Patents by Inventor Lloyd Williams
Lloyd Williams 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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Publication number: 20110049793Abstract: According to aspects illustrated herein, there is provided a method, a system, and a printmaking device for calibrating sensors. The method begins by transporting a media sheet along a media path, the sheet having a lead edge, a trail edge and a measurement edge. Next, the method halts the forward motion of the sheet after the lead edge of the sheet passes a fixed reference. After that, the method moves the sheet laterally relative to the media path across the at least one edge sensor using a sheet actuator. Then, the method records an actual position of the sheet actuator and an output of at least one edge sensor. Finally, the method calculates a calibration factor based on the actual position of the sheet actuator and the output of the at least one edge sensor.Type: ApplicationFiled: August 26, 2009Publication date: March 3, 2011Applicant: Xerox CorporationInventors: Joannes N.M. deJong, Lloyd A. Williams
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Publication number: 20110018193Abstract: An apparatus for registering a sheet. The apparatus including a sheet registration nip assembly for changing a position and/or timing of the sheet. The apparatus also including a controller communicating a first signal to the sheet registration nip assembly to change a first sheet characteristic to a target characteristic. The first signal generated to impart the target characteristic to the sheet by the time the sheet reaches a preliminary datum. The preliminary datum disposed along the transport path between the sheet registration nip assembly and a delivery datum that is disposed downstream of the sheet registration nip assembly. The controller communicating a second signal to the sheet registration nip assembly to change a second sheet characteristic to the target characteristic. The second signal communicated when at least a portion of the sheet is disposed along the transport path between the preliminary datum and the delivery datum.Type: ApplicationFiled: July 21, 2009Publication date: January 27, 2011Applicant: XEROX CORPORATIONInventors: Joannes N.M. deJong, Lloyd A. Williams, Marina L. Tharayil
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Patent number: 7872746Abstract: A continuous high resolution fluid level monitoring system is provided by embodiments of the present invention. This continuous high resolution fluid level monitoring system includes a unique fluid level sensor having a point light source, parabolic reflector, sensor array, and detection, processing and control system. The point light source illumines a parabolic reflector wherein the point light source is located at the focus of the parabolic reflector. The parabolic reflector reflects light from the point light source to produce a parallel light curtain. This parallel light curtain is parallel to an axis of symmetry of the parabolic reflector. The parallel light curtain illumines a chamber such as a chamber in an ophthalmic surgical device used to contain surgical fluid. The sensor array coupled to the chamber detects the parallel light curtain illuminating the chamber. The sensor array provides an output to a detection/processing/control system in order to determine the fluid level within the chamber.Type: GrantFiled: December 13, 2007Date of Patent: January 18, 2011Assignee: Alcon, Inc.Inventors: Shawn X. Gao, David Lloyd Williams, T. Scott Rowe, Daryush Agahi
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Publication number: 20100327513Abstract: A sheet transport system and method including a first drive module including a frame. A first drive wheel is rotatably disposed on the frame. A first drive motor is operably connected to the first drive wheel and disposed on the frame. The first drive module is pivotally secured to a structure. A first idler wheel corresponds to the first drive wheel. An actuator is operably engagable with the first drive module. The actuator is configured to move the first drive module to cause the first drive wheel to move between an open position and a closed position. The first drive wheel is configured to propel a sheet in the closed position and to not propel a sheet in the open position.Type: ApplicationFiled: June 30, 2009Publication date: December 30, 2010Applicant: XEROX CORPORATIONInventors: Paul N. Richards, Lloyd A. Williams, Joannes N.M. DeJong, Matthew Dondiego
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Publication number: 20100301545Abstract: Accurate sheet leading edge registration system and method including a first and second nip assembly, a first sheet leading edge sensor and a controller. The first and second nip assemblies being spaced apart from one another. The first sheet leading edge sensor capable of detecting an arrival of a leading edge of a sheet at a point in the process direction. The arrival being associated with engagement of the first and second nip assemblies with the sheet. The controller capable of imparting a rotational skew velocity to the sheet using the first and second nip assemblies. A center of rotation of the skew velocity being offset laterally from a center of the sheet leading edge. The method includes providing at least the above-mentioned nip assemblies, first sheet leading edge sensor and controller.Type: ApplicationFiled: May 29, 2009Publication date: December 2, 2010Applicant: XEROX CORPORATIONInventors: Joannes deJong, Lloyd A. Williams
