Wireless scanners for maintaining inventory

• US 10,489,741 B1
• Filed: 06/13/2016
• Issued: 11/26/2019
• Est. Priority Date: 06/13/2016
• Status: Active Grant

• Current Assignee: Google LLC (Alphabet Inc.)
• Original Assignee: Google LLC (Alphabet Inc.)
• Inventors: Nigro, Lorenzo, Lee, Joyce, Miftakhov, Valery, Bookman, Colin
• Primary Examiner(s): Mai, Thien T
• Application Number:
  US15/181,381
• Time in Patent Office: 1,261 Days
• CPC Class Codes: G06K 17/0022 arrangements or provisious for transferring data to distant stations, e.g. from a sensing device "transfer between computer elements G06F13/00 "; data-transmission H04L
• CPC Class Codes: G06K 19/07758 arrangements for adhering the record carrier to further objects or living beings, functioning as an identification tag
• CPC Class Codes: G06K 7/10366 the interrogation device being adapted for miscellaneous applications
• CPC Class Codes: G06K 7/10475 arrangements to facilitate interaction with further interrogation devices, e.g. such that at least two interrogation devices may function and cooperate in a network of such devices
• CPC Class Codes: G06Q 10/087 Inventory or stock management, e.g. order filling, procurement or balancing against orders

Abstract

A system for maintaining inventory in a retail store may comprise multiple wireless readers. The multiple wireless readers may be distributed throughout the retail store so that every location within a coverage area of the system is within boundaries of at least two wireless readers. Each of the multiple wireless readers may be configured to send polling requests to tags within the coverage area, read responses from the tags, the responses identifying the respective tags, and send identities of the tags to a remote server.

Claims

1. A wireless reader comprising:

at least one transceiver configured to transmit and receive wireless signals;

at least one processor configured to execute instructions stored in memory and generate and process signals transmitted and received by the at least one transceiver; and

at least one memory comprising instructions stored thereon that, when executed by the at least one processor, are configured to cause the wireless reader to at least;

send multiple polling requests to multiple tags in a first cycle, the polling requests in the first cycle each identifying a different bucket number within a range of bucket numbers and instructing tags with a first state and the identified bucket number to respond with their respective identifier and switch to a second state opposite from the first state; and

after sending the multiple polling requests in the first cycle, send multiple polling requests to the multiple tags in a second cycle, the polling requests in the second cycle each identifying a different bucket number within the range of bucket numbers and instructing tags with the second state and the identified bucket number to respond with their respective identifier and switch to the first state opposite from the second state.

2. The wireless reader of claim 1, wherein the wireless reader includes a radio frequency identification (RFID) reader.

3. The wireless reader of claim 1, wherein the wireless reader is mounted on a lighting fixture and is configured to draw power from a same power source as the lighting fixture.

4. The system of claim 1, wherein the wireless reader is configured to serially send polling requests with all possible bucket numbers.

5. The system of claim 1, wherein the at least one memory comprises further instructions stored thereon that, when executed by the at least one processor, are configured to cause the wireless reader to send the respective identifier of the tags and a location of the wireless reader to a remote computing server.

6. The system of claim 1, wherein the at least one memory comprises further instructions stored thereon that, when executed by the at least one processor, are configured to cause the wireless reader to send the multiple polling requests to the multiple tags in the first cycle in response to receiving a command from a smartphone.

7. The system of claim 6, wherein the multiple polling requests in the first cycle identifying one or more specific tags identified in the command.

8. The system of claim 6, wherein the at least one memory comprises further instructions stored thereon that, when executed by the at least one processor, are configured to cause the wireless reader to send one or more specific tags identified in the command and a location of the wireless reader to a remote computing server.

9. The system of claim 8, wherein the at least one memory comprises further instructions stored thereon that, when executed by the at least one processor, are configured to cause the wireless reader to send one or more specific tags identified in the command and received signal strength to the remote computing server, the remote computing server determining the location of the one or more specific tags based on the received signal strength.

10. The system of claim 1, wherein the at least one memory comprises further instructions stored thereon that, when executed by the at least one processor, are configured to cause the wireless reader to generate an inventory report based on the identifier received from each respective tag.

11. The system of claim 10, wherein the at least one memory comprises further instructions stored thereon that, when executed by the at least one processor, are configured to cause the wireless reader to send the generated inventory report to a remote computing server.