Patents by Inventor George Keith

George Keith 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).

  • Publication number: 20080219182
    Abstract: A system and method for adjusting digital subscriber line based services is provided. In a particular embodiment, a computer readable medium is provided including computer-executable instructions that when executed, cause a computer to modify a value of a first control parameter associated with a Digital Subscriber Line (DSL) network based on a first performance parameter that is measured in real-time at a DSL modem over a first pre-determined time period.
    Type: Application
    Filed: May 23, 2008
    Publication date: September 11, 2008
    Applicant: SBC Knowledge Ventures, LP
    Inventors: Raghvendra G. Savoor, George Keith Cambron, John Porter Van Slyke
  • Patent number: 7400720
    Abstract: A method is provided that can be used for modifying a control parameter associated with a digital subscriber line (DSL) service. Initially, a real-time performance parameter is received from a first termination unit that is coupled to an DSL circuit. The real-time performance parameter is measured at the termination unit after the termination unit is provisioned and after the DSL circuit is placed in-service. A value of a control parameter associated with the DSL circuit can be modified based on the measured real-time performance parameter. Further, activity over the DSL circuit can be monitored in real-time and when usage of the DSL circuit is below a threshold, the provisionable service parameter that corresponds to the control parameter is modified. Moreover, a first re-provisioning cycle between the first termination unit and a second termination unit coupled to the DSL circuit can be initiated using the provisionable service parameter.
    Type: Grant
    Filed: October 5, 2004
    Date of Patent: July 15, 2008
    Assignee: SBC Knowledge Ventures, L.P.
    Inventors: Raghvendra G. Savoor, George Keith Cambron, John Porter Van Slyke
  • Patent number: 7388906
    Abstract: In a particular embodiment a method of collecting and processing modem data is provided. The method includes, during training of a broadband modem, sending a series of tones within a frequency transmission band of the broadband modem, receiving the transmitted series of tones at a receiving broadband modem, receiving a measurement value, determining a transmission loss for each of the series of tones by comparing the predetermined transmission power level, and the received measured power level, performing a statistical match comparison between each of the received tone signals and a plurality of different computer models of a single transmission facility having various bridge taps connected to the single transmission facility, and determining a best fit between each of the received tone signals and one of the plurality of the bridge tap computer models. The series of tones have a predetermined transmission power level.
    Type: Grant
    Filed: May 3, 2004
    Date of Patent: June 17, 2008
    Assignee: SBC Knowledge Ventures, L.P.
    Inventors: Richard Dennis Hart, Raghvendra G. Savoor, Laurie G. King, George Keith Cambron, Kapil Shrikhande
  • Patent number: 7258411
    Abstract: A method informs a user of an ink jet printer of the end of life of a consumable. The consumable supplies ink to a printhead having a plurality of ink ejection nozzles and an associated plurality of ink jetting actuators, each of the plurality of ink jetting actuators being addressable. The printhead includes a plurality of address lines for facilitating selection of one or more of the plurality of ink jetting actuators. The method includes the steps of defining a notice threshold that is associated with a corresponding amount of ink remaining in the consumable; providing control logic for selectively controlling the plurality of address lines; determining whether the amount of ink remaining in the consumable has reached the notice threshold; and upon reaching the notice threshold, reducing an image density of images formed by the printhead by selectively disabling at least one of the plurality of address lines.
    Type: Grant
    Filed: May 5, 2005
    Date of Patent: August 21, 2007
    Assignee: Lexmark International, Inc.
    Inventors: Frank Edward Anderson, George Keith Parish, Timothy Strunk, John Dennis Zbrozek
  • Patent number: 7244015
    Abstract: An inkjet printhead heater chip has an ink via asymmetrically arranged in a reciprocating direction of inkjet printhead movement. The ink via has two sides and a longitudinal extent substantially parallel to a print medium advance direction. A column of fluid firing elements exists exclusively along a single side of the two sides. The heater chip and ink via each have a centroid and neither resides coincidentally with one another. Preferably, the heater chip centroid resides externally to a boundary of the ink via. In other aspects, the column of fluid firing elements can be a sole column or plural and may be centered in the reciprocating direction. The ink via can be a sole via or plural. The heater chip can be rectangular and the ink vias can be closer to either the long or short ends thereof. Inkjet printers for housing the printheads are also disclosed.
