JPH06282699A - Non-contact information transmitter - Google Patents

Abstract

PURPOSE:To provide the non-contact information transmitter which prevents the faults of electronic parts without disconnecting an internal circuit by external pressure such as bending. CONSTITUTION:Electronic parts 4 are mounted on an upper surface 2a of a substrate 2, and an antenna 8 is mounted on a lower face 2b of the substrate 2. A spacer 10 is installed at a position faced to the antenna 8 on the upper surface side of the substrate 2, and a conductive upper part armour board 12 to be electrically conducted to the electronic parts 4 and to cover the entire substrate is provided in the upper direction. Since the conductive upper armour board 12 is provided, the electronic parts 4 mounted inside a radio card 1 are protected from the external pressure, and the electronic parts 4 are grounded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contactless information transmitting device for transmitting and receiving wireless information to and from an information processing device such as an automatic ticket gate or a ticket processing device.

[0002]

2. Description of the Related Art Conventionally, a magnetic card such as a commuter ticket or a ticket to be inserted into an automatic ticket gate installed at a ticket gate of a station, or a toll ticket to be inserted into a toll collection device installed at a tollgate on an expressway. A magnetic recording medium such as a disk is put in these devices to record or read necessary information.

In this case, the porcelain recording medium is put into the apparatus and brought into contact with a read head or a recording head to read or record magnetic information. Therefore, for example, a commuter pass that is inserted into an automatic ticket gate must be removed from the commuter pass and inserted into the automatic ticket gate, and after the information is read by the automatic ticket gate, it must be removed from the device and stored in the commuter pass again. I have to. Also, when inserting a toll ticket into the toll collection device, open the car window in front of the toll collection device and hand over the toll to the attendant, who will insert the toll into the device and calculate the toll. The charges have been collected.

In the information transmission means such as the above-mentioned magnetic recording medium which is required to be inserted into the apparatus, it is often manually operated by the user, and the operation is troublesome and the information cannot be transmitted promptly.

Therefore, recently, as an information transmission means,
So-called IC cards have been developed that incorporate electronic components such as control elements such as CPUs. This kind of IC card
Data is exchanged between a control element in the IC card and an external information processing device by transmitting and receiving wireless information in a non-contact manner.

The IC card includes a board on which electronic components such as a CPU, a resistor, a capacitor, an LSI, and a battery are mounted on the surface, an antenna provided on the mounting surface of the board and in an area other than the mounting area, and the board. A grounding portion provided over the entire surface opposite to the mounting surface and electrically connected to the electronic component, and a resin sheet for coating both surfaces of the electronic component, the antenna, and the substrate on which the grounding portion is mounted. ,,.

[0007]

The above-mentioned IC card is weak in strength against external pressure due to bending, etc., so that circuit breakage of a circuit incorporating an electronic component or failure of the electronic component itself can be transmitted. The problem of disappearing arises.

The present invention has been made in view of the above points, and an object thereof is to provide a non-contact information transmitting device in which an internal circuit is not broken by an external pressure such as bending and an electronic component is not broken. Especially.

[0009]

According to the present invention, an information transmitting / receiving unit for transmitting and receiving wireless information, and wireless information from the information transmitting / receiving unit are received and arithmetic processing is performed on the wireless information. The board includes an information processing means for transmitting a calculation result to the information transmitting / receiving section, a board having a mounting section on which electronic parts constituting the information processing means are mounted, and a ground section for grounding the information processing means. On the other hand, there is provided a non-contact information transmission device characterized in that a conductive protection member is provided outside the ground portion.

Further, according to the present invention, the information transmitting / receiving section for transmitting and receiving the wireless information and the wireless information from the information transmitting / receiving section are received, the wireless information is subjected to arithmetic processing, and the arithmetic result is the above information. Information processing means for transmitting to the transmitting / receiving unit,
A board having a mounting surface on which electronic parts constituting the information processing means are mounted, and a grounding part for grounding the information processing means are provided, and a conductive material is provided outside the grounding part with respect to the board. Provided is a non-contact information transmission device characterized in that a protective member is provided.

