Patents by Inventor Majid Sarrafzadeh
Majid Sarrafzadeh 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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Publication number: 20120323501Abstract: A fabric-based pressure sensor array includes: (1) a first layer including M elongated conductive strips coated thereon; (2) a second layer including N elongated conductive strips coated thereon, the M elongated conductive strips extending crosswise relative to the N elongated conductive strips to define M×N intersections; and (3) a unitary textile sheet extending between the first layer and the second layer so as to overlap the M×N intersections, the textile sheet having a variable resistivity in response to applied pressure so as to define M×N pressure sensors at locations corresponding to the M×N intersections.Type: ApplicationFiled: May 18, 2012Publication date: December 20, 2012Inventors: Majid Sarrafzadeh, Wenyao Xu, Ming-Chun Huang, Nitin Raut, Behrooz Yadegar
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Publication number: 20120277637Abstract: A supported body, like the body of a bedridden patient, is monitored by a plurality of pressure sensors located between the body and support surface during an extended period of time. Pressure areas on the body are determined in real time for predetermined time periods during periods of movement between the body and the support surface. Common pressure areas on the body during different body positions on the support surface are determined for predetermined time periods. The pressure areas that exceed a predetermined pressure level for a predetermined time period trigger an alarm indicator and identification of the pressure areas of concern.Type: ApplicationFiled: November 17, 2010Publication date: November 1, 2012Inventors: Alireza Vahdatpour, Majid Sarrafzadeh
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Publication number: 20120221310Abstract: A signal representing a physiological state of a patient is sampled to obtain a time lagged dataset that represents a segment of the signal. A spectral analysis of the dataset is conducted to obtain a corresponding frequency domain dataset, followed by a multiple regression analysis using the frequency domain set as one variable and a signal representative of a medical event as the other variable. The result of the multiple regression analysis is used to create a model for predicting the medical event.Type: ApplicationFiled: February 28, 2012Publication date: August 30, 2012Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Majid Sarrafzadeh, Jamie Macbeth
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Publication number: 20120190989Abstract: Systems and methods are disclosed that use wireless coupling of energy for operation of both external and internal devices, including external sensor arrays and implantable devices. The signals conveyed may be electronic, optical, acoustic, biomechanical, and others to provide in situ sensing and monitoring of internal anatomies and implants using a wireless, biocompatible electromagnetic powered sensor systems.Type: ApplicationFiled: January 26, 2012Publication date: July 26, 2012Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: William J. Kaiser, Majid Sarrafzadeh, Denise Aberle, Maxim Batalin, Alireza Mehrnia, Ani Nahapetian, James Sayre
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Publication number: 20120092169Abstract: A method for determining the motive instability of an individual using foot pressure, foot speed and foot direction data collected from sensors on shoes. The sensed data is used to determine the minimum number and the placement of pressure sensors in the shoe. The data from the sensors is processed to extract spatial and temporal parameters as desired. The data is grouped into segments based on a segmentation rule. The trend in each segment is determined. The variability of the trend in each segment is determined. The risk of fall is computed on the basis of the trend and variance. The computation is adjustable by emphasizing certain parameters in order to tailor the instability assessment to a specific individual.Type: ApplicationFiled: June 29, 2010Publication date: April 19, 2012Applicant: The Regents of the University of CaliforniaInventors: William J. Kaiser, Majid Sarrafzadeh, Hyduke Noshadi, Shaun S. Ahmadian, Hagop Hagopian, Navid Amini, Mars Lan, Jonathan S. Woodbridge, Wenyao Xu
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Publication number: 20110061697Abstract: A computer readable storage medium includes executable instructions to receive sensor data measurements associated with usage of a mobility aid device and extract sensor feature parameters from the sensor data measurements. The computer readable storage medium further includes executable instructions to derive a usage state corresponding to the usage of the mobility aid device, based on the sensor feature parameters.Type: ApplicationFiled: March 3, 2009Publication date: March 17, 2011Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Christian Behrenbruch, William Kaiser, Majid Sarrafzadeh, Maxim Batalin
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Patent number: 7726206Abstract: This invention relates to a system that continuously monitors pressure and force on the foot, analyzes and visualizes the pressure and force exerted on said foot in real-time. The invention measures pressure and force applied to a plurality of sensors placed in various points of an orthotic, shoe, shoe lining, insert, sock or sock type device. If the sensors detect pressure or force, the sensors send a signal to a microcomputer processor located in the shoe that subsequently analyzes and sends the data wireless to either a handheld electronic device, a personal computer, an electronic data capture system or a software program. The handheld electronic device or the personal computer then displays the data to an operator of the device or computer instantaneously; while the data capture system or program forwards the information to a handheld device and/or personal computer.Type: GrantFiled: November 1, 2007Date of Patent: June 1, 2010Assignees: The Regents of The University of California, Medisens Wireless, Inc.Inventors: Nicholas A. Terrafranca, Jr., Majid Sarrafzadeh, Eric Collins, Foad Dabiri, Hyduke Noshadi, Tammara Massey
