Patents by Inventor William S. Jocobs

William S. Jocobs 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).

  • System for extending ISA bus without using dedicated device driver software by using E.sup.2 P.sup.2 interface which provides multiplexed bus signal through standard parallel port connector
    Patent number: 5619659
    Abstract: A bus interface system for expanding the I/O capability of a portable computer utilizes a parallel port connector with master interface circuitry connected to the internal ISA I/O bus of the portable computer and driving a 25-conductor Centronics-type cable as an intermediate bus. The master interlace circuitry is device-driver-transparent, and multiplexes address data, and control information over a byte-wide avenue of the intermediate bus according to premapped state translation tables. In a preferred embodiment a single peripheral I/O device comprising a slave circuitry may be connected to the 25-pin port, and the slave circuitry demultiplexes the intermediate bus states, providing a synthesized sub-set of ISA states to drive the peripheral device. In another embodiment a docking box comprises a bus with multiple I/O ports, such as a network port, a COM serial port, and additional floppy and hard disk drives.
    Type: Grant
    Filed: June 30, 1995
    Date of Patent: April 8, 1997
    Assignee: Elonex IP Holdings Ltd.
    Inventors: Dan Kikinis, William J. Seiler, Pascal Dornier, William S. Jocobs
  • CPU-independent and device-driver transparent system for translating a computer's internal bus signals onto an intermediate bus and further translating onto an expansion bus
    Patent number: 5457785
    Abstract: A bus interface system for expanding the I/O capability of a portable computer utilizes a parallel port connector with master interface circuitry connected to the internal ISA I/O bus of the portable computer and driving a 25-conductor Centronics-type cable as an intermediate bus. The master interface circuitry is device-driver-transparent, and multiplexes address, data, and control information over a byte-wide avenue of the intermediate bus according to premapped state translation tables. In a preferred embodiment a single peripheral I/O device comprising a slave circuitry may be connected to the 25-pin port, and the slave circuitry demultiplexes the intermediate bus states, providing a synthesized sub-set of ISA states to drive the peripheral device. In another embodiment a docking box comprises a bus with multiple I/O ports, such as a network port, a COM serial port, and additional floppy and hard disk drives.
    Type: Grant
    Filed: February 10, 1993
    Date of Patent: October 10, 1995
    Assignee: Elonex Technologies, Inc.
    Inventors: Dan Kikinis, William J. Seiler, Pascal Dornier, William S. Jocobs