Patents by Inventor Shahram Ghahremani

Shahram Ghahremani 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: 7148755
    Abstract: A system and method that can be utilized to implement voltage adjustment (e.g., for an integrated circuit). In one embodiment, the system comprises a frequency generator that provides a clock signal having a frequency that varies based on an operating voltage. The system also includes a controller that provides a control signal to adjust the operating voltage based on adjustments to the frequency of the clock signal.
    Type: Grant
    Filed: August 26, 2003
    Date of Patent: December 12, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Samuel D. Naffziger, Shahram Ghahremani, Christopher A. Poirier
  • Patent number: 7068081
    Abstract: Systems, methodologies, media, and other embodiments associated with making a frequency change through frequency synthesis and digital selection of out-of-phase synthesized signals are described. One exemplary system embodiment includes a locked loop logic (e.g., phase locked, delay locked) that may receive a reference clock signal, process the reference clock signal into signals with different phases, and make those signals available to a selection logic. The exemplary system may also include a state logic that stores frequency divisors that facilitate selecting and tracking output signals provided by the selection logic. The exemplary system may also include a phase logic that stores output signal phase data associated with computing, describing, and/or selecting an output signal.
    Type: Grant
    Filed: May 4, 2004
    Date of Patent: June 27, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Samuel David Naffziger, Shahram Ghahremani
  • Publication number: 20050248373
    Abstract: Systems, methodologies, media, and other embodiments associated with making a frequency change through frequency synthesis and digital selection of out-of-phase synthesized signals are described. One exemplary system embodiment includes a locked loop logic (e.g., phase locked, delay locked) that may receive a reference clock signal, process the reference clock signal into signals with different phases, and make those signals available to a selection logic. The exemplary system may also include a state logic that stores frequency divisors that facilitate selecting and tracking output signals provided by the selection logic. The exemplary system may also include a phase logic that stores output signal phase data associated with computing, describing, and/or selecting an output signal.
    Type: Application
    Filed: May 4, 2004
    Publication date: November 10, 2005
    Inventors: Samuel Naffziger, Shahram Ghahremani
  • Publication number: 20050062507
    Abstract: A system and method that can be utilized to implement voltage adjustment (e.g., for an integrated circuit). In one embodiment, the system comprises a frequency generator that provides a clock signal having a frequency that varies based on an operating voltage. The system also includes a controller that provides a control signal to adjust the operating voltage based on adjustments to the frequency of the clock signal.
    Type: Application
    Filed: August 26, 2003
    Publication date: March 24, 2005
    Inventors: Samuel Naffziger, Shahram Ghahremani, Christopher Poirier
  • Patent number: 6072346
    Abstract: The present invention provides a level sensitive circuit connected to the output portion of a register, which synchronizes an asynchronous input to a clocked network driven by the CPU system clock. The level sensitive circuit ensures that the output of the synchronizing register will always be a definite binary signal, i.e. logical 0 (ground, or absence of voltage) or logical 1 (voltage). The present invention not only minimizes the occurrence of a metastable condition, but also recognizes that metastability may occur. The present invention is optimized to prevent metastability and includes a synchronizing latch having an output circuit with a feedback mechanism that effectively causes the output voltage of the register to be a valid signal only when any metastable condition has resolved itself. More particularly, the non-inverted output of the register is utilized as feedback to the level sensitive circuit.
    Type: Grant
    Filed: December 29, 1997
    Date of Patent: June 6, 2000
    Assignee: Metaflow Technologies, Inc.
    Inventor: Shahram Ghahremani