Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Semiconductor device and fabrication method
Adaptive non-positive inductor current detector (ANPICD)
Decision management system and method
Method and apparatus for soft information transfer between constituent processor circuits in a soft-value processing apparatus
Laser marking of a card
High throughput thin film characterization and defect detection
Processor micro-architecture for compute, save or restore multiple registers, devices, systems, methods and processes of manufacture
  Randomly Featured Patents
Camera with multiple viewfinders
Synthetic vaccine peptide epitomes of hepatitis B surface antigen
Mounting arrangement for cantilevered chair arm
Vertical light emitting diode and method of manufacturing the same
Engagement modulator for torque converter bypass
Air conditioner for vehicle
DC motor
Process for producing copper barrier type, nuclear fuel cladding
Adaptive zero mean system for controlling noise false alarm rate
Toner kit for electrophotography