    Type: Grant
    Filed: November 8, 2005
    Date of Patent: July 17, 2007
    Assignee: Lexmark International, Inc.
    Inventors: George Keith Parish, Kristi Maggard Rowe
  • Patent number: 7083266
    Abstract: A micro-miniature fluid ejecting device. The fluid ejecting device includes a semiconductor substrate having fluid ejectors formed on a surface of the substrate. A flexible circuit is fixedly attached to the semiconductor substrate. The flexible circuit has power contacts for providing power to the fluid ejectors. At least one drive circuit is connected to the fluid ejectors. The drive circuit is disposed on one of the semiconductor substrate and the flexible circuit. A fluid sequencer is connected to the drive circuit for selectively activating the fluid ejectors. The fluid sequencer is also disposed on one of the semiconductor substrate and the flexible circuit. The semiconductor substrate is attached to a housing. A fluid source is provided for supplying fluid to the semiconductor substrate for ejection by the fluid ejectors. The fluid ejecting device provides low cost construction for application specific miniature fluid jetting devices.
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: August 1, 2006
    Assignee: Lexmark International, Inc.
    Inventors: Adam Jude Ahne, John Douglas Anderson, Stephen Andrew Budelsky, Mark Joseph Edwards, Randall David Mayo, George Keith Parish, Kristi Maggard Rowe, David Craig Stevenson
  • Patent number: 7077509
    Abstract: An inkjet printhead heater chip has an ink via asymmetrically arranged in a reciprocating direction of inkjet printhead movement. The ink via has two sides and a longitudinal extent substantially parallel to a print medium advance direction. A column of fluid firing elements exists exclusively along a single side of the two sides. The heater chip and ink via each have a centroid and neither resides coincidentally with one another. Preferably, the heater chip centroid resides externally to a boundary of the ink via. In other aspects, the column of fluid firing elements can be a sole column or plural and may be centered in the reciprocating direction. The ink via can be a sole via or plural. The heater chip can be rectangular and the ink vias can be closer to either the long or short ends thereof. Inkjet printers for housing the printheads are also disclosed.
    Type: Grant
    Filed: September 22, 2004
    Date of Patent: July 18, 2006
    Assignee: Lexmark International, Inc.
    Inventors: George Keith Parish, Kristi Maggard Rowe
  • Patent number: 7014299
    Abstract: An inkjet printhead heater chip has an ink via asymmetrically arranged in a reciprocating direction of inkjet printhead movement. The ink via has two sides and a longitudinal extent substantially parallel to a print medium advance direction. A column of fluid firing elements exists exclusively along a single side of the two sides. The heater chip and ink via each have a centroid and neither resides coincidentally with one another. Preferably, the heater chip centroid resides externally to a boundary of the ink via. In other aspects, the column of fluid firing elements can be a sole column or plural and may be centered in the reciprocating direction. The ink via can be a sole via or plural. The heater chip can be rectangular and the ink vias can be closer to either the long or short ends thereof. Inkjet printers for housing the printheads are also disclosed.
    Type: Grant
    Filed: September 22, 2004
    Date of Patent: March 21, 2006
    Assignee: Lexmark International, Inc.
    Inventors: George Keith Parish, Kristi Maggard Rowe
  • Patent number: 7004465
    Abstract: A game table for playing a game relating to an ice-related sport. The game table includes a tabletop substantially covered with a sheet of ice. Symbols printed on the tabletop are visible through the ice and relate to the sport of ice hockey, curling, skating, etc.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: February 28, 2006
    Inventor: George A. Keith
  • Patent number: 6976752
    Abstract: An ink jet printer includes a printhead control circuit that produces printhead command signals based on data signals provided by the printer. A power circuit actuates ink ejectors in response to the printhead command signals and includes a plurality of compensation circuits. Each ink ejector is associated with a single compensation circuit and each compensation circuit includes a number of switches connected in parallel with each other. Each switch in a single compensation circuit is connected to actuate a single ink ejector when the switch is turned on. The compensation circuits adjust their internal resistance by turning on more or less switches and thereby compensate for changing effective parasitic resistance of the power lines.
