Patents by Inventor Stephen E. Morrow

Stephen E. Morrow 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).

  • Digital modem
    Patent number: 5033062
    Abstract: A digital modem is connected to a CBX in a network. Data is transmitted to the digital modem in a data field of synchronous serial data frames. The digital modem converts the data into a digital signal corresponding to a time sampled analog signal representing the data. The converted digital signal is communicated to a digital to analog converter for transmission on a telephone line. Analog signals received on the telephone line are digitized, and then converted to data in the digital modem.
    Type: Grant
    Filed: May 30, 1989
    Date of Patent: July 16, 1991
    Inventors: Stephen E. Morrow, Karl F. Osterlund, Lawrence E. Rosen, Philippe Thirion