Patents by Inventor David Overhauser
David Overhauser 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: 8381151Abstract: Disclosed are systems and methods for electrical verification of integrated circuits. Methodologies are described for verification of the power and ground distribution systems (PDS) for system-on-a-chip (SoC) and the verification of the interaction of the PDS with the behavior of integrated circuits.Type: GrantFiled: January 19, 2011Date of Patent: February 19, 2013Assignee: Cadence Design Systems, Inc.Inventors: Steffen Rochel, David Overhauser, Gregory Steele, Kung Hsu
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Patent number: 8370779Abstract: Disclosed are systems and methods for electrical verification of integrated circuits. Methodologies are described for verification of the power and ground distribution systems (PDS) for system-on-a-chip (SoC) and the verification of the interaction of the PDS with the behavior of integrated circuits.Type: GrantFiled: January 19, 2011Date of Patent: February 5, 2013Assignee: Cadence Design Systems, Inc.Inventors: Steffen Rochel, David Overhauser, Gregory Steele, Kung Hsu
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Patent number: 8370778Abstract: Disclosed are systems and methods for electrical verification of integrated circuits. Methodologies are described for verification of the power and ground distribution systems (PDS) for system-on-a-chip (SoC) and the verification of the interaction of the PDS with the behavior of integrated circuits.Type: GrantFiled: January 19, 2011Date of Patent: February 5, 2013Assignee: Cadence Design Systems, Inc.Inventors: Steffen Rochel, David Overhauser, Gregory Steele, Kung Hsu
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Patent number: 8365125Abstract: Disclosed are systems and methods for electrical verification of integrated circuits. Methodologies are described for verification of the power and ground distribution systems (PDS) for system-on-a-chip (SoC) and the verification of the interaction of the PDS with the behavior of integrated circuits.Type: GrantFiled: January 19, 2011Date of Patent: January 29, 2013Assignee: Cadence Design Systems, Inc.Inventors: Steffen Rochel, David Overhauser, Gregory Steele, Kung Hsu
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Patent number: 8316336Abstract: Disclosed are methods, systems, and structures for implementing interconnect modeling by using a test structure which include a variation of physical wire structures between local interconnects and distant interconnects. According to one approach, the impact of variations of the physical properties for neighborhood wires are considered for the electrical modeling of interconnects. This variation between the local and distant wire characteristics allows more accurate and robust interconnect modeling to be created.Type: GrantFiled: December 21, 2009Date of Patent: November 20, 2012Assignee: Cadence Design Systems, Inc.Inventor: David Overhauser
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Patent number: 7882464Abstract: Disclosed are systems and methods for electrical verification of integrated circuits. Methodologies are described for verification of the power and ground distribution systems (PDS) for system-on-a-chip (SoC) and the verification of the interaction of the PDS with the behavior of integrated circuits.Type: GrantFiled: February 13, 2006Date of Patent: February 1, 2011Assignee: Cadence Design Systems, Inc.Inventors: Steffen Rochel, David Overhauser, Gregory Steele, Kung Hsu
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Patent number: 7653519Abstract: Disclosed are methods, systems, and structures for implementing interconnect modeling by using a test structure which include a variation of physical wire structures between local interconnects and distant interconnects. According to one approach, the impact of variations of the physical properties for neighborhood wires are considered for the electrical modeling of interconnects. This variation between the local and distant wire characteristics allows more accurate and robust interconnect modeling to be created.Type: GrantFiled: April 13, 2006Date of Patent: January 26, 2010Assignee: Cadence Design Systems, Inc.Inventor: David Overhauser
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Publication number: 20050240894Abstract: An integrated circuit has a metal layer that includes conductors to provide interconnectivity for components of the integrated circuit chip. The metal layer is divided into at least two sections, such that a first section has a preferred direction and the second section has a preferred wiring direction that is different from the first preferred direction. The first and second preferred directions on a single metal layer may consist of any direction. The metal layer may be divided into more than two sections, wherein each section has a preferred wiring direction. Wiring geometries for multi-level metal layers are also disclosed.Type: ApplicationFiled: January 6, 2005Publication date: October 27, 2005Inventors: Steven Teig, David Overhauser, Akira Fujimura
