4results about How to "Reduce read" patented technology

The application relates to a fingerprint library reconstruction method and device, equipment, a readable storage medium and a program product, and relates to the technical field of data recovery backup. The method comprises the following steps: reading the head part of a data file; acquiring the head part offset of each data block in the data file according to a bit set carried in the head part of the data file; reading the head part of each data block in parallel according to the head part offset of each data block, and obtaining the data block fingerprint and metadata carried in the head part of each data block; and inserting the data block fingerprint and metadata corresponding to each data block into a fingerprint library. The method can reduce the reading of invalid data and read the head part of each data block in parallel, so as to improve the fingerprint library reconstruction efficiency.

This invention relates to the field of multimedia video processing and playback control technology, specifically a video segment-level content management and control method and system, comprising: a time-series discrete mapping step: obtaining a server-side rule set and mapping it to a time-series state index structure with video durations divided into discrete-time graticles; an asynchronous look-ahead detection step: calculating the look-ahead time based on the current playback time using an independent asynchronous thread and reading the corresponding graticle data from the bitmap; an instruction generation and caching step: generating instruction objects based on graticle control identifiers using preprocessing logic and pushing them sequentially into an instruction circular queue; and a frame-level synchronous application step: checking the queue during main playback thread rendering, and applying the instruction if the current time matches the instruction trigger time. This invention reduces playback CPU usage, eliminates micro-stuttering caused by main thread blocking, and ensures accurate triggering of control logic at the frame level.

The embodiment of the application discloses a kind of parameter calculation methods under asymmetric short-circuit fault condition. Among them, the method comprises: under symmetric short-circuit fault condition, obtaining the expected current ac component oscillogram of symmetric short-circuit;By expected current ac component oscillogram, the current effective value and the phase angle difference of current voltage of multiple time are measured;Under asymmetric short-circuit fault condition, the voltage phase angle of multiple time is measured;According to current effective value, the phase angle difference of current voltage and voltage phase angle, attenuation coefficient is calculated;According to attenuation coefficient, direct current time constant is calculated;According to current effective value, the phase angle difference of current voltage, voltage phase angle and the direct current time constant determine asymmetric short-circuit current expression, so current expression under asymmetric short-circuit fault condition can be simply and accurately obtained, and the operation amount and error rate are reduced.

The application provides a data processing device, a data processing method and related devices, comprising a neural network processor, first, according to the channel number n of the first data, the first data is divided into n first sub-data, the first data represents data to be stored, n is a positive integer less than or equal to M / 2; each first sub-data is written into a circular cache space composed of INT(M / n) ring cache space groups, and any one circular cache space is used for storing any one first sub-data. The area of the cache control circuit in the neural network processor can be reduced by a specific storage space architecture, and the power consumption of data writing and reading is reduced.