33results about How to "Efficient data access" patented technology

Embodiments of the invention exploit the complementary and correlated information that is available across multiple channels of digital multimedia distribution, in order to ensure more efficient multimedia data access. One embodiment of the invention, directed to a method for generating a response to a specified request for information, is associated with multiple channels that are each adapted to carry and disseminate data content. The method comprises extracting data elements from each of the multiple channels, wherein each extracted data element pertains to one dimension of a plurality of correlation related dimensions. The method further comprises assigning each extracted data element to one of a plurality of correlation sets, wherein all the extracted data elements assigned to a particular set pertain to the same dimension, and each set is assigned data elements extracted from two or more different channels. Two or more of the correlation sets associated with the request are then selected, and the data content thereof is used to generate the response to the specified request.

Aspects for achieving efficient data access to data elements in a relational database management system are provided. In a computer-implemented method aspect, the efficient data access occurs by establishing a hash table for data elements of a database in a predetermined continuous space of allocated storage, and optimizing utilization of the hash table during database query operations through linear hashing, wherein extension of the hash table occurs automatically to increase a number of pages in the hash table without discernible interruptions of data access to the data elements.

A system, a controller, and a method for data storage are provided. The system includes a first storage unit, a second storage unit, and a controller. The first storage unit comprises a single-layer structure for storing data, and the second storage unit comprises a multi-layer structure for storing data. The controller is coupled to the first storage unit, the second storage unit, and a host and controls the host to set the first storage unit as a master storage device and set the second storage unit as a slave storage device. As a result, the host can recognize the first storage unit and the second storage unit as two independent storage devices for storing data. Thereby, the data storage process can be simplified.

A method and system that combines efficient caching and buffering to provide a network file system, that may utilize data stored in one or more compressed image files of sequentially arranged byte stream data. As an application requests file opens and file reads of a file system, one or more drivers convert the block requests into HTTP: byte range requests or the like in order to retrieve the data from a remote server. As the data is received, it is reconverted and adjusted to match the application's request. Sequential block access patterns can be detected and used to request additional data in a single request, in anticipation of future block requests, thereby increasing efficiency. Local caching of received data, including caching after uncompressing received data that was compressed, further increases efficiency. A compressed file system format optimized for sequential access is also described that when used, further improves the efficient data access.

Certain example embodiments relate to using Complex Event Processing (CEP) techniques for statistical analysis of cache behavior and parameters, e.g., in connection with large, potentially heterogeneous data sets (e.g., “Big Data”). A dedicated stream mining operator registers a listener to a cache and receives notifications on cache operations. For selected element attributes, a first model estimates the probability density functions of the attribute values, delivering well-defined estimates of the attribute value distributions. A second model analyzes the time elements stay in the cache (“validity”). Validity is combined with the attribute value distribution. A meaningful analysis model (Cache Element Model) can be derived by combining additional summary statistics for the validity with the attribute value distribution, describing how long elements stay in the cache for attribute values of a specific region, and how the values are distributed. It may be used to inform administrative tasks such as, optimization of cache parameters.

The invention discloses a data access method and device of a distributed file system. The method includes that the distributed file system receives an access request sent by a tenant; configuration information which is prestored and corresponds to the tenant is searched in the distributed file system according to the access request, and the configuration information includes data storage configuration of the tenant; and the distributed file system achieves data to enable the tenant to access to tenant data according to the configuration information. By means of the data access method and device of the distributed file system, the access request sent by the tenant can be received by the distributed file system, then the configuration information which is prestored and corresponds to the tenant is searched in the distributed file system according to the access request, access of the tenant to data of the tenant can be achieved, data access is performed according to the configuration information of the tenant so that problems caused by coupling degree of data storage are solved, data sharing can be conveniently achieved, the safety of the tenant data can be further improved, and efficient data access can be achieved.

The invention relates to a method and system for implementing a data sandbox based on mongoDB. The method comprises the steps that a server receives a data sandbox creation application sent by a user side; the server creates an independent data sandbox on the mongoDB according to the application; the server stores the data sandbox and manages operation resource quotas; the server leads data warehouse data or external data into the data sandbox and performs data processing in a data sandbox environment; and after the data processing, the server leads processed data out of the data sandbox, destroys the data sandbox and recycles system resources. An elastic data operating environment is provided for users, and the request on local installation and transaction database management is omitted; through an isolated environment, data risks caused by misoperation by users are effectively avoided, the conditions that a data warehouse is retarded due to a centralized mode are reduced, environmental availability is improved, and efficient data access is achieved while the overhead of the data warehouse is reduced.

