Patents by Inventor Sean T. Evans
Sean T. Evans 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: 11923470Abstract: A method includes forming an assembly of layers including an InP cap layer on an InGaAs absorption region layer, wherein the InGaAs layer is on an n-InP layer, and wherein an underlying substrate layer underlies the n-InP layer. The method includes removing a portion of the InP cap and n-InP layer by dry etching.Type: GrantFiled: October 24, 2022Date of Patent: March 5, 2024Assignee: Sensors Unlimited, Inc.Inventors: Wei Zhang, Douglas Stewart Malchow, Michael J. Evans, Paul L. Bereznycky, Sean T. Houlihan
-
Patent number: 9672306Abstract: Embodiments herein describe performing an engineering change order (ECO) after a physical design team has begun (or finished) a physical design (PD) netlist. However, the ECO may describe changes or additions to the logic and/or nets using component names found in a design netlist that is different than the PD netlist. Embodiments herein rely on generating an equivalents nets file that the maps the components in the design netlist to the components in the PD netlist. When performing an ECO, the PD team can use this file to map the components in the ECO (which are based on the design netlist) to all the equivalent components in the PD netlist. The PD team then selects one of the equivalent components to alter as indicated in the ECO.Type: GrantFiled: September 3, 2015Date of Patent: June 6, 2017Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Sean T. Evans, Thomas A. Haselhorst, Scott H. Mack
-
Publication number: 20170068754Abstract: Embodiments herein describe performing an engineering change order (ECO) after a physical design team has begun (or finished) a physical design (PD) netlist. However, the ECO may describe changes or additions to the logic and/or nets using component names found in a design netlist that is different than the PD netlist. Embodiments herein rely on generating an equivalents nets file that the maps the components in the design netlist to the components in the PD netlist. When performing an ECO, the PD team can use this file to map the components in the ECO (which are based on the design netlist) to all the equivalent components in the PD netlist. The PD team then selects one of the equivalent components to alter as indicated in the ECO.Type: ApplicationFiled: September 3, 2015Publication date: March 9, 2017Inventors: Sean T. EVANS, Thomas A. HASELHORST, Scott H. MACK
-
Publication number: 20170068763Abstract: Embodiments herein describe performing an engineering change order (ECO) after a physical design team has begun (or finished) a physical design (PD) netlist. However, the ECO may describe changes or additions to the logic and/or nets using component names found in a design netlist that is different than the PD netlist. Embodiments herein rely on generating an equivalents nets file that the maps the components in the design netlist to the components in the PD netlist. When performing an ECO, the PD team can use this file to map the components in the ECO (which are based on the design netlist) to all the equivalent components in the PD netlist. The PD team then selects one of the equivalent components to alter as indicated in the ECO.Type: ApplicationFiled: September 3, 2015Publication date: March 9, 2017Inventors: Sean T. EVANS, Thomas A. HASELHORST, Scott H. MACK
-
Patent number: 9576091Abstract: Embodiments herein describe performing an engineering change order (ECO) after a physical design team has begun (or finished) a physical design (PD) netlist. However, the ECO may describe changes or additions to the logic and/or nets using component names found in a design netlist that is different than the PD netlist. Embodiments herein rely on generating an equivalents nets file that the maps the components in the design netlist to the components in the PD netlist. When performing an ECO, the PD team can use this file to map the components in the ECO (which are based on the design netlist) to all the equivalent components in the PD netlist. The PD team then selects one of the equivalent components to alter as indicated in the ECO.Type: GrantFiled: September 3, 2015Date of Patent: February 21, 2017Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Sean T. Evans, Thomas A. Haselhorst, Scott H. Mack
-
Patent number: 9087172Abstract: A method, system and computer program product are provided for implementing enhanced net routing for congestion resolution of non-rectangular or rectangular hierarchical macro designs of an integrated circuit chip. Congested macro nets near a macro boundary are identified. Wiring channels are reserved outside the macro boundary, allowing congested macro nets to be routed outside the physical boundary of the macro while still being logically contained within the macro.Type: GrantFiled: October 7, 2013Date of Patent: July 21, 2015Assignee: International Business Machines CorporationInventors: Matthew R. Ellavsky, Sean T. Evans, Timothy D. Helvey, Brandon E. Schenck, Jason L. Van Vreede, Bradley C. White
-
Publication number: 20150100937Abstract: A method, system and computer program product are provided for implementing enhanced net routing for congestion resolution of non-rectangular or rectangular hierarchical macro designs of an integrated circuit chip. Congested macro nets near a macro boundary are identified. Wiring channels are reserved outside the macro boundary, allowing congested macro nets to be routed outside the physical boundary of the macro while still being logically contained within the macro.Type: ApplicationFiled: October 7, 2013Publication date: April 9, 2015Applicant: International Business Machines CorporationInventors: Matthew R. Ellavsky, Sean T. Evans, Timothy D. Helvey, Brandon E. Schenck, Jason L. Van Vreede, Bradley C. White
