106results about How to "Improve compression efficiency" patented technology

A “Remote Display Generator,” as described herein, provides various techniques for providing high-fidelity displays with highly responsive interactive application experiences to clients across a wide range of network bandwidths for remotely hosted applications. In general, the Remote Display Generator uses a compression-friendly remote display architecture as a core. With this compression architecture, actual screen data from a remote server is read out from the display buffer frame by frame, and then compressed with a unified screen codec. Other technologies, including timer-driven screen update models and adaptive transmission mechanisms, are then integrated with various embodiments of the Remote Display Generator to improve overall user experience by improving display quality and responsiveness to user interaction with remotely hosted applications.

Apparatus and methods are described for network content in dictionary-based (de)compression. Content for compression is parsed into discrete constructions, such as phrases, words, etc. The discrete constructions are passed to a searching engine to locate network information at one or more network locator identities, such as URI's (URL's, URNs) that correspond to the discrete constructions. Upon locating the network information, a dictionary of entries corresponding to the content is created. The content is encoded from the dictionary by indicating raw or relative offsets into the network information per each of the network locator identities. Decoding occurs anti-symmetrically to the encoding. In this manner, the vastness of network content, e.g., the world wide web, is leveraged to provide relevant dictionaries for de-/encoding. Searching for candidate dictionaries, scoring same and safeguarding against volatile dictionary content are other noteworthy features. Computer program products and computing network interaction are also defined.

Provided are a method and apparatus for encoding and decoding an image. In the encoding method, a residual block of a current block is transformed using a predicted block of the current block so as to increase the spatial correlation among residual values, and DCT is performed on the transformed residual block, thus improving the efficiency of transforming a block having a region that is difficult to precisely predict.

A voice coding apparatus and method of a mobile communications terminal can embody higher compressibility and ensure high sound quality, compared with the case of using a Linear Prediction (LP) coefficient, by performing a Linear Predictive Coding (LPC) using a Perceptual Linear Prediction (PLP) coefficient.

A grating structure by high dispersion volume holography that applies, for example, to pulse compression or stretching devices. The grating structure includes a transmission volume holographic grating produced on a reflective support. The grating includes strata inclined to the plane of the support, the angle of inclination of the strata defined with respect to the normal to the support and the pitch of the strata being chosen such that a light beam of a predetermined mean wavelength, incident on the structure with a predetermined angle of incidence, undergoes a first passage through the grating, is reflected by the reflective support, undergoes a second passage through the grating, and is only diffracted by the grating during one of the first and second passages.

The present invention is about an image encoding/decoding method and apparatus. According to present invention, a method of decoding an image, the method comprising, loading information of a neighboring block of a current block; decoding a current block using the loaded information of the neighboring block; and saving information of the current block that is decoded.

The invention discloses a method and a device for compression and decompression of vector map data. The compression method includes reading the vector map data to be compressed; converting the longitude and latitude coordinate of each position in the vector map data to be compressed into a reference coordinate in a coordinate system; calculating relative offset of the reference coordinates of adjacent positions in the vector map data; obtaining the number of storage space sites occupied by the maximal relative offset in all calculated relative offset; and storing all the calculated relative offset according to the number of storage space sites in compression data of the vector map data, and storing the reference coordinate of the first position in the vector map data to be compressed. Compared with the prior, the method is not limited by grids divided by space, the coordinate, in the whole map coordinate system, of an origin of the coordinate system in each grid does not need to be recorded, compression data are not limited, and high compression efficiency is obtained.

An embodiment of the invention provides a method and a device for decoding based on intra prediction. The method includes: acquiring one or more segmentation marks, a segmentation shape mark and a segmentation direction mark for a current prediction unit from a compressed code flow of video images; finally segmenting the current prediction unit into a plurality of square transformation units or a plurality of rectangular transformation units according to the acquired one or more segmentation marks, the segmentation shape mark and the segmentation direction mark; and subjecting each square transformation unit in the multiple square transformation units obtained in final segmentation or each rectangular transformation unit in the multiple rectangular transformation units obtained in final segmentation to decoding procedures. According to the method and the device for decoding based on intra prediction, video image compression efficiency can be improved by segmenting the same prediction unit into the square transformation units or rectangular transformation units.

