Patents by Inventor Johan Vantieghem

Johan Vantieghem 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).

  • Techniques for updating an automatic speech recognition system using finite-state transducers
    Patent number: 9715874
    Abstract: Techniques are described for updating an automatic speech recognition (ASR) system that, prior to the update, is configured to perform ASR using a first finite-state transducer (FST) comprising a first set of paths representing recognizable speech sequences. A second FST may be accessed, comprising a second set of paths representing speech sequences to be recognized by the updated ASR system. By analyzing the second FST together with the first FST, a patch may be extracted and provided to the ASR system as an update, capable of being applied non-destructively to the first FST at the ASR system to cause the ASR system using the first FST with the patch to recognize speech using the second set of paths from the second FST. In some embodiments, the patch may be configured such that destructively applying the patch to the first FST creates a modified FST that is globally minimized.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: July 25, 2017
    Assignee: Nuance Communications, Inc.
    Inventors: Stephan Kanthak, Jan Vlietinck, Johan Vantieghem, Stijn Verschaeren
  • TECHNIQUES FOR UPDATING AN AUTOMATIC SPEECH RECOGNITION SYSTEM USING FINITE-STATE TRANSDUCERS
    Publication number: 20170125012
    Abstract: Techniques are described for updating an automatic speech recognition (ASR) system that, prior to the update, is configured to perform ASR using a first finite-state transducer (FST) comprising a first set of paths representing recognizable speech sequences. A second FST may be accessed, comprising a second set of paths representing speech sequences to be recognized by the updated ASR system. By analyzing the second FST together with the first FST, a patch may be extracted and provided to the ASR system as an update, capable of being applied non-destructively to the first FST at the ASR system to cause the ASR system using the first FST with the patch to recognize speech using the second set of paths from the second FST. In some embodiments, the patch may be configured such that destructively applying the patch to the first FST creates a modified FST that is globally minimized.
    Type: Application
    Filed: October 30, 2015
    Publication date: May 4, 2017
    Applicant: Nuance Communications, Inc.
    Inventors: Stephan Kanthak, Jan Vlietinck, Johan Vantieghem, Stijn Verschaeren