David E Peck

US Patent:

6452903, Sep 17, 2002

Filed:

May 31, 2000

Appl. No.:

09/583608

Inventors:

David N. Peck - Northbridge MA
Thomas A. Manning - Northboro MA

Assignee:

Fujitsu Network Communications, Inc. - Richardson TX

International Classification:

H04L 1228

US Classification:

370235, 370230, 3702411

Abstract:

Network interface logic includes first logic executing a credit-based flow-control protocol (e. g. , Quantum Flow Control or QFC) and second logic executing a rate-based flow control protocol (e. g. Explicit Rate or ER). The second logic transfers data cells between a network link and the first logic and inserts and extracts forward (FRM) and backward (BRM) flow-control/resource management (RM) cells. The second logic further (i) obtains cell buffer utilization information from the first logic, (ii) supplies transmission credits to the first logic based on rate information in BRM cells, (iii) induces the first logic to emit âdummyâ RM cells when an RM cell is to be transmitted, and (iv) converts the dummy cells to either FRM or DRM cells for forwarding on the link. Rate information in the transmitted RM cells is calculated from the buffer utilization information and rate information in extracted BRM cells.

US Patent:

6466541, Oct 15, 2002

Filed:

May 31, 2000

Appl. No.:

09/584125

Inventors:

David N. Peck - Northbridge MA

Assignee:

Fujitsu Network Communications, Inc. - Richardson TX

International Classification:

H04J 116

US Classification:

370229, 370232

Abstract:

A network device operates to control the clumping of cells on a connection using a rate-based flow-control protocol. In each of successive intervals, a number N is calculated representing the maximum number of cells permitted to be transmitted consecutively. N is calculated as the quotient from dividing a cell delay variation tolerance (CDVT) by the difference between the reciprocal of an allowed cell rate (ACR) and the reciprocal of a link cell rate (LCR). If the calculated quotient is greater than a number N for the connection indicating the maximum number of data cells allowed between forward flow-control cells, then N is set equal to N. A value C is calculated as the largest integer factor of N that is no greater than N, and the interval is then divided into N /C sub-intervals. No more than C cells are allowed to be transmitted on the connection in each of the sub-intervals. This limit is enforced using a credit mechanism in which no more than C credits are extended to a cell transmitter in each sub-interval.

US Patent:

6483807, Nov 19, 2002

Filed:

Mar 16, 1999

Appl. No.:

09/270580

Inventors:

Thomas A. Manning - Northboro MA
David N. Peck - Northbridge MA
Robert Constantin - Cambridge MA
David E. Hammond - Bedford NH
Andrew Michal - Windham NH
Stephen R. Veit - Chesterfield MO

Assignee:

Fujitsu Network Communications, Inc. - Richardson TX

International Classification:

G01R 3108

US Classification:

370236, 370396, 370400, 370410, 709238

Abstract:

Each switch along a call setup path in a network decides whether the call request should be upgraded from a non-flow-controlled service type to a flow-controlled service type. Each switch bases the decision on whether a boolean variable for the calling subscriber that appears in a management information base (MIB) is set to a value indicating that the subscriber is entitled to the upgrade. In addition, the upgrade is performed only if an interface on the route to the called party on which the call setup request is to be forwarded supports flow-controlled connections. When the call is to be upgraded, the switch replaces the service type indicator in the setup message with a value indicating a flow-controlled service type, and forwards the setup message toward the called subscriber. If the MIB variable is set to a value indicating that the upgrade is not to be performed, it is still possible for a subscriber to request flow-controlled service directly, by indicating this service type in the original call setup message. Each switch also makes a call downgrade decision.

US Patent:

6622540, Sep 23, 2003

Filed:

Jul 6, 2001

Appl. No.:

09/900075

Inventors:

Jerald E. Jones - Golden CO
David E. Peck - Rochester Hills MI

Assignee:

Trico Products Corporation - Rochester Hills MI

International Classification:

B21D 3716

US Classification:

723425, 72 83, 72 112, 72206, 723426, 723792

Abstract:

An apparatus for manufacturing a discrete curved product from a feed stock includes a source of heat that is adapted to impose a focused beam of light on at least one surface of a work piece to cause the surface of the work piece to expand and thereby move in the general direction of the heat source so as to impart a predetermined radius of curvature to the work piece. The apparatus is described in connection with one example where it may be employed to manufacture a curved backbone for a beam blade windshield wiper assembly from feed stock. In addition, a method of manufacturing a discrete curved product from feed stock, generally, as well as a discrete curved backbone for a beam blade windshield wiper assembly from feed stock, specifically, is also disclosed.

