Abstract:
A buffer is provided with a leading pointer and a following pointer. A bitmap in which two bits are assigned to each block is updated to retain which states blocks are in, busy, write-completed, or read-completed. Under the constraint that the two pointers move in the same direction and do not pass each other: after the block designated by the leading pointer starts to be written, the leading pointer is moved to a next block only if the next block is in the read-completed state; and after the block designated by the following pointer starts to be read, the following pointer is moved to a next block only if the next block is in the write-completed state.
Abstract:
A photomultiplier tube 1 is an electron tube comprising an envelope 5 including a frame 3b having at least one end part formed with an opening and an upper substrate 2 airtightly joined to the opening, and a photocathode 6 contained within the envelope 5, the photocathode 6 emitting a photoelectron into the envelope 5 in response to light incident thereon from the outside; wherein multilayer metal films 10b, 10a each constituted by a metal film made of titanium, a metal film made of platinum, and a metal film made of gold laminated in this order are formed at the opening and the joint part between the upper substrate 2 and opening; and wherein the frame 3b and upper side substrate 2 are joined to each other by holding a joint layer 14 containing indium between the respective multilayer metal films 10b, 10a.
Abstract:
A system and method is provided for improved interrupt handling via a micro interrupt handler. Upon an interrupt signal being sent to a processor running a task, a first part of the running task is stored to system memory via direct memory access. A micro interrupt handler is read from the system memory to begin handling the interrupt signal. A second part of the running task is stored to system memory via direct memory access. The micro interrupt handler is executed and read and the previous running task is read from direct memory access and restored. Long lag times for interrupt processing and inefficiencies in processor queues are avoided.
Abstract:
Enables efficient correction of topological consistency of an input three-dimensional shape approximated in a spatial graph. Structured mesh generation systems of the present invention include: a topology determination apparatus for reading shape data from a shape data storage device to determine topological consistency and outputting data for solving a problem about topological consistency; a decomposable shape generation apparatus for reading the data outputted by the topology determination apparatus, changing a constraint condition of an integer programming problem solver to execute a shape correction process and outputting corrected shape data; and a structured mesh generation apparatus for reading the corrected shape data to generate a structured mesh.
Abstract:
The present invention provides methods, apparatus and systems to improve the quality of the arrangement of nodes in a graphics display, for which a graphics image consisting of nodes and arcs is generated, and to increase the processing speed. Nodes are sequentially added and arranged in a display space, and each time a new node is added, a predetermined dynamic model is employed to correct the locations of the new node and of nodes that were previously arranged in the display space. The nodes are arranged beginning with a node having numerous adjacent arcs, so that the nodes that are arranged early in the process are located nearer the center of the display space. In the graphics image thus formed in the display space, arcs located within a predetermined distance of a specific node are curved so they detour around the node.
Abstract:
Properly detects an anomaly on the basis of directional data that are obtained in sequence from a monitored object. An anomaly detecting method includes: sequentially generating directional data indicating a feature of each piece of monitored data correspondingly to the monitored data which are input in sequence; calculating the dissimilarity of the directional data to a reference vector; updating a moment of the distribution of the dissimilarity appearing when the directional data is modeled with a multi-dimensional probability distribution, based on the moment already corresponding to the monitored data; calculating a parameter determining the variance of the multi-dimensional probability distribution, on the basis of the moment; calculating a threshold of the dissimilarity on the basis of the multi-dimensional probability distribution the variance of which is determined by the parameter; and detecting an anomaly in the monitored data that corresponds to the dissimilarity if the dissimilarity exceeds the threshold.
Abstract:
A synchronization scheme is provided for a multiprocessor system. In particular, a processor includes a buffer sync controller. The buffer sync controller is operative to allow or deny access by a subprocessor to shared data in a shared memory, such that a processor seeking to write data into or read data from the shared memory must ascertain certain shared parameter data processed by the buffer sync controller.
Abstract:
Provides a diagnostic apparatus for diagnosing a measured object based on time-series data of a plurality of parameters measured from the measured object. An example of an apparatus includes a change-point score calculating portion for calculating a time-series change-point score with which each of the plurality of parameters changes according to passage of time based on the time-series data on the parameter, a change-point correlation calculating portion for calculating a change-point correlation indicating strength by which each of the plurality of parameters is associated with each of other parameters based on the change-point scores of the parameter and the other parameter, and a parameter outputting portion for outputting a set of parameters of which calculated degrees of associations are higher than a predetermined reference change-point correlation as a set of mutually strongly associated parameters.
Abstract:
Direct memory access is provided for each member of a group of IO devices organized into groups. Direct memory access for each IO device is performed in a predetermined order based on the predetermined groups, and may be completed by notification by an interrupt request. A predetermined time delay may be specified between each memory access by each IO device of a predetermined group.
Abstract:
Methods and apparatus provide for associating memory allocation table (MAT) entries with nodes in a binary tree such that the nodes and the entries are grouped into hierarchical levels, each entry including status information; associating the nodes and the entries with segments of a shared memory of a multi-processor system such that higher level nodes and entries are associated with larger numbers of segments of the shared memory and lower level nodes and entries are associated with smaller numbers of segments of the shared memory; initializing the MAT such that the status information of at least a plurality of entries indicates that the associated segment or segments of the shared memory are available for reservation; and selecting one entry in a group of entries in the MAT at a level corresponding to a desired size of the shared memory to be reserved.