41results about How to "Unlimited scalability" patented technology

Without actually storing session-state information, the described exemplary implementations of session-state manager identify a user, validate the user's current logon state, and determine whether the user's session should expire. User identification and logon validation are checked by a server in a stateless network by generating a mathematically session-state token and sending that token to a user. Subsequently, the server receives a mathematically session-state token from the user and checks that token. If that token checks out, then the user is allowed continuing access under the same session. If it doesn't check out, then the user may be forced to start a new session by logging-on again. Alternatively, the server may check to see if the token would check out if it had come at an earlier time block. The session-state tokens are mathematical encoded and are generated using a one-way encryption scheme. Such a one-way encrypted token is scientifically impossible to reverse-engineer. Furthermore, logon expiration is checked by the server using the same mathematically session-state token. The token is checked to determine whether a predetermined number of time blocks have past. If so, then the server will terminate the user's session.

An apparatus and method for rapid translation of geographic latitude and longitude into any of a number of application-specific location designations or location classifications, including street address, nearest intersection, PSAP (Public Safety Answering Point) zone, telephone rate zone, franchise zone, or other geographic, administrative, governmental or commercial division of territory. The speed of translation meets call-setup requirements for call-processing applications such as PSAP determination, and meets caller response expectations for caller queries such as the location of the nearest commercial establishment of a given type. To complete its translation process in a timely manner, a memory-stored spatial database is used to eliminate mass-storage accesses during operation, a spatial indexing scheme such as an R-tree over the spatial database is used to locate a caller within a specific rectangular area, and an optimized set of point-in-polygon algorithms is used to narrow the caller's location to a specific zone identified in the database. Additional validation processing is supplied to verify intersections or street addresses returned for a given latitude and longitude. Automatic conversion of latitude-longitude into coordinates in different map projection systems is provided.The memory-stored database is built in a compact and optimized form from a relational spatial database as required. The R-tree spatial indexing of the memory-stored database allows for substantially unlimited scalability of database size without degradation of response time. Maximum performance for database retrievals is assured by isolating the retrieval process from all updating and maintenance processes. Hot update of the in-memory database is provided without degradation of response time.

This invention describes a method for decentralized decoding of a multichannel audio signal by broadcasting the original encoded data and distributing the decoding process between a plurality of receiving units. This allows for the design and manufacture of scalable multichannel audio reproduction systems having an arbitrary number of output channels, composed of a plurality of generic decoder and loudspeaker units each generating fewer output channels. With distributed decoding, a manufacturer can use “off-the-shelf” stereo or mono signal processors, digital-to-analog converters and amplifier components in each generic decoding module, thus reducing manufacturing costs and complexity requirements for each module while offering unlimited scalability in the total number of output channels.

A RAID controller with decentralized transaction processor controllers and a decentralized cache allows for unlimited scalability in a networked storage system. Virtualization is provided through a map-and-forward function in which a virtual volume is mapped to its logical volumes at the controller level. Any controller in the system can map a request from any host port to any logical storage element. The network storage system provides a controller / virtualizer architecture for providing mirror consistency in a virtual storage environment in which different hosts may read or write to the same logical block address simultaneously. Each storage controller or virtualization engine controls access to a specific set of storage elements. One virtualizer engine is the coordinator, and monitors all write requests and looks for potential data conflicts. The coordinator alleviates conflicts by holding specific requests in a queue until execution of those request causes no data inconsistencies or cache incoherencies.

The invention provides a power grid scheduling cloud system. The power grid scheduling cloud system comprises a scheduling physical layer, a service center layer and a user layer which are sequentially arranged. According to the power grid scheduling cloud system, a new calculating mode of cloud computing, a business mode and an application mode are adopted, and the scheduling system of the whole power grid is integrally designed again.

An aircraft provides hovercraft power via fabric fans that produce lift for supporting the craft above an underlying support surface. Fabric fans are specially configured for maximum efficiency. In one embodiment, a helicopter utilizes the fan as part of a tail rotor assembly.

