240 results about "Scalable Vector Graphics" patented technology

Techniques for providing information about an object through a graphical interface include providing in a document scalable vector graphics (SVG) statements associated with a graphical representation of the object. The SVG statements are bound to a pointer to a resource that includes information pertaining to the object. The pointer to the resource associated with the SVG statements may then be extracted from the document. Information is then retrieved from the resource based on the pointer. The SVG statements may then be modified based on the information. Then a second graphical representation of the object is presented based on the SVG statements after the modifying. The presentation provides information, or control, or both, for the object.

The invention discloses a method for converting an SCD (Substation Configuration Description) model into a dispatching center CIM (Common Information Model), which is characterized by comprising the following steps of: (1) establishing a complete SCD model; (2) deleting models which are not needed by a primary station and minimizing the SCD model; (3) realizing mapping between the SCD model and the CIM; (4) deriving a single line drawing file in an SVG (Scalable Vector Graphics) format by the CIM and meanwhile establishing an association relationship between an SVG single line drawing and the CIM; (5) after the primary station obtains the CIM and the SVG single line drawing file of a substation, testing validity; and after passing the test, splicing the models and meanwhile establishing a database by the association relationship between the SVG single line drawing and the CIM. The invention can automatically explain real-time data, reduce repetitive time-consuming work which easily causes mistakes, such as manual signal check, and the like, and meet the maintenance requirement of a source terminal directly by adopting a self-describing model established by the substation.

A method and apparatus is provided in which a digital image is transmitted to a presentation projector resource over a wireless transmission medium using a reduced amount of transmission bandwidth by transmitting a subset of the digital image data. The subset image data may be a delta subset that represents those areas of the image that have changed since the previous transmission. The subset image data may also be a scalable vector graphics representation of the subset of the digital image. Header data is provided to further describe the subset image data. A projector discovery logic selects a suitable projector resource based on the order or signal strength of the discovery replies. A wireless image transmission session is established with the selected projector resource during which the projector is unavailable to other devices. The subset image data may be compressed and transmission coordinated with the projector resource so that the data is sent only when it is ready to be received. A wireless to digital visual interface (DVI) graphics engine decompresses and renders the image for output to a DVI connector receptacle. The rendered image is projected by the projector resource in accordance with the associated header data so that the exact image that appears on the image generation device also appears on the projected display.

A system for providing content to a mobile terminal includes a source and a messaging gateway. The source is capable of reformatting content intended for receipt by a terminal, and transferring the reformatted content and an address of the terminal to the messaging gateway. The content can be reformatted in any of a number of different manners, including for example, a vectorized format such as the scalable vector graphics (SVG) format. In response to receiving the reformatted content and address of the terminal, the messaging gateway is capable of signaling the terminal, the signaling including information required to access the reformatted content. As such, the terminal can thereafter send a request to the messaging gateway in response to the messaging gateway signaling the destination client, and thereafter download the reformatted content from the messaging gateway, such as at least partially across a cellular network.

The invention discloses an alternating current and direct current mixed micro power grid system and a control method thereof. The system comprises a photovoltaic module, an inverter, a direct-current converter, a storage battery, a super capacitor, an alternating current load, a direct current load, a direct current bus, an alternating current bus, an SVG (scalable vector graphics) and an APF (active power filter) and the like. The control method comprises the following steps: firstly detecting the voltage and frequency of a main network, if the voltage and the frequency are normal, grid-connected operation is adopted in the system, otherwise, isolated island operation is adopted; if the grid-connected operation is adopted in the system, PQ (performance qualification) control is adopted in the inverter, and constant voltage control is adopted in the direct current converter; if the isolated island operation is adopted in the system, V/F control is adopted in the storage inverter with maximum capacity and a super capacitor, the PQ control is adopted in other inverters, and the constant voltage control is adopted in the direct current converter; and finally, the energy storage capacity is enabled to be within an optimum range under the condition that the system is in normal operation. With the adoption of the alternating current and direct current mixed micro power grid system and the control method thereof, the problem of operation control of the alternating current and direct current mixed micro power grid system is solved, the reliability, safety and economy of the system are improved, and the utilization efficiency of renewable energy sources is improved.