Further, according to the present invention, the information transmitting / receiving unit for transmitting and receiving the wireless information and the wireless information from the information transmitting / receiving unit are received, the wireless information is subjected to arithmetic processing, and the arithmetic result is obtained as the above information. Information processing means for transmitting to the transmitting / receiving unit,
A board having a mounting surface on which electronic parts constituting the information processing means are mounted; and a grounding part configured of a conductive protection member for protecting the electronic parts from external pressure and grounding the information processing means. A contact information transmission device is provided.

Further, according to the invention, the grounding portion is
There is provided a non-contact information transmitting device having an area larger than that of the substrate and provided over the entire surface of either the mounting surface or the back surface of the substrate.

[0013]

The contactless information transmitting apparatus of the present invention is an information transmitting / receiving unit for transmitting / receiving wireless information to / from an information processing apparatus installed outside the contactless information transmitting apparatus using electromagnetic waves, and information from the information transmitting / receiving unit. Which is an electronic component constituting the information processing means and the information processing means for receiving the
A substrate on which electronic components such as a capacitor, an LSI, and a battery are mounted on a mounting surface, a grounding portion for grounding the electronic components, and first and second exterior surfaces that form an outer shell of the device. According to the first aspect of the invention, one of the first and second exterior surfaces is made of a conductive material to protect the electronic component and act as a ground portion. According to the second invention, the grounding portion is provided over the entire surface of either one of the first and second exterior surfaces. According to the third invention, the exterior surface on the same side as the ground portion with respect to the substrate is made of a conductive material. By forming either one of the exterior surfaces with a conductive material as described above, the entire surface on one side of the non-contact information transmission device acts as a ground portion.

[0014]

Embodiments of the present invention will now be described in detail with reference to the drawings.

As shown in FIG. 1, a non-contact information transmitting device, a so-called wireless card, according to the first embodiment of the present invention,
Radio signals are transmitted / received to / from a radio unit that is provided at an entrance or exit of a specific facility and transmits / receives radio signals.

The wireless card 1 has a substrate 2 on which electronic components 4 such as a CPU, a resistor, a capacitor, an LSI and a battery are mounted. As the substrate 2, a resin substrate having a higher dielectric constant than glass epoxy resin and a lower dielectric constant than Teflon, for example, a BT resin substrate (dielectric constant 4.2) is used. A printed wiring 6 is formed on the lower surface 2b of the substrate 2, and the electronic component 4 is soldered through a hole (not shown) communicating with the upper surface 2a of the substrate to form an information processing circuit 5 as information processing means. There is. In addition, a ground terminal 16 connected to a grounding part described later that grounds the information processing circuit 5
Are provided on the upper surface 2 a of the substrate 2 electrically connected to the electronic component 4.

An antenna 8 as an information transmitting / receiving unit for transmitting / receiving radio information by electromagnetic waves to / from an external device is provided in a region on the lower surface 2b of the substrate 2 which does not overlap the printed wiring 6. The antenna 8 is provided on the surface opposite to the electronic component 4 via the substrate 2 and is connected to the information processing circuit 5. A spacer 10 which is thicker than the height of the electronic component 4 and made of the same material as that of the substrate 2 is provided on the upper surface 2 a of the substrate 2 facing the antenna 8. The spacer 10 is adhered to the upper surface 2 a of the substrate 2 with an epoxy sheet adhesive 11 having a dielectric constant substantially the same as that of the substrate 2.

