440results about How to "Low transfer rate" patented technology

Systems and methods for dynamically controlling bandwidth of connections are described. In some embodiments, a proxy for one or more connections may allocate, distribute, or generate indications of network congestion via one or more connections in order to induce the senders of the connections to reduce their rates of transmission. The proxy may allocate, distribute, or generate these indications in such a way as to provide quality of service to one or more connections, or to ensure that a number of connections transmit within an accepted bandwidth limit. In other embodiments, a sender of a transport layer connection may have a method for determining a response to congestion indications which accounts for a priority of the connection. In these embodiments, a sender may reduce or increase parameters related to transmission rate at different rates according to a priority of the connection.

Improved data transport and management within a network communication system may be achieved by utilizing a transmit timer incorporated within the sender device and exploiting host-level statistics for a plurality of connections between a sender and receiver. The period of the transmit timer may be periodically adjusted based on a ratio of the smoothed round-trip time and the smoothed congestion window, thereby reducing or eliminating bursty data transmission commonly associated with conventional TCP architectures. For applications having a plurality of connections between a sender and a receiver that share a common channel, such as web applications, the congestion window and smoothed round trip time estimates for all active connections may be used to initialize new connections and allocate bandwidth among existing connections. This aspect of the present invention may reduce the destructive interference that may occur as different connections compete with one another to maximize the bandwidth of each connection without regard to other connections serving the same application. Error recovery may also be improved by incorporating a short timer and a long timer that are configured to reduce the size of the congestion window and the corresponding transmission rate in response to a second packet loss with a predefined time period in order to increase resilience to random packet loss.

Computer-based methods and apparatuses, including computer program products, are described for detecting and limiting focused server overload in a network. A feedback message is received from a downstream server, wherein the feedback message includes a communication protocol statistic. The methods and apparatuses determine which of one or more counters that store a number of feedback messages received that include the statistic, from an array of counters, are associated with the downstream server using one or more hash functions based on information included in the feedback message. The one or more counters are incremented in response to the feedback message including the statistic. Using the one or more hash functions, a value of the number stored in the one or more counters is determined. The value is determined to be indicative of an overload episode in the network for the downstream server based on whether the value satisfies a predetermined criteria.

The present invention provides for a method of congestion control for multicast transmission that is entirely managed at the source of the transmission. The various types of filters as well as round trip time estimators (130) that are used in the invention to determine when the rate of the multicast transmission should be reduced to alleviate congestion. The source of the transmission adjusts the rate of transmission based on loss indications that the receivers would otherwise transmit.

A network system (10). The system comprises a first network node (N6), and the node comprises an input (30IN) for receiving packets. During operation, the first network node operates as a downstream node when receiving packets at the input from an upstream node (N5). The node also comprises a buffer (30), coupled to the input and for storing received packets, and circuitry (32) for detecting when a number of packets stored in the buffer exceeds a buffer storage threshold. The node also comprises circuitry (32), responsive to a detection by the circuitry for detecting that the number of packets stored in the buffer exceeds the buffer storage threshold, for issuing a message to the upstream node. The message selectively commands the upstream node to reduce a rate of transmission of packets from the upstream node to the downstream node to a non-zero rate.

A barrier film composition can comprise a thermoplastic web comprising a thermoplastic polymer and a dispersed cyclodextrin composition having substituents that compatibilize the cyclodextrin in the film. The thermoplastic / cyclodextrin film obtains substantial barrier properties from the interaction between the substituted cyclodextrin in the film material with a permeant. The substituents on the cyclodextrin molecule causes the cyclodextrin to be dispersible and stable in the film material resulting in an extrudable thermoplastic. Such materials can be used as a single layer film material, a multilayer film material which can be coated or uncoated and can be used in structural materials wherein the thermoplastic is of substantial thickness resulting in structural stiffness. The cooperation between the cyclodextrin and the thermoplastic polymer provides barrier properties to a web wherein a permeant can be complexed or entrapped by the cyclodextrin compound and held within the film preventing the permeant from passing through the film into the interior of a film, an enclosure or container. The permeant can comprise a variety of well known materials such as moisture, aliphatic or aromatic hydrocarbons, monomer materials, off flavors, toxic compounds etc.

