157results about How to "Fast compression" patented technology

A controllable watch winder for a self-winding mechanical watch, in which a turntable is provided to hold and rotate the watch, including a programmable microprocessor circuit configured to count the number of rotations executed by the turntable. In one aspect, the watch winder is configured to introduce, after the electronic circuit is activated, a delay period before the turntable commences rotating. In another aspect, the circuit may be configured to interrupt the rotation of the turntable with pauses, to break up the rotation into cyclical sets. The circuit may be configured to automatically predetermine the number of rotations in each set. In yet another aspect, the watch winder may be configured to be manually adjustable, to variably predetermine before use, the number of rotations to be executed by the turntable and the length of any pause between rotations.

The invention discloses a data compression method, device and system and a server. The data compression method comprises a calling module, an acquisition module and a compression module, wherein the calling module is used for calling a pre-stored compression mode configuration table including the corresponding relationship between file types and compression modes; the acquisition module is used for acquiring the file types of data and determining whether the compression modes corresponding to the file types exist or not according to the compression mode configuration table, and if yes, acquiring the compression modes corresponding to the file types; and the compression module is used for compressing data to be compressed according to the compression modes acquired by the acquisition module. By virtue of the technical scheme provided by the invention, suitable compression modes can be automatically configured for users, and the compression speed is increased under the condition that the compression ratio is almost not lost, so that both the compression time and the system resource are saved.

An embedded systems architecture is disclosed which can flexibly handle compression of both instruction code and data.

An apparatus and method of compressing a structured document. The structured document is searched once for first and second marks, a first mark indicating a start of an element of the structured document, and a second mark indicating an end of an element of the structured document. When encountering a first mark in the searching step, a representation of the first mark is output and a level counter is incremented, a value of the level counter indicating on which level in the structured document an element is located. When encountering a second mark in the searching step, a second code data is output and the level counter is decremented.

The invention discloses a satellite image compression method and a device for realizing satellite image compression, belonging to the remote sensing and digital image processing field and solving the problems of high demand for encoded data transmission error rate and low processing speed in the existing image compression method. The method of the invention includes the steps of dividing a whole image into sub-images, independently encoding the sub-images, sequential initialization, removal of pixel redundancy, context extraction, preestimate, Golomb encoding and data polymerization; the steps of sequential gradient calculation and context environment parameters upgrade are finished simultaneously with the steps of preestimate and Golomb encoding. The invention improves image compression rate, realizes good error tolerance and good real-time performance and greatly improves the whole encoding efficiency, meeting the demand for wide satellite image data real-time nondestructive compression.

The invention provides a fractal and H.264-based hyper-spectral image compression method. The method comprises the following steps: firstly, converting a hyper-spectral image data cube into video of a YUV (Luma and Chroma) format and transmitting into a coder; performing intra-frame prediction on I frame of the hyper-spectral video by using a macro block flatness-based H.264 fast intra-frame prediction mode discrimination method to remove spatial correlation of a hyper-spectral image; performing block motion estimation / complementary fractal coding on P frame of the hyper-spectral video to remove spectral correlation of the hyper-spectral image; searching optimal matching blocks from a reference frame for various blocks of tree structures of the P frame coded macro block by an MSE (Mean Square Error) criteria, determining an iterative function system coefficient of each block, comparing the rate distortion costs of all block division modes, taking the block division mode with the least rate distortion rate as the final inter-frame coding mode, and recording a final fractal parameter; finally coding and writing residual data of the I frame and the P frame into a code stream by entropy coding CABAC after DCT (Discrete Cosine Transformation) and quantization, wherein the fractal parameter of the P frame is also subjected to CABAC entropy coding.

The present invention discloses a compressing method of the data recorded by the electric power waveform. The compressing process includes the steps of: the collected data is performed by the integer small wave conversion based on the rising format and then all the data having been converted is coded in the Huffman method; the decompressing process includes the steps of: each pressing data that is read in bit is decoded in Huffman method, and then the data having been decoded is performed by the integer small wave contra-conversion. The present invention has the characteristics of a small amount of computing, a high compressing rate, a small distortion factor, a small occupied computer resources, etc. and the method can be realized in a flushbonding system. The compressibility and the distortion factor can be adjusted according to the demand and the flexibility of the using of the software is added. The present invention can also provide a threshold value to the detail information to realize the lossless compressing and the lossy compression. The electric power system waveform recording device in the present can realize a long-time and continuous recording waveform by combining the electric hardware technology under the situation of high sampling rate and big capability and the waveform can be transmitted far away through the communication interface reliably and quickly.

