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).
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Patent number: 9138990Abstract: 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: GrantFiled: December 8, 2008Date of Patent: September 22, 2015Assignee: Hewlett-Packard Development Company, L.P.Inventors: Trudy Benjamin, Joseph M. Torgerson
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Patent number: 9085139Abstract: An assembly includes an election chamber, an ejection member, and a capacitance detection unit. The ejection chamber holds a fluid. The ejection member is disposed in the ejection chamber to selectively receive a predetermined amount of power from a power supply line. The capacitance detection unit detects art amount of capacitance.Type: GrantFiled: June 20, 2011Date of Patent: July 21, 2015Assignee: Hewlett-Packard Development Company, L.P.Inventor: Trudy Benjamin
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Publication number: 20150198715Abstract: 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: ApplicationFiled: September 25, 2012Publication date: July 16, 2015Inventors: Ernesto Garay, David Miller Lowe, Trudy Benjamin, Mark H. MacKenzie, Gregory N. Burton
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Patent number: 8991978Abstract: A printing system comprising an electrical interface for ink pens of an inkjet printer, the electrical interface including a first group of electrical contacts; a second group of electrical contacts, the second group of electrical contacts being arranged in an identical configuration as the first group of electrical contacts; and a number of electrical interconnects, in which each electrical contact from the first and second groups of electrical contacts is connected to one of the electrical interconnects via a conductive trace; in which at least one electrical contact from the first group of electrical contacts is connected to a same electrical interconnect as at least one electrical contact from the second group of electrical contacts.Type: GrantFiled: May 11, 2010Date of Patent: March 31, 2015Assignee: Hewlett-Packard Development Company, L.P.Inventors: Huston W. Rice, Kenneth Hickey, Jason M. Quintana, Trudy Benjamin, Joseph M. Torgerson
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Publication number: 20150077451Abstract: 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: ApplicationFiled: November 25, 2014Publication date: March 19, 2015Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Trudy Benjamin, Joseph Torgerson
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Patent number: 8960860Abstract: A printhead die is provided that includes a substrate and a slot extending through the substrate, the slot including a first slot segment and a discrete second slot segment, the second slot segment being offset from the first slot segment along a major axis and along an orthogonal minor axis.Type: GrantFiled: May 31, 2011Date of Patent: February 24, 2015Assignee: Hewlett-Packard Development Company, L.P.Inventors: James P. Axtell, Joseph M. Torgerson, Trudy Benjamin
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Publication number: 20140374812Abstract: 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: ApplicationFiled: April 30, 2012Publication date: December 25, 2014Applicant: Hewlett-Packard Development Company, L.P.Inventors: Ning Ge, Adam L. Ghozeil, Chaw Sing Ho, Trudy Benjamin
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Publication number: 20140362146Abstract: 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: ApplicationFiled: April 27, 2012Publication date: December 11, 2014Applicant: Hewlett-Packard Development Company, LP.Inventors: Ning Ge, Bee Ling Peh, Trudy Benjamin, Ken Kiat Ng, Jianhui Gu
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Patent number: 8864260Abstract: An integrated circuit (IC) erasable programmable read-only memory (EPROM) structure for a thermal inkjet printhead includes: a fire line to provide fire line data; a select line to provide selecting data; a firing cell coupled to the fire line; an EPROM cell coupled to the fire line; a selector cell coupled to the select line, the firing cell and the EPROM cell; and a data switching circuit to provide address data to the firing cell or the EPROM cell. The data switching circuit and the selector cell selectively enable transfer of the fire line data from the fire line to the firing cell or the EPROM cell as a function of state of the selecting data on the select line and the address data from the data switching circuit.Type: GrantFiled: April 25, 2013Date of Patent: October 21, 2014Assignee: Hewlett-Packard Development Company, L.P.Inventors: Ning Ge, Trudy Benjamin, Teck Khim Neo
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Publication number: 20140204148Abstract: 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: ApplicationFiled: June 27, 2011Publication date: July 24, 2014Inventors: Ning Ge, Trudy Benjamin, Teck-Khim Neo, Joseph M. Torgerson, Neel Banerjee, George H. Corrigan, III
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Patent number: 8770685Abstract: A fluid-ejection device includes physical data lines, a controller, and a fluid-ejection mechanism. The physical data lines communicatively connect the controller and the fluid-ejection mechanism. The controller is to assert a logical and virtual nozzle-fire-restart line to denote that a first data sub-packet of a new data packet of nozzle data for a predetermined sequence of fluid-ejection nozzles of the fluid-ejection mechanism is being transmitted over the physical data lines. The fluid-ejection mechanism is to listen for the controller to assert the logical and virtual nozzle-fire-restart line, to discern that the first data sub-packet of the new data packet is being transmitted over the physical data lines.Type: GrantFiled: February 22, 2009Date of Patent: July 8, 2014Assignee: Hewlett-Packard Development Company, L.P.Inventors: Matthew A. Shepherd, Walter D. Clark, Trudy Benjamin
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Publication number: 20140078213Abstract: 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: ApplicationFiled: May 27, 2011Publication date: March 20, 2014Inventors: Alexander Govyadinov, Brett E. Dahlgren, Anton Nicholas Clarkson, Steven H. Walker, Daniel Burger, Trudy Benjamin
