Patents by Inventor Leoncio D. Lopez
Leoncio D. Lopez 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: 9229045Abstract: Some embodiments of the present invention provide a system for in-situ characterization of a solid-state light. First, a voltage and a current of the solid-state light source are monitored. Then, the health of the solid-state light source is characterized based on an analysis of the monitored voltage and current.Type: GrantFiled: November 12, 2008Date of Patent: January 5, 2016Assignee: ORACLE AMERICA, INC.Inventors: David K. McElfresh, Dan Vacar, Leoncio D. Lopez, Kenny C. Gross
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Patent number: 8798944Abstract: A method for generating a service action for a computer system is described. During the method, a longevity index value for a packaging technology in the computer system is calculated using a longevity model and thermal and vibration telemetry data that is collected in the computer system. This longevity model may be based on accelerated failure testing of the packaging technology, field failures of the packaging technology in a group of computer systems that includes the computer system, and/or thermal and vibration telemetry data for the group of computer systems. Furthermore, using the longevity index value, the service action for the computer system is determined. Based on the longevity index value, remedial as action, e.g., repairs to the computer system, may be scheduled and performed.Type: GrantFiled: June 23, 2009Date of Patent: August 5, 2014Assignee: Oracle America, Inc.Inventors: Aleksey M. Urmanov, Anton A. Bougaev, David K. McElfresh, Leoncio D. Lopez
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Publication number: 20130138419Abstract: The disclosed embodiments provide a system that analyzes telemetry data from a computer system. During operation, the system obtains the telemetry data as a set of telemetric signals using a set of sensors in the computer system. Next, for each component or component location from a set of components in the computer system, the system applies an inferential model to the telemetry data to determine an operating environment of the component or component location, and uses the operating environment to assess a reliability of the component. Finally, the system manages use of the component in the computer system based on the assessed reliability.Type: ApplicationFiled: November 30, 2011Publication date: May 30, 2013Applicant: ORACLE INTERNATIONAL CORPORATIONInventors: Leoncio D. Lopez, Anton A. Bougaev, Kenny C. Gross, David K. McElfresh, Alan P. Wood
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Patent number: 8155765Abstract: One embodiment of the present invention provides a system that estimates the relative humidity inside a computer system. During operation, a set of performance parameters of the computer system and an external relative humidity outside of the computer system are monitored. Then, the relative humidity inside the computer system is estimated based on the set of performance parameters, the external relative humidity, and a relative humidity model, wherein training of the relative humidity model includes measuring an external training relative humidity outside of the computer system and a training relative humidity inside the computer system while monitoring the set of performance parameters of the computer system.Type: GrantFiled: May 2, 2008Date of Patent: April 10, 2012Assignee: Oracle America, Inc.Inventors: Leoncio D. Lopez, Kenny C. Gross, Kalyanaraman Vaidyanathan
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Patent number: 8140277Abstract: One embodiment provides a system that analyzes an electrical connection in a computer system. During operation, the system monitors a reflection coefficient associated with the electrical connection and applies a sequential-analysis technique to the reflection coefficient to determine a statistical deviation of the reflection coefficient. Next, the system assesses the integrity of the electrical connection based on the statistical deviation of the reflection coefficient. Finally, the system uses the assessed integrity to maintain the electrical connection.Type: GrantFiled: March 31, 2009Date of Patent: March 20, 2012Assignee: Oracle America, Inc.Inventors: David K. McElfresh, Kenny C. Gross, Leoncio D. Lopez, Dan Vacar
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Patent number: 7982468Abstract: A test system including a package with switchable paths. The package may have conductive paths that are selected by switches. The electrically switchable conductive paths may yield increased data without significantly increasing the required testing hardware.Type: GrantFiled: March 13, 2008Date of Patent: July 19, 2011Assignee: Oracle America, Inc.Inventors: Dan Vacar, David K. McElfresh, Robert H. Melanson, Leoncio D. Lopez
