Patents by Inventor Heimo L{umlaut over (a)}hdem{umlaut over (a)}ki

Heimo L{umlaut over (a)}hdem{umlaut over (a)}ki 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).

  • Remote test of a subscriber connection in a system implementing a wireless subscriber connection
    Patent number: 6169883
    Abstract: The invention concerns a system implementing a wireless subscriber connection and comprising base stations and wireless terminals. The terminal contains functions which may be used for testing the terminal, the subscriber terminal equipment and the connection between them in response to a message which is received via a radio path and which starts the test functions, and which transmit the test results to a radio link. The terminal contains a subscriber line interface circuit (SLIC) with which the subscriber terminal equipment may be connected to the terminal. A connecting line may be used for connecting. Means for generating an alternating voltage may be connected in parallel with the input of the subscriber line interface circuit (SLIC) and the connecting line.
    Type: Grant
    Filed: March 6, 1997
    Date of Patent: January 2, 2001
    Assignee: Nokia Telecommunications Oy
    Inventors: Markku Vimpari, Pekka V{umlaut over (a)}yrynen, Heimo L{umlaut over (a)}hdem{umlaut over (a)}ki