Patents by Inventor David Gerrard Laing

David Gerrard Laing 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).

  • Writable memory
    Patent number: 6956784
    Abstract: A memory is provided in which each memory cell can be in a first state or a second state, and those cells which should be in the first state always correctly power up into that state whereas cells which should be in the second state may power up incorrectly. A counting arrangement is provided to count the number of cells in either of the states and to compare this with a predetermined number. If the numbers do not match, a memory reset is performed. The memory cells can be constructed from a single fusible element thereby saving space whilst also consuming substantially zero power following power up.
    Type: Grant
    Filed: August 3, 2004
    Date of Patent: October 18, 2005
    Assignee: Analog Devices, Inc.
    Inventor: David Gerrard Laing
  • Serial interface for an analog to digital converter and a converter including such an interface
    Patent number: 6703961
    Abstract: An analog to digital converter is provided which has a compact serial interface utilising only four pins to define chained and non chained modes of operation. Further more the interface also allows the converter to be configured to indicate immediately that the conversion has been completed. Another variant of the invention enables an analog to digital converter to be provided having only a 3 pin serial interface.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: March 9, 2004
    Assignee: Analog Devices, Inc.
    Inventors: Michael Mueck, David Gerrard Laing, Alain Valentin Guery
  • Serial interface for an analog to digital converter and a converter including such an interface
    Publication number: 20030197635
    Abstract: An analog to digital converter is provided which has a compact serial interface utilising only four pins to define chained and non chained modes of operation. Further more the interface also allows the converter to be configured to indicate immediately that the conversion has been completed. Another variant of the invention enables an analog to digital converter to be provided having only a 3 pin serial interface.
    Type: Application
    Filed: April 23, 2002
    Publication date: October 23, 2003
    Inventors: Michael Mueck, David Gerrard Laing, Alain Valentin Guery