The present invention relates to a compressor, in particular to a scroll compressor with a lubricating system, an oil channel is arranged on a movable swirl part, and the end oil hole of the oil channel is communicated with a socket to feed lubricant to a cross ring-shaped moving part in the socket. The present invention improves the lubricating system of the scroll compressor, so that the lubricant can be fed into a chamber formed by a fixed swirl part and the movable swirl part via a specific channel, and the oil hole can be periodically opened in order to accurately control the flow of the lubricant into the chamber, so that the chamber can be better lubricated. Thereby, the scroll compressor can be better lubricated in the process of operation, and meanwhile, the quantity of the lubricant fed into the chamber can be accurately controlled in order to ensure the stability of operation and obtain higher compressing efficiency.

The invention discloses an image processing method and device. The method comprises steps of receiving data sent by a sending end, and determining a wavelet coefficient according to the received data, wherein the data sent by the sending end comprises a wavelet coefficient obtained through wavelet decomposition performed on an original image; according to the wavelet coefficient, generating a low-resolution image; and according to a neural network, carrying out ultra-resolution reconstruction on the low-resolution image so as to obtain a high-resolution image. According to the invention, a technical problem of a failure to meet quite high compression efficiency and quite high image restoration quality in an image compression method in the prior art is solved.

The utility model provides a calculation method of block size of cylindrical panoramic video coding and a transmission method, which is characterized in that: a code rate of the panoramic video coding is got without direct blocking pre-coding to the cylindrical panoramic video; blocking pre-coding to the video is operated according to an optional block size, and the code rate in the block size is got; the increment of the two code rate is computed; the impact factor of the video is computed based on the increment; and the optimal coding block size is computed based on the impact factor. The utility model also provides a transmission method of the cylindrical panoramic video block coding based on the block size computed by the calculation method. The utility model has the advantages of computing the optimal coding block size by twice pre-coding, and having lowest transmission data size in the same visual quality of users by using the optimal block size to code the cylindrical panoramic video.

The motion estimating and measuring method and device in video compression system may adopts cost function unlike that in available technology in calculating one optimal motion vector of the current coded block. The cost function the present invention adopts has not only the traditional 'absolute difference sum' considered, but also the quantizing step length and the pixel difference value variation state of the current coded block relative to the blocks in one search arean of the destination picture considered, so that the cost function the present invention can find out the optimal motion vector corresponding to residual value capable of being treated to obtain relative high compression efficiency.

The invention discloses a dust barrel with a double dust compressing function, comprising compression cavities and a bottom cover, wherein the center of the bottom cover is provided with a driven gear wheel and a connecting head, a partition plate is arranged in the dust barrel and used for dividing the dust barrel into an upper-layer compression cavity and a lower-layer compression cavity, an upper movable compression plate and an upper fixed compression plate are arranged in the upper-layer compression cavity, the upper movable compression plate is rotatablely fixed on the upper partition plate, and the upper fixed compression plate is fixedly connected with the upper partition plate; a lower movable compression plate and a lower fixed compression plate are arranged in the lower-layer compression cavity, the upper end of a rotating shaft of the lower movable compression plate is fixedly connected with a rotating shaft of the upper movable compression plate, the lower end of the rotating shaft is engaged with the connecting head, and the lower fixed compression plate is fixedly connected with the partition plate. The dust barrel realizes twice compression of dust and improves compression efficiency.

The invention discloses an axially symmetrical variable geometry bimodal air inlet channel adaptive to broad Mach number flight. The bimodal air inlet channel comprises a movable center cone, a flow deflector, a fairing and an actuation regulating system. In the working process of the air inlet channel, the actuation system drives the movable center cone and the fairing to translate front and backindependently along with variation of the Mach number of an incoming flow, the flow deflector is separated from the movable center cone at a low Mach working point, accordingly two air inlet passagesare formed, a throat channel area is widened, and the effect of increasing a flow coefficient in low Mach flight can be achieved; the movable center cone is seamlessly combined with the flow deflector in high Mach flight, a working mode of the air inlet channel turns to a one-channel working mode, at the moment, the throat channel area of the air inlet channel is shrunk, the internal compressionratio is increased, and the air compression requirement when the air inlet channel works at high Mach can be met while the flow requirement in high Mach flight is met.

