Patents by Inventor Branislav Ivanic

Branislav Ivanic 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).

  • Apparatus and method for quantitative measurement of voice quality in packet network environments
    Patent number: 7092880
    Abstract: A system and a method for quantitatively measuring voice transmission quality within a voice-over-data-network such as a telephony-enabled LAN utilize speech recognition to measure the quality of voice transmission. A first aspect of the invention involves determining the suitability of the LAN for voice communications. A voice sample is selected by a first terminal and is transmitted to a second terminal on the LAN a number of times. The first terminal introduces an incrementally larger quantity of noise into each transmission of the voice packet. The second terminal performs speech recognition for each successively received voice sample and determines the accuracy for each speech recognition session. The amount of noise which drops the speech recognition accuracy below a threshold level provides a measure of the suitability of the LAN for voice communications. During normal operation of the LAN, speech recognition accuracy tests are performed between various endpoints to monitor voice transmission quality.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: August 15, 2006
    Assignee: Siemens Communications, Inc.
    Inventors: Branislav Ivanic, Eli Jacobi, Peter Kozdon, Noboru Nishiya, Christoph A. Aktas
  • Apparatus and method for quantitative measurement of voice quality in packet network environments
    Publication number: 20040059572
    Abstract: A system and a method for quantitatively measuring voice transmission quality within a voice-over-data-network such as a telephony-enabled LAN utilize speech recognition to measure the quality of voice transmission. A first aspect of the invention involves determining the suitability of the LAN for voice communications. A voice sample is selected by a first terminal and is transmitted to a second terminal on the LAN a number of times. The first terminal introduces an incrementally larger quantity of noise into each transmission of the voice packet. The second terminal performs speech recognition for each successively received voice sample and determines the accuracy for each speech recognition session. The amount of noise which drops the speech recognition accuracy below a threshold level provides a measure of the suitability of the LAN for voice communications. During normal operation of the LAN, speech recognition accuracy tests are performed between various endpoints to monitor voice transmission quality.
    Type: Application
    Filed: September 25, 2002
    Publication date: March 25, 2004
    Inventors: Branislav Ivanic, Eli Jacobi, Peter Kozdon, Noboru Nishiya, Christoph Aktas