Patents by Inventor David W. Richards

David W. Richards has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9384416
    Abstract: The present invention includes an automated method for grading the blurring of ocular fundus images to permit automated grading of severity of vitritis. Standard fundoscopic images are converted to gray-scale images. The gray-scale images are processed through a low-pass filter to eliminate high frequency components. The low pass image is subtracted from the corresponding original image, producing the difference image. The difference image is converted to the final entropy image. The entropy image is processed using Fast Fourier Transform to calculate its power. The final blur score is calculated.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: July 5, 2016
    Assignee: University of South Florida
    Inventors: Christopher L. Passaglia, Brian Madow, David W. Richards, Erin L. Greenberg
  • Patent number: 8286029
    Abstract: In some embodiments, storage devices, such as a storage drive or a storage node, in an array of storage devices may be reintroduced into the array of storage devices after a period of temporary unavailability without fully rebuilding the entire previously unavailable storage device.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: October 9, 2012
    Assignee: EMC Corporation
    Inventors: Robert J. Anderson, Neal T. Fachan, Peter J. Godman, Justin M. Husted, Aaron J. Passey, David W. Richards, Darren P. Schack
  • Patent number: 8010493
    Abstract: In one embodiment, a user or client device is connected to a distributed file system comprised of one or more physical nodes. The data on each of the physical nodes store metadata about files and directories within the file system. Some of the embodiments permit a user to take a snapshot of data stored on the file system. The snapshot may include a single file, a single directory, a plurality of files within a directory, a plurality of directories, a path on the file system that includes nested files and subdirectories, or more than one path on the file system that each includes nested files and directories. In one embodiment, the metadata comprises mini-snapshots for directories representing a path from the root of the file system to the root of the snapshot. The mini-snapshots serve as stand-ins for portions of the file system which are not included in the snapshot, but which permit access to the snapshot data in an intuitive way.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: August 30, 2011
    Assignee: EMC Corporation
    Inventors: Robert J. Anderson, Neal T. Fachan, Eric M. Lemar, Aaron J. Passey, David W. Richards, Darren P. Schack
  • Patent number: 7953704
    Abstract: In one embodiment, a user or client device is connected to a distributed file system comprised of one or more physical nodes. The data on each of the physical nodes store metadata about files and directories within the file system. Some of the embodiments permit a user to take a snapshot of data stored on the file system. The snapshot may include a single file, a single directory, a plurality of files within a directory, a plurality of directories, a path on the file system that includes nested files and subdirectories, or more than one path on the file system that each includes nested files and directories. According to one embodiment, the system stores and updates metadata, including a governance list, for each of the files and directories. The governance list provides a representation of the snapshots which govern a file or directory and its descendants.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: May 31, 2011
    Assignee: EMC Corporation
    Inventors: Robert J. Anderson, Neal T. Fachan, Eric M. Lemar, Aaron J. Passey, David W. Richards, Darren P. Schack
  • Publication number: 20100161556
    Abstract: In one embodiment, a user or client device is connected to a distributed file system comprised of one or more physical nodes. The data on each of the physical nodes store metadata about files and directories within the file system. Some of the embodiments permit a user to take a snapshot of data stored on the file system. The snapshot may include a single file, a single directory, a plurality of files within a directory, a plurality of directories, a path on the file system that includes nested files and subdirectories, or more than one path on the file system that each includes nested files and directories. In one embodiment, the metadata comprises mini-snapshots for directories representing a path from the root of the file system to the root of the snapshot. The mini-snapshots serve as stand-ins for portions of the file system which are not included in the snapshot, but which permit access to the snapshot data in an intuitive way.
    Type: Application
    Filed: March 4, 2010
    Publication date: June 24, 2010
    Inventors: Robert J. Anderson, Neal T. Fachan, Eric M. Lemar, Aaron J. Passey, David W. Richards, Darren P. Schack
  • Patent number: 7680842
    Abstract: In one embodiment, a user or client device is connected to a distributed file system comprised of one or more physical nodes. The data on each of the physical nodes store metadata about files and directories within the file system. Some of the embodiments permit a user to take a snapshot of data stored on the file system. The snapshot may include a single file, a single directory, a plurality of files within a directory, a plurality of directories, a path on the file system that includes nested files and subdirectories, or more than one path on the file system that each includes nested files and directories. In one embodiment, the metadata comprises mini-snapshots for directories representing a path from the root of the file system to the root of the snapshot. The mini-snapshots serve as stand-ins for portions of the file system which are not included in the snapshot, but which permit access to the snapshot data in an intuitive way.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: March 16, 2010
    Assignee: Isilon Systems, Inc.
