Patents by Inventor Devika Raghu

Devika Raghu 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: 10446215
    Abstract: A system and method are provided for system for adaptive refresh of a memory device having multiple integrated circuit chips. A command generation portion generates commands for actuating a plurality of operational tasks on the memory device, including at least read, write, and refresh operations for selectively addressed storage cells of the memory device. A command management portion stores the commands and selects from the commands for timely execution of corresponding operational tasks on the memory device. A refresh management portion coupled to the command generation and command management portions actuates a plurality of refresh operations adaptively interleaved with other operational tasks, such that recursive refresh of the storage cells is carried out for the memory device within a predetermined refresh window of time. The refresh management portion selectively actuates each refresh operation for a chip-based selection of storage cells, whereby the storage cells of a selected chip are refreshed.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: October 15, 2019
    Assignee: CADENCE DESIGN SYSTEMS, INC.
    Inventors: Anne Hughes, John MacLaren, Devika Raghu