COMMUNICATION DEVICE AND COMMUNICATION METHOD

• US 20080018428A1
• Filed: 07/17/2007
• Published: 01/24/2008
• Est. Priority Date: 01/17/2005
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: NAKAMURA, Takao, HIROTA, Naohiro, OBANA, Haruo, NUMATA, Hideshi, NISHIDA, Hirotaka, ONO, Ichirou, NAKAMURA, Norihiro, MIKI, Takeshi
• Granted Patent: US 7,482,934 B2
• Time in Patent Office: Days
• US Class Current: 340/10.1
• CPC Class Codes: G06K 19/07749 the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
• CPC Class Codes: G06K 19/07771 the record carrier comprising means for minimising adverse effects on the data communication capability of the record carrier, e.g. minimising Eddy currents induced in a proximate metal or otherwise electromagnetically interfering object
• CPC Class Codes: G06K 7/10178 including auxiliary means for focusing, repeating or boosting the electromagnetic interrogation field comparable booster antennas integrated on the record carrier itself G06K19/07794

Abstract

A communication device includes a radio frequency identification tag that performs a radio communication with a predetermined device. A first metal body has an electrical conductivity. A space adjustment unit is configured to adjust a space between the first metal body and the radio frequency identification tag. The first metal body is configured to be replaced with a second metal body, and when the first metal body is replaced with the second metal body, the space adjustment unit is configured to adjust a space between the second metal body and the radio frequency identification tag.

Claims

1. A communication device including a radio frequency identification tag that performs a radio communication with a predetermined device, the communication device comprising:

a first metal body having an electrical conductivity; and

a space adjustment unit configured to adjust a space between the first metal body and the radio frequency identification tag, wherein

the first metal body is configured to be replaced with a second metal body, and

when the first metal body is replaced with the second metal body, the space adjustment unit is configured to adjust a space between the second metal body and the radio frequency identification tag.

2. The communication device according to claim 1, wherein the space adjustment unit disables a communication function of the radio frequency identification tag by bringing the radio frequency identification tag into contact with the first metal body.

3. The communication device according to claim 1, wherein

the space adjustment unit is made of nonmetallic material, and

the space between the radio frequency identification tag and the first metal body is adjusted by keeping the radio frequency identification tag and the first metal body with a predetermined space.

4. A communication device including a radio frequency identification tag that performs a radio communication with a predetermined device, the communication device comprising:

a metal body having an electrical conductivity; and

a space adjustment unit configured to adjust a space between the metal body and the radio frequency identification tag, wherein

the space adjustment unit is a screw, and

the space between the radio frequency identification tag and the metal body is adjusted by tightening and loosening the screw.

5. The communication device according to claim 4, wherein the space adjustment unit disables a communication function of the radio frequency identification tag by bringing the radio frequency identification tag into contact with the metal body.

6. A method of performing a radio communication between a radio frequency identification tag and a predetermined device, the method comprising:

adjusting a space between the radio frequency identification tag and a metal body having an electrical conductivity; and

performing a radio communication between the radio frequency identification tag and the predetermined device after adjusting the space between the radio frequency identification tag and the metal body.