METHOD AND APPARATUS PERTAINING TO PRECONFIGURING IN FACILITATING THE READING OF RFID TAGS

• US 20140327524A1
• Filed: 05/02/2013
• Published: 11/06/2014
• Est. Priority Date: 05/02/2013
• Status: Abandoned Application

• Current Assignee: Walmart Apollo, LLC (WalMart Inc.)
• Original Assignee: Wal-Mart Stores Texas LLC (WalMart Inc.)
• Inventors: Jones, Nicholaus A., King, Wallace Carrell, Galvin, Michael Jeffrey
• Application Number:
  US13/875,608
• Publication Number:
  US 20140327524A1
• Time in Patent Office: Days
• US Class Current: 340/10.42
• CPC Class Codes: G06K 7/10108 interrogating only those RFIDs that fulfill a predetermined requirement, e.g. selecting all RFIDs having the same speed and moving in a cloud like fashion, e.g. on the same train; interrogating only RFIDs having a certain predetermined temperature, e.g. in the same fridge, another possibility being the active ignoring of a group of tags that fulfill a predetermined requirement, equivalent to the Boolean NOT operation
• CPC Class Codes: G06K 7/10386 the interrogation device being of the portable or hand-handheld type, e.g. incorporated in ubiquitous hand-held devices such as PDA or mobile phone, or in the form of a portable dedicated RFID reader

Abstract

Some embodiments provide methods to facilitate reading a plurality of radio frequency identification (RFID) tags, comprising: receiving, within a RFID tag reader, identification information corresponding to one or more RFID tags of interest; interrogating a plurality of RFID tags while the RFID tag reader is not in communication with a remote processor; receiving multiple corresponding RFID tag responses from the RFID tags; evaluating at the RFID tag reader each of the multiple RFID tag responses relative to the identification information; identifying, as a function of the evaluating, a plurality of RFID tags of interest; and producing, at the RFID tag reader, end user-perceivable indications corresponding to at least one RFID tag response from each of the RFID tags of interest to thereby inform an end user with respect to a corresponding reading state as regards to the plurality of RFID tags.

Claims

1. A method to facilitate reading a plurality of radio frequency identification (RFID) tags, the method comprising:

receiving, within a RFID tag reader and from a remote processor that is separate from the RFID tag reader, identification information corresponding to one or more RFID tags of interest, wherein the identification information distinguishes the one or more RFID tags of interest from other RFID tags that are not currently of interest;

interrogating, after having received the identification information, a plurality of RFID tags while the RFID tag reader is remote from and not in communication with the remote processor;

receiving at the RFID tag reader multiple corresponding RFID tag responses from various ones of the plurality of RFID tags;

evaluating locally at the RFID tag reader each of the multiple RFID tag responses relative to at least the identification information;

identifying, as a function of the evaluating, a plurality of RFID tags that are RFID tags of interest; and

producing, locally at the RFID tag reader and in response to identifying the plurality of RFID tags of interest, end user-perceivable indications corresponding to at least one RFID tag response from each of the plurality of RFID tags of interest to thereby inform an end user of the RFID tag reader with respect to a corresponding reading state as regards to the plurality of RFID tags.

2. The method of claim 1, wherein the evaluating locally at the RFID tag reader each of the multiple RFID tag responses comprises comparing information in each of the multiple RFID tag responses with one or more identifiers specified within the identification information and stored on the RFID tag reader;

and

wherein the identifying the plurality of RFID tags of interest comprises identifying an RFID tag as an RFID tag of interest when an identifier specified within a corresponding one of the multiple RFID tag responses corresponds to previously-established identifiers specified within the identification information received at the RFID tag reader from the remote processor.

3. The method of claim 2, wherein the evaluating locally at the RFID tag reader each of the multiple RFID tag responses further comprises:

assessing each of the multiple RFID tag responses to determine whether an RFID tag response corresponds to an already-read RFID tag; and

discarding those RFID tag responses that correspond to an already-read RFID tag such that an end user-perceivable indication is not produced for the discarded RFID tag responses.

