RADIO FREQUENCY IDENTIFICATION (RFID) DEVICE WITH A RESPONSE STOP COMMAND

• US 20080316034A1
• Filed: 08/22/2008
• Published: 12/25/2008
• Est. Priority Date: 03/28/2005
• Status: Active Grant

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Moritani, Masumi, Takami, Yutaka, FUKUSHIMA, Shinichiro
• Granted Patent: US 7,710,272 B2
• Time in Patent Office: Days
• 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. RFID including a communication control portion for transmitting and receiving command data to and from external communication equipment, a processing control portion for processing the command data transmitted and received, and a data storage portion for storing data, wherein said processing control portion includes response stopping means for stopping a response to said external communication equipment and response restarting means for restarting the response, and said response restarting means changes a content of said data storage portion before the response is restarted.

2-8. -8. (canceled)