Resources Contact Us Home

Image Number 15 for United States Patent #7362642.

A memory allowing reduction of the period of an external access operation is provided. This memory comprises an access control portion performing an internal access operation on the basis of an external access operation, a refresh control portion performing a refresh operation and a refresh division control portion dividing the refresh operation into a read operation RFRD and rewrite operations RFRS1 and RFRS2. The memory performs the read operation RFRD and the rewrite operations RFRS1 and RFRS2 at least either before or after different internal access operations corresponding to different external access operations respectively.

  Recently Added Patents
Non-serialized electronic product registration system and method of operating same
Oxidative coupling of hydrocarbons as heat source
Wire guide
Selective facsimile denial
Simulation tool for air traffic communications security
Method for producing coated steel sheet
Electronic system and method for compensating the dimensional accuracy of a 4-axis CNC machining system using global and local offsets
  Randomly Featured Patents
Coarse/fine digital pattern combiner for high accuracy
Method of making a transistor array
Autonomous ocean bottom seismic node recording device
Combined fluorescent and phosphorescent structures
Ophthalmic photographic device
Feedback controller, digital filter device, and storage device
Energy storage
Dental apparatus
Fluid specimen collection and testing apparatus