87results about How to "Consistent state" patented technology

Provided are methods, data processing systems, recovery components and computer programs for recovering from storage failures affecting data repositories. At least a part of the recovery processing is performed while the data repositories are able to receive new data and to allow retrieval of such new data. Although new data items may be received into the repository and retrieved therefrom during recovery processing, updates to the data repository which were performed before the failure and which are then restored to the repository by the recovery processing are restored within a recovery unit of work and are inaccessible to processes other than the recovery process until successful completion of the recovery unit of work. The recovery processing ensures that the recovered repository is consistent with the state of the repository at the time of the failure, but is available for addition and retrieval of new data items before completion of the recovery processing.

A service provisioning mediator entity in a communications system is provided with information defining a set of service provisioning triggering messages. In response to receiving a service provisioning triggering message including an identifier associated with a user from a further network entity involved in providing the service to the user, the service provisioning mediator entity triggers service provisioning in the communications system for the user. The service provisioning triggering message may be sent by a controlling network entity upon receiving from an information store a message indicating that a user attempting to register is not recognized. If the user is recognised, trigger information in the information store may be used for directed a session to a network entity configured to handle service provisioning triggering messages. As a further alternative, a user may request rervice provisioning by sending a service provisioning triggering message from a communication device.

A method for checkpointing a multithreaded application program, based on the egalitarian and competitive active replication strategy. The invention enables different threads to be checkpointed at different times in such a way that the checkpoints restore a consistent state of the threads at a new or recovering replica, even though the threads operate concurrently and asynchronously. Separate checkpoints are generated for the local state of each thread and for the data that are shared between threads and are protected by mutexes. The checkpoint of the shared data is communicated in a special message that also determines the order in which the claims of mutexes are granted to the threads. A source-code preprocessor tool is described for inserting code into an application program to checkpoint the state of the thread during normal operation and to restore the state of the thread from the checkpoint subsequently.

A network control system that achieves high availability for forwarding state computation within a controller cluster by replicating different levels of table state between controllers of the controller cluster. To build a highly available controller cluster, the tables for storing the forwarding state are replicated across the controllers. In order to reduce network traffic between the controllers, fewer tables are replicated to slave controllers, which then recompute the forwarding state of the master controller in order to have a replicate copy of the master controller's forwarding state for possible failover. In other embodiments, more tables are replicated to minimize the recomputations and processor load on the slave controller. The network control system of some embodiments performs continuous snapshotting to minimize downtime associated with reaching a fixed point and replicating the state.

Some embodiments provide a novel network control system that provides publications for managing different slices (e.g., logical and / or physical entities) of a network. The publications are published from publisher controllers in the network control system to subscriber controllers. The network control system uses publications with generation numbers and buffered subscribers to implement the fixed points in order to help maintain a consistent network state. The information published with a publication is useful for resolving conflicts in the network control system when multiple publisher controllers provide conflicting inputs to a subscriber controller.

The system and method described herein may use reverse path lookup to build mappings between file handles that represent network file system objects and full path names associated therewith and distinguish hard links between different file system objects having the same identifier with different parents or file names. The mappings and information distinguishing the hard links may then be cached to enable replicating changes to the file system. For example, a server may search the cached information using a file handle associated with a changed file system object to obtain the file name and full path name associated therewith. The server may then send the file name and full path name and metadata describing how the file system object was changed to a replica host, which may then replicate the change to the file system object.

Some embodiments provide a novel network control system that uses secondary input queues to receive and store inputs from multiple input sources prior to moving the inputs to a primary input queue for processing. The secondary input queues provide a separate storage for each input source so that the inputs from the different sources do not get mixed with each other to ensure that fixed points and barriers sent to the controller maintain their integrity.

The invention discloses a fast marking technique with a liner structure light sensor based on coplanar reference. By displacing the coplanar reference freely, determine a plane with the light bar information acquired on the image surface and by penetrating the projecting center with a camera. Determine the position of light plane relates to the camera, according to the intersection of above determined plane and the plane of the reference, and the intersection acquired by freely displacing the coplanar reference. There is no position requirement to the reference plane and no blackout between the different plane while marking the reference which ensures that the measuring status is completely the same as the marked status so to acquire considerable marking accuracy.

