Patents by Inventor Craig R. Larson

Craig R. Larson 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).

  • Videophone for simultaneous audio and video communication via a standard telephone line
    Patent number: 5821987
    Abstract: A videophone includes a video camera for transducing and digitizing images at a station and connected to a video processor for compressing and encoding the digitized images into video data. The videophone also includes an audio transducer and digitizer connected to an audio processor synchronized with the video processor for compressing and encoding digitized sound. The video and audio processors are connected to a communication controller for formatting and transmitting the video data bundled with the audio data via a standard bidirectional (full duplex) telephone line in the form of a twisted pair.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: October 13, 1998
    Inventor: Craig R. Larson
  • Videophone for simultaneous audio and video communication via a standard telephone line
    Patent number: 5541640
    Abstract: A videophone includes a video camera for transducing and digitizing images at a station and connected to a video processor for compressing and encoding the digitized images into video data and an audio transducer and digitizer connected to an audio processor synchronized with the video processor for compressing and encoding digitized sound. The video and audio processors are connected to a communication controller for formatting and transmitting the video data bundled with the audio data via a standard bidirectional (full duplex) telephone line in the form of a twisted pair. The communication controller can also receive and then unformat and unbundle audio and video data, and the video processor and audio processor can decode and decompress the received video and audio data, and the station further includes a display connected to the video processor for reproducing images and an electroacoustic transducer connected to the audio processor for reproducing sounds transmitted by another station.
    Type: Grant
    Filed: April 19, 1995
    Date of Patent: July 30, 1996
    Inventor: Craig R. Larson