David J Warren

US Patent:

7542958, Jun 2, 2009

Filed:

Sep 11, 2003

Appl. No.:

10/660305

Inventors:

David S. Warren - Stony Brook NY, US
Terrance L. Swift - Great Falls VA, US
Tatyana Vidrevich - Port Jefferson NJ, US
Iv Ramakrishnan - Setauket NY, US
L. Robert Pokorny - Calverton NY, US
Alex Beggs - Setauket NY, US
Christopher Rued - East Setauket NY, US
Michael Epstein - East Northport NY, US
Harpreet Singh - Elmont NY, US
Hasan Davulcu - Tempe AZ, US

Assignee:

XSB, Inc. - Stony Brook NY

International Classification:

G06N 5/02
G06F 17/21

US Classification:

706 48, 706 61

Abstract:

The invention includes methods and software tools for acquiring data from diverse sources, and structuring the data in a form that may be used to determine object equivalence. Practice of the invention includes one or more of the following tools: a data acquisition web agent creator, a web agent created by the web agent creator, an agent manager for deploying said web agent, and ontology-directed classifier, an ontology-directed extractor, and an ontology-directed matcher. The tools are example driven through a graphical user interface.

US Patent:

7609381, Oct 27, 2009

Filed:

Mar 20, 2008

Appl. No.:

12/052705

Inventors:

David Wheeler Warren - Los Angeles CA, US

Assignee:

The Aerospace Corporation - El Segundo CA

International Classification:

G01J 3/28
G01J 3/18

US Classification:

356328

Abstract:

A spectrometer apparatus includes a refractor element, a slit, a detector, a diffraction grating, and a corrector lens. The refractor element includes a rear surface and a front surface. The slit provides an optical path to the rear surface of the refractor element, and is configured to transmit an image incident thereupon along the optical path. The detector is positioned facing the rear surface of the refractor element. The diffraction grating faces the front surface of the refractor element, and is configured to spectrally disperse and reimage the image of the slit toward the front surface of the refractor element. The corrector lens is positioned between the refractor element and the diffraction grating such that the image is provided to the detector corrected for a spherical aberration caused by a separation distance between the detector and the rear surface of the refractor element.

US Patent:

7761782, Jul 20, 2010

Filed:

Oct 25, 2005

Appl. No.:

11/257923

Inventors:

David S. Warren - Stony Brook NY, US
Iyer Venkat Ramakrishnan - Setauket NY, US
Coimbatore Rajamani Ramakrishnan - Mount Sinai NY, US

Assignee:

XSB, Inc. - Stony Brook NY

International Classification:

G06F 17/00

US Classification:

715212, 715213, 715219, 715220

Abstract:

A user programmable deductive spreadsheet is implemented as an add-in to an existing mathematical spreadsheet program and allows the use of a logic programming language such as Prolog via a familiar spreadsheet interface. A syntax is provided whereby a set of multiple values can be stored in a cell and can be operated on recursively by an expression in another cell. Rows and columns can be given user defined names and cells can be referenced by row and column name. Cells can reference cells in other spreadsheets or can reference an entire spreadsheet in one cell. A cell expression can reference itself. Logical, arithmetic, and lifted operators are provided. Spreadsheets can be defined as a transformation of another spreadsheet. When no negative or aggregate operators are used in the cell expressions, the meaning of the spreadsheet is given in terms of least fixed points. Otherwise, the meaning is given in terms of perfect models.

US Patent:

51277280, Jul 7, 1992

Filed:

Jan 18, 1990

Appl. No.:

7/467063

Inventors:

David W. Warren - Los Angeles CA
John A. Hackwell - Rancho Palos Verdes CA

Assignee:

The Aerospace Corporation - El Segundo CA

International Classification:

G01J 312

US Classification:

356302

Abstract:

A device for the spectral dispersion of light suitable for use in a spectrographic mode with arrays of solid state photo-detectors. Light from an entrance aperture passes through a dispersing prism with two curved, refracting surfaces both operating near their aplanatic conjugates. After being reflected by a concave mirror located behind the prism, light returns through the prism in the opposite direction, the refractions at each face again being nearly aplanatic. Spectrally dispersed images of the entrance aperture are formed on a plane well separated from the entrance aperture and nearly normal to the incident light rays. Good image quality is maintained over a broad range of operating wavelengths simultaneously, allowing large spectral intervals to be surveyed without moving any of the elements of the system.

