Patents by Inventor Alessandro Calderoni

Alessandro Calderoni 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: 20150124517
    Abstract: Apparatus and methods of forming a memory cell are described. In one such method, a forming charge applied to a memory cell, such as a Resistive RAM (RRAM) memory cell, is monitored to determine the progress of the forming the cell. If the cell is consuming charge too slowly, a higher voltage can be applied. If the cell is consuming charge too quickly, a lower voltage can be applied. The charge may be monitored by charging a capacitor to a certain level, then monitoring the discharge rate of the capacitor though the cell. The monitoring may use comparators to measure the charge. The monitoring may also use an analog to digital converter to perform the monitoring.
    Type: Application
    Filed: January 2, 2015
    Publication date: May 7, 2015
    Inventors: Brent Keeth, Durai Vishak Nirmal Ramaswamy, Gurtej S. Sandhu, Adam D. Johnson, Scott E. Sills, Alessandro Calderoni
  • Patent number: 8929125
    Abstract: Apparatuses and methods of forming a memory cell is described. In one such method, a forming charge applied to a memory cell, such as a Resistive RAM (RRAM) memory cell, is monitored to determine the progress of the forming the cell. If the cell is consuming charge too slowly, a higher voltage can be applied. If the cell is consuming charge too quickly, a lower voltage can be applied. The charge may be monitored by charging a capacitor to a certain level, then monitoring the discharge rate of the capacitor though the cell. The monitoring may use comparators to measure the charge. The monitoring may also use an analog to digital converter to perform the monitoring.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: January 6, 2015
    Assignee: Micron Technology, Inc.
    Inventors: Brent Keeth, Durai Vishak Nirmal Ramaswamy, Gurtej S. Sandhu, Adam D. Johnson, Scott E. Sills, Alessandro Calderoni
  • Publication number: 20140233298
    Abstract: Apparatuses and methods of forming a memory cell is described. In one such method, a forming charge applied to a memory cell, such as a Resistive RAM (RRAM) memory cell, is monitored to determine the progress of the forming the cell. If the cell is consuming charge too slowly, a higher voltage can be applied. If the cell is consuming charge too quickly, a lower voltage can be applied. The charge may be monitored by charging a capacitor to a certain level, then monitoring the discharge rate of the capacitor though the cell. The monitoring may use comparators to measure the charge. The monitoring may also use an analog to digital converter to perform the monitoring.
    Type: Application
    Filed: February 20, 2013
    Publication date: August 21, 2014
    Applicant: Micron Technology, Inc.
    Inventors: Brent Keeth, Durai Vishak Nirmal Ramaswamy, Gurtej S. Sandhu, Adam D. Johnson, Scott E. Sills, Alessandro Calderoni
  • 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: 20140098593
    Abstract: The present disclosure includes apparatuses and methods including drift acceleration in resistance variable memory. A number of embodiments include applying a programming signal to the resistance variable memory cell to program the cell to a target state, subsequently applying a pre-read signal to the resistance variable memory cell to accelerate a drift of a resistance of the programmed cell, and subsequently applying a read signal to the resistance variable memory cell.
    Type: Application
    Filed: October 9, 2012
    Publication date: April 10, 2014
    Applicant: MICRON TECHNOLOGY, INC.
    Inventors: Alessandro Calderoni, Massimo Ferro, Paolo Fantini