Patents by Inventor Andrew L. Van Brocklin

Andrew L. Van Brocklin 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).

  • Circuit limiting an absolute voltage difference between electrical paths of photovoltaic dies
    Publication number: 20110308561
    Abstract: A first electrical path has a terminal, and a second electrical path has a terminal. First photovoltaic (PV) dies are electrically connected within the first electrical path. Each first PV die is adapted to convert light having a first wavelength range to electrical energy. Second PV dies are electrically connected within the second electrical path. Each second PV die is adapted to convert light having a second wavelength range different than the first wavelength range to electrical energy. A circuit is electrically connected between the terminals of the first and the second electrical paths to limit an absolute voltage difference between the terminals to no greater than a threshold voltage.
    Type: Application
    Filed: June 20, 2010
    Publication date: December 22, 2011
    Inventors: Andrew L. Van Brocklin, Stephan R. Clark
  • THERMAL FLUID-EJECTION DEVICE DIE
    Publication number: 20110175959
    Abstract: A die for a thermal drop-on-demand fluid-ejection device includes thermal firing resistors, low-side switches, and high-side switches. The thermal firing resistors are organized over resistor groups such that each thermal firing resistor is located within only one of the resistor groups. The resistor groups are lesser in number than the thermal firing resistors. Each thermal firing resistor has a first end and a second end. The low-side switches are equal in number to the thermal firing resistors. Each low-side switch connects the second end of a corresponding thermal firing resistor to a low voltage. The high-side switches are equal in number to the resistor groups. Each high-side switch connects the first ends of the thermal firing resistors of a corresponding resistor group to power providing a voltage greater than the low voltage.
    Type: Application
    Filed: October 31, 2008
    Publication date: July 21, 2011
    Inventors: Andrew L. Van Brocklin, Chris Bakker, Mark Hunter, Eric Martin
  • System and method for marking an optical disk
    Patent number: 7935404
    Abstract: A method for selectively marking a surface of an optical disk includes providing an optical disk, wherein the optical disk includes a metal, an electrolyte disposed on the metal, and a photoconductor disposed on the electrolyte, applying a voltage to the optical disk, the voltage being associated with a desired anodization color, and selectively applying a laser to the photoconductor to initiate anodization of the metal.
    Type: Grant
    Filed: January 31, 2005
    Date of Patent: May 3, 2011
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Marshall Field, Andrew L. Van Brocklin, Paul McClelland
  • Optical disc drive having two optomechanical mechanisms
    Patent number: 7933191
    Abstract: An optical disc device includes a first optomechanical mechanism, a second optomechanical mechanism, and a positioning mechanism. The first optomechanical mechanism is located under an optical disc insertable into the optical disc drive to optically access a bottom surface of the optical disc. The second optomechanical mechanism is located over the optical disc insertable into the optical disc drive to optically access a top surface of the optical disc. The positioning mechanism is to precisely locate the second optomechanical mechanism over the optical disc for optically accessing the top surface of the optical disc and to prevent the second optomechanical mechanism from interfering with movement of the optical disc during insertion and removal of the optical disc into and from the optical disc drive.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: April 26, 2011
    Inventors: Andrew L. Van Brocklin, David Leigh, Greg J. Lipinski
  • Labeling methods and apparatus using energy of two wavelengths
    Patent number: 7916164
    Abstract: A method of measuring a relative darkness of an image recorded on a recording medium, comprising: applying first electromagnetic energy having a first wavelength to the recording medium to record an image thereon, applying second electromagnetic energy having a second wavelength different from the first wavelength to the recorded image on the recording medium, and measuring a reflection of the second electromagnetic energy from the recorded image to determine the relative darkness of the recorded image.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: March 29, 2011
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: D. Mitchel Hanks, Paul Boerger, Andrew L. Van Brocklin, Greg J. Lipinski
  • Optical disc device having two optomechanical mechanisms
    Patent number: 7890968