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Publication number: 20100306539Abstract: A method and system for controlling distribution of content through a communications network uses a second, parallel network for delivery of a transaction indicia to a requesting party. The use of the parallel network enables the transaction indicia to be forwarded to the party independently of the communications network, thereby reducing the probability of a party fraudulently obtaining delivery of the content. Additionally, information associated with the parallel network can be used to restrict distribution of the content to parties within a predetermined domain, such as, for example, a geographical region. The content may be delivered to the party in an encrypted form, preferably using an encryption algorithm and key designed to enable decryption of the content on only the content delivery device from which the request for the content was originated.Type: ApplicationFiled: July 2, 2010Publication date: December 2, 2010Applicant: BELL CANADAInventors: L. Lloyd WILLIAMS, Alexander MARKMAN, David Edward JOHNSTON, William B. CRAGO
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Patent number: 7837193Abstract: Systems and methods for positioning a sheet in a feed path including at least one sheet drive roller driven in a rotational direction by a drive shaft in which the drive shaft translates in a lengthwise direction along the axis of the drive shaft. A power shaft rotates about the same axis as the drive shaft and is driven by a power source that is fixedly mounted in the system. The power shaft is fixed to the drive shaft by a flexible coupling that allows the drive shaft and the power shaft to move relative to one another in the lengthwise direction along the axis while maintaining corresponding rotational motion between the power shaft and the drive shaft.Type: GrantFiled: March 28, 2007Date of Patent: November 23, 2010Assignee: Xerox CorporationInventors: Barry Paul Mandel, Lloyd A. Williams
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Publication number: 20100276877Abstract: Systems for moving a moveable drive module in a cross-process direction are disclosed. A system includes a moveable drive module including a drive roll and a translation drive motor capable of moving the moveable drive module in a cross-process direction. The system may optionally include a plurality of idler rolls, each configured to be associated with the drive roll when the moveable drive module is in an associated position. Optionally, the moveable drive module may further include an idler roll associated with the drive roll. Alternately, the system may further include a moveable idler module including an idler roll and a translation drive motor capable of moving the moveable idler module in a cross-process direction.Type: ApplicationFiled: April 30, 2009Publication date: November 4, 2010Applicant: XEROX CORPORATIONInventors: Paul N. Richards, Lloyd A. Williams, Joannes N.M. deJong, Matthew Dondiego
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Publication number: 20100278573Abstract: A print device for registering a printable medium during a duplex printing process. The print device includes a controller, at least one leading edge sensor operably connected to the controller, the at least one leading edge sensor configured to detect a leading edge of a printable medium having a first and a second side when the first side is facing away from the at least one leading edge sensor, a coarse registration sensor operably connected to the controller, the coarse registration sensor configured to detect a leading edge of the printable medium when the second side of the printable medium is facing away from the at least one leading edge sensor, and at least one trail edge sensor operably connected to the controller, the at least one trail edge sensor configured to detect a trailing edge of the printable medium.Type: ApplicationFiled: April 30, 2009Publication date: November 4, 2010Applicant: Xerox CorporationInventors: Paul N. Richards, Lloyd A. Williams, Joannes N.M DeJong, Matthew Dondiego
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Publication number: 20100276873Abstract: Systems for moving a moveable drive module in a cross-process direction are disclosed. A system includes a moveable drive module and a cross-process positioning system. The moveable drive module includes a drive roll. The cross-positioning system is capable of moving the moveable drive module in a cross-process direction. The system may optionally include a plurality of idler rolls, each configured to be associated with the drive roll when the moveable drive module is in an associated position. The moveable drive module may alternately include an idler roll associated with the drive roll. Alternately, the cross-positioning system may further be capable of moving a moveable idler module in a cross-process direction. Still alternately, the system may further include a moveable idler module including an idler roll and a translation drive motor capable of moving the moveable idler module in a cross-process direction.Type: ApplicationFiled: April 30, 2009Publication date: November 4, 2010Applicant: XEROX CORPORATIONInventors: Paul N. Richards, Lloyd A. Williams, Joannes N.M. deJong, Matthew Dondiego
