Radio frequency identification (RFID) device with a response stop command

• US 7,710,272 B2
• Filed: 08/22/2008
• Issued: 05/04/2010
• Est. Priority Date: 03/28/2005
• Status: Expired due to Fees

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Fukushima, Shinichiro, Moritani, Masumi, Takami, Yutaka
• Primary Examiner(s): TWEEL JR, JOHN ALEXANDER
• Application Number:
  US12/196,768
• Publication Number:
  US 20080316034A1
• Time in Patent Office: 620 Days
• Field of Search: 340/572.1, 340/572.3, 340/572.8, 340/10.5
• US Class Current: 340/572.1
• CPC Class Codes: G06K 19/0723 the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
• CPC Class Codes: G06K 7/0008 General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer

Abstract

An RFID device is capable of stopping and restarting a response via a response stop command. The device is capable of initializing a part of or the whole of internal data including a response restart set data storage portion. The device is capable of using command data from an external communication equipment to look up response restart data at the restart of a response, deciding a data storage area and content that may be initialized when the restart is possible, and rewriting a data storage portion.

Claims

1. A radio frequency identification (RFID) chip, comprising:

a communication control portion for receiving a command and data from external communication equipment;

a processing control portion for processing the command and data received in the communication control portion; and

a data storage portion for storing data, wherein;

the command is a predetermined command associated with stopping the operation of the RFID chip, and

upon receipt of predetermined data together with the command, the processing control portion is operable to change a content of the data storage portion, wherein the content corresponds to the predetermined data received.

2. The RFID chip according to claim 1, wherein only a part of the content of the data storage portion is changed.

3. The RFID chip according to claim 1, wherein the data storage portion includes an area where data is changeable and an area where data is unchangeable.

4. The RFID chip according to claim 1, wherein data stored in the data storage portion includes an ID.