The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 02, 2008
Filed:
Apr. 16, 2004
Jian Zhang, Shanghai, CN;
Ling Shao, Beijing, CN;
Yun Zhang Pei, Beijing, CN;
Dong Xie, Beijing, CN;
Jian Zhang, Shanghai, CN;
Ling Shao, Beijing, CN;
Yun Zhang Pei, Beijing, CN;
Dong Xie, Beijing, CN;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method for generating hierarchical keys of digital assets, the digital assets are arranged as at least one tree structure for management, a root node of the tree structure represents the complete set of the digital assets, other group nodes represents sub-sets in each level of the digital assets respectively, and the nodes in the lowest level are leaf nodes, said method includes: generating the key of the root node; and starting with the key of the root node, using the key of a father node to compute level by level the keys of its child nodes according to a predetermined function, through to leaf nodes.