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Publication number: 20100113979Abstract: The present invention relates to methods and apparatus for quantitative assessment of neuromotor disorders using sensors and analyzing the data collected from the sensors to determine if a patient suffers any neuromotor disorders. In one embodiment, the present invention is a system for assessing neuromotor disorders in a body including a plurality of pressure sensors adapted for attachment to the body and measuring pressure, a med node connected to the plurality of pressure sensors for generating data corresponding to the plurality of pressure sensors, and an analysis unit connected to the med node for analyzing the data generated by the med node to determine the existence of a nueromotor disorder in the body.Type: ApplicationFiled: March 7, 2008Publication date: May 6, 2010Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Majid Sarrafzadeh, Roozbeh Jafari, Victor R. Edgerton, Devin L. Jindrich, Foad Dabiri
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Publication number: 20080287832Abstract: This invention relates to a system that continuously monitors pressure and force on the foot, analyzes and visualizes the pressure and force exerted on said foot in real-time. The invention measures pressure and force applied to a plurality of sensors placed in various points of an orthotic, shoe, shoe lining, insert, sock or sock type device. If the sensors detect pressure or force, the sensors send a signal to a microcomputer processor located in the shoe that subsequently analyzes and sends the data wireless to either a handheld electronic device, a personal computer, an electronic data capture system or a software program. The handheld electronic device or the personal computer then displays the data to an operator of the device or computer instantaneously; while the data capture system or program forwards the information to a handheld device and/or personal computer.Type: ApplicationFiled: November 1, 2007Publication date: November 20, 2008Inventors: Eric Collins, Majid Sarrafzadeh, Nicholas A. Terrafranca, JR., Foad Dabiri, Hyduke Noshadi, Tammara Massey
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Patent number: 6961916Abstract: The present invention, generally speaking, provides a placement method for the physical design of integrated circuits in which natural topological feature clusters (topo-clusters) are discovered and exploited during the placement process. Topo-clusters may be formed based on various criteria including, for example, functional similarity, proximity (in terms of number of nets), and genus. Genus refers to a representation of a netlist in terms of a number of planar netlists—netlists in which no crossing of nets occurs. Topo-clusters drive initial placement, with all of the gates of a topo-cluster being placed initially in a single bin of the placement layout or within a group of positionally-related bins. The portion of a topo-cluster placed within a given bin is called a quanto-cluster. An iterative placement refinement process then follows, using a technique referred to herein as Geometrically-Bounded FM (GBFM), and in particular Dual GBFM.Type: GrantFiled: May 1, 2002Date of Patent: November 1, 2005Assignee: Synopsys, Inc.Inventors: Majid Sarrafzadeh, Lawrence Pileggi, Sharad Malik, Feroze Peshotan Taraporevala, Abhijeet Chakraborty, Gary K. Yeap, Salil R. Raje, Lilly Shieh, Douglas B. Boyle, Dennis Yamamoto
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Patent number: 6851099Abstract: The present invention, generally speaking, provides a placement method for the physical design of integrated circuits in which natural topological feature clusters (topo-clusters) are discovered and exploited during the placement process. Initial placement and placement refinement may be performed hierarchically using topocluster trees. A topocluster tree may be used to drive initial placement. An iterative placement refinement process then follows, using a technique referred to herein as Geometrically-Bounded FM (GBFM). In GBFM, FM is applied on a local basis to windows encompassing some number of bins. From iteration to iteration, windows may shift position and vary in size. When a region bounded by a window meets a specified cost threshold in terms of a specified cost function, that region does not participate. The cost function takes account of actual physical metrics-delay, area, congestion, power, etc.Type: GrantFiled: February 23, 2000Date of Patent: February 1, 2005Assignee: Synopsys, Inc.Inventors: Majid Sarrafzadeh, Salil R. Raje
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Patent number: 6651232Abstract: Progressively optimized clock tree/mesh construction is performed concurrently with placement of all remaining objects. Clock tree/mesh is specified loosely for initial placement, then followed by progressive detailed placement. In particular, preferred approach provides automated and reliable solution to clock tree/mesh construction, occuring concurrently with placement process so that clock tree wiring and buffering considers and influences placement and wiring of all other objects, such as logic gates, memory elements, macrocells, etc. Hence, in this concurrent manner, clock tree/mesh pre-wiring and pre-buffering may be based on construction of approximate clock tree using partitioning information only, i.e., prior to object placement. Further, present approach provides modified DME-based clock tree topology construction without meandering, and recursive algorithm for buffered clock tree construction.Type: GrantFiled: November 5, 1998Date of Patent: November 18, 2003Assignee: Monterey Design Systems, Inc.Inventors: Lawrence Pileggi, Christopher Dunn, Satyamurthy Pullela, Majid Sarrafzadeh, Tong Gao, Salil Raje
