| 摘要 |
A network search server for providing a secure document search function, a search method thereof, an image forming device and a network security system for providing the function, and a recording medium thereof are provided to facilitate searching scanned document data by constructing a database with the scanned document data and searching the scanned document data from the database with a keyword. A communicator(110) communicates with at least more than one image forming device through the network. An OCR(Optical Character Recognition) processor(120) extracts text from image data by performing OCR processing for the image data. An indexer(130) generates/stores an index file for at least one of a text extraction time, image forming device user information, and a keyword. A search engine(150) searches the index file matched with at least one of the text extraction time, the image forming device user information, and the keyword from the stored index files, and searches/outputs the text mapped to the searched index file when at least one of the text extraction time, the image forming device user information, and the keyword is received.
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