Abstract: An information searching apparatus for managing and retrieving document data stored in a storage unit. The storage unit further comprises a managing information storage section for storing document managing information for managing the document data stored. The apparatus sets the document managing information in the managing information storage section in accordance with a type of data managing system and retrieves the stored document data on the basis of the document managing information set in the managing information storage section. Further, the apparatus has a function to change the type of data managing system to a different type of data managing system so that the document data stored are managed and retrieved in accordance with the data managing system changed. The apparatus can effectively manage data such that the document data is managed in accordance with a type of data managing system suitable for a kind of document and a work purpose.

Abstract: An image retrieval system for retrieving a desired micro image from a film in the form of a roll on which partial images obtained by dividing a large image into a plurality of smaller units are recorded in a row in the form of micro images. The system includes a keyboard in which a plurality of keys are arranged in the form of a matrix in correspondence with the partial images; an image display sheet on which the large image is displayed on a reduced scale and which is placed on the keyboard; a retrieval device for retrieving the micro image of the partial image corresponding to a retrieval code inputted through the keyboard; and a projection device for projecting on an enlarged scale the micro image retrieved by the retrieval device. The operator retrieves a corresponding film image by operating a key of the keyboard while confirming a necessary partial image on the image display sheet, and the retrieved film image can be projected on an enlarged scale.