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Publication number: 20140043396Abstract: A printhead die is provided that includes a substrate and a slot extending through the substrate, the slot including a first slot segment and a discrete second slot segment, the second slot segment being offset from the first slot segment along a major axis and along an orthogonal minor axis.Type: ApplicationFiled: May 31, 2011Publication date: February 13, 2014Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: James P. Axtell, Joseph M. Torgerson, Trudy Benjamin
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Publication number: 20140042505Abstract: 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: ApplicationFiled: May 19, 2011Publication date: February 13, 2014Inventor: Trudy BenjamÃn
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Publication number: 20140002538Abstract: An assembly includes an election chamber, an ejection member, and a capacitance detection unit. The ejection chamber holds a fluid. The ejection member is disposed in the ejection chamber to selectively receive a predetermined amount of power from a power supply line. The capacitance detection unit detects art amount of capacitance.Type: ApplicationFiled: June 20, 2011Publication date: January 2, 2014Inventor: Trudy Benjamin
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Patent number: 8474943Abstract: An integrated fluid cartridge (100) for securing onboard memory (150, 215) includes an electrically actuated dispensing mechanism (120, 205) with a number of droplet generators which are fluidically connected to a fluid reservoir (110); a memory module (150, 215); and an electrical interface (200) containing shared select lines (250) and data lines (255) configured to control both the dispensing mechanism (120, 205) and the memory module (150, 215). A method for secure communications between a precision-dispensing device and integrated fluid cartridge (100) includes connecting the precision-dispensing device and the cartridge (100) via an electrical interface (200) containing select lines (250) and data lines (255); the cartridge (100) having several electronic components which are controlled via the select (250) and data lines (255).Type: GrantFiled: March 14, 2008Date of Patent: July 2, 2013Assignee: Hewlett-Packard Development Company, L.P.Inventors: Erik D. Ness, Kevin Bruce, Trudy Benjamin, Joseph M. Torgerson
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Patent number: 8460947Abstract: A fluid ejection device includes one or more digital data storage arrays having plural EPROM cells. A method for affirming performance adequacy of EPROM cells in the one or more arrays includes the steps of identifying a reference cell in each array, measuring a selected performance criterion for the reference cells, obtaining a reference criterion value, and evaluating the actual performance of at least one cell in each array with respect to the reference criterion value.Type: GrantFiled: September 13, 2010Date of Patent: June 11, 2013Assignee: Hewlett-Packard Development Company, L.P.Inventors: Stan E Leigh, Kevin Bruce, Joseph M Torgerson, Trudy Benjamin
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Patent number: 8449079Abstract: A fluid ejection device includes a first resistor layer that has at least a first resistor for heating fluid and a second resistor layer that has at least a second resistor for heating fluid. There is an electrically insulating layer formed between the first and second resistor layers. A print cartridge for a printer contains a fluid container and a printhead, at least one nozzle, a first resistor layer that has at least a first resistor for pre-heating or thermally ejecting fluid, a second resistor layer that has at least a second resistor for pre-heating or thermally ejecting fluid, and an electrically insulating layer formed between the first and second resistor layers.Type: GrantFiled: September 13, 2011Date of Patent: May 28, 2013Assignee: Hewlett-Packard Development Company, L.P.Inventors: Ning Ge, Trudy Benjamin, Adam L Ghozeil
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Publication number: 20130063527Abstract: A fluid ejection device comprises a first resistor layer that comprises at least a first resistor for heating fluid and a second resistor layer that comprises at least a second resistor for heating fluid. There is an electrically insulating layer between the first and second resistor layers. A print cartridge for a printer comprises a fluid container and a printhead, at least one nozzle, a first resistor layer that comprises at least a first resistor for pre-heating or thermally ejecting fluid, a second resistor layer that comprises at least a second resistor for pre-heating or thermally ejecting fluid, and an electrically insulating layer between the first and second resistor layers.Type: ApplicationFiled: September 13, 2011Publication date: March 14, 2013Inventors: Ning Ge, Trudy Benjamin, Adam L. Ghozeil
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Publication number: 20130050344Abstract: A printing system comprising an electrical interface for ink pens of an inkjet printer, the electrical interface including a first group of electrical contacts; a second group of electrical contacts, the second group of electrical contacts being arranged in an identical configuration as the first group of electrical contacts; and a number of electrical interconnects, in which each electrical contact from the first and second groups of electrical contacts is connected to one of the electrical interconnects via a conductive trace; in which at least one electrical contact from the first group of electrical contacts is connected to a same electrical interconnect as at least one electrical contact from the second group of electrical contacts.Type: ApplicationFiled: May 11, 2010Publication date: February 28, 2013Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Huston W. Rice, Kenneth Hickey, Jason M. Quintana, Trudy Benjamin, Joseph M. Torgerson