Patent ID: 8074164
Filing Date: 2011-12-06
Classification: H04N

Abstract:
1. A document management device, connected to a plurality of reader terminals via a network, for managing a document circulated to a reader in accordance with a circulation tree and additional information added to the document by the reader, the circulation tree indicating a circulation order of a plurality of readers, the device comprising: a document circulation unit operable to send 0 a circulation information management unit operable to set the circulation tree indicating the circulation order of the plurality of readers, and to set a processing attribute with respect to each reader which is used to select one of a plurality of documents as a difference detection generation document, the difference detection generation document being an object of difference detection when extracting additional information; a recognition unit operable to recognize n an additional information management unit operable to store the n wherein the circulation information management unit sets either authorization or comment as the processing attribute, when the processing attribute is authorization, the 0 when the processing attribute is comment, the (n−1)