Patents by Inventor James MacMillan

James MacMillan 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: 11624812
    Abstract: A method and apparatus for quantitatively characterizing performance of a laser steering galvanometer mirror directs a laser beam from a calibration “sensor” onto a side region of the mirror to directly determine rotational positioning, velocity, and/or acceleration thereof using interferometry, time-of-flight measurements, and Doppler measurements. Measured positioning errors can be compared with a database to predict required calibration adjustments. Embodiments automatically adjust digital calibrations. Mirrors, splitters, and/or a plurality of sensors can apply measurement beams simultaneously or sequentially to both sides of a mirror, and/or to more than one mirror. Large rotation ranges, for example larger than +/?15 degrees, can be accommodated by applying measurement beams from a plurality of directions. The calibration apparatus can be distinct, or integral with the galvanometer, and can be used to monitor and/or to control the mirror positioning.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: April 11, 2023
    Inventors: James MacMillan, Leonard Williams
  • Publication number: 20200103509
    Abstract: A method and apparatus for quantitatively characterizing performance of a laser steering galvanometer mirror directs a laser beam from a calibration “sensor” onto a side region of the mirror to directly determine rotational positioning, velocity, and/or acceleration thereof using interferometry, time-of-flight measurements, and Doppler measurements. Measured positioning errors can be compared with a database to predict required calibration adjustments. Embodiments automatically adjust digital calibrations. Mirrors, splitters, and/or a plurality of sensors can apply measurement beams simultaneously or sequentially to both sides of a mirror, and/or to more than one mirror. Large rotation ranges, for example larger than +/?15 degrees, can be accommodated by applying measurement beams from a plurality of directions. The calibration apparatus can be distinct, or integral with the galvanometer, and can be used to monitor and/or to control the mirror positioning.
    Type: Application
    Filed: June 13, 2018
    Publication date: April 2, 2020
    Inventors: James MacMillan, Leonard Williams
  • Patent number: 7302778
    Abstract: A support assembly for receiving and maintaining one or more sections of an above-ground structure at a substantially upright position includes a base member having a protrusion connected thereto and extending upwardly therefrom in a substantially vertical direction. The support assembly further includes a plurality of ancillary members having top and bottom end portions defining engaging and receiving portions respectively. One of the ancillary members is positionable onto the base member and receives another ancillary member thereon. The assembly also includes a top member with a top end portion that has a slot formed therein and for receiving a section of an above-ground structure so that same can be maintained at a secure position.
    Type: Grant
    Filed: March 1, 2004
    Date of Patent: December 4, 2007
    Inventor: James MacMillan
  • Publication number: 20050246977
    Abstract: A support assembly for receiving and maintaining one or more sections of an above-ground structure at a substantially upright position includes a base member having a protrusion connected thereto and extending upwardly therefrom in a substantially vertical direction. The support assembly further includes a plurality of ancillary members having top and bottom end portions defining engaging and receiving portions respectively. One of the ancillary members is positionable onto the base member and receives another ancillary member thereon. The assembly also includes a top member with a top end portion that has a slot formed therein and for receiving a section of an above-ground structure so that same can be maintained at a secure position.
    Type: Application
    Filed: March 1, 2004
    Publication date: November 10, 2005
    Inventor: James MacMillan
  • Publication number: 20050201540
    Abstract: Disclosed is a system for automatically accessing an account and routing speech to text converted communication to a predetermined text capable device based on user identification. A user placing a call into a communications server is automatically identified based on Caller ID. The user has an account with information unique to that user that includes text capable destinations. The user transmits a voice message to the communications server which is converted to text and automatically routed to a predetermined text capable destination, such as fax machines or email addresses, for example, based on user identification.
    Type: Application
    Filed: March 9, 2004
    Publication date: September 15, 2005
    Inventors: Fred Rampey, James MacMillan