JP2009037374A - Electronic equipment equipped with electronic tag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure of electronic equipment for surely allowing communication between an electronic tag attached to an electronic component inside the electronic equipment and an external read/write terminal or the like, and for preventing any noise to be generated from the electronic component attached to the electronic equipment from being leaked to the outside of the electronic equipment. <P>SOLUTION: The electronic equipment is provided with the casing of conductive materials; electromagnetic wave relay unit attached to the casing of the conductive materials; a first electronic component attached to the inside of the casing of the conductive materials; and an electronic tag mounted on a second electronic component attached to the inside of the casing of the conductive materials. The frequency of an electromagnetic wave to be generated by the electronic tag is made different from the frequency of an electromagnetic wave to be generated by the first electronic component, and an electromagnetic wave relay unit is positioned so as to communicate with the electronic tag, and configured to conduct an electromagnetic wave whose frequency is the same as the frequency of the electromagnetic wave to be generated by the electronic tag. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electronic tag mounted on an electronic component in an electronic device and an attachment structure for an accessory of the electronic tag.

  In a manufacturing process for mounting an electronic component on an electronic substrate, an electronic tag such as an RFID is attached to the electronic substrate to perform production management. In the manufacturing process, in order to maintain high productivity, various pieces of information related to manufacturing such as mounting data of components mounted on an electronic substrate and operating status of an electronic component mounting machine are written in an electronic tag such as an RFID. By managing the information of the electronic tag, the quality and progress of the electronic substrate in the manufacturing process can be managed.

  Conventional production management has been performed using a recording medium such as a bar code label. However, in bar code label management, the bar code reader / writer must be assigned to read the bar code, and there is a limit to the amount of information that can be managed, and a large amount of information is stored. It was not suitable for. On the other hand, an electronic tag such as RFID can read a plurality of electronic tags in a specific space at a time, and the amount of information that can be stored is much larger than that of a barcode label. Recently, in order to cope with an increase in management process speed and frequency and management information, it has become mainstream to use electronic tags such as RFID.

  In general, an electronic tag communicates with a read / write terminal or the like in a non-contact manner using electromagnetic waves. The electronic tag has an antenna coil and a control unit. When the antenna coil receives a transmission signal from the read / write terminal, the control unit accumulates it in the capacitor as power, and uses the power to store it in the storage unit. Information such as the stored ID code is transmitted again from the antenna coil to the read / write terminal.

  By the way, an electromagnetic field propagates an alternating electric field and a magnetic field with a phase of 90 degrees, but when an alternating magnetic flux due to the magnetic field change intersects with a conductive member such as iron, aluminum, or copper, a vortex is generated in the conductive member. A current is generated, and a magnetic flux is generated in a direction that cancels the alternating magnetic field due to the eddy current. Therefore, conventionally, in order to prevent the magnetic tag from being generated in a direction that cancels the alternating magnetic field, an electronic tag has been generally installed as far away from the conductive member as possible to communicate.

  In addition, in order to protect the surface of the installed electronic tag from external forces such as impact, it is desirable to cover the surface with a protective body made of a conductive material such as a metal having a high mechanical strength. Then, since the protector serves as a barrier when communicating with the read / write terminal or the like from the outside, communication is performed in a state of being covered with a protector made of a non-conductive material such as plastic.

  Now, the electronic component to which the electronic tag is attached is incorporated into the electronic device. Thus, attempts have been made to use an electronic tag of an electronic component when managing the electronic device after the electronic component is incorporated. In other words, the idea is to manage electronic components with a single electronic tag, and to consistently manage electronic devices to which the electronic components are attached.

  However, an electronic device that requires robustness, such as a personal computer, uses a conductive material such as a magnesium alloy as a material for the housing. Therefore, as shown in FIG. 4, when the electronic tag 120 is mounted on the electronic component 145 inside the electronic device 104 covered with the conductive material casing 150, an external read / write terminal (not shown) When performing communication, the casing 150 of the conductive material becomes a barrier, and communication cannot be performed.

