188 results about "Embedded database" patented technology

The present invention relates to an on line 3D visualization method and system of natural resource data. The method mainly includes a step of natural resource data organization and storage and a step of natural resource data processing and 3D visualization. The step of natural resource data organization and storage includes: according to natural resource data characteristics and service characteristics, dividing data types, and making the natural resource data as tile image data formed by a plurality of tiles by adopting a pyramid model, then encoding each tile, and establishing a tile data set based on an embedded database technology, storing the tile data set in database, and establishing a quadtree index of space for each tile. The step of natural resource data processing and 3D visualization includes site and position 3D visualization and natural environment object dynamic 3D visualization. The method achieves real time on line 3D rendering display for all kinds of natural resources and geographic space information data in a high-performance 3D visualization environment.

A method and system is provided that enables OLE DB (Object Linking and Embedded Database) applications to access embedded table-structured relationships in hierarchical databases as Normalized relational tables.

The present invention provides a network device having an internal configuration database process for managing configuration of internal resources within the network device in response to configuration input provided by an external Network Management System (NMS) process. In one aspect, the invention provides a communications system having a network device, and a computer system. The network device includes an internal configuration database process for managing configuration of internal resources within the device. The computer system includes an input mechanism for receiving configuration input data from a network manager, and an NMS process for responding to the configuration input data and for sending configuration data to the configuration database process within the network device, where the configuration database process within the network device configures internal resources of the network device in response to the configuration data received from the NMS.

A storage mamagement method of embedded database,includes that: (1) the storage strategy of data in the memory is that: if logic structure accords with physical structure, the structure is into a divided system area, a main storage database area, a user working area, a log area and a preformed area; the storage strategy of data in the external memory is that: logic structure is divided into a database table, a segment and a database block; physical structure includes a physical file and a physical block; (2) the physical file organization of database is that: a data dictionary is placed at the heading, a user table since then; (3) the memory management of data dictionaryin the external memory is that: the described information of physical file is stored in the file header, denotative definition kind and attribute definition kind adopt a three section type storage form; data dictionary adopt a page type memory management method in the memory; (4) a permanent memory data is stored using T tree and a a permanent external memory data is stored using B+ tree; data and its index are managed using a extended segment memory management method. The invention improves the utilization rate of memory space, and accelerate the speed of data to access.

The invention relates to a method for deleting duplicated data in a file system in real time, and belongs to the technical field of computer data storage. In a file system establishment stage, a file metadata table, a data block index and a file constitution table are set in an embedded database; and in a file system operation stage, operating commands initiated to the file system by applications are received and responded through a file system driver, and include establishing a new file, writing data to an existing file, reading data from the existing file and deleting the existing data. The method simultaneously supports fixed-length and variable-length file blocking methods, and can delete the duplicated data in the file system in real time, save storage space and improve the utilization efficiency of storage equipment; and the process of deleting the duplicated data is completely transparent to the applications and a user, the file operation of various conventional applications is seamlessly compatible, and almost all negative effects on the user experience are avoided.

The invention relates to a multi-protocol data acquisition gateway for an intelligent building and a data acquisition method thereof, and relates to the technical field of networks. The multi-protocol data acquisition gateway solves the technical problems of complex structure, simple function, low reliability and few compatible meters in a data acquisition unit system. The gateway comprises a CPU module and a network communication module, wherein the network communication module is connected with the CPU module through a bus and provides a network interface. The gateway also comprises different types of data acquisition modules and a plurality of data service modules, wherein each data acquisition module is connected with the CPU module through a bus, and the different types of data acquisition modules provide different field device interfaces; the plurality of data service modules provide custom data for users through a network communication interface; and the data acquisition modules and the data service modules are respectively connected with an embedded database, and access data through the embedded database. The multi-protocol data acquisition gateway and the data acquisition method have the characteristics of capacity of acquiring different types of data, realization of real-time data processing simultaneously, and convenient on-site supervision and analysis.