The invention provides a multi-character combination lossless data compression method for binary data. In the invention, data compression comprises the following steps: carrying out primary compression on original binary data to be compressed with a multi-character combination type dictionary compression algorithm, and then carrying out secondary compression on the character strings obtained after the primary compression with a Huffmnan algorithm; and data decompressing comprises the following steps: successively finishing the decompression of the Huffmnan algorithm and the decompression of a lossless compression model in a dictionary creation mode. The method is used to solve the problem of restoring data integrity and has the advantages of high compression ratio, low algorithm complexity and high compression speed; therefore, a new thought for the lossless data compression is provided.

The invention provides a multi-thread fast storage lossless compression method for FASTQ data, and is applied to compression of a DNA sequence. The method comprises a data classification step of inputting original FASTQ data, and dividing short reading of the original FASTQ data into three data flows, namely metadata, a mass fraction and a base sequence; a data compression step of aiming at the metadata, using an incremental encoding way to detect and eliminate redundant information of the metadata; aiming at the mass fraction, using a bit level PPM (Prediction by partial matching) prediction model and arithmetic coding to compress; aiming at the base sequence, using improved arithmetic coding of a fixed order to compress; and a data output step of archiving and merging compression results of different data flows, and outputting final data after compression. The invention further provides a multi-thread fast storage lossless compression system for the FASTQ data. The technical scheme provided by the invention can improve the compression efficiency and compression speed.

The invention relates to an FPGA encoding method and system and a control method for an unmanned aerial vehicle image transmission device. The system comprises an image input module, a wavelet transformation processing module and an SPIHT algorithm encoding module. The image input module is used for receiving collected image data in real time and conducting conversion in the aspect of a data interface protocol on the collected image data. The wavelet transformation processing module is used for conducting wavelet transformation on image original data after the interface protocol is converted so that wavelet coefficients can be obtained. The SPIHT algorithm encoding module is used for encoding in a bit-plane mode, conducting bit-plane division on the wavelet coefficients to form n bit planes which are scanned in parallel and processing each bit plane to obtain encoded binary code streams. The system further comprises an image encoder general control function module and a system initialization function module, wherein the image encoder general control function module is used for controlling the enable of various function modules in the FPGA encoding system and the enable of a state transition process including an input data processing process, an output data processing process and a middle data processing process, and the system initialization function module is used for initializing the various function modules, memories and registers in the FPGA encoding system and for setting a default state.

The invention discloses a sanitary garbage disposal device, which comprises a frame body, a compression groove is arranged inside the right side of the frame body, a variable chamber is arranged inside the frame body on the left side of the compression groove, and first The inner helical locking shaft and the second inner helical locking shaft, the left side of the variable chamber is provided with a first sliding joint groove, the bottom of the first sliding joint groove is provided with a concave groove, and the bottom of the concave groove and the top of the first sliding joint groove There is a first guide rod between them, the first guide rod is slidably connected with the first sliding block extended to the right side, the outer surface of the first guide rod at the bottom of the first sliding block is provided with a first coil, the first The extended part on the right side of the sliding block penetrates into the variable cavity and is in sliding contact with the right wall of the variable cavity. The first sliding block in the variable cavity is equipped with a motor, and the upper and lower ends of the motor are equipped with transmission shafts. The variable cavity There is a transmission cavity inside the upper frame body; the invention has simple structure, convenient operation, low manufacturing and maintenance costs, fast compression speed, high stability, good compression quality, reasonable discharge of sewage, clean and hygienic.

The invention discloses a floating-point-type data lossless compression method for scientific calculation. A data compression part comprises steps: a symbol domain, an exponential domain and a mantissa domain of floating-point-type data are mapped respectively and compressed respectively and the compressed data is stored with a binary bit as a unit. A decompression part comprises steps: effective data of the mantissa domain difference, the exponential difference, the symbol domain and the like are obtained from flag bits, and original data is recovered completely according to the IEEE754 format and reference data. In the compression method, data is divided according to physical meanings of floating-point-type data, and the compression ratio is high. The compression method has no excessive data prediction or transformation algorithms, and thus the compression speed of data is accelerated.

