RFID system preventing recognition error and communication method thereof
First Claim
1. A radio frequency identification (RFID) tag comprising:
- 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, wherein when information stored in the first tag is not readable, the second tag is activated and externally transmits information and when information stored in the first tag is readable, the second tag is deactivated and does not externally transmit information.
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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 1o 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.
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Citations
10 Claims
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1. A radio frequency identification (RFID) tag comprising:
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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, wherein when information stored in the first tag is not readable, the second tag is activated and externally transmits information and when information stored in the first tag is readable, the second tag is deactivated and does not externally transmit information. - 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 in a state where the RFID tag having first and second tags is attached to a product, the communication method comprising:
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(a) when the product reaches a first position, the first RFID reader attempting to form a communication connection with the first tag, and when communication connection is successful, the first RFID reader reading information stored in the first tag; and (b) when the product reaches a second position, the second RFID reader attempting to form a communication connection with the second tag, and when 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 in a state where the RFID tag having first and second tags is attached to a product, the communication method comprising:
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(a) when the product reaches a first position, the RFID reader attempting to form a communication connection with the first tag, and when communication connection is successful, the RFID reader reading information stored in the first tag; and (b) when the product reaches a second position, the RFID reader changing a communication type to attempt to form a communication connection with the second tag, and when communication connection is successful, the RFID reader communicating with the second tag and generating an alarm. - View Dependent Claims (9, 10)
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Specification