Symantec Operating Corporation

Veritas Operating Corporation

Siemens Medical Systems, Inc.

Ming Xu

Vikas Gupta

Kedar M Karmarkar

John Colgrove

Ronald S Karr

Anand A Kekre

Raghu Krishnamurthy

Deepak Tawri

Saurabh Ramchandra Godbole

Sachin Mohan Vaidya

Pavan Vijaykumar Deolasee

Parag Thakur

Phuong Thao Trung Le

Bharat Dighe

Vanita Bhatt

Zheng Chen

A system and method for visually depicting component states in a computing system. A graphical analysis tool includes a graphical user interface for use in viewing the history of a selected component. A user selects a system component for viewing and then using a timeline 'drags' the state of the selected component to various points on the timeline in order to view states of the component at the selected point in time. States of the selected component may also be played forward or backward in a continuous manner. Logging agents in the system are configured to log data corresponding to detected events and forward the log data to a central repository. The analysis tool may access the data in the repository for use in creating visual displays. Point-in-time snapshots of a component may also be stored in the central repository and used to reproduce the history.

Graphical analysis of states in a computing system

A plurality of virtual circuits, each including at least two network nodes, may be established over a single network connection for inter-process messaging. The network connection may be opened asynchronously via a non-blocking open. A virtual circuit including three or more nodes may be implemented in a star formation or a relay formation. Messages may be sent as unicast or broadcast messages. An additional virtual circuit may be opened for the purpose of transmitting status information regarding the network connection between the networked computer systems.

Inter-process messaging using multiple client-server pairs

A method and system of providing periodic replication is disclosed. According to one embodiment, a method is provided which comprises creating a storage object corresponding to a storage volume, wherein the storage object comprises a point-in-time copy of the storage volume and a storage volume map; and replicating the storage volume using the storage object.

Method and system of providing replication

Disclosed is a method and system for performing periodic replication using a log and a change map. According to one embodiment, a first region and a second region of a primary data volume are identified and a plurality of write operations to the primary data volume are tracked by tracking write operations to the first region utilizing a storage replication log and tracking write operations to the second region utilizing a storage replication change map. Thereafter, data associated with the plurality of write operations is replicated from the primary data volume to a secondary data volume utilizing at least one of the storage replication log and the storage replication change map.

Method and system for performing periodic replication using a log and a change map

A method and system of providing periodic replication is disclosed. According to one embodiment, a method is provided which comprises creating a storage object corresponding to a data volume, wherein the storage object comprises a point-in-time copy of the data volume and a data volume map; and replicating the data volume utilizing the storage object.

Method and system of providing periodic replication

An improved acquisition scheme for a medical imaging and treatment system According to one aspect of the invention, adaptive radiation detection, for determining when therapeutic or diagnostic radiation is being applied, is provided. The imaging device acquires several test images during a preacquisition delay. The maximum intensity level from these test images is defined as the upper limit of a camera 's response in the darkness. The standard deviation of the intensity distribution is also computed. The image intensity level of the subsequent test images are compared to a radiation detection threshold which is determined to be the upper limit of the camera's dark signal, plus twice the standard deviation of pixel intensity distribution of the dark test images. If the intensities of a statistically significant number of pixels exceeds the threshold, the radiation is considered to be on. According to another aspect of the invention, a single look-up table is used for both the test images and the actual acquisition images. The single look-up table is downloaded upon detection of power to a linear accelerator According to still another aspect of the present invention calibration of a lower bound of a signal of interest occurs using a histogram based algorithm, so that only the histogram needs to be transferred from the imaging board to the host computer. Furthermore, the present invention is capable of automatically calculating the upper bound of a signal of interest. In addition, the present invention is configured for continuous image integration such that each acquisition cycle is repeated until the linear accelerator is turned off. Thus, the final image is the integration of images from each acquisition cycle.

Acquisition scheme for an electron portal imaging system

Growing community of inventors

San Ramon, CA, United States of America

Ming Xu