Patents by Inventor Paul Joseph Stewart
Paul Joseph Stewart 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: 7581096Abstract: We present technology that allows layman computer users to simply create, provision, and maintain secured infrastructure—an instant PKI. This technology can be used in a wide variety of applications including wired and wireless networks, secure sensor networks (such as medical networks), emergency alert networks, as well as simply and automatically provisioning network devices whether secure or not.Type: GrantFiled: September 5, 2003Date of Patent: August 25, 2009Assignee: Xerox CorporationInventors: Dirk Balfanz, Diana K. Smetters, Paul Joseph Stewart, Glenn E. Durfee, Rebecca E. Grinter, Hao-Chi Wong
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Patent number: 7546540Abstract: A method of using two or more display units with different resolutions which have been combined such that the geometry of images displayed across the multiple display units is preserved and the image appears to be substantially continuous to a viewer of the image. Compatibility of the sizes of image elements on different display units is achieved by using display unit-specific scaling to compensate for the different pixel sizes on the individual display units.Type: GrantFiled: December 17, 2001Date of Patent: June 9, 2009Assignee: Xerox CorporationInventors: Patrick Baudisch, Nathaniel S. Good, Paul Joseph Stewart
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Patent number: 7475356Abstract: A system utilizing two or more display units with different resolutions are combined such that the geometry of images displayed across the multiple display units is preserved and the image appears to be substantially continuous to a viewer of the image. Compatibility of the sizes of image elements on different display units is achieved by using display unit-specific scaling to compensate for the different pixel sizes on the individual display units.Type: GrantFiled: December 17, 2001Date of Patent: January 6, 2009Assignee: Xerox CorporationInventors: Patrick Baudisch, Nathaniel S. Good, Paul Joseph Stewart
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Patent number: 7333071Abstract: A method of using two or more display units with different resolutions which have been combined such that the geometry of images displayed across the multiple display units is preserved and the image appears to be substantially continuous to a viewer of the image. Compatibility of the sizes of image elements on different display units is achieved by using display unit-specific scaling to compensate for the different pixel sizes on the individual display units.Type: GrantFiled: December 17, 2001Date of Patent: February 19, 2008Assignee: Xerox CorporationInventors: Patrick Baudisch, Nathaniel S. Good, Paul Joseph Stewart
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Patent number: 7324103Abstract: A system and method for computer-aided engineering analysis using direct mesh manipulation of a mesh model is provided. The system includes a computer system having a memory, a processor, a user input device and a display device. The method includes the steps of selecting a geometric model in a computer-aided design (CAD) format, converting the CAD model into a mesh model and evaluating the mesh model using a computer-aided engineering (CAE) analysis. The method also includes the steps of modifying a surface of the mesh model by varying a predetermined parameter using direct surface manipulation (DSM), updating the mesh model and using the updated mesh model in further CAE analysis.Type: GrantFiled: October 30, 2001Date of Patent: January 29, 2008Assignee: Ford Motor CompanyInventors: Paul Joseph Stewart, Anne Marsan, Yifan Chen
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Patent number: 7275156Abstract: We present technology that allows layman computer users to simply create, provision, and maintain secured infrastructure—an instant PKI. This technology can be used in a wide variety of applications including wired and wireless networks, secure sensor networks (such as medical networks), emergency alert networks, as well as simply and automatically provisioning network devices whether secure or not.Type: GrantFiled: September 5, 2003Date of Patent: September 25, 2007Assignee: Xerox CorporationInventors: Dirk Balfanz, Diana K. Smetters, Paul Joseph Stewart, Glenn E. Durfee, Rebecca E. Grinter, Hao-Chi Wong
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Patent number: 7191104Abstract: A system and method of real-time collision detection between solid geometric objects is provided. The system includes a computer system, a computer-generated geometric model and a haptic device in communication with the computer system having a haptic end effector for transmitting information between a user and the geometric objects. The method includes the steps of representing a moving object as a point cloud and a stationary object as a mesh, and partitioning the mesh into an organized data structure. The method also includes the steps of identifying a constraint set and a collision set. The method further includes the steps of rendering the constraint set by moving the moving object so that the set of active points do not penetrate into the mesh, and providing force feedback through the haptic device relative to the movement of the moving object to satisfy the constraint.Type: GrantFiled: July 11, 2002Date of Patent: March 13, 2007Assignee: Ford Global Technologies, LLCInventors: Paul Joseph Stewart, Pietro Buttolo
