Patents by Inventor John A. Sicich

John A. Sicich 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).

  • Method and system to measure data packet jitter
    Patent number: 7519086
    Abstract: A first data packet is sent through a system under measurement (SUM) from a sender side to a receiver side. A time distance d between the first data packet and a second data packet consecutive thereto in a packet flow is observed on the sender side. A value of d is written into a payload of the second data packet. The second data packet is sent through the SUM. The first data packet and the second data packet are received on the receiver side. A time difference D between the first data packet and the second data packet is observed on the receiver side. The value of d is extracted, at the receiver side, from the payload of the second data packet. The jitter is determined based on the value of d extracted from the payload of the second data packet and the value of the time difference D.
    Type: Grant
    Filed: August 13, 2004
    Date of Patent: April 14, 2009
    Assignee: AT&T Intellectual Property I. L.P.
    Inventors: Guangtian Liu, Jennifer Lynne Joy, John A. Sicich
  • Method and system to measure data packet jitter
    Publication number: 20060034339
    Abstract: A first data packet is sent through a system under measurement (SUM) from a sender side to a receiver side. A time distance d between the first data packet and a second data packet consecutive thereto in a packet flow is observed on the sender side. A value of d is written into a payload of the second data packet. The second data packet is sent through the SUM. The first data packet and the second data packet are received on the receiver side. A time difference D between the first data packet and the second data packet is observed on the receiver side. The value of d is extracted, at the receiver side, from the payload of the second data packet. The jitter is determined based on the value of d extracted from the payload of the second data packet and the value of the time difference D.
    Type: Application
    Filed: August 13, 2004
    Publication date: February 16, 2006
    Inventors: Guangtian Liu, Jennifer Joy, John Sicich