Charles David Hester

US Patent:

20020033991, Mar 21, 2002

Filed:

Feb 21, 2001

Appl. No.:

09/790323

Inventors:

Charles Hester - Huntsville AL, US

International Classification:

G02B026/00

US Classification:

359/290000, 359/291000, 359/295000

Abstract:

A memory cell that includes a memory media electronically storing information, and a read unit for reading information in the memory media and converting the read information into an optical signal. The read unit includes a point probe and a spatial light modulator. The point probe reads information from the memory media, which produces a charge at the probe. This charge, corresponding to the information electronically stored in the memory media, is then used to control the operation of the spatial light modulator so that the modulator modulates light to convey the information read from the memory media. The read unit may also include an output amplifier, for amplifying the signal output from the point probe used to control the spatial light modulator. The read unit may also include a drive amplifier, for providing power to the point probe to allow it to write information to the memory media.

US Patent:

52512223, Oct 5, 1993

Filed:

Mar 2, 1992

Appl. No.:

7/843071

Inventors:

Charles F. Hester - Huntsville AL
Steven M. Burke - Huntsville AL

Assignee:

Teledyne Industries, Inc. - Los Angeles CA

International Classification:

H01S 310

US Classification:

372 26

Abstract:

In accordance with the present invention, an optical sensing device and method are provided for processing with extremely low energy requirements. Spontaneous emissions from an excited optical gain medium generate a propagating waveform. Either a spatial modulator or the pattern under investigation modulates the optical wavefront generated by the fluorescing gain medium to impose a first spatial pattern thereon. When the first spatial pattern imposed on the wavefront has duality with another spatial pattern imposed by the other of the pattern under investigation or the SLM, light is directed back along pathways through a cavity defined by the gain medium, a reflector, the SLM, and the object under investigation to induce stimulated emission and eventually resonance in the cavity.

US Patent:

52456269, Sep 14, 1993

Filed:

Apr 1, 1991

Appl. No.:

7/678706

Inventors:

Steven M. Burke - Huntsville AL
Charles F. Hester - Huntsville AL

Assignee:

Teledyne Industries, Inc. - Los Angeles CA

International Classification:

H01S 308

US Classification:

372 92

Abstract:

In accordance with the present invention, an optical processing device and method are provided for processing with extremely low energy requirements. Spontaneous emissions from an excited optical gain medium generate a waveform that propagates within a cavity defined by the gain medium and a reflective device. A first spatial modulating element is disposed in the cavity in the path of the generated wavefront to impose a first spatial pattern thereon. A second spatial modulating element also is disposed in the cavity and imposes a second spatial pattern on the perturbed wavefront carrying the first pattern. When the first and second imposed spatial patterns have dual spatial pattterns, light is directed back along pathways through the cavity to induce stimulated emission and eventually resonance in the cavity.

US Patent:

44874766, Dec 11, 1984

Filed:

Apr 28, 1981

Appl. No.:

6/258500

Inventors:

Charles F. Hester - Huntsville AL
David P. Casasent - Pittsburgh PA

Assignee:

The United States of America as represented by the Secretary of the Air
Force - Washington DC

International Classification:

G06G 900

US Classification:

35016213

Abstract:

A method of recognizing different perspective views or images (i. e. , multivariant views) of the same object (i. e. , intraclass patterns). Each intraclass pattern, or different representation of the same object, is described as an orthonormal basis function expansion, and a single averaged matched spatial filter is produced from a weighted linear combination of these functions. The method eliminates the multiple matched spatial filters, and the extensive postprocessing of the matrix output from a multichannel correlator, which are used in the prior art.