The sealed rotary compressor includes the following parts: cylinder assembly; rotating shaft installed to penetrate the cylinder assembly and to form eccentric part; rotating piston moving together with the eccentric part of the rotating shaft and capable of rotating and revolving inside the sealed space; and several vanes with one end contacting with the rotating piston, inserted into the cylinder body to reciprocate linearly in radius direction, and separating the sealed space to compress the refrigerant sucked via the sucking holes and exhaust via the exhaust holes. Each turn of the rotating shaft can realize several strokes and this raises the compression efficiency. The sucking force and the exhaust force produced with the compression of the refrigerant are symmetrical about the cylinder axle, and this can prevent vibration of the compressor caused by unbalance.

A centrifugal compressor is equipped with a resin housing, that is made in a manner such that compression efficiency is not lost and merits such as weight and cost reduction are not cancelled out. The turbo charger housing comprises a volute section, a channel formation section, and an impeller that is fixed in the center of the channel formation section to a rotating shaft. An annular shroud is disposed in a recess formed on the inner wall of the channel formation section. The annular shroud forms the outer walls of a channel and a diffuser for compressed gas. The edge of the annular shroud spaced from a partition wall, which forms a portion of a bearing housing. If the resin housing undergoes thermal deformation, the dimensions of a gap between the annular shroud and the curved profile of a blade is maintained.

A video decoding method performed by a decoding apparatus according to the present disclosure includes deriving one of a plurality of cross-component linear model (CCLM) prediction mode as a CCLM prediction mode of the current chroma block, deriving a sample number of neighboring chroma samples of the current chroma block based on the CCLM prediction mode of the current chroma block, a size of the current chroma block, and a specific value; deriving the neighboring chroma samples of the sample number, calculating CCLM parameters based on the neighboring chroma samples and the down sampled neighboring luma samples, deriving prediction samples for the current chroma block based on the CCLM parameters and the down sampled luma samples and generating reconstructed samples for the current chroma block based on the prediction samples, wherein the specific value is derived as 2.

The invention relates to a compressor, in particular to a centrifugal compressor. The centrifugal compressor is mainly applicable to compression of steam and comprises a volute (3) connected with a steam inlet pipe (1) and a steam outlet pipe (2), an impeller (10) and a motor (5). The impeller (10) is arranged in the volute (3), and a power output end of the motor (5) is connected with the impeller (10). The centrifugal compressor is further provided with a water spraying pipe (9) comprising a sprayer (901), the water spraying pipe (9) is arranged on the steam inlet pipe (1), or the water spraying pipe (9) is arranged on the volute (3), and the water spraying pipe (901) faces an inner cavity of the volute (3). By means of the technical scheme, the compression efficiency is high, compression cost is low, performance is stable, reliability is good, and service life is long. The centrifugal compressor achieves automatic control of the pressure and temperature.

The present invention discloses a panoramic video coding method and device. The method comprises the following steps: step 1, sampling panoramic videos; step 2, coding the sampled videos by using a video compression coding method to obtain an image in a video sequence; step 3, correspondingly decoding the coded image to obtain a reconstructed image; step 4, entering a step 5 if the obtained reconstructed image can be referenced by subsequent images, and otherwise, entering a step 6; step 5, implementing boundary expansion on the reconstructed image according to an adjacent relation of the panoramic videos; and step 6, finishing operations if all images in the video sequence have been coded, and otherwise, returning to the step 2. By adopting the panoramic video coding method and device disclosed by the invention, the accuracy degree of inter-frame prediction at boundaries can be improved, and thus the compression efficiency can be increased.

A twin rotary compressor is provided. In the twin rotary compressor, a refrigerant suction pipe may be connected to a middle plate positioned between a first cylinder and a second cylinder to reduce a height of the first cylinder, so that heights of a first rolling piston and a first vane may also be lowered. This may allow a contact area between the first rolling piston and the first vane to be decreased so as to reduce refrigerant leakage from a first compression space of the first cylinder, resulting in improvement of compression efficiency of the compressor.