  In order to solve the above-mentioned problem, in Patent Document 1, regarding the product in the packaging box, the electronic tag storing the product information is attached to the electronic tag accurately from the outside of the packaging box. It is disclosed that the position is grasped and the product information is read.

  Therefore, as shown in FIG. 5, by using a non-conductive material 155 for a part of the conductive material casing 150 of the electronic device 105, communication between the electronic tag 120 and an external read / write terminal or the like is facilitated. It is conceivable to be able to do this.

JP 2001-122334 A

  However, the electronic component 140 inside the electronic device 105 generates noise when the electronic device 105 is powered on. This noise leaks to the outside through the non-conductive material 155 that is a part of the conductive material casing 150 of the electronic device 105 and causes radio interference. As a result, the electronic device cannot satisfy the standard regarding radio wave interference.

  In the present invention, communication with an external read / write terminal or the like can be reliably performed from an electronic tag attached to an electronic component inside the electronic device, and noise generated from the electronic component attached to the electronic device is transmitted to the outside of the electronic device. An object is to provide a structure of an electronic device that does not leak.

  The electronic apparatus according to the present invention includes a case made of a conductive material, a first electronic component attached inside the case made of conductive material, and a second electron attached inside the case made of conductive material. An electronic device having an electronic tag mounted on a component, wherein an electromagnetic wave relay is attached to a casing made of a conductive material.

  The electromagnetic wave repeater is located at a position where it can communicate with the electronic tag, and conducts an electromagnetic wave having the same frequency as the electromagnetic wave emitted by the electronic tag.

  The frequency of the electromagnetic wave emitted from the electronic tag is different from the frequency of the electromagnetic wave generated from the first electronic component.

  The electromagnetic wave repeater has a structure in which a coil and a magnetic body are arranged inside and outside the casing of the conductive material.

  According to the present invention, communication between an electronic tag mounted on an electronic component inside the electronic device and an external read / write terminal is performed via an electromagnetic wave relay attached to the casing of the electronic device. Even if the device is covered with a casing made of a conductive material such as magnesium alloy, there is an effect that communication is not hindered.

  Further, according to the present invention, since the frequency of the electromagnetic wave emitted from the electronic tag is different from the frequency of the electromagnetic wave generated from the electronic component inside the electronic device, noise leaks through the electromagnetic wave relay attached to the casing of the conductive material. The effect that can be prevented.

  In addition, according to the present invention, not only the electronic component on which the electronic tag is mounted can be managed, but also the electronic device to which the electronic component is attached can be managed, so that from component to product can be managed consistently. There is an effect.

  The best mode for carrying out the present invention will be described with reference to the drawings. FIG. 1 is an overall configuration diagram for explaining an electronic device 100 according to an embodiment of the present invention. In the figure, an electronic device 100 includes an electronic tag 120, an electromagnetic wave relay 130, electronic components 140 and 145, and a casing 150 of a conductive material.

  The electronic device 100 is a device in which various electronic components 140 such as capacitors and resistors and an electronic substrate 145 such as a mother board are incorporated, and the outside is mainly covered with a casing 150 made of a conductive material. is there. Specifically, a personal computer (Personal Computer), a PDA (Personal Digital Assistant), or the like.

  The electronic tag 120 is a recording medium that performs non-contact communication with a reader / writer terminal or the like (not shown), and specifically, is an IC tag or RFID.

  FIG. 2 is a block diagram showing the configuration of the electronic tag 120. Referring to FIG. 2, the electronic tag 120 includes an antenna coil 210, a semiconductor IC chip 220, a core member (not shown), and the like.

  The semiconductor IC chip 220 is generally packaged and configured such as an IC (semiconductor integrated circuit) chip or an LSI (semiconductor large scale integrated circuit) chip. Inside the semiconductor IC chip 220, as shown in FIG. 2, a CPU 221 serving as a control unit, a memory 222 serving as a storage unit, a transceiver 223, and a capacitor 224 serving as a power storage unit are provided.

  A signal transmitted from an external reader / writer terminal (not shown) or the like is transmitted to the CPU 221 via the transceiver 223, and the electric power is stored in the capacitor 224. In addition, the capacitor 224 serving as a power storage unit may not be provided, and power may be continuously supplied to the semiconductor IC chip 220 from an external reader / writer terminal or the like.