4. The method of claim 2, wherein the evaluating locally at the RFID tag reader each of the multiple RFID tag responses comprises:

determining whether an RFID tag response correlates with an identifier for a first module of items of a plurality of modules of items; and

identifying the plurality of RFID tags of interest when the corresponding RFID tag responses correlate with the identifier of the first module of items and the one or more identifiers correspond to the previously-established identifiers defined within the identification information.

5. The method of claim 1, further comprising:

storing locally within the RFID tag reader at least a portion of information from each of the plurality of RFID tag responses received from RFID tags of interest.

6. The method of claim 5, further comprising:

detecting, at the RFID tag reader and after having interrogated the plurality of RFID tags, that the RFID tag reader is in communication with the remote processor; and

transmitting to the remote processor at least the portion of the information from each of the plurality of RFID tag responses received from the RFID tags of interest.

7. The method of claim 5, further comprising:

storing locally within the RFID tag reader at least a portion of information from an RFID tag response received from an RFID tag that is not of interest.

8. The method of claim 7, further comprising:

determining whether sufficient memory on the RFID tag reader is available to store at least the portion of the information from the RFID tag response received from the RFID tag that is not of interest;

freeing up memory on the RFID tag reader in response to determining that there is not sufficient memory to store at least the portion of the information from the RFID tag response from the RFID tag that is not of interest; and

storing locally within the RFID tag reader over the freed up memory at least the portion of the information from the RFID tag response received from the RFID tag that is not of interest.

9. The method of claim 5, further comprising:

storing locally within the RFID tag reader at least a portion of information from each of a plurality of RFID tag responses received from each of a plurality of RFID tags that are not of interest and that have not already previously responded to the interrogation.

10. An apparatus to facilitate reading a plurality of radio frequency identification (RFID) tags, the apparatus comprising:

a memory configured to store identification information received from a remote processor that is separate and remote from the apparatus, wherein the identification information corresponds to one or more RFID tags of interest and distinguishes the one or more RFID tags of interest from other RFID tags that are not currently of interest;

an RFID tag reader configured to interrogate a plurality of RFID tags while the RFID tag reader is remote from and not in communication with the remote processor, and to receive multiple corresponding RFID tag responses from various ones of the plurality of RFID tags;

a control circuit operatively coupled with the RFID tag reader and the memory, wherein the control circuit is configured to receive the multiple corresponding RFID tag responses from the RFID tag reader;

locally evaluate each of the multiple RFID tag responses relative to at least the identification information;

identify, as a function of the evaluation, a plurality of RFID tags are RFID tags of interest; and

produce, in response to identifying the plurality of RFID tags of interest, end user-perceivable indication signals corresponding to RFID tag responses from each of the plurality of RFID tags of interest; and

an annunciator operably coupled with the control circuit, wherein the annunciator is configured to receive the end user-perceivable indication signals from the control circuit and to generate end user-perceivable indications corresponding to the RFID tag responses from each of the plurality of RFID tags of interest as a function of the end user-perceivable indication signals to thereby inform an end user of the apparatus with respect to a completeness level of the reading of the plurality of RFID tags.

11. The apparatus of claim 10, wherein the control circuit, in evaluating each of the multiple RFID tag responses, is further configured to compare information in each of the multiple RFID tag responses with one or more identifiers defined within the identification information and stored in the memory, and to identify an RFID tag as an RFID tag of interest when an identifier specified within a corresponding one of the multiple RFID tag responses corresponds to previously-established identifiers defined within the identification information received from the remote processor.

12. The apparatus of claim 11, wherein the control circuit, in evaluating each of the multiple RFID tag responses, is further configured to:

determine whether an RFID tag response correlates with an identifier for a first module of items of a plurality of modules of items; and

identify the plurality of RFID tags of interest when the corresponding RFID tag responses correlate with the identifier of the first module of items and the one or more identifiers correspond to the previously-established identifiers defined within the identification information.

