Patents by Inventor David Chew

David Chew 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).

  • RAID system and method compatible with improved drive select
    Patent number: 8065481
    Abstract: A RAID system is provided which can be implemented as a hardware RAID system while avoiding certain shortcomings of previous RAID systems. The RAID system makes it possible to avoid or reduce the number of buffers or processors and can take advantage of drive logic to achieve RAID functions or enhancements. RAID functionality can be provided in a manner to accommodate one or more ATA drive interfaces. To avoid drive replacement problems, host requests for drive serial numbers are responded to with a mirror serial number. In one embodiment, the read address is used to select which drive will perform a read operation.
    Type: Grant
    Filed: April 20, 2004
    Date of Patent: November 22, 2011
    Assignee: Seagate Technology LLC
    Inventors: Bernhard Hiller, Pantelis Alexopoulos, Don Brunnett, Chandra Buddhavaram, Thierry Chatard, David Chew, Samuel R. Duell, Jeff Griffiths, Johanna Hernandez, Robert L. Kimball, Eric Kvamme, LeRoy Leach, Michael Lee, James McGrath, Kathleen Fitzgerald, legal representative, Robert Milby, Bruce Schardt, Maurice Schlumberger, Erhard Schreck, Richard Sonnenfeld
  • Low-profile rotary motor with fixed back iron
    Patent number: 7876532
    Abstract: A rotary actuator motor is provided including a stationary coil section and a rotating magnet. The magnet is incorporated with the pivot bearing assembly, and the coil section is aligned with the magnet along an axis of rotation of the actuator. The magnet fully encircles the axis of rotation. The coil comprises one or more closed loops of electrically conductive material. The motor in this arrangement maintains a much smaller profile in comparison to a traditional voice coil motor that is mounted to a yoke extending away from the axis of rotation of the actuator.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: January 25, 2011
    Assignee: Seagate Technology LLC
    Inventors: John E. Scura, John Beley, David Chew, Wendy Lorimer, Babu Rahman, Frank Ivan Morris
  • Rotary Actuator Motor For Disk Drive
    Publication number: 20070159728
    Abstract: A rotary actuator motor is provided including a stationary coil section and a rotating magnet. The magnet is incorporated with the pivot bearing assembly, and the coil section is aligned with the magnet along an axis of rotation of the actuator. The magnet fully encircles the axis of rotation. The coil comprises one or more closed loops of electrically conductive material. The motor in this arrangement maintains a much smaller profile in comparison to a traditional voice coil motor that is mounted to a yoke extending away from the axis of rotation of the actuator.
    Type: Application
    Filed: March 20, 2007
    Publication date: July 12, 2007
    Inventors: John Scura, John Beley, David Chew, Wendy Lorimer, Babu Rahman, Frank Morris
  • Apparatus And Method For Locating, Identifying And Tracking Vehicles In A Parking Area
    Publication number: 20070061192
    Abstract: A method for use in the management of vehicle parking in a vehicle parking area having a plurality of vehicle parking spaces, the method comprising determining the locations of vacant vehicle parking spaces; and displaying the locations of vacant vehicle parking spaces to people seeking to park vehicles.
    Type: Application
    Filed: November 2, 2006
    Publication date: March 15, 2007
    Applicant: STRATECH SYSTEMS LIMITED
    Inventor: David Chew
  • Method and system for monitoring the movement of people
    Publication number: 20060055512
    Abstract: A method of monitoring the movement of people, comprising: obtaining, at a first point along the movement of people from a public area to a secure area, biometric data of individual people and associated identification data; obtaining, at a second point in the secure area, biometric data of individual people and associated identification data; and comparing identification data obtained at the second point with that obtained at the second point, and, where a match is made, comparing the associated image obtained at the first point with the associated image obtained at the second point for the matched identification data.
    Type: Application
    Filed: September 10, 2004
    Publication date: March 16, 2006
    Applicant: STRATECH SYSTEMS LIMITED
    Inventor: David Chew
  • Apparatus and method for locating, identifying and tracking vehicles in a parking area
    Publication number: 20050083212
    Abstract: A method for use in the management of vehicle parking in a vehicle parking area having a plurality of vehicle parking spaces, the method comprising determining the locations of vacant vehicle parking spaces; and displaying the locations of vacant vehicle parking spaces to people seeking to park vehicles.
    Type: Application
    Filed: September 3, 2004
    Publication date: April 21, 2005
    Applicant: Stratech Systems Limited
    Inventor: David Chew