System for multi-standard RFID tags
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Accused Products
Abstract
A reader for a radio frequency identification system capable of simultaneously reading tags operating a multiple frequencies. The reader includes a radio frequency module for each operating frequency of the tags. The radio frequency modules are coupled to a bus which is connected to an interrogator control module. Each of the radio frequency modules receives the return signal from the tags at the associated operating frequency and converts the return signal into a pulse sequence. The interrogator control module locks to and decodes the pulse sequence according to the protocol associated with the tag type.
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Citations
38 Claims
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1-17. -17. (canceled)
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18. A radio identification interrogator associated with a plurality of protocols including a first protocol and a second protocol different from the first protocol, comprising:
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a first radio frequency (RF) module being associated with its own frequency band and having a receiver and a frequency source, the frequency source of the first RF module having a frequency within the frequency band for the first RF module, the receiver of the first RF module configured to receive a return signal associated with the frequency band of the first RF module and associated with the first protocol from the plurality of protocols;
a second radio frequency (RF) module being associated with its own frequency band and having a receiver and a frequency source, the frequency source of the second RF module having a frequency within the frequency band for the second RF module and different from the frequency of the frequency source of the first RF module, the receiver of the second RF module configured to receive a return signal associated with the frequency band of the second RF module and associated with the second protocol from the plurality of protocols; and
a decoder coupled to the receiver of the radio frequency module, the decoder having a first output channel and a second output channel, the first output channel being associated with the first protocol from the plurality of protocols, the second output channel being associated with the second protocol from the plurality of protocols. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26)
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27. An apparatus, comprising:
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a radio frequency module having a transmitter and a receiver, the transmitter being configured to send an output signal, the receiver being configured to receive a return signal associated with the output signal and associated with a first tag parameter value; and
a decoder coupled to the receiver of the radio frequency module, the decoder having a first output channel associated with the first tag parameter value and a second output channel associated with a second tag parameter value different from the first tag parameter value, the first output channel being configured to decode the return signal based on the first tag parameter value and a cyclical redundancy check, the second output channel being configured to decode a signal associated with the second tag parameter value and a cyclical redundancy check. - View Dependent Claims (28, 29, 30, 31, 32)
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33. A radio identification interrogator associated with a plurality of protocols including a first protocol and a second protocol different from the first protocol, comprising:
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a first radio frequency (RF) module being associated with its own frequency band and having a receiver, the receiver of the first RF module configured to receive a return signal associated with the frequency band of the first RF module and associated with the first protocol from the plurality of protocols, the frequency band of the first RF module is within one from group of a first frequency band having an upper limit of 200 KHz, a second frequency band substantially at 13.56 MHz, a third frequency band substantially at 2.45 GHz, and a fourth frequency band having a lower limit of 458 MHz and excluding the third frequency band, and;
a second radio frequency (RF) module being associated with its own frequency band and having a receiver, the receiver of the second RF module configured to receive a return signal associated with the frequency band of the second RF module and associated with the second protocol from the plurality of protocols, the frequency band of the second RF module is within a remaining one from the group of the first frequency band between 100 KHz and 200 KHz, the second frequency band substantially at 13.56 MHz, the third frequency band substantially at 2.45 GHz, and the fourth frequency band having the lower limit of 458 MHz and excluding the third frequency band; and
a decoder coupled to the receiver of the radio frequency module, the decoder having a first output channel and a second output channel, the first output channel being associated with the first protocol from the plurality of protocols, the second output channel being associated with the second protocol from the plurality of protocols. - View Dependent Claims (34, 35, 36, 37, 38)
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Specification