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Publication number: 20050185253Abstract: Due to an ever growing shortage of conventional energy sources, there is an increasingly intense interest in harnessing solar energy. The instant invention can contribute to the goal of achieving environmentally clean solar energy to be competitive with conventional energy sources. A novel method is described for manufacturing a transparent sheet with an embedded array of mirrored spheroidal micro-balls for use in a solar energy concentrator, and analogous applications such as optical switches and solar rocket assist. The micro-balls are covered with a thin spherical shell of lubricating liquid so that they are free to rotate in an almost frictionless encapsulation in the sheet. Novel method and apparatus are presented for producing the preferred embodiment of a close-packed monolayer of the array of mirrored micro-balls.Type: ApplicationFiled: February 25, 2004Publication date: August 25, 2005Inventors: Mario Rabinowitz, David Overhauser
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Patent number: 6900540Abstract: An integrated circuit has a metal layer that includes conductors to provide interconnectivity for components of the integrated circuit chip. The metal layer is divided into at least two sections, such that a first section has a preferred direction and the second section has a preferred wiring direction that is different from the first preferred direction. The first and second preferred directions on a single metal layer may consist of any direction. The metal layer may be divided into more than two sections, wherein each section has a preferred wiring direction. Wiring geometries for multi-level metal layers are also disclosed.Type: GrantFiled: January 11, 2002Date of Patent: May 31, 2005Assignee: Cadence Design Systems, Inc.Inventors: Steven Teig, David Overhauser, Akira Fujimura
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Patent number: 6870255Abstract: An integrated circuit has a metal layer that includes conductors to provide interconnectivity for components of the integrated circuit chip. The metal layer is divided into at least two sections, such that a first section has a preferred direction and the second section has a preferred wiring direction that is different from the first preferred direction. The first and second preferred directions on a single metal layer may consist of any direction. The metal layer may be divided into more than two sections, wherein each section has a preferred wiring direction. Wiring geometries for multi-level metal layers are also disclosed.Type: GrantFiled: December 15, 2000Date of Patent: March 22, 2005Assignee: Cadence Design Systems, Inc.Inventors: Steven Teig, David Overhauser, Akira Fujimura
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Patent number: 6858939Abstract: An integrated circuit has a metal layer that includes conductors to provide interconnectivity for components of the integrated circuit chip. The metal layer is divided into at least two sections, such that a first section has a preferred direction and the second section has a preferred wiring direction that is different from the first preferred direction. The first and second preferred directions on a single metal layer may consist of any direction. The metal layer may be divided into more than two sections, wherein each section has a preferred wiring direction. Wiring geometries for multi-level metal layers are also disclosed.Type: GrantFiled: June 3, 2001Date of Patent: February 22, 2005Assignee: Cadence Design Systems, Inc.Inventors: Steven Teig, David Overhauser, Akira Fujimura
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Patent number: 6858928Abstract: An integrated circuit has a metal layer that includes conductors to provide interconnectivity for components of the integrated circuit chip. The metal layer is divided into at least two sections, such that a first section has a preferred direction and the second section has a preferred wiring direction that is different from the first preferred direction. The first and second preferred directions on a single metal layer may consist of any direction. The metal layer may be divided into more than two sections, wherein each section has a preferred wiring direction. Wiring geometries for multi-level metal layers are also disclosed.Type: GrantFiled: December 7, 2000Date of Patent: February 22, 2005Assignee: Cadence Design Systems, Inc.Inventors: Steven Teig, David Overhauser, Akira Fujimura
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Patent number: 6858935Abstract: An integrated circuit has a metal layer that includes conductors to provide interconnectivity for components of the integrated circuit chip. The metal layer is divided into at least two sections, such that a first section has a preferred direction and the second section has a preferred wiring direction that is different from the first preferred direction. The first and second preferred directions on a single metal layer may consist of any direction. The metal layer may be divided into more than two sections, wherein each section has a preferred wiring direction. Wiring geometries for multi-level metal layers are also disclosed.Type: GrantFiled: January 11, 2002Date of Patent: February 22, 2005Assignee: Cadence Design Systems, Inc.Inventors: Steven Teig, David Overhauser, Akira Fujimura