International Business Machines Corporation

Hewlett-packard Development Company, L.P.

3com Corporation

Tippingpoint Technologies, Inc.

Joe Wayne Blackard

Dennis James Cox

Brian Smith

Craig S Cantrell

Marc Willebeek-LeMair

Francis S Webster, Iii

Charles R Buckman

Jon Harald Werner

Donovan Kolbly

Lance Warren Russell

Gary Roy Shippy

Johnny G Barnes

Richard G Fogg, Jr

Lynn Erich Petersen

Arturo M De Nicolas

Rajan Krishnamurty

Richard Adams Gillaspy

William John Henthorn

Donovan M Kolby

John H Werner

Terry L Mothersole

A network node includes a classify engine interfaced with the Internet. The classify engine accepts packets from the Internet and determines classification information for each packet. A process engine is interfaced with the classify engine, and has ports, each port being associated with a function. A controller is interfaced with the classify engine and the process engine. The controller programs the classify engine with a dataflow program to route each packet to a predetermined port of the process engine based on the classification information of the packet.

System and method for processing network packet flows

A system and method provides a broadband network node for a best effort network such as the Internet or intranets which supports the inexpensive and rapid deployment of services to the best efforts network. Separate data path and control path mechanisms allow high-speed data transfers with parallel processing flows for the data path that are controlled across data flows by the control path. Packets are classified, modified and shaped to enable the service on the network with an accountant to track packet traffic for control and billing purposes. A series of processing blades perform a modification function for each blade that processes packets according to classifications. The processing blades are modular and scalable for insertion in the broad band switch to rapidly adapt the broadband network node for new services.

A data processing system and a method implement a unique push, or streaming, model for communicating time sensitive encoded data, such as video and audio data, in a communication network. A pacing mechanism is implemented in the data processing system to allow a client to pace a streaming server in a stable way such that a fill level of a client buffer will oscillate around a single threshold value. A simple protocol is implemented to protect pacing primitives, allow recovery for pacing primitives, and to keep a client and a server synchronized during the pacing operation. To implement the pacing mechanism, the streaming server transmits data at a slightly faster rate than it was encoded. Subsequently, a decoder circuit at the client, or receiver, uses the transmitted data at the encoded rate. Thus, the utilization of buffers in the client will gradually increase. When the utilization of buffers reaches a threshold level, the client provides a pacing message to the server. When the pacing message is received, the server withholds sending data for a period of time sufficient to drop the client buffer utilization to a level below a threshold level.

Data processing system and method for pacing information transfers in a

The system and method of this invention simulates the flow of control of an application program targeted for a specific instruction set of a specific processor by utilizing a simulator running on a second processing system having a second processor with a different instruction set. The simulator reduces the number of translated instructions needed to simulate the flow of control of the first processor instructions by detecting, at the time of a store to memory, whether an instruction, data, or video is being updated. If the memory location that is being updated contains an instruction, the simulator takes additional steps to guarantee the correct execution of the modified instruction. If the simulator determines at the time of a store that the memory location being modified is data, the simulator needs to take no additional steps.

Memory mapping and special write detection in a system and method for

A method to manage the operation of a coprocessor in a virtual memory type data processing system in which an Input/Output channel and an Input/output channel controller interconnect the coprocessor to the main processor and system memory. A Virtual Resource Manager (VRM) comprising a group of interrelated software programs function in the system to establish virtual machines that execute application programs concurrently. A Coprocessor Manager component of the VRM establishes a Virtual Machine in which the compressor executes application programs that cannot be executed on the main processor. The coprocessor is mounted on an integrated circuit card which is inserted into a `mother board` socket which contains the main processor and related components.

Method to manage coprocessor in a virtual memory virtual machine data

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Austin, TX, United States of America

Joe Wayne Blackard