Sivarama S Putcha

US Patent:

6822966, Nov 23, 2004

Filed:

Mar 1, 1999

Appl. No.:

09/259946

Inventors:

Sivarama Seshu Putcha - Lee NH
Wallace Matthews - Northwood NH

Assignee:

Enterasys Networks, Inc. - Andover MA

International Classification:

H04L 1228

US Classification:

370411, 370413

Abstract:

A network communication device for directing data units over a communication network includes at least one input and/or output port arranged to receive and/or transmit data units, a plurality of buffer units divided into several sub-pools, and a buffer allocator for allocating buffer units between the sub-pools. The buffer allocator is arranged to determine a priority value for each sub-pool based on quality of service for each connection established at at least one port. The buffer allocator is also arranged to determine a utilization value of the port, and arranged to allocate buffer units for each sub-pool based on the priority value and based on the utilization value. The buffer allocator creates a precedence list to ensures that a minimal number of connections, which are established at a most utilized port, will suffer data unit loss while receiving the data units.

US Patent:

56731965, Sep 30, 1997

Filed:

Nov 30, 1995

Appl. No.:

8/564543

Inventors:

Mark E. Hoffman - Rochester NH
Roland J. Provost - Dover NH
Thomas Maehl - Philadelphia PA
Gregory P. Lavoie - Lee NH
Mark J. Plis - Barrinton NH
David D. Elmore - Somersworth NH
Warren R. Germer - Hampton NH
Jeffrey W. Mammen - Farmington CT
Donald F. Bullock - Madbury NH
Sivarama Seshu Putcha - Somersworth NH
Daniel A. Staver - Scotia NY
Arthur C. Burt - Dover NH
Curtis W. Crittenden - Dover NH
Ellen D. Edge - Portsmouth NH

Assignee:

General Electric Company - New York NY

International Classification:

G01R 21133

US Classification:

364483

Abstract:

Line voltage and line current signals are sensed on a power line having at least one conducting path. The sensed line voltages and line currents are converted into a digital signal. A phase-to-neutral voltage signal and phase current signal are computed from the digital signal to thereby define a phase of the power line. An interval of orthogonality is determined from the sensed voltage and current signals, coinciding with passage of an integral number of cycles of a fundamental frequency reference signal which is computed from the computed phase-to-neutral voltage signal. A vector metering quantity is computed for the determined interval of orthogonality from the computed phase-to-neutral voltage signal and the computed phase current signal. The vector metering quantities to be computed may be identified and computed based upon an associated detent. The vector metering quantity is also computed based on an identified circuit topology.