US Patent:

6628668, Sep 30, 2003

Filed:

Mar 16, 1999

Appl. No.:

09/270950

Inventors:

Peter Hutzli - Acton MA
David N. Peck - Northbridge MA
Thomas A. Manning - Northboro MA

Assignee:

Fujitsu Network Communications, Inc. - Richardson TX

International Classification:

H04J 316

US Classification:

370468, 37039521, 37039541

Abstract:

A system for allocating bandwidth in a network element. The system determines whether a bandwidth allocation request is associated with a delay sensitive connection type. If so, the system selects a bandwidth allocation algorithm from a first set of bandwidth allocation algorithms. Otherwise, the system selects a bandwidth allocation algorithm from a second set of bandwidth allocation algorithms. The size of the bandwidth allocation request may be examined when selecting which bandwidth allocation algorithm to use. The system may round up the size of the bandwidth allocation request to a predetermined value. The selected bandwidth allocation algorithm may reserve slots in a bandwidth allocation table. Reserved slots that are equally spaced in the bandwidth allocation table avoid undue delays in servicing an associated connection. A binary tree representation of the table is described, wherein leaves of the binary tree correspond to individual table slots.

US Patent:

6813923, Nov 9, 2004

Filed:

May 30, 2003

Appl. No.:

10/448709

Inventors:

Jerald E. Jones - Golden CO
David E. Peck - Rochester Hills MI

Assignee:

Trico Products Corporation - Rochester Hills MI

International Classification:

B21D 3716

US Classification:

723425, 72 162, 7234294

Abstract:

An apparatus for manufacturing a discrete curved product from a feed stock includes a source of heat that is adapted to impose a focused beam of light on at least one surface of a work piece to cause the surface of the work piece to expand and thereby move in the general direction of the heat source so as to impart a predetermined radius of curvature to the work piece. In addition, a method of manufacturing a discrete curved product from feed stock is also disclosed.

US Patent:

7042839, May 9, 2006

Filed:

Feb 7, 2002

Appl. No.:

10/071712

Inventors:

Mark A. W. Stewart - Acton MA, US
David Peck - Northbridge MA, US

Assignee:

Fujitsu Limited - Kanagawa-ken

International Classification:

H04L 1/22

US Classification:

370227, 370228, 398 5

Abstract:

A scalable protection method for connection oriented networks includes a source, a destination, and primary nodes interconnected by working path segments between the source and destination. A point-to-multipoint connection with multiple destinations and additional primary nodes is also supported. Each of a number of backup nodes is interconnected with an associated primary node by pre-provisioned shunt segments, and the backup nodes are interconnected among themselves by pre-provisioned protection path segments. Upon occurrence of a failure, the primary node upstream of the failure directs input traffic to a shunt segment, and the backup node associated with the upstream primary node directs traffic from the shunt segment to an output protection segment. Downstream of the failure, a backup node directs traffic from an input protection segment to a shunt segment, and the primary node associated with the backup node directs the traffic from the shunt segment to a downstream working segment. In this manner, traffic is routed around failures via local switching operations.

US Patent:

20070065844, Mar 22, 2007

Filed:

Jun 8, 2006

Appl. No.:

11/449155

Inventors:

Todd Golub - Newton MA, US
Justin Lamb - Cambridge MA, US
David Peck - Framingham MA, US
Jun Lu - Medford MA, US
Eric Miska - Cambridge, GB

Assignee:

Massachusetts Institute of Technology - Cambridge MA
Dana-Farber Cancer Institute, Inc., - Boston MA

International Classification:

C12Q 1/68
C12P 19/34

US Classification:

435006000, 435091200

Abstract:

The present invention is directed to novel high-throughput, low-cost, and flexible solution-based methods for RNA expression profiling, including expression of microRNAs and mRNAs.