Patent ID: 8233769

Claim:
A content data processing device comprising: a stability score computing unit to compute a stability score corresponding to stability of an image for each frame, based on image data of each frame making up content data; and a playing segment selecting unit to select a playing segment from said content data based on the stability score computed with the stability score computing unit, wherein said stability score computing unit: detects a segment wherein an intra-frame difference is smaller than a first threshold, sets the segment thereof as a stabile image segment in the event the segment thereof is longer than a predetermined segment length, computes a first stability score of said stable image segment based on an average value of subtraction results obtained by subtracting said intra-frame difference from said first threshold; and computes a second stability score based on an average value of subtraction results obtained by subtracting said intra-frame difference from said second threshold which is greater than said first threshold, at each predetermined period.