88 results about "Parallel compression" patented technology

An memory module including parallel data compression and decompression engines for improved performance. The memory module includes MemoryF/X Technology. To improve latency and reduce performance degradations normally associated with compression and decompression techniques, the MemoryF/X Technology encompasses multiple novel techniques such as: 1) parallel lossless compression/decompression; 2) selectable compression modes such as lossless, lossy or no compression; 3) priority compression mode; 4) data cache techniques; 5) variable compression block sizes; 6) compression reordering; and 7) unique address translation, attribute, and address caches. The parallel compression and decompression algorithm allows high-speed parallel compression and high-speed parallel decompression operation. The memory module-integrated data compression and decompression capabilities remove system bottlenecks and increase performance. This allows lower cost systems due to smaller data storage, reduced bandwidth requirements, reduced power and noise.

A ligation clip applicator design is provided that is particularly applicable to placement of a surgical ligation clip during a laparoscopic surgical procedure. The applicator has a magazine including first and second longitudinally extending partially closed channels within which enlarged portions of a ligation clip are received and held in an open position. First and second substantially parallel compression members are attached to the magazine and have first and second channel extensions therein aligned with the first and second channels of the magazine for receiving the first and second enlarged portions of the clip. The channel extensions include first and second releasing openings. The compression members close about a vessel, remaining substantially parallel as they close. The clip is pushed forward into the compression members to a position where the enlarged portions of the clip are aligned with the releasing openings, permitting the clip to be released to close and ligate the vessel.

A method and apparatus are provided for controlling the quantization level in a digital video encoder that comprises a plurality of parallel compression engines (12). The input picture is partitioned into a number of panels (10) and each panel is processed by a distinct compression engine (12). A reference quantizer scale is determined before encoding a frame of video. The reference quantizer scale is used at the first slice of every video image panel being processed by the video encoder. The quantizer scale at the last slice of the image panel is then forced to be the same as the first slice. The forcing step can use a piecewise-linear feedback formula. A group of pictures (GOP) target bit rate is adjusted based on the number of film pictures and non-film pictures currently in the processing pipeline of at least one of the compression engines. A higher target bit rate is provided for non-film pictures. A buffer (16) level of the video encoder is used to control the start of a new group of pictures (GOP). The start of a new GOP is delayed if the buffer (16) does not have sufficient space to accommodate an intra-coded (I) frame for the new GOP.

A system and method are disclosed for parallel compression and decompression of a bitstream. For compression, the bitstream is separated into a plurality of components, and the components are encoded using a compression algorithm. Packets are then constructed from the encoded components. At least one packet is associated with each encoded component and comprises header information and encoded data. The packets are combined into a packetized encoded bitstream. For decompression, the packets are separated from the packetized encoded bitstream using the header information. The packets are then decoded in parallel using a decompression algorithm to recover the encoded data. The plurality of components are reconstructed from the recovered encoded data and combined to recover the bitstream.

The invention discloses a data parallelism compression method. The data parallelism compression method comprises the step of reading, namely, data to be compressed are read from a memory device through an I/O, the step of segmenting, namely, data to be compressed are evenly segmented into N data blocks which are stored in an input buffering area corresponding to each data block, the step of compressing and encoding, namely, processes control the data blocks in the corresponding input buffering areas, the data blocks are compressed and encoded through a multithreading method, and the data which are compressed and encoded are stored in an output buffering area, and the step of writing, the data which are compressed and encoded in all processes in the output buffering area are merged, and the merged data are written to an output file. According to the data parallelism compression method, an ideal compression ratio is obtained, time for compressing is greatly shortened, the data parallelism compression method can be well applied to a cloud storage or database system, the problem of low compression timeliness is solved, and whole performance of compression is improved.

