Patents by Inventor Lei Bi

Lei Bi 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).

  • Patent number: 9058875
    Abstract: The present disclosure includes apparatuses and methods for sensing a resistive memory cell. A number of embodiments include performing a sensing operation on a memory cell to determine a current value associated with the memory cell, applying a programming signal to the memory cell, and determining a data state of the memory cell based on the current value associated with the memory cell before applying the programming signal and a current value associated with the memory cell after applying the programming signal.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: June 16, 2015
    Assignee: Micron Technology, Inc.
    Inventors: D. V. Nirmal Ramaswamy, Gurtej S. Sandhu, Lei Bi, Adam D. Johnson, Brent Keeth, Alessandro Calderoni, Scott E. Sills
  • Publication number: 20140339491
    Abstract: Apparatus, devices, systems, and methods are described that include filamentary memory cells. Mechanisms to substantially remove the filaments in the devices are described, so that the logical state of a memory cell that includes the that includes the removable filament can be detected. Additional apparatus, systems, and methods are described.
    Type: Application
    Filed: August 4, 2014
    Publication date: November 20, 2014
    Inventors: Lei Bi, Beth R. Cook, Marko Milojevic, Durai Vishak Nirmal Ramaswamy
  • Patent number: 8847530
    Abstract: A permanent-magnet AC motor comprises a motor and a controller coupled to the motor. The motor includes a winding. The controller includes a drive model configured to provide a drive current. Waveform of the drive current is spatially symmetrical. The winding has a waiting zone having electrical angle of 30° and a driving zone having electrical angle of 150° in each half electrical cycle when the motor is in operation. The driving zone is equally divided into five driving sub-zones.
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: September 30, 2014
    Assignee: Fortior Technology (Shenzhen) Co., Ltd.
    Inventor: Lei Bi
  • Patent number: 8837877
    Abstract: A patterned nonreciprocal optical resonator structure is provided that includes a resonator structure that receives an optical signal. A top cladding layer is deposited on a selective portion of the resonator structure. The top cladding layer is patterned so as to expose the core of the resonator structure defined by the selective portion. A magneto-optically active layer includes a magneto-optical medium being deposited on the exposed core of the resonator structure so as to generate optical non-reciprocity.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: September 16, 2014
    Assignee: Massachusetts Institute of Technology
    Inventors: Lionel C. Kimerling, Caroline A. Ross, Lei Bi, Peng Jiang, Juejun Hu, Dong Hun Kim, Gerald F. Dionne
  • Patent number: 8817522
    Abstract: Electronic apparatus, systems, and methods can include a resistive memory cell having a dielectric structured as an operably variable resistance region between an oxygen source and an oxygen sink. The dielectric, oxygen source, and an oxygen sink can be structured as a field driven unipolar memory element with respect to generation and healing of a filament in the dielectric. Additional apparatus, systems, and methods are disclosed.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: August 26, 2014
    Assignee: Micron Technology, Inc.
    Inventors: Durai Vishak Nirmal Ramaswamy, Lei Bi
  • Patent number: 8809157
    Abstract: A method of forming a memory cell includes forming one of multivalent metal oxide material or oxygen-containing dielectric material over a first conductive structure. An outer surface of the multivalent metal oxide material or the oxygen-containing dielectric material is treated with an organic base. The other of the multivalent metal oxide material or oxygen-containing dielectric material is formed over the treated outer surface. A second conductive structure is formed over the other of the multivalent metal oxide material or oxygen-containing dielectric material.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: August 19, 2014
    Assignee: Micron Technology, Inc.
    Inventors: D. V. Nirmal Ramaswamy, Beth R. Cook, Lei Bi, Wayne Huang, Ian C. Laboriante
  • Patent number: 8797784
    Abstract: Apparatus, devices, systems, and methods are described that include filamentary memory cells. Mechanisms to substantially remove the filaments in the devices are described, so that the logical state of a memory cell that includes the that includes the removable filament can be detected. Additional apparatus, systems, and methods are described.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: August 5, 2014
    Assignee: Micron Technology, Inc.