A transcranial magnetic stimulation induction coil device (“TMS coil device”) is manufactured to contain coil windings of a predetermined size and shape and fixedly positioned at a predetermined location within and orientation in relation to a casing of the TMS coil device. In one embodiment, the coil windings are encased in a casting at a predetermined location within and orientation in relation to the casting, and the casting is fixedly positioned at a predetermined location within and orientation in relation to the casing. The size and shape of the coil windings and the casing within, and the location and orientation of the coil windings in relation to each other and the casing of, the TMS coil device are known with a high level of precision, such that navigated brain stimulation can be performed with the TMS coil device with a high degree of accuracy. In another embodiment, the TMS coil device defines a space interposed between the coil windings and the casing and containing a gas which absorbs heat energy generated at the coil windings, thereby reducing the rate of transfer of heat energy from the coil windings to the casing during operation of the TMS coil device.

The invention provides a compression sensing technology-based method for distributed type information source coding. The advantages of the CS technology and the sparse characteristics of video images are adopted in a process of realizing the distributed type information source coding DSC to form a novel distributed type information source coding method, namely in the corresponding operational steps of the DSC process, the CS technology is adopted to process the video image data and execute the corresponding recovery processing which comprises using the CS operation and the sparse reconstruction of the CS to replace the data sampling and the DCT transformation operation and the DCT inverse transformation in the conventional information source coding respectively so as to use much less measuring data to reconstruct a video image source, reduce a sampling speed ratio and memory burden of the system, reinforce the robustness of the system and realize the construction of the distributed type information source coding in three different structures. The method has the advantages of reducing the sampling rate and the operating complexity of the system, obviously reducing the workload of the data sampling and relative processing and the necessary memory space, improving the robustness of the system and reducing the speed rate of data transmission.

A critical phase of video processing is the decoding of bit streams coming from standard based heavy compressed sources. Entropy coding can be effectively decoded by adopting parallelism to speed up the process. Reasonable assumptions make possible for example the multiple bits at a time processing for the Context-based Adaptive Binary Arithmetic Coding (CABAC) algorithm. In particular, a clever arithmetic section reduces single propagation for the timing critical path while decoding done for only two sequence elements at a time by calculating and maintaining most probable bit values. This in turn making accelerated path using pre-determined probability outcome through parallelism not cost.

Provided are a base station device and a transmission power control method that reduce interference with an uplink radio channel from a femto-connected terminal to a macrocell base station while avoiding an increase in signaling. A measurement unit (103) measures the macrocell signal reception level, and a propagation loss estimating unit (104) estimates propagation loss between a HUE and a HNB based on the HUE signal reception power, for example. A judgment unit (105) performs a first comparison of the macrocell signal reception level with a first threshold value and a second comparison of the propagation loss with a second threshold value, and an adjustment unit (106) generates a command to reduce the maximum value that is possible for the target control value for the HNB total reception power when the macrocell signal reception level is at least the first threshold value and the propagation loss is at least the second threshold value. A scheduler (107) determined a transmission rate allocated to the HUE based on the HUE signal and the maximum value that is possible for the target control value for the HNB total reception power.

A method and apparatus for scheduling data transmissions is disclosed that reduces the delay variability in transmissions of data. A scheduling metric is calculated as a function of a TCP throughput rate for each mobile terminal in the system. The relative value of this metric for a user is used to schedule data transmissions from that user. As a result, TCP time-outs are reduced or avoided and the throughput and the predictability of system performance are increased.

