Abstract: By inserting a video relay apparatus 100 between a server 200 and a terminal 400 in a conventional general video distribution system, it is possible to display the video with a high quality by the video distribution system using the communication unit having a limited transmission capacity even if the video cannot be previously stored in the video relay apparatus. The video relay apparatus 100 is provided with a receiving unit 10 for receiving the video, a storing unit 20 for temporarily storing the received video, an area defining unit 60 for dividing the video so as to define the areas, an area classifying unit 70 for classifying the areas defined by the area defining unit 60, a video reconstructing unit 30 for skipping the video or adjusting the quality of the defined area of video by the area defining unit 60 and reconstructing the video based on the classified result by the area classifying unit 70, and a sending unit 40 for sending the reconstructed video by the video reconstructing unit 30.

Abstract: In order to obtain an information retrieval apparatus for performing retrieval from an anchor to be set with respect to a virtual three dimensional space, and to enable retrieval over a wide retrieval range through an easy-to-use user interface, a movement anchor generator unit is provided to generate a movement anchor corresponding to a change in viewpoint information. A three dimensional space generator unit generates not only ordinary objects, but also objects representing movement anchors in three dimensional images. A user selects a virtual object, which is a movement anchor, on an image. Linked data regarding the movement anchor is registered in a linked data storage unit. A retrieval unit can perform retrieval, not only with ordinary objects as anchors, but also through the movement anchor. Any application program execution unit for processing the display of a retrieval result can be used, and a wide range of linked information can be handled.