The invention belongs to the technical field of nucleic acid isothermal amplification, and particularly relates to a microfluidic chip for multiple loop-mediated isothermal amplification (LAMP) detection and a preparation method thereof. The chip is made of a high polymer, and is prepared by a micro-electromechanical system (MEMS) method. The chip mainly comprises amplification pools which are spatially and sequentially arranged, capillary channels, and connecting pipelines, wherein the amplification pools realize the effective discrimination of multiple LAMP signals through the spatial discrimination of the signals; the capillary channels are used for preventing the intersection and mixing of LAMP primers, amplification products, byproducts and the like among different amplification pools; and the amplification pools and the capillary channels are communicated through the connecting pipelines, so that fluid steadily and uniformly flows into the amplification pools from the capillary channels. The chip is easy to manufacture and operate; and an effective scheme is provided for the realization of the synchronous clinical detection of various pathogens by an LAMP method.

Without actually storing session-state information, the described exemplary implementations of session-state manager identify a user, validate the user's current logon state, and determine whether the user's session should expire. User identification and logon validation are checked by a server in a stateless network by generating a mathematically session-state token and sending that token to a user. Subsequently, the server receives a mathematically session-state token from the user and checks that token. If that token checks out, then the user is allowed continuing access under the same session. If it doesn't check out, then the user may be forced to start a new session by logging-on again. Alternatively, the server may check to see if the token would check out if it had come at an earlier time block. The session-state tokens are mathematical encoded and are generated using a one-way encryption scheme. Such a one-way encrypted token is scientifically impossible to reverse-engineer. Furthermore, logon expiration is checked by the server using the same mathematically session-state token. The token is checked to determine whether a predetermined number of time blocks have past. If so, then the server will terminate the user's session.

The invention relates to a message forwarding method and a device thereof based on a token bucket. The method comprises the following steps: token buckets are set based on priority level; the initial capacity of each token bucket of a different priority level is the total available bandwidth; and when receiving a message of certain priority level, the device searches the token bucket matched with the message to forward the message. If the token number of the token bucket of the priority level meets the requirements for the message forwarding, the device then forwards the message; simultaneously the capacities of the token bucket of the priority level and the token bucket of a lower priority level are updated, which equal to the current capacities thereof minus the number of the token used for the message forwarding, and then the capacities thereof after updating are regarded as the current capacities. The message forwarding method and the device thereof realize the low complication and high efficiency and are easy to expand the priority level.

The invention discloses an aluminum cell anode effect prediction device belonging to the technical field of aluminum electrolysis. The device comprises an isometric pressure drop measuring fork, a temperature sensor, a current distribution on-line monitor for processing output signals of a measuring fixture, a ZIGBEE wireless network for signal transmission, and a control device for warning processing according to the received signals. The invention also discloses an aluminum cell anode effect prediction method which comprises the following steps: correcting isometric pressure drop values based on measured temperature values to obtain the current value of each aluminum cell anode rod, normalizing the difference between the current value and an ideal current value, comparing the normalizing result with a preset threshold, and judging whether the measured aluminum cell anode rod is subjected to the anode effect. The invention can monitor the distribution of current in the normal production process of the aluminum cell in real time and give an early warning, thereby effectively ensuring that the effect can be eliminated and harm caused by the effect can be reduced as early as possible.

The invention discloses a system and a method for decentralized scheduling of autonomous flow engine load balancing clusters and belongs to the technology of cluster computing in the technical field of information. In the system and the method, multilayer clustering is performed on a server flow engine, the server flow engine is divided into a plurality of cluster node groups, each cluster node group is divided into a plurality of cluster nodes, and each cluster node is subdivided into a plurality of flow engines; and different cluster node groups carry out autonomy, a total scheduler is cancelled, and the cluster nodes in the same cluster node group are mutually spared by adopting a heartbeat detection method. The conventional total scheduling function is transferred from a server system and is scattered into a client system, and the client system calculates a requested service provider by adopting a rotation method according to a flow engine list so as to reduce the scheduling pressure of a server. According to the system and the method, the problems of single-port bottlenecks and single-point failure of the conventional load balancing clusters are effectively solved through the decentralized scheduling, and the response speed and processing capacity of the clusters are improved.