    Abstract: An optical disc device has a first optomechanical mechanism, a second optomechanical mechanism, and a sled mechanism. The first optomechanical mechanism is located under an optical disc insertable into the optical disc device to optically access a bottom surface of the optical disc. The second optomechanical mechanism is located over the optical disc insertable into the optical disc device to optically access a top surface of the optical disc. The first and the second optomechanical mechanism are disposed on the sled mechanism. Movement of the sled mechanism results in both the first and the second optomechanical mechanism moving radially in relation to the optical disc.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: February 15, 2011
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: David Leigh, Andrew L. Van Brocklin
  • Device and method for maintaining optical energy density on a medium
    Patent number: 7889220
    Abstract: A system and method are provided for maintaining optical energy density on a defined area of a medium markable by optical energy. The method includes the operation of directing a light beam from a light source to an optical system. The light beam can pass through at least one optical component in the optical system, where the optical system has astigmatic properties selected to maintain desired irradiance within the defined area of the medium through a range of working distances between the optical system and the defined area. A further operation is guiding the light beam by the optical system onto the marking area of the medium.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: February 15, 2011
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Andrew L. Van Brocklin, Kuohua (Angus) Wu
  • OPTICAL DEVICE
    Publication number: 20100296099
    Abstract: An optical device includes a photodetector, a Fabry-Perot interferometer and an analyzer.
    Type: Application
    Filed: February 6, 2008
    Publication date: November 25, 2010
    Inventors: Andrew L. Van Brocklin, Stephan R. Clark, Matthew Brown
  • Memory array
    Patent number: 7816722
    Abstract: A memory array has a multiplicity of row conductors and a multiplicity of column conductors, the row conductors and column conductors being arranged to cross at cross-points, and has a memory cell disposed at each cross-point, each memory cell having a storage element and a control element coupled in series between a row conductor and a column conductor, and each control element including a silicon-rich insulator. Methods for fabricating the memory array are disclosed.
    Type: Grant
    Filed: February 4, 2004
    Date of Patent: October 19, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Peter J. Fricke, Andrew L. Van Brocklin, Warren B. Jackson
  • Actuator calibration using a focus error signal
    Patent number: 7768878
    Abstract: A lens actuator is calibrated by inputting a signal to the actuator to cause the actuator to move a lens from a first location to a second location, sensing a focus error signal generated in response to the movement of the lens, determining a distance moved by the lens in going from the first location to the second location from a predetermined characteristic of the focus error signal, and determining a gain of the actuator from the input signal and the distance moved.
    Type: Grant
    Filed: July 12, 2005
    Date of Patent: August 3, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Darwin M. Hanks, Andrew L. Van Brocklin
  • Display device
    Patent number: 7733298
    Abstract: In various embodiments, a display device can include a number of pixel cells and a number of receptor cells. Each receptor cell can be coupled to a group of pixel cells within the number of pixel cells, and each receptor cell can receive encoded pixel data and decode the encoded pixel data.
    Type: Grant
    Filed: October 19, 2004
    Date of Patent: June 8, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Daryl E. Anderson, Mark A. Rice, Andrew L. Van Brocklin
  • Methods and apparatus for marking media with collimated electromagnetic radiation beam
    Patent number: 7729216
    Abstract: A method is provided for recording visible marks on a recording medium using an input beam generated by an electromagnetic radiation source. The method comprises (a) substantially collimating the input beam to provide a substantially collimated beam, and (b) applying the substantially collimated beam to the recording medium to provide the visible mark on the recording medium.
    Type: Grant
    Filed: July 5, 2005
    Date of Patent: June 1, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Andrew L. Van Brocklin, Laurence M. Hubby, Jr., Daryl E. Anderson
  • Display system
    Patent number: 7728912
    Abstract: A display system has a device for projecting a light beam and a display. The light beam includes encoded data. The display includes light sources selectively activated according to the encoded data received from the device.
