METHOD OF GENERATING ACTIVATION CODE FOR RADIO FREQUENCY IDENTIFICATION TAG

• US 20090153329A1
• Filed: 10/15/2008
• Published: 06/18/2009
• Est. Priority Date: 12/17/2007
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: PYO, Cheol Sig, CHAE, Jong-Suk, LEE, Heyung Sub, CHOI, Su Na, KIM, Hyunseok, SEONG, Nak Seon
• Granted Patent: US 8,519,827 B2
• Time in Patent Office: Days
• US Class Current: 340/572.100
• CPC Class Codes: G06K 7/0008 General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
• CPC Class Codes: G06K 7/10108 interrogating only those RFIDs that fulfill a predetermined requirement, e.g. selecting all RFIDs having the same speed and moving in a cloud like fashion, e.g. on the same train; interrogating only RFIDs having a certain predetermined temperature, e.g. in the same fridge, another possibility being the active ignoring of a group of tags that fulfill a predetermined requirement, equivalent to the Boolean NOT operation
• CPC Class Codes: G06K 7/10297 arrangements for handling protocols designed for non-contact record carriers such as RFIDs NFCs, e.g. ISO/IEC 14443 and 18092 cryptographic protocols H04L9/00; network security protocols H04L63/00; real-time communication protocols in data switching networks H04L65/00; network protocols for data switching network services H04L67/00
• CPC Class Codes: G08B 13/2417 having a radio frequency identification chip

Abstract

Disclosed is a method of generating an activation code of a Radio Frequency Identification (RFID) tag including calculating K satisfying a condition that N is set to exceed 2^k-1 and to be equal to or less than 2^k, when classifying N number of objects through a plurality of RFID tags; and classifying the N number of objects by recording a code corresponding to each of the N number of objects in a K-bit region in an activation code of each RFID tag.

Claims

1. A method of generating an activation code (AC) of a Radio Frequency Identification (RFID) tag comprising:

calculating a K satisfying a condition that N is set to exceed 2^k-1 and to be equal to or less than 2^k, when classifying N number of objects through a plurality of RFID tags; and

classifying the N number of objects by recording a code corresponding to each of the N number of objects in a K-bit region in an AC of each RFID tag.

2. The method of claim 1, wherein a length of the activation code is between one bit and 96 bits.

3. The method of claim 1, wherein the classifying comprises:

generating N number of K-bit binary number codes respectively corresponding to the N number of objects intended to be classified; and

recording each of the generated K-bit binary number codes in the AC of each RFID.

4. The method of claim 1, wherein the classifying comprises:

generating N number of binary number codes respectively corresponding to the N number of objects intended to be classified, when classifying the N number of objects through at least one piece of depth information; and

recording each of the generated binary number codes in the AC of each RFID tag,

wherein the binary number code is embodied as a binary number code a number of bits of which is equal to or less than K-bit.

5. The method of claim 1, further comprising:

recording each of the codes recorded in the AC of each RFID in an activation mask included in an activation command of an RFID reader corresponding to each RFID tag.

6. The method of claim 1, wherein the RFID tag is a tag with a battery.