Patents by Inventor Earl R. Wingrove

Earl R. Wingrove 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).

  • Electronic devices including indicator control circuits and related methods of controlling indicators
    Patent number: 6647278
    Abstract: An electronic device includes an indicator that generates an indication of an event responsive to an indicator control signal from an indicator control circuit coupled between a processor and the indicator. The processor generates an indicator off-time value and an indicator on-time value from the processor. The indicator control circuit includes an off-time register, an on-time register, and an indicator control circuit. The off-time register stores the off-time value generated by a processor, and the on-time register stores the on-time value generated by the processor. The indicator control signal generator alternatingly enables and disables the indicator control signal based on the time values stored in the registers.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: November 11, 2003
    Assignee: Ericsson Inc.
    Inventors: John W. Mitten, Earl R. Wingrove
  • Electronic devices including indicator control circuits and related methods of controlling indicators
    Patent number: 6445935
    Abstract: An electronic device includes an indicator that generates an indication of an event responsive to an indicator control signal from an indicator control circuit coupled between a processor and the indicator. The processor generates an indicator off-time value and an indicator on-time value when an indication is desired, and the indicator control circuit receives the indicator off-time value and the indictor on-time value from the processor. More particularly, the indicator control circuit includes an off-time register, an on-time register, and an indicator control circuit. The off-time register stores the off-time value generated by the processor, and the on-time register stores the on-time value generated by the processor.
    Type: Grant
    Filed: October 5, 1998
    Date of Patent: September 3, 2002
    Assignee: Ericsson Inc.
    Inventors: John W. Mitten, Earl R. Wingrove
  • Electronic devices including indicator control circuits and related methods of controlling indicators
    Publication number: 20020077146
    Abstract: An electronic device includes an indicator that generates an indication of an event responsive to an indicator control signal from an indicator control circuit coupled between a processor and the indicator. The processor generates an indicator off-time value and an indicator on-time value when an indication is desired, and the indicator control circuit receives the indicator off-time value and the indicator on-time value from the processor. More particularly, the indicator control circuit includes an off-time register, an on-time register, and an indicator control circuit. The off-time register stores the off-time value generated by the processor, and the on-time register stores the on-time value generated by the processor.
    Type: Application
    Filed: February 8, 2002
    Publication date: June 20, 2002
    Inventors: John W. Mitten, Earl R. Wingrove
  • Automatic gray scale tracking system for cathode ray display devices
    Patent number: 4340904
    Abstract: Apparatus is provided for achieving and maintaining gray scale tracking in a multibeam, cathode ray display device, despite fluctuations in the electrical characteristics of the display device and of video amplifiers driving the device. Tracking is accomplished by measuring the actual beam currents produced during the applications of test signals to the amplifiers and automatically adjusting the biases and gains of the amplifiers in response to differences between the measured beam currents and predefined beam currents which should be produced. The invention can also be used to automatically stabilize the beam current in a single beam cathode ray display device.
    Type: Grant
    Filed: December 24, 1980
    Date of Patent: July 20, 1982
    Assignee: General Electric Company
    Inventor: Earl R. Wingrove, Jr.