The present invention provides a communication device, comprising: transmission means for transmitting a plurality of data segments via a packet communication network, each of the data segments including a sequence number, the data segments being transmitted in sequence number order; receiving means for receiving an acknowledgement indicating a data segment which the destination device requests the communication device to transmit next; retransmission means for changing a transmission rate and fro retransmitting one of the data segments in a case that the communication device has not received an acknowledgement including an acknowledgement number greater than a sequence number included in the retransmitted data segment when a predetermined time elapses following transmission of the original data segment; control means for determining a subsequent data segment to be transmitted next, and for controlling a transmission rate on the basis of a category of the acknowledgement and also information included in the acknowledgement.

Systems and methods for dynamically controlling bandwidth of connections are described. In some embodiments, a proxy for one or more connections may allocate, distribute, or generate indications of network congestion via one or more connections in order to induce the senders of the connections to reduce their rates of transmission. The proxy may allocate, distribute, or generate these indications in such a way as to provide quality of service to one or more connections, or to ensure that a number of connections transmit within an accepted bandwidth limit. In other embodiments, a sender of a transport layer connection may have a method for determining a response to congestion indications which accounts for a priority of the connection. In these embodiments, a sender may reduce or increase parameters related to transmission rate at different rates according to a priority of the connection.

An adaptive control method in real-time communication for taking measures against the conditions of the loss of a receiver report packet which is sent out from an apparatus at the side of receiving distributed data toward a distribution server, thereby achieving an appropriate data distribution adaptive to transmission path conditions and / or communication conditions: According to the method, a dynamic arrangement for the transmission interval of a receiver report packet is made between data distribution server (301) and data reception apparatus (101) Then, after starting the transmission / reception of real-time data, data distribution server (301) monitors the reception conditions of the receiver report packet in a unit of the arranged transmission interval, and then adaptively controls a data transmission rate, etc., based on a monitoring result.

The invention provides a quantum dot light-emitting device and a display device and lighting device with the same. The quantum dot light-emitting device comprises a negative electrode, a first electron transmission layer to an n(th) electron transmission layer, a quantum dot light-emitting layer and a positive electrode which are sequentially arranged, wherein n is an integer and is more than or equal to 2 but less than or equal to 6, and in the first electron transmission layer to the n(th) electron transmission layer, the electron mobility rate of at least one layer in a second electron transmission layer to the n(th) electron transmission layer is smaller than the electron mobility rate of the first electron transmission layer. The electron mobility capability of the whole transmission layer material is reduced, thus, the electron mobility rate is reduced from the overall, the electron injection rate and the hole injection rate approximate to be relatively consistent, the luminous efficiency of the light-emitting device is improved, and the service lifetime of the light-emitting device is prolonged.

A video recording control system includes monitor cameras and video recording apparatuses. The monitor cameras are assigned to the video recording apparatuses in a manner such that each of the video recording apparatuses corresponds to at least one assigned monitor camera. Each of the monitor cameras sends its video signal to the assigned one of the video recording apparatus. The video recording apparatuses record the video signals sent from the monitor cameras. A first device operates for detecting a failure of each of the video recording apparatuses. When the first device detects a failure of at least one of the video recording apparatuses, a second device changes the assignment of the monitor cameras to the video recording apparatuses so that at least one of the monitor cameras which has been assigned to the failed video recording apparatus will be newly assigned to normal one of the video recording apparatuses.

A speech signal is input to an excitation signal generating section, a prediction filter and a prediction parameter calculator. The prediction parameter calculator calculates a predetermined number of prediction parameters (LPC parameter or reflection coefficient) by an autocorrelation method or covariance method, and supplies the acquired prediction parameters to a prediction parameter coder. The codes of the prediction parameters are sent to a decoder and a multiplexer. The decoder sends decoded values of the codes of the prediction parameters to the prediction filter and the excitation signal generating section. The prediction filter calculates a prediction residual signal, which is the difference between the input speech signal and the decoded prediction parameter, and sends it to the excitation signal generating section. The excitation signal generating section calculates the pulse interval and amplitude for each of a predetermined number of subframes based on the input speech signal, the prediction residual signal and the quantized value of the prediction parameter, and sends them to the multiplexer. The multiplexer combines these codes and the codes of the prediction parameters, and send the results as an output signal of a coding apparatus to a transmission path or the like.

