Patents by Inventor Scott E. Schaefer

Scott E. Schaefer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for providing synchronous refresh cycles in self-refreshing interruptable DRAMs
    Patent number: 5335201
    Abstract: The invention is a method for synchronizing the refresh cycles of a bank of self-refreshing interruptable DRAMs. The refresh cycles are synchronized through a bidirectional control path from each self-refreshing interruptable DRAM to its respective external refresh pin.
    Type: Grant
    Filed: April 15, 1991
    Date of Patent: August 2, 1994
    Assignee: Micron Technology, Inc.
    Inventors: Terry R. Walther, Scott E. Schaefer
  • Circuit for synchronizing refresh cycles in self-refreshing drams having timing circuit shutdown
    Patent number: 5229970
    Abstract: The invention is a circuit synchronizing the refresh cycles of a bank of self-refreshing DRAMs. The refresh cycles are synchronized through a bidirectional control path from each self-refreshing DRAM to its respective external refresh pin. An arbitration circuit determines the self-refreshing DRAM having a fastest timing sequence, maintains that timing sequence and shuts down all timing circuits having slower timing sequences. The arbitration circuit of each self-refreshing DRAM provides a refresh signal to each respective refresh circuit.
    Type: Grant
    Filed: April 15, 1991
    Date of Patent: July 20, 1993
    Assignee: Micron Technology, Inc.
    Inventors: Terry R. Lee, Terry R. Walther, Scott E. Schaefer
  • Method for synchronizing refresh cycles in self-refreshing DRAMs having timing circuit shutdown
    Patent number: 5229969
    Abstract: The invention synchronizes the refresh cycles of a bank of self-refreshing DRAMs. The refresh cycles are synchronized through a bidirectional control path from each self-refreshing DRAM to its respective external refresh pin. An arbitration circuit determines the self-refreshing DRAM having a fastest timing sequence, maintains that timing sequence and shuts down all timing circuits having slower timing sequences. The arbitration circuit of each self-refreshing DRAM provides a refresh signal to each respective refresh circuit.
    Type: Grant
    Filed: April 15, 1991
    Date of Patent: July 20, 1993
    Assignee: Micron Technology, Inc.
    Inventors: Terry R. Lee, Terry R. Walther, Scott E. Schaefer
  • Circuit for providing synchronous refresh cycles in self-refreshing interruptable DRAMs
    Patent number: 5208779
    Abstract: The invention is a circuit for synchronizing the refresh cycles of a bank of self-refreshing interruptable DRAMs. The refresh cycles are synchronized through a bidirectional control path from each self-refreshing interruptable DRAM to its respective external refresh pin.
    Type: Grant
    Filed: April 15, 1991
    Date of Patent: May 4, 1993
    Assignee: Micron Technology, Inc.
    Inventors: Terry R. Walther, Scott E. Schaefer