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Automatic text scrolling on a display device

  • US 8,767,014 B2
  • Filed: 07/28/2011
  • Issued: 07/01/2014
  • Est. Priority Date: 07/22/2011
  • Status: Active Grant
First Claim
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1. A head-mounted display device, comprising:

  • a control circuit;

    a microdisplay responsive to the control circuit, the microdisplay projects augmented reality images including text to an eye of a user; and

    a sensor associated with the control circuit, the sensor tracks a gaze direction of the user, the control circuit, responsive to the sensor, controls the microdisplay to advance the text based on the gaze direction of the user, determines a reading speed of the user based on changes in the gaze direction of the user over time, the changes comprise saccades in which the gaze direction of the user moves along a line of the text and a return sweep saccade in which the gaze direction moves to a beginning of a next line of the text, and controls the microdisplay to advance the text based on the reading speed of the user.

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