-
Patent number: 8826214Abstract: A method, system and computer program product are provided for implementing an enhanced Z-directional macro port assignment or three-dimensional port creation for random logic macros of heterogeneous hierarchical integrated circuit chips. An initial port placement is provided on a layer for a macro. The initial port placement is expanded to provide a three-dimensional port shape including a plurality of metal layers along a z-axis. Wire routing of each of the macro level and a chip top level is defined within the expanded three-dimensional port shape. Each unnecessary metal layer of the expanded three-dimensional port shape is removed, providing a final three-dimensional port shape.Type: GrantFiled: March 14, 2013Date of Patent: September 2, 2014Assignee: International Business Machines CorporationInventors: Matthew R. Ellavsky, Sean T. Evans, Timothy D. Helvey, Phillip P. Normand, II, Jason L. Van Vreede, Bradley C. White
-
Patent number: 8689170Abstract: In an embodiment, a buffer bay is represented with a moveable object that has a location within a unit in a netlist. The location of the moveable object that represents the buffer bay is changed to a new location in the netlist if changing the location improves placement within the unit. In an embodiment, a net weight of a net that connects the moveable object to an artificial pin is considered in determining whether to change the location to the new location. In an embodiment a bounding area that encompasses the location is considered in determining whether to change the location to the new location.Type: GrantFiled: February 27, 2013Date of Patent: April 1, 2014Assignee: International Business Machines CorporationInventors: Matthew R. Ellavsky, Sean T. Evans, Timothy D. Helvey, Phillip P. Normand, Jason L. VanVreede, Bradley C. White
-
Patent number: 8448121Abstract: A method, system and computer program product are provided for implementing an enhanced Z-directional macro port assignment or three-dimensional port creation for random logic macros of heterogeneous hierarchical integrated circuit chips. An initial port placement is provided on a layer for a macro. The initial port placement is expanded to provide a three-dimensional port shape including a plurality of metal layers along a z-axis. Wire routing of each of the macro level and a chip top level is defined within the expanded three-dimensional port shape. Each unnecessary metal layer of the expanded three-dimensional port shape is removed, providing a final three-dimensional port shape.Type: GrantFiled: August 11, 2011Date of Patent: May 21, 2013Assignee: International Business Machines CorporationInventors: Matthew R. Ellavsky, Sean T. Evans, Timothy D. Helvey, Phillip P. Normand, Jason L. Van Vreede, Bradley C. White
-
Patent number: 8413104Abstract: In an embodiment, a buffer bay is represented with a moveable object that has a location within a unit in a netlist. The location of the moveable object that represents the buffer bay is changed to a new location in the netlist if changing the location improves placement within the unit. In an embodiment, a net weight of a net that connects the moveable object to an artificial pin is considered in determining whether to change the location to the new location. In an embodiment a bounding area that encompasses the location is considered in determining whether to change the location to the new location.Type: GrantFiled: May 12, 2011Date of Patent: April 2, 2013Assignee: International Business Machines CorporationInventors: Matthew R. Ellavsky, Sean T. Evans, Timothy D. Helvey, Phillip P. Normand, Jason L. Van Vreede, Bradley C. White
-
Publication number: 20130042214Abstract: A method, system and computer program product are provided for implementing an enhanced Z-directional macro port assignment or three-dimensional port creation for random logic macros of heterogeneous hierarchical integrated circuit chips. An initial port placement is provided on a layer for a macro. The initial port placement is expanded to provide a three-dimensional port shape including a plurality of metal layers along a z-axis. Wire routing of each of the macro level and a chip top level is defined within the expanded three-dimensional port shape. Each unnecessary metal layer of the expanded three-dimensional port shape is removed, providing a final three-dimensional port shape.Type: ApplicationFiled: August 11, 2011Publication date: February 14, 2013Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Matthew R. Ellavsky, Sean T. Evans, Timothy D. Helvey, Phillip P. Normand, Jason L. Van Vreede, Bradley C. White
-
Publication number: 20120290995Abstract: In an embodiment, a buffer bay is represented with a moveable object that has a location within a unit in a netlist. The location of the moveable object that represents the buffer bay is changed to a new location in the netlist if changing the location improves placement within the unit. In an embodiment, a net weight of a net that connects the moveable object to an artificial pin is considered in determining whether to change the location to the new location. In an embodiment a bounding area that encompasses the location is considered in determining whether to change the location to the new location.Type: ApplicationFiled: May 12, 2011Publication date: November 15, 2012Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Matthew R. Ellavsky, Sean T. Evans, Timothy D. Helvey, Phillip P. Normand, Jason L. Van Vreede, Bradley C. White