The invention discloses a mobile terminal based on a data packet and a method for synchronizing business system data, belongs to the technical field of mobile application information processing, and is applied to two-way data synchronization between mobile terminal application and a business system. According to the method, rules of inquiring, creating, updating and deleting the record of a data table are defined through a data synchronization rule defining file; a data synchronization rule description file is used for generating a class data packet and backfilling the data; based on the data synchronization rule defining file, an embedded database file can be generated directly from a business system database or through service inquiry data of the business system, and is downloaded by a mobile terminal to be used, and incremental data altered by the mobile terminal is directly written into a business database according to corresponding synchronization rule, or the service is transferred to finish data backfilling. According to the method, the data packet generating and backfilling rule is described through the synchronization rule; and efficient data packet generation and accurate and efficient data backfilling are achieved.

The invention discloses a processing method for large-scale real-time concurrent charger monitoring data. The whole data processing flow is divided into multistage operations including reception, distribution, analysis, storage, transmission and the like through a multistage buffer mechanism; CAN bus protocols are converted into CAN data messages to be transmitted; at the distribution stage, different types of CAN data messages are distinguished and subjected to parallel analysis through different processing threads; application layer data objects are stored in an embedded database to improve the reliability of data processing. The processing method for the large-scale real-time concurrent charger monitoring data realizes real-time acquisition and processing of large-scale concurrent monitoring data and can be used for supporting construction of a monitoring system in a large-scale charging station.

Apparatus is provided for an electronic vehicle storage system. The apparatus includes a data storage device configured to store multimedia files, a wireless transceiver configured to transfer multimedia files, and a controller coupled to the wireless transceiver, data storage device, and a vehicle electrical infrastructure. The data storage device has an embedded database containing a first list of multimedia files. The controller is configured to communicate with an external computing device via the wireless transceiver. The external computing device has a second list of multimedia files. The controller is further configured to synchronize the first list of multimedia files with the second list of multimedia files.

The present invention discloses a data backup system for an embedded database, and a method for backing up and restoring data. A backup database storage region and two check code storage spaces are arranged on system hardware storage equipment. A database backup and storage module is also arranged in the data backup system to carry out reading and writing operation on a main database storage region, the backup database storage region and the check code storage spaces and compute, store and judge the check codes. The system achieves a 1+1 protecting function on the database through adding the database backup and storage module in a software layer, reserving data backup space with the same size as that of database space and respectively providing storage space used for storing the check codes for the main database and the backup database simultaneously, thereby guaranteeing that the system can restore the data from the other database when the database has abnormities.

A system for real-time interactive presentation, the system communicatively coupled to a network for access by a plurality of user devices comprising a database to store information relating to a plurality of presentations, at least one processor executing instructions stored in non-transitory memory that cause the processor to: receive a presentation in a first format from a presenter user device, convert the presentation to an HTML5 format, embed at least one HMTL5 interactive object into the converted presentation, store the converted presentation including the at least one HTML5 interactive embedded object in the database, upon a request received from a first user device for the converted presentation, transmit the converted presentation including the at least one HTML5 interactive embedded object to the first user device, wherein the presentation including the at least one HTML5 interactive embedded object is rendered for viewing on a display of the first user device, and receive and store first user input data from the first user device in the database when a first user has interacted with the at least one HTML5 interactive embedded object.

The invention relates to a method and a system for generating, storing and managing graphical data and structured data among multiple users. The generation and storage method comprises the following steps of: setting two or more kinds of name card graphical templates in intelligent mobile equipment; selecting a template according to the requirement of a user, inputting personal information into a personal information display part, and selecting a graph stored in the intelligent mobile equipment as a logo in an enterprise logo part by the user; generating an electronic name card for the user, storing the electronic name card in an embedded database of the intelligent mobile equipment in the form of the structured data and the graphical data, generating index values which correspond to the structured data and the graphical data one to one, and storing the index values; and uploading information in the electronic name card to a storage server to make information in the intelligent mobile equipment and the information in the storage server synchronized. By the method, the name card and multiple kinds of information are digitally stored, so that paper resources are saved, and contact information can be conveniently searched according to the generated structured data.

