RFID system preventing recognition error and communication method thereof
First Claim
1. A radio frequency identification (RFID) tag comprising packaging having sealed within:
- a first tag for performing communication of a first communication type with an RFID reader; and
a second tag connected to the first tag and suitable for performing communication of a different communication type from the first communication type of the first tag with the RFID reader, wherein, when the first tag does not successfully communicate with the RFID reader, the first tag automatically activates the second tag, and, when the first tag successfully communicates with the RFID reader, the first tag automatically leaves the second tag deactivated and the second tag is unable to communicate with the RFID reader.
3 Assignments
0 Petitions
Accused Products
Abstract
A radio frequency identification (RFID) tag is provided that prevents a recognition error of the RFID tag due to the occurrence of a shadow region. The RFID tag includes a first tag performing communication with an RFID reader and a second tag connected to the first tag and suitable for use with a different communication type from the first tag. Thus, when information stored in the first tag can not be read, the second tag is activated and externally transmits information and when information stored in the first tag can be read, the second tag is deactivated and does not externally transmit information. A communication method of an RFID system including an RFID reader communicating with an RFID tag is also provided.
22 Citations
10 Claims
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1. A radio frequency identification (RFID) tag comprising packaging having sealed within:
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a first tag for performing communication of a first communication type with an RFID reader; and a second tag connected to the first tag and suitable for performing communication of a different communication type from the first communication type of the first tag with the RFID reader, wherein, when the first tag does not successfully communicate with the RFID reader, the first tag automatically activates the second tag, and, when the first tag successfully communicates with the RFID reader, the first tag automatically leaves the second tag deactivated and the second tag is unable to communicate with the RFID reader. - View Dependent Claims (2, 3, 4)
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5. A communication method of a radio frequency identification (RFID) system comprising first and second RFID readers communicating with an RFID tag attached to a product and having enclosed within first and second tags, the communication method comprising:
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(a) when the product reaches a first position, the first RFID reader attempting to form a first communication connection with the first tag storing information, when the communication connection is successful, the first RFID reader reading the information stored in the first tag and the first tag leaving the second tag deactivated, and, when the first communication connection is not successful, the first tag automatically activating the second tag; and (b) when the product reaches a second position, the second RFID reader attempting to form a second communication connection with the second tag, and, when the second communication connection is successful, the second RFID reader communicating with the second tag and allowing an alarm device to generate an alarm. - View Dependent Claims (6, 7)
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8. A communication method of a radio frequency identification (RFID) system comprising an RFID reader communicating with an RFID tag attached to a product and having sealed within first and second tags, the communication method comprising:
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(a) when the product reaches a first position, the RFID reader attempting to form a first communication connection with the first tag storing first information, and, when the first communication connection is successful, the RFID reader reading the first information stored in the first tag and the first tag not changing the second tag from a deactivated state to an activated state; and (b) when the product reaches a second position, the RFID reader changing a communication type to attempt to form a second communication connection with the second tag storing second information that is at least different from the first information, and, when the second communication connection is successful, the RFID reader reading the second information stored in the second tag and generating an alarm. - View Dependent Claims (9, 10)
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Specification