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Publication number: 20100276872Abstract: A method and system feeds a sheet through a media path in a process direction. When the sheet is within a sheet registration carriage of the media path, the method and system align the sheet to a predetermined lateral position within the media path. The aligning process comprises unevenly activating nips within the sheet registration carriage and moving the sheet registration carriage in a lateral direction perpendicular to the process direction. When the sheet is within the sheet registration carriage, the method and system determine a lateral movement distance the sheet registration carriage will move in the lateral direction during the aligning of the sheet. If the lateral movement distance exceeds a predetermined distance, the method and system move the sheet registration carriage toward the starting position after the nips have released the sheet, but before the sheet has passed by the nips.Type: ApplicationFiled: April 29, 2009Publication date: November 4, 2010Applicant: XEROX CORPORATIONInventors: Martin Krucinski, Saurabh Prabhat, Joannes N.M. deJong, Lloyd A. Williams
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Patent number: 7806404Abstract: Systems and methods for reducing sheet skew in a document processing device are disclosed. A document processing device may include a plurality of nips, a sheet skew measurement system, a feedback controller and an actuator. Each nip may include an idler wheel and a drive wheel. The sheet skew measurement system may be configured to measure sheet skew for a sheet. The feedback controller may be configured to generate a control signal in response to the sheet skew measured by the sheet skew measurement system. The actuator may be configured to adjust a loading force applied to a sheet by an idler wheel for at least one nip in response to the control signal.Type: GrantFiled: November 9, 2007Date of Patent: October 5, 2010Assignee: Xerox CorporationInventors: Joannes N. M. deJong, Lloyd A. Williams
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Publication number: 20100237558Abstract: A method and system feeds sheets through a media path in a process direction and moves a laterally movable sheet registration carriage (positioned within the media path) in a lateral direction perpendicular to the process direction. It determines the lateral error of the sheets within the media path before the sheets enter the sheet registration carriage, using first sensors positioned within the media path. This allows the sheet registration carriage to be moved to a variable lateral starting position (as opposed to a consistent reset position or centered reset position) before the sheets enter the sheet registration carriage based on the error of the sheets as determined by the first sensors. The error can be the amount of lateral error, or simply can be a classification of lateral error (right error, left error, etc.).Type: ApplicationFiled: March 18, 2009Publication date: September 23, 2010Applicant: XEROX CORPORATIONInventors: Saurabh Prabhat, Joannes N.M. deJong, Lloyd A. Williams
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Publication number: 20100212223Abstract: A plant support with securing ring having a rigid unitary support comprising a lower, vertical, straight segment for pushing into earth and an upper support head shaped substantially as an incomplete circle, positioned horizontally and at a right angle to the lower segment of the same unitary component. In addition, a second component, an incomplete ring formed of semi-rigid material, a capture ring, significantly thicker than the upper support head incomplete circle material, contains a groove around the outer circumference which, when capture ring is rotatably placed within the incomplete circle in the upper support head of the rigid unitary support, receives incomplete circle which, in turn, holds capture ring in place while allowing capture ring to be rotated, thereby closing off the gap in the incomplete circles of both the capture ring and the upper support head, thus holding a plant stem securely within the closed circle form.Type: ApplicationFiled: February 26, 2009Publication date: August 26, 2010Inventor: Lloyd William Gibbons
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Patent number: 7770884Abstract: A method and apparatus for fluff management in an image production device is disclosed. The method may include fluffing a stack of media with a predetermined amount of air flow, sensing sheet separation in the media stack, determining if the sheet separation meets predetermined criteria, wherein if the sheet separation does not meet the predetermined criteria, adjusting the air flow used for fluffing the media stack.Type: GrantFiled: August 7, 2008Date of Patent: August 10, 2010Assignee: Xerox CorporationInventors: Robert Alan Clark, Lloyd Williams
