161 results about "Fixed field" patented technology

A particle therapy gantry for delivering a particle beam to a patient includes a beam tube having a curvature defining a particle beam path and a plurality of fixed field magnets sequentially arranged along the beam tube for guiding the particle beam along the particle path. In a method for delivering a particle beam to a patient through a gantry, a particle beam is guided by a plurality of fixed field magnets sequentially arranged along a beam tube of the gantry and the beam is alternately focused and defocused with alternately arranged combined function focusing and defocusing fixed field magnets.

A magnetic tunnel junction (MTJ) device is configured to store at least two bits of data in a single cell utilizing the variable resistance characteristic of a MTJ. The MTJ includes a soft and two fixed magnetic layers with fixed field directions oriented in perpendicular directions. The soft magnetic layer is separated from the fixed layers by insulating layers preferably with different thicknesses, or with different material compositions. The resulting junction resistance can exhibit at least four distinct resistance values dependent on the magnetic orientation of the free magnetic layer. The cell is configured using a pattern with four lobes to store two bits, and eight lobes to store three bits. The resulting cell can be used to provide a fast, non-volatile magnetic random access memory (MRAM) with high density and no need to rewrite stored data after they are read, or as a fast galvanic isolator.

A particle therapy gantry for delivering a particle beam to a patient includes a beam tube having a curvature defining a particle beam path and a plurality of fixed field magnets sequentially arranged along the beam tube for guiding the particle beam along the particle path. In a method for delivering a particle beam to a patient through a gantry, a particle beam is guided by a plurality of fixed field magnets sequentially arranged along a beam tube of the gantry and the beam is alternately focused and defocused with alternately arranged focusing and defocusing fixed field magnets.

The invention relates to an audio and video synchronization method based on simplified timestamps, which comprises the steps that a counter is generated to serve as a timestamp supply source; the timestamps for an image inputted originally and audio are established independently according to frames; after audio and video frames are coded, the timestamps are typed into fixed fields of code stream frames; the frames are composited; when the code stream composite frames are received, the timestamps are extracted and decoded; recovery data and the timestamps are stored in buffer zone queues; when the audio is played, the empty and full degree of an audio buffer zone is monitored; if the degree exceeds a defined threshold, stepout in streams is adjusted by adopting audio skip frames or repeated frames; when a video is played, the video frames to be played currently are compared with the audio frames synchronized in the streams on the timestamps; and if a difference exceeds a set threshold, the stepout among the streams is adjusted by adopting video skip frames or the repeated frames. According to the method, a timestamp field is introduced; the stepout in the streams and among the streams is distinguished by the empty and full degree of the buffer zones and the difference of the timestamps; a global clock is not required; resource occupation is less; and the method is simple and efficient by utilizing the skip frames and the repeated frames to synchronize.

An apparatus and method for authoring multimedia documents are provided. The apparatus includes a template document floating field detector for detecting a floating field of a template document, which is an incomplete multimedia document having a fixed field and the floating field, by parsing a control document including information identifying the floating field and a list of selectable objects; a control document provider for rendering and outputting the control document; a user selection information receiving unit for receiving information selected by a user with respect to the control document output from the control document provider; and a multimedia document finisher for completing the template document as a multimedia document by fixing the detected floating field to be an object designated by the information selected by the user among the list of selectable objects, when the information selected by the user is received.

Various methods and apparatuses are described for performing high speed format translations of incoming data, where the incoming data is arranged in a delimited data format. As an example, the data in the delimited data format can be translated to a fixed field format using pipelined operations. A reconfigurable logic device can be used in exemplary embodiments as a platform for the format translation.

An image processing camera generates movement information on the basis of an omnidirectional image captured at a fixed field angle, and notifies PTZ camera of first movement information through a network. The PTZ camera analyzes the first movement information, changes a field angle to a specific monitoring target area. The image processing camera transmits second movement information to the PTZ camera. The PTZ camera analyzes the second movement information, captures a projected image of the specific monitoring target area when it is recognized that a current field angle is correct on the basis of the second movement information. Accordingly, an image of the specific monitoring target area is captured in a situation where there is no object such as a figure while monitoring a wide range.

