Patents by Inventor Douglas Wallace
Douglas Wallace 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: 12532415Abstract: A high-speed transmission circuit comprises, as part of a signal path, a connector pin disposed on a pad that comprises an unused pad region. The unused pad region is not considered part of the signal path but is part of a resonant sub-circuit. In various embodiments, by properly adjusting the dimensions of the pad region and other structures in the high-speed transmission circuit, resonant frequencies of the sub-circuit are shifted to a frequency range that is outside of the frequency range of interest in the signal path, thereby, reducing insertion loss and increasing signal integrity without compromising mechanical stability.Type: GrantFiled: January 22, 2024Date of Patent: January 20, 2026Assignee: DELL PRODUCTS L.P.Inventors: Umesh Chandra, Douglas Wallace, Bhyrav Mutnury
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Publication number: 20240164018Abstract: A high-speed transmission circuit comprises, as part of a signal path, a connector pin disposed on a pad that comprises an unused pad region. The unused pad region is not considered part of the signal path but is part of a resonant sub-circuit. In various embodiments, by properly adjusting the dimensions of the pad region and other structures in the high-speed transmission circuit, resonant frequencies of the sub-circuit are shifted to a frequency range that is outside of the frequency range of interest in the signal path, thereby, reducing insertion loss and increasing signal integrity without compromising mechanical stability.Type: ApplicationFiled: January 22, 2024Publication date: May 16, 2024Applicant: DELL PRODUCTS L.P.Inventors: Umesh CHANDRA, Douglas WALLACE, Bhyrav MUTNURY
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Patent number: 11882655Abstract: A high-speed transmission circuit comprises, as part of a signal path, a connector pin disposed on a pad that comprises an unused pad region. The unused pad region is not considered part of the signal path but is part of a resonant sub-circuit. In various embodiments, by properly adjusting the dimensions of the pad region and other structures in the high-speed transmission circuit, resonant frequencies of the sub-circuit are shifted to a frequency range that is outside of the frequency range of interest in the signal path, thereby, reducing insertion loss and increasing signal integrity without compromising mechanical stability.Type: GrantFiled: May 29, 2020Date of Patent: January 23, 2024Assignee: DELL PRODUCTS L.P.Inventors: Umesh Chandra, Douglas Wallace, Bhyrav Mutnury
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Patent number: 11831477Abstract: An information handling system includes a first component including a transmitter for a high-speed serial data interface, and a second component including a receiver for the high-speed serial data interface. The receiver includes an equalization stage and a decision feedback equalization (DFE) stage. The equalization stage has an input to configure the equalization stage in one of a first low equalization state and a first high equalization state. The DFE stage has a plurality of tap inputs. The first component provides a plurality of training runs on the high-speed serial data interface.Type: GrantFiled: April 4, 2022Date of Patent: November 28, 2023Assignee: Dell Products L.P.Inventors: Vijender Kumar, Douglas Wallace, Bhyrav Mutnury, Sukumar Muthusamy
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Publication number: 20230318886Abstract: An information handling system includes a first component including a transmitter for a high-speed serial data interface, and a second component including a receiver for the high-speed serial data interface. The receiver includes an equalization stage and a decision feedback equalization (DFE) stage. The equalization stage has an input to configure the equalization stage in one of a first low equalization state and a first high equalization state. The DFE stage has a plurality of tap inputs. The first component provides a plurality of training runs on the high-speed serial data interface.Type: ApplicationFiled: April 4, 2022Publication date: October 5, 2023Inventors: Vijender Kumar, Douglas Wallace, Bhyrav Mutnury, Sukumar Muthusamy
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Publication number: 20210378094Abstract: A high-speed transmission circuit comprises, as part of a signal path, a connector pin disposed on a pad that comprises an unused pad region. The unused pad region is not considered part of the signal path but is part of a resonant sub-circuit. In various embodiments, by properly adjusting the dimensions of the pad region and other structures in the high-speed transmission circuit, resonant frequencies of the sub-circuit are shifted to a frequency range that is outside of the frequency range of interest in the signal path, thereby, reducing insertion loss and increasing signal integrity without compromising mechanical stability.Type: ApplicationFiled: May 29, 2020Publication date: December 2, 2021Applicant: DELL PRODUCTS L.P.Inventors: Umesh CHANDRA, Douglas WALLACE, Bhyrav MUTNURY
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Patent number: 8895312Abstract: A microfluidic device for mitochondria analysis includes an inlet coupled to a first access channel, an outlet coupled to a second access channel, and a plurality of trapping channels fluidically coupled at one end to the first access channel and fluidically coupled at an opposing end to the second access channel, each trapping channel has a cross-sectional dimension about 2 ?m in one direction and a cross-sectional dimension between about 0.45 and about 0.75 ?m in a second direction.Type: GrantFiled: August 9, 2013Date of Patent: November 25, 2014Assignee: The Regents of the University of CaliforniaInventors: Peter Burke, Katayoun Zand, Ted Pham, Antonio Davila, Douglas Wallace