The invention discloses a data compression method based on Huffman coding, comprising the following steps of selecting target data from original data; by means of a dynamic Huffman coding algorithm, generating a local dynamic coding table corresponding to each character of the target data; detecting whether to-be-coded characters in the original data are located in the local dynamic coding table; if so, coding the characters through the local dynamic coding table; if not, coding the characters through a fixed coding table; and storing a data file formed after coding and the local dynamic coding table together as a compressed file of the original data. Obviously, as compared with static Huffman coding, the scheme provided by the invention has better compression ratio; and as compared with the conventional dynamic Huffman coding, the scheme provided by the invention has faster compression speed and lower coding table storage overhead. The invention also provides a data compression system, a data decompression method and a data decompression system based on the Huffman coding, which also can achieve the above technical effects.

The invention relates to a 14-bit width image compression hardware coder which can be used for reducing the storage space and transmission bandwidth required for recording and transmitting high bit width image with 8-14 bits and is developed based on a small wave image compression algorithm with low complexity. The coder comprises the modules as follows: an overall situation state machine controller, four data path gates, four data caches A, B, C and D, an image buffer, a first-stage small wave driver, a second-stage small wave driver, a third-stage small wave driver, a two-dimensional predicator, a two-dimensional small wave variable engine, a data transfer device, an optimization quantizer, a self-adaptive zero-course coder and an index Columbus coder. All the modules are organically combined for parallel processing, thereby realizing high-speed and high-bit width image compression with higher image quality. The real-time compression of a high-bit width camera image can remarkably reduce the image data amount, the storage volume and the requirements for transmission bandwidth.

The invention discloses a concave-convex obvious texture solid floor and a manufacturing method thereof. The concave-convex obvious texture solid floor comprises a substrate layer, wherein a pattern layer is deeply rolled on the surface of the substrate by engraving and rolling. The manufacturing method comprises the following steps: (1) material preparation; (2) concave-convex texture treatment; (3) color modifying treatment; (4) drying; (5) base pain rolling coating; (6) drying; (7) slightly sanding; (8) finish paint rolling coating; (9) drying; and (10) sorting and packaging. The manufacturing method is characterized in that: required concave-convex obvious texture patterns are directly rolled at high temperature on various substrates without texture and then color modification and base paint rolling coating are performed; the solid floor has the advantages of wide application, high compression speed, industrial standardization, rich color, diversified texture and the like; the concave-convex obvious texture floor has higher color contrast and three-dimensional sensor, and has higher economic and social values than other floors; and a low-quality wood material is used to produce the high-quality imitation floor, so the quality of the floor is improved, and a large amount of high-quality rare wood can be saved.

The invention discloses a system and a method for lossless and lossy hybrid compression of spectral bands of a satellite-borne spectral image, which solves the problem that compression ratio and important spectral bands information of the satellite-borne spectral image cannot be simultaneously guaranteed not to be lost. The method includes the steps of: inputting spectral image data and parameters; inputting data and control signals; performing variable initialization; performing local gradient calculation and quantification; combining gradient vectors; predicating the current pixel and pixelcorrection; performing residual Computation, quantization, remapping and pixel reconstruction; updating a hybrid compression module context parameter; calculating a Columbus code parameter k; performing lossy lossless hybrid Columbus coding; and outputting an image compression result. The invention performs improvement on the basis of JPEG_LS algorithm, realizes spectrum selective compression on spectrum image, lossless compression on appointed spectrum and lossy compression on other spectrum, ensures that important information is completely lossless, achieves a certain compression ratio, occupies less resources and has faster compression speed. The method has been used in the Mars reconnaissance spectrum analyzer.

The invention discloses a method for compressing and decompressing a single picture. The method includes creating at least one flag array, classifying pixels of a scanned picture into N types to be stored in the N array according to the preset mode, and recording storage positions of the pixels in the designation array; subjecting the pixels in the N array to direct-current level displacement; converting the scanned picture into YUV (luma and chroma) color space if the scanned picture is a colored picture of RGB (red, green and blue) mode; subjecting each array of the N array to one-dimensional wavelet transform according to each pixel component; and compressing the flag array, writing data into files according to preset sequence to obtain the compressed picture. Compression speed can be increased by classifying color or gray level of the picture by utilizing picture energy as criteria according to a mode of binary tree, picture information loss can be reduced to the greatest extent, high compression is realized and data quantity of the picture is greatly decreased.

The invention belongs to the field of navigation satellite applications and data processing, in particular to a new GNSS observation value data compression and decompression method which comprises the compression and the decompression of rough coordinates and antenna height information in GNSS observation values, the compression and the decompression of time data based on a sexagesimal system, the compression and the decompression of satellite numbers based on the sexagesimal system, the compression of the GNSS observation values based on the sexagesimal system and the recurrence differentialalgorithm, and the integration of the GNSS observation values based on the sexagesimal system and the recurrence integration algorithm.