A system and method for automatically controlling working edges on a heavy equipment vehicle is provided. A GNSS / INS system determines a location of the vehicle. A vision system calculates a location of the working edge in a vision system coordinate system by obtaining images of a target connected to the working edge using a camera with a fixed field view that incorporates the relative movement of the target and determining the relative position of the target in the images. The location is then transformed to the navigation system coordinate system. The transformed location information is used by a working edge control system to control the placement of the working edge.

The invention provides a protocol field reverse analysis system and method based on BWT. Specific suffix index is constructed, so that specific substring matching only needs to be completed once in each alignment process. Moreover, the alignment algorithm based on suffix index is flexible in design, consumes less space in the index stage, and the length of subsequence is variable, protocol fieldscan be quickly identified. After the fixed field is identified, the invention counts the fields with high frequency through a random multi-stream multi-segment matching method, constructs a grammar tree according to the field position and the number of the fields, extracts the field structure, and thus realizes the inverse of the field format. After being classified, the reverse field is used asthe input of the fuzzy test tool, a large number of deformity test cases is sent to the target communication entity, and at the same time, the debugger is combined with the sniffer to carry out abnormal monitoring on the target communication entity, the abnormality is found and analyzed, so as to subsequently improve the safety of the target communication entity.

A mobile station includes a degradation detecting section for detecting a degraded communication quality, an electric field measurement section for measuring an intensity of an electric field, and a display unit for representing a field level among a plurality of field levels. The display unit represents, upon generation of the degraded communication quality, a fixed field level instead of the field level corresponding to the intensity of the electric field measured by the electric field measurement section.

The invention discloses a data storage method and device, a data query method and device, computer equipment and a storage medium, and the method comprises the steps: obtaining a data storage requestwhich comprises a data identifier; obtaining to-be-stored data according to the data identifier; performing serialization processing on the to-be-stored data to obtain serialized json character strings, the serialized json character strings comprising N sub json character strings, and then performing one-to-one matching on each sub json character string and a preset fixed field in a target data table; finally writing the sub-json character string successfully matched with the fixed field into a list area corresponding to the fixed field; and writing the sub-json character string which fails tobe matched with the fixed field into a list area corresponding to the custom field in the target data table. According to the method, serialization processing is carried out on frequently-changed data, and then the json character string subjected to serialization processing is written into the list area corresponding to the self-defined field in the target data table, so that the data storage efficiency in the relational database is improved.

The invention relates to a data filling method and system for a configuration template. The method comprises the following steps: setting template field configuration information according to header information; creating a database table corresponding to the template, wherein fields of the database table comprise fixed fields and template field configuration information; adding a report to the first client, introducing a created database table, filling a report name, and associating a corresponding template; downloading the template at the second client by the user, filling data according to the header information of the template, uploading a spreadsheet data file, and writing the filled data into the corresponding database table by the background server. According to the method, corresponding filling software does not need to be developed in a customized mode according to the data filling requirement, each time of customized development is changed into universal implementation configuration, and the software customized development and maintenance cost is reduced. The invention further provides a system based on the method, and the system has the above beneficial effects.

The invention relates to a movable chopping machine. The movable chopping machine comprises a pull-type chassis, and a driving device, a transmission system, an automatic control system, a feeding cutting device, a feeding platform which are arranged on the pull-type chassis, and also comprise a travelling mechanism, wherein the pull-type chassis is supported on the travelling mechanism, the feeding cutting device is connected with the driving device by the transmission system, the automatic control system is connected with the driving device and the feeding cutting device respectively, and the feeding platform is arranged in front of a material inlet of the feeding cutting device. The movable chopping machine adopts a trailer structure design integrally, has self-supply power and a hydraulic system, can be used for operation at different fields under the traction of a tractor, also can be used for operation at a fixed field, and can cut branches, crotches or wood straws into pieces at the lumbering site or the field edges, so that the transportation efficiency is greatly improved; the movable chopping machine adopts manual feeding or manipulator feeding modes, so that the labor intensity is alleviated.