    Type: Grant
    Filed: October 28, 2003
    Date of Patent: December 20, 2005
    Assignee: Lexmark International, Inc.
    Inventors: George Keith Parish, Kristi Maggard Rowe, John Glenn Edelen
  • Patent number: 6962399
    Abstract: A method informs a user of an ink jet printer of the end of life of a consumable. The consumable supplies ink to a printhead having a plurality of ink ejection nozzles and an associated plurality of ink jetting actuators, each of the plurality of ink jetting actuators being addressable. The printhead includes a plurality of address lines for facilitating selection of one or more of the plurality of ink jetting actuators. The method includes the steps of defining a notice threshold that is associated with a corresponding amount of ink remaining in the consumable; providing control logic for selectively controlling the plurality of address lines; determining whether the amount of ink remaining in the consumable has reached the notice threshold; and upon reaching the notice threshold, reducing an image density of images formed by the printhead by selectively disabling at least one of the plurality of address lines.
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: November 8, 2005
    Assignee: Lexmark International, Inc.
    Inventors: Frank Edward Anderson, George Keith Parish, Timothy Strunk, John Dennis Zbrozek
  • Patent number: 6951384
    Abstract: An ink jet heater chip having improved thermal. The chip includes a semiconductor substrate, a first metal resistive, a second metal conductive layer on a first portion of the resistive layer and on a second portion of the resistive layer defining a heater resistor element. A passivation layer having a thickness defined by a deposition process is deposited on the second metal conductive layer and heater resistor element. A cavitation layer is deposited on the passivation layer and etched. A dielectric layer is deposited and etched to provide a dielectric layer overlying the first portion of the resistive layer. An electrical conduit via is etched in the dielectric layer. A third metal conductive layer is deposited in the via for electrical contact with the second metal conductive layer. Separately deposited dielectric and passivation layers enable independent control of the thickness of the dielectric and passivation layers.
    Type: Grant
    Filed: June 21, 2004
    Date of Patent: October 4, 2005
    Assignee: Lexmark International, Inc.
    Inventors: Frank Edward Anderson, George Keith Parish
  • Patent number: 6913345
    Abstract: A method of firing a plurality of jetting heaters in an ink jet printer includes identifying a first of the jetting heaters to be fired. A second of the jetting heaters to be fired immediately after the firing of the first jetting heater is also identified. Power is simultaneously applied to each of the first jetting heater and the second jetting heater.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: July 5, 2005
    Assignee: Lexmark International, Inc.
    Inventors: George Keith Parish, Kristi Maggard Rowe
  • Publication number: 20050133993
    Abstract: A game table for playing a game relating to an ice-related sport. The game table includes a tabletop substantially covered with a sheet of ice. Symbols printed on the tabletop are visible through the ice and relate to the sport of ice hockey, curling, skating, etc.
    Type: Application
    Filed: December 19, 2003
    Publication date: June 23, 2005
    Inventor: George Keith
  • Patent number: 6890066
    Abstract: An inkjet printer includes a printhead for ejecting ink onto a print medium. The printhead includes electrical and mechanical structure for controlling the ejection of the ink. The printhead includes an ink ejector chip having at least one active device, such as a transistor and the like. A guard ring substantially surrounds select active devices included on the chip. The guard ring tends to prevent latch-up when the chip operates to energize the ink. The chip is manufactured using a substrate devoid of an overlying epitaxial layer which tends to reduce the cost of manufacturing the chip.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: May 10, 2005
    Assignee: Lexmark International, Inc.