The invention discloses a low-voltage power line bandwidth carrier concentrator, which consists of a hardware structure and a software structure, wherein the hardware structure consists of a micro controller unit, a data storage unit, an electric quantity storage unit, a power line network bridge communication unit, a GPRS communication unit and a power supply module unit; and the software structure consists of a system scheduling module, a power line network bridge module, an RS485 driving module, a GPRS wireless communication module, and an embedded database module. In the invention, embedded design is adopted, embedded micro controller technology, bandwidth power line carrier technology, GPRS wireless communication technology, embedded database technology, multipath I/O multiplexing technology and the like are integrated, and the GPRS communication module can receive a remote meter reading instruction transmitted by a management center on site, read user electric quantity data, and sends user electric quantity data to the management center through the GPRS communication module. The concentrator is simple in operation and convenient to use and has a high application value and a promising application prospect in the technical field of remote meter reading of a power system.

The invention discloses a method and device for restoring data in an embedded database. The method comprises the following steps: judging whether the data files and the data file structures in a master database and a backup database are wrong; updating the data files in the master database into the data files in the backup database when the data files and/or the data file structures in the master database are wrong while the data files and the data file structures in the backup database are correct; and updating the data files in the backup database into the data files in the master database when the data files and the data file structures in the master database are correct while the data files and/or the data file structures in the backup database are wrong. The method and device provided by the invention restore the data in the embedded database with wrong data files and/or data file structures, thus saving the storage resources in the embedded system and improving the fault tolerance of the databases in the embedded system.

The invention discloses a SQLite-based embedded database synchronization method. The method comprises three stages of system initialization, system startup and increment synchronization. The method is established in a database of a device; a special device for handling a synchronization business does not need to be additionally added in the whole process, so that the cost is reduced; and the characteristics of an embedded system are met. Meanwhile, the database used in the method is SQLite, occupies few resources, is good in performance and free from management cost, meets cost control demand of an embedded device, and ensures synchronization reliability and stability; and the data loss caused by network transmission is prevented through database operation logs, and synchronized database tables can be flexibly configured according to actual needs.

The invention relates to a method of data exchange between an embedded device and a remote database, belonging to the technical field of data communications. The method comprises the following steps: the embedded device generates a request for accessing the remote database, and processes the request for accessing the remote database into an SQL (structured query language) instruction packet with a preset format; a middleware establishes the communication connection, issues the request for connecting a database server and performs the required access operation according to an instruction extracted from the SQL instruction packet; the middleware receives the operation result which is returned by the database, and transmits the packaged XML (extensible makeup language) document to the embedded device; and the embedded device receives and stores the packaged XML data. The XML is taken as a medium in the method of the data exchange between the embedded system and the remote database provided by the invention, the data exchange is finished under the condition of not influencing the data information of the remote database, thus an embedded database user can conveniently interact the datawith the remote database, and the cross-platform seamless connection between heterogeneous systems is realized.

The invention provides a data storage method for improving instantaneity of an embedded type database. In the data storage method, a database file storage space is divided into four parts sequentially comprising database header information, an object index, a bitmap page and other object occupation spaces, wherein the object index is an object array with an object identification as a subscript. Through an object storage technology combined with an object bitmap, storage efficiency of the database is increased. Through a manner of accessing a database object by the object bitmap, the array can be used during realizing so that access speed of metadata is increased. Especially, under an application scene with relatively smaller database volume, access speed can be greatly increased by adopting the data storage method.

The invention discloses a multi-language learning system. The system at least comprises a storage unit used for storing contents of learning materials, such as language pronunciation rule information, dictionary library information, course information, and the like and an embedded data base device of a voice database, a module for generating a learning target, a translation unit used for translation among multi-languages, a voice drive engine unit, an operation interface used for providing users with input interface instructions, a functional module used for inquiring words, maintaining dictionary, drafting course, drafting, learning and testing learning schedules and training listening, and an output module for outputting a processing result of instructions input in an interface. The invention can provide a divergent learning mode of freely setting mother languages and freely learning languages for users, thereby enhancing the learning interest and efficiency and achieving the purpose of enabling the users to like learning.

