| 摘要 |
A picture image file device for storing original documents such as drawings as a picture image file, characterized in that said device is provided with a picture image storing section for storing in a picture image file a predetermined number of picture image units obtained by dividing the picture image file into the predetermined number and a signal processing section in which when another original document, the contents of which have been changed partially from the first-mentioned original document, is inputted, the changed original document is divided into the predetermined number of picture image units and the divisions of the changed original document are compared with the picture image unit so that only the parts of the original document having changed contents are stored as new picture image units in the picture image storing section.
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