Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Semiconductor memory device










Image Number 17 for United States Patent #7027342.

In a semiconductor memory device having a crosspoint-type memory cell array, each reference level between two adjacent memory levels when memory levels of multi-level information stored in a memory cell are arranged in order of size of resistance values of a corresponding variable resistive element is defined by a reference current in a middle state between a first and a second current states. In the first current state, a readout current of high resistance selected cell in which the resistance is higher in the two adjacent memory levels becomes the largest state depending on a distribution pattern of a resistance state of the other unselected cell. In the second current state, a readout current of low resistance selected cell in which the resistance is lower in the two adjacent memory levels becomes a smallest state depending on a distribution pattern of a resistance state of the other unselected memory cell.








 
 
  Recently Added Patents
Pharmaceutical and diagnostic compositions for use in the treatment and diagnosis of neurodegenerative diseases or amyloid diseases
Caprazene as a novel compound and derivatives thereof, and caprazol as a novel compound and derivatives thereof
Method, system and computer program product for managing funds in custodial deposit accounts
Stable liquid VEGF antagonist formulations
Lightweight multicast method and apparatus for data distribution service
Method and apparatus for controllable communication
Printing device, printing system, program, and printing method for printing based on print data from a user authorized to issue a print instruction for the print data
  Randomly Featured Patents
Device for uncoupling the oil flow through a radiator
Window mounting for optical sensor
Perforated laminate
LED package
Transmitted-light illuminating device
Distributed power control system
Wound healing compositions
CMOS imaging device with integrated defective pixel correction circuitry
Method and apparatus for the synchronization of two rotating parts
Toilet bowl cleaning and/or deodorizing device