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).

  • Publication number: 20120323501
    Abstract: 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: Application
    Filed: May 18, 2012
    Publication date: December 20, 2012
    Inventors: Majid Sarrafzadeh, Wenyao Xu, Ming-Chun Huang, Nitin Raut, Behrooz Yadegar
  • Publication number: 20120277637
    Abstract: 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: Application
    Filed: November 17, 2010
    Publication date: November 1, 2012
    Inventors: Alireza Vahdatpour, Majid Sarrafzadeh
  • Publication number: 20120221310
    Abstract: 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: Application
    Filed: February 28, 2012
    Publication date: August 30, 2012
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Majid Sarrafzadeh, Jamie Macbeth
  • Publication number: 20120190989
    Abstract: 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: Application
    Filed: January 26, 2012
    Publication date: July 26, 2012
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: William J. Kaiser, Majid Sarrafzadeh, Denise Aberle, Maxim Batalin, Alireza Mehrnia, Ani Nahapetian, James Sayre
  • Publication number: 20120092169
    Abstract: 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: Application
    Filed: June 29, 2010
    Publication date: April 19, 2012
    Applicant: The Regents of the University of California
    Inventors: William J. Kaiser, Majid Sarrafzadeh, Hyduke Noshadi, Shaun S. Ahmadian, Hagop Hagopian, Navid Amini, Mars Lan, Jonathan S. Woodbridge, Wenyao Xu
  • Publication number: 20110061697
    Abstract: 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: Application
    Filed: March 3, 2009
    Publication date: March 17, 2011
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Christian Behrenbruch, William Kaiser, Majid Sarrafzadeh, Maxim Batalin
  • Patent number: 7726206
    Abstract: 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: Grant
    Filed: November 1, 2007
    Date of Patent: June 1, 2010
    Assignees: 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
  • Publication number: 20100113979
    Abstract: 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: Application
    Filed: March 7, 2008
    Publication date: May 6, 2010
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Majid Sarrafzadeh, Roozbeh Jafari, Victor R. Edgerton, Devin L. Jindrich, Foad Dabiri
  • Publication number: 20080287832
    Abstract: 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: Application
    Filed: November 1, 2007
    Publication date: November 20, 2008
    Inventors: Eric Collins, Majid Sarrafzadeh, Nicholas A. Terrafranca, JR., Foad Dabiri, Hyduke Noshadi, Tammara Massey
  • Patent number: 6961916
    Abstract: 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: Grant
    Filed: May 1, 2002
    Date of Patent: November 1, 2005
    Assignee: 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
  • Patent number: 6851099
    Abstract: 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: Grant
    Filed: February 23, 2000
    Date of Patent: February 1, 2005
    Assignee: Synopsys, Inc.
    Inventors: Majid Sarrafzadeh, Salil R. Raje
  • Patent number: 6651232
    Abstract: 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: Grant
    Filed: November 5, 1998
    Date of Patent: November 18, 2003
    Assignee: Monterey Design Systems, Inc.
    Inventors: Lawrence Pileggi, Christopher Dunn, Satyamurthy Pullela, Majid Sarrafzadeh, Tong Gao, Salil Raje
  • Publication number: 20020138816
    Abstract: 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: Application
    Filed: May 1, 2002
    Publication date: September 26, 2002
    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
  • Patent number: 6442743
    Abstract: 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: Grant
    Filed: June 12, 1998
    Date of Patent: August 27, 2002
    Assignee: Monterey Design Systems
    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
  • Patent number: 6385760
    Abstract: 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: Grant
    Filed: June 12, 1998
    Date of Patent: May 7, 2002
    Assignee: Monterey Design Systems, Inc.
    Inventors: Lawrence Pileggi, Majid Sarrafzadeh, Gary K. Yeap, Feroze Peshotan Taraporevala, Tong Gao, Douglas B. Boyle
  • Publication number: 20010047507
    Abstract: 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: Application
    Filed: June 12, 1998
    Publication date: November 29, 2001
    Inventors: LAWRENCE PILEGGI, MAJID SARRAFZADEH, GARY K. YEAP, FEROZE PESHOTAN TARAPOREVALA, TONG GAO, DOUGLAS B. BOYLE
  • Patent number: 6286128
    Abstract: 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: Grant
    Filed: June 12, 1998
    Date of Patent: September 4, 2001
    Assignee: 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