JP2000105801A - Noncontact data carrier package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a multidirectional communication and a wide-angle communication by forming an antenna coil of conductor loops arranged in various angles. SOLUTION: This packet is equipped with at least a storage element which stores tag information, a control and signal converting circuit for sending and receiving signals, and the antenna coil. The antenna coil is composed of plural conductor loops 1 arranged in various angles, so a wide communication angle can be obtained. Namely, the maximum communication sensitivity can be obtained at right angles to the conductor loop surface. Further, when the antenna coil is composed of the conductor loops 1 perpendicular to each other, the conductor loops 1 have the maximum communication sensitivity at right angles to their conductor loop surfaces, so the communication angle is wider than when the surfaces of the conductor loops 1 face the same direction. Then the directions of the plural conductor loop surfaces are selected to optionally obtain plural communication directions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-contact data carrier package for exchanging information with an external device in a non-contact manner.

[0002]

2. Description of the Related Art A non-contact data carrier system is composed of a transponder called a non-contact data carrier and an interrogator connected to a host side. It communicates information in a non-contact manner via a transmission medium such as a microwave (radio wave).

In this non-contact data carrier system, a transponder is attached to various individuals, information about the individuals is remotely read by an interrogator and provided to a host, thereby realizing information processing about the individuals.

The information transmission system of the non-contact data carrier system includes an electromagnetic coupling system, an electromagnetic induction system, a microwave system, an optical communication system, and the like. The energy of the transmission signal from the interrogator can be used as the driving power of the transponder. Therefore, unlike the case where a battery is used as a drive source, there is an advantage that there is no concern about deterioration of response performance due to battery life and use limit. In addition, the non-contact data carrier has a low product unit price, is small and lightweight, and can communicate information with the interrogator by non-contact, so that its use range is expected to further expand in the future.

[0005] In a contactless data carrier system in which communication is performed at a short distance, an antenna coil is used for transmission and reception. Communication is possible when the antenna coil of the interrogator on the host side and the antenna coil of the non-contact data carrier package, which is the transponder, face each other, but the interrogator antenna coil and the transponder antenna When the coil forms an angle, the communication signal is weakened, and a direction intersecting at right angles becomes a blind spot.

As described above, when a non-contact data carrier package is attached to an article to communicate with an interrogator, communication cannot be performed if the non-contact data carrier package is installed in a different direction. A situation arises in which a plurality of contactless data carrier packages in different directions must be mounted.

However, as can be readily understood from data rewriting and the like, it is originally desirable that a non-contact data carrier package basically corresponds to one non-contact data carrier package for one article. Things. For this reason, a non-contact data carrier package capable of communicating not only in one specific direction but also in a plurality of directions and at a wider angle has been desired.

[0008]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and is a non-contact data carrier package capable of communication in a plurality of directions and communication at a wider angle. The purpose is to provide.

[0009]

According to the present invention, there is provided a contactless data carrier package comprising: a storage element storing tag information;
A non-contact data carrier package comprising at least a control and signal conversion circuit for transmitting and receiving signals and an antenna coil for transmitting and receiving signals,
The antenna coil comprises a plurality of conductor loops that are at an angle to each other.

According to the present invention, a wide communication angle can be obtained because the antenna coil is composed of a plurality of conductor loops that form an angle with each other. That is, the antenna coil is composed of a conductor loop, and in a direction perpendicular to the conductor loop surface,
When the maximum communication sensitivity can be obtained and the antenna coil consists of a plurality of conductor loops that are at an angle to each other, each conductor loop has the maximum communication sensitivity in the direction perpendicular to each conductor loop plane. As a result, a wider communication angle can be obtained as compared with the case where the conductor loop faces face the same direction. By selecting the directions of the plurality of conductor loop surfaces, a plurality of communication directions can be arbitrarily formed.

The plurality of conductor loops forming an angle with each other according to the present invention may be connected in series with each other, may be connected in parallel, or may be connected by a combination of series connection and parallel connection. .

Further, in the non-contact data carrier package according to the present invention, in the above-described non-contact data carrier package, the antenna coil including the plurality of conductor loops forming an angle with each other is formed in a fan-shaped spirally wound conductor. An antenna coil comprising:

[0013] Here, the conductor formed in a spiral shape in the form of a fan means, for example, the one shown in FIG. 5, in which the spirally wound conductor is formed in a fan shape as shown in the figure. Accordingly, a plurality of conductor loops facing different directions are formed.

