Patents by Inventor Yuiry Greshishchev

Yuiry Greshishchev 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).

  • Clock and data recovery locking technique for large frequency offsets
    Patent number: 8139702
    Abstract: Techniques and apparatus for a clock and data recovery circuit to lock to data having frequency offsets relative to a local clock reference are disclosed. One embodiment includes a multi-step frequency tracking system in which each step is used to track a sub-range of frequency deviation from local clock reference. The frequency tracking sub-range of each step is selected so that the clock and data recovery system is relatively assured of achieving lock when the frequency of the incoming data lies within or is relatively near the frequency tracking sub-range of the selected step. Embodiments may use control signals to select the sub-ranges, and hence guide the frequency tracking portion of the clock and data recovery circuit to operate in a frequency tracking range that is optimized for achieving and maintaining lock.
    Type: Grant
    Filed: June 14, 2010
    Date of Patent: March 20, 2012
    Assignee: PMC-Sierra, Inc.
    Inventors: Guillaume Fortin, Larrie Carr, Yuiry Greshishchev, Alex Cochran, Junqi (Paul) Hua
  • Clock and data recovery locking technique for large frequency offsets
    Patent number: 7738617
    Abstract: Techniques and apparatus for a clock and data recovery circuit to lock to data having frequency offsets relative to a local clock reference are disclosed. One embodiment includes a multi-step frequency tracking system in which each step is used to track a sub-range of frequency deviation from local clock reference. The frequency tracking sub-range of each step is selected so that the clock and data recovery system is relatively assured of achieving lock when the frequency of the incoming data lies within or is relatively near the frequency tracking sub-range of the selected step. Embodiments may use control signals to select the sub-ranges, and hence guide the frequency tracking portion of the clock and data recovery circuit to operate in a frequency tracking range that is optimized for achieving and maintaining lock.
    Type: Grant
    Filed: September 28, 2005
    Date of Patent: June 15, 2010
    Assignee: PMC-Sierra, Inc.
    Inventors: Guillaume Fortin, Larrie Carr, Yuiry Greshishchev, Alex Cochran, Junqi (Paul) Hua