The invention belongs to the technical field of image processing, and provides a data compression method and device for composite images. The method includes the steps that edge blur of the composite images is recovered, and each composite image comprises symbols, lines and a static background; a plurality of difference images corresponding to the composite images adjacent in time are obtained one by one, and each difference image comprises symbols and lines; the difference images are processed through run coding to obtain pixel data and length data; the pixel data and the length data are encoded by adopting dictionary coding and entropy coding respectively to obtain coded data streams. Under the condition of small channel capacity for data transmission, the compression efficiency of the images is improved, and image distortion is reduced.

Disclosed is a method for encoding a video signal through discrete cosine transform (DCT) and motion estimation (ME) and an apparatus therefor. The method for encoding the video signal simplifies the ME with reference to DCT coefficients. In a method for estimating motion in a video frame compression system using DCT, flatness degrees of the blocks is determined according to the number of DCT coefficients having a non-zero value among DCT coefficients transformed in units of blocks. A reference frame is formed by recovering video frame data from some or all of the DCT coefficients corresponding to the flatness degrees of the blocks. Precision of motion estimation (ME) for a current macro block (MB) of a current video frame is dynamically changed corresponding to the flatness degree of the reference frame.

A valve assembly of a hermetic reciprocating compressor. It includes a valve plate provided between a cylinder block and a cylinder head, a reed valve for opening/closing a refrigerant discharge hole formed on the valve plate, and a first stopper for resisting bending deformation of the reed valve. Force, the second stopper, used to resist the bending deformation force of the first stopper, and the positioning piece used to limit the bending degree of the second stopper, and cooperate with the positioning piece to be used for being bent by the reed valve Bolts to which the stoppers are attached. When the refrigerant discharge pressure increases, the resistance against the bending force is applied alternately by the first stopper and the second stopper, thereby increasing the compression efficiency by changing the opening degree of the reed valve corresponding to the pressure change, and at the same time Noise can be reduced by dampening the vibrations applied to the reed valve. When the discharge pressure of the refrigerant increases abnormally, the degree of deformation of the second stopper restricted by the positioning member is controlled by the bolt.

The present invention relates to vortex compressor, and is especially floating sealer for vortex compressor. The floating sealer includes one static eddy tray with boss in the top, and one sealing cover fitting the top of the static eddy tray. The sealing cover has one notch to fit the boss to form one medium pressure cavity between the sealing cover and the static eddy tray, and the medium pressure cavity is communicated with one discharge channel and one compression cavity in the static eddy tray. The floating sealer includes also three sealing parts. Compared with available technology, the floating sealer of present invention has the advantages of simple structure, easy installation and low cost. The vortex compressor of the present invention has high compression efficiency, low cost and high reliability.

A method for encoding an image using an intra-screen prediction comprises a step of selecting, from a plurality of gradient candidates, a gradient of pixel values indicated by an image signal to be predicted. Based on the gradient, a gradient is given according to the distance from a predicted reference pixel to generate a prediction signal. Based on the prediction signal, intra-screen encoding is performed on the image signal to be predicted and the information indicating the magnitude of the selected gradient is encoded. Alternatively, based on the already encoded image signal, a gradient of the pixel values indicated by the image signal to be predicted is estimated. Based on this gradient, a gradient is then given according to the distance from the predicted reference pixel to generate a prediction signal and based on this prediction signal, intra-screen encoding is performed on the image signal to be predicted.

The invention discloses a high-efficiency garbage compression device, which comprises a shell, and the bottom of the shell is provided with a lower supporting frame, the lower supporting frame is a T-shaped bracket, and rollers are respectively fixed on both ends of the top of the lower supporting frame, and the lower supporting frame is The two ends of the support frame are respectively provided with rollers, the rollers are set on the rollers, and the drive motor connected to the rollers is arranged on the outer side of the housing corresponding to the rollers; the lower conveyor belt is set between the two rollers, and the An upper supporting frame is arranged above the lower conveyor belt, the upper supporting frame is an inverted T-shaped bracket, and a fixed frame is arranged above the upper supporting frame; vertical guide rails are fixedly arranged at the bottom of the fixed frame. The garbage compression device has a novel structure; the invention ingeniously sets the compression mechanism to compress during the transmission process, and the compression efficiency is high; and the compression time is long, the garbage is hard to rebound after being compressed and shaped, and the solid and liquid are separated after compression; at the same time, sterilization is carried out during the compression process to ensure hygiene .

