Patents by Inventor Trudy Benjamin

Trudy Benjamin 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: 10378946
    Abstract: In some examples, a method of sensing an ink level includes applying a pre-charge voltage to a sense capacitor to charge the sense capacitor with a charge, sharing the charge between the sense capacitor and a reference capacitor, causing a reference voltage at a gate of an evaluation transistor, and determining a resistance from a drain to a source of the evaluation transistor that results from the reference voltage.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: August 13, 2019
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Ning Ge, Trudy Benjamin, Teck-Khim Neo, Joseph M. Torgerson, Neel Banerjee, George H. Corrigan, III
  • Patent number: 10170466
    Abstract: In some examples, a transistor includes a drain, a channel, and a gate. The channel surrounds the drain and has a channel length to width ratio. The gate is over the channel to provide an active channel region that has an active channel region length to width ratio that is greater than the channel length to width ratio.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: January 1, 2019
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventor: Trudy Benjamin
  • Patent number: 10082414
    Abstract: In some examples, an ink level sensor includes a sense capacitor between a first node and ground, a first switch to couple a first voltage to the first node and charge the sense capacitor, a second switch to couple the first node with a second node and share the charge between the sense capacitor and a reference capacitor, causing a second voltage at the second node, and a transistor having a drain, a gate coupled to the second node, and a source coupled to ground, the transistor to provide a drain to source resistance in proportion to the second voltage.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: September 25, 2018
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Ning Ge, Trudy Benjamin, Teck-Khim Neo, Joseph M. Torgerson, Neel Banerjee, George H. Corrigan, III
  • Patent number: 9987841
    Abstract: An inkjet print head includes data signal lines configured to supply inkjet control voltages and non-volatile memory cell random access addresses. The inkjet print head includes an inkjet nozzle array wherein each nozzle in the array is configured to communicate with a data signal line. Also a non-volatile attribute memory cell array is included in the inkjet print head wherein each memory cell in the array is accessed through a data signal line shared with the nozzle array.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: June 5, 2018
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Joseph M. Torgerson, Trudy Benjamin, Kevin Bruce
  • Patent number: 9899539
    Abstract: An EPROM cell includes a semiconductor substrate, having source and drain regions, a floating gate, including a semiconductive polysilicon layer electrically interconnected with a first metal layer, and a control gate, including a second metal layer. The floating gate is disposed adjacent to the source and drain regions and separated from the semiconductor substrate by a first dielectric layer, and the second metal layer of the control gate is capacitively coupled to the first metal layer with a second dielectric layer therebetween.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: February 20, 2018
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Trudy Benjamin
  • Publication number: 20180006020
    Abstract: In some examples, a transistor includes a drain, a channel, and a gate. The channel surrounds the drain and has a channel length to width ratio. The gate is over the channel to provide an active channel region that has an active channel region length to width ratio that is greater than the channel length to width ratio.
    Type: Application
    Filed: September 19, 2017
    Publication date: January 4, 2018
    Inventor: Trudy Benjamin
  • Patent number: 9773782
    Abstract: In some examples, a transistor includes a drain, a channel, and a gate. The channel surrounds the drain and has a channel length to width ratio. The gate is over the channel to provide an active channel region that has an active channel region length to width ratio that is greater than the channel length to width ratio.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: September 26, 2017
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventor: Trudy Benjamin
  • Patent number: 9707752
    Abstract: An inkjet print head includes data signal lines configured to supply inkjet control voltages and non-volatile memory cell random access addresses. The inkjet print head includes an inkjet nozzle array wherein each nozzle in the array is configured to communicate with a data signal line. Also a non-volatile attribute memory cell array is included in the inkjet print head wherein each memory cell in the array is accessed through a data signal line shared with the nozzle array.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: July 18, 2017
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Joseph M. Torgerson, Trudy Benjamin, Kevin Bruce
  • Publication number: 20170144451
    Abstract: In some examples, a method of sensing an ink level includes applying a pre-charge voltage to a sense capacitor to charge the sense capacitor with a charge, sharing the charge between the sense capacitor and a reference capacitor, causing a reference voltage at a gate of an evaluation transistor, and determining a resistance from a drain to a source of the evaluation transistor that results from the reference voltage.
    Type: Application
    Filed: February 2, 2017
    Publication date: May 25, 2017
    Inventors: Ning Ge, Trudy Benjamin, Teck-Khim Neo, Joseph M. Torgerson, Neel Banerjee, George H. Corrigan, III
  • Publication number: 20170146383
    Abstract: In some examples, an ink level sensor includes a sense capacitor between a first node and ground, a first switch to couple a first voltage to the first node and charge the sense capacitor, a second switch to couple the first node with a second node and share the charge between the sense capacitor and a reference capacitor, causing a second voltage at the second node, and a transistor having a drain, a gate coupled to the second node, and a source coupled to ground, the transistor to provide a drain to source resistance in proportion to the second voltage.
    Type: Application
    Filed: February 2, 2017
    Publication date: May 25, 2017
    Inventors: Ning Ge, Trudy Benjamin, Teck-Khim Neo, Joseph M. Torgerson, Neel Banerjee, George H. Corrigan, III
  • Publication number: 20170084609
    Abstract: In some examples, a transistor includes a drain, a channel, and a gate. The channel surrounds the drain and has a channel length to width ratio. The gate is over the channel to provide an active channel region that has an active channel region length to width ratio that is greater than the channel length to width ratio.
