JP2003087385A - Portable digital assistant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable digital assistant an optimum part for assembling a recording information medium of which can be decided. SOLUTION: This invention provides a mobile phone 1 to an antenna 5 of which an RF ID tag 5d is fitted. Since the RF ID tag apart from a mobile phone main body can wirelessly communicate data with a host device without electromagnetic wave interference, the RF ID tag having convenience depending on purposes of use can provide convenience to a user.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable information terminal, and more particularly to a portable information terminal characterized in that an information recording medium is attached to an antenna provided in the portable information terminal.

[0002]

2. Description of the Related Art Conventionally, RFID tags and IC chips have rapidly spread as information recording media for tickets for events, movies, trains, entrance management, physical distribution management, personal authentication and electronic money. The shape of this RFID tag includes a label type, a card type, a coin type stick type and the like. These shapes have a close relationship with the purpose of use and application, and it can be said that the card type is the main type if it is held by a person and the label type is the main type in physical distribution management.

Recently, efforts have begun to use RFID cards and IC cards as storage media for ticket information. In particular, contactless ICs when passing through the ticket gates by rail
There have been devised a mechanism that allows a passenger to pass a ticket with a card in the bag, and a mechanism for passing a ticket gate by incorporating an IC chip in a mobile phone and causing radio waves to be emitted from the mobile phone. In addition, a method of writing a ticket-less ticket information such as a concert and payment information in an ID tag incorporated in a mobile phone to realize ticketless has been devised.

[0004]

Although the RFID tag can be used for various purposes, it is troublesome for the user to carry a card or coin for each purpose. Further, even if it is proposed to incorporate an RFID tag or an IC chip into a mobile phone, it is not possible to find an appropriate part because there is a problem in which part of the mobile phone to install. It is an object of the present invention to provide a portable information terminal capable of setting an optimum part for incorporating a recording information medium in the portable information terminal.

[0005]

The present invention relates to a portable information terminal, and the above object of the present invention is that an information recording medium on which personal information is recorded is attached to an antenna. This is achieved by providing a portable information terminal that The above object of the present invention is
The information recording medium comprises an RFID tag.
This is achieved by providing the described personal digital assistant. Another object of the present invention is to provide the information recording medium as I
This is achieved by providing the portable information terminal according to claim 1 configured with a C chip. Further, the above object of the present invention is achieved by providing a portable information terminal according to claim 1, wherein the information recording medium is detachably attached to an antenna.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. The portable information terminal of the present invention is an electronic device positioned as mobile computing and having functions such as communication and scheduling mail, and includes a mobile phone, pager (registered trademark), mobile computer, and the like. FIG. 1 is an overall explanatory view of a mobile phone as an example of the mobile information terminal. In the figure, 1 is a mobile phone, and 2 is a main body of this mobile phone. The mobile phone body 2 has a telephone terminal display section 3 for displaying data such as telephone numbers and short message services, and a telephone terminal input section 4 having key buttons for inputting data such as telephone numbers. It has and.

An antenna 5 for transmitting and receiving radio waves is attached to the mobile phone body 2. The structure of the antenna 5 will be described with reference to FIG. A cylindrical antenna insertion portion 2a is formed in the body 2 of the mobile phone. The antenna 5 is formed of a cylindrical tip portion 5a and a rod-shaped telescopic portion 5b, and the rod-shaped telescopic portion 5b is adapted to be retractably housed in the insertion portion 2a of the mobile phone body 2. Antenna 5 as required
Is projected from the insertion portion 2 or stored. An RFID, which is an example of an information recording medium, is provided in the tip portion of the antenna 5.
(Radio Frequency Identity
The RFID tag glass tube 5c in which the fication) tag is embedded is attached.

In order to incorporate the RFID tag glass tube 5c in the tip portion 5a of this antenna, it is preferable to satisfy the dimensions of the tip portion of the antenna for a commercially available mobile phone, but the glass tube φ3 × An RFID tag can be built in 15 to satisfy its size. Although the material is also an example, it is suitable for improving communication by using a glass tube, and further, by being attached to the antenna tip portion 5a, it is configured to prevent interference of electromagnetic waves from the mobile phone body 2.

As shown in FIG. 3, the RFID tag glass tube 5c has a cylindrical shape in which an RFID tag 5d having personal information recorded therein is embedded. The cylindrical shape is an example, and the shape is not limited to this, and can be arbitrarily changed. An IC chip may be embedded in the cylindrical glass tube. Although a glass tube is used to embed the RFID tag, it is not limited to a glass tube, and a non-metallic tube such as paper, wood, or plastic may be used. Anything can be used as long as it can pass through and communicate.