A hierarchical ring architecture is constructed with on-chip networks. The on-chip network includes two type-0 ring nodes and two type-1 ring nodes. The present invention provides multiple data transfer in parallel between multiple processor cores or multiple function units and register banks with dynamic configuration. The present invention thus obtains a low control complexity, an optimized local bandwidth, an optimized remote node path, a low routing complexity and a simplified circuit.

Systems and methods are provided for storing a dataset having a hierarchical data structure in a database. In one implementation, a data processing system includes a data dictionary for storing data that describes predefined hierarchical data structures, wherein each data structure includes a plurality of data fields that have a unique field name and at least one field attribute. The data processing system also includes a volatile storage that stores a dataset having a unique dataset name. The dataset is an instance of one of the predetermined hierarchical data structures. A serializer is provided that converts the dataset into a data string. An access key is generated for the data string. Moreover, the data processing system includes a non-volatile storage that stores a database table and database export means for storing the string in the database table using the access key that is assigned to the dataset name.

A computing device performs parallel computations using a set of thread processing units and a memory shuffle engine. The memory shuffle engine includes a register array to store an array of data elements retrieved from a memory buffer, and an array of input selectors. According to a first control signal, each input selector transfers at least a first data element from a corresponding subset of the register array, which is coupled to the input selector via input lines, to one or more corresponding thread processing units. According to a second control signal, each input selector transfers at least a second data element from another subset of the register array, which is coupled to another input selector via other input lines, to the one or more corresponding thread processing units.

The invention provides a service processing method and device and a server. The service processing method includes the steps of receiving a service access request; determining a range of to-be-accessed data of the service access request according to the service access request; comparing the range of the to-be-accessed data with a range of data saved by a production database; if the range of the to-be-accessed data is included in the range of the data saved by the production database, distributing the service access request to the production database. By means of the service processing method and device and the server, different service access requests can access different databases, and the fluency of service access is improved; by defining the range of the data saved in the production database, the amount of the data in the production database can be effectively controlled, the efficient data access of the production database is ensured, and the efficiency of executing services is improved.

Data Brick is a state of the art solution to access the data through high speed data access mechanism that is exceptionally fast and is associated with low CPU consumption cost. The Data Brick stores relatively static reference data in the form of a programming language Load Module. The Load module contains the data can be launched into the application program memory and this data can be accessed very efficiently in a programming language program. Static application data that is accessed by multiple applications in a mainframe Batch environment is a prime candidate for the Data Brick.

The present invention provides a nonvolatile memory having a plurality of memory banks having a plurality of erasable and programmable nonvolatile memory cells and capable of memory operation independently respectively. The nonvolatile memory is capable of sequentially receiving write data and a write start command by the number of write processing regions after a write instruction command, a write start address and the number of the write processing regions with the write start address as a start point are inputted, latching write data for one write processing region in one memory bank and thereafter starting writing to each memory cell in response to the write start command, and making parallel a latch operation at one memory bank and writing to each memory cell at other memory banks.

The invention provides a data migration method and device, a computer readable storage medium and electronic equipment, and relates to the technical field of data management. The data migration method comprises the following steps: receiving a data migration instruction; determining a data migration direction between each existing original cache data fragment and each newly deployed target cache data fragment in the cache data cluster; according to the data migration instruction, migrating to-be-migrated data in the original cache data fragment to the target cache data fragment according to the data migration direction, and maintaining a migration state in the original cache data fragment; and sending a migration result recorded in the migration state to a migration management module. According to the method and the device, the cache system can be expanded through data migration on the premise of not stopping service, the migration process optimizes the management of the state of the data to be migrated, and the migration can be restarted from the interruption position, so that the data migration process is more convenient and efficient.

A method and system that combines efficient caching and buffering to provide a network file system, that may utilize data stored in one or more compressed image files of sequentially arranged byte stream data. As an application requests file opens and file reads of a file system, one or more drivers convert the block requests into HTTP: byte range requests or the like in order to retrieve the data from a remote server. As the data is received, it is reconverted and adjusted to match the application's request. Sequential block access patterns can be detected and used to request additional data in a single request, in anticipation of future block requests, thereby increasing efficiency. Local caching of received data, including caching after uncompressing received data that was compressed, further increases efficiency. A compressed file system format optimized for sequential access is also described that when used, further improves the efficient data access.

