Successive memory writes in an RFID interrogator

Patent metadata

Field	Value
Publication number	US-10073994-B2
Application number	US-201514882212-A
Country	US
Kind code	B2
Filing date	Oct 13, 2015
Priority date	Oct 13, 2014
Publication date	Sep 11, 2018
Grant date	Sep 11, 2018

Abstract

A high speed tabletop and industrial printer is disclosed with integrated high speed RFID encoding and verification at the same time. The industrial printer simultaneously prints on and electronically encodes/verifies RFID labels, tags, and/or stickers attached to a continuous web. The industrial printer comprises a lighted sensor array for indexing the printing to the RFID tags; and a cutter powered from the industrial printer for cutting the web that the RFID tags are disposed on. The industrial printer comprises two RFID reader/writers that are individually controlled. Specifically, one of the RFID reader/writers comprises the ability to electronically encode the RFID tags while the web is moving; and the second RFID reader/writer uses an additional RFID module and antenna on the printer for verifying the data encoded to the RFID tags. The printer provides for successive writes to various memory blocks and optimizes the communication sequence between the interrogator and tag.

First claim

What is claimed is:

1. A process for optimizing the command sequence between an RFID interrogator and an RFID tag based on foreknowledge of the communication sequence between an RFID interrogator and an RFID tag, comprising the steps of:
removing query command via the RFID interrogator;
removing ack command via the RFID interrogator;
issuing a Req_RN command via the RFID interrogator;
issuing a handle New RN 16 via the RFID tag;
responding with an access command via the RFID Interrogator; and
responding with status via the RFID tag.

2. The process of claim 1 , wherein removal of the query command and ack command reduces overall cycle time of the communication sequence.

3. The process of claim 1 , wherein the status is either success or error failure for the command sequence.

4. The process of claim 3 , wherein the access command is at least one of Req-RN, read, write, lock, kill, blockwrite, or blockerase.

5. The process of claim 4 , wherein the steps are repeated before issuing another access command.

6. The process of claim 1 , where the individual commands comprise Write EPC (electronic product code), Write Access, Password Lock, and Read EPC.

7. The process of claim 6 , where the individual commands may all be processed at the once by the RFID interrogator.

8. The process of claim 1 , where the RFID tag is a RFID Gent 2 Tag.

9. The process of claim 1 , where implementation of the high level command stack optimization operation eliminates unnecessary overhead between the RFID printer and the RFID interrogator.

10. The process of claim 1 , implemented within a high speed tabletop and industrial printer integrated with high speed RFID encoding and simultaneous verification.

Assignees

• Avery Dennison Retail Information Services Llc

Inventors

• Duckett Jeanne F
• Neuhard Lance D
• Wimmers David J
• Wirrig Richard D
• Williams Larri B
• Makley James A
• Watson Jan M
• Evans Andrew R

Classifications

• G06K19/0725

  the arrangement being a circuit for emulating a plurality of record carriers, e.g. a single RFID tag capable of representing itself to a reader as a cloud of RFID tags · CPC title

• B41M5/0094

  by thermal printing · CPC title

• G06K7/00

  Methods or arrangements for sensing record carriers, {e.g. for reading patterns} (methods or arrangements for marking the record carrier in digital fashion G06K1/00; pattern recognition G06F18/00; arrangements for image or video recognition or understanding G06V10/00; character recognition, recognising digital ink or document-oriented image-based pattern recognition G06V30/00) · CPC title

• B41J15/00

  Devices or arrangements {of selective printing mechanisms, e.g. ink-jet printers or thermal printers,} specially adapted for supporting or handling copy material in continuous form, e.g. webs · CPC title

• B41M5/0052

  by thermal printing · CPC title