Patents by Inventor William Ballachino

William Ballachino 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).

  • Bidirectional parallel data port having multiple data transfer rates, master, and slave operation modes, and selective data transfer termination
    Patent number: 5710939
    Abstract: A bidirectional parallel signal interface for providing a parallel data interface between a computer and an external peripheral device includes an interface circuit with command registers for communicating commands and data, a first-in, first-out (FIFO) memory for communicating data between the computer and the peripheral device, and host and slave state machines for receiving commands from the command registers and in accordance therewith controlling communication of data between the FIFO and peripheral device and communicating control signals to and from the peripheral device. The communication of data between the FIFO and peripheral device is effected in accordance with data communication rates which are controlled by the host and slave state machines in accordance with the commands from the command registers.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: January 20, 1998
    Assignee: National Semiconductor Corporation
    Inventors: William Ballachino, James Andrew Colgan, Franco Iacobelli