The invention discloses a moving vehicle tracking method based on corner matching. The moving vehicle tracking method comprises the steps of extracting corners of a detected region through a Harris algorithm according to a video image captured by a surveillance camera with a fixed field of view, calculating scale-invariant rotation feature transform descriptors of corresponding corners, matching the corners according to the scale-invariant rotation feature transform descriptors to form a track, performing calculation to obtain information such as a speed and a direction of the track, dynamically grouping the track, and performing reasonable judgment on a result obtained by initial grouping to determine a vehicle. By means of the moving vehicle tracking method based on corner matching, tracking of the vehicle is completed by performing matching tracking on the track and grouping the track. The moving vehicle tracking method based on corner matching can deal with effect of illumination variation of scenes and partial coverage of the vehicle on vehicle detection and tracking well.

The invention is suitable for the technical field of protocol template configuration, and provides a communication protocol template construction method and terminal equipment, and the method comprises the steps: constructing a protocol template file in a preset format through employing a fixed field and a user-defined field; constructing a configuration tool program file according to a communication protocol demand; and generating a target communication protocol according to the protocol template file and the configuration tool program file, thereby enabling different types of protocol configurations to realize self-analysis of each field through the protocol template file without modifying the configuration tool program file and only importing the protocol template file by defining the protocol template file. In addition, the protocol template is provided with the custom field, so that the field definition is flexible, the expandability is good, the development work caused by the change of the protocol template is avoided, and the stability and reliability of a software system are ensured.

A system and method for automatically controlling working edges on a heavy equipment vehicle is provided. A GNSS / INS system determines a location of the vehicle. A vision system calculates a location of the working edge in a vision system coordinate system by obtaining images of a target connected to the working edge using a camera with a fixed field view that obtains distance information for each pixel in the fixed field of view. The location is then transformed to the navigation system coordinate system. The transformed location information is used by a working edge control system to control the placement of the working edge.

A system and method are provided for implementing a digital signature scheme for embedding and validating multiple nested digital signatures in digitally produced documents without modifying a file size of the digitally produced and signed documents or otherwise corrupting previously-embedded digital signatures. A number of fixed fields are included in a digitally produced document, upfront, that will be populated with multiple digital signatures. With the fixed fields in the digitally produced documents, the entire file is cryptographically “hashed” and the individual digital signatures are independently verifiable via simple cryptographic schemes. Multiple digital signatures are embedded in documents including complex file formats in a manner that does not corrupt the documents. Known cryptographic techniques such as, for example, a known hash algorithm, are applied to the digitally produced documents including the multiple sequentially input digital signatures in a process that is independently verifiable.

The invention provides a text protocol reverse resolution method and a text protocol reverse resolution system. The method comprises the following steps that: a plurality of network data packets of a text protocol are captured, application layer data is extracted from each network data packet and is converted into data streams in a text form, and a plurality of obtained data streams form a data set; separators are used for carrying out segmentation processing on each data stream in the data set, the contents of each data stream are divided into a plurality of data items, and position information of each data item is recorded; for each data item, whether the data item is a feature item or not is determined according to the position information of the data item and the occurring times of the data item in the data streams and the data set; the identical feature items in each data stream are extracted in lines, the feature items are used as fixed fields, and adjacent non-feature items are merged to be used as variable fields; and cluster analysis is carried out, and the format features of the text protocol are determined. The method and the system have the advantages that the commonality and the relevance are analyzed from a great number of data packets of the same text protocol, and the protocol format is obtained, so the reverse resolution is preciser.