A sensor system detects objects in an environment ahead of a vehicle. The environment is represented by a predetermined fixed number of position points in an environment model. Initially and when no objects are detected, the position points may be distributed stochastically over the detection area of the sensor system. When objects are detected, the position points are re-distributed based on the detected objects, e.g. with a higher density of position points to represent the detected objects. Because the total number of position points is a predefined fixed number that remains constant, the processing, storage and transmission of the environment model involves a constant data volume and efficient use of memory and transmission bandwidth.

The invention provides a method for communication between heterogeneous systems. The method includes the steps of receiving a communication service request from a first heterogeneous system; parsing the communication service request to generate service information metadata corresponding to the communication service request; generating a corresponding service execution instance according to the service information metadata; running the service execution instance to invoke a system service corresponding to the communication service request in a second heterogeneous system, and generating an instance execution result; and returning the instance execution result to the first heterogeneous system to complete the communication between the first heterogeneous system and the second heterogeneous system. Correspondingly, the invention also provides a device for communication between the heterogeneous systems, a computer device and a computer-readable storage medium. Through the technical scheme, the development efficiency of the systems can be effectively improved, and the development cost and maintenance cost of the systems can be reduced.

An adjustable optical actuator with tilting function is provided, including two focusing coils, a tilting coil, and two tracking coils. A lens holder is hanged on a yoke base. The focusing coils are placed on the two sides of the lens holder, and the current in the focusing coils is perpendicular to the optical axis of the lens. The tilting coil is placed on the lens holder, and the current in the tilting coil is perpendicular to the optical axis of the lens. The tracking coils are placed on the lens holder, and the current in the tracking coils is parallel to the optical axis of the lens. Four magnets are placed on the yoke base so that the four magnets are placed at the four corners of the lens holder to generate a closed magnetic-flux. The lens holder, focusing coils, tilting coil, and tracking coils are within the scope of the magnetic-flux generated by the four magnets so that the actuator has the functions of focusing, tracking and tilting for adjustment.

The invention discloses a data access method and device of a distributed file system. The method includes that the distributed file system receives an access request sent by a tenant; configuration information which is prestored and corresponds to the tenant is searched in the distributed file system according to the access request, and the configuration information includes data storage configuration of the tenant; and the distributed file system achieves data to enable the tenant to access to tenant data according to the configuration information. By means of the data access method and device of the distributed file system, the access request sent by the tenant can be received by the distributed file system, then the configuration information which is prestored and corresponds to the tenant is searched in the distributed file system according to the access request, access of the tenant to data of the tenant can be achieved, data access is performed according to the configuration information of the tenant so that problems caused by coupling degree of data storage are solved, data sharing can be conveniently achieved, the safety of the tenant data can be further improved, and efficient data access can be achieved.

An E-commerce system comprises a web site subsystem, an OLAP subsystem and a personalization subsystem. In a web site subsystem, Internet users can access the web site information interactively through web browser. The web site accesses the web service database according to different Internet user operation. By using personalized database, different users can access the web site according to theirown personality characteristics. The system can be used to obtain the interest of users by answering questions, moreover, the information of the user browsing the page and the feedback information ofthe recommendation page are combined to update the change of the user interests, which can quickly and accurately find the user interests, and is cross-platform, easy to promote, and conducive to thetransformation of the enterprise from the centralized environment to the distributed open environment.

Systems and methods are provided for storing a dataset having a hierarchical data structure in a database. In one implementation, a data processing system includes a data dictionary for storing data that describes predefined hierarchical data structures, wherein each data structure includes a plurality of data fields that have a unique field name and at least one field attribute. The data processing system also includes a volatile storage that stores a dataset having a unique dataset name. The dataset is an instance of one of the predetermined hierarchical data structures. A serializer is provided that converts the dataset into a data string. An access key is generated for the data string. Moreover, the data processing system includes a non-volatile storage that stores a database table and database export means for storing the string in the database table using the access key that is assigned to the dataset name.

The invention relates to an ultrahigh-voltage direct-current transmission simulation training method and device. A simulation training service module acquires and stores SCADA real-time data; the simulation training service module receives an issued operation command, and then transmits the operation command and measurement point real-time data to a power system real-time model and a control protection model built with corresponding tools of Matlab, through corresponding access interfaces; the power system real-time model runs in an XPC real-time operating system; the models run dynamically and output results to the simulation training service module which uploads the results. The ultrahigh-voltage direct-current transmission power system model is built with the Matlab; after being complied, the power model runs in the XPC real-time operating system environment, and the model has response timeliness and high reliability; computing results are highly consistent to field actual operating system data in terms of both time and space; efficient data interaction is achieved through a packaged organic access interface; development efficiency is improved, development cost is saved, and practical value is good.