The invention discloses a gateway traffic compressing method, a device and a network service supply system to be used for optimizing traffic compressing of gateway agency. The gateway traffic compressing method includes the steps of judging whether a received terminal request contains a compressing support field or not by a gateway and obtaining a judgment result, inquiring a preset terminal compressing ability memory unit by the gateway when the judgment result is that the terminal request does not contain the compressing support field and obtaining a first query result, obtaining a compressed encoding mode supported by a terminal in the preset terminal compressing ability memory unit by the gateway when the first query result is terminal supporting compressing, compressing return content corresponding to the terminal request and returning to the terminal by using a compressed encoding algorithm supporting the compressed encoding mode by the gateway. The gateway traffic compressing method, the device and the network service supply system has the advantages of fully developing processing capacity of a client-side according to the actual processing capacity of the client-side and improving compressing efficiency of network traffic.

The invention discloses a self-pressurized device with a high pressure chamber and a low pressure chamber of a closed air loop air suspension system and relates to closed air channel air suspension systems with self-pressurized mechanisms. The self-pressurized device with the high pressure chamber and the low pressure chamber of the closed air loop air suspension system comprises a solenoid valve (a), a one-way valve (a), a one-way valve (b), a piston, a piston rod, a one-way valve (c), a one-way valve (d), an air pump, a two-position three-way solenoid valve, the high pressure chamber and the low pressure chamber. The inner structure of the low pressure chamber is a cylindrical cavity, two end surfaces of the low pressure chamber are respectively provided with an air inlet and an air outlet, the piston is arranged in the middle of the cavity, and the low pressure chamber is separated into an upper working cavity and a lower working cavity. An air spring receives air from the high pressure chamber for being inflated as needed, the air is discharged into the low pressure chamber through the one-way valves when the air needs to be discharged, and the air discharged from the air spring is pressurized in an up and down vibration stroke of the low pressure chamber which is externally driven by a suspension and then is inflated into the high pressure chamber to form a closed air loop. The self-pressurized device with the high pressure chamber and the low pressure chamber of the closed air loop air suspension system can effectively recover and recycle the air energy discharged from the air spring to achieve the purpose of energy saving of the air suspension system.

The invention discloses a multi-model compressing method for transmitting general aircraft longitude and latitude position data by beidou equipment, which comprises the following steps: step 1, confirming precision of the longitudinal and latitude position data according to practical situation and truncating the data; step 2, performing predicative encoding on the data being subjected to truncation in the step 1 based on one or more than one resumptive model; step 3, performing Huffman encoding on a plurality of predicative encoding data obtained in the step 2; step 4, generating compressed data heads and compressed data volumes based on a plurality of predicative encodings obtained in the step 3 and selecting one compressed data head and one compressed data volume with minimum byte count; and step 5, uncompressing the data. According to the invention, the predicative encoding based on different models is adopted to further improve the compressing efficiency and realize precise monitoring for an aircraft.

The invention provides a three-dimensional grid sequence compression method based on human body template alignment, which belongs to the technical field of data compression, and specifically comprisesthe following steps: collecting dynamic data; acquiring three-dimensional skeleton points; preparING a parameterized template: aligning actions of the parameterized template; aligning the shapes of the parameterized templates; constructing a parameterized template grid sequence; geometrically compressing the grid sequence; and carrying out grid sequence texture compression. Model compression based on template mapping has good compression efficiency and compression quality, the storage space of a three-dimensional video with a free viewing angle is reduced, the method can be more widely applied to mobile equipment and other portable equipment, the data volume is reduced, so that the method is more suitable for mobile data transmission, and the transmission efficiency is further improved.