Patents by Inventor Clifford E. Russell

Clifford E. Russell 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 device with display brightness control
    Patent number: 9330606
    Abstract: Automatic display brightness adjustments may be made by an electronic device based on ambient light sensor data. Proximity sensor data from a light-based proximity sensor, from nearby capacitive sensor electrodes in a touch screen, or from other proximity sensing components may be used to determine whether the ambient light sensor is being shadowed by a hand or other external object. Ambient light sensor data associated with blocked sensor conditions can be suppressed. A transient event filter may be used to remove spikes from ambient light sensor data. A display brightness baseline may be adaptively adjusted. Short changes in ambient light level may result in corresponding momentary adjustments to display brightness. Longer changes in ambient light level may be associated with persistent changes in the display brightness baseline.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: May 3, 2016
    Assignee: Apple Inc.
    Inventors: Ulrich Barnhoefer, Venu M. Duggineni, Clifford E. Russell
  • Electronic Device With Display Brightness Control
    Publication number: 20130328842
    Abstract: Automatic display brightness adjustments may be made by an electronic device based on ambient light sensor data. Proximity sensor data from a light-based proximity sensor, from nearby capacitive sensor electrodes in a touch screen, or from other proximity sensing components may be used to determine whether the ambient light sensor is being shadowed by a hand or other external object. Ambient light sensor data associated with blocked sensor conditions can be suppressed. A transient event filter may be used to remove spikes from ambient light sensor data. A display brightness baseline may be adaptively adjusted. Short changes in ambient light level may result in corresponding momentary adjustments to display brightness. Longer changes in ambient light level may be associated with persistent changes in the display brightness baseline.
    Type: Application
    Filed: September 27, 2012
    Publication date: December 12, 2013
    Applicant: Apple Inc.
    Inventors: Ulrich Barnhoefer, Venu M. Duggineni, Clifford E. Russell