US Patent:

56402830, Jun 17, 1997

Filed:

Oct 20, 1995

Appl. No.:

8/546426

Inventors:

David Wheeler Warren - Los Angeles CA

Assignee:

The Aerospace Corporation - El Segundo CA

International Classification:

G02B 1700
G02B 510

US Classification:

359859

Abstract:

An all reflective telescope system generally includes two spherical mirrors, one mild aspheric mirror and one aspheric mirror all centered about a common telescope axis and imaging on a focal surface for easy manufacture, very long focal length, wide field of view, high resolution, compact volume and low weight particularly well suited for space observations, and in a detailed form includes a sectional concave hyberboloidal primary mirror, a circular mild convex ellipsoidal secondary mirror, a sectional concave spherical tertiary mirror and a sectional convex spherical quaternary mirror for focusing an extended distant object onto a concave cylindrical focal surface having a linear array of charge coupled detectors for high resolution imagery, the telescope having high performance operation near diffraction limits and operating at detector resolution limits.

US Patent:

48295680, May 9, 1989

Filed:

Sep 5, 1986

Appl. No.:

6/904519

Inventors:

John I. Clark - Milford CT
Alton B. Eckert - Norwalk CT
David M. Warren - Woodmere NY

Assignee:

Pitney Bowes - Stamford CT

International Classification:

G06F 900

US Classification:

380 23

Abstract:

A system for the metering of encrypted postage and similar indicia includes a device for printing such indicia and a device for reading such indicia. The printing is accomplished with a dot matrix printer driven by signals obtained by altering character generation signals with encryption signals. The interleaving is accomplished on a row-by-row basis by inserting delays from an encryption circuit into signals from a character generator circuit. The reading is accomplished by correlating received characters against a stored array of a symbols to determine the presence of a symbol, the extraction of coded data from character data of the received and identified character, and the comparison of the separated coded data with a reference code to determine the accuracy of the printed material. Thereby, forgery and alteration is inhibited. The coding is accomplished with the dot matrix format of the characters by displacing some of the dots slightly from the remainder so as to retain the general form of the character for recognition of the character while the displaced dots serve as the code for the encryption.

US Patent:

47939087, Dec 27, 1988

Filed:

Dec 29, 1986

Appl. No.:

6/947141

Inventors:

Gene Scott - El Toro CA
Charles W. Kohlenberger - Fullerton CA
David M. Warren - Chino Hills CA

Assignee:

Rockwell International Corporation - El Segundo CA

International Classification:

C23C 1446

US Classification:

20419226

Abstract:

A method of fabricating multiple layer, solid, thin films on a substrate having a surface to be coated, the method providing control over the thickness, stoichiometry, and morphology of each separate layer formed by a method comprising steps: A. forming a first ion beam from an inert gas; B, bombarding a target surface with said first ion beam in a vacuum chamber to generate a vapor cloud composed of the target material atoms by the process of sputtering; C. adjusting the respective positions of the substrate surface for coating and the target surface to promote the condensation of the vapor upon the substrate surface for coating; D. forming a second ion beam, the second ion beam's ions being formed from a mixture of inert and reactive gases; E. bombarding the substrate surface simultaneously with the second ion beam to promote a chemical reaction between the target vapor atoms and the chemically reactive gas ions as the target atoms and the chemically reactive gas ions impinge upon the substrate surface for coating, the resulting chemical compound building up in thickness as a homogeneous thin solid film layer; F. positioning an alternative target material in the place occupied by the previous one; G.

US Patent:

43177000, Mar 2, 1982

Filed:

Aug 20, 1980

Appl. No.:

6/179843

Inventors:

Kunihide Tanaka - Irvine CA
Michael T. Elliott - Carbon Canyon CA
Sam Chung - Costa Mesa CA
James Pau - Irvine CA
Linda Gray - Fullerton CA
Liping D. Hou - Seal Beach CA
Mary F'Mayer - Garden Grove CA
David Warren - Fullerton CA
Karen Finch - Mission Viejo CA

Assignee:

Rockwell International Corporation - El Segundo CA

International Classification:

B44C 122
C03C 1500
C03C 2506

US Classification:

156652

Abstract:

A method of fabricating a bubble domain device composite structure on a substrate of depositing a barrier layer of a suitable polymeric dielectric material on the substrate; subsequently depositing a layer of electrically conductive material thereover; subsequently depositing a spacer layer of a liquid polymeric dielectric material over the conductive layer; processing the spacer layer so that the surface of the spacer layer is substantially planar; and subsequently depositing a layer of a magnetically operative material over the spacer layer.