Patents by Inventor William L. Lippitt

William L. Lippitt 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).

  • Patent number: 5587964
    Abstract: A page mode/nibble mode dynamic random access memory (DRAM) comprising row and column decoders, the column decoder further comprising a column address buffer and a column address buffer counter. The page mode/nibble mode DRAM also comprises a buffer controller means adapted to receive a write enable signal and to determine whether the DRAM should be placed in a page mode or a nibble mode to facilitate the particular memory access requested by a memory controller. An asserted write enable signal, may indicate, for example, a write operation, thereby calling for the page mode/nibble mode DRAM to move into a page mode to effectuate the write operation. The page mode/nibble mode DRAM also utilizes the write enable signal in the conventional manner, to indicate the initiation of a particular type of memory access, namely a write operation or a read operation.
    Type: Grant
    Filed: April 1, 1996
    Date of Patent: December 24, 1996
    Assignee: Digital Equipment Corporation
    Inventors: Mitchell N. Rosich, William L. Lippitt