53results about How to "Reduce bandwidth utilization" patented technology

A multi-cloud data replication method includes providing a data replication cluster comprising at least a first host node and at least a first online storage cloud. The first host node is connected to the first online storage cloud via a network and comprises a server, a cloud array application and a local cache. The local cache comprises a buffer and a first storage volume comprising data cached in one or more buffer blocks of the local cache's buffer. Next, requesting authorization to perform cache flush of the cached first storage volume data to the first online storage cloud. Upon receiving approval of the authorization, encrypting the cached first storage volume data in each of the one or more buffer blocks with a data private key. Next, assigning metadata comprising at lest a unique identifier to each of the one or more buffer blocks and then encrypting the metadata with a metadata private key. Next, transmitting the one or more buffer blocks with the encrypted first storage volume data to the first online cloud storage. Next, creating a sequence of updates of the metadata, encrypting the sequence with the metadata private key and then transmitting the sequence of metadata updates to the first online storage cloud.

A system for monitoring at least one tag device has at least one mobile cellular telephone. The mobile cellular telephone is capable of communicating on a WiFi network, wherein the at least one tag device transmits wireless data messages in a non-associating mode.

A radio frequency ranging system is grounded in establishing and maintaining phase and frequency coherency of signals received by a slave unit from a master unit and retransmitted to the master unit by the slave unit. For a preferred embodiment of the invention, coherency is established through the use of a delta-sigma phase-lock loop, and maintained through the use, on both master and slave units, of thermally-insulated reference oscillators, which are highly stable over the short periods of time during which communications occur. A phase relationship counter is employed to keep track of the fractional time frames of the phase-lock loop as a function of the reference oscillator, thereby providing absolute phase information for an incoming burst on any channel, thereby enabling the system to almost instantaneously establish or reestablish the phase relationship of the local oscillator so that it synchronized with the reference oscillator.

The invention discloses a cache system for a cloud computing network, which is arranged on each node of the cloud computing network and comprises a service module for receiving tasks transmitted fromother nodes and recording the types of the tasks which can be executed by a local node; a distributing module for distributing the tasks received by the local node to the local node to execute the tasks or forwarding the tasks to other nodes; a caching strategy module for recording the caching policies of various tasks, wherein the caching policies comprise a caching decision and a caching time; and a caching management module for managing the cache size of the local node, searching the task in a cache of the local node, and storing the task to the cache of the local node. The invention also discloses a caching method for the cloud computing system. The cache system for the cloud computing network and the method thereof establish a local cache system of each node in the cloud computing network, also utilize the cache system of a CDN network, so that the cloud computing can be performed faster and more efficient world wide, avoid the probability of each node to execute the same task repeatedly and also reduce the utilization of a network bandwidth greatly.

A system and method for operating a network security system implementing security cameras, motion sensors, access control systems, security door locks, and mobile panic button devices within a monitored area. Security cameras transmit video to a network video recorder and the video is analyzed by a video analytics system to determine if a security event is occurring. If a security event occurs, a security control system calls a dispatch service, which transmits a notification to only those security guards who are within a given area of the event.

The invention belongs to the field of network cluster management, and provides a cluster monitor and management method and system. According to the method and system, key value type databases are created on a monitor node and all computing nodes respectively, and updating data of the computing nodes are synchronized to the monitor node through direct synchronization between the key value type databases. Due to the fact that the key value type databases are internal storage type non-relational databases, and have the high read-write speed and flexible data storage types, the time for achieving data synchronization through the databases is short, the competitive relation between the computing nodes is not large, the pressure of the monitor node can be effectively relieved, the network broadband utilization rate can be reduced, data zero redundancy, high availability and high expandability can be achieved, and in addition, a principle and method with grouping management easy are provided.

The embodiments of the invention disclose a content distribution network data processing method, device and system, and relates to the technical field of Internet. According to the invention, the problem that the bandwidth of a content distribution network is wasted greatly and the problem that the bandwidth utilization ratio of the content distribution network is low in the prior art can be solved. The method comprises the following steps: version information of a data file is acquired; whether the data file has a content update is judged according to the version information of the data file; and if the data file has the content update, a data file corresponding to the version information is acquired from a content distribution network server. The method, device and system of the invention is suitable for being used in a content distribution network.