The invention discloses a direct current de-icing device based on a full-bridge modular multilevel converter. The full-bridge modular multilevel converter has a three-phase bridge structure, each phase of the converter comprises an upper bridge arm and a lower bridge arm, the upper and lower bridge arms which are respectively formed by serially connecting N full-bridge power modules end to end, and the full-bridge power modules form a chain type multilevel structure, the front ends of the first power modules of the upper bridge arms of all phases are connected to form the positive pole of a public direct current bus; the tail ends of the Nth power modules of all lower bridge arms of all phases are connected to form the negative pole of the public direct current bus; the tail ends of the Nth power modules of all upper bridge arms are connected with the front ends of the first power modules of the respective lower bridge arms of the phases by smoothing reactors; and the center of the electric reactor serves as the alternating current bus of the phase. The device has high high-voltage direct current output capacity and the direct current voltage of the device can be regulated continuously from zero; on the other hand, the fully compatible chain type scalable vector graphics (SVG) topology can realize quick dynamic reactive regulation; and the device has the combined functions of direct current de-icing and alternating current dynamic reactive compensation.

The invention relates to an SVG technology-based distribution network modeling system. The single-line diagram of the distribution network modeling system is generated according to the following steps: SVG entities are respectively constructed with different patterns according to different types of distribution network structures contained in a distribution model; according to the branch information contained in a distribution network wiring diagram, the basic branch entities of an SVG topological diagram are constructed; node entities and branch entities are respectively constructed with different colors and solid and dotted patterns according to operating states; the entity shape of each equipment in a distribution network is customized in advance; the data of a power grid model are accessed and read; and the single-line diagram of the distribution network is formed by merging, and a closed loop model is automatically generated. The SVG-based pattern vector display technology disclosed by the invention can efficiently and visually display distribution network wiring diagrams in real time. The SVG technology-based distribution network modeling system can effectively increase working efficiency and provide a variety of appropriate topological diagram display modes for users, and is used in various power grid analysis works.

The present invention addresses the foregoing problems and concerns a print driver executable on a user's personal computer and responsive to a print option selection from any application program, generates output that conforms to a standardized markup language format.

Browser-based software uses image tiling techniques to display interactive charts of large scale, time-based datasets. Scalable Vector Graphics instantiated from code loaded in memory associated with a server dynamically generates image tiles at the server, which tiles are then selectively called up and downloaded to a client system for display. The server consolidates requested data into averaged data points and then renders an overall graphic representation by appropriately assembling the averaged data points into discrete tiles. Mapping-based tiling software at the client system assembles a composite image of a portion of a chart/graph for a user-selected region at a selected resolution within a viewport of predetermined size, considerably improving graph interaction and reducing rendering times over existing Flash-based solutions. The server is configured to pre-empt selection of any particular area by generating a sub-layer of tiles that would, upon request, be immediately downloadable to the client system.

The invention provides an SVG (Scalable Vector Graphics) based Web GIS (Web Geographic Information System) system. The system comprises a server and a client, wherein the server further comprises a data persistent layer, an application logic layer and a Web service interface, and the client comprises a browser; the data persistent layer is used for storing space geometrical geographic data, the application logic layer is used for transferring the Shape file format space geometrical geographic data stored in the data persistent layer into the SVG format, and finally forms an SVG map; and the client interacts with the server through the Web service interface, the client sends a request to the server through the Web service interface, and the server sends an SVG map to the client through the Web service interface. The system provided by the invention has the advantages that the system utilizes the advantages such as accuracy, high scalability and small data amount of the SVG, transfers the long-term accumulated geographical information in the traditional GIS system, and enables the information to be displayed in the network terminal for people to develop and use.

The invention relates to the technical field of an on-line monitoring system for an intelligent substation, in particular to an electric apparatus state display and real-time alarm method based on SVG (Scalable Vector Graphics) technology, the method is particularly a method for state display and real-time alarm of an electric apparatus of the intelligent substation. The electric apparatus state display and real-time alarm method comprises an electric apparatus primitive defining and drawing module, an integrative graphic model library mapping module, a fault diagnosis and analysis module and an electric apparatus state display and real-time alarm module. The electric apparatus state display and real-time alarm method based on SVG technology can work across platforms very well, different responses to user actions are supported, the problems that graphic image editing is poor, non-open standard universality cannot be guaranteed, file is too large and network transmission efficiency is low in the prior art are solved, exchange on electric power graphic and model associated data among different systems are supported, and electric power is dynamically described in real time.