    Inventors: George Keith Parish, Kristi Maggard Rowe, John Glenn Edelen
  • Patent number: 6863381
    Abstract: An inkjet printhead heater chip has an ink via asymmetrically arranged in a reciprocating direction of inkjet printhead movement. The ink via has two sides and a longitudinal extent substantially parallel to a print medium advance direction. A column of fluid firing elements exists exclusively along a single side of the two sides. The heater chip and ink via each have a centroid and neither resides coincidentally with one another. Preferably, the heater chip centroid resides externally to a boundary of the ink via. In other aspects, the column of fluid firing elements can be a sole column or plural and may be centered in the reciprocating direction. The ink via can be a sole via or plural. The heater chip can be rectangular and the ink vias can be closer to either the long or short ends thereof. Inkjet printers for housing the printheads are also disclosed.
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: March 8, 2005
    Assignee: Lexmark International, Inc.
    Inventors: George Keith Parish, Kristi Maggard Rowe
  • Patent number: 6830307
    Abstract: An integrated circuit in an ink jet printhead selectively activates one or more printing elements on the printhead based on a multi-dimensional addressing scheme. The integrated circuit includes a plurality of pass switching, power switching, and one or more ground switching devices for selectively connecting one or more power switching devices to ground to activate one or more of the printing elements to print an image on a print medium. The integrated circuit includes a number of first, second, third, and fourth control lines for selectively controlling the activation of one or more of the printing elements.
    Type: Grant
    Filed: January 27, 2004
    Date of Patent: December 14, 2004
    Assignee: Lexmark International, Inc.
    Inventors: Frank Edward Anderson, George Keith Parish
  • Publication number: 20040233255
    Abstract: An inkjet printer includes a printhead for ejecting ink onto a print medium. The printhead includes electrical and mechanical structure for controlling the ejection of the ink. The printhead includes an ink ejector chip having at least one active device, such as a transistor and the like. A guard ring substantially surrounds select active devices included on the chip. The guard ring tends to prevent latch-up when the chip operates to energize the ink. The chip is manufactured using a substrate devoid of an overlying epitaxial layer which tends to reduce the cost of manufacturing the chip.
    Type: Application
    Filed: May 22, 2003
    Publication date: November 25, 2004
    Inventors: George Keith Parish, Kristi Maggard Rowe, John Glenn Edelen
  • Publication number: 20040227791
    Abstract: An ink jet heater chip having improved thermal. The chip includes a semiconductor substrate, a first metal resistive, a second metal conductive layer on a first portion of the resistive layer and on a second portion of the resistive layer defining a heater resistor element. A passivation layer having a thickness defined by a deposition process is deposited on the second metal conductive layer and heater resistor element. A cavitation layer is deposited on the passivation layer and etched. A dielectric layer is deposited and etched to provide a dielectric layer overlying the first portion of the resistive layer. An electrical conduit via is etched in the dielectric layer. A third metal conductive layer is deposited in the via for electrical contact with the second metal conductive layer. Separately deposited dielectric and passivation layers enable independent control of the thickness of the dielectric and passivation layers.
    Type: Application
    Filed: June 21, 2004
    Publication date: November 18, 2004
    Inventors: Frank Edward Anderson, George Keith Parish
  • Patent number: 6805431
    Abstract: An inkjet printhead heater chip has a silicon substrate with a heater stack formed of a plurality of thin film layers thereon for ejecting an ink drop during use. The thin film layers include: a thermal barrier layer on the silicon substrate; a resistor layer on the thermal barrier layer; a doped diamond-like carbon layer on the resistor layer; and a cavitation layer on the doped diamond-like carbon layer. The doped diamond-like carbon layer preferably includes silicon but may also include nitrogen, titanium, tantalum, combinations thereof or other. When it includes silicon, a preferred silicon concentration ranges from 20 to 25 atomic percent. A preferred cavitation layer includes an undoped diamond-like carbon, tantalum or titanium layer. The doped diamond-like carbon layer ranges in thickness from 500 to 3000 angstroms. The cavitation layer ranges from 500 to 6000 angstroms. Inkjet printheads and printers are also disclosed.
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: October 19, 2004
    Assignee: Lexmark International, Inc.
    Inventors: Frank Edward Anderson, Byron V Bell, Yimin Guan, George Keith Parish, Robert Cornell