WIRELESS TAG READING/WRITING APPARATUS, COMMUNICATION METHOD FOR THE WIRELESS TAG READING/WRITING APPARATUS AND WIRELESS TAG RELATING TO THE COMMUNICATION METHOD

• US 20080007413A1
• Filed: 07/05/2007
• Published: 01/10/2008
• Est. Priority Date: 07/10/2006
• Status: Abandoned Application

• Current Assignee: Toshiba Tec Corporation (Toshiba Corporation)
• Original Assignee: Toshiba Tec Corporation (Toshiba Corporation)
• Inventors: Hori, Fusao
• Application Number:
  US11/773,489
• Publication Number:
  US 20080007413A1
• Time in Patent Office: Days
• US Class Current: 340/572.7
• CPC Class Codes: G06K 7/10316 using at least one antenna particularly designed for interrogating the wireless record carriers antennas in general H01Q1/22
• CPC Class Codes: G06K 7/10336 the antenna being of the near field type, inductive coil

Abstract

A terminated antenna, which is an antenna being terminated at ends, is provided, and the terminated antenna is electromagnetically connected with an antenna of a wireless tag to communicate. Thus, the remaining power or redundant power therewithin is transferred to the terminated antenna and is transformed to thermal energy at the ends. According to an embodiment, a communication antenna may be faced, in a non-contact manner, against a part or all of a closed plane or open plane formed by a wireless tag antenna, be electromagnetically connected with the wireless tag antenna. A terminated antenna may be faced, in a non-contact manner, against a part or all of a closed plane or open plane formed by a wireless tag antenna and be electromagnetically connected with the wireless tag antenna.

Claims

1. A wireless tag reading/writing apparatus that exchanges information with a wireless tag to communicate, the reading/writing apparatus comprising:

a communication antenna, which is an antenna placed, in a non-contact manner, to electromagnetically connect with a wireless tag antenna, which is an antenna of the wireless tag;

a terminated antenna, which is an antenna placed, in a non-contact manner, to electromagnetically connect with the wireless tag antenna and being terminated at ends; and

a reader/writer that performs signal processing.

3. The wireless tag reading/writing apparatus according to claim 1, wherein the communication antenna forms a closed plane or open plane.

4. The wireless tag reading/writing apparatus according to claim 1, wherein the terminated antenna forms a closed plane or open plane.

5. The wireless tag reading/writing apparatus according to claim 1, wherein the communication antenna and the terminated antenna are placed to face against each other in two layers in a non-contact manner.

6. The wireless tag reading/writing apparatus according to one of claims 1 to 5, wherein one or both of the communication antenna and the terminated antenna is or are placed above or below the closed plane or open plane formed by the wireless tag antenna.

2. A wireless tag reading/writing apparatus that exchanges information with a wireless tag to communicate, the apparatus comprising:

a communication antenna, which is an antenna placed to face against, in a non-contact manner, a part or all of a closed plane or open plane formed by a wireless tag antenna, which is an antenna of the wireless tag, and to electromagnetically connect with the wireless tag antenna;

a terminated antenna, which is an antenna placed to face against, in a non-contact manner, a part or all of a closed plane or open plane formed by the wireless tag antenna and to electromagnetically connect with the wireless tag antenna and being terminated at ends; and

a reader/writer that performs signal processing.

7. A wireless tag communication method comprising the steps of:

electromagnetically connecting a communication antenna, which is an antenna exchanging electromagnetic waves of a wireless tag reading/writing apparatus that communicates with a wireless tag, to a wireless tag antenna, which is an antenna of the wireless tag to communicate;

electromagnetically connecting a terminated antenna, which is an antenna being terminated at ends, to the wireless tag antenna; and

exchanging information with the wireless tag by the wireless tag reading/writing apparatus.

8. The wireless tag communication method according to claim 7, wherein:

the communication antenna is placed to face, in a non-contact manner, against a part or all of a closed plane or open plane formed by the wireless tag antenna and is electromagnetically connected with the wireless tag antenna; and

the terminated antenna is placed to face, in a non-contact manner, against a part or all of a closed plane or open plane formed by the wireless tag antenna and is electromagnetically connected with the wireless tag antenna.

9. The wireless tag communication method according to claim 7, wherein:

the communication antenna is placed to face, in a non-contact manner, against a part or all of a closed plane or open plane formed by the wireless tag antenna and is electromagnetically connected with the wireless tag antenna; and

the terminated antenna is placed to face against a part or all of a closed plane or open plane formed by the wireless tag antenna in two layers in a non-contact manner and is electromagnetically connected with the wireless tag antenna.

10. A wireless tag that communicates with a wireless tag reading/writing apparatus having:

a communication antenna, which is an antenna placed to face, in a non-contact manner, against a part or all of a closed plane or open plane formed by a wireless tag antenna that is an antenna of a wireless tag to communicate and to electromagnetically connect with the wireless tag antenna;

a terminated antenna, which is an antenna placed to face, in a non-contact manner, against a part or all of a closed plane or open plane formed by the wireless tag antenna and to electromagnetically connect with the wireless tag antenna and being terminated at ends; and

a reader/writer that performs signal processing,

wherein the wireless tag antenna transfers the remaining power or redundant power within a wireless tag to the terminated antenna.