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Patent number: 7870440Abstract: A system that detects multiple anomalies in a cluster of components is presented. During operation, the system monitors derivatives obtained from one or more inferential variables which are received from sensors in the cluster of components. The system then determines whether one or more components within the cluster have experienced an anomalous event based on the monitored derivatives. If so, the system performs one or more remedial actions.Type: GrantFiled: March 14, 2008Date of Patent: January 11, 2011Assignee: Oracle America, Inc.Inventors: Dan Vacar, David K. McElfresh, Kenny C. Gross, Leoncio D. Lopez
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Publication number: 20100324882Abstract: A method for generating a service action for a computer system is described. During the method, a longevity index value for a packaging technology (such as solder joints in a BGA) in the computer system is calculated using thermal and vibration telemetry data (which is collected in the computer system) and a longevity model. This longevity model may be based on accelerated failure testing of the packaging technology, field failures of the packaging technology in a group of computer systems (which includes the computer system) and/or thermal and vibration telemetry data for the group of computer systems. Furthermore, using the longevity index value, the service action for the computer system is determined. Based on the longevity index value, remedial action (such as repairs to the computer system) may be scheduled and performed.Type: ApplicationFiled: June 23, 2009Publication date: December 23, 2010Applicant: SUN MICROSYSTEMS, INC.Inventors: Aleksey M. Urmanov, Anton A. Bougaev, David K. McElfresh, Leoncio D. Lopez
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Publication number: 20100250158Abstract: One embodiment provides a system that analyzes an electrical connection in a computer system. During operation, the system monitors a reflection coefficient associated with the electrical connection and applies a sequential-analysis technique to the reflection coefficient to determine a statistical deviation of the reflection coefficient. Next, the system assesses the integrity of the electrical connection based on the statistical deviation of the reflection coefficient. Finally, the system uses the assessed integrity to maintain the electrical connection.Type: ApplicationFiled: March 31, 2009Publication date: September 30, 2010Applicant: SUN MICROSYSTEMS, INC.Inventors: David K. McElfresh, Kenny C. Gross, Leoncio D. Lopez, Dan Vacar
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Patent number: 7800385Abstract: A test system including a package with interconnect paths. The package may have electrical paths that are electrically connected by the interconnect paths. The electrically connected electrical paths may yield increased data without significantly increasing the required testing hardware.Type: GrantFiled: March 13, 2008Date of Patent: September 21, 2010Assignee: Oracle America, Inc.Inventors: David K. McElfresh, Dan Vacar, Robert H. Melanson, Leoncio D. Lopez
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Publication number: 20100121593Abstract: Some embodiments of the present invention provide a system for in-situ characterization of a solid-state light. First, a voltage and a current of the solid-state light source are monitored. Then, the health of the solid-state light source is characterized based on an analysis of the monitored voltage and current.Type: ApplicationFiled: November 12, 2008Publication date: May 13, 2010Applicant: SUN MICROSYSTEMS, INC.Inventors: David K. McElfresh, Dan Vacar, Leoncio D. Lopez, Kenny C. Gross
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Patent number: 7680624Abstract: One embodiment of the present invention provides a system that performs a real-time root-cause-analysis for a degradation event associated with a component under test. During operation, the system monitors a telemetry signal collected from the component, and while doing so, attempts to detect an anomaly in the telemetry signal. If an anomaly is detected in the telemetry signal, the system performs a failure analysis on the telemetry signal in real-time while the telemetry signal is degrading. Next, the system identifies a failure mechanism for the component based on the failure analysis.Type: GrantFiled: April 16, 2007Date of Patent: March 16, 2010Assignee: Sun Microsystems, Inc.Inventors: David K. McElfresh, Dan Vacar, Kenny C. Gross, Leoncio D. Lopez
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Publication number: 20090326864Abstract: Some embodiments of the present invention provide a system that determines the reliability of an interconnect. During operation, connectors in the interconnect are categorized into a set of predetermined groups. Next, the reliability for selected groups in the set of predetermined groups is determined. Then, a reliability model for the interconnect is generated based on the selected groups and the reliability of the selected groups to determine the overall reliability of the interconnect.Type: ApplicationFiled: June 27, 2008Publication date: December 31, 2009Applicant: SUN MICROSYSTEMS, INC.Inventors: David K. McElfresh, Dan Vacar, Leoncio D. Lopez, Kenny C. Gross