Therefore, by using the antenna coil of the present invention, which is formed by forming the spirally wound conductor into a fan shape, as the antenna of the non-contact data carrier package, it is possible to provide communication sensitivity in a very wide direction. It is possible.

Further, in the non-contact data carrier package according to the present invention, in the above-mentioned non-contact data carrier package, the antenna is connected to the non-contact data carrier package main body through a transformer.

According to the present invention, the mismatch between the impedance of the antenna coil and the impedance of the non-contact data carrier circuit caused by the antenna coil being formed by a plurality of conductor loops that are at an angle to each other is achieved by way of the transformer. It is possible to match. By performing matching with the antenna coil non-contact data carrier circuit using the transformer, transmission and reception can be performed efficiently.

[0017]

Embodiments of the present invention will be specifically described below with reference to the drawings.

FIG. 1 is a schematic sectional view showing an antenna shape of a non-contact data carrier package according to an embodiment of the present invention. In FIG. 1, 1 is a conductor loop, 2 is a non-contact data carrier substrate, and 3 is an exterior of a non-contact data carrier package. FIG. 2 is a schematic plan view thereof. In FIG. 2, the antenna coil is composed of two conductor loops that are angled with each other. Since the two antenna coils are at an angle to each other and have different directions of maximum sensitivity, by using these two conductor loops together,
The communicable angle range can be expanded as compared with the case of one conductor loop.

FIG. 3 is a schematic perspective view showing an antenna shape of a non-contact data carrier package according to another embodiment of the present invention. In FIG. 3, the antenna coil is composed of two conductor loops that are perpendicular to each other. By forming the two antenna coils at right angles to each other, the sensitivity of the azimuth with the lowest transmission / reception sensitivity can be complemented.

FIG. 4 is a schematic perspective view showing an antenna shape of a non-contact data carrier package showing still another embodiment of the present invention. In FIG. 4, the antenna coil is composed of three conductor loops that are perpendicular to each other. By forming the three antenna coils at right angles to each other, the sensitivity can be complemented for the azimuth with the lowest transmission / reception sensitivity.

In the present invention, the outer package of the non-contact data carrier package when the antenna coil is formed of two or three conductor loops at right angles to each other is not necessarily limited to the shape shown in FIG. 3 or FIG. Absent.

FIG. 5 is a schematic plan view showing an antenna shape of a non-contact data carrier package showing still another embodiment of the present invention. As shown in the figure, by making the conductor in which the antenna coil is spirally wound into a fan shape, a multi-directional conductor loop is formed, and the communicable direction can be widened.

[0023]

As described above, by using the non-contact data carrier package having the antenna coil composed of a plurality of conductor loops forming an angle with each other according to the present invention, one non-contact data carrier package can use not only a specific communication direction but also a specific communication direction. , Communication in a plurality of directions can be made possible, and the angle range of communication can be expanded.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an antenna shape of a contactless data carrier package according to an embodiment of the present invention.

FIG. 2 is a plan view showing an antenna shape of a non-contact data carrier package showing one embodiment of the present invention.

FIG. 3 is a perspective view showing an antenna shape of a non-contact data carrier package according to another embodiment of the present invention.

FIG. 4 is a perspective view showing an antenna shape of a non-contact data carrier package showing still another embodiment of the present invention.

FIG. 5 is a plan view showing an antenna shape of a non-contact data carrier package showing still another embodiment of the present invention.

[Explanation of symbols]

1 ... conductor loop, 2 ... non-contact data carrier board, 3 ... non-contact data carrier package exterior,

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Takanori Miyauchi 5-14-25 Ryoke, Kawaguchi-shi, Saitama F-term in Toshiba Chemical Co., Ltd. Kawaguchi Plant (reference) 5B035 AA00 BA03 CA01 CA23 5B058 CA17 KA40

Claims (3)

[Claims] 1. A non-contact data carrier package comprising at least a storage element storing tag information, a control and signal conversion circuit for transmitting and receiving signals, and an antenna coil for transmitting and receiving signals. A non-contact data carrier package, wherein the antenna coil comprises a plurality of conductor loops forming an angle with each other. 2. The non-contact data carrier package according to claim 1, wherein the antenna coil including the plurality of conductor loops forming an angle with each other is formed by forming a spirally wound conductor into a fan shape. 3. The non-contact data carrier package according to claim 1, wherein the antenna is connected to the non-contact data carrier package body through a transformer.