Patents by Inventor Philip A. Parker

Philip A. Parker 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).

  • Patent number: 6140804
    Abstract: A converter is provided for stepping-down a DC power input to produce a DC power output of lower voltage. The converter includes a regulating unit (3), and, in series with it, an input resistor (4). In use, the resistor (4) is separated from the regulating unit (3) and is mounted on a body of a piece of machinery, so that heat produced within the resistor is transmitted to that machinery, and does not interfere with the operation of the regulating unit (3). The regulating unit (3) employs a linear conversion circuit which produces a stable (DC) output but, unlike conventional DC-DC converters, generates substantially no stray electromagnetic fields.
    Type: Grant
    Filed: October 21, 1999
    Date of Patent: October 31, 2000
    Assignee: Autotronics Engineering International Limited
    Inventor: Keith Philip Parker
  • Patent number: 6031767
    Abstract: An I/O interface for an integrated circuit (IC) is described that has a reduced number of I/O pins dedicated to providing control signals to or status information from the IC. In one embodiment, the IC comprises a plurality of input pins connected to logic for receiving and processing input data. The input pins have an input bandwidth greater than the logic's processing rate. If data and control signals are multiplexed onto the same input pin, the excess input pin bandwidth may used to transfer control signals into a plurality of latches within the IC. The I/O interface outputs a select signal that designates when an external device should drive the input pins with either data or control signals. In a specific embodiment, the logic comprises a parallel to serial converter and the control signal select conversion speed or encoding options. In another embodiment, the IC comprises a plurality of output pins connected to the output of a selector.
    Type: Grant
    Filed: September 18, 1996
    Date of Patent: February 29, 2000
    Assignee: International Business Machines Corporation
    Inventors: Brian J. Schuh, Christopher Philip Parker, Vinay V. Shah
  • Patent number: 6014019
    Abstract: A converter is provided for stepping-down a DC power input to produce a DC power output of lower voltage. The converter includes a regulating unit (3), and in series with it an input resistor (4). In use, the resistor (4) is separated from the regulating unit (3) and is mounted on a body of a piece of machinery, so that heat produced within the resistor is transmitted to that machinery, and does not interfere with the operation of the regulating unit (3). The regulating unit (3) employs a linear conversion circuit which produces a stable (DC) output but, unlike conventional DC-DC converters, generates substantially no stray electromagnetic fields.
    Type: Grant
    Filed: August 8, 1997
    Date of Patent: January 11, 2000
    Assignee: Autotronics Engineering International Ltd
    Inventor: Keith Philip Parker
  • Patent number: 4495844
    Abstract: A specimen table advance mechanism comprising a parallelogram linkage for a rotary microtome in which the effects of friction sticking are largely eliminated from the articulation points of the linkage by use of strip hinges.
    Type: Grant
    Filed: September 17, 1981
    Date of Patent: January 29, 1985
    Inventors: Brian L. Jackson, Philip Parker