41results about How to "Unlimited scalability" patented technology

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.

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.

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.

A computer interface device includes circuitry enclosed in a housing; a first cable electrically connected to the circuitry and integral with the housing; a video port connection plug electrically connected to the circuitry via the first cable; a mouse port connection plug electrically connected to the circuitry via a path through the housing of the video port connection plug; and a keyboard connection plug electrically connected to the circuitry via a path through the housing of the video port connection plug.

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.

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 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.

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.