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:
Jun. 22, 2010
Filed:
Dec. 27, 2005
Kyung-ho Park, Suwon-si, KR;
Woo-shik Kang, Suwon-si, KR;
Young-hwan Jung, Seoul, KR;
Sun-shin an, Seoul, KR;
Seon-wook Kim, Namyangju-si, KR;
Kyung-ho Park, Suwon-si, KR;
Woo-shik Kang, Suwon-si, KR;
Young-hwan Jung, Seoul, KR;
Sun-shin An, Seoul, KR;
Seon-wook Kim, Namyangju-si, KR;
Samsung Electro-Mechanics Co., Ltd, Suwon-si, KR;
Abstract
Method for rapidly detecting identifier (ID) of tags, by radio frequency identification (RFID) reader in communication system that includes RFID reader and at least two tags communicating with RFID reader, is provided. RFID reader generates a prefix when IDs contained in at least two messages received collide with each other, prefix including a first colliding bit, which is set to '0' or '1', from high-order bits and non-colliding high-order bits. RFID reader sends a first message containing information that requests transmission of an assigned ID in a preset transmission period when the bits of the generated prefix match bits corresponding to the prefix, in the assigned ID. Tags receive a first message that contains a prefix including at least one bit, and sends a second message containing an assigned ID during a preset transmission period when the bits of the prefix match bits corresponding to the prefix, in assigned ID.