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Methods and Systems for Reduced Flickering and Blur

  • US 20090295706A1
  • Filed: 05/29/2008
  • Published: 12/03/2009
  • Est. Priority Date: 05/29/2008
  • Status: Active Grant
First Claim
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1. A method for determining a display backlight modulation process, said method comprising:

  • a) performing motion detection on at least a portion of a first frame of a video sequence to determine whether substantial motion occurs in said portion of said first frame;

    b) performing motion detection on a corresponding portion of a second frame of said sequence to determine whether substantial motion occurs in said corresponding portion of said second frame;

    c) using a first pulse-width-modulated (PWM) backlight modulation screen comprising at least one fixed-width pulse at a first width and a first spacing for said first frame;

    d) if substantial motion is detected in one of said first frame and said second frame, but not the other of said first frame and said second frame, using a transition backlight modulation screen for displaying said second frame, wherein said transition backlight modulation screen comprises a pulse with a pulse width that is different than said first width.

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