    Inventors: Robert J. Anderson, Neal T. Fachan, Eric M. Lemar, Aaron J. Passey, David W. Richards, Darren P. Schack
  • Patent number: 7402241
    Abstract: A water purification device including a water inlet that receives water generated by a condenser. The water purification device has a water heating apparatus that receives water from the water inlet. The water heating device has a thermal energy source that can pasteurize or flash pasteurize the water by heating the water to a predetermined temperature for a predetermined length of time. The water heating device expels the water at the end of the predetermined length of time.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: July 22, 2008
    Assignee: Aquamagic, Inc.
    Inventors: Jonathan P. Wright, David W. Richards, Brent L. Cannell
  • Publication number: 20080155191
    Abstract: Embodiments of the present invention provide systems and methods for using heterogeneous containers where the available space on the containers is of two or more different sizes. In some embodiments, the heterogeneous containers may store some data under one protection scheme and other data under one or more other data protection schemes.
    Type: Application
    Filed: December 21, 2006
    Publication date: June 26, 2008
    Inventors: Robert J. Anderson, Nate E. Dire, Neal T. Fachan, Peter J. Godman, Aaron J. Passey, David W. Richards, Darren P. Schack
  • Publication number: 20080151724
    Abstract: In some embodiments, storage devices, such as a storage drive or a storage node, in an array of storage devices may be reintroduced into the array of storage devices after a period of temporary unavailability without fully rebuilding the entire previously unavailable storage device.
    Type: Application
    Filed: December 21, 2006
    Publication date: June 26, 2008
    Inventors: Robert J. Anderson, Neal T. Fachan, Peter J. Godman, Justin M. Husted, Aaron J. Passey, David W. Richards, Darren P. Schack
  • Publication number: 20080046475
    Abstract: In one embodiment, a user or client device is connected to a distributed file system comprised of one or more physical nodes. The data on each of the physical nodes store metadata about files and directories within the file system. Some of the embodiments permit a user to take a snapshot of data stored on the file system. The snapshot may include a single file, a single directory, a plurality of files within a directory, a plurality of directories, a path on the file system that includes nested files and subdirectories, or more than one path on the file system that each includes nested files and directories.
    Type: Application
    Filed: August 18, 2006
    Publication date: February 21, 2008
    Inventors: Robert J. Anderson, Neal T. Fachan, Eric M. Lemar, Aaron J. Passey, David W. Richards, Darren P. Schack
  • Publication number: 20080046432
    Abstract: In one embodiment, a user or client device is connected to a distributed file system comprised of one or more physical nodes. The data on each of the physical nodes store metadata about files and directories within the file system. Some of the embodiments permit a user to take a snapshot of data stored on the file system. The snapshot may include a single file, a single directory, a plurality of files within a directory, a plurality of directories, a path on the file system that includes nested files and subdirectories, or more than one path on the file system that each includes nested files and directories.
    Type: Application
    Filed: August 18, 2006
    Publication date: February 21, 2008
    Inventors: Robert J. Anderson, Neal T. Fachan, Eric M. Lemar, Aaron J. Passey, David W. Richards, Darren P. Schack
  • Patent number: 6709109
    Abstract: The present invention includes a method of detecting nerve cell damage representative of glaucoma including the steps of: imaging a human retina in vivo, measuring the reflected light intensity at a first predetermined wavelength wherein values returned from healthy and damaged areas of retina are substantially identical, measuring a second reflected light intensity at a predetermined wavelength wherein values of healthy and damaged retina substantially diverge, and recording the differences between the first and second values, which values are indicative of glaucoma damage.
    Type: Grant
    Filed: April 16, 2003
    Date of Patent: March 23, 2004
    Assignee: University of South Florida
    Inventors: David W. Richards, Dennis K. Killinger, Anali Makoui, Wyatt Saxon
  • Patent number: 6553639
    Abstract: A method of manufacturing a leaf seal for use between rotating components comprises forming corrugations within a metallic strip and feeding the corrugated strip into a seal guide. The corrugated strip is then pressed into the guide by an angled ram such that the corrugations lie at an acute angle to the perpendicular axis. The strip is then secured in a seal carrier, the free ends of the corrugations thus forming the angled sealing leaves of a leaf seal.