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Publication number: 20020138816Abstract: The present invention, generally speaking, provides a placement method for the physical design of integrated circuits in which natural topological feature clusters (topo-clusters) are discovered and exploited during the placement process. Topo-clusters may be formed based on various criteria including, for example, functional similarity, proximity (in terms of number of nets), and genus. Genus refers to a representation of a netlist in terms of a number of planar netlists—netlists in which no crossing of nets occurs. Topo-clusters drive initial placement, with all of the gates of a topo-cluster being placed initially in a single bin of the placement layout or within a group of positionally-related bins. The portion of a topo-cluster placed within a given bin is called a quanto-cluster. An iterative placement refinement process then follows, using a technique referred to herein as Geometrically-Bounded FM (GBFM), and in particular Dual GBFM.Type: ApplicationFiled: May 1, 2002Publication date: September 26, 2002Inventors: Majid Sarrafzadeh, Lawrence Pileggi, Sharad Malik, Feroze Peshotan Taraporevala, Abhijeet Chakraborty, Gary K. Yeap, Salil R. Raje, Lilly Shieh, Douglas B. Boyle, Dennis Yamamoto
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Patent number: 6442743Abstract: The disclosure describes a placement method for the physical design of integrated circuits in which natural topological feature clusters are discovered and exploited during the placement process is disclosed. Topo-clusters drive initial placement, with all of the gates of a topo-cluster being placed initially in a single bin of the placement layout or within a group of positionally-related bins. An iterative placement refinement process is done using a technique referred to as Dual Geometrically-Bounded FM (GBFM). GBFM is applied on a local basis to windows encompassing a number of bins. From iteration to iteration, windows may shift position and vary in size. When a region bounded by a window meets a specified cost threshold in terms of a specified cost function, that region stops participating. Following the foregoing global placement process the circuit is then ready for detailed placement in which cells are assigned to placement rows.Type: GrantFiled: June 12, 1998Date of Patent: August 27, 2002Assignee: Monterey Design SystemsInventors: Majid Sarrafzadeh, Lawrence Pileggi, Sharad Malik, Feroze Peshotan Taraporevala, Abhijeet Chakraborty, Gary K. Yeap, Salil R. Raje, Lilly Shieh, Douglas B. Boyle, Dennis Yamamoto
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Patent number: 6385760Abstract: A design tool for integrated circuits includes a placement tool which places logic gates and interconnect components concurrently. Probabilistic interconnect models are used to represent the collection of possible interconnect routings that provide acceptable circuit performance and routing area.Type: GrantFiled: June 12, 1998Date of Patent: May 7, 2002Assignee: Monterey Design Systems, Inc.Inventors: Lawrence Pileggi, Majid Sarrafzadeh, Gary K. Yeap, Feroze Peshotan Taraporevala, Tong Gao, Douglas B. Boyle
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Publication number: 20010047507Abstract: A design tool for integrated circuits includes a placement tool which places logic gates and interconnect components concurrently. Probabilistic interconnect models are used to represent the collection of possible interconnect routings that provide acceptable circuit performance and routing area.Type: ApplicationFiled: June 12, 1998Publication date: November 29, 2001Inventors: LAWRENCE PILEGGI, MAJID SARRAFZADEH, GARY K. YEAP, FEROZE PESHOTAN TARAPOREVALA, TONG GAO, DOUGLAS B. BOYLE
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Patent number: 6286128Abstract: A method for design optimization using logical and physical information is provided. In one embodiment, a method for design optimization using logical and physical information, includes receiving a behavioral description of an integrated circuit or a portion of an integrated circuit, optimizing placement of circuit elements in accordance with a first cost function, and optimizing logic of the circuit elements in accordance with a second cost function, in which the optimizing placement of the circuit elements and the optimizing logic of the circuit elements are performed concurrently. The method can further include optimizing routing in accordance with a third cost function, in which the optimizing routing, the optimizing placement of the circuit elements, and the optimizing logic of the circuit elements are performed concurrently.Type: GrantFiled: June 12, 1998Date of Patent: September 4, 2001Assignee: Monterey Design Systems, Inc.Inventors: Lawrence Pileggi, Majid Sarrafzadeh, Sharad Malik, Abhijeet Chakraborty, Archie Li, Robert Eugene Shortt, Christopher Dunn, David Gluss, Dennis Yamamoto, Dinesh Gaitonde, Douglas B. Boyle, Emre Tuncer, Eric McCaughrin, Feroze Peshotan Taraporevala, Gary K. Yeap, James S. Koford, Joseph T. Rahmeh, Lilly Shieh, Salil R. Raje, Sam Jung Kim, Satamurthy Pullela, Yau-Tsun Steven Li, Tong Gao