The invention discloses a high-voltage direct-hanging type scalable vector graphics (SVG) comprehensive control device and an SVG comprehensive control method. The comprehensive control device is connected with an electric network. Each phase of the high-voltage direct-hanging type SVG comprehensive control device comprises an inductor-capacitor (LC) filter branch, a connection reactor and an H-bridge unit serial branch, wherein the H-bridge unit serial branch is connected in series with the connection reactor and then connected in parallel with the LC filter branch; the LC filter branch comprises an inductor and a capacitor; the H-bridge unit serial branch comprises N H-bridge units which are connected in series; N is more than or equal to 2; and each H-bridge unit comprises a bridge circuit which consists of four power elements. The comprehensive control method comprises a step of comprehensive control; and the step of comprehensive control further comprises a detection step, in which a detection method based on a plurality of synchronous rotational coordinates is adopted so as to carry out comprehensive control on a reactive current, a negative-sequence current and a harmonic current. The technical scheme of the invention has the advantages of simple structure, high response speed, good waveform of an output voltage, flexible control, convenience for modular manufacturing, and the like.

The invention provides a main network and distribution network integrated security power supply system. The main network and distribution network integrated security power supply system comprises an energy management system (EMS), a distribution management system (DMS) and a video monitoring system, wherein grid models of all stages of dispatching automatic systems are spliced among the EMS, the DMS and the video monitoring system in an extensible markup language (XML) format of a common information model (CIM); and graphs of all stages of dispatching automatic systems are shared among the EMS, the DMS and the video monitoring system in a scalable vector graphics (SVG) format. The main network and distribution network integrated security power supply system provided by the invention aims to integrate data and integrated application, is comprehensively interconnected with the conventional EMS, the conventional DMS and the conventional video monitoring system by using a uniform grid information model, a uniform encoding standard and a uniform showing way, can share data to the greatest extent, and can comprehensively monitor and control each stage of related grid information in real time.

The invention discloses a double-DSP (digital signal processor) control system based on a chained SVG (scalable vector graphics). The double-DSP control system comprises a double DSP and an FPGA (field programmable gate array), wherein the double DSP is used for carrying out functional division according to a primary DSP and an auxiliary DSP, reading voltage and current information from the DSP, executing a core algorithm, calculating modulation wave information and providing the modulation wave information to the FPGA, wherein the FPGA is used for carrying out analog quantity sampling, so as to generate PWM (pulse-width modulation) pulse signals; and coding the PWM signals, transforming the coded PWM signals into optical signals to be transmitted into a corresponding power module, wherein the primary DSP is used for acquiring the state of the power module and the state of an external switch, and carrying out logic control and command transmission on the states. With the adoption of the double DSP control system based on the chained SVG, the double DSP+FPGA is adopted as a hardware core of a control platform; reasonable control software design is carried out by aiming at control requirements of the chained SVG on such basis; corresponding functional modules are designed according to the advantages of different CPUs (central processing units); data exchange and processing are carried out on the functional modules through an internal memories, buses and the like; the whole control system is compact in structure, rapid and effective in running.

The invention discloses a transformer substation based on a model converter and a quick scheduling master station converting method. In the invention, after CIM (CompuServe information manager) and SVG (scalable vector graphics) are seamlessly connected with a database of the scheduling master station, the scheduling master station can dispatch the built database to obtain the display of a transformer substation model and graphics from an interface. Therefore, different specification information IEC61850 and IEC6190 can be converted at the terminal end of the transformer substation, and model exchange files can be generated correspondingly; with the generation of the model files, the secondary device model information of the transformer substation and the demand information of the master station are tightly combined. Meanwhile, through the SVG graphic files, the primary device topologic information of the transformer substation and the exchange information content of the master station can be integrated together. Finally, the technical innovation target of seamless communication is realized through a corresponding mapping mechanism.