Provided are methods, data processing systems, recovery components and computer programs for recovering from storage failures affecting data repositories. At least a part of the recovery processing is performed while the data repositories are able to receive new data and to allow retrieval of such new data. Although new data items may be received into the repository and retrieved therefrom during recovery processing, updates to the data repository which were performed before the failure and which are then restored to the repository by the recovery processing are restored within a recovery unit of work and are inaccessible to processes other than the recovery process until successful completion of the recovery unit of work. The recovery processing ensures that the recovered repository is consistent with the state of the repository at the time of the failure, but is available for addition and retrieval of new data items before completion of the recovery processing.

A motorized wheelchair having transmission rollers to transmit the rotation of rear wheels to front wheels while being disposed at a transmission position between circumferential surfaces of front and rear wheels, a roller supporting arm for rotatably and oscillatingly supporting the transmission rollers in the front-rear direction of the wheelchair, and transmission roller pressure-contact springs for urging the roller supporting arm in a direction of the transmission position. An operation lever constrains the roller supporting arm in an interlocking manner in the direction away from the transmission position when being at the regular position, and releases the constrains when the operation lever being at the working position so as to allow the transmission rollers to be disposed at the transmission position.

The system and method described herein may use reverse path lookup to build mappings between file handles that represent network file system objects and full path names associated therewith and distinguish hard links between different file system objects having the same identifier with different parents or file names. The mappings and information distinguishing the hard links may then be cached to enable replicating changes to the file system. For example, a server may search the cached information using a file handle associated with a changed file system object to obtain the file name and full path name associated therewith. The server may then send the file name and full path name and metadata describing how the file system object was changed to a replica host, which may then replicate the change to the file system object.

A method is provided for operating a communication device offering a plurality of features by a plurality of virtual machines, which run on a virtualized representation of a plurality of hardware components. The method includes: obtaining a mapping between at least some features of the plurality of features and corresponding sets of virtual machines of the plurality of virtual machines and hardware components of the plurality of hardware components which are required to enable the features; and upon deciding to activate or deactivate at least one group of features of the plurality of features, switching on or off virtual machines of the plurality of virtual machines and hardware components of the plurality of hardware components depending on the mapping.

The invention discloses a control method of user equipment enter / exit discontinuous receiving state, wherein, the Node B transmits control commands in a user equipment for commanding the user equipment enter or exit the discontinuous receiving state of resource allocation control channel; the user equipment receives the resource allocation control channel and perform the corresponding feedback operations according to whether the control commands are received rightly; the Node B can perform the subsequent processing according to the feedback case of the user equipment. According to the invention, the reliability for transmitting commands can be improved, meanwhile, the transmitting and the receiving states of the resource allocation control channels on the transmitting side and the receiving side can be kept in consistence, thereby ensuring the normal data transmitting process and implementing the consumption-saving function of the terminal.

The invention discloses an automatic torque applying calibrating apparatus for a torque spanner. The automatic torque applying calibrating apparatus is formed by a servo motor, a speed reduction mechanism, flexible couplers, connectors, a torque sensor, radial support mechanisms, a check arm mechanism, a machine body guide rail and a measuring control system, wherein the torque sensor is arranged between the two radial support mechanisms; one end of the torque sensor is connected with one flexible coupler by one connector while the other end is connected with a square tenon of the calibrated torque spanner by the other flexible coupler and the other connector; the connector connected with the square tenon of the calibrated torque spanner is kept horizontal under the common action of the radial support mechanisms and the flexible coupler, so the gravity center of the torque spanner is kept vertical and downward. Influence to the toque sensor and the torque spanner caused by poor component generated in the calibration process is avoided, influence to an indication value of the torque sensor caused by the self weight of the torque spanner is eliminated, the torque applying is automatically performed, the torque applying speed is accurately controlled, the accuracy of the calibrating apparatus for the torque spanner is improved, the calibrating accuracy of the indication value of the torque spanner is improved, the labor intensity is reduced, and the calibration efficiency is improved.