The invention discloses a universal game data interface layer. The universal game data interface layer comprises a basic definition module, a data operation module, a database operation module and a database operation tool module, wherein the basic definition module comprises a data layer interface type and a comment definition type, the data layer interface type is used for the data operation by a user, the comment definition type is used for the comment identification of the user on a defined database type, and comments include a caching comment and a lasting comment; the database operation tool module comprises a data scanning type and a data registration type; the data operation module comprises a data operation realizing abstract interface and a data operation realizing type, the data operation realizing type is used for realizing a user data operation instruction, and the data operation realizing abstract interface is used for the data operation with or without cache according to the comments; the database operation module comprises a database connection type and a database object base type. The universal game data interface layer has the advantages that the interface layer can provide simple and efficient data accessing, and the cache of a third party can be integrated.

Data Brick is a state of the art solution to access the data through high speed data access mechanism that is exceptionally fast and is associated with low CPU consumption cost. The Data Brick stores relatively static reference data in the form of a programming language Load Module. The Load module contains the data can be launched into the application program memory and this data can be accessed very efficiently in a programming language program. Static application data that is accessed by multiple applications in a mainframe Batch environment is a prime candidate for the Data Brick.

The invention provides a method for communication between heterogeneous systems. The method includes the steps of receiving a communication service request from a first heterogeneous system; parsing the communication service request to generate service information metadata corresponding to the communication service request; generating a corresponding service execution instance according to the service information metadata; running the service execution instance to invoke a system service corresponding to the communication service request in a second heterogeneous system, and generating an instance execution result; and returning the instance execution result to the first heterogeneous system to complete the communication between the first heterogeneous system and the second heterogeneous system. Correspondingly, the invention also provides a device for communication between the heterogeneous systems, a computer device and a computer-readable storage medium. Through the technical scheme, the development efficiency of the systems can be effectively improved, and the development cost and maintenance cost of the systems can be reduced.

An adjustable optical actuator with tilting function is provided, including two focusing coils, a tilting coil, and two tracking coils. A lens holder is hanged on a yoke base. The focusing coils are placed on the two sides of the lens holder, and the current in the focusing coils is perpendicular to the optical axis of the lens. The tilting coil is placed on the lens holder, and the current in the tilting coil is perpendicular to the optical axis of the lens. The tracking coils are placed on the lens holder, and the current in the tracking coils is parallel to the optical axis of the lens. Four magnets are placed on the yoke base so that the four magnets are placed at the four corners of the lens holder to generate a closed magnetic-flux. The lens holder, focusing coils, tilting coil, and tracking coils are within the scope of the magnetic-flux generated by the four magnets so that the actuator has the functions of focusing, tracking and tilting for adjustment.

The present disclosure provides a load balancing method and device for a multi-control storage system. The backplane is used to package multiple ports to connect each controller, so that each controller can realize fast information transmission through the lines inside the backplane, and each controller can obtain the status of other controllers in real time. Designate the owning controller for each logical volume and use the internal information transmission channel of the backplane to synchronize the ownership information among the various controllers. When one of the controllers receives a data read and write request for a logical volume from the client, it determines the ownership controller of the logical volume through the ownership information, and hands over the business to the corresponding ownership controller. Data access can thereby be efficiently performed using a plurality of controllers.

An OLAP system for an electronic commerce system comprises an enterprise server, an OLAP server and a client, wherein the enterprise server, the OLAP server and the client become a three-layer structure of the OLAP system, and the OLAP system also comprises a basic database and a data warehouse, wherein the enterprise server, the OLAP server and the client are connected with the data warehouse; The application logic, GUI and DBMS are strictly separated in the three-tier architecture. Complex application logic is not distributed on the client, but centralized on the analysis server, which provides efficient data access and analysis preprocessing. The combination of WEB and OLAP can save the cost of development, directly using WEB Browser does not need to develop special software, and cross-platform, easy to promote, conducive to the enterprise from the centralized environment to the distributed open environment transformation.

The present invention is directed to an application programming interface. More specifically, the present invention relates to an application programming interface designed for handling interaction between an audio / video controller and an audio / video file system. In one exemplary embodiment, the application programming interface includes a number of function calls which direct the audio / video file system to perform a variety of functions. In addition, the application programming interface permits devices capable of handling different types of data, such as isochronous and asynchronous data, to communicate with the audio / video file system.