The invention discloses a reactive power and voltage control method for grid-connected inverters of a large photovoltaic power station. The method comprises steps as follows: a voltage reference unit gives reference voltage uref to a voltage control point; a reactive power setting unit is used for comparing actual voltage of the voltage control point with the reference voltage to obtain voltage deviation, and reactive power reference quantity Qref required by maintaining voltage of the voltage control point is automatically acquired through a PID (proportional-integral-derivative) controller; a reactive power distribution unit automatically performs reactive power distribution between SVG (scalable vector graphics) and each photovoltaic power generation unit; the grid-connected inverters in the photovoltaic power generation units adopts distribution in equal proportion of reactive capacity. According to the method, coordinated control of a reactive power compensation device of the photovoltaic power station and the photovoltaic inverters is sufficiently utilized, grid-connected point voltage fluctuation of the photovoltaic power station is reduced, reactive power support is provided for a power grid, and voltage stability of a weak grid is improved; meanwhile, reactive power is distributed according to line loss of the photovoltaic power generation units, and active loss of the photovoltaic power station is reduced; therefore, the reactive power and voltage control method facilitates safe, economic and stable operation of the large photovoltaic power station accessing the weak grid.

A data processing apparatus and method are described for rendering multimedia content for hierarchical structured documents, including a cross-compiler that parses a formatted multimedia object, performs conversions on video data and audio data contained in the formatted object, and generates an intermediate object representing the data from the formatted multimedia object, and a runtime-script that receives the intermediate object and dynamically generates and modifies scaleable vector graphic nodes in a hierarchical structured document for rendering of the multimedia content by a web browser.

An XML-based document which includes text for plural pages also includes directory information which stores location pointers for each of the plural pages. Preferably, the XML-based document is a document that conforms to the scalable vector graphics (SVG) standard. An authoring tool and a viewer are disclosed.

The invention discloses a SCADA (Supervisory Control And Data Acquisition) WEB monitoring method applied to the field of an electric power automation system. According to the method provided by the invention, the technology of automatically generating a SCADA monitoring graphics through a power component template on the basis of SVG (Scalable Vector Graphics) and RIA (Rich Internet Application), GSOAP and Comet technologies are combined for accessing data, a JSON (JavaScript Serialized Object Notation) data exchange mode is taken, and the monitoring graphics is real-time dynamically rendered, so that a WEB real-time monitoring function for a SCADA system is realized, an ideal of modeling and imaging integration is reflected, the high efficiency and reliability of network and data transmission and access are ensured, the information synthetic operation is performed through the technology of integrating element comprehensive data of the monitoring graphics, and a condition is created for establishing an intelligent scheduling system.

A computer program product including machine readable instructions stored on machine readable media, the product for assembling and providing a visual interface for a user to interact with spatial information, the product including: a build subsystem for assembling spatial information by converting drawings including the spatial information into scalable vector graphic (SVG) files; the build sub-system further including instructions for merging graphic data of the spatial information and annotating resources represented within the graphic data; and a run-time subsystem for interpreting assembled spatial information and providing the visual interface; wherein the run-time subsystem includes instructions for display and event management control to provide interaction between the user and the spatial information.

The invention discloses a canvas code generation method, comprising: acquiring an SVG (scalable vector graphics) file for generating a code; generating JSON-format intermediate data including elements and their hierarchical relationship based on tag names, tag types and attribute information of the elements in the SVG file; traversing the intermediate data according to sequences from outside to inside and front to rear in the hierarchical relationship of the elements, and determining a canvas code unit corresponding to the attribute information of each element; combining the determined canvas code units according to the sequences to obtain a canvas code corresponding to the SVG file. Therefore, canvas codes are generated automatically, and canvas code generating efficiency is improved.

The invention relates to a method for realizing graphic monitoring of an electric energy collection and monitoring system, which comprises the following steps that: devices or other objects of the system are defined, an object collection searching tool to be selected is defined, a selected object is dragged from the searching tool onto a graphic device to be directly correlated to a database, and the selected object is dragged from the searching tool onto a data defined corresponding field to directly define operand; a standard scalable vector graphics (SVG) format graph can be generated; and cross-platform data definition can be realized by utilizing the SVG technology. The method has the advantages that: (1) a final exclusive object is selected from a visible graphic tree tool layer by layer to be dragged onto the target object, so the error caused by the manual input can be reduced, and more convenience and rapidness can be realized. (2) Relevance of multiple data sources can be realized. (3) Flexibility in definition can be realized, and the data is convenient to expand.