Patents by Inventor Bart Brosens

Bart Brosens 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).

  • SONET/SDH SPE/virtual container retiming with adaptive dual pointer leak rate computation
    Patent number: 7349444
    Abstract: Methods for retiming SONET signals include demultiplexing STS-1 signals from an STS-N signal, buffering each of the STS-1 signals in a FIFO, determining the FIFO depth over time, and determining a pointer leak rate based in part on FIFO depth and also based on the rate of received pointer movements. According to the presently preferred embodiment, each FIFO is 29 bytes deep. If FIFO depth is 12-17 bytes, no leaking is performed. If the depth is 8-12 bytes or 17-21 bytes, a slow leak rate is set. If the depth is 4-8 bytes or 21-25 bytes, a fast leak rate is set. If the depth is 0-4 bytes or 25-29 bytes, pointer movements are immediate. The calculated leak rates are based on the net number of pointer movements (magnitude of positive and negative movements summed) received during a sliding window of n×32 seconds (n×256,000 frames).
    Type: Grant
    Filed: August 23, 2004
    Date of Patent: March 25, 2008
    Assignee: Transwitch Corporation
    Inventors: Daniel C. Upp, Suvhasis Mukhopadhyay, Bart Brosens, Kris Van Aken, Chitra Wadhwa, Sachin Mathur, Ramses Valvekens
  • SONET/SDH SPE/virtual container retiming with adaptive dual pointer leak rate computation
    Publication number: 20060039415
    Abstract: Methods for retiming SONET signals include demultiplexing STS-1 signals from an STS-N signal, buffering each of the STS-1 signals in a FIFO, determining the FIFO depth over time, and determining a pointer leak rate based in part on FIFO depth and also based on the rate of received pointer movements. According to the presently preferred embodiment, each FIFO is 29 bytes deep. If FIFO depth is 12-17 bytes, no leaking is performed. If the depth is 8-12 bytes or 17-21 bytes, a slow leak rate is set. If the depth is 4-8 bytes or 21-25 bytes, a fast leak rate is set. If the depth is 0-4 bytes or 25-29 bytes, pointer movements are immediate. The calculated leak rates are based on the net number of pointer movements (magnitude of positive and negative movements summed) received during a sliding window of n×32 seconds (n×256,000 frames).
    Type: Application
    Filed: August 23, 2004
    Publication date: February 23, 2006
    Inventors: Daniel Upp, Suvhasis Mukhopadhyay, Bart Brosens, Kris Aken, Chitra Wadhwa, Sachin Mathur, Ramses Valvekens