The invention discloses a testing device for tracking performance of a photoelectric stabilization tracking platform. The device comprises a collimator tube, a display screen and a video management computer, wherein the video management computer can directly output a practically recorded video image containing a true target and a background, and can also output a video image which is generated by software superposition and contains a simulated target and the background; the display screen is placed on a focal plane of the collimator tube, and displays the video image which is output by the video management computer and contains the background and the simulated target; and the collimator tube sends the collimated video image into a view field of the to-be-tested photoelectric stabilization tracking platform. The device can test the servo tracking loop performance of the photoelectric stabilization tracking platform, and can also test the performance of a video tracker according to variations of the background and the simulated target of the image on the display screen, so that the comprehensive tracking performance testing of the photoelectric stabilization tracking platform is achieved. The testing device has the advantages that the testing device is simple in structure, easy to operate, and wide in testing range.

The invention provides a virtual reality rock climbing machine. By means of the virtual reality rock climbing machine, rock climbing scenes can be selected indoors according to personal preferences. The virtual reality rock climbing machine comprises a rock climbing machine physical structure and a control system. The rock climbing machine physical structure comprises a main motor, a chain belt, chain plates, installation holes, rock climbing supporting points, a stable supporting structure and a slow descent structure. The control system is arranged on the rock climbing machine physical structure. A virtual reality technology and a real-time human skeleton capturing technology are introduced into rock climbing fitness exercises, users can autonomously select sceneries around the world as the virtual reality rock climbing scenes and can select various game modes, such as teaching, games and networking races, and immersion type rock climbing experience brought by virtual reality enables the users to be filled with fun and excitement in the rock climbing process.

The invention discloses a real-time data synchronization method and system between main and standby nodes. The method comprises the following steps: starting the system, realizing the data synchronization from a main node to a standby node in a total synchronization mode; after the total synchronization, modifying the configuration parameter of the main node, and realizing the data synchronization from the main node to the standby node in an incremental synchronization mode; during the incremental synchronization, synchronizing the data to the standby node in an internal memory copy mode; and modifying the data by the standby node according to the copied information, and refreshing the configuration parameter according to the modified data. By adopting the real-time data synchronization method and system disclosed by the invention, the instantaneity of data synchronization is obviously improved, and the consistency of the service operation state and the configuration parameter and other information of the device before and after the handover of the main and standby nodes is guaranteed.

The invention discloses a high-altitude satellite power control device accelerated life test system and method. The system comprises a high-temperature test chamber, a power control device, a solar battery array simulator, a storage battery pack simulator, an electronic load and a test process control computer, wherein the high-temperature test chamber is used for providing high-temperature environment required by a test; the power control device is put in the high-temperature test chamber, and is used for adjusting input current of the solar batter array simulator according to power requirement of the electronic load, and managing the charging / discharging of the storage battery pack simulator; the solar battery array simulator is used for simulating input power of a solar battery array ina light period; the storage battery pack simulator is used for realizing charging and discharging functions of a storage battery pack in an earth shadow period; and the electronic load is used for simulating on-satellite electricity loads. The method comprises the following steps of: 1) establishing an acceleration model; 2) carrying out electric performance test before acceleration; 3) carryingout a high-temperature life test; 4) carrying out electric performance test after the acceleration; and 5) analyzing the test result.

The invention is concerned with the component encoder and the decoding method, the initial condition set of the register is zero state in the component encoder, the component encoder uses the outputting feedback bit from the self register to decode at the control of the controlling switch after finish the decode for each decoding block, in order to ensure the final condition and the initial condition of the register are consistent after decode. The method is concerned with the double inputting Turbo encoder and the encoding method using the above component encoder. The invention can avoid the two time encoding process in the existing encoder, reduce computation quantity of encode and the coding delay, and reduce the decoding computation quantity of the receiving terminal.