The invention provides a solid energy saving screw cleaning agent which can prepare non-corrosive and non-abrasive energy saving screw cleaning material. The raw material formula of the cleaning agent is as follows by weight percentage: 40-60% of matrix resin, 30%-40% of modified powder and 10-20% of auxiliary agent, and the sum of the weight percentage of all the components is 100%; the auxiliary agent is a cleaning surface, a surface active agent, a lubricating agent, a forming agent and a blowing activator; the raw material formula of the modified powder is as follows by weight percentage: 83-97% of inorganic powder, 2.0-8.0% of dispersing agent and 1.0-5.0% of coupling agent. According to the proportion of the formula, the matrix resin, the prepared modified powder, the cleaning agent, the surface active agent, the lubricating agent, the forming agent and the blowing activator are added into a high-speed mixer, and then are extruded and formed by an extruder to obtain the solid screen cleaning agent.

A method is described by which digital data can be sent between mobile phones concurrent with speech during a same phone call. The digital data can be from a digital camera that is integrated with the mobile, or cellular, phone. The discontinuous transmission system of the mobile phone system is modified to include a transmission handler that is used to control the packetizing of the digital data to be transmitted within the voids in the transmitted speech determined by a voice activated detector. A reception handler is added to the discontinuous transmission system to allow the extraction of the digital data from the transmitted mobile phone system signal.

A central wireless microcomputer of a central wireless unit (transmitter) constituting a wireless AV system identifies a content type of video and audio data to be transmitted, according to EPG, and sets a transmission rate of the video and audio data to be transmitted, according to a detected communication condition. According to the content type thus identified, the central wireless microcomputer executes transmission rate modification control by modifying the transmission rate thus set, with reference to an MPEG rate. Thus, even when the communication condition deteriorates, it is possible to minimize deterioration of the video and audio data and maintain data transmission as much as possible.

A reaction product is formed and transferred from an autoclave to a receiving vessel at a laminar flow rate, using a self-adjusting transfer mechanism. A specific amount of water in the receiving vessel is heated and vaporized prior to the reaction product transfer to raise the pressure in the receiving vessel to saturation pressure. A flow passage between the autoclave and the receiving vessel is now opened, and a resulting pressure differential between the autoclave and the receiving vessel initiates the transfer process. A heat exchanger cools the reaction product flowing from the autoclave to the receiving vessel, where the amount of cooling is dependent upon the transfer rate of the reaction product. An increased transfer rate will cause the hotter reaction product entering the receiving vessel to increase the pressure inside the receiving vessel, thereby reducing, or self-adjusting, the transfer rate. The heat exchanger may also generate steam which is fed into the receiving vessel to adjust the pressure in the receiving vessel and thus adjust the transfer rate of the reaction product.

Systems and methods for dynamically controlling bandwidth of connections are described. In some embodiments, a proxy for one or more connections may allocate, distribute, or generate indications of network congestion via one or more connections in order to induce the senders of the connections to reduce their rates of transmission. The proxy may allocate, distribute, or generate these indications in such a way as to provide quality of service to one or more connections, or to ensure that a number of connections transmit within an accepted bandwidth limit. In other embodiments, a sender of a transport layer connection may have a method for determining a response to congestion indications which accounts for a priority of the connection. In these embodiments, a sender may reduce or increase parameters related to transmission rate at different rates according to a priority of the connection.

