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. 11, 2012
Filed:
Nov. 11, 2009
Hao Lei, Beijing, CN;
YE Tian, Beijing, CN;
KE Zeng, Beijing, CN;
Liming Wang, Beijing, CN;
Toshikazu Fukushima, Beijing, CN;
Hao Lei, Beijing, CN;
Ye Tian, Beijing, CN;
Ke Zeng, Beijing, CN;
Liming Wang, Beijing, CN;
Toshikazu Fukushima, Beijing, CN;
NEC (China) Co., Ltd., Beijing, CN;
Abstract
The present invention provides a method and apparatus for generating index as well as a search method and a search apparatus. Index entry comprises at least a search item identifier corresponding to a search item, one or a plurality of index items generated from one or plural pieces of search information, and an accumulator for the search information. The accumulator is generated by accumulating the search information, or accumulating ciphertext of information containing the search information, or accumulating data mapped from information containing the search information. At the time of searching, the index items and the accumulator are provided to a searcher. The searcher extracts search information from the index items and checks whether the extracted search information is complete by using the accumulator. In one embodiment, the accumulator is incorporated in an encrypted inverted index.