Hewlett-packard Development Company, L.p.

Akamai Technologies, Inc.

Leonidas Kontothanassis

David Goddeau

Jean-Manuel Van Thong

Amir Bar-Or

Michele Mae Covell

Wai-Tian Tan

Nina Bhatti

Mirjana Spasojevic

Sumit Roy

Beth Teresa Logan

Beomjoo Seo

Richard Flower

Rivka Ladin

Methods and systems thereof for monitoring the performance of a streaming media server are described. Server-side measurements are performed with the server operating under a load. Client-side measurements are performed along with the server-side measurements. Data from the server-side measurements and data from the client-side measurements are aligned by time.

Monitoring the performance of a streaming media server using server-side and client-side measurements

A method and system for scheduling jobs in a cluster of compute servers using dynamic job profiling improves the overall performance of the computing cluster. Specifically, the method and system monitors the performance of individual compute servers in a cluster, and assigns jobs to particular compute servers based on the most current performance information of the compute servers. As the job profiles of the compute servers change with every job processed, the decision as to which compute server is most appropriate for a particular job will dynamically change. Various scheduling algorithms can be used in connection with the method and system to assign jobs to specific compute servers based on the available information in the job profiles.

Method and system for guiding scheduling decisions in clusters of computers using dynamic job profiling

Methods and systems for controlling the admission of media content into a network are disclosed. A method includes accessing a request for authorization to transfer media content where the request for authorization includes details of a request for media content made to a server of a plurality of servers. In addition, the method includes determining whether at least one of the plurality of servers will be authorized to accommodate the request for media content. A message is generated that is accessible by the server. An admission of media content by the server is coordinated with admissions of media content by the plurality of servers.

Methods and systems for controlling the admission of media content into a network

A method for shedding signal load in a network having a plurality of devices is disclosed herein. The method comprises computer-implemented steps of (a) issuing a load-shedding policy, where the policy includes (i) fraction f of the signal to be discarded; (ii) device D where fraction f of the signal is to be discarded; and (iii) pattern P of discarding fraction f of the signal; (b) transmitting the issued load-shedding policy to device D; and (c) discarding portions of the signal at device D according to pattern P until fraction f of the signal is discarded.

Method and system for shedding load in physiological signals processing

A method of load-shedding in a system having a plurality of signal sources is disclosed. The method comprises the steps of: (a) for each signal source Sselected from a set of sources {S, S, . . . }, each source having state pselected from a set of states {p, p, . . . , p; p, p, . . . , p; . . . }, wherein i is an integer greater than one, N is an integer not less than two and k is an integer from 1 to N: (i) obtaining fractions f, wherein each 0&#x2266;f&#x3c;1 is a fraction of a signal from source Sto be discarded if source Sis in state p; and (ii) determining respective state pof signal source Sbased on the signal from source S; and (b) for each source signal Sin determined state p, discarding fraction fof a signal from source S.

State-based load shedding for physiological signals

An apparatus and a method for detecting cardiac atrial fibrillation events in an EKG signal. The method comprises the steps of detecting a portion of an EKG signal comprising cardiac beats; measuring the duration of a gap in the detected portion of the EKG signal; and computing two or more inter-beat intervals. The computed interval is outputted if the gap in the portion of the EKG signal is not more than a fraction alpha of the computed interval. The method further includes the steps of computing the variance of the inter-beat intervals and classifying the portions of the EKG signal as indicative of an atrial fibrillation event. During classification, the inter-beat interval variance of the portion of the EKG signal that exceeds a pre-determined value V is indicative of an atrial fibrillation event. The method further includes discarding portions of the EKG signal classified as indicative of atrial fibrillation if said portions have a duration less than a pre-determined threshold S and annotating the EKG signal. The non-discarded portions of the EKG signals having inter-beat variances that exceed V are annotated as atrial fibrillation events.

Method and apparatus for improving the accuracy of atrial fibrillation detection in lossy data systems

A computer method and system synchronizes one streaming data signal with another data signal. A subject data signal and working data signal are received. The working data signal has predefined coordinates in a coordinate system (e.g., time origin and unit sampling rate in a time coordinate system for audio). The subject data signal and working data signal are transformed into respective common representations. An alignment process aligns the respective transformed representations by matching the transformed representation of the working data signal to that of the subject signal. A re-synchronizer element transposes the predefined coordinates of the working data signal onto the subject signal in the aligned state of the respective transformed representations. As such, the subject data signal is synchronized to the coordinate system of the working data signal.

Content-based synchronization method and system for data streams

A control and communication infrastructure (CCI) for use in a wide area network wherein a plurality of interconnected machines operate a plurality of different applications having varying data transport requirements. Machines within a wide area distributed network agree on a namespace of data objects so that all machines use the same name for a particular data object. Then, machines communicate with one another by publishing and subscribing to data objects in the namespace. The infrastructure selects an optimal transport mechanism from a set of available transport mechanisms based on the data being moved and its frequency and loss tolerance, and then hides the details of how the data is moved from the application using the infrastructure.

Control and communication infrastructure (CCI) for selecting a transport mechanism to transport data to one or more servers in a content delivery network based on the size of the data, together with frequency and loss tolerance with respect to transport of the data

Growing community of inventors

Arlington, MA, United States of America

Leonidas Kontothanassis