Patents by Inventor Arthur Tuminaro

Arthur Tuminaro 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: 8233331
    Abstract: A compare circuit for comparing a first data word with a second data word includes a plurality of sub-circuits, each having a two-bit static compare stage and a dynamic complex logic stage; a dynamic compare node responsive to respective outputs of the sub-circuits; and an output latch that captures a comparison result in accordance with a logic state of the dynamic compare node. In an exemplary embodiment, a local clock generator provides a single controlling clock signal for clocking the output latch, precharging of the dynamic compare node, and clocking of the dynamic complex logic stage of the sub-circuits.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: July 31, 2012
    Assignee: International Business Machines Corporation
    Inventors: Yuen H. Chan, Antonio R. Pelella, Richard E. Serton, Arthur Tuminaro
  • Publication number: 20110298500
    Abstract: A compare circuit for comparing a first data word with a second data word includes a plurality of sub-circuits, each having a two-bit static compare stage and a dynamic complex logic stage; a dynamic compare node responsive to respective outputs of the sub-circuits; and an output latch that captures a comparison result in accordance with a logic state of the dynamic compare node. In an exemplary embodiment, a local clock generator provides a single controlling clock signal for clocking the output latch, precharging of the dynamic compare node, and clocking of the dynamic complex logic stage of the sub-circuits.
    Type: Application
    Filed: June 2, 2010
    Publication date: December 8, 2011
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Yuen H. Chan, Antonio R. Pelella, Richard E. Serton, Arthur Tuminaro
  • Publication number: 20080056052
    Abstract: A domino SRAM global bit select circuit provides an interface between dual global read and write bit line pairs to a “local bit select” circuit.
    Type: Application
    Filed: November 1, 2007
    Publication date: March 6, 2008
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Yuen Chan, Ryan Freese, Antonio Pelella, Arthur Tuminaro
  • Publication number: 20070058421
    Abstract: A domino SRAM array restore pulse generation system launches the work decode line by the same local clock as the restore pulse, thus eliminating any race issues with the word line select. This system allows the global bit select (or column select) to have fast activation by releasing the reset signal (with the earliest arriving array clock, ck1), while guaranteeing almost perfect tracking with the bit decode system. This allows for the widest possible write window; earliest release of the pre-charge in the global column select, and resetting only after the bit decode system is deactivated.
    Type: Application
    Filed: October 30, 2006
    Publication date: March 15, 2007
    Inventors: Yuen Chan, Ryan Freese, Antonio Pelella, Uma Srinivasan, Arthur Tuminaro, Jatinder Wadhwa
  • Publication number: 20060176729
    Abstract: A domino SRAM is provided with active pull-up PFET devices that overwhelm “slow to write but very fast to read” cells and allow the cells to recover from timing mismatch situations. This approach allows the traditional “bit select” clamp to actively control the “local select” through “wired-or” PFET pull-up transistors.
    Type: Application
    Filed: February 9, 2005
    Publication date: August 10, 2006
    Applicant: International Business Machines Corporation
    Inventors: Yuen Chan, Ryan Freese, Antonio Pelella, Arthur Tuminaro
  • Publication number: 20060176753
    Abstract: A domino SRAM global bit select circuit provides an interface between dual global read and write bit line pairs to a “local bit select” circuit.
    Type: Application
    Filed: February 9, 2005
    Publication date: August 10, 2006
    Applicant: International Business Machines Corporation
    Inventors: Yuen Chan, Ryan Freese, Antonio Pelella, Arthur Tuminaro
  • Publication number: 20060176730
    Abstract: A domino SRAM array restore pulse generation system launches the word decode line by the same local clock as the restore pulse, thus eliminating any race issues with the word line select. This system allows the global bit select (or column select) to have fast activation by releasing the reset signal (with the earliest arriving array clock, ckl), while guaranteeing almost perfect tracking with the bit decode system. This allows for the widest possible write window; earliest release of the pre-charge in the global column select, and resetting only after the bit decode system is deactivated.
    Type: Application
    Filed: February 9, 2005
    Publication date: August 10, 2006
    Applicant: International Business Machines Corporation
    Inventors: Yuen Chan, Ryan Freese, Antonio Pelella, Uma Srinivasan, Arthur Tuminaro, Jatinder Wadhwa
  • Publication number: 20050254317
    Abstract: A SRAM sense amplifier timing circuit provides various delay settings for the sense amplifier enable signal (sae) and the sense amplifier reset signal (rse) in order to allow critical timing adjustments to be made for early mode, late mode conditions by varying the timing or with of the sense amplifier output pulse. These timing adjustments are programmable using scan in bits.
    Type: Application
    Filed: May 12, 2004
    Publication date: November 17, 2005
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Yuen Chan, Timothy Charest, John Rawlins, Arthur Tuminaro, Jatinder Wadhwa, Otto Wagner
  • Publication number: 20050128855
    Abstract: Bit and write decode/drivers, a random access memory (RAM) including the decode/drivers and an IC with a static RAM (SRAM) including the decode/drivers. The decode/drivers are clocked by a local clock and each produce access pulses wider than corresponding clock pulses. The bit decode/driver produces bit select pulses that are wider than a word select pulse and the write decode/driver produces write pulses that are wider than the bit select pulses for stable self timed RAM write accesses.
    Type: Application
    Filed: December 15, 2003
    Publication date: June 16, 2005
    Inventors: Rajiv Joshi, Arthur Tuminaro