Patents by Inventor Victor Kravtchenko

Victor Kravtchenko 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).

  • Telephone apparatus with a continuously-connected DC-isolated modem
    Patent number: 5504807
    Abstract: Telephone apparatus including a loudspeaker and a microphone, a speech transmission network that on the one side is coupled to the loudspeaker and the microphone and on the other side can be coupled to the telephone lines, and a modem having an input and an output, wherein the modem for AC-currents is directly coupled to the speech transmission network and for DC-currents is isolated from the speech transmission network. By these features it is possible to provide a telephone apparatus having the possibility of data-communication with as little as possible additional components, so that the telephone apparatus can be very low priced.
    Type: Grant
    Filed: October 13, 1993
    Date of Patent: April 2, 1996
    Assignee: U.S. Philips Corporation
    Inventors: Peter Sattler, Victor Kravtchenko, Christian Krexner