    Type: Grant
    Filed: October 6, 2004
    Date of Patent: June 1, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Daryl E. Anderson, Andrew L. Van Brocklin
  • Optical printhead
    Patent number: 7728859
    Abstract: An optical printhead for a medium including material that forms an optically visible spot in response to energy of a predetermined wavelength, the optical printhead includes a laser configured to impart energy of the predetermined wavelength to the material through a fixed-focus lens arrangement.
    Type: Grant
    Filed: September 26, 2005
    Date of Patent: June 1, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Andrew L. Van Brocklin, Darwin M. Hanks
  • Encoder spokes detection prior to forming image on optically writable label surface of optical disc
    Patent number: 7724627
    Abstract: Whether an optically writable label surface of an optical disc is suitable for having an image formed thereon is determined. A detectable number of encoder spokes on a control feature area of the optical disc is counted as the optical disc is rotated. Where the detectable number of encoder spokes is other than a predetermined value, an error condition with respect to the optically writable label surface of the optical disc is indicated.
    Type: Grant
    Filed: April 22, 2007
    Date of Patent: May 25, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Matthew J. Janssen, Andrew L. Van Brocklin
  • Optical media
    Patent number: 7678438
    Abstract: One embodiment of an optical medium includes a substrate, a data recording layer positioned on the substrate, a selectively transmissive layer positioned on the data recording layer, and a label recording layer positioned on the selectively transmissive layer, the label recording layer optically accessible at only certain wavelengths through the data recording layer and through the selectively transmissive layer.
    Type: Grant
    Filed: October 12, 2005
    Date of Patent: March 16, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Kuohua Wu, Andrew L. Van Brocklin
  • Facilitating focusing of a multi-function digital media drive
    Patent number: 7679633
    Abstract: A method of facilitating focusing of a multi-function digital media drive, is such as to generate two or more error signals each indicative of a focus of an energy beam by an optical arrangement onto first and second different recording layers of a digital medium in the drive, the first recording layers being covered with a protective, energy beam transparent substrate. A selected on of the error signal is used to determine a focus correction.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: March 16, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Andrew L. Van Brocklin
  • Method and system for using an optical sensor array to control a labeling device
    Patent number: 7676119
    Abstract: A method for using an optical sensor array to control a labeling device includes scanning a surface texture of an imageable media with the optical sensor array, collecting surface data corresponding to the surface texture of the imageable media, and controlling the labeling device in response to the surface data.
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: March 9, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Andrew Koll, Daryl E. Anderson, Andrew L. Van Brocklin
  • Substrate marking using encapsulated materials
    Patent number: 7670659
    Abstract: Substrates, coatings and methods for marking substrates using the coatings. The substrate contains a coating of encapsulated marking materials. Capsules of the encapsulated marking materials are designed to preferentially absorb a predetermined wavelength of light or range of wavelengths of light. The capsules contain color chemistry capable of activation by the predetermined wavelength of light or range of wavelengths of light for the generation of a color response. By utilizing capsules of differing color chemistries, such substrates are capable of multi-color image generation.
    Type: Grant
    Filed: April 11, 2005
    Date of Patent: March 2, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: David M Kwasny, Makarand P. Gore, Andrew L. Van Brocklin, William Dorogy
  • Optical print head using a glass arm waveguide
    Patent number: 7672213
    Abstract: This invention relates to an optical mechanism comprising: an optical beam generating mechanism to generate an optical beam; and a unitary, transparent waveguide for guiding the optical beam to an optically writable surface wherein optical elements for guiding the optical beam are coated onto the waveguide to create a relatively compact optical system, a relatively low exit numerical aperture for the exit pupil, and for bending and re-directing the optical beam.
    Type: Grant
    Filed: March 2, 2006
    Date of Patent: March 2, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Andrew L. Van Brocklin, Kuohua Wu