Patents by Inventor Alberto Irizar Guridi

Alberto Irizar Guridi 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).

  • Inband signal converter, and associated method, for a digital communication system
    Patent number: 5978676
    Abstract: Apparatus, and an associated method, for converting an inband signal, such as a DTMF signal, into a form to permit transmission thereof to a receive station. An inband signal, such as a DTMF signal generated by a wireline device is applied to a digital transmitter, such as a fixed cellular terminal having a digital transceiver. The inband signal is detected and encoded. The inband signal is encoded in a manner to permit its transmission according to an appropriate air interface standard.
    Type: Grant
    Filed: November 15, 1996
    Date of Patent: November 2, 1999
    Assignee: Telefonaktiebolaget L/M Ericsson (publ)
    Inventors: Alberto Irizar Guridi, Jose Javier Janez Gonzalez, Julio Salazar Orive