The on-line upgrade control method for embedded database comprises: applying new memory area to generate upgraded database, and switching the current area address recorded in kernel base site into the new one. This invention can keep service continuality by on-line upgrade.

The present invention is applicable to the field of database technologies, and provides a data processing method and apparatus based on an embedded database. The method comprises the following steps: sharding a source database to generate at least two new databases; encapsulating data operation syntax of the new databases to generate a corresponding operational function; and enabling a thread pool to make a response to calling of the operational function. According to the present invention, the sharding technology is used to segmenting an embedded database SQlite into at least two databases, and in the mean time a thread pool is used to manage operational calling of multiple threads to the database, such that the entire database is not locked when a user's APP performs large data-volume read and write operations on a form in the database. In addition, the user can also perform normal read and write operations on the other forms in the database, thereby preventing the cases where the APP occupies much memory, the CPU consumption is great, and the mobile phone produces too much heat.

The invention discloses a searching and storing method for an embedded database. When an embedded system is under an off-line mode, the method comprises the following steps: external high-speed equipment is used for data organization and storage, a data file is set up and the recording is kept, an index file is kept, index information is kept in an AVL tree node, and finally, a database file is downloaded to embedded equipment for use. When the embedded system is under the off-line mode, the method comprises the following steps: searching AVL tree in the index file through keywords, obtaining the index information, so as to obtain the recording of the date file, or insert newly built tree node into an AVL tree, and keep the index information and the recording. The method provided by the invention fully uses optimization process of the external high-speed equipment according to the characteristics of the resource of date and uses the technologies such as a hash table and AVL three for data organization and storage, and the method provided by the invention has the benefits of less resource consumption and high searching efficiency, and can be used in embedded systems with limited resources.

The invention relates to the technical field of on-line monitoring, in particular to a monitoring on-line data model mapping method based on IEC 61850. Through the method that an IEC 61850 model and monitoring device plant protocol models are mapped, communication protocol conversion is completed, accessing, storing and transferring of transformer substation on-site on-line monitoring device monitoring data to an integrated monitoring unit are achieved, standard accessing of on-line monitoring data to a station end monitoring unit is completed; according to the on-line monitoring data model mapping method, on the basis that data access interface specifications of monitoring devices of plants are standardized, the mapping method with an event as a center based on an embedded database is used. According to the method, the mapping process of a monitoring data model of a traditional on-line monitoring device to the IEC 61850 data model is completed, efficient unified management of various monitoring devices is achieved, and accordingly working efficiency is obviously improved.

The invention relates to a built-in database based high-efficient data deleting and restoring method, which sequentially includes a packet generating step, a packet storing step, a packet damage detecting and converting step, a packet deletion detecting step, a packet relevance comparing step and a packet dynamic monitoring and restoring step. Accordingly, the technical problem that data which are accidentally deleted and lost possibly cannot be restored or are poor in restoring effect in the prior art is solved, the function of instantly thoroughly restoring deleted data caused by misoperation of users is realized and can be kept for a long time by remote support of a server, and risk in data loss of operation of a built-in operation system for users is effectively reduced and convenience is provided for the users.

The embodiment of the invention discloses a database synchronization method, a database synchronization device and a database synchronization system, which relate to the field of embedded systems and aim to solve the problem that a large additional memory space is required by the synchronization of an embedded database in the prior art. The technical scheme provided by the invention comprises the following steps of: when the embedded database is updated, storing update data and a synchronization state identifier corresponding to the update data in the embedded database, wherein the synchronization state identifier is generated according to the updating operation of the update data; and when a synchronization request is received from a background server, transmitting the synchronization state identifier and the update data corresponding to the synchronization state identifier in the embedded database to the background server. The database synchronization method, the database synchronization device and the database synchronization system provided by the embodiment of the invention can be applied to the database synchronization of the embedded system, such as the synchronization of the embedded database in a smart card.