Provided is a design of a virtual firewall assembly acting on a cloud computing data center security domain. The invention relates to Web direction network security production, and particular relates to a network security technology under a cloud computing environment. The technical scheme is that the firewall assembly is operated via a distributed deployment security gateway so that customized and distributed security protection of the overall data center is completed. A new firewall system structure comprises the following parts: the unified security gateway, the network firewall assembly and central management. The firewall assembly based on a data packet filtering technology is realized. The assembly operates in the unified security gateway. Network traffic is controlled by using the data packet filtering technology, distributed deployment is used and customized security protection of the overall data center is completed.

A method for communication includes coupling a group of switches in a Layer-2 bridged network. The interfaces of the switches are configured so that at least one interface of at least one of the switches is configured as a first interface type, and a plurality of other interfaces are configured as a second interface type. Upon receiving frames through the interfaces of the first and second types for transmission over the network, the received frames are labeled with corresponding first and second type indications. The frames are forwarded through the Layer-2 bridged network using the switches responsively to the type indications. Frames labeled with the second type indication are permitted to be transmitted through the interfaces of the first type and prevented from being transmitted through the interfaces of the second type.

A data analyzing system. The data analyzing system includes a number of data capture devices. The data capture devices may be for example, at different points in a network or for testing different components in a system. The data analyzing system further includes a distributed storage system connected to the data capture devices. The distributed storage system includes one or more portal servers. The distributed storage system further includes a number of storage servers coupled to the one or more portal servers. The one or more portal servers are configured to direct data from the data capture devices to the storage servers.

The invention relates to a medical image storing and transmitting system, which belongs to the field of a medical system, and comprises a patient examination information base, image acquisition equipment, a basic data storage module, a hot plug data storage module, an image diagnosis work station, display equipment, operation equipment and printing equipment. The image acquisition equipment is connected with the patient examination information base through a transmission cable and is provided with a camera, a scanning device and a data output interface; the data output interface is connected to a DICOM (Digital Imaging and Communications in Medicine) interface of the basic data storage module; the basic data storage module is connected with the hot plug data storage module, passes through the hot plug data storage module and then is connected with the image diagnosis work station; the DICOM interface is used for synchronously transmitting data acquired by the camera and the scanning device and corresponding data in the patient examination information base to the basic data storage module; and a photographic film is printed by the printing equipment connected on the image diagnosis work station. Due to the adoption of the network distribution storage technology, mass storage management and access technology can be realized; and due to the adoption of a multistage storage structure, the storage space and the performance have infinite expansion capability and the system has high stability and is convenient to expand.

This invention describes a method for decentralized decoding of a multichannel audio signal by broadcasting the original encoded data and distributing the decoding process between a plurality of receiving units. This allows for the design and manufacture of scalable multichannel audio reproduction systems having an arbitrary number of output channels, composed of a plurality of generic decoder and loudspeaker units each generating fewer output channels. With distributed decoding, a manufacturer can use “off-the-shelf” stereo or mono signal processors, digital-to-analog converters and amplifier components in each generic decoding module, thus reducing manufacturing costs and complexity requirements for each module while offering unlimited scalability in the total number of output channels.

Without actually storing session-state information, the described exemplary implementations of session-state manager identify a user, validate the user's current logon state, and determine whether the user's session should expire. User identification and logon validation are checked by a server in a stateless network by generating a mathematically session-state token and sending that token to a user. Subsequently, the server receives a mathematically session-state token from the user and checks that token. If that token checks out, then the user is allowed continuing access under the same session. If it doesn't check out, then the user may be forced to start a new session by logging-on again. Alternatively, the server may check to see if the token would check out if it had come at an earlier time block. The session-state tokens are mathematical encoded and are generated using a one-way encryption scheme. Such a one-way encrypted token is scientifically impossible to reverse-engineer. Furthermore, logon expiration is checked by the server using the same mathematically session-state token. The token is checked to determine whether a predetermined number of time blocks have past. If so, then the server will terminate the user's session.