The invention discloses a siphon type automatic irrigation device, which comprises a siphon tube, the water inlet end of the siphon tube is located under the water surface to be taken, and the water outlet end is located on the area to be irrigated; the water outlet end is connected with an air extraction device; It includes a water stopper arranged on the vertical pipe at the highest point of the siphon, and a convex arm is arranged on the top of the water stopper; a groove matching the convex arm on the waterstop is arranged on the cam of the timer, and a cantilever is provided on one side of the convex arm. The cantilever is hinged on the timer base, the other side of the protruding arm is provided with a spring, and the end of the spring is fixed on the timer base. The invention can start irrigation through the air pumping device, and the irrigation time can be set in advance according to the irrigation needs. When the irrigation time is up, the timer automatically triggers the water cut-off switch, and the air enters the siphon, destroys the siphon, and the irrigation can be automatically terminated; automatic shutdown can be realized. Water saving, labor-saving, preventing farmers from artificially opening irrigation on the concrete agricultural canal to damage the agricultural canal and waste water resources; the irrigation position can be adjusted at will, and a siphon can be realized to control the irrigation of multiple farmlands, reducing the number of fixed irrigation gates in the agricultural canal, economical convenient.

A multi-beam x-ray generating device comprising a fixed field emission cathode having a plurality of fixed, independently controllable electron emitting pixels placed on the cathode in a predetermined pattern, facing the cathode and containing a predetermined pattern corresponding to the predetermined pattern of pixels Anodes with multiple focal points, and a vacuum chamber surrounding the cathodes and anodes are placed. Another structure is in the form of an x-ray generating device comprising a fixed field emission cathode having a planar surface on at least a portion of the planar surface with electron emissive material disposed in a parallel spaced relationship relative to the planar surface of the cathode and a grid electrode having a plurality of openings of different sizes, an anode opposite to and spaced from the cathode and having a plurality of focal points aligned with the electron emissive material, and a vacuum chamber surrounding the anode and cathode, wherein the grid electrode is operable such that The opening is manipulated to align or misalign at least one electron beam emitted from the cathode with at least one focal point. Related methods are also described herein.

A small and light-weighted electron accelerator (2, 40, 60) using a fixed-field alternating gradient of high electron beam intensity is provided with a vacuum container (10), an electric magnet (20) provided in the vacuum container, an electron beam inputting part (11) to input electron beam into the vacuum container (10), an accelerating apparatus (13) to accelerate electron beam, and an electron beam transporting part (26) to transport the accelerated electron beam from the vacuum container (10), and the electric magnet (20) is either an alternating gradient electric magnet made up with a converging electric magnet (21) and divergent electric magnets (22) provided at its both sides, or an alternating gradient electric magnet made up with a converging electric magnet (21) and divergent parts provided at its both sides, and an internal target (25) to generate X-ray is provided inside the vacuum container (10) right before the electron beam transporting part (26), and the accelerated electron beam and X-ray are selectively output. Since the electron beam of more than 10 times the prior cases, 1 to 10 mA at the acceleration voltage of 10 MeV, a radiation medical treatment apparatus (1) can be offered which is capable of irradiating electron beam to cancer organism or others in short time less than 1 / 10 of the prior cases.

A surveillance apparatus including a platform defining a central axis; a plurality of fixed field of view cameras mounted to the platform and equiradially spaced about the central axis. Each camera has a fixed field of view over an angular range of about 90 degrees about the central axis such that the plurality of cameras define a fixed field of view of the area of 360 degrees about the central axis. At least one pivotable camera is preferably mounted to the platform and radially spaced from the central axis providing a mutable view about the central axis. A communications device is coupled to the fixed field and pivotable cameras to provide a continuous fixed field view of the area and a mutable view of the area.

The invention relates to a detecting system and method for realizing negative test on robustness in a WAPI (Wireless LAN Authentication and Privacy Infrastructure) equipment safety protocol. The system comprises a detection control console, a concentrator and WAPI equipment; the detection control console is connected with the WAPI equipment through the concentrator; the WAPI equipment comprises reference equipment and equipment to be tested, wherein the reference equipment is the WAPI equipment which accords with the rule of the WAPI protocol standard and can construct and send abnormal messages with fixed field filing errors, and the reference equipment sends an abnormal WAPI distinguishing message with special field filling errors to the equipment to be tested according to a WAPI negative test term; and the detection control console acquires received and sent messages including the messages which are abnormal in the negative test in the detecting process and makes protocol analysis and negative test protocol analysis. The invention provides the detecting system and method for realizing negative test on robustness in the WAPI (Wireless LAN Authentication and Privacy Infrastructure) equipment protocol.