Patents by Inventor Derek John Hummerston

Derek John Hummerston 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).

  • Programmable converter having an automatic channel sequencing mode
    Patent number: 6795000
    Abstract: A counter circuit is provided which is particularly suitable for controlling cyclical events. The counter consists of a chain of logic elements 160, 167, 164 which sequentially pass a ‘1’ along the chain in response to a clock signal. Each element is also responsive to a respective select signal and, if selected, behaves like a latch, whereas if unselected it behaves as if it were not there.
    Type: Grant
    Filed: October 18, 2001
    Date of Patent: September 21, 2004
    Assignee: Analog Devices, Inc.
    Inventors: Derek John Hummerston, Nicola Mary O'Byrne, Michael A. Byrne