| 摘要 |
<p>Disclosed are a video display system comprising a management server in which are stored a plurality of image files comprising a plurality of image data, a portable information terminal, and a video display device. The management server, upon receiving a display request for a predetermined image file from a portable information terminal for which an authorization for a user has succeeded, issues a one-time URL linking to the first image data within the image file, and thereafter, upon receiving an update request for the image data from the portable information terminal, updates the image data linked to the one-time URL. The video display device periodically accesses the one-time URL, and only when there is a difference between the acquired image data and the image data currently displayed, updates the image data currently displayed to the acquired image data.</p> |