A method and apparatus are disclosed for reducing a transmission rate for retransmission of a current frame in a wireless communication system. The reduced transmission rate increases the probability that the current frame is correctly transmitted and acknowledged. The transmission rate is progressively reduced for the current frame to avoid the expiration of the frame's retry count, while not affecting the transmission rate of subsequent frames. The next frame should be transmitted at the highest rate permitted, by the signal quality. A disclosed retry count expiry avoidance algorithm increases the reliability of a retransmission by lowering the transmission rate for the current frame when an acknowledgement is not received. When an acknowledgement is not received, the transmitting station proceeds to a retransmitting state where the transmitting station first attempts to retransmit the frame at the same rate. When the number of “equal rate attempts” is exceeded, the retry count expiry avoidance algorithm enters to a fallback state, where the transmission rate is decreased in a progressive manner.

A household intelligent monitoring system relates to the field of image monitoring technique. The technical problems object to resolve is to reduce the cost of the monitoring system and to facilitate the mounting. The monitoring system includes the following functional modules: 1) an intelligent monitoring terminal, for the completion of the functions of intelligent picking-up of the scene to be monitored, the storing of the photograph, transmission of parts of photographs to the mobile phone of a user, and the like; 2) an infrared detectors, for all-weather monitoring of indoor instance and triggering the cam to start pick-up the scene images; 3) a Zigbee wireless transmission module, for wireless connection of the infrared detector and the intelligent monitoring terminal, and the transmission of alarm signals; 4) a GPRS wireless transmission module, for connecting the main processor of the intelligent monitoring terminal, and transmitting the photograph picked-up by the intelligent monitoring terminal onto mobile phones of users in an MMS form. The monitoring system of the invention has features of low-power consumption, low cost, convenient equipment installation, flexible mode for receiving monitoring images, and good transmission quality.

The invention relates to backing up a network element (NE) in a telecommunications system. The network element (NE) comprises at least two cluster nodes (A, B, C) that are redundancy units of each other. Each cluster node (A, B, C) contains virtual nodes (a1, a2, b1, b2, c1, c2). Pairs are formed of the virtual nodes (a1, a2, b1, b2, c1, c2) in such a manner that the first virtual node of the pair resides in the first cluster node and the second virtual node in the second cluster node. One of the virtual nodes in the pair is active and the other on standby. When a cluster node malfunctions, the virtual nodes of the pairs whose active virtual nodes reside in the faulty cluster node are interchanged by changing the standby virtual nodes to active and the active virtual nodes to standby.

A fabric treatment composition is provided. The fabric treatment composition includes a fabric treatment agent and a carrier component for containing the fabric treatment agent in a solid form during operation conditions in a dryer. The fabric treatment composition is constructed for transferring the composition to wet fabric as a result of solubilizing the fabric treatment composition by contacting the fabric treatment composition with the wet fabric during a drying operation in a dryer. A method for treating fabric is provided.

The application provides a quantum dot electroluminescent device, and a display device and a light device with a quantum dot electroluminescent device. The quantum dot electroluminescent device comprises an anode, a quantum dot layer, an electron barrier layer, and a cathode. The quantum dot layer is arranged on the surface of the anode. The electron barrier layer is arranged on the surface, away from the anode, of the quantum dot layer. Materials forming the electron barrier layer include hole transmission materials and / or hole injection materials. The cathode is arranged on the surface, away from the quantum dot layer, of the electron barrier layer. Electrons and the cavity injection quantum dot layer are basically consistent in rate, so that the electrons are close to holes or injection balance is realized during running of the quantum dot electroluminescent device. In this way, quantum dots are electrically neutral, non-radiative recombination, quantum dot charging and the like due to excess electrons in the quantum dots are prevented, and the light-emitting efficiency and the service life of the device are improved.

A circuit for use in a data packet transmission system. The circuit generally comprises a buffer and a test circuit. The buffer may be configured to store a plurality of data packets. The test circuit may be configured to (i) monitor a number of the plurality of data packets in the buffer, (ii) permit an additional data packet to the plurality of data packets into the buffer responsive to the number being less than a first threshold, and (iii) discard the additional data packet in accordance with a probabilistic test responsive to the number being greater than the first threshold.