Abstract: A distributed application deployment engine uses declarative deployment data that describes deployment characteristics for application modules, and potential target environments. The engine uses the deployment data to potentially match a module to a deployment target. At some point, the modules may then be actually deployed on the identified deployment target. This may be performed for multiple modules in the distributed application, thereby deploying the distributed application in a distributed environment.

Abstract: The present invention extends to methods, systems, and computer program products for performing requested commands for model-based applications. Embodiments of the invention permit efficient implementation of operations for model-based applications. Since drivers that are to implement an operation request data for implementing the operation, embodiments significantly reduce the likelihood of superfluous data being exchanged between an executive service and drivers. Further, if an operation is interrupted before implementation is complete, the operation can be resumed without having to re-perform already completed portions of the operation. Additionally, a user can be regularly updated on the progress of their commands.

Abstract: The present invention extends to methods, systems, and computer program products for visualizing key performance indicators for model-based applications. A composite application model defines how to graphically present an interactive user surface for a composite application from values of a key performance indicator for the composite application. A presentation module accesses values of the key performance indicator for a specified time span. The presentation module graphically presents an interactive user surface for the values of the key performance indicator for the specified time span in accordance with the definitions in the composite application model. Interface controls are provided to manipulate how the data is presented, such as, for example, panning and zooming on key performance indication values. Other relevant data can also be presented along with key performance indicator values to assist a user in understanding the meaning of key performance indication values.

Abstract: Abstracting communication with a plurality of containers. Each container encapsulates or hosts a module (e.g., a web service, a database, etc.) associated with a distributed application. A meta-container communicates with drivers that interface with each of the containers. The meta-container represents an abstraction and a virtualization of the containers in the hierarchy. Each container may also be a meta-container for other containers. The recursion and layered hierarchy provide flexible, extensible, and efficient management of the distributed application.

Abstract: There is disclosed an apparatus and methods for adjusting of bit rate transmission in a communication network by monitoring the state of the network, detecting the state of the network and transmitting a multimedia call over the network in accordance with the network state detected. In accordance with the invention the network state is monitored with the bit rate adjusted in accordance with the network state detected. This results in a multimedia call with greatly improved audio quality.

Abstract: A system for managing an application set is disclosed. The system includes a wrapper that designates a component as belonging to the application set and an interface that provides access to the component. The system also includes a control module that uses the interface to manage the component. Methods of using the system are also provided.

Abstract: A system and method of remotely debugging an orchestration service instance providing a means for establishing a communications connection with a computer, wherein the computer is executing a business process service instance. Stored tracking information regarding the orchestration service instance is read, and the orchestration service instance is remotely debugged by way of the communications connection and according to the stored tracking state information.

Abstract: A method and apparatus for reconstructing media at a receiver from a media stream which includes a plurality of data packets wherein each data packet includes at least one media field. The media stream is monitored by a monitoring device and a packet pattern of the media stream is evaluated. An estimating device estimates a media time of at least one lost packet for reconstructing media by a reconstructing device at the receiver.

Abstract: A transimpedance amplifier system includes a current source, such as a photodiode, coupled between two transimpedance amplifiers, each having feedback circuits with different impedances. Thus, for example, the cathode of a photodiode is coupled to a first transimpedance amplifier while the anode of the photodiode is coupled to the second transimpedance amplifier. Consequently, two voltage gains can be achieved without the use of conventional switched feedback circuits or the use of additional gain stages. A clamp circuit in parallel with one of the feedback circuits can be used to ensure that the both transimpedance amplifiers operate within their linear regions.

Abstract: A method for communications channel reservation in a computer network telephony system, the method including a) a local gateway sending a resource reservation request to a local gatekeeper for at least one remote telephone line, b) the local gatekeeper sending the resource reservation request to a remote gatekeeper via a network, c) the remote gatekeeper querying a remote gateway to determine if the remote gateway has any telephone lines that the remote gateway may provide for the termination of telephone calls, d) the remote gatekeeper reserving for the local gatekeeper in response to the reservation request at least one terminatable telephone line at the remote gateway, e) the remote gatekeeper notifying the local gatekeeper of the reservation for the local gatekeeper, and f) the local gatekeeper forwarding information regarding the reservation to the local gateway.

Abstract: A method for measuring delay parameters in a packet switched network between node A and node B, each having a clock, is disclosed The method includes the steps of: measuring a first relative one way delay (ROWD1) from node A to node B, measuring a second relative one way delay (ROWD2) from nude B to node A and calculating the difference between the first and second relative one way delays for providing a relative one way delay (ROWD) parameter. Methods for improving TCP protocol and detecting congestion in a packet switched network using ROWD measurements are also provided.

Abstract: There is disclosed a method and apparatus for controlling the size of a jitter buffer in an audio receiver. The method an apparatus are such that network jitter can be distinguished from burst periods, where a large number of data packets (or packets) are transmitted rapidly. This method comprises the steps of monitoring the network for at least one burst period and then determining a likelihood for at least one subsequent burst period from this at least one burst period. The jitter buffer size is then adjusted based on the likelihood of this subsequent burst period. Apparatus for performing these method steps is also disclosed.

Abstract: Methods and apparatus for measuring network bandwidth are disclosed. These methods involve estimating present network bandwidth, transmitting test packets for measuring the available bandwidth, and adjusting the bandwidth, based on said measurement, by changing packet transmission bitrate.

Abstract: A method and apparatus for detecting defects on the surface of a data recording medium. In one embodiment the present invention includes a sensor for detecting defects on the surface of a magnetic disk. The sensor generates an analog voltage signal that is representative of a surface anomaly detected on the disk surface. An analog signal processor processes the signal before it is received by a peak detecting circuit. The peak detecting circuit detects and converts a peak of the analog signal into digital data. The digital data is received and manipulated by a digital signal processor where the peak amplitude, average peak amplitude and average peak power of the defect may be calculated.

Abstract: An automatic surface inspection apparatus comprises a light source that provides a coherent light beam that is spit and then recombined in a prism to generate an interference pattern. A cylindrical lens projects the interference pattern onto the surface of a disk as a line of light. A linear detection array converts the reflected line of light into an electrical signal that has a magnitude which varies dependent upon the reflected light intensity. Defects present on the surface of the disk cause variations in the reflected light intensity manifested as differences in the electrical signal output by the detection array.