David Alex Barton

US Patent:

6603421, Aug 5, 2003

Filed:

Jul 28, 1977

Appl. No.:

05/823893

Inventors:

George W. Schiff - Waltham MA
David K. Barton - Lexington MA
Robert E. Millett - Acton MA
Carroll D. Phillips - Weston MA

Assignee:

Raytheon Company - Lexington MA

International Classification:

G01S 728

US Classification:

342 13, 342 62, 342 80, 342 96, 342 97, 342149

Abstract:

A combined defense and navigational system on a naval vessel is disclosed. The disclosed system includes a track-while-scan pulse radar which is controlled to provide either navigational information or tracking information on selected targets. Additionally, the disclosed system includes a plurality of guided missiles, each of which may be vertically launched and directed toward intercept of a selected target either by commands from the track-while-scan radar or from an active guidance system in each such missile.

US Patent:

6771205, Aug 3, 2004

Filed:

Aug 1, 1979

Appl. No.:

06/062843

Inventors:

David K. Barton - Lexington MA
Benjamin L. Young - Westford MA

Assignee:

Raytheon Company - Lexington MA

International Classification:

G01S 738

US Classification:

342 13, 342 80, 342 90, 342 95, 342 96, 342 97, 342133, 342137, 342140, 342149, 342157, 342158

Abstract:

A combined defense and navigational system on a naval vessel is disclosed. The disclosed system includes a track-while-scan pulse radar which is controlled to provide either navigational information or tracking information on selected targets. Additionally, the disclosed system includes a plurality of guided missiles, each of which may be vertically launched and directed toward intercept of a selected target either by commands from the track-while-scan radar or from an active guidance system in each such missile.

US Patent:

7929433, Apr 19, 2011

Filed:

Feb 19, 2009

Appl. No.:

12/388630

Inventors:

David J. Husak - Windham NH, US
Matthew S. Melton - Boulder CO, US
David F. Barton - Longmont CO, US
David Nuechterlein - Longmont CO, US
Syed I. Shah - North Andover MA, US
Jon L. Fluker - Lafayette CO, US

Assignee:

Freescale Semiconductor, Inc. - Austin TX

International Classification:

H04L 12/56

US Classification:

370229

Abstract:

Techniques for performing user-configurable traffic management functions on streams of packets. The functions include multicasting, discard, scheduling, including shaping, and segmentation and reassembly. In the techniques, the functions are not performed directly on the packets of the stream, but instead on descriptors that represent stored packets. Output of descriptors from all traffic queues, including discard traffic queues, is scheduled. Scheduling is done using a hierarchy of schedulers. The form of the hierarchy and the scheduling algorithms used by the schedulers in the hierarchy are both user configurable. As disclosed, the techniques are implemented in a traffic management coprocessor integrated circuit. The traffic manager coprocessor is used with a digital communications processor integrated circuit that performs switching functions. The buffers for the packets are in the digital communications processor.

US Patent:

20040260829, Dec 23, 2004

Filed:

Jul 26, 2004

Appl. No.:

10/475066

Inventors:

David Husak - Windham NH, US
Matthew Melton - Boulder CO, US
David Barton - Longmont CO, US
David Nuechterlein - Longmont CO, US
Syed Shah - North Andover MA, US
Jon Fluker - Lafayette CO, US

International Classification:

G06F015/16

US Classification:

709/232000

Abstract:

Techniques for performing user-configurable traffic management functions on streams of packets. The functions include multicasting, discard, scheduling, including shaping, and segmentation and reassembly. In the techniques, the functions are not performed directly on the packets of the stream, but instead on descriptors that represent stored packets. A packet's descriptor includes at least an identifier for the packet and a specifier for a set of traffic management functions to be performed on the descriptor. The user configures a set of traffic management functions for a traffic queue of descriptors. The specifier in the descriptor specifies a set of traffic management functions by specifying a descriptor queue. In multicasting, a descriptor is copied and placed on more than one traffic queue; with regard to discard, when the discard function associated with a traffic queue determines that a packet is to be discarded, the descriptor is placed in a discard traffic queue. Packets represented by descriptors in a discard traffic queue are discarded from the buffer. Output of descriptors from all traffic queues, including discard traffic queues, is scheduled. Scheduling is done using a hierarchy of schedulers. The form of the hierarchy and the scheduling algorithms used by the schedulers in the hierarchy are both user configurable. As disclosed, the techniques are implemented in a traffic management coprocessor integrated circuit. The traffic manager coprocessor is used with a digital communications processor integrated circuit that performs switching functions. The buffers for the packets are in the digital communications processor. Also disclosed are a modified partial packet discard algorithm and a frame based deficit round robin scheduling algorithm.