Patents by Inventor Chandu Gorla

Chandu Gorla 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: 9805809
    Abstract: Apparatuses, systems, methods, and computer program products are disclosed for state-dependent read compensation. A set of non-volatile storage cells comprising a plurality of word lines. A controller is configured to perform a read operation on one or more word lines adjacent to a target word line. A controller is configured to determine a read setting for application to a target word line based on a result of a read operation on one or more word lines adjacent to the target word line. A controller is configured to perform a read operation on a target word line using a determined read setting.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: October 31, 2017
    Assignee: SANDISK TECHNOLOGIES LLC
    Inventors: Zhenming Zhou, Guirong Liang, Gerrit Jan Hemink, Dana Lee, Chandu Gorla, Sarath Puthenthermadam, Deepanshu Dutta
  • Patent number: 8520425
    Abstract: A memory cell in a 3-D read and write memory device has two bipolar resistance-switching layers with different respective switching currents. A low current resistance-switching layer can be switched in set and reset processes while a high current resistance-switching layer remains in a reset state and acts as a protection resistor to prevent excessively high currents on the low current resistance-switching layer. The low and high current resistance-switching layers can be of the same material such as a metal oxide, where the layers differ in terms of thickness, doping, leakiness, metal richness or other variables. Or, the low and high current resistance-switching layers can be of different materials, having one or more layers each. The high current resistance-switching layer can have a switching current which is greater than a switching current of the low current resistance-switching layer by a factor of at least 1.5 or 2.0, for instance.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: August 27, 2013
    Assignee: SanDisk 3D LLC
    Inventors: Li Xiao, Chandu Gorla, Abhijit Bandyopadhyay, Andrei Mihnea
  • Publication number: 20120176831
    Abstract: A memory cell in a 3-D read and write memory device has two bipolar resistance-switching layers with different respective switching currents. A low current resistance-switching layer can be switched in set and reset processes while a high current resistance-switching layer remains in a reset state and acts as a protection resistor to prevent excessively high currents on the low current resistance-switching layer. The low and high current resistance-switching layers can be of the same material such as a metal oxide, where the layers differ in terms of thickness, doping, leakiness, metal richness or other variables. Or, the low and high current resistance-switching layers can be of different materials, having one or more layers each. The high current resistance-switching layer can have a switching current which is greater than a switching current of the low current resistance-switching layer by a factor of at least 1.5 or 2.0, for instance.
    Type: Application
    Filed: March 19, 2012
    Publication date: July 12, 2012
    Inventors: Li Xiao, Chandu Gorla, Abhijit Bandyopadhyay, Andrei Mihnea