Patents Assigned to Apache Systems, Inc.
  • Address lookup DRAM aging
    Patent number: 6230235
    Abstract: Systems and methods are described for network address lookup entry aging in a DRAM memory. A method of DRAM data aging includes: refreshing a row of memory cells in an array of DRAM memory cells. The refreshing periodically includes aging all entries that are stored in the row of memory cells. The systems and methods provide advantages in that an existing operation is used for an additional function. In addition, the aging can be implemented with closely coupled logic using the sense amplifiers.
    Type: Grant
    Filed: September 29, 1998
    Date of Patent: May 8, 2001
    Assignee: Apache Systems, Inc.
    Inventors: Hsuehchung Shelton Lu, David Keene