Patents by Inventor Frank Sciabica, Jr.

Frank Sciabica, Jr. 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).

  • Hook switch status glitch filter
    Patent number: 6704416
    Abstract: A line card circuit using a pair of comparators such that the output of the first comparator is coupled to an input of the second comparator through an RC circuit. The RC circuit is tuned such that short transients, such as false pulses and false off hook indications passed by the first comparator are not passed by the RC circuit to the second comparator. The input of the first comparator is coupled to the subscriber line and the output of the second comparator is coupled to the switch's hook status detection circuitry.
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: March 9, 2004
    Assignee: AG Communication Systems Corporation
    Inventor: Frank Sciabica, Jr.