Described is a technology by which topics corresponding to web pages are used in relevance ranking of those pages. This image creating apparatus can provide an optical shutter of an image recording apparatus and a reflection or transmitting type image display device. The playlist characterization is based on acoustic analysis data of one or more songs in the playlist. Furthermore, the length between the point A and a point B of the gauge main body 48 at the time of the CS is obtained based on the image data. The ends of the bristles are coupled to a metal bar that connects to a connecting rod.