Channel selection method for reading tag information, tag selection apparatus of radio frequency identification (RFID) reader, and RFID reader
First Claim
1. A channel selection apparatus of a first radio frequency identification (RFID) reader within a wireless communication portable terminal, the channel selection apparatus comprising:
- a channel selection unit which selects a channel to read tag information stored in an RFID tag; and
a channel determination unit which determines whether the selected channel is used by a second RFID reader, and if the channel determination unit determines that the selected channel is not used by the second RFID reader, determines the selected channel to be a channel to read the tag information.
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Accused Products
Abstract
A channel selection method for reading tag information, a channel selection apparatus of an RFID reader applying the same, and an RFID reader. A channel selection apparatus of a radio frequency identification (RFID) reader equipped within a wireless communication portable terminal, includes a channel selection unit which selects a channel to read tag information stored in an RFID tag, and a channel determination unit which, when determining that the selected channel is not used by another RFID reader, determines the selected channel to be a channel to read the tag information. Accordingly, when a plurality of RFID readers reads out the tag information from the RFID tag almost at the same time, the interference among them can be avoided.
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Citations
44 Claims
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1. A channel selection apparatus of a first radio frequency identification (RFID) reader within a wireless communication portable terminal, the channel selection apparatus comprising:
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a channel selection unit which selects a channel to read tag information stored in an RFID tag; and
a channel determination unit which determines whether the selected channel is used by a second RFID reader, and if the channel determination unit determines that the selected channel is not used by the second RFID reader, determines the selected channel to be a channel to read the tag information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A channel selection method of a radio frequency identification (RFID) reader within a wireless communication portable terminal, the channel selection method comprising:
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selecting a channel to read tag information stored in an RFID tag; and
when determining that the selected channel is not used by a second RFID reader, determining the selected channel to be a channel to read the tag information. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. A channel selection apparatus of a first RFID reader within a wireless communication portable terminal, wherein the channel selection apparatus selects a channel to read tag information of an RFID tag which resides outside, based on channel request times measured by using time information provided from the wireless communication portable terminal.
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44. An RFID reader comprising:
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a channel selection unit which selects a channel to read tag information of an RFID tag; and
a channel determination unit which, when determining that the selected channel is not used by another RFID reader, determines the selected channel to be a channel to read the tag information.
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Specification