An enhancement that improves the performance of test and measurement equipment such as digital oscilloscopes and arbitrary waveform generators through the use of compression and decompression is described. The present invention is particularly effective for compressing and decompressing high-speed, bandlimited analog signals that are not appropriately or cannot effectively be compressed by prior art speech, audio, image, and video compression algorithms due to various limitations of such prior art compression solutions. The present invention improves digital oscilloscopes by compressing the sampled version of an analog waveform under observation in real time, allowing a significantly longer duration of the waveform to be stored in the oscilloscope's capture memory, when compared with the duration of the same signal's uncompressed waveform stored in the same memory. Similarly, the present invention improves arbitrary waveform generators by storing a compressed version of a desired arbitrary waveform, instead of the uncompressed version of the arbitrary waveform, in the signal generator's waveform memory. During signal generation, the compressed waveform is decompressed in real time. The uncompressed waveform drives a D/A converter that generates the desired analog waveform. The present invention's simplicity, and its ability to be implemented using parallel compression and decompression elements, allows its use at the high sampling rates of test and measurement instruments. Using the present invention, storage elements in test and measurement equipment can hold significantly longer waveforms in a fixed amount of memory. Users of the present invention can also determine the proper balance between the fidelity and the duration of the decompressed waveform by adjusting various compression and decompression control parameters.

The present invention provides a device for several blocks combined compressing video data and a method thereof, the device comprises a camera head, an image division processor, several single-block compressing treatment modules, a microprocessor and a memorizer, wherein, the single-block compressing treatment modules are connected with the image division processor and the microprocessor respectively, the memorizer is connected with the microprocessor and each single-block compressing treatment module respectively, and the image division processor is connected with the camera head and the microprocessor respectively. The present invention realizes the compression of high-definition video data and can be effectively applied in any high-definition image sampling system, especially in a patching display wall system of large screen DLP beitou TV; the system can not only effectively accomplish high-definition image sampling, but also can compress and memorize the data in real time and for a long period; and it has notable effects on enhancing the quality of multimedia products and on improving the compressing ca[ability of the high-definition video.

The invention discloses a method for realizing parallel compression and parallel decompression on an FASTQ file containing DNA (deoxyribonucleic acid) sequence read data. By aiming at the compression and the decompression of the FASTQ file containing the DNA sequence read data, by utilizing circular double buffering queues, circular double memory mapping and memory mapping and by combining the data segmentation processing technology, the multi-thread streamline parallel compression and parallel decompression technology, the read-write sequence two-dimensional array technology and the like, the parallel compression and the parallel decompression between multiple processes of the FASTQ file and between in-process multiple threads is realized. The parallel compression and parallel decompression can be realized based on MPI and OpenMP, and also can be realized based on the MPI and Pthread (POSIX thread). According to the method disclosed by the invention, by fully utilizing all computational nodes and the powerful computational capability of an intra-node multi-core CPU (central processing unit), constraints of resources, such as a processor, a memory and the like, on a serial compression and decompression program, can be released.

The invention provides a mass small tile file storage management method based on hadoop. According to the method, sequencing is carried out through a Hibert curve, and then, grid tile data is subjected to serialization compression storage by a Sequence File technology of the hadoop pre se; when tile compression blocks are generated, the multithreading parallel compression of a plurality of servers is realized, tile index information is generated, and the mass file library entering storage speed is accelerated; the regular naming of block file names is managed, and efficient storage, fast reading and high-performance grid data service can be provided for mass multi-source and multi-version grid small tiles; and ITMS (Improved Tile Map Service) is designed, and the problem of delay and bandwidth occupation caused by original data transmission and real-time data processing request responding, so that the project data retrieval and transmission requirements are met.

A parallel compression test circuit of a memory device disperses peak current and reduce noise by operating input/output amplifiers at different timings in a parallel compression test mode. The parallel compression test circuit comprises an input/output amplification control unit for activating a plurality of input/output amplifiers connected to a selected bank in a normal mode, and activating the plurality of input/output amplifiers in each bank at different timings in a test mode.

A parallel compression test circuit of a memory device operates write drivers sequentially in a parallel compression test to disperse peak current and reduce noise. The circuit comprises a write driving control unit for generating a plurality of write driving control signals in response to a column operation pulse signal at the same timing in a normal mode, at a different timing in the parallel compression test mode.

