132 results about "Decompression operation" 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 system and method for managing a functional unit in a system using a data movement engine. An exemplary system may comprise a CPU coupled to a memory controller. The memory controller may include or couple to a data movement engine (DME). The memory controller may in turn couple to a system memory or other device which includes at least one functional unit. The DME may operate to transfer data to/from the system memory and/or the functional unit, as described herein. In one embodiment, the DME may also include multiple DME channels or multiple DME contexts. The DME may operate to direct the functional unit to perform operations on data in the system memory. For example, the DME may read source data from the system memory, the DME may then write the source data to the functional unit, the functional unit may operate on the data to produce modified data, the DME may then read the modified data from the functional unit, and the DME may then write the modified data to a destination in the system memory. Thus the DME may direct the functional unit to perform an operation on data in system memory using four data movement operations. The DME may also perform various other data movement operations in the computer system, e.g., data movement operations that are not involved with operation of the functional unit.

In various embodiments, a high-density solid-state storage unit includes a plurality of flash cards. Each flash card has a flash controller that incorporates one or more resources for facilitating compression and decompression operations. In one aspect, data reduction and data reconstruction operations can be performed in-line as data is stored to and retrieved from flash memory. In another aspect, data reduction and data reconstruction operations can be performed as a service. Any one of the plurality of flash cards can be used to provide data reduction or data reconstruction services on demand for any type of data, including system data, libraries, and firmware code.

In an ejector cycle system using carbon dioxide as refrigerant, an ejector decompresses and expands refrigerant from a radiator to suck gas refrigerant evaporated in an evaporator, and converts an expansion energy to a pressure energy to increase a refrigerant pressure to be sucked into a compressor. Because refrigerant is decompressed and expanded in a super-critical area, a pressure difference during the decompression operation becomes larger, and a specific enthalpy difference becomes larger. Accordingly, energy converting efficiency in the ejector becomes higher, and efficiency of the ejector cycle system is improved.

A cache memory controller in a computer system, such as a multicore processing system, provides compression for writes to memory, such as an off-chip memory, and decompression after reads from memory. Application accelerator processors in the system generate application data and requests to read/write the data from/to memory. The cache memory controller uses information relating location parameters of buffers allocated for application data and sets parameters to configure compression and decompression operations. The cache memory controller monitors memory addresses specified in read requests and write requests from/to the first memory. The requested memory address is compared to the location parameters for the allocated buffers to select the set of parameters for the particular application data. Compression or decompression is applied to the application data in accordance with the selected set of parameters. The data size of the data transferred to/from memory is reduced.

The invention discloses a treatment method for oil-containing sludge, which comprises: in extract dewater process, using multiple-effect or single-effect multiplestage extract evaporation system, wherein, in the latter, holding normal pressure in first stage and positive pressure in other stages; in the former, using normal pressure in all stages. Compared with prior art, this invention can decrease heat-exchange area and power consumption, and overcomes the problem from decompression operation in common multiple-effect multiplestage system.

The invention discloses a method of compressing an HTTP (hyper text transport protocol) -oriented TCP (transmission control protocol) header compression method in a 6LoWAPN (IPv-over low-power wireless personal area network). The compression and decompression operations of the TCP header are performed in all the HTTP-based communication processes in the network for saving load space, transmitting data of application layers, reducing fragmentation of data link layers and increasing communication efficiency. The method comprises the following steps: an application layer, a transmission layer and a network layer of a transmitting end complete the corresponding operations respectively, and formed IP data is delivered to an adaptation layer; the adaptation layer firstly completes compression of an IP header and an IP expansion header and then compresses the TCP header in the way of a header compression structure of Encoding and In-Line to ensure the compatibility of the compression method and the convenience in operation implementation; and formed 6LoWAPN data is delivered to a data link layer and data link frames are sent a receiving end through the data link layer and a physical layer. The receiving end decompresses the received data according to the reverse processing of the process mentioned above, and then an application layer receives HTTP data transmitted from the transmitting end.

A system and method for transparently compressing file system data using compression group descriptors is provided. When data contained within a compression group be compressed beyond a predefined threshold value, a compression group descriptor is included in the compression group that signifies that the data for the group of level 0 blocks is compressed into a lesser number of physical data blocks. When performing a read operation, the file system first determines the appropriate compression group that contains the desired data and determines whether the compression group has been compressed. If so, the file system decompresses the data in the compression group before returning the decompressed data. If the magic value is not the first pointer position, then the data within the compression group was previously stored in an uncompressed format, and the data may be returned without performing a decompression operation.

Without repeating compression/decompression operations, an editing process such as rotation can be executed using first compression data, and second compression data, whose compression ratio is increased, can be stored in a hard disk drive.