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Publication number: 20090272176Abstract: One embodiment of the present invention provides a system that estimates the relative humidity inside a computer system. During operation, a set of performance parameters of the computer system and an external relative humidity outside of the computer system are monitored. Then, the relative humidity inside the computer system is estimated based on the set of performance parameters, the external relative humidity, and a relative humidity model, wherein training of the relative humidity model includes measuring an external training relative humidity outside of the computer system and a training relative humidity inside the computer system while monitoring the set of performance parameters of the computer system.Type: ApplicationFiled: May 2, 2008Publication date: November 5, 2009Applicant: SUN MICROSYSTEMS, INC.Inventors: Leoncio D. Lopez, Kenny C. Gross, Kalyanaraman Vaidyanathan
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Publication number: 20090230977Abstract: A test system including a package with switchable paths. The package may have conductive paths that are selected by switches. The electrically switchable conductive paths may yield increased data without significantly increasing the required testing hardware.Type: ApplicationFiled: March 13, 2008Publication date: September 17, 2009Applicant: Sun Microsystems, Inc.Inventors: Dan Vacar, David K. McElfresh, Robert H. Melanson, Leoncio D. Lopez
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Publication number: 20090234484Abstract: A system that detects multiple anomalies in a cluster of components is presented. During operation, the system monitors derivatives obtained from one or more inferential variables which are received from sensors in the cluster of components. The system then determines whether one or more components within the cluster have experienced an anomalous event based on the monitored derivatives. If so, the system performs one or more remedial actions.Type: ApplicationFiled: March 14, 2008Publication date: September 17, 2009Applicant: SUN MICROSYSTEMS, INC.Inventors: Dan Vacar, David K. McElfresh, Kenny C. Gross, Leoncio D. Lopez
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Publication number: 20090230976Abstract: A test system including a package with interconnect paths. The package may have electrical paths that are electrically connected by the interconnect paths. The electrically connected electrical paths may yield increased data without significantly increasing the required testing hardware.Type: ApplicationFiled: March 13, 2008Publication date: September 17, 2009Applicant: Sun Microsystems, Inc.Inventors: David K. McElfresh, Dan Vacar, Robert H. Melanson, Leoncio D. Lopez
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Patent number: 7466404Abstract: A method for testing a substrate by using a photoemission microscope is provided which includes providing the substrate and applying a reverse bias voltage to the substrate. The method further includes detecting light emissions from a top surface of the substrate and characterizing viability of the substrate from the detection of the light emissions.Type: GrantFiled: June 3, 2005Date of Patent: December 16, 2008Assignee: Sun Microsystems, Inc.Inventors: Dan Vacar, David K. McElfresh, Leoncio D. Lopez, Robert Melanson
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Publication number: 20080252441Abstract: One embodiment of the present invention provides a system that performs a real-time root-cause-analysis for a degradation event associated with a component under test. During operation, the system monitors a telemetry signal collected from the component, and while doing so, attempts to detect an anomaly in the telemetry signal. If an anomaly is detected in the telemetry signal, the system performs a failure analysis on the telemetry signal in real-time while the telemetry signal is degrading. Next, the system identifies a failure mechanism for the component based on the failure analysis.Type: ApplicationFiled: April 16, 2007Publication date: October 16, 2008Inventors: David K. McElfresh, Dan Vacar, Kenny C. Gross, Leoncio D. Lopez
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Patent number: 7353431Abstract: A system that detects the onset of degradation for interconnections in a component within a computer system. During operation, the system monitors inferential variables associated with the interconnections during operation of the computer system. Next, the system determines a present state of the component from the monitored inferential variables. The system then compares the present state of the component with an initial state of the component. If the comparison indicates that the interconnections in the component have reached or will reach a limited operating state (LOS), the system performs a remedial action.Type: GrantFiled: August 21, 2006Date of Patent: April 1, 2008Assignee: Sun Microsystems, Inc.Inventors: Leoncio D. Lopez, David K. McElfresh, Dan Vacar, Kenny C. Gross