  The CPU 221 is a central processing unit that reads out programs and various data stored in the memory 222, performs necessary calculations and determinations, and performs various controls. The memory 222 stores various programs such as history data and lot management data related to various programs for operating the CPU 221 and electronic components and electronic devices to which the electronic tag 120 is attached.

  FIG. 3 is a diagram showing the configuration of the electromagnetic wave repeater 130. Referring to FIG. 3, the electromagnetic wave repeater 130 includes a coil 310, a coil 320, a magnetic body 330, a magnetic body 340, a wire 350, and a part of a conductive material casing 150. Note that the coil 310 and the magnetic body 330 are located outside the electronic device 100, and the coil 320 and the magnetic body 340 are located inside the electronic device 100.

  The electromagnetic wave repeater 130 is configured to pass only the same electromagnetic wave as that used in communication between the electronic tag 120 and the reader / writer terminal. Specifically, the coil 310 and the coil 320 are designed to resonate at the same frequency as the electromagnetic wave used in communication between the electronic tag 120 and the reader / writer terminal. This frequency is set to be different from the frequency of noise generated from the electronic component 140.

  An electromagnetic wave transmitted to the electronic device 100 from an external reader / writer terminal (not shown) or the like reaches the coil 310 and is converted into a current via the magnetic body 330. The current is transmitted to the magnetic body 340 through the wire 350 and is converted into electromagnetic waves by the coil 320. The converted electromagnetic wave reaches the electronic tag 120, whereby the electronic tag 120 starts a predetermined operation. Further, communication from the electronic tag 120 to the external reader / writer terminal or the like through the electromagnetic wave relay 130 is performed through the same electromagnetic wave and current conversion.

  Returning to FIG. 1, the features of the present invention will be described in detail. Noise generated from the electronic component 140 inside the electronic device 100 covered with the conductive material casing 150 does not leak outside the electronic device 100. This is because the electronic device 100 is covered with the case 150 made of a conductive material and does not include the electronic component 140 that emits a frequency that can pass through the electromagnetic wave repeater 130.

  When there is communication from the external reader / writer terminal or the like to the electronic tag 120, the electronic device 100 is covered with a casing 150 made of a conductive material, but the electromagnetic wave relay 130 is connected to the reader / writer terminal or the like. Since the electromagnetic wave emitted from is conducted, the electronic tag 120 can communicate with an external reader / writer terminal or the like.

1 is an overall configuration diagram of the present invention. The figure which shows the structure of the control system of an electronic tag. The figure which shows the structure of an electromagnetic wave repeater. The whole block diagram of the prior art example 1. FIG. The whole block diagram of the prior art example 2. FIG.

Explanation of symbols

100 Electronic Device 120 Electronic Tag 210 Antenna Coil 220 Semiconductor IC Chip 221 CPU
222 Memory 223 Transceiver 224 Capacitor 130 Electromagnetic wave repeater 310 Coil 320 Coil 330 Magnetic body 340 Magnetic body 350 Wire 140 First electronic component 145 Second electronic component 150 Conductive material casing 155 Non-conductive material casing

Claims (4)

A housing of conductive material;
A first electronic component mounted inside a housing of the conductive material;
In an electronic device having an electronic tag mounted on a second electronic component attached to the inside of the casing of the conductive material,
An electronic apparatus, wherein an electromagnetic wave repeater is attached to a casing of the conductive material. The electronic device according to claim 1,
The said electromagnetic wave repeater exists in the position which can communicate with the said electronic tag, and conducts the electromagnetic wave of the same frequency as the frequency of the electromagnetic wave which the said electronic tag emits, The electronic device characterized by the above-mentioned. The electronic device according to claim 1 or 2,
The frequency of the electromagnetic wave which the said electronic tag emits differs from the frequency of the electromagnetic wave which arises from a said 1st electronic component, The electronic device characterized by the above-mentioned. The electronic device according to claim 1 or 2,
The electromagnetic wave repeater has an electronic device having a structure in which a coil and a magnetic body are arranged inside and outside a casing of the conductive material.

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