Patent ID: 8487983

Claim:
A viewing area adjustment device, comprising: an image pickup unit capable of shooting a forward direction of a stereoscopic video display device capable of displaying a stereoscopic video; a viewer information detector configured to detect the number of viewers and positions of the viewers by a video shot by the image pickup unit; a viewing area adjustment policy determining unit configured to select any one of a plurality of viewing area adjustment policies each showing a policy for adjusting a viewing area where the stereoscopic video is viewable, based on the number of viewers detected by the viewer information detector; a viewing area information computing unit configured to compute an adjustment amount for the viewing area, based on the viewing area adjustment policy determining unit and on the position of each viewer detected by the viewer information detector; a viewing area adjusting unit configured to adjust the viewing area, based on the adjustment amount for the viewing area computed by the viewing area information computing unit; a video type detector configured to detect a video type of input video data, wherein the video type detector detects, as the video type, whether the input video data is three-dimensional video data including parallax information or depth information, or two-dimensional video data not including the parallax information and the depth information, and when the number of viewers detected by the viewer information detector is one or less and the video type detector detects the three-dimensional video data, the viewing area adjustment policy determining unit selects a viewing area adjustment policy for displaying the stereoscopic video by supplying, to each pixel of the stereoscopic video display device, two-parallax data generated using the parallax information or the depth information included in the input video data, while when the number of viewers detected by the viewer information detector is two or more, the viewing area adjustment policy determining unit selects a viewing area adjustment policy for displaying the stereoscopic video by supplying multi-parallax data of three or more parallaxes to each pixel of the stereoscopic video display device regardless of whether the input video data is the three-dimensional video data or the two-dimensional video data.