An image inputted from a camera input part 8 or the like is displayed on a display part 6 and converted through an analysis process such as latter recognition of the image in an image analysis part 7 to code data. A check is then made as to whether the code data obtained contains any identification code (or identification symbol or letter) registered in a memory 4, and data subsequent to each identification code is extracted and registered for each item in the data base. When the code data fails to contain identification code or data of each item, a key input part 9 edits the code data. Also, with data without any identification code, designation by cursor is made on display, and the data part is extracted and registered for the corresponding item.