The invention discloses methods for encoding and decoding an observed value file of a global positioning system (GPS), and mainly aims at management of data transmission and data storage in a network system of a high-frequency sampling large-size reference station. In the methods, a plurality of epoch data are used as a storage unit stored into a single module; in each single module, the epochs of an original file corresponding to the single module are processed by a secondary subtraction method so as to finally form a compressed data sequence to replace the position of the corresponding data in the original file. By adopting the technical scheme, the compression ratio is within 5 percent; as to the file compression in a network real time kinematic (RTK) system, the method is quick and efficient; and the pressure of a data link for transmitting the data is relieved and the cost for data transmission is reduced.

The invention relates to a reciprocating-piston type oil-less air compressor. In the invention, a piston of a compressor is fastened with a connecting rod or integrally manufactured with the connecting rod; and the piston is arranged in an air cylinder and reciprocates and swings relative to the air cylinder. The reciprocating-piston type oil-less air compressor is characterized in that: the air cylinder adopts an offset structure, which means the axial line of the air cylinder is not intersected with the axial line of a crankshaft, so the offset angle of the piston relative to the air cylinder is reduced in the compression stroke, and the lateral pressure and panting strength of the piston on the air cylinder and the abrasion loss of a sealing ring or a sealing rubber cup are reduced; besides, the oval deformation of the sealing ring or the sealing rubber cup is reduced, so the fatigue state thereof is relieved and the screech which is generated by the leakage at an oval gap and the escape of gas is reduced; and moreover, structures such as a closed crankcase structure, a crankcase air inlet soundproofing chamber, an air inlet channel and the like are adopted for effectively reducing the induction noise and the induction jetting noise and an exhaust soundproofing housing is adopted for reducing the exhaust noise, so the reciprocating-piston type oil-less air compressor can be used for manufacturing the air compressor, an air pump, a vacuum pump or a fluid pump.

The invention belongs to machining auxiliary equipment, particularly relates to a hydraulic compacting device adopting hydraulic tightening. The hydraulic compacting device comprises a base body, and is characterized in that a hydraulic cavity and a cover board for sealing the hydraulic cavity are arranged on the lower right side of the base body; an oil inlet is arranged on the cover board; an oil outlet communicated with the hydraulic cavity is arranged below the base body; a piston is arranged in the hydraulic cavity; a piston rod extending out off the hydraulic cavity is connected on the piston; a sliding press plate is arranged in a sliding chute at the top of the base body; and the piston rod is connected with the press plate through a connecting rod mechanism. The hydraulic compacting device of the invention adopts piston driving and drives the press plate to move through a connecting mechanism.

The invention discloses a multithread concurrent data compression method based on an FT processor platform. The implementation steps include that compression parameters are obtained, a compression queue and a write queue are initialized, and a write thread is enabled; each portion of segmented compression data information is determined according to the compression parameters and is stored in the compression queue; compression threads are created according to the determined number of compression threads, each compression thread reads the corresponding segmented compression data according to the received segmented compression data information and carries out compression meta operation, and the compression result data is stored in the write queue; the write thread continuously reads the write queue and writes the compression result data into a result buffer for splicing, meanwhile the compression result data in the write queue already written into the result buffer is released, and finally, the data result after compression is obtained in the result buffer. The multithread concurrent data compression method based on the FT processor makes full use of the multi-core and multithread features of the FT processor and has the advantages of good data compression concurrency, high data compression speed, high data compression efficiency and good compatibility.

The invention provides high-efficiency and environment-friendly garbage disposal equipment, which includes a screening chamber outer casing and gears; the bottom of the screening chamber outer casing is welded to the top of the crushing chamber outer casing; the bottom of the crushing chamber outer casing is connected to the mill The top of the outer casing of the grinding chamber is welded; the bottom of the outer casing of the grinding chamber is welded to the top of the outer casing of the compression chamber; It is fixedly connected with the two extruding blocks; the outer wall of the right end of the outer shell of the compression chamber is provided with a partition plate that runs through the outer wall of the right end of the outer shell of the compression chamber and is movably inserted into the inner cavity of the outer shell of the compression chamber . After the domestic waste is crushed, the present invention grinds the crushed domestic waste, which is beneficial to the subsequent compression treatment operation, can quickly complete the compression treatment, and accelerates the treatment efficiency of the domestic waste.