US Patent:

51328135, Jul 21, 1992

Filed:

Dec 19, 1990

Appl. No.:

7/631104

Inventors:

H. John Caulfield - Huntsville AL
Charles F. Hester - Huntsville AL
Jason M. Kinser - Huntsville AL
Joseph Shamir - Huntsville AL

Assignee:

Teledyne Industries, Inc. - Los Angeles CA

International Classification:

G03H 112

US Classification:

359 11

Abstract:

An optical apparatus for simulating a highly interconnected neural network is disclosed as including a spatial light modulator (SLM), an inputting device, a laser, a detecting device, and a page-oriented holographic component. The inputting device applies input signals to the SLM. The holographic component optically interconnects N. sup. 2 pixels defined on the spatial light modulator to N. sup. 2 pixels defined on a detecting surface of the detecting device. The interconnections are made by N. sup. 2 patterns of up to N. sup. 2 interconnection weight encoded beams projected by N. sup. 2 planar, or essentially two-dimensional, holograms arranged in a spatially localized array within the holographic component. The SLM modulates the encoded beams and directs them onto the detecting surface wherein a parameter of the beams is evaluated at each pixel thereof. The evaluated parameter is transformed according to a nonlinear threshold function to provide transformed signals which can be fed back to the SLM for further iterations.

US Patent:

50688014, Nov 26, 1991

Filed:

Nov 6, 1989

Appl. No.:

7/431899

Inventors:

Rodney L. Clark - Huntsville AL
Charles F. Hester - Huntsville AL

Assignee:

Teledyne Industries, Inc. - Los Angeles CA

International Classification:

G06E 300

US Classification:

395 25

Abstract:

A variable weight optical interconnector is disclosed to include a projecting device and an interconnection weighting device remote from the projecting device. The projecting device projects a distribution of interconnecting light beams when illuminated by a spatially-modulated light pattern. The weighting device includes a photosensitive screen provided in optical alignment with the projecting device to independently control the intensity of each projected interconnecting beam to thereby assign an interconnection weight to each such beam. Further in accordance with the present invention, a highly-interconnected optical neural network having learning capability is disclosed as including a spatial light modulator, a detecting device, an interconnector according to the present invention, and a device responsive to detection signals generated by the detecting device to modify the interconnection weights assigned by the photosensitive screen of the interconnector.

US Patent:

52354407, Aug 10, 1993

Filed:

Jul 24, 1991

Appl. No.:

7/735272

Inventors:

Rodney L. Clark - Huntsville AL
Charles F. Hester - Huntsville AL

Assignee:

Teledyne Industries, Inc. - Los Angeles CA

International Classification:

G03H 112
G03H 102

US Classification:

359 11

Abstract:

A variable weight optical interconnector is disclosed to include a projecting device and an interconnection weighting device remote from the projecting device. The projecting device projects a distribution of interconnecting light beams when illuminated by a spatially-modulated light pattern. The weighting device includes a photosensitive screen provided in optical alignment with the projecting device to independently control the intensity of each projected interconnecting beam to thereby assign an interconnection weight to each such beam. Further in accordance with the present invention, a highly-interconnected optical neural network having learning capability is disclosed as including a spatial light modulator, a detecting device, an interconnector according to the present invention, and a device responsive to detection signals generated by the detecting device to modify the interconnection weights assigned by the photosensitive screen of the interconnector.

US Patent:

50043099, Apr 2, 1991

Filed:

Jun 13, 1989

Appl. No.:

7/365441

Inventors:

H. John Caulfield - Huntsville AL
Charles F. Hester - Huntsville AL
Jason M. Kinser - Huntsville AL
Joseph Shamir - Huntsville AL

Assignee:

Teledyne Brown Engineering - AL

International Classification:

G03H 112

US Classification:

350 368

Abstract:

An optical apparatus for simulating a highly interconnected neural network is disclosed as including a spatial light modulator (SLM), an inputting device, a laser, a detecting device, and a page-oriented hologaphic component. The inputting device applies input signals to the SLM. The holographic component optically interconnects N. sup. 2 pixels defined on the spatial light modulator to N. sup. 2 pixels defined on a detecting surface of the detecting device. The interconnections are made by N. sup. 2 patterns of up to N. sup. 2 interconnection weight encoded beams projected by N. sup. 2 planar, or essentially two-dimensional, holograms arranged in a spatially localized array within the holographic component. The SLM modulates the encoded beams and directs them onto the detecting surface wherein a parameter of the beams is evaluated at each pixel thereof. The evaluated parameter is transformed according to a nonlinear threshold function to provide transformed signals which can be fed back to the SLM for further iterations.

Author:

Charles I. Hester

ISBN #:

0815512465