13. The apparatus of claim 11, wherein the control circuit, in evaluating each of the multiple RFID tag responses, is further configured to assess each of the multiple RFID tag responses to determine whether an RFID tag response corresponds to an already-read RFID tag;

and discard those RFID tag responses that correspond to an already-read RFID tag such that an end user-perceivable indication is not produced for the discarded RFID tag responses.

14. The apparatus of claim 10, further comprising:

a wireless transceiver operably coupled with the control circuit;

wherein the control circuit is further configured to detect, after having interrogated the plurality of RFID tags, that the control circuit is in communication with the remote processor, and to cause the wireless transceiver to transmit at least the portion of the information from each of the plurality of RFID tag responses received from the RFID tags of interest to the remote processor.

15. The apparatus of claim 10, wherein the control circuit is further configured to direct at least a portion of information from each of the plurality of RFID tag responses received from RFID tags of interest to be stored in the memory, and to direct at least a portion of information from RFID tag responses received from RFID tags that is not of interest to be stored in the memory.

16. The apparatus of claim 10, wherein the control circuit is further configured to determine whether a sufficient amount of the memory is available to store at least a portion of information from the RFID tag response received from RFID tag that are not of interest, free up a portion of the memory in response to determining that there is not sufficient amount of the memory to store at least the portion of the information from the RFID tag response from the RFID tag that is not of interest, and direct at least the portion of the information from the RFID tag response received from the RFID tag that is not of interest to be stored in the memory over the freed up memory.

17. The apparatus of claim 10, further comprising:

a housing, wherein the memory, the RFID tag reader, the control circuit and the annunciator are contained within the housing.

18. The apparatus of claim 17, wherein the housing comprises a portable, handheld housing.

19. A method to facilitate reading a plurality of radio frequency identification (RFID) tags, the method comprising:

interrogating, from a handheld wireless RFID tag reader, a plurality of RFID tags;

receiving at the RFID tag reader multiple corresponding RFID tag responses from various ones of the plurality of RFID tags;

determining whether the RFID tag reader is in range with and in communication with a remote processor that is separate from the RFID tag reader;

evaluating, locally at the RFID tag reader when the RFID tag reader is not within communication with the remote processor, each of the multiple RFID tag responses relative to at least identification information received at the RFID tag reader from the remote processor and locally stored at the RFID tag reader, wherein the identification information corresponds to one or more RFID tags of interest and distinguishes the one or more RFID tags of interest from other RFID tags that are not currently of interest;

comparing, locally at the RFID tag reader when the RFID tag reader is not within communication with the remote processor, information in each of the multiple RFID tag responses with one or more identifiers defined within identification information received at the RFID tag reader from the remote processor and locally stored at the RFID tag reader;

identifying, locally at the RFID tag reader when the RFID tag reader is not within communication with the remote processor and in response to the comparing, one or more of the plurality of RFID tag responses as RFID tags of interest when the one or more identifiers correspond to previously-established identifiers defined within the identification information received at the RFID tag reader from the remote processor;

determining, locally at the RFID tag reader when the RFID tag reader is not within communication with the remote processor and as a function of the evaluating, whether a currently-read RFID tag is an RFID tag of interest;

storing locally within the RFID tag reader at least a portion of information from each of the plurality of RFID tag responses received from RFID tags of interest; and

producing, locally at the RFID tag reader when the RFID tag reader is not within communication with the remote processor and in response to determining that one or more currently-read RFID tags are RFID tags of interest, a end user-perceivable indication corresponding to the RFID tag responses from the plurality of RFID tags of interest to thereby inform an end user of the RFID tag reader with respect to a corresponding reading state as regards to the plurality of RFID tags.

20. The method of claim 19, further comprising:

while the RFID tag reader is in communication with the remote processor and while receiving the responses;

transmitting at least a portion of at least some of the responses to the remote processor;

receiving from the remote processor a plurality of messages corresponding to RFID tags of interest as identified by the remote processor; and

providing at the RFID tag reader the plurality of end user-perceivable indications corresponding to the responses from the one or more of the plurality of RFID tags as a function of the messages received from the remote processor.