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:
May. 15, 2007
Filed:
Sep. 02, 2004
Kenji Sakamoto, Tokyo, JP;
Goro Kunito, Tokyo, JP;
Kenichi Yamazaki, Tokyo, JP;
NTT DoCoMo, Inc., Tokyo, JP;
Abstract
In a tag reader/writeraccording to the present invention, first, a temporary ID receiverreceives a temporary ID unit of temporary IDs of RFID tags, anddetected by another tag reader/writer, and stores them into a temporary ID storage DB. When the tag reader/writerdetects RFID tags, andwithin a communication area of its own, a temporary ID acquirerthereof acquires temporary IDs of those RFID tags and stores them into the temporary ID storage DB. Thereafter, the tag reader/writermakes a temporary ID comparatorcompare temporary ID units stored, to specify a temporary ID corresponding to a difference between them, based on the result of the comparison. When the temporary ID is a decrease, it is determined to be a lost article, and a message of the lost article is sent. When the temporary ID is an increase, it is determined to be a newly purchased article, and related advertisement information is provided.