Oliver T Slattery

US Patent:

6776619, Aug 17, 2004

Filed:

May 16, 2000

Appl. No.:

09/572048

Inventors:

John W. Roberts - Damascus MD
Oliver T. Slattery - Gaithersburg MD
David W. Kardos - Columbia MD

Assignee:

United States of America - Washington DC

International Classification:

G09B 2100

US Classification:

434113, 434112, 434114, 34082519

Abstract:

Apparatus and method for refreshable tactile display are disclosed, the apparatus being preferably embodied as a rotating-wheel refreshable Braille reader. The reader includes a housing having a reading aperture with a rotatable wheel assembly maintained therein so that a display surface of a rotating wheel passes the reading aperture. The wheel has endless rows of openings defined therethrough to the display surface, a pin held in each opening and freely movable therein. Actuators, at least equal in number to the rows of openings but substantially fewer in number than the openings, are held at a static location relative to the wheel for selectively moving pins in the rows so that Braille characters are arrayed at the display surface after passing the static location. Braille characters are thus streamed across the reading aperture of the housing.

US Patent:

7009595, Mar 7, 2006

Filed:

Jan 2, 2003

Appl. No.:

10/335688

Inventors:

John W. Roberts - Gaithersburg MD, US
Oliver T. Slattery - Germantown MD, US
Bretton Swope - Gaithersburg MD, US
David W. Kardos - Sykesville MD, US
Volker Min - Heiloo, NL
Michael Sutton - Welwyn Garden, GB
Edwin C. Mulkens - Uene, NL
Gina Rodgers - Chesapeake VA, US
Nicholas Guttenberg - Gaithersburg MD, US
Tracy Comstock - Cockeysville MD, US

Assignee:

United States of America - Washington DC

International Classification:

G09G 5/00

US Classification:

345156, 715702

Abstract:

Apparatus and methods for extended refreshable tactile graphic display are disclosed, the apparatus including an array of pins at a display surface, with pin setting actuators and display surface matrix preferably being separable units. The display matrix is provided by stacked functional layers, functions including temporary pin retention and pin locking.

US Patent:

20020045151, Apr 18, 2002

Filed:

Aug 6, 2001

Appl. No.:

09/921802

Inventors:

John Roberts - Damascaus MD, US
Oliver Slattery - Gaithersburg MD, US
David Kardos - Columbia MD, US
Edwin Mulkens - Gaithersburg MD, US
Bretton Swope - Gaithersburgh MD, US

International Classification:

G09B021/00

US Classification:

434/113000

Abstract:

A refreshable Braille reader apparatus and method are disclosed, the apparatus preferably utilizing a rotating cylinder having endless rows of openings defined therethrough to a display surface with a pin held in each opening and freely movable therein. Static actuators at least equal in number to the rows of openings through the cylinder are maintained at a station adjacent to the surface of the cylinder, and are configured and positioned so that the pins are selectively contactable at either of their ends by different ones of the actuators during cylinder rotation in either forward or reverse direction thereby selectively positioning first ends of the pins relative to the surface of the cylinder to allow streaming of Braille text across a display area in either forward or backward order depending upon selected direction of cylinder rotation.

US Patent:

20190376846, Dec 12, 2019

Filed:

Jul 19, 2018

Appl. No.:

16/039391

Inventors:

- Gaithersburg MD, US
XIAO TANG - GAITHERSBURG MD, US
OLIVER SLATTERY - GAITHERSBURG MD, US

International Classification:

G01J 3/02
G01J 3/10
G01J 3/42

Abstract:

A direct absolute spectrometer includes: a first light source; a second light source; an optical combiner that produces dual light; an optical cell that receives the dual light; an electromagnetically induced transparent medium that is optically transparent to single photon light in a presence of pump light, such that output light is produced; and a filter that filters output light and provides EIT light free from, wherein electromagnetically induced transparent EIT light is a direct and absolute metric of a linewidth and a wavelength of single photon light such that the direct absolute spectrometer provides direct and absolute determination of the linewidth of the single photon light and direct and absolute determination of wavelength at a maximum of intensity of the single photon light.