The invention relates to a method for parallel compression of massive seismic data and belongs to the technical field of petroleum seismic exploration data processing. The method for the parallel compression of the massive seismic data is characterized in that: seismic data cube data is obtained by means of carrying out conversion on three dimensional seismic data through the utilization of a CPU, and the seismic data cube data is subjected to decomposition and secondary decomposition to obtain seismic data sub-blocks and seismic data blocks; then the seismic data is transmitted to a GPU block by block; the parallel compression is carried out through employing a visual perception model, and fusion is carried out on compression results of all the seismic data blocks to obtain a compression result of all the seismic data. According to the method for the parallel compression of the massive seismic data of the invention, the compression quality is guaranteed, and at the same time, the compression speed of the seismic data is substantially raised, so that the parallel compression can be carried out on common computers through the common GPUs. The operation costs are saved. The usage is convenient and the economic benefits are good.

This invention relates to one single or double cylinder capacity control compressor, which comprises one double cylinder compressor with double liquid storage and one volume switch device, wherein, the said compressor blades chamber adopt sealed structure connected to one gas control pipe; at double gas entrance, gas cylinder sealed blade chamber and high voltage discharge tube are passed with one or two four-way valve for controlling gas pressure difference to realize the switch between single cylinder compressor and double parallel compression to get discharge volume from cylinder discharge volume.

The invention discloses a method for realizing real-time data parallel compression by utilizing GPU (Graphic Processing Unit) cooperative computing. In order to increase the efficiency of processing large-scale data compression by a real-time database and increase the system data processing ability, the data compression is realized by using a GPU cooperative computing mode by adopting a CUDA (Computer Unified Device Architecture) technology, and the compression algorithm adopts a common revolving door compression algorithm of an industrial real-time database. A compression algorithm flow which is modified according to a GPU parallel method is shown in an attached diagram of the abstract. According to the method for realizing data compression computing by adopting GPU parallelization, disclosed by the invention, the compression efficiency is increased by about 70%; and the increasing of the compression efficiency means that the operation load of a CPU (Central Processing Unit) can be reduced to a certain degree, and the performance of the whole real-time database system can be increased.

The invention relates to a siphon gas-liquid separation and oil return device in a parallel compression refrigeration unit. The siphon gas-liquid separation and oil return device comprises an air suction header, an air return pipe of an evaporator and an air suction branch pipe of a compressor, the air return pipe of the evaporator is arranged at the top part of the air suction header, the air suction header is connected with an air suction port of the compressor by the air suction branch pipe of the compressor, the air suction branch pipe of the compressor is extended into the middle part or the position above the middle part of an inner cavity of the air suction header from the bottom part of the air suction header, one end of a siphon oil return pipe is connected with the air suction branch pipe of the compressor, and the other end is extended into the middle part of the position below the middle part of the inner cavity of the air suction header from the top part of the air suction header. The device has simple structure and convenient processing, and the pressure of an airflow pipeline is reduced by improving the height of the air suction branch pipe of the compressor inserted in the air suction header; the device adopts the thinner siphon oil return pipe for absorbing oil liquid, thereby effectively controlling the liquid absorption of the compressor, further improving the operation efficiency of a system and the reliability of the compressor and enhancing the product performance.

The invention discloses a large-size image compression processing system and a method. The image compression processing system comprises a storage device used for storing image data and an FPGA. The FPGA is embedded with a cutting module, a plurality of parallel compression modules and a combination module, wherein the cutting module is used for reading a to-be-processed image in the storage device, cutting the image into a plurality of image blocks and distributing the image blocks respectively to the plurality of compression modules; the compression modules are used for carrying out compression processing on the distributed image blocks respectively so as to form a plurality of compression data flows; and the combination module is used for combining the plurality of compression data flows. The invention also provides a large-size image compression processing method. When the technical scheme of the invention is applied, the efficiency of carrying out compression processing on the large-size image is high, the cost is low, and the system is simple.

