Patents by Inventor Bidyut K. Sen
Bidyut K. Sen 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: 8898365Abstract: A chip package includes a micro-link between components disposed on a substrate. The micro-link may be an ultra-short multi-conductor transmission line with shared reference planes that results in a distribution of impedance values. Furthermore, the composite signal traces in the transmission line each can support communication of one symbol at a time by ensuring that multiple reflections reach a substantial fraction of a steady-state value within a symbol time. In this way, the micro-link may facilitate continued scaling of the communication bandwidth between the components with low latency to increase the performance of computer systems that include the chip package.Type: GrantFiled: March 22, 2012Date of Patent: November 25, 2014Assignee: Oracle International CorporationInventors: Robert P. Masleid, Sreemala Pannala, Michael L. Cooper, Bidyut K. Sen
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Publication number: 20130254448Abstract: A chip package includes a micro-link between components disposed on a substrate. The micro-link may be an ultra-short multi-conductor transmission line with shared reference planes that results in a distribution of impedance values. Furthermore, the composite signal traces in the transmission line each can support communication of one symbol at a time by ensuring that multiple reflections reach a substantial fraction of a steady-state value within a symbol time. In this way, the micro-link may facilitate continued scaling of the communication bandwidth between the components with low latency to increase the performance of computer systems that include the chip package.Type: ApplicationFiled: March 22, 2012Publication date: September 26, 2013Applicant: ORACLE INTERNATIONAL CORPORATIONInventors: Robert P. Masleid, Sreemala Pannala, Michael L. Cooper, Bidyut K. Sen
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Patent number: 8116097Abstract: An apparatus for coupling an integrated circuit (IC) package to a printed circuit board. The apparatus includes an interposer an interposer having a plurality of connections suitable for surface mounting on corresponding pads of a printed circuit board (PCB). The plurality of connections is arranged in a grid array. The interposer further includes a plurality of plated through holes. The apparatus further includes a substrate having a plurality of pins. The substrate is coupled to the interposer by inserting each of the plurality of pins into a corresponding one of the plurality of plated through holes of the interposer. An IC package including an IC is mounted on the substrate.Type: GrantFiled: November 2, 2007Date of Patent: February 14, 2012Assignee: Oracle America, Inc.Inventors: David G. Love, Bidyut K. Sen
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Publication number: 20090113698Abstract: An apparatus for coupling an integrated circuit (IC) package to a printed circuit board. The apparatus includes an interposer an interposer having a plurality of connections suitable for surface mounting on corresponding pads of a printed circuit board (PCB). The plurality of connections is arranged in a grid array. The interposer further includes a plurality of plated through holes. The apparatus further includes a substrate having a plurality of pins. The substrate is coupled to the interposer by inserting each of the plurality of pins into a corresponding one of the plurality of plated through holes of the interposer. An IC package including an IC is mounted on the substrate.Type: ApplicationFiled: November 2, 2007Publication date: May 7, 2009Inventors: David G. Love, Bidyut K. Sen
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Patent number: 7007741Abstract: A heat spreader apparatus for cooling an electronic component and method of attachment. The heat spreader comprises a flexible wall that partially conforms to a non-matching mating surface of the component when pressure is applied to the surface of the flexible wall that is opposite the component. The pressure may be maintained against the flexible wall during use, or released once the flexible wall is maintained in its conforming location by an adhesive.Type: GrantFiled: October 18, 2002Date of Patent: March 7, 2006Assignee: Sun Microsystems, Inc.Inventors: Bidyut K. Sen, Scott Kirkman, Vadim Gektin
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Patent number: 6956285Abstract: An integrated circuit package includes EMI containment features. The EMI containment features may include a plurality of pins on a substrate of the integrated circuit package. The pins may be a peripheral row of pins in an array of pins. The pins may couple a lid of the package to at least one ground plane of a circuit board.Type: GrantFiled: January 15, 2003Date of Patent: October 18, 2005Assignee: Sun Microsystems, Inc.Inventors: Sergiu Radu, Bidyut K. Sen, David Hockanson, John E. Will
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Patent number: 6925616Abstract: A method for testing a core power distribution system for an integrated circuit chip which includes arranging a plurality of experiments for an integrated circuit chip, performing the plurality of experiments for the integrated circuit chip over a range of frequencies over a range of power distribution system impedances, generating a schmoo diagram for each of the plurality of experiments, and analyzing the schmoo diagrams to determine whether the core power distribution system functions is acceptable at a particular frequency.Type: GrantFiled: October 4, 2002Date of Patent: August 2, 2005Assignee: Sun Microsystems, Inc.Inventors: Leesa Noujeim, Bidyut K. Sen
