Patent attributes
An object surface is imaged by an imaging unit (11) and, based on the imaging information by the imaging unit (11), the information corresponding to the object is read out and recognized to identify the object, as an object identification code indicating the information set corresponding to the object stored in the storage unit (14) and the information for specifying the information in the information set corresponding to the object are matched to a position on the object surface by an imaging unit (12) and a controller (13). In this manner, the knowledge stored in the information system can be freely accessed without producing break points, if the knowledge is to be used.