    Type: Application
    Filed: December 6, 2016
    Publication date: March 23, 2017
    Inventor: Trudy Benjamin
  • Patent number: 9599500
    Abstract: In an embodiment, a method of sensing an ink level includes applying a pre-charge voltage Vp to a sense capacitor to charge the sense capacitor with a charge Q1, sharing Q1 between the sense capacitor and a reference capacitor, causing a reference voltage Vg at the gate of an evaluation transistor, and determining a resistance from drain to source of the evaluation transistor that results from Vg.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: March 21, 2017
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Ning Ge, Trudy Benjamin, Teck-Khim Neo, Joseph M. Torgerson, Neel Banerjee, George H. Corrigan, III
  • Publication number: 20170072687
    Abstract: An inkjet print head includes data signal lines configured to supply inkjet control voltages and non-volatile memory cell random access addresses. The inkjet print head includes an inkjet nozzle array wherein each nozzle in the array is configured to communicate with a data signal line. Also a non-volatile attribute memory cell array is included in the inkjet print head wherein each memory cell in the array is accessed through a data signal line shared with the nozzle array.
    Type: Application
    Filed: November 22, 2016
    Publication date: March 16, 2017
    Inventors: Joseph M. Torgerson, Trudy Benjamin, Kevin Bruce
  • Patent number: 9543434
    Abstract: A device including a drain, a channel, and a gate. The channel surrounds the drain and has a channel length to width ratio. The gate is situated over the channel to provide an active channel region that has an active channel region length to width ratio that is greater than the channel length to width ratio.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: January 10, 2017
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventor: Trudy Benjamín
  • Patent number: 9289978
    Abstract: A fluid ejection device includes a plurality of address lines and a fire line for communicating a fire signal. The device also includes a plurality of nozzle circuits coupled to the fire line and the plurality of address lines. Each nozzle circuit is configured, when enabled, to eject fluid via a different one of a plurality of nozzles in response to the fire signal. A subset of the plurality of address lines is coupled to each pair of the plurality of nozzle circuits. Each subset that is coupled to one of the pairs of nozzle circuits is selected so that simultaneous activation of every address line of that subset simultaneously enables each nozzle circuit in the pair or pairs of nozzle circuits coupled to that triad and none of the other nozzle circuits of the plurality of nozzle circuits.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: March 22, 2016
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Trudy Benjamin, Joseph Torgerson
  • Patent number: 9268023
    Abstract: A system for drop detection of fluid drops ejected by a printing device includes a drop detector comprising a radiation source and radiation sensor for illuminating a region in which drops are ejected by a print bar and detecting radiation from the radiation source that is reflected by backscattering from the drops to the radiation sensor; and a controller for controlling the drop detector and the print bar, wherein the controller uses a signal output by the drop detector to determine whether nozzles of the print bar are operating properly.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: February 23, 2016
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Ernesto Garay, David Miller Lowe, Trudy Benjamin, Mark H. MacKenzie, Gregory N. Burton
  • Patent number: 9259925
    Abstract: In one example, a drop detector includes a light source for illuminating drops passing through a drop zone, multiple light detectors near the light source for detecting light scattered off drops passing through the drop zone, and multiple lenses each configured to focus light from the drop zone on one of the light detectors. In one example, each light detector is arranged in the same plane with all of the other light detectors. In one example, the lenses are configured to focus light from two different spaces in the drop zone on different detectors or groups of detectors. In one example, the lenses are configured to focus light from a single space in the drop zone on multiple detectors.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: February 16, 2016
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Alexander Govyadinov, Brett E Dahlgren, Anton Nicholas Clarkson, Steven H. Walker, Daniel Burger, Trudy Benjamin
  • Patent number: 9252149
    Abstract: A device including a drain, a channel, a floating gate, and a control gate. The channel surrounds the drain and has a channel area. The floating gate includes an active floating gate region that has an active floating gate region area. The control gate is coupled to the active floating gate region via a control capacitance, wherein the active floating gate region area is smaller than the channel area.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: February 2, 2016
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Ning Ge, Adam L. Ghozeil, Chaw Sing Ho, Trudy Benjamin
  • Publication number: 20150367639
    Abstract: The present disclosure describes a compound slot, and systems and methods of forming the compound slot. An example of a compound slot includes a wafer, where the compound slot includes a trench along a long axis of the compound slot and on a top surface of the wafer, where the trench passes through an initial portion of a total depth of the wafer. A number of openings pass through a remaining portion of the total depth of the wafer, where at least a retained portion of a bottom of the trench is present around a perimeter of each of the number of openings.
    Type: Application
    Filed: August 27, 2015
    Publication date: December 24, 2015
    Inventors: Ning Ge, Bee Ling Peh, Trudy Benjamin, Ken Kiat Ng, Jianhui Gu
  • Patent number: 9144984
    Abstract: The present disclosure describes a compound slot, and systems and methods of forming the compound slot. An example of a compound slot includes a wafer, where the compound slot includes a trench along a long axis of the compound slot and on a top surface of the wafer, where the trench passes through an initial portion of a total depth of the wafer. A number of openings pass through a remaining portion of the total depth of the wafer, where at least a retained portion of a bottom of the trench is present around a perimeter of each of the number of openings.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: September 29, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Ning Ge, Bee Ling Peh, Trudy Benjamin, Ken Kiat Ng, Jianhui Gu