Patents by Inventor David Edwin Johnson

David Edwin Johnson 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).

  • Method to reduce the pin count on an integrated circuit and associated apparatus
    Patent number: 7683661
    Abstract: A method and associated apparatus for enabling a plurality of functions of an integrated circuit to be controlled on a single pin of the circuit. The method includes the steps of providing each of the functions with a designated periodically recurring sampling instance during which time the status of a signal on the single pin will be considered to relate to the function designated to that sampling instance, and controlling each of the functions according to the status of the signal on the single pin during each of the plurality of functions' corresponding designated sampling instance.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: March 23, 2010
    Assignee: Wolfson Microelectronics plc
    Inventor: David Edwin Johnson
  • METHOD TO REDUCE THE PIN COUNT ON AN INTEGRATED CIRCUIT AND ASSOCIATED APPARATUS
    Publication number: 20090058497
    Abstract: A method and associated apparatus for enabling a plurality of functions of an integrated circuit to be controlled on a single pin of the circuit. The method includes the steps of providing each of the functions with a designated periodically recurring sampling instance during which time the status of a signal on the single pin will be considered to relate to the function designated to that sampling instance, and controlling each of the functions according to the status of the signal on the single pin during each of the plurality of functions' corresponding designated sampling instance.
    Type: Application
    Filed: August 29, 2008
    Publication date: March 5, 2009
    Inventor: David Edwin Johnson