Patents by Inventor Babysaroja Annem

Babysaroja Annem 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).

  • Logical address direct memory access with multiple concurrent physical ports and internal switching
    Patent number: 8271700
    Abstract: A DMA engine is provided that is suitable for higher performance System On a Chip (SOC) devices that have multiple concurrent on-chip/off-chip memory spaces. The DMA engine operates either on logical addressing method or physical addressing method and provides random and sequential mapping function from logical address to physical address while supporting frequent context switching among a large number of logical address spaces. Embodiments of the present invention utilize per direction (source-destination) queuing and an internal switch to support non-blocking concurrent transfer of data on multiple directions. A caching technique can be incorporated to reduce the overhead of address translation.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: September 18, 2012
    Assignee: PMC-Sierra US, Inc.
    Inventors: Babysaroja Annem, David J. Clinton, Praveen Alexander
  • Logical address direct memory access with multiple concurrent physical ports and internal switching
    Patent number: 7877524
    Abstract: A DMA engine is provided that is suitable for higher performance System On a Chip (SOC) devices that have multiple concurrent on-chip/off-chip memory spaces. The DMA engine operates either on logical addressing method or physical addressing method and provides random and sequential mapping function from logical address to physical address while supporting frequent context switching among a large number of logical address spaces. Embodiments of the present invention utilize per direction (source-destination) queuing and an internal switch to support non-blocking concurrent transfer of data on multiple directions. A caching technique can be incorporated to reduce the overhead of address translation.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: January 25, 2011
    Assignee: PMC-Sierra US, Inc.
    Inventors: Babysaroja Annem, Heng Liao, Zhongzhi Liu, Praveen Alexander