The invention discloses a method for realizing network identification conversion, an apparatus and a system thereof. The method, the apparatus and the system are applied on border gateway. The method comprises the following steps: after a head message of a terminal is received, determining whether source network identification of the terminal is an IPv6 address; if the source network identification of the terminal is not an IPv6 address, setting an identification code for the terminal and generating objective network agent identification for the terminal; establishing mapping relation information of the identification code of the terminal and the objective network agent identification. According to the invention, the source network identification can be translated into an objective network identification agent so that the source network identification can be reused. Theoretically, infinite expansibility is possessed. On the border gateway, the reused source network identification can be clearly distinguished. By using the method, the apparatus and the system of the invention, foreign identification translation and a reuse expansion ability of the source network identification can be effectively performed. Intercommunication and fusion of different network identification and different addressing mode networks are effectively achieved. A service is provided maximumly for the user.

A user annotates a shared document with text, sound, images, video, an e-mail message, graphics, screen snapshots, web site snapshots to share with others. The document and its annotations are stored in a digital object repository to which other users have access. Within the closed collaboration system, only users who are authenticated may upload digital objects, annotate digital objects and view objects and their annotations. The user sends a message to other users to invite them to view the object and its annotations and to add their own annotations. An annotated object generates an alert for all of the invited users. A remote authentication gateway authenticates users and has a repository for user metadata. Digital object repositories are separate from the authentication gateway, thus providing for disintermediation of the user metadata from the digital object data. The collaboration system may be hosted by a third party on a server computer available over the Internet that displays a web site. A user is not required to have collaboration system software on his or her computer and may annotate any image on the web site for later viewing by other users of the web site.

A Multi-Level Processor 200 for reducing the cost of synchronization overhead including an upper level processor 201 for taking control and issuing the right to use shared data and to enter critical sections directly to each of a plurality of lower level processors 202, 203 . . . 20n at processor speed. In one embodiment the instruction registers of lower level parallel processors are mapped to the data memory of upper level processor 201. Another embodiment 1300 incorporates three levels of processors. The method includes mapping the instructions of lower level processors into the memory of an upper level processor and controlling the operation of lower level processors. A variant of the method and apparatus facilitates the execution of Single Instruction Multiple Data (SIMD) and single to multiple instruction and multiple data (SI>MIMD). The processor includes the ability to stretch the clock frequency to reduce power consumption.

A Multi-Level Processor (200) for reducing the cost of synchronization overhead including an upper level processor (201) for taking control and issuing the right to use shared data and to enter critical sections directly to each of a plurality of lower level processors (202, 203...20n) at processor speed. In one embodiment the instruction registers of lower level parallel processors are mapped to the data memory of upper level processor (201). Another embodiment (1300) incorporates three levels of processors. The method includes mapping the instructions of lower level processors into the memory of an upper level processor and controlling the operation of lower level processors. A variant of the method and apparatus facilitates the execution of Single Instruction Multiple Data (SIMD) and single to multiple instruction and multiple data (SI>MIMD). The processor includes the ability to stretch the clock frequency to reduce power consumption.

The invention discloses an infinitely-extensible unified management teaching system comprising a student terminal, a teacher terminal, and a cloud server. The cloud server is used for data storage and processing and internet-based data resource updating at any time; the teacher terminal is used for searching data resources in the cloud server, downloading, editing, storing, and transmitting the data resources, and uploading the data resources to the cloud server; and the student terminal is used for receiving the data resources sent by the teacher terminal, editing the data resources sent by the teacher terminal within a permission range, and feeding the data resources to the teacher terminal. According to the invention, the traditional teaching way is split and recombined by using a modularization concept; and thus infinite extension of a teaching process as well as infinite extension of a teaching content is realized.

This invention relates to a MPEG-4 image transmission method and system based on MCF5272 platform. The system is composed components of image collection, format transformation, image compression, a core process and a power supply. The method is as follows: 1, applying analog signals received by the image collection component from the camera head for A / D conversion, 2, applying the digital signal of CCIR 656 format transferred the image collection component by the format conversion unit to convert it to that of CCIR601 format, 3, applying the digital signals from the format conversion unit to compress the MPEG-4 format 4, applying the core process component to implant uClinux operation system and applied software processed and forwarded to networks.

