×

MOTION ENABLED MULTI-FRAME CHALLENGE-RESPONSE TEST

  • US 20110185311A1
  • Filed: 01/27/2010
  • Published: 07/28/2011
  • Est. Priority Date: 01/27/2010
  • Status: Active Grant
First Claim
Patent Images

1. A method for generating a multi-frame image rendering of a challenge-response test on a display, comprising:

  • identifying a pattern defined by graphical elements;

    identifying a display region on the display for rendering an entry object from the multi-frame image of the challenge-response test;

    defining a foreground sampling window, the foreground sampling window capturing the graphical elements of the pattern along a first path across the pattern, and the foreground sampling window having a non-patterned area defined by the entry object to be rendered;

    defining a background sampling window, the background sampling window capturing the graphical elements of the pattern along a second path across the pattern; and

    presenting the background sampling window and the foreground sampling window at the display region of the display, the foreground sampling window being overlaid on the background sampling window at the display region, such that the entry object of the challenge-response test is discernable from the pattern during a period of time when multiple frames are rendered.

View all claims
  • 9 Assignments
Timeline View
Assignment View
    ×
    ×