181 results about "Compression time" patented technology

A packet telephone system which employs a packet network that provides virtual circuits. The packet telephone system employs short packets containing compressed speech. The use of the short packets makes possible compression and decompression times and bounded delays in the virtual circuits which are together short enough to permit toll-quality telephone service. The packet telephone system employs an intelligent network interface unit to interface between the packet network and standard telephone devices. The network interface unit does the speech compression and decompression and also responds to control packets from the packet network. Consequently, many telephone system features can be implemented in the network interface unit instead of in the switches. The network interface unit may also be used to provide data connections to devices attached to it. The combination of virtual circuits, with bounded delays, short packets, rapid compression and decompression, and intelligent network interface units makes it possible to build a telephone system with fewer and cheaper switches and fewer links for a given volume of traffic than heretofore possible and also permits substantial savings in provisioning and maintaining the system.

The invention provides a manufacture process of disposable bowl cover with high strength, strong stability and good water proof performance. The process includes the concrete steps of raw material beating-batching-compression molding-side shearing and punching-making back-off slot by pressing; wherein the material beating includes that: the used raw material is mainly bagasse paddle board accounting for 80-90% of total mass and supported by a small amount of wood pulp and bamboo pulp accounting for 10-20%, water dissociation beating is carried out by a beating engine, and the beating concentration is 4-6%; the compression molding includes: wet blank with water content of 65-75% is directly transferred into an aluminium or steel compression molding mold for high temperature high pressure dehydration, so that the water content of product can reach 5-7%, and the pressure thereof is 15-20x10<3>kgf, the temperature is 150+/-10 DEG C, and the compression time is 45+/-5 seconds. Compared withthe existing molded pulp process, the invention saves energy consumption; and the water proof performance, the strength and the stability of the product are greatly improved.

The invention discloses a public transport priority control method and device, and the method comprises the steps: obtaining a priority request of a bus; carrying out the green-light prolonging operation for a priority phase according to the green-light prolonging time of the priority phase, the rear offset time of a coordination phase and phase compression time of a compensation phase when the green-light prolonging time of the priority phase is greater than zero if the phase state of the priority phase is a green-light state; and carrying out the red-light early breaking operation for the priority phase according to the front offset time of the coordination phase when the red-light time of the priority phase is determined to meet an early breaking condition if the phase state of the priority phase is a red-light state. Because the front and rear offset time of the coordination phase is considered during the execution of the green-light prolonging operation or the red-light early breaking operation, the method can improve the public transport priority level on the basis that a green wave effect is not affected. Meanwhile, the method reduces the loss of non-priority phase time through the time compensation of the priority phase, and can effectively reduce the impact on the passing of social vehicles from the public transport priority control.

Featured is a web sealing device for controlling the sealing pressure so as to carry out a sufficient sealing while monitoring the sealing pressure directly acting on the web. Also featured is a packaging container producing equipment using the aforementioned sealing device and a packaging container producing method using the same. When sealing a part of web W by engaging hooks 16a, 16b, which directly give a sealing pressure to the web W in order to seal a part of both web N by heating and melting both side surfaces of a double web while pressing the same, the strain amount of the hooks 16a, 16b is measured by a strain gauge 23. and the aforementioned sealing pressure is controlled by the controller 21 so that the waveform of the data, in which the values obtained by converting the aforementioned measured strain amount to pressure are continuously recorded in line with the elapse of time, becomes nearly identical to that of the master data, reflecting on the compressing time by the hooks 16a, 16b, compression timing, and the pressing force of the cylinder 18 for actuation of the hooks, and the adjustment of the drive amount of the drive device for the cross sealing of a pair of sealing jaws 7a, 7b.

A system, method and computer program product for automatic selection of encoding parameters for transmission of media objects is provided. The method and computer program product involve the automatic selection of media encoding parameters based on editorial and technical contexts. Such contexts include time constraints, duration, size, quality, processing time and compression time. The media objects are then automatically encoded using these automatically selected parameters, and then transmitted from a remote site to one or more additional sites via a communications network.

This invention provides methods for reducing the bit width of soft information, while maintaining a large dynamic range by applying compression and expansion. In particular, this invention provides methods for time de-interleaving of soft information, comprising the steps of: quantizing the soft information into a first soft information having a first pre-defined number of bits; compressing the first soft information into a second soft information having a second pre-defined number of bits; time de-interleaving the second soft information; and decompressing the time de-interleaved second soft information.

The invention discloses a method for manufacturing modified plywood formwork of wood or bamboo wood. The method is implemented by the following steps: small-diameter cotton-wood, China fir or small-diameter mixed bamboo instead of large-diameter high-quality wood and large-diameter moso bamboo are taken as raw materials to process into wood wool and bamboo filaments; soluble phenolic resin with a solid content of 20 to 30 percent is used as a modifier of the material; the phenolic resin is impregnated in the fiber cell lumens of the material by a pressure impregnation method to change the moisture expansion property of the material; the wood wool or the bamboo filaments containing less than or equal to 15 percent of water is used as assembly materials; modified and dried wood wool or bamboo filaments and paper impregnated with phenolic resin are used as assembly materials for plywood, and an assembly structure is a three-layer composite structure; main parameters of thermo-compression and bonding include: a unit pressure of 40 to 50 kg/cm<2>, a bonding temperature of 150 +/-10 DEG C, thermo-compression time of one minute for each millimeter of the thickness of board; the board is unloaded when cooled to less than or equal to 50 DEG C after thermo-compression and bonding and is subjected to edge cutting to be processed to the plywood; and after the worn surface finish of the plywood is restored through recoating by a secondary veneering method, the plywood is reused.

