at a preset time point. The clock difference unit determines a precise clock difference between the above-mentioned devices based on the synchronous two-way code pseudorange observation amount. The adjustment unit adjusts at least one of the frequency and phase of the clock source of the first device or the second device based on the precise clock difference.

The invention relates to the technical field of distributed system time synchronization, in particular to a data aggregation isochronous synchronization method and system applied to a distributed system, and the method comprises the steps: selecting a synchronization algorithm to carry out synchronization optimization, and the synchronization optimization comprises the following steps: broadcasting time information to each slave node through a master node to carry out clock synchronization; each slave node performs parallel data acquisition and aggregates the data to the master node; performing time alignment between the master node and the slave node through clock skew compensation and network delay compensation, and performing isochronous synchronous data fusion to obtain synchronized data; judging whether the synchronization precision of the synchronized data reaches the standard or not; if not, an error is fed back to the synchronization algorithm, clock synchronization parameters are adjusted again, and synchronization optimization is circularly carried out; and if the standard is reached, outputting the synchronized data. According to the invention, synchronization optimization is carried out, time alignment is carried out through clock skew compensation and network delay compensation, and the clock synchronization precision of each node in the distributed system is improved.

The present application discloses a method and device for RTC clock time synchronization on a real-time operating system. The method includes: obtaining crystal oscillator-related data of the RTC clock and RTC time information, obtaining temperature data of the electronic device and system time information of the real-time operating system; determining the correlation between data points in the crystal oscillator-related data; determining crystal oscillator key point data in the crystal oscillator-related data based on the correlation and the crystal oscillator-related data; determining temperature key point data corresponding to the crystal oscillator key point data in the temperature data; determining a synchronization interval based on the RTC time information, the crystal oscillator key point data, the temperature key point data, the temperature data, the crystal oscillator-related data, and the system time information; and performing time synchronization on the RTC clock according to the system time information at the synchronization interval, so as to accurately determine a suitable synchronization interval, improve the synchronization between the RTC clock time and the system time, and reduce the impact on the functional life of the RTC.