The invention relates to a cylinder sleeve fatigue test device. An annular sunk groove (13) and an annular sealing protrusion (14) used for supporting a cylinder sleeve (3) are arranged on a bearing cylinder body (1), a counter bore matched with a combined cylinder cover (2) is formed in an upper opening of the cylinder body, an oil inlet port and a sensor port are formed in an oil inlet (6) and an upper port of a pressure monitoring hole (7) in the cylinder body respectively, the cylinder sleeve (3) is arranged in the bearing cylinder body (1), the combined cylinder cover (2) is arranged in the counter bore of the combined cylinder cover (2) and the cylinder sleeve (3) in a sealing sleeved mode, a cylinder cushion (4) is arranged at the position where the combined cylinder cover (2) is connected with the cylinder sleeve (3), and an upper edge opening of the cylinder sleeve (3) and a simulation combustor cavity form a simulation combustor (8). According to the cylinder sleeve fatigue test device, sealing hidden troubles in the cylinder body are eliminated, stability of the test process is improved, the adjusting range of the pressure in the cylinder body is enlarged, and a cylinder sleeve fatigue examination and a fault reappearance test are facilitated.

The invention discloses a novel power microcomputer operation anti-error system and an operation method thereof. The system comprises a background anti-error host, a field terminal, switch cabinet spacing anti-error covers, and a network system. The panels of the switch cabinet spacing anti-error covers are provided with operation holes. Each switch cabinet spacing anti-error cover is provided with a spacing anti-error control device consisting of an operation hole locking device and an spacing guide indicating lamp module, wherein the operation hole locking device is an operation hole locking panel, and the operation hole locking panel is arranged at the operation hole side of the switch cabinet spacing anti-error cover. The operation method comprises the following steps: the background anti-error host makes out a ticket and sends a short message to the mobile phone of a corresponding person; and the corresponding person carries out operation in order according to the operation content on the display screen of the field terminal. By combining the operation anti-error system and the operation method with the network system, real-time state alignment is realized, real-time operation result transmission is ensured, integrated anti-error intelligent management and collaborative operation in the whole process of power distribution operation are realized, and possible misoperations in all links of power supply and distribution are effectively eliminated.

The invention discloses an in-situ calibration device and method for a field torque. The in-situ calibration device comprises an equal armed lever, two radial bearings, two pure torque radial supporting mechanisms capable of moving opposite and a controllable hydraulic jacking mechanism; the equal armed lever is connected with the pure torque radial supporting mechanisms via the radial bearings and is coaxial with the two pure torque radial supporting mechanisms, a standard torque sensor is arranged between the two pure torque radial supporting mechanisms coaxially, one end of each flexible connecting mechanism is connected with the pure torque radial supporting mechanism via the radial bearing, while the other end is coaxially connected with a field torque measuring end; the controllable hydraulic jacking mechanism is arranged on a bottom plate below any of two arms of the equal armed lever and applies an upward force to the equal armed lever, the torque is transferred to the standard torque sensor, and then the torque value is displayed via a torque measuring instrument. The in-situ calibration device, which is provided with the equal armed lever, the controllable hydraulic jacking mechanism and the pure torque radial supporting mechanisms, is simple in structure and accurate in test data, and can quickly realize the traceability of a measured value.

The invention provides an on-site corrosion detecting method and device. The method comprises the following steps: analyzing a corrosion environment in a position to be detected; collecting material and state information of a device in the position to be detected; selecting a sample type and a coupon rack type, and loading the selected sample on the coupon rack; arranging the loaded coupon rack in the position to be detected, and performing on-site implementation; and taking down the sample from the coupon rack, and performing corrosion evaluation on the sample. The invention has the following advantages: the device is simple in structure and convenient to assemble; multiple samples with different material and tissue states can be hung at one time; the fluid flow state on the surface of the sample conforms to the environment; the device is light in weight, and can not cause an obvious stress to a wall; and the device is convenient to mount and demount.

