RFID tag chips and tags capable of backscattering more codes and methods
CAFCFirst Claim
Patent Images
1. An Integrated Circuit (IC) for use with a Radio Frequency Identification (RFID) tag having an antenna, comprising:
- a memory for storing a first code and a second code; and
a processing block for coupling with the antenna and operable to;
cause the first code to be backscattered if a first command is received from an RFID reader;
receive a third command; and
cause to be backscattered responsive to receiving the third command a combination made from at least portions of the first code and the second code, without receiving any commands while the combination is being backscattered.
1 Assignment
1 Petition
Accused Products
Abstract
RFID tags and chips for RFID tags store a first code and a second code in memory. They are capable of backscattering a combination made from at least portions of the first code and the second code, without receiving any commands in the interim. In a number of embodiments, therefore, a separate command does not have to be sent for also reading the second code, thereby saving time in inventorying the tags. Plus, the combination can enable reading tag codes during tag manufacturing that are not otherwise readily available to read in the field.
26 Citations
25 Claims
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1. An Integrated Circuit (IC) for use with a Radio Frequency Identification (RFID) tag having an antenna, comprising:
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a memory for storing a first code and a second code; and a processing block for coupling with the antenna and operable to; cause the first code to be backscattered if a first command is received from an RFID reader; receive a third command; and cause to be backscattered responsive to receiving the third command a combination made from at least portions of the first code and the second code, without receiving any commands while the combination is being backscattered. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for a first Radio Frequency Identification (RFID) tag storing a first code and a second code, and able to backscatter the first code responsive to receiving a first command from an RFID reader, comprising:
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receiving a third command; and backscattering, responsive to receiving the third command, a combination made from at least portions of the first code and the second code, without receiving any commands while the combination is being backscattered. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A Radio Frequency Identification (RFID) tag, comprising:
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an antenna; and a circuit coupled to the antenna, the circuit including; a memory for storing a first code and a second code; and a processing block for coupling with the antenna and operable to; cause the first code to be backscattered if a first command is received from an RFID reader; receive a third command; and cause to be backscattered responsive to receiving the third command a combination made from at least portions of the first code and the second code, without receiving any commands while the combination is being backscattered.
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Specification