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Patent number: 7174280Abstract: A system and method for replacing a direct surface manipulation (DSM) surface with an independent NURBS surface patch of a geometric model. The method includes the steps of sampling data points of the DSM surface and parameterizing the sampled data points. The method also includes determining knot vectors for a fitted NURBS surface patch and setting-up an equation system. The method further includes the steps of solving the equation system for the geometric model.Type: GrantFiled: April 23, 2002Date of Patent: February 6, 2007Assignee: Ford Global Technologies, LLCInventors: Paul Joseph Stewart, Yifan Chen
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Patent number: 7155673Abstract: A system and method of interactive evaluation of a geometric model is provided. The method includes the steps of acquiring a haptic device position and orientation with respect to a surface of the geometric model and mapping the haptic device position and orientation into a geometric model coordinate reference system. The method also includes the steps of determining a closest point position and orientation on the surface of the geometric model to the haptic device position and extracting a surface property at the closest point position and orientation. The method further includes the steps of determining a stick-to-surface force and a property feedback force using the surface property at the closet point position and orientation and applying the stick-to-surface force and property feedback force to control a location and force output of the haptic device.Type: GrantFiled: February 1, 2001Date of Patent: December 26, 2006Assignee: Ford Global Technologies, LLCInventors: Paul Joseph Stewart, Pietro Buttolo, Yifan Chen
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Patent number: 7079996Abstract: A system and method for design of experiments (DOE) using direct surface manipulation of a mesh model. The method includes the steps of selecting a geometric model in a computer-aided design (CAD) format, converting the geometric model into a mesh model and evaluating the mesh model using a computer-aided engineering (CAE) analysis. The method also includes the steps of determining whether to continue generating the design of experiments response, and modifying a surface of the mesh model by varying a predetermined parameter, wherein the surface is modified using direct surface manipulation (DSM), the mesh model is updated and the updated mesh model is used in continuing generating the design of experiments response, if determined to continue the design of experiments. The method further includes the steps of using the results of the CAE analysis for the design of experiments.Type: GrantFiled: May 30, 2001Date of Patent: July 18, 2006Assignee: Ford Global Technologies, LLCInventors: Paul Joseph Stewart, Pietro Buttolo, Yifan Chen
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Patent number: 7069202Abstract: A system and method for virtual interactive design and evaluation and manipulation of a vehicle mechanism using a haptic-user interface is provided. The system includes a computer system and a haptic interface operatively in communication with the computer system, whereby the haptic interface includes a haptic end effector device for transmitting information between a user and a digital model as the user interactively creates, modifies, and evaluates kinematic and dynamic properties of the vehicle mechanism using the haptic end effector device.Type: GrantFiled: January 11, 2002Date of Patent: June 27, 2006Assignee: Ford Global Technologies, LLCInventors: Paul Joseph Stewart, Aaron West, Pietro Buttolo
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Publication number: 20060129797Abstract: Systems and methods for establishing an authenticated and encrypted network connection in a boot protocol, and specifying the boot image to be loaded by a client, are disclosed. A hardware token or other portable medium, such as a USB drive or device, CD, mini-CD, or floppy diskette, is used to store authentication and/or identification information for a server. A client uses the information on the token to authenticate the network server upon initial connection to the network and request a boot image. Furthermore, the client and server may use the authentication information from the token to establish secure communications and mutually authenticate each other.Type: ApplicationFiled: December 15, 2004Publication date: June 15, 2006Inventors: Glenn Durfee, Dirk Balfanz, Diana Kathryn Smetters, Paul Joseph Stewart
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Patent number: 6889176Abstract: A method for automatically reconstructing topographical information for a given mesh, altering the mesh by introducing, deleting, or splitting existing polygons when needed. An OctTree space decomposition is used to achieve a log2-complexity search method to find the closest vertex in the polygonal soup to a given point in space. Linear complexities are used to find triangles connected to a given vertex and all triangles connected to a given triangle. The triangles are split to enforce conductivity.Type: GrantFiled: July 24, 2000Date of Patent: May 3, 2005Assignee: Ford Global Technologies, LLCInventors: Pietro Buttolo, Paul Joseph Stewart