    Type: Grant
    Filed: July 18, 2001
    Date of Patent: April 29, 2003
    Assignee: Rolls-Royce, plc
    Inventors: John Hobbs, David W Richards
  • Patent number: 6387474
    Abstract: An external top coating on a toy vehicle provides a multi-color or hue variation dependent upon the angle at which illuminating rays or energy strike the coating. The coating is applied directly over previously applied color coating and application may be by spray, brush or airbrush. The external coating is characterized as combining a plurality of pigments into a carrying medium which is then applied to the exposed surface of a previously coated toy vehicle. The multi-pigmented coating includes a thin transparence or glaze of protective material so that the multi-hue or colored layer is not readily scratched or marred. A feature resides in that the multi-pigmented or hued coating is sufficiently transparent or translucent in order to provide design ornamentation applied with the conventional pre-coating to be seen therethrough.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: May 14, 2002
    Inventor: David W. Richards
  • Publication number: 20020014009
    Abstract: A method of manufacturing a leaf seal for use between rotating components comprises forming corrugations within a metallic strip and feeding the corrugated strip into a seal guide. The corrugated strip is then pressed into the guide by an angled ram such that the corrugations lie at an acute angle to the perpendicular axis. The strip is then secured in a seal carrier, the free ends of the corrugations thus forming the angled sealing leaves of a leaf seal.
    Type: Application
    Filed: July 18, 2001
    Publication date: February 7, 2002
    Applicant: ROLLS-ROYCE PLC
    Inventors: John Hobbs, David W. Richards
  • Patent number: 5596486
    Abstract: An improved PC Card element, particularly a PC card unit, is presented in which the unit is hermetically sealed. The unit has a metallic frame, a metallic header with glass or ceramic encapsulated through pins, and opposed outer metallic covers, all of the metallic elements being welded together to form a hermetically sealed unit. The metallic frame and header is preferably formed as a single piece, i.e., unitary part, either by casting and machining or by metal injection molding.
    Type: Grant
    Filed: October 5, 1994
    Date of Patent: January 21, 1997
    Assignee: Kaman Aerospace Corporation
    Inventors: Paul R. Young, David W. Richard, Leonard Bazar
  • Patent number: 5024518
    Abstract: An instrument and method for examining the optic nerve head (34) of a patient's eye (14) is disclosed. The instrument is comprised of a gonioscopic lens (10) a lens system (26) where the lens system (26) directs a collimated beam of light towards a point (32) away from the center line (28) through the gonioscopic lens (10) and eye (14). When the patient fixates on the beam of light (32), the ophthalmologist can examine the optic nerve head (34) through the gonioscopic lens (10).
    Type: Grant
    Filed: March 22, 1990
    Date of Patent: June 18, 1991
    Assignees: Center for Innovative Technology, Virginia Commonwealth University, Virginia Polytechnic Institute and State University
    Inventors: David W. Richards, Kent A. Murphy
  • Patent number: 4965686
    Abstract: A disc drive assembly for a magnetic disc memory unit is presented. The disc drive assembly has a stationary spindle to which a motor stator assembly is fastened by a wedge ring structure. The motor rotor assembly is constituted by a rotary hub mounted around the stator, the hub having a motor magnet mounted therein. A plurality of magnetic discs may be mounted on the exterior of the hub.
    Type: Grant
    Filed: March 31, 1989
    Date of Patent: October 23, 1990
    Assignee: Raymond Engineering Inc.
    Inventors: Paul R. Young, David W. Richard, Arthur J. Treff, Christopher E. Staehly
  • Patent number: 4870703
    Abstract: A magnetic disc memory unit is presented wherein a pair of read/write heads are on a pivot arm which is belt driven by a stepper motor. The read/write heads move in an arc, and they retract to a landing position fully off the disc when the unit is shut down. The unit incorporates several features to overcome or minimize vibration and temperature problems so that the unit is suitable for operation in extreme vibration and temperature environments and in all attitudes. These features include, but are not limited to, a rotary table and a rotary mounted spindle made from different materials and joined by a cryogenic joint; pre-loaded elastomeric "O" rings; an electrically conductive ball used for grounding the disc support to the housing; and a single continuous split belt connected between the output of the stepper motor and the pivot arm.
    Type: Grant
    Filed: October 12, 1988
    Date of Patent: September 26, 1989
    Assignee: Raymond Engineering Inc.
    Inventors: James A. Augeri, Paul R. Young, David W. Richard, David Johnson
  • Patent number: 3955723
    Abstract: An ignition spark advance system is disclosed which includes pulse generating means responsive to rotation of the shaft of an internal combustion engine for generating a first train of pulses including a first reference pulse and a plurality of additional pulses and a second train of pulses indicative of the angular position of the shaft of the engine. Timing means are provided for measuring the passage of a predetermined fixed time period after the occurrence of the first reference pulse in the first train of pulses.
    Type: Grant
    Filed: November 29, 1974
    Date of Patent: May 11, 1976
    Assignee: Teledyne Industries, Inc.
    Inventor: David W. Richards