The invention relates to the technical field of wireless local area network communication, in particular to a commercial WIFI (Wireless Fidelity) user dynamic bandwidth limiting method and system. The commercial WIFI user dynamic bandwidth limiting method comprises the following steps: 1) detecting a bandwidth utilization rate of commercial WIFI equipment; 2) setting a user bandwidth triggering threshold according to the bandwidth utilization rate; and 3) when a bandwidth usage amount of a user exceeds the user bandwidth triggering threshold, setting a bandwidth speed limiting value for a corresponding user. Through adoption of the commercial WIFI user dynamic bandwidth limiting method and system, the bandwidth speed limiting value of the user is adjusted dynamically according to the overall bandwidth utilization rate of the equipment, so that the network usage experience of the user can be ensured as much as possible, and the problem of network congestion can be solved well.

A method and system suitable for inferring trajectory predictor parameters of aircraft for the purpose of predicting aircraft trajectories. The method and system involve receiving trajectory prediction information regarding an aircraft, and then using this information to infer (extract) trajectory predictor parameters of the aircraft that are otherwise unknown to a ground automation system. The trajectory predictor parameters can then be applied to one or more trajectory predictors of the ground automation system to predict a trajectory of the aircraft. In certain embodiments, the method and system can utilize available air-ground communication link capabilities, which may include data link capabilities available as part of trajectory-based operations (TBO).

The invention discloses a distributed system command line configuring and delivering method, which adopts the technical proposal that: firstly, parameter analysis, abstraction and configuration of the configuration command character string is performed on the main processor and then the configuration command character string is transmitted to the other processor; secondly, other processor receives the configuration command character string for parameter analysis, abstraction and configuration. The invention has the advantages that: configuration command character string is used instead of memory data structure, so that the communication information quantity between the main processor and other processors is reduced, bandwidth utilization rate is reduced, and the stability and efficiency of out-band communication is increased; the processing flow of the main processor and the other processor is uniform, so that the realization and maintenance is simpler and more convenient.

A system for receiving network video includes a remote control with a power control input. A video receiver, controlled by the remote control, powers up or powers down based on a control signal indicating activation of the power control input. The video receiver receives video signals from a gateway or gateway source connected to the video network. The gateway decodes signals received from the network into a format acceptable by the receiver. If the gateway receives a control signal from the remote control indicating activation of the power control input and the gateway is currently in the “on” state, the gateway toggles to the “off” state and outputs a predefined channel to the receiver.

The invention relates to a self-adaption coupling system for a single mode optical fiber based on two-dimensional scanning of the optical fiber end surface. The self-adaption coupling system comprises a rapid tilting reflection mirror, a coupling lens, an optical fiber end surface positioning device, a single mode optical fiber, 1*2 optical fiber branching device, a photoelectric detector, a control platform and a multi-channel high-voltage amplifier. According to the self-adaption coupling system, the efficient and stable coupling efficiency of space light and the single mode optical fiber is guaranteed; the optical fiber end surface positioning device is utilized for controlling the optical fiber end surface so as to realize the two-dimensional scanning of focused light spots, and the change rule of the power of light output by the optical fiber is monitored so as to calculate the optimization gradient of the coupling efficiency; and the rapid tilting reflection mirror is combined with an optimization algorithm, so that the self-adaption capturing tacking of the optical fiber end surface to the focused light spots is finished. The self-adaption coupling system has the innovation points that the optimization gradient detection is realized by virtue of the two-dimensional scanning of the optical fiber end surface to the focused light spots; the optimization gradient detection is separately executed with an iteration calibration process, so that the self-adaption coupling system has the advantages that the bandwidth availability ratio of a device is high, the Motion inertia is small, the tracking precision is high, the structure is compact, and the like; and the self-adaption coupling system has important application prospects in the communication field of space light.