The invention provides a starting method and starting device for internal combustion engine to easily break down the top dead center of initial compression after the release of decompression operation, while avoiding the upsizing of an electric motor for starting. In an internal combustion engine having a decompression mechanism, a decompression cam rotatable, in relation to a camshaft in the angle Ad between a first and second stop positions, has a cam profile such that an exhaust valve is in an opening state at the first stop position and in a closing state at the second stop position. At engine start (position P1), the decompression cam is rotated in reverse to locate at the first stop position by reversely rotating a crankshaft with the electric motor, and after the crankshaft only is further rotated reversely (position P3), the decompression cam is rotated positively, by positively rotating the crankshaft with the motor. During the decompression cam reaches the second stop position, it makes the exhaust valve in the opening state to enlarge a crankshaft runup angle in either one of compression stroke (S8, S12) included in the range of reverse rotation angle Ar or an initial compression stroke, after starting the positive rotation of decompression cam.

Several methods and a system to implement data compression inline with an eight byte data path are disclosed. In one embodiment, a method includes acquiring a data from a host. In addition, the method includes applying an eight byte data path to the data. The method also includes compressing the data inline. The method may further include writing the data in a memory through a memory controller using a RAID engine. The method may also include manipulating the data through the RAID engine. In addition, the method may include reading the data through a Serial Attached SCSI (SAS) core. The method may further include writing the data to a non-volatile storage. The method may include applying a compression technique based on a data history. The method may also include maintaining a consistent order of a sequence of the data during a data compression operation and a decompression operation.

An exposure apparatus for exposing an object to be exposed by elastically deforming an exposing mask having a micro-opening pattern so as to bring the exposing mask into contact with the object includes a compression/decompression section for elastically deforming the exposing mask with compression/decompression so as to bring the exposing mask into contact with the object or into detachment from the object; and a controlling section for controlling the compression/decompression operation with the compression/decompression section. The controlling section controls the compression/decompression operation with the compression/decompression section based on control data prepared in advance.

The invention discloses a method for refining a dibasic acid dimethyl ester plasticizer, which comprises the following steps: dibasic acid dimethyl ester plasticizer crude product is refined by adopting a continuous decompression and rectification light-component and heavy-component removing method, after being filtered, the plasticizer crude product firstly enters a lightness-removing column, the lightness-removing column performs decompression operation to remove light components on the top of the lightness-removing column, the bottom materials of the lightness-removing column enter a weight-removing column to remove weight components, the weight-removing column performs decompression operation to remove monoester and little tar in the plasticizer crude product, and the top of the weight-removing column extracts the refined plasticizer produce. The plasticizer product has high purity, stable quality, lower energy consumption, simple operation and high product yield and reduces the generation of tar and environmental pollution.

The invention provides an efficient method for compressing a file for the file transmission of an instant communication system and a network storage system. The method is mainly characterized in that compressing and decompressing programs are embedded in user programs of file senders and file receivers of the instant communication system/the network storage system to ensure that the compression/decompression operation of the file is performed automatically and completely transparently by a user. By the method, the user of the instant communication system or the user of a network hard disk system can operate in the same way as that no compression technology is used, but the file transmission time of the instant communication system is greatly reduced and the file uploading and downloading of a network hard disk are greatly accelerated; furthermore, much network hard disk space can be saved.

Method, apparatus, and systems employing novel delayed dictionary update schemes for dictionary-based high-bandwidth lossless compression. A pair of dictionaries having entries that are synchronized and encoded to support compression and decompression operations are implemented via logic at a compressor and decompressor. The compressor/decompressor logic operatives in a cooperative manner, including implementing the same dictionary update schemes, resulting in the data in the respective dictionaries being synchronized. The dictionaries are also configured with replaceable entries, and replacement policies are implemented based on matching bytes of data within sets of data being transferred over the link. Various schemes are disclosed for entry replacement, as well as a delayed dictionary update technique. The techniques support line-speed compression and decompression using parallel operations resulting in substantially no latency overhead.

The invention relates to a remote blood pressure measuring system and an implementation method thereof. The system comprises a blood pressure measuring device, a monitoring platform server and a user terminal. The blood pressure measuring device is used for obtaining the actual pulse parameters of a testee and sending the actual pulse parameters to the monitoring platform server and used for receiving a control instruction to carry out preset pressurization and decompression operation on the testee. The monitoring platform server is used for receiving and storing the actual pulse parameters, calculating the average blood pressure value, the blood pressure fluctuation quantity and the heart rate fluctuation quantity through a statistic model, giving an alarm message to the user terminal when the average blood pressure value is larger than a blood pressure threshold value if the blood pressure fluctuation quantity or the heart rate fluctuation quantity is larger than a corresponding fluctuation threshold value, obtaining a control instruction returned back by the user terminal and forwarding the control instruction. By the adoption of the remote blood pressure measuring system and the implementation method thereof, the actual pulse parameters of the testee can be easily measured, the testee can conveniently know the blood pressure and heart rate unusual conditions, and the blood pressure of the testee can be effectively decreased.