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

• US 7,425,897 B2
• Filed: 03/27/2006
• Issued: 09/16/2008
• 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:
  US11/389,537
• Publication Number:
  US 20060226986A1
• Time in Patent Office: 904 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) device, comprising:

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

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

a data storage portion for storing data,

wherein, said command is a predetermined command associated with a response stop, and when a predetermined data is received, contents of said data storage portion are changed by operations of said processing control portion.

2. The RFID device according to claim 1, wherein only a part of contents of said data storage portion is changed.

3. The RFID device according to claim 1, wherein said data storage portion comprises a changeable area and an unchangeable area.

4. The RFID device according to claim 1, wherein data stored in said data storage portion includes an identification (ID).