Patents by Inventor Roy Thomas Myers, Jr.

Roy Thomas Myers, Jr. 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).

  • Data recovery for non-uniformly spaced edges
    Patent number: 6760389
    Abstract: A shared data and clock recovery circuit including a clock synthesizer for generating sampling signals having different phases, a multiple transition detector for receiving a data stream and sampling signals, and for detecting edges in a data stream in response to the sampling signals, a counter and accumulator for detecting the time occurrences and total number of edges, and for performing weighted average calculation to select one of the phases, a decision circuit for detecting the phase difference between a source clock and a local clock such that if the PPM difference between the source clock and the local clock is at least 200 PPM, then selection of a phase is based upon stored historical information, and if the PPM difference between the source clock and the local clock is less than 200 PPM, then selection of a phase is based on a weighted averaging calculation.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: July 6, 2004
    Assignee: Agere Systems Inc.
    Inventors: Shankar Ranjan Mukherjee, Jules Joseph Jelinek, Roy Thomas Myers, Jr.
  • Shared data and clock recovery for packetized data
    Patent number: 6584163
    Abstract: A shared data and clock recovery circuit including a clock synthesizer for generating sampling signals having different phases, a multiple transition detector for receiving a data stream and sampling signals, and for detecting edges in a data stream in response to the sampling signals, a counter and accumulator for detecting the time occurrences and total number of edges, and for performing weighted average calculation to select one of the phases, a decision circuit for detecting the phase difference between a source clock and a local clock such that if the PPM difference between the source clock and the local clock is at least 200 PPM, then selection of a phase is based upon stored historical information, and if the PPM difference between the source clock and the local clock is less than 200 PPM, then selection of a phase is based on a weighted averaging calculation.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: June 24, 2003
    Assignee: Agere Systems Inc.
    Inventors: Roy Thomas Myers, Jr., Shankar Ranjan Mukherjee, Jules Joseph Jelinek