The invention discloses a multichannel voltage difference value sampling circuit and method, relates to a new generation of information technology, and aims to solve the problems of high circuit powerconsumption, complicated circuit and high requirement for the loop stability in the prior art. The sampling circuit comprises more than two gating units, a reset unit, a sampling capacitor and a switch unit. The control ends of the gating units are respectively connected with gating signals one by one, and the input ends of the gating units are respectively connected with each to-be-sampled voltage one by one; the output ends of all the gating units and the output end of the reset unit are connected and then are connected with the sampling capacitor and the switch unit in series. The samplingcircuit and method have the advantages that charge distribution of the sampling capacitor can be reconfigured by reasonably switching on the gating unit and the switch unit, voltage difference can besampled needless of an operational amplifier, the circuit structure is very simple and can be expanded infinitely, two or more voltages can be randomly combined for sampling, and the adaptability isvery high.

The present invention relates to an electric and electronic technology experimental device. The electric and electronic technology experimental device comprises a mother board and a daughter board which can be plugged with the mother board, and the daughter board comprises an LCD module, a DC-DC boost module, a DC-DC buck module, a motor module, a resistor measurement module, a high speed voltage-controlled module, an MDAC module, a frequency-phase-lock module and an LED module. The mother board comprises an MCU, a communication module and a memorizer, and the communication module comprises a USB, a UART, an I2C, an SSI / SPI and a CAN. During the experiment process, by just needing to insert the experimental modules on the mother board, the modular design facilitates improving the attentions of the students on the experimental parts, and the electric and electronic technology experimental device has the advantage of integrating the simplification, versatility, portability, modularization as one.

The invention discloses a service aggregation and caching method for a service network. In the process of uploading mass data to a data center through a content routing node, a data packet is converted into a service packet when passing through an edge node, then the service packet is transmitted upwards hop by hop, and meanwhile, an aggregation node periodically performs service aggregation on the received service packet. After a plurality of service packets are aggregated to form a larger new service packet, the aggregation node correspondingly caches the service packet locally and directlyreturns data when the service packet is requested by a user later. According to the method provided by the invention, each content routing node can be used as a small data center to carry out data processing and request response, so that the load of a data center server is reduced by multiple times. Theoretical analysis and experimental results show that compared with a traditional data center network and a service aggregation method adopted as well, the method can reduce the transmission data volume to a greater extent and remarkably improve the network performance.

The invention discloses a visual intercom alarm system which comprises at least one station, a cloud platform and at least one center management platform. The station comprises front-end equipment provided with an intercom device and a video collection device. The center management platform comprises a management client side and a video display device. The intercom device is provided with a one-key call button for starting a calling dialogue with a management center. The video collection device is used for collecting a station on-site video. The cloud platform is used for configuring management, receiving registration of the management client side and the front-end equipment, receiving an alarm request of the front-end equipment and receiving a requirement that the management client side requests the front-end equipment. The center management platform is composed of one or more management client sides. The management clients are subjected to load balancing according to established rules so as to complete central alarm processing work jointly. The visual intercom alarm system is used for performing one-key communication alarm through the arranged front-end equipment and achieves system alarm emergency treatment through the cloud platform and the center management platform.

The invention relates to the electric power scheduling technology field and provides a power grid scheduling optimization method based on a cloud decision and a system thereof. The method comprises the following steps of according to power grid operation data and a power-grid-scheduling real time simulation model, carrying out simulation and acquiring a first layer power grid parameter information decision factor; according to a distributed model and an external communication information relation model, carrying out cooperation calculating and acquiring a second layer communication information scheduling decision factor; according to the first layer power grid parameter information decision factor and the second layer communication information scheduling decision factor, through setting a self-learning knowledge base module and a definition requirement, establishing an association model of a power grid parameter and communication information scheduling, according to the association model and planned data, carrying out optimization analysis, and acquiring a power grid scheduling communication information cloud decision requirement and a power grid parameter cloud decision service. By using the power grid scheduling optimization method based on the cloud decision and the system thereof, an adverse effect of an adverse factor can be effectively eliminated or decreased, and a power grid scheduling management quality level and system reliability are increased.