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Patent number: 7764370Abstract: Embodiments of the present invention provide a system and method for determining the location of the bottom of a fluid chamber in a surgical cassette to calibrate the surgical system. According to one embodiment, the surgical cassette is shaped to allow light from a light source to pass unobstructed to a linear sensor array in an area that is a known distance from the bottom of a fluid chamber. Light rays intersected by solid cassette material, on the other hand, will insufficiently illuminate the linear sensor array. Because the slot is a known distance from the bottom of the chamber, the location of the bottom of the chamber can be determined by determining the transition between illuminated and insufficiently illuminated portions of the linear sensor array.Type: GrantFiled: June 30, 2006Date of Patent: July 27, 2010Assignee: Alcon, Inc.Inventors: David Lloyd Williams, Shawn X. Gao, David M. Domash, Nader Nazarifar
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Patent number: 7756274Abstract: A system for providing a listener with an augmented audio reality in a geographical environment said system comprising a position locating system for determining a current position and orientation of a listener in.Type: GrantFiled: August 29, 2006Date of Patent: July 13, 2010Assignee: Dolby Laboratories Licensing CorporationInventors: Leonard Layton, David Stanley McGrath, Nigel Lloyd William Heyler, Stephen James Bennett, Richard James Cartwright, Geoffrey Alexander Drane
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Patent number: 7731188Abstract: A sheet handling system comprising a sheet registration system having sheet registration nips and a receiving system for a sheet including a capturing point for engaging said sheet. Auxiliary nips are positioned between the sheet registration nips and the receiving station. The auxiliary nips are moveable between an open and closed position. A controller receives a signal indicative of the length of the sheet and sends a signal to the auxiliary nips to be in a sheet engaging position when the length of the sheet is less than the distance between the sheet feeding nips and the capturing point of the receiving station and be in an open position if the length of the sheet is greater than the distance between the sheet registration nips and the capturing point of the receiving station. In another embodiment, the auxiliary nips are maintained in their open position until the trailing edge of a sheet is about to leave the sheet registration nips, at which point the auxiliary nips are closed.Type: GrantFiled: July 18, 2007Date of Patent: June 8, 2010Assignee: Xerox CorporationInventors: Joannes N. M. deJong, Lloyd A. Williams, Jack G. Elliot
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Patent number: 7717533Abstract: Embodiments according to the present disclosure provide methods and systems of determining nip velocity profiles in a medium registration system, including parameterizing a set of equations into a set of standard parameters, the set of equations representing an analytic form of the nip velocity profiles; determining values of the parameters through an iteration process; and determining the nip velocity profiles based on the determined values of the parameters. The embodiments separately provide systems and methods of simulating a medium registration process, including inputting an error parameter to a velocity nominal profile of a nip in a medium registration system; determining an output value of the velocity nominal profile; and using the output value in a regression algorithm to obtain a simulated relationship, the simulated relationship indicative of a manner in which the error parameter influences the output value.Type: GrantFiled: August 30, 2005Date of Patent: May 18, 2010Assignee: Xerox CorporationInventors: Joannes N. M. De Jong, Vittorio Castelli, Daniel C. Park, Lloyd A. Williams
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Patent number: 7706520Abstract: A system and method for facilitating transcription of an audio recording, with auditing. An IVR (Interactive Voice Response) unit makes a set of audio recordings of a caller's input during a call. The set of audio recordings is stored in a database and queued for transcription by remote agents. The recordings are forwarded to a first agent who listens to the audio and completes a form with text corresponding to the audio. The system then determines whether to audit the first agent's transcription by having another agent transcribe the same set of recordings. The recordings may be re-queued and transcribed multiple times, until two (or more) of the transcriptions match, or until some threshold number of transcriptions have been obtained. An agent may contact the caller (e.g., via telephone or electronic mail) if a recording cannot be fully transcribed.Type: GrantFiled: November 8, 2005Date of Patent: April 27, 2010Assignee: LiveOps, Inc.Inventors: Christopher R. Waterson, Lloyd William Tabb, Michael Toy