Selecting RFID tags using memory-mapped parameters
AssigneeImpinj, Inc.
InventorsVincent Moretti, William Colleran, Christopher Diorio
Life of this patent
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Abstract
Radio frequency identification (RFID) tags are associated with sensors. Sensor data from a sensor is internally associated with a mask address, such as that of a memory. The tags receive commands by a reader, which can include selection commands. The selection commands can be for selecting according to the sensor data, by invoking the mask address. The selection commands can be further associated with a mask value, calling for setting a selection flag only by those tags whose sensor data meets a selection condition relative to the mask value. Therefore the reader can select a sub-population of tags from a larger population based on sensor data.
Claims37
A radio frequency identification (RFID) tag, comprising:
- an antenna that is arranged to receive a modulated wave;
- and
- a processor that is arranged to:
- associate with a mask address sensor data from a sensor associated with the tag;
- decode from the wave at least one command that is associated with the mask address and a mask value;
- and
- set a selection flag responsive to the command depending on whether the mask value matches a portion of the sensor data from the sensor.
A radio frequency identification (RFID) tag, comprising:
- a means for associating with a mask address sensor data from a sensor associated with the tag;
- a means for receiving a modulated wave;
- a means for decoding from the wave at least one command that is associated with the mask address and a mask value;
- and
- a means for setting a selection flag responsive to the command depending on whether the mask value matches a portion of the sensor data.
A method for a radio frequency identification (RFID) tag, comprising:
- associating with a mask address sensor data from a sensor associated with the tag;
- receiving a modulated wave;
- decoding from the wave at least one command that is associated with the mask address and a mask value;
- and
- setting a selection flag responsive to the command depending on whether the mask value matches a portion of the sensor data.
Dependencies are inferred from the claim text.