5results about How to "Achieve compression" patented technology

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.

This utility model discloses a corrosion-resistant double-spring safety valve, relating to the field of spring safety valve technology. It includes a valve body with valve covers fixedly connected to both ends of the valve body's top. Two fixed rods are symmetrically fixedly connected to the top of each valve cover, with a top plate fixedly connected to the top of each rod. A valve stem is slidably connected to the middle of the valve cover, and a support block is fixedly connected to the top of the valve stem. This utility model allows adjustment of the rotation of the threaded rod to engage with a first pressing plate, causing the plate to move downwards in a predetermined direction, thereby applying longitudinal compressive force to the lifting plate. The screw structure of the threaded rod causes the first pressing plate to move vertically, generating a compressive force, thus achieving compression and pressing of the lifting plate. The core function is to adjust the distance between the support block and the lifting plate. By adjusting the relative position of the threaded rod and the first pressing plate, the distance between the lifting plate and the support block is precisely controlled, thereby adjusting the compressive force on the limiting spring and affecting the range of motion and pressure of the valve stem.

This invention relates to the field of fault diagnosis technology for high-voltage, high-capacity DC-DC converters, and provides an online diagnostic method and system for open-circuit faults in IGBTs of CETDC submodules. The method includes: constructing a fusion representation of multi-channel capacitor voltages; establishing a VMD adaptive decomposition optimized by the INFO algorithm; constructing a composite fitness function and constraining the optimization process; establishing a sensitive mode screening based on envelope entropy statistical characteristics; constructing multi-domain feature vectors of sensitive modes and establishing a fault identification model; and establishing interpretability analysis and key feature compression. This invention maintains high-precision diagnosis under complex operating conditions and noise disturbances, and improves the real-time performance, stability, and engineering usability of online deployment through a closed-loop process of "parameter adaptive decomposition - sensitive mode screening - key feature compression - attention time-series identification - interpretability verification".

A method and system for compressing a Transformer model for autonomous vehicles (RVs) is disclosed. The method includes acquiring image sequence perception data from an RV's onboard camera, obtaining an input sequence matrix through word segmentation and tokenization; extracting features using an attention mechanism, deriving a fourth-order tensor kernel representation to construct its tensorized representation; decoupling spatial dependencies and feature channel mapping relationships using the Kronecker structure and linear homomorphic properties of the fourth-order tensor kernel; quantifying the upper bound of error using a Frobenius norm through Taylor expansion of the local linearization activation function; modeling the Transformer Block as a whole as a fourth-order tensor kernel, performing TT-SVD dual-kernel decomposition to achieve target position-related spatial attention and channel mapping while maintaining inference accuracy; and mapping the compressed dual-kernel back to physical space to construct a model suitable for embedded inference chips in RVs. This invention can reduce inference latency and meet the requirements for interpretable compression.

The application discloses an Instant-NGP model compression method based on a context model, and the method comprises the following steps: constructing and training a context model customized for a hash representation of three-dimensional and two-dimensional mixing; estimating the parameter values in the hash table by using the context model; fusing the information of all index nodes generating hash conflicts in the estimated parameter values; and realizing entropy coding by using an arithmetic coding technology, so as to realize the purpose of model compression. The application introduces the context model to estimate the binary parameter values in the hash representation, so as to reduce the information entropy, and finally uses the arithmetic coding technology to realize the compression purpose.