Verification of singulated RFID tags by RFID readers
First Claim
Patent Images
1. A method for reading a tag, comprising:
- (a) transmitting a radio frequency (RF) signal to provide power to at least one tag;
(b) singulating a powered tag;
(c) waiting a delay time period;
(d) transmitting a read verify command to the singulated tag;
(e) receiving a response to the read verify command; and
(f) verifying that the response to the read verify command was received from the singulated tag.
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Abstract
Methods, systems, and apparatuses for verifying singulated tags are described. A radio frequency (RF) signal is transmitted to provide power to at least one tag. A powered tag is singulated. A delay time period is waited. A read verify command is transmitted to the singulated tag. A response is received to the read verify command. The response to the read verify command is verified to determine whether it was received from the singulated tag.
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Citations
23 Claims
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1. A method for reading a tag, comprising:
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(a) transmitting a radio frequency (RF) signal to provide power to at least one tag; (b) singulating a powered tag; (c) waiting a delay time period; (d) transmitting a read verify command to the singulated tag; (e) receiving a response to the read verify command; and (f) verifying that the response to the read verify command was received from the singulated tag. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for reading a tag, comprising:
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means for transmitting a radio frequency (RF) signal to provide power to at least one tag; means for singulating a powered tag; means for waiting a delay time period; means for transmitting a read verify command to the singulated tag; means for receiving a response to the read verify command; and means for verifying that the response to the read verify command was received from the singulated tag.
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11. A radio frequency identification (RFID) reader, comprising:
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an antenna; and logic that includes a tag power module, a tag singulate module, and a read verify module; wherein the tag power module is configured to transmit a radio frequency (RF) signal from the antenna to provide power to at least one tag; wherein the tag singulate module is configured to transmit a singulate command from the antenna to singulate a powered tag; wherein the read verify module is configured to transmit a read verify command to the singulated tag after a delay time period; and wherein the read verify module is further configured to verify that a response received to the read verify command was received from the singulated tag. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for a radio frequency identification (RFID) reader system, comprising:
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(a) transmitting a radio frequency (RF) signal from a first reader to provide power to at least one tag; (b) transmitting a first singulation command from the first reader; (c) transmitting a second singulation command from a second reader; (d) receiving an identification number from a tag powered by the RF signal at the first reader and the second reader in response to the first singulation command; (e) transmitting a read verify command to the tag from the first reader after a delay time period; (f) transmitting a read verify command to the tag from the second reader; (g) receiving a response to the read verify command at the first reader; and (h) verifying at the first reader that the response to the read verify command was received from the tag powered by the RF signal. - View Dependent Claims (21, 22, 23)
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Specification