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Publication number: 20140051174Abstract: A microfluidic device for mitochondria analysis includes an inlet coupled to a first access channel, an outlet coupled to a second access channel, and a plurality of trapping channels fluidically coupled at one end to the first access channel and fluidically coupled at an opposing end to the second access channel, each trapping channel comprises a cross-sectional dimension about 2 ?m in one direction and a cross-sectional dimension between about 0.45 and about 0.75 ?m in a second direction.Type: ApplicationFiled: August 9, 2013Publication date: February 20, 2014Inventors: Peter Burke, Katayoun Zand, Ted Pham, Antonio Davila, Douglas Wallace
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Publication number: 20060099578Abstract: This invention provides a library of genes involved in mitochondrial biology, arrays containing probes for genes involved in mitochondrial biology, methods for making such arrays, and methods of using such arrays. Genes and probe sequences involved in mitochondrial biology in humans and mice are provided. The arrays of this invention are useful for determining mitochondrial biology gene expression profiles. Mitochondrial biology gene expression profiles are useful for determining expression profiles diagnostic of physiological conditions; diagnosing physiological conditions; identifying biochemical pathways, genes, and mutations involved in physiological conditions; identify therapeutic agents useful for preventing and/or treating such physiological conditions; evaluating and/or monitoring the efficacy of such therapies, and creating and identifying animal models of human physiologic conditions.Type: ApplicationFiled: August 30, 2002Publication date: May 11, 2006Inventors: Douglas Wallace, Shawn Levy, Keith Kerstann, Vincent Procaccio
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Publication number: 20050123913Abstract: This invention provides human mtDNA polymorphisms that are diagnostic of all the major human haplogroups and methods of diagnosing those haplogroups and selected subhaplogroups. This invention also provides methods for identifying evolutionarily significant mitochondrial DNA genes, nucleotide alleles, and amino acid alleles. Evolutionarily significant genes and alleles are identified using one or two populations of a single species. The process of identifying evolutionarily significant nucleotide alleles involves identifying evolutionarily significant genes and then evolutionarily significant nucleotide alleles in those genes, and identifying evolutionarily significant amino acid alleles involves identifying amino acids encoded by all nonsynonymous alleles. Synonymous codings of the nucleotide alleles encoding evolutionarily significant amino acid alleles of this invention are equivalent to the evolutionarily significant amino acid alleles disclosed herein and are included within the scope of this invention.Type: ApplicationFiled: August 30, 2002Publication date: June 9, 2005Applicant: Emory UniversityInventors: Douglas Wallace, Seyed Hosseini, Dan Mishmar, Eduardo Ruiz-Pesini, Marie Lott
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Publication number: 20050091704Abstract: Described are methods for inactivating adenine nucleotide transporter proteins in specific tissues of a transgenic nonhuman animal using a conditional knockin/knockout technology such as the Cre-LoxP, Flip-FLP recombinase, or Tet-on/off technologies. Specifically, the Ant2 gene is functionally inactivated in a mouse in liver, with or without the concurrent inactivation of the Ant1 gene. The result is an animal in which the Ant2 gene and accompanying ANT2 protein is absent in one or more tissues, either in the presence or absence of the Ant1 gene and accompanying ANT1 protein. The resulting animals, cells, mitochondria, and subcelluar fractions such as the mitochondrial permeability transition pore can then be used to identify agents that affect animal and/or subcellular function via a direct or indirect interaction with the ANT2 protein and/or its Ant2 gene.Type: ApplicationFiled: September 2, 2003Publication date: April 28, 2005Applicant: Emory UniversityInventors: Douglas Wallace, Grant MacGregor, Katrina Waymire, Shawn Levy, James Sligh, Jason Kokoszka
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Patent number: 6688889Abstract: A computerized test preparation system and methods are disclosed which assist an examinee to increase his learning and improve his performance on standardized academic or applied aptitude and achievement exams. Performance feedback information is provided to a user, including conventional information such as number of items correct and time elapsed, pinpoints substantive areas of a particular exam in which the user is either weak or strong, and offers diagnoses of, and remediation tailored to, a user's personal difficulties. By assessing a user's responses to given exam questions, through various distractor error patterns manifested in the incorrect answers to multiple-choice questions, or through coded categories of responses in the case of user responses to constrained open-ended items, a preliminary diagnosis of a user's deficits in knowledge and/or test taking skill is made. This preliminary diagnosis is subsequently refined utilizing additional examination questions.Type: GrantFiled: March 8, 2001Date of Patent: February 10, 2004Assignee: Boostmyscore.comInventors: Douglas Wallace, Michael Flaherty, John Flaherty, Todd Huss, Susan Detwiler, David Roy