    Inventors: Lei Bi, Beth R. Cook, Marko Milojevic, Durai Vishak Nirmal Ramaswamy
  • Publication number: 20140185983
    Abstract: A structure for optically aligning an optical fiber to a photonic device and method of fabrication of same. The structure optically aligns an optical fiber to the photonic device using a lens between the two which is moveable by actuator heads. The lens is moveable by respective motive sources associated with the actuator heads.
    Type: Application
    Filed: January 2, 2013
    Publication date: July 3, 2014
    Applicant: MICRON TECHNOLOGY, INC.
    Inventors: Gurtej Sandhu, Roy Meade, Lei Bi, John Smythe
  • Publication number: 20140169066
    Abstract: The present disclosure includes apparatuses and methods for sensing a resistive memory cell. A number of embodiments include performing a sensing operation on a memory cell to determine a current value associated with the memory cell, applying a programming signal to the memory cell, and determining a data state of the memory cell based on the current value associated with the memory cell before applying the programming signal and a current value associated with the memory cell after applying the programming signal.
    Type: Application
    Filed: June 19, 2013
    Publication date: June 19, 2014
    Applicant: Micro Technology, Inc.
    Inventors: D.V. Nirmal Ramaswamy, Gurtej S. Sandhu, Lei Bi, Adam D. Johnson, Brent Keeth, Alessandro Calderoni, Scott E. Sills
  • Publication number: 20140111127
    Abstract: A sensorless driving method for a single phase alternating current permanent magnet motor is described. The method comprises a starting drive mode and a stable drive mode.
    Type: Application
    Filed: December 23, 2013
    Publication date: April 24, 2014
    Applicant: Fortior Technology
    Inventor: Lei Bi
  • Publication number: 20140106534
    Abstract: A method of forming a memory cell includes forming one of multivalent metal oxide material or oxygen-containing dielectric material over a first conductive structure. An outer surface of the multivalent metal oxide material or the oxygen-containing dielectric material is treated with an organic base. The other of the multivalent metal oxide material or oxygen-containing dielectric material is formed over the treated outer surface. A second conductive structure is formed over the other of the multivalent metal oxide material or oxygen-containing dielectric material.
    Type: Application
    Filed: December 13, 2013
    Publication date: April 17, 2014
    Applicant: Micron Technology, Inc.
    Inventors: D.V. Nirmal Ramaswamy, Beth R. Cook, Lei Bi, Wayne Huang, Ian C. Laboriante
  • Publication number: 20140061568
    Abstract: Electronic apparatus, systems, and methods can include a resistive memory cell having a structured as an operably variable resistance region between two electrodes and a metallic barrier disposed in a region between the dielectric and one of the two electrodes. The metallic barrier can have a structure and a material composition to provide oxygen diffusivity above a first threshold during program or erase operations of the resistive memory cell and oxygen diffusivity below a second threshold during a retention state of the resistive memory cell. Additional apparatus, systems, and methods are disclosed.
    Type: Application
    Filed: August 30, 2012
    Publication date: March 6, 2014
    Inventors: Durai Vishak Nirmal Ramaswamy, Lei Bi, Beth R. Cook, Dale W. Collins
  • Publication number: 20140056053
    Abstract: Electronic apparatus, systems, and methods can include a resistive memory cell having a dielectric structured as an operably variable resistance region between an oxygen source and an oxygen sink. The dielectric, oxygen source, and an oxygen sink can be structured as a field driven unipolar memory element with respect to generation and healing of a filament in the dielectric. Additional apparatus, systems, and methods are disclosed.
    Type: Application
    Filed: August 21, 2012
    Publication date: February 27, 2014
    Inventors: Durai Vishak Nirmal Ramaswamy, Lei Bi
  • Patent number: 8633084
    Abstract: A method of forming a memory cell includes forming one of multivalent metal oxide material or oxygen-containing dielectric material over a first conductive structure. An outer surface of the multivalent metal oxide material or the oxygen-containing dielectric material is treated with an organic base. The other of the multivalent metal oxide material or oxygen-containing dielectric material is formed over the treated outer surface. A second conductive structure is formed over the other of the multivalent metal oxide material or oxygen-containing dielectric material.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: January 21, 2014
    Assignee: Micron Technology, Inc.