The invention provides a refrigerating system. The refrigerating system comprises a compressor (1), an evaporation device and a condensation device; the compressor comprises more than two compressioncavities and further comprises more than one switching compression cavity, more than one air supplement port and more than one air supplement branch (10), wherein the compression cavities are independent from each other, and the air supplement branches (10) are located outside the compressor; the air supplement ports can be connected to at least one of the air supplement branches (10); the air suction ends of the switching compression cavities are connected to the air supplement ports; and the exhaust ends of the switching compression cavities are connected to an exhaust port of the compressor. Compared with an original two-stage or quasi-two-stage air supplement enthalpy increasing system loop, the refrigerating system has the beneficial effects that a technology combining air supplemententhalpy increasing and parallel compression is adopted, air supplement enthalpy increasing can be realized by utilizing the air supplement branches, the mixing loss of air supplement can be effectively reduced, the backflow loss and the flowing resistance loss of air supplement can be reduced, and therefore the air supplement enthalpy increasing effect can be improved, the heating capacity of therefrigerating system at a low temperature can be improved, and the energy efficiency level of the system can be improved.

The invention discloses a control method and device of electronic expansion valves. The control method comprises the following steps that whether a compression system runs in a parallel compression mode or not is detected; under the condition that the compression system runs in the parallel compression mode, the condensation temperature, the condenser outlet temperature and the exhaust temperatureof an exhaust port are obtained; a condenser outlet supercooling degree target value is determined according to the exhaust temperature, the adjustment of the first electronic expansion valve is controlled according to a difference value between the condenser outlet supercooling degree and the condenser outlet supercooling degree target value, wherein the condenser outlet supercooling degree is adifference value between the condensation temperature and the condenser outlet temperature; and an exhaust temperature target value is determined, and the adjustment of the second electronic expansion valve is controlled according to a difference value between the exhaust temperature and the exhaust temperature target value. By means of the control method and device, the problems that in the related art, in the control process of a double-air-cylinder compression system, due to the fact that the two electronic expansion valves are difficult to decouple, the system operation is not stable in the adjusting process is solved.

The invention discloses a portable real-time collecting and processing device for a hyperspectral video, and a method thereof. The device comprises a data collecting module, a compression module, a transmission module, a control calculation module and a display module, wherein the data collecting module collects an RGB (Red, Green and Blue) video and a spectral video and transmits the data to the compression module; the compression module carries out parallel compression on multiple paths of video information and provides the compressed data for the transmission module; the transmission module transmits the data to the control calculation module and is used for the control calculation module to send an instruction to the data collecting module and the compression module; the control calculation module is used for sending the instruction to control the collecting module to collect a video and the compression module, and carrying out data decoding on the received video data to carry out real-time fusion and data analysis and processing; the display module carries out real-time display on the fused video. According to the device, the collection, the compression, the transmission and the processing analysis of RGB and the spectral video can be realized, the portable real-time collecting and processing device has the characteristics of device miniaturization and real-time data processing and is convenient in outdoor data collection.

The invention discloses a segmented and parallel compression method and a segmented and parallel compression system for a nonvolatile processor, and relates to the field of low-power-consumption processors. The method comprises the following steps: 1) determining the number of divided segments of a status bit of a segmented volatile memory unit of the nonvolatile processor; 2) compiling an offline/online hybrid algorithm, and performing compression simulation to each status bit segment by using an offline segment algorithm to obtain division of all segments with equal average compression time, average compression time and compression time standard difference of each segment; 3) designing the nonvolatile processor according to the number of the segments of the status bit and the length of each segment obtained through the offline segment algorithm; 4) connecting each status bit segment with a corresponding compression module in a parallel compression unit and performing dynamic load balancing to each status bit segment with greater compression time standard difference by using an online control algorithm to complete compression backup. The system comprises a volatile processing logic unit, the segmented volatile memory unit, the parallel compression unit and a segmented nonvolatile memory unit.