Abstract: To provide a display apparatus which can use a general purpose projector, has a simple structure, including a hemispherical rear projection screen, a projector for projecting an image to be displayed on the rear projection screen, and a computer system for creating an image projected from the projector and characterized in that the computer system includes a recording medium for storing image data of a plane image, creation device that corrects the image data stored in the recording medium and creating image data of a curved image, and a transmission device to transmit the image data of the curved image created by the creation device to the projector.

Abstract: A presentation system can effectively present an exhibit as an exhibition content to a viewer. According to the present invention, in order to perform an effective presentation in a presentation space, an icon 2 that symbolically represents a presentation subject and has identification information thereof stored in a non-contact IC tag, a presentation table 3, a display apparatus 4 and a content display control apparatus 5 are basically provided, and when the icon is placed on the presentation table, the identification information stored in the tag of the icon is read, and the control apparatus 5 displays a content associated with that information on the display apparatus 4.

Abstract: To provide a display apparatus which can use a general purpose projector, has a simple structure, and can be manufactured at low cost. The invention is a display apparatus including a hemispherical rear projection screen 1, a projector 2 for projecting an image to be displayed on the rear projection screen 1, and a computer system 3 for creating an image projected from the projector 2 and characterized in that the computer system 3 includes a recording medium for storing image data of a plane image, creation means for correcting the image data stored in the recording medium and creating image data of a curved image, and transmission means for transmitting the image data of the curved image created by the creation means to the projector 2.

Abstract: To provide an information processing device, an information processing method, and a medium recording an information processing program that can be operated easily. A solid body that can be held by a user, a measurement section that is provided in the solid body and measures a state of the solid body with respect to three-dimensional space to obtain state information, a recognition section that recognizes a section facing a predetermined direction among a plurality of sections of the solid body based on the state information measured by the measurement section to set the recognized section as a selected section, and an execution section that selects and executes a function corresponding to the selected section among functions associated with a plurality of the sections in advance based on the selected section recognized by the recognition section are included.

Abstract: A presentation system can effectively present an exhibit as an exhibition content to a viewer. According to the present invention, in order to perform an effective presentation in a presentation space, an icon 2 that symbolically represents a presentation subject and has identification information thereof stored in a non-contact IC tag, a presentation table 3, a display apparatus 4 and a content display control apparatus 5 are basically provided, and when the icon is placed on the presentation table, the identification information stored in the tag of the icon is read, and the control apparatus 5 displays a content associated with that information on the display apparatus 4.