    Inventors: D. V. Nirmal Ramaswamy, Beth R. Cook, Lei Bi, Wayne Huang, Ian C. Laboriante
  • Publication number: 20130329483
    Abstract: Apparatus, devices, systems, and methods are described that include filamentary memory cells. Mechanisms to substantially remove the filaments in the devices are described, so that the logical state of a memory cell that includes the that includes the removable filament can be detected. Additional apparatus, systems, and methods are described.
    Type: Application
    Filed: June 7, 2012
    Publication date: December 12, 2013
    Inventors: Lei Bi, Beth R. Cook, Marko Milojevic, Durai Vishak Nirmal Ramaswamy
  • Publication number: 20130207500
    Abstract: A three-phase PMAC motor comprises a rotor and a stator. The rotor includes a rotor iron core, a plurality of rotor teeth, a plurality of rotor slots each formed between two adjacent rotor teeth, and a plurality of permanent magnets disposed in respective rotor slots and attached on the rotor iron core. The plurality of permanent magnets forms at least 8 pairs of magnet poles with one or two permanent magnets being associated with one pair of magnetic poles. The stator includes a stator iron core, a plurality of stator teeth protruding inwardly from inner surface of the stator iron core, three groups of armature windings wound around each of the stator teeth, and a plurality of stator slots formed between two adjacent stator teeth. Each group of armature windings is associated with one electrical phase. An electrical phase shift exists between each two armature windings.
    Type: Application
    Filed: July 8, 2010
    Publication date: August 15, 2013
    Applicant: FORTIOR TECHNOLOGY (SHENZHEN) CO., LTD.
    Inventor: Lei Bi
  • Patent number: 8396913
    Abstract: A last fourier transform architecture has parallel data processing paths. Input data is applied to the parallel data processing paths in a repeating sequence, and processed in those paths. Data sequencers are used to combine the outputs from the data processing paths into the required sequence.
    Type: Grant
    Filed: April 11, 2006
    Date of Patent: March 12, 2013
    Assignee: NXP B.V.
    Inventors: Tianyan Pu, Lei Bi, Jerome Tjia
  • Publication number: 20130038261
    Abstract: A permanent-magnet AC motor comprises a motor and a controller coupled to the motor. The motor includes a winding. The controller includes a drive model configured to provide a drive current. Waveform of the drive current is spatially symmetrical. The winding has a waiting zone having electrical angle of 30° and a driving zone having electrical angle of 150° in each half electrical cycle when the motor is in operation. The driving zone is equally divided into five driving sub-zones.
    Type: Application
    Filed: April 26, 2010
    Publication date: February 14, 2013
    Inventor: Lei Bi
  • Publication number: 20130039618
    Abstract: A patterned nonreciprocal optical resonator structure is provided that includes a resonator structure that receives an optical signal. A top cladding layer is deposited on a selective portion of the resonator structure. The top cladding layer is patterned so as to expose the core of the resonator structure defined by the selective portion. A magneto-optically active layer includes a magneto-optical medium being deposited on the exposed core of the resonator structure so as to generate optical non-reciprocity.
    Type: Application
    Filed: August 11, 2011
    Publication date: February 14, 2013
    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Lionel C. Kimerling, Caroline A. Ross, Lei Bi, Peng Jiang, Juejun Hu, Dong Hun Kim, Gerald F. Dionne
  • Patent number: 8046401
    Abstract: A multiplier is able to multiply an input data value by a selected constant value in CSD form. The selected constant value has a plurality of pairs of bits, and the multiplier includes multiplexers, each controlled by a respective pair of bits of the selected constant value. Each of the multiplexers has a plurality of inputs, and is connected to receive the input data value, the inverse of the input data value, and all zeros on said inputs, and it is controlled such that it outputs either the input data value, the inverse of the input data value, or all zeros, depending on the values of the respective pair of bits of the selected constant value.
    Type: Grant
    Filed: March 23, 2006
    Date of Patent: October 25, 2011
    Assignee: NXP B.V.
    Inventors: Tianyan Pu, Lei Bi