The invention relates to the technical field of wafer processing, in particular to a processing jig. A wafer processing jig comprises a bearing platform, wherein an adsorption mechanism is arranged on the bearing platform. The adsorption mechanism comprises a plurality of adjustment adsorption holes formed in the middle of the bearing platform and a plurality of fixing adsorption holes formed in the periphery of the bearing platform. The fixing adsorption holes are formed in the bearing platform in a circular ring shape, and the adjustment adsorption holes are formed in inner sides of the fixing adsorption holes. The fixing adsorption holes are connected with a fixed air suction device through an air channel. The adjustment adsorption holes are connected with an adjustment air suction device through an air channel. Adsorption air pressure of the adsorption holes is adjusted through adjustment of the air suction devices. The wafer processing jig solves clamping and fixing problems of a wafer in processing and proofing stages, and guarantees that the state of a middle area and the state of the periphery of the wafer are consistent so that processing quality is uniform.

The invention relates to a semi-physical high-speed simulation method based on the smooth switching of a state. The method comprises the following steps: S1: according to a purpose of simulation verification, selecting a physical quantity to be revised; S2: judging whether the physical quantity to be revised is a dynamics integration variable or not, if the physical quantity to be revised is the dynamics integration variable, executing S4, and otherwise, executing S3; S3: converting the physical quantity to be revised into a corresponding dynamics integration variable; and S4: through switching control in a certain time range, revising the dynamics integration variable to finish the smooth switching of the state in a semi-physical simulation process. By use of the semi-physical high-speed simulation method, in a semi-physical simulation switching process, real-time / super real-time seamless connection is realized, dynamics continuity is guaranteed, and two states before and after switching are in smooth transition.

The invention relates to a method for restoring state of semiconductor equipment software after restart. The method includes the following steps that: record files containing information of all carriers subordinated to actual equipment modules and information of all wafers in (subordinated to) the carriers are configured according to actual equipment process module attributes recorded in a technique storage unit; in a technical process, record files which record the information of all carriers subordinated to each of actual equipment modules and all wafers in the carriers are associated simultaneously according to the attribute information of all actual equipment modules of reflection technique storage equipment; and if semiconductor equipment software needs to be restarted or to be restored to a certain previous interruption point, a control module receives the record files which are checked by a user at an input interface, and selectively updates the information of the wafer carriers and the wafers in all or part of the modules before restart according to the record files or the state of equipment initialization.

A selection method of transmission equipment business board bus is used in the system with a main and a secondary business control board and a dual bus connection between the main and the secondary business control board and the business board. The method includes the following steps: (a) before each bus selection judgment, the business board judges message received by a backboard about whether relevant units of the main and the secondary control board business processing are ready and preserves the prior status after judgment; (b) in the bus selection judgment course, use the preserved prior status as the basis about whether the main and the secondary control board business processing relevant units received by the backboard bus are ready and the bus selection judgment. The invention can effectively improve the reliability of transmission equipment business board bus selection.

The invention discloses a thermal fatigue test device of a piston. The thermal fatigue test device is composed of a support frame, a non-standard piston tool, a tested piston, branch cooling water pipes, a thermal insulation board, and a main cooling water pipe. With the non-standard piston tool, the mechanical constraint of the tested piston on actual assembling condition is simulated completely;on the basis of cooperation of the cooling pipes, the thermal insulation board, and an external heating device, the temperature field of the tested piston on the actual working condition is simulatedcompletely. Thermal fatigue testing of pistons with different numbers is realized by flexible cooperation of the support frame and the tool. With the thermal fatigue test device disclosed by the invention, the actual assembling condition and cooling environment of the piston can be simulated fully; the arrangement condition can be adjusted flexibly based on the number of the tested pistons; the progress of the thermal fatigue test of the piston is controlled reasonably; the usage energy is optimized; and the credibility of the thermal fatigue test result of the piston is enhanced substantially.

Some embodiments provide a novel network control system that provides publications for managing different slices (e.g., logical and / or physical entities) of a network. The publications are published from publisher controllers in the network control system to subscriber controllers. The network control system uses publications with generation numbers and buffered subscribers to implement the fixed points in order to help maintain a consistent network state. Buffered subscribers buffer the inputs received from a publisher in case the publisher becomes unavailable. Rather than deleting all of the output state that is based on the published inputs, the buffered subscriber allows the subscriber to maintain the network state until an explicit change to the state is received at the subscriber from a publisher (e.g., a restarted publisher, a backup publisher, etc.).