Document management apparatus and document management method, and storage medium storing program
AssigneeFuji Xerox Co., Ltd.
InventorsOsamu Nakamura, Mitsuru Aonuma
Life of this patent
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Abstract
A document management apparatus includes a hash generator that generates a hash value based on digital document data stored in a database, a communication unit that inputs time information, and a microfilm writer that performs processing to record a converted document data, converted to image data based on the digital document data, on a microfilm, and record a document ID as identification information of the converted document data recorded on the microfilm, the hash value, and the time information, on the microfilm.
Claims15
A document management apparatus comprising:
- a hash generator that generates a hash value based on digital document data stored in a database;
- a communication unit that inputs time information;
- a microfilm writer that performs processing to record a converted document data, converted to image data based on the digital document data, on a microfilm, and record a document ID as identification information of the converted document data recorded on the microfilm, the hash value, and the time information, on the microfilm;
- and
- a verification unit that verifies that the time information and the hash value have been digitally signed before the microfilm writer records the converted document data on the microfilm, wherein the document ID includes identification information for accessing the digital document data stored in the database.
A storage medium readable by a computer, the storage medium storing a computer program of instructions executable by the computer to perform a function for document management processing on the computer, the function comprising:
- generating a hash value based on digital document data stored in a database;
- inputting time information;
- performing processing to record a converted document data, converted to image data based on the digital document data, on a microfilm, and record a document ID as identification information of the converted document data recorded on the microfilm, the hash value, and the time information, on the microfilm;
- and
- verifying that the time information and the hash value have been digitally signed before the converted document data is recorded on the microfilm, wherein the document ID includes identification information for accessing the digital document data stored in the database.
A document management method comprising:
- generating a hash value based on digital document data stored in a database;
- inputting time information;
- performing processing to record a converted document data, converted to image data based on the digital document data, on a microfilm, and record a document ID as identification information of the converted document data recorded on the microfilm, the hash value, and the time information, on the microfilm;
- and
- verifying that the time information and the hash value have been digitally signed before the converted document data is recorded on the microfilm, wherein the document ID includes identification information for accessing the digital document data stored in the database, and wherein a processor performs each of the above steps.
Dependencies are inferred from the claim text.