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Publication number: 20040135238Abstract: An integrated circuit package includes EMI containment features. The EMI containment features may include a plurality of pins on a substrate of the integrated circuit package. The pins may be a peripheral row of pins in an array of pins. The pins may couple a lid of the package to at least one ground plane of a circuit board.Type: ApplicationFiled: January 15, 2003Publication date: July 15, 2004Inventors: Sergiu Radu, Bidyut K. Sen, David Hockanson, John E. Will
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Patent number: 6754616Abstract: A method of simulating the electrical behavior of an ideal transformer. The representation of the ideal transformer is frequency independent and can be used to simulate the behavior of an ideal transformer over the frequency range from DC to infinity. In one embodiment, the ideal transformer is represented as having an input sub-circuit and an output sub-circuit. Each sub-circuit includes a resistor connected in parallel across a current controlled current source. The input current, output current, current sources, and resistances are scaled by a scaling factor representing the turns ratio between the primary and secondary windings of a physical transformer. In the present invention, the current sources are responsible for the current scaling and the resistors are responsible for the impedance scaling. The circuit elements of the representation may be used as the basis for generating a set of input parameters for a circuit emulation program.Type: GrantFiled: January 31, 2000Date of Patent: June 22, 2004Assignee: Fujitsu LimitedInventors: Bidyut K. Sen, James C. Parker, Richard L. Wheeler
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Publication number: 20040074630Abstract: A heat spreader apparatus for cooling an electronic component and method of attachment. The heat spreader comprises a flexible wall that partially conforms to a non-matching mating surface of the component when pressure is applied to the surface of the flexible wall that is opposite the component. The pressure may be maintained against the flexible wall during use, or released once the flexible wall is maintained in its conforming location by an adhesive.Type: ApplicationFiled: October 18, 2002Publication date: April 22, 2004Inventors: Bidyut K. Sen, Scott Kirkman, Vadim Gektin
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Publication number: 20040068700Abstract: A method for testing a core power distribution system for an integrated circuit chip which includes arranging a plurality of experiments for an integrated circuit chip, performing the plurality of experiments for the integrated circuit chip over a range of frequencies over a range of power distribution system impedances, generating a schmoo diagram for each of the plurality of experiments, and analyzing the schmoo diagrams to determine whether how the core power distribution system functions at a particular frequency is acceptable.Type: ApplicationFiled: October 4, 2002Publication date: April 8, 2004Inventors: Leesa Noujeim, Bidyut K. Sen
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Publication number: 20030107116Abstract: A capacitor having an aperture in a central portion of the capacitor is provided. Such a “windowframe” capacitor has capacitive material disposed within a housing of the capacitor in order to provide effective capacitance and reduced inductance. Further, a semiconductor package assembly having a semiconductor die and a windowframe capacitor is provided.Type: ApplicationFiled: December 7, 2001Publication date: June 12, 2003Inventor: Bidyut K. Sen
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Patent number: 5817533Abstract: Described are methods of manufacturing large substrate capacitors for multi-chip module applications and the like using procedures compatible with common semiconductor fabrication procedures. A capacitor is formed where the top electrode thereof is divided into a plurality of segmented pads which are initially electrically isolated from one another. Each segmented pad forms a capacitor with the underlying dielectric layer and bottom capacitor electrode. Each segmented capacitor is electrically tested, and defective ones are identified. A conductive layer is thereafter formed over the segmented pads such that the conductive layer is electrically isolated from the pads of defective capacitors. The conductive layer electrically couples the good capacitors in parallel to form a high-value bypass capacitor which has low parasitic inductance. Large embedded MCM bypass capacitors can thereby be fabricated with minimal impact to the overall manufacturing yield.Type: GrantFiled: July 29, 1996Date of Patent: October 6, 1998Assignee: Fujitsu LimitedInventors: Bidyut K. Sen, Michael G. Peters, Richard L. Wheeler, Wen-chou Vincent Wang
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Patent number: 5414222Abstract: An improved multilayer integrated circuit package. The package, which has a plurality of layers of conducting leads, has metal vias which connects leads in a first layer connected to leads in a second layer. The improvement comprises having at least on of the vias with a cross-section such that the via is much larger in a first direction than in a second direction generally perpendicular to the first direction.Type: GrantFiled: August 17, 1993Date of Patent: May 9, 1995Assignee: LSI Logic CorporationInventors: Bidyut K. Sen, Eric S. Tosaya
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Patent number: 5304743Abstract: An improved multilayer integrated circuit package. The package, which has a plurality of layers of conducting leads, has metal vias which connects leads in a first layer connected to leads in a second layer. The improvement comprises having at least one of the vias with a cross-section such that the via is much larger in a first direction than in a second direction generally perpendicular to said first direction.Type: GrantFiled: May 12, 1992Date of Patent: April 19, 1994Assignee: LSI Logic CorporationInventors: Bidyut K. Sen, Eric S. Tosaya