Wireless Communication Tag and Wireless Communication System

• US 20090102614A1
• Filed: 10/16/2008
• Published: 04/23/2009
• Est. Priority Date: 10/17/2007
• Status: Active Grant

• Current Assignee: MyClerk LLC (IPValuation Partners, LLC)
• Original Assignee: Aruze Corp. (Universal Entertainment Corporation)
• Inventors: KOYAMA, Toshimi, FUJIMOTO, Jun
• Granted Patent: US 8,400,279 B2
• Time in Patent Office: Days
• US Class Current: 340/10.510
• CPC Class Codes: G06K 19/0707 the arrangement being capable of collecting energy from external energy sources, e.g. thermocouples, vibration, electromagnetic radiation G06K19/0702 takes precedence
• CPC Class Codes: G06K 19/0712 the arrangement being capable of triggering distinct operating modes or functions dependent on the strength of an energy or interrogation field in the proximity of the record carrier active means for hindering electromagnetic reading or writing G06K19/07336
• 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 19/07767 the first and second communication means being two different antennas types, e.g. dipole and coil type, or two antennas of the same kind but operating at different frequencies

Abstract

A wireless communication tag according to the present invention includes a first antenna 8 previously set with predetermined identification information, and for wirelessly communicating various types of data with a reader/writer 6; a controller (IC chip 14) for controlling the data communicated through the first antenna; a second antenna 10 for receiving an electromotive radio wave 4e for causing electric power by a radio wave; and a charging unit (rectifying circuit 16 and a capacitor 18) for causing electric power by the electromotive radio wave received from the second antenna as well as for storing the caused electric power. With use of the electric power stored in the charging unit, the first antenna supplies data relating to the identification information to the reader/writer. The second antenna also can provide the reader/writer with the identification information.

Claims

1. A wireless communication tag previously set with predetermined identification information, the wireless communication comprising:

(i) a first antenna for wirelessly communicating various types of data with a reader/writer;

(ii) a controller for controlling the data communicated through the first antenna;

(iii) a second antenna for receiving an electromotive radio wave for generating electric power by a radio wave; and

(iv) a charging unit for causing electric power by the electromotive radio wave received from the second antenna as well as for storing the caused electric power, wherein;

the electric power stored in the charging unit is used, thereby allowing either one of the first and second antennas to provide, to the reader/writer, data relating to the identification information.

2. The wireless communication tag according to claim 1, wherein:

the second antenna wirelessly transmits the data relating to the identification data to the reader/writer when the first antenna wirelessly receives the data from the reader/writer.

3. The wireless communication tag according to claim 1, wherein:

a radio wave frequency at the time of communication between the first antenna and the reader/writer and a frequency of the electromotive radio wave received from the second antenna are set different from each other.

4. The wireless communication tag according to claim 1, wherein:

a memory unit for previously storing the identification information as well as for storing the data controlled by the controller.

5. The wireless communication tag according to claim 1, wherein:

the charging unit includes a rectifying circuit and a secondary battery unit; and

the secondary battery unit stores an electromotive force rectified by the rectifying circuit upon receipt of the electromotive radio wave from the second antenna.

6. The wireless communication tag according to claim 5, wherein:

the rectifying circuit is formed as a bridge circuit.

7. The wireless communication tag according to claim 1, further comprising a resonant circuit.

8. The wireless communication tag according to claim 1, wherein:

the second antenna is configured of a resonant circuit;

9. A wireless communication tag comprising:

(i) an IC device for storing predetermined identification information;

(ii) a first antenna for receiving from an external reader/writer, a first radio wave including a reading-command signal, and for transmitting to the external reader/writer, the predetermined identification information stored in the IC device and read out by the reading-command signal;

(iii) a second antenna for receiving a second electromotive radio wave from an external predetermined device; and

(iv) a charging unit for storing electric power caused by the second radio wave received from the second antenna, wherein;

the wireless communication tag, in the case where the first radio wave received from the first antenna is strong, activates the IC device with a current caused by the received strong first radio wave, and reads out the predetermined identification information stored in the IC device, by the command signal included in the first radio wave;

the wireless communication tag, in the case where the first radio wave received from the first antenna is weak, activates the IC device with a resultant current of a current caused by the received weak first radio wave and a current from the charging unit previously storing the electric power, and reads out the predetermined identification information stored in the IC device, by the command signal included in the first radio wave; and

the wireless communication tag transmits through the first antenna to the external reader/writer, the predetermined identification information read out of the IC device with use of a radio wave obtained from the resultant current including the current from the charging unit.

10. The wireless communication tag according to claim 9, further comprising a diode disposed between the IC device and the charging unit, the diode for exercising ON/OFF control over the current supplied from the charging unit to the IC device, depending on intensity of the first radio wave received by the first antenna.

11. A wireless communication system comprising:

(a) a reader/writer for transmitting a first radio wave including a reading-command signal;

(b) a radio wave transmitting device for transmitting a second electromotive radio wave; and

(c) a wireless communication tag including;

(i) an IC device for storing predetermined identification information;

(ii) a first antenna for receiving a first radio wave from the reader/writer, and for transmitting to the reader/writer the predetermined identification information stored in the IC device read out by the command signal included in the first radio wave;

(iii) a second antenna for receiving a second radio wave from the radio wave transmitting device; and

(iv) a charging unit for storing electric power caused by the second radio wave received from the second antenna, wherein;

the wireless communication tag, in the case where the first radio wave received from the first antenna is strong, activates the IC device with a current caused by the received strong first radio wave, and reads out the predetermined identification information stored in the IC device, by the command signal included in the first radio wave;

the wireless communication tag, in the case where the first radio wave received from the first antenna is weak, activates the IC device with a resultant current of a current caused by the received weak first radio wave and a current from the charging unit previously storing the electric power, and reads out the predetermined identification information stored in the IC device, by the command signal included in the first radio wave; and

the wireless communication tag transmits through the first antenna to the reader/writer, the predetermined identification information read out of the IC device with use of a radio wave obtained from the resultant current including the current from the charging unit.

12. The wireless communication system according to claim 11, further comprising a diode disposed between the IC device and the charging unit, the diode for exercising ON/OFF control over the current supplied from the charging unit to the IC device, depending on intensity of the first radio wave received by the first antenna.