The invention discloses a simple fast pressing plate which is used for pressing workpieces and is a universal clamp. The simple fast pressing plate is composed of a pressing plate body, a screw rod, a handle, an eccentric cam, a gasket and a nut, wherein the eccentric cam transversely penetrates through the screw rod, the handle is connected with the eccentric cam, on the basis of the principle of the eccentric cam, the simple fast pressing plate is adjusted to be in a proper position by rotating the handle, and then the workpieces are pressed by the simple fast pressing plate. The simple fast pressing plate solves the problem that the clamping force of an ordinary pressing plate is not sufficient, is high in pressing speed and efficiency and has been widely used in work currently, and production efficiency and safe reliability are improved.

The invention discloses an integer compression method and device, which belongs to the field of data compression. The method comprises the steps of obtaining a set of integers to be compressed, the integers to be compressed having the same length and different values; bucket-sorting the integers to be compressed, and generating a target bit array which corresponds to the set of integers to be compressed and has array bits corresponding to the integers to be compressed in the set of compressed integers; and compressing the target bit array by a predetermined compression algorithm to obtain corresponding compressed data to the set of integers to be compressed. Compared with the Huffman coding algorithm by which repeated traversal of the integer set affects the compression speed, the integer compression method and device in the embodiment of the invention only require a single traversal of the set of integers to be compressed in the whole compression process, thereby increasing the compression speed of the integer set.

The invention is applicable to the field of substations and provides a method and a device for compressing data frames of a substation. The method comprises the following steps of: monitoring a data frame sequence of the substation, and storing the first data frame in the data frame sequence; performing the following steps sequentially on the rest data frames in the data frame sequence: judging whether the non-valid data of the current data frame are the same as the non-valid data of the previous data frame; and acquiring and storing the data difference between the current data frame and the previous data frame if yes; and directly storing the current data frame if no. According to the method and the device, the CPU resources can be effectively saved, the method is simple, and the compression efficiency is improved when the compression speed is increased.

The invention relates to compression equipment, in particular to high-efficiency compression equipment for hardware waste, and aims to provide the high-efficiency compression equipment which is used for the hardware waste and is convenient to use, thorough and rapid in compression and good in use effect. The equipment comprises a fixed frame, moving frames, rollers, discs, a third connecting rod, compression blocks, a guide rail, first gears, racks, second rotating shafts, first bearing blocks, a first motor and the like; the first bearing block and a compression tank body are sequentially arranged on the upper side of the lower part of the fixed frame from left to right; and the first bearing block and an input tank body are sequentially arranged on the lower side of the upper part of the fixed frame from left to right. The equipment realizes the effects of being convenient to use, thorough and rapid in compression and good in use effect, a lot of waste hardware equipment can be compressed rapidly by the aid of the equipment, and the equipment is convenient to use.

The invention discloses a video compression method and device. The method comprises the following steps: carrying out slicing processing on a video file to obtain video slices; distributing the video slices to a plurality of processors, and compressing the distributed video slices by the plurality of processors; and recombining the compressed video slices. By adopting the video compression method and device, the advantages of parallel distributed calculation of the plurality of processors are fully used, the computing power of each processor is fully used, the compression speed is fast, and the efficiency is high.

The invention discloses a pre-compression machine for crushing municipal domestic waste. The pre-compression machine for crushing the municipal domestic waste comprises a feed inlet, a compression cavity, a discharge outlet and a motor, wherein a compression rotor is arranged in the compression cavity, the compression rotor is a Reuleaux triangular rotor, and the compression cavity is in a cocoon shape. The pre-compression machine for crushing the municipal domestic waste further comprises a rotor hole, a rotor gear, a rotor shaft and a rotor shaft gear, wherein when the motor operates, the compression rotor is driven to rotate around the center of the compression rotor and revolve around the center of the compression cavity. Compared with the prior art, the pre-compression machine for crushing the municipal domestic waste has the advantages that waste is compressed through the pre-compression machine, so that a waste ball is formed, and the phenomenon that long fibrous waste is wound around a crushing tool when waste is crushed through a crushing machine in the later stage is avoided; feeding, compressing and conveying can be conducted and completed at the same time, and continuous feeding can be achieved; the Reuleaux triangular compression rotor can bear high pressure and is long in service life and high in abrasion resistance; the requirement for high-frequency crushing of the crushing machine can be met.