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Patent number: 6801187Abstract: A system and method of interactive evaluation and manipulation of a geometric model is provided. The system includes a computer system and a haptic interface operatively in communication with the computer system, whereby the haptic interface includes a haptic end effector device for transmitting information between a user and a geometric model as the user browses or edit the surface of the geometric model using the haptic end effector device.Type: GrantFiled: June 22, 2001Date of Patent: October 5, 2004Assignee: Ford Global Technologies, LLCInventors: Paul Joseph Stewart, Pietro Buttolo, Yifan Chen
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Patent number: 6760113Abstract: A measurement system (10) for accurately measuring the surface geometry of a part (32) in three dimensions includes a laser (12) for emitting a laser beam (14). The laser beam (14) is transmitted to a birefringent crystal (16) which splits the laser beam (14) into a pair of beams (18,20). The pair of beams (18,20) are then subjected to a phase shift by a liquid crystal system (24) as controlled by a computer (26). The pair of beams (18,20) are then expanded in order to form a fringe pattern (30) on the surface of the part (32) to be measured.Type: GrantFiled: March 20, 2001Date of Patent: July 6, 2004Assignee: Ford Global Technologies, LLCInventors: Fang Frank Chen, James Stewart Rankin, II, Mumin Song, Paul Joseph Stewart
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Publication number: 20040107366Abstract: We present technology that allows layman computer users to simply create, provision, and maintain secured infrastructure—an instant PKI. This technology can be used in a wide variety of applications including wired and wireless networks, secure sensor networks (such as medical networks), emergency alert networks, as well as simply and automatically provisioning network devices whether secure or not.Type: ApplicationFiled: September 5, 2003Publication date: June 3, 2004Applicant: Xerox CorporationInventors: Dirk Balfanz, Diana K. Smetters, Paul Joseph Stewart, Glenn E. Durfee, Rebecca E. Grinter, Hao-Chi Wong
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Publication number: 20040098581Abstract: We present technology that allows layman computer users to simply create, provision, and maintain secured infrastructure—an instant PKI. This technology can be used in a wide variety of applications including wired and wireless networks, secure sensor networks (such as medical networks), emergency alert networks, as well as simply and automatically provisioning network devices whether secure or not.Type: ApplicationFiled: September 5, 2003Publication date: May 20, 2004Applicant: Xerox CorporationInventors: Dirk Balfanz, Diana K. Smetters, Paul Joseph Stewart, Glenn E. Durfee, Rebecca E. Grinter, Hao-Chi Wong
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Publication number: 20040010346Abstract: A system and method of real-time collision detection between solid geometric modes is provided. The system includes a computer system and at least one computer-generated geometric model stored in the memory of the computer system. The system also includes a haptic device in communication with the computer system, and the haptic device includes a haptic end effector for transmitting information between a user and the geometric model. The method includes the steps of representing one object from the geometric model as a point cloud and another object as a mesh, and at least one of the objects is moving, and partitioning the mesh into an organized data structure. The method also includes the steps of identifying a constraint set and identifying a collision set.Type: ApplicationFiled: July 11, 2002Publication date: January 15, 2004Inventors: Paul Joseph Stewart, Pietro Buttolo
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Publication number: 20030200066Abstract: A system and method for replacing a direct surface manipulation (DSM) surface with an independent NURBS surface patch of a geometric model. The method includes the steps of sampling data points of the DSM surface and parameterizing the sampled data points. The method also includes determining knot vectors for a fitted NURBS surface patch and setting-up an equation system. The method further includes the steps of solving the equation system for the geometric model.Type: ApplicationFiled: April 23, 2002Publication date: October 23, 2003Inventors: Paul Joseph Stewart, Yifan Chen
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Publication number: 20030132968Abstract: A system and method for virtual interactive design and evaluation and manipulation of a vehicle mechanism using a haptic-user interface is provided. The system includes a computer system and a haptic interface operatively in communication with the computer system, whereby the haptic interface includes a haptic end effector device for transmitting information between a user and a digital model as the user interactively creates, modifies, and evaluates kinematic and dynamic properties of the vehicle mechanism using the haptic end effector device.Type: ApplicationFiled: January 11, 2002Publication date: July 17, 2003Inventors: Paul Joseph Stewart, Aaron West, Pietro Buttolo