Since the RFID tag glass tube 5c is detachably attached to the tip portion 5a of the antenna so that it can be easily removed by hand, the RFID tag glass tube 5c is attached to the tip of the antenna in a conventional mobile phone. Even if the antenna is not provided, the antenna can be replaced and attached, and since it is only necessary to replace the antenna, it is not necessary to replace the telephone body 2, which is economical. In addition, if the RFID tag is built in the mobile phone main body 2, there is the inconvenience that the ID number must be registered each time it is lost, newly registered, or changed in model. By incorporating the RFID tag 5d in the antenna 5 as described above, the RFID tag 5d can be used regardless of the model, and since the RFID tag 5d is small, it does not spoil the appearance.

An RFID system using this RFID tag will be described. This RFID system is called a data carrier system or a non-contact type IC card system. A combination of a recording medium such as a tag or a card (called a data carrier) and a reader or a reader / writer is used to identify an individual and transmit / receive data using radio waves. Ease of operation that only needs to be approached, environment resistance such as being hard to be affected by water and oil, deterioration due to wear, high durability without damage, etc.
It has come to be noticed as a new player of automatic recognition technology.

The RFID system will be described. This system consists of an interrogator and a responder. In this case, the interrogator is called a reader or reader / writer,
A transponder is a data carrier called a tag or card. As shown in FIG. 4, communication is performed in response to a call from the interrogator. This communication is carried out by utilizing a phenomenon called "electromagnetic induction" in which an electromotive force is generated in the other coil when a current is applied to one coil while the two coils are close to each other.

As shown in FIG. 5, the transponder (data carrier) is normally in a dormant state. A starter signal is output from the interrogator (reader / writer), and when the responder approaches the range of the magnetic flux lines (the range where the starter signal reaches), induced electromotive force is generated by the energy and the circuit inside the responder It is a system that starts and communicates with the interrogator.

RFID using this electromagnetic induction system
A method for opening and closing an electric door will be described using a mobile phone having a tag attached to an antenna. In FIG. 6, reference numeral 1 is a mobile phone having an RFID tag built in an antenna 5. On the other hand, a non-contact reader 11, which is an interrogator, is installed on the front of the door for entering and leaving the room, and an activation signal is always transmitted from the reader 11. When you want to open the door, bring the mobile phone 1 closer to the non-contact reader 11 (sensing distance is about 3 cm).
Inductive electromotive force is generated in the ID tag, and the secret code generation circuit operates,
Input in pulse. This input signal is the reader 1
When it is read in 1 and the collation matches, the electric lock is unlocked and it becomes possible to enter the room, and after a certain period of time, the door is closed and locked.

[0015]

As described above, according to the present invention, since the information recording medium on which personal information is recorded is attached to the antenna of the portable information terminal, the information recording medium is separated from the main body portion of the portable information terminal, Since there is no interference of electromagnetic waves, the communication sensitivity is good. In addition, since data can be exchanged with a higher-level device without contact, it is convenient for the user because it has convenience according to the purpose of use. Further, by attaching an RFID tag or an IC chip to the antenna of the mobile information terminal, the unique number of the RFID tag or the IC chip is made the same as the number of the user's mobile information terminal, thereby improving the convenience. is there.

[Brief description of drawings]

FIG. 1 is a schematic view of an entire mobile phone.

FIG. 2 is an enlarged view of an antenna part of a mobile part.

FIG. 3 is an explanatory diagram of a glass tube in which an RFID tag is embedded.

FIG. 4 is an explanatory diagram of an RFID system, (a),
(B), (c), (d) is the detailed explanatory view. Is.

FIG. 5 is an explanatory diagram of an RFID system, (a),
(B), (c), (d) is the detailed explanatory view.

FIG. 6 is an explanatory diagram of opening a door using a mobile phone.

[Explanation of symbols]

1 Mobile phone (personal digital assistant) 2 Cellular phone body (personal digital assistant) 5 antennas 5c RFID tag glass tube 5d RFID tag

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Akihiro Takahara             1-4-22 Yaesu, Chuo-ku, Tokyo Co., Ltd.             Moriya Chamber of Commerce (72) Inventor Tomio Shigeo             1-5-7 Yaesu, Chuo-ku, Tokyo Co., Ltd.             Inside MBR (72) Inventor Satoshi Kasuya             1-25-11 Higashi Gotanda Stock Exchange, Shinagawa-ku, Tokyo             Inside the company art (72) Inventor Kazuhiro Tamura             1-25-11 Higashi Gotanda Stock Exchange, Shinagawa-ku, Tokyo             Inside the company art (72) Inventor Osamu Matsumura             322-7 Notsubo, Nakahara-ku, Kawasaki City, Kanagawa Prefecture             Ceremony Company Art Technology Center F term (reference) 5K023 AA07 LL05 MM21 PP12                 5K027 AA11 BB01 HH26                 5K101 LL12 NN01 NN11 NN25

Claims (4)

[Claims] 1. A portable information terminal, wherein an information recording medium on which personal information is recorded is attached to an antenna. 2. The portable information terminal according to claim 1, wherein the information recording medium is an RFID tag. 3. The portable information terminal according to claim 1, wherein the information recording medium is an IC chip. 4. The information recording medium is detachably attached to the antenna.
The portable information terminal described.