Patents by Inventor Andrzej Czyzewski

Andrzej Czyzewski 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).

  • Publication number: 20140133648
    Abstract: A method of acoustic echo cancellation in the VoIP terminal using processing of the far-end signal with the digital adaptive filter in order to obtain the echo estimate that is subtracted from the microphone signal in which the far-end signal, before is is converted to the analog from and passed to the loudspeaker (4), is marked by embedding an encoded digital signature obtained from the signature generator (14) and then detection of the digital signature is performed in the signal collected by the microphone (7) and converted to digital form, depending on the result of the digital signature detection, adaptation of the digital adaptive filter (9) is resumed or stopped. A circuit for acoustic echo cancellation in VoIP terminal contains the digital adaptive filter with the control block situated between the far-end speech signal path and the near-end speech signal path, and the double-talk detector (11) that comprises the signature generator (14) connected by the signature encoder (15).
    Type: Application
    Filed: November 18, 2013
    Publication date: May 15, 2014
    Inventors: Andrzej Czyzewski, Andrzej Ciarkowski
  • Publication number: 20130033592
    Abstract: The manner of measuring the location of user's eyesight fixation point on the computer screen surface based on illuminating the eye surface, monitoring the eye with a camera and analyzing light reflecting from the pupil surface, and the method of valuation of objects on the surface of a computer monitor screen, especially key words for the needs of a web browser user, based on monitoring the eye by means of a video camera during successive light sources on and offs which are located in the axis of a video camera and in the corners of a computer monitor and/or nearby, and recording the constellations of reflections from the surface of the apple of the eye in the video camera image and processing the image by the computer and software.
    Type: Application
    Filed: July 25, 2012
    Publication date: February 7, 2013
    Inventors: Andrzej CZYZEWSKI, Bozena Kostek, Rafal Rybacki
  • Publication number: 20120026276
    Abstract: The manner of measuring the location of user's eyesight fixation point on the computer screen surface based on illuminating the eye surface, monitoring the eye with a camera and analysing light reflecting from the pupil surface is characterized by the fact that sources of illumination are installed in the camera axis, and in corners of computer monitor and/or somewhere near them. This light is an infrared light and depending on features characteristic for the eyes of the user, sources of illumination are turned on or turned off in sequence or jointly, and then, constellations of reflections from pupil's surface are recorded in camera image, whereas the camera image is transferred to undergo processing by the computer and by software.
    Type: Application
    Filed: July 27, 2011
    Publication date: February 2, 2012
    Inventors: Andrzej Czyzewski, Bozena Kostek, Rafal Rybacki
  • Publication number: 20110002458
    Abstract: A method of acoustic echo cancellation in the VoIP terminal using processing of the far-end signal with the digital adaptive filter in order to obtain the echo estimate that is subtracted from the microphone signal in which the far-end signal, before it is converted to the analog form and passed to the loudspeaker (4), is marked by embedding an encoded digital signature obtained from the signature generator (14) and then detection of the digital signature is performed in the signal collected by the microphone (7) and converted to digital form, depending on the result of the digital signature detection, adaptation of the digital adaptive filter (9) is resumed or stopped.
    Type: Application
    Filed: June 30, 2008
    Publication date: January 6, 2011
    Inventors: Andrzej Czyzewski, Grzegorz Szwoch