Patent ID: 9153207
Filing Date: 2015-10-06
Classification: G09G

Abstract:
1. A method comprising: detecting a scrolling area within digital content comprising a plurality of frames, wherein the detection includes a comparison between a current frame and a previous frame to determine at least one location within the current frame in which pixel values change in relation to a corresponding location of the previous frame; searching for a reference line of pixels within the scrolling area of the previous frame; in response to finding the reference line, searching for a corresponding matching line of pixels in the current frame that matches the reference line; in response to finding the corresponding matching line of pixels in the current frame, determining a degree of scrolling of content in the scrolling area of the current frame in relation to the previous frame, the degree of scrolling comprising information relating to a change in location of the matching line of the current frame in relation to the reference line of the previous frame; and verifying the degree of scrolling by comparing at least one line of pixels in the current frame that is offset a distance from the matching line of the current frame with a line of pixels in the previous frame that is offset the same distance from the reference line of the previous frame.