Patents by Inventor Jaydeep P. Kulkarni

Jaydeep P. Kulkarni 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).

  • Publication number: 20110317508
    Abstract: In some embodiments, write wordline boost may be obtained from wordline driver boost and/or from bit line access transistor boost.
    Type: Application
    Filed: June 25, 2010
    Publication date: December 29, 2011
    Inventors: JAYDEEP P. KULKARNI, Muhammad M. Khellah, Bibiche M. Geuskens, Arijit Raychowdhury, Tanay Karnik, Vivek K. De
  • Publication number: 20110149661
    Abstract: In some embodiments, an apparatus comprising a memory array of static random access memory (SRAM) cells arranged in a plurality of rows and a plurality of columns and configured to receive a clock signal having a plurality of clock cycles; a plurality of word-lines associated with the plurality of rows of the SRAM cells; and a selected word-line driver configured during an extended write operation to drive a selected one of the plurality of word-lines with a write word-line signal having an extended duration. Other embodiments may be described and claimed.
    Type: Application
    Filed: December 18, 2009
    Publication date: June 23, 2011
    Inventors: Iqbal R. Rajwani, Satish K. Damaraju, Niranjan L. Cooray, Muhammad M. Khellah, Jaydeep P. Kulkarni
  • Patent number: 7952912
    Abstract: A bit-cell may include a pair of cross-coupled inverters, a left bit-line, a right bit-line, a word-line and a write-line. The left bit-line may be coupled to a left inverter of the cross-coupled inverters via a left word-line transistor and a left write-line transistor. The right bit-line may be coupled to a right inverter of the cross-coupled inverters via a right word-line transistor and a right write-line transistor. The word-line may be coupled to the gates of the left and right word-line transistors and the write-line may be coupled to the gates of the left and right write-line transistors. A memory device may include a controller, an array of such bit-cells and a differential sensing buffers. Further, a computing device may include a processor and a memory device having the above bit-cells.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: May 31, 2011
    Assignee: Purdue Research Foundation
    Inventors: Jaydeep P. Kulkarni, Kaushik Roy
  • Patent number: 7672152
    Abstract: A Schmitt Trigger (ST) based, fully differential, 10-transistor (10T) SRAM (Static Random Access Memory) bitcell suitable for sub-threshold operation. The Schmitt trigger based bitcell achieves 1.56× higher read static noise margin (SNM) (VDD=400 mV) compared to a conventional 6T cell. The robust Schmitt trigger based memory cell exhibits built-in process variation tolerance that gives tight SNM distribution across the process corners. It utilizes fully differential operation and hence does not require any architectural changes from the present 6T architecture. The 10T bitcell has two cross-coupled Schmitt trigger inverters which each consist of four transistors, including a PMOS transistor and two NMOS transistors in series, and an NMOS feedback transistor which is connected between the inverter output and the junction between the series-connected NMOS transistors. Each inverter has one associated NMOS access transistor.
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: March 2, 2010
    Assignee: Purdue Research Foundation
    Inventors: Jaydeep P. Kulkarni, Kaushik Roy
  • Publication number: 20090303775
    Abstract: A bit-cell may include a pair of cross-coupled inverters, a left bit-line, a right bit-line, a word-line and a write-line. The left bit-line may be coupled to a left inverter of the cross-coupled inverters via a left word-line transistor and a left write-line transistor. The right bit-line may be coupled to a right inverter of the cross-coupled inverters via a right word-line transistor and a right write-line transistor. The word-line may be coupled to the gates of the left and right word-line transistors and the write-line may be coupled to the gates of the left and right write-line transistors. A memory device may include a controller, an array of such bit-cells and a differential sensing buffers. Further, a computing device may include a processor and a memory device having the above bit-cells.
    Type: Application
    Filed: June 6, 2008
    Publication date: December 10, 2009
    Inventors: Jaydeep P. Kulkarni, Kaushik Roy