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:
Mar. 09, 2010
Filed:
Mar. 31, 2005
Koji Chida, Yokohama, JP;
Kunio Kobayashi, Yokohama, JP;
Hikaru Morita, Yokohama, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
Numbers 1, 2, . . . , M are assigned to bidding prices from the minimum to maximum values Vto V. For a bidding value Veach user-generates two sequences of information s={s, s, . . . , s} and t={t, t, . . . , t} such that s=t, . . . , s=t, s≠t, . . . , s≠t, then secretly sends the two sequences of information sand tto quantitative competition apparatusesA andB, respectively, and sends hash values H=h(s) and H=h(t) of the two sequences of information sand tand a hash value h(V∥r) containing an intended value Vto a bulletin board apparatus. The quantitative competition apparatusesA andB extract w-th elements sfrom respective sequences sto sand w-th elements tfrom respective sequences tto t, then create a concatenation Seqof N elements sand a concatenation Seqof N elements t, then compare them using a one-way function without revealing their values, and, if they differ, deciding that the intended value Vequal to or smaller than a value Vis present, and determines the minimum value by changing w.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile