Resources Contact Us Home
Memory system which enables storage and retrieval of more than two states in a memory cell

Image Number 7 for United States Patent #5808932.

A memory circuit which enables storage of more than two logic states in a memory cell. Since the additional logic states may be used to represent additional information bits, this memory circuit increases the number of bits that may be stored per memory cell, thereby increasing the storage density and reducing the cost per bit. The disclosed memory circuit comprises an analog-to-digital converter coupled to detect a current through a transistor in a memory cell. The current is determined by a charge stored on the transistor's gate. By enabling the current to be detected in discrete increments, it becomes possible to represent more than one bit of information with the charge stored in the memory cell. Usage of additional increments necessitates more precise storage and detection circuitry. In one embodiment, the storage circuitry uses feedback to obtain a greater logic state retrieval accuracy.

  Recently Added Patents
Laser receiver for detecting a relative position
Controller for flexible and extensible flow processing in software-defined networks
Electrophotographic photoreceptor, image-forming apparatus, and electrophotographic cartridge
High pressure refolding of protein aggregates and inclusion bodies
Method of optimizing air mover performance characteristics to minimize temperature variations in a computing system enclosure
Method for resource allocation in a wireless communication network, method for error-free transmission of information, node and wireless communication network
Apparatus for electrographic printing or copying
  Randomly Featured Patents
Method of monitoring the operation of a catalytic converter
Vertical engagement hydraulic tool coupler
Substituted aminoguanidines and methods of use thereof
Fundamental armor module in breakwater net linked system
Method and apparatus for support of tagging and untagging per VLAN per port
Steering column for a motor vehicle
Apparatus for the preparation of a reaction mixture from fluid components
Environmental composition and method for making the same