A method for compressing measurement data that includes grouping common data elements in common data messages. Sequential data elements in the groups are subtracted from each other to provide difference values. The difference values are compressed using a suitable compression algorithm to provide compressed blocks of data. Time stamp periods associated with each common data message are also subtracted from each other to provide time stamp difference values. The time stamp difference values are also compressed to provide compressed time stamp blocks. The compressed blocks of data and time stamp blocks are then stored.

The invention provides a simple to use site planning tool suitable useful in the field and capable of supporting site feasibility decision-making. Several advantages include cost savings owing to a) the expense of the tool itself (as compared with current CAD drawn site plans) and b) the compressed time-line to a decision-point regarding any site under consideration. More specifically, the invention provides a lightweight and intuitive design tool which requires no training to use, and permits a user to draw, to scale, property boundary lines within a browser interface and with or without an Internet connection. The invention further provides that a user may perform other rapid and scaled visualization concerning possible site plans, and to save site plans into a graphic file suitable for transmission and/or printing.

The invention provides a lossless encoding and decoding method of a Bayer image. The method comprises a lossless encoding process and a lossless decoding process of the Bayer image; the encoding process comprises: selecting the Bayer image, performing block division on a single image, predicting each block, performing entropy encoding on a prediction residual and a prediction mode obtained on the basis of the block, and finally obtaining a code stream of each block; and the decoding process comprises: performing entropy decoding on the code stream of each block to obtain the prediction residual of each pixel, performing reverse prediction according to the prediction mode used in the encoding process, and reconstructing the pixel value of each block to obtain the original Bayer image. By adoption of the method, the memory cost of a front end processing chip in a camera is saved, the design and manufacturing costs of the chip are also reduced, and the compression time is shortened while a high compression ratio is guaranteed. The experimental results show that the compression ratio of the method can reach 1:1.9 on average, and the complexity is low.

The invention relates to a wavelet domain seismic data real-time compression and high-precision reconstruction method based on compressed sensing. The wavelet domain seismic data real-time compression and high-precision reconstruction method comprises the steps of: firstly, carrying out sparse representation on a microseismic signal in a wavelet domain; secondly, constructing a chaos Bernoulli measurement matrix (CBMM) by utilizing a Logistic chaotic sequence, and performing compressed observation on the sparsely-represented microseismic signal by using the chaos Bernoulli measurement matrix; and finally, adopting a Bayesian wavelet tree structure tree structure reconstruction method (BTSWCS), and recovering complete original data. Actual contrast experimental results show that the compression time can be shortened to 10<-5> s by using the wavelet domain seismic data real-time compression and high-precision reconstruction method for compressing data with total sampling points being 2<8>, that is, if a sampling rate of a seismometer is 1 KSPS, the CBMM measurement matrix can realize real-time compression on the acquired 0.25 s data basically. The wavelet domain seismic data real-time compression and high-precision reconstruction method increases a PSNR value by at least 5 dB, significantly improves the peak signal to noise ratio when compared with the greedy algorithm, and reduces reconstruction errors.

The present invention provides an adaptive compression method and system for a distributed file system, and relates to the field of distributed system file compression. The method comprises the steps of: setting a compressed file format, and forming a compressed data stream, wherein the compressed data stream consists of head information and a plurality of data blocks, and the head information is used for determining whether the compressed data stream is compressed; receiving a to-be-compressed file, and compressing the to-be-compressed file according to the compressed file format so as to generate the compressed data stream; and setting an index file, wherein the index file consists of a plurality of records, and each record maintains data information of data in the compressed data stream, and the index file is used for rapidly positioning the compressed data stream. The method and system provided by the present invention are capable of improving compression efficiency and saving compression time.

The invention discloses a method and a device for compressing industrial real-time data, which are applied to an industrial control system. The method comprises the following steps of determining a current data point to be stored in the industrial control system, and acquiring a latest stored data point in stored data points in the industrial control system for serving as a target data point; determining a compression time tag of the current data point according to a target time tag in the target data point and a current time tag in the current data point; determining the compression quality code of the current data point according to a target quality code in the target data point and a current quality code in the current data point; determining a compression floating point value in the current data point according to a target floating point value in the target data point and a current floating point value in the current data point; and integrating the compression time tag, the compression quality code and the compression floating point value to obtain a compression data point of the current data point.

The invention discloses a time-space video compressed sensing method based on a convolutional network, and mainly aims at solving the problems that in the prior art, the video compression time-space balance and the video reconstruction real-time performance are poor. The scheme of the method comprises the steps that a training data set is prepared; a network structure of a time-space video compressed sensing method is designed; training and testing files are written according to the designed network structure; a network of the time-space video compressed sensing method is trained; and the network of the time-space video compressed sensing method is tested. The network of the time-space video compressed sensing method adopts an observation technology of simultaneous time-space compression are conducted simultaneously and a reconstruction technology of using 'time-space blocks' to enhance the time-space correlation, not only can real-time video reconstruction be achieved, but also the reconstruction result has the high time-space balance, the reconstruction quality is high and stable, and the network can be used for compressed transmission of a video and follow-up video reconstruction.

In a belt tensioner, a cylinder is mounted to a side of a stationary member positioned in an upper side. A plunger is mounted to a side of a pulley positioned in a lower side. An outer tube sectioning an oil reservoir forming a gas chamber in an upper portion is provided in an outer periphery of the plunger and the cylinder. A first oil passage communicating the gas chamber with a high pressure oil chamber is provided in an upper portion of the cylinder. A second oil passage communicating the high pressure oil chamber with the oil reservoir is provided in the plunger. An orifice hole is provided in the first oil passage. A first check valve closing at an expansion time is provided in the first oil passage, and a second check valve closing at a compression time is provided in the second oil passage.