The electronic component 4, the antenna 8 and the spacer
The substrate 2 provided with 10 is provided with a substantially rectangular plate-shaped upper exterior plate 12 that constitutes an exterior surface of the base body 2 on the upper surface 2a side. The upper exterior plate 12 is particularly formed of a conductive material such as metal, and one end portion 12 a thereof is bonded to the ground terminal 16 via a conductive adhesive 17 to thereby process the information processing circuit 5.
Acts as the grounding part of the. The upper exterior plate 12 is supported on the upper surface of the spacer 10, and the other end 12a is fixed to the base 2 by a plastic frame 13. The upper exterior plate 12 is a wireless card.
The entire upper surface of the battery 1 is covered to protect the electronic component 4 mounted on the upper surface 2a of the base 2 from external pressure. On the other hand, the lower surface 2 of the base body 2
The resin b is sealed by the resin 14 to protect the printed wiring 6 and the antenna 8.

FIG. 2 schematically shows the internal structure of the information processing circuit 5. That is, the information processing circuit 5 is connected to the antenna 8 that receives a wireless signal (electromagnetic wave) transmitted from the wireless device main body 30 and transmits a wireless signal to the wireless device main body 30. The antenna 8 is connected to a modulation / demodulation circuit 21 that performs A / D conversion on a signal input into the information processing circuit 5 or output to the outside of the information processing circuit 5. The modulation / demodulation circuit 21 is connected to the bus 23 via an input control circuit 22 that controls the input / output of signals with the wireless device main body 30. The bus 23 has a CPU for processing signals
24, a ROM 25 for storing a calculation program, and a RAM 26 for storing a signal subjected to calculation processing are connected. Hereinafter, the operation of receiving and transmitting a wireless signal will be described in detail.

An electromagnetic wave transmitted from the radio main body 30, that is, a radio signal is received by the antenna 8. The radio signal (analog) received by the antenna 8 is digitized by the modulation / demodulation circuit 21 in the information processing circuit 5 and input to the input / output control circuit 22. The signal input of which is permitted by the input / output control circuit 22 is input to the CPU 24 via the bus 23. The CPU 24 receives a wireless signal and calls an arithmetic program stored in the ROM 25 via the bus 23, processes the signal based on the arithmetic program, and outputs the processed signal to the RAM 26 via the bus 23.
To store. The signals stored in the RAM 26 are transferred to the bus 2
3, input to the modulation / demodulation circuit 21 via the input / output control circuit 22. The signal analogized in the modulation / demodulation circuit 21 is transmitted as an electromagnetic wave through the antenna 8 and responds to the wireless device main body 30. Next, a second embodiment of the present invention will be described. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIG. 3, a wireless card 1 according to the second embodiment of the present invention comprises a substrate 2 on which electronic components 4 such as a CPU, a resistor, a capacitor, an LSI and a battery are mounted. ing. The printed wiring 6 is formed on the upper surface 2 a of the substrate 2, the electronic component 4 is soldered, and the information processing circuit 5 is formed. The ground terminal 16 for grounding the information processing circuit 5 is electrically connected to the information processing circuit 5 and is formed on the upper surface 2a.

An antenna 8 for transmitting and receiving radio information by electromagnetic waves to and from an information processing apparatus installed outside is provided in a region on the upper surface 2a of the substrate 2 which does not overlap the mounting region of the electronic component 4. The antenna 8 is connected to the information processing circuit 5.

A ground portion 18 is provided over the entire surface of the lower surface 2b of the substrate 2 opposite to the antenna 8.
The ground portion 18 is formed in a conductive sheet shape and is electrically connected to the ground terminal 16 to ground the information processing circuit 5.

A lower exterior plate 12 is provided outside the ground portion 18 with respect to the base body 2. Lower exterior plate 12
Is particularly formed of a conductive material such as metal. If the ground portion 18 and the lower exterior plate 12 are electrically connected, they can also function as the ground portion of the information processing circuit 5. Further, the lower exterior plate 12 has a function of covering the entire lower surface of the wireless card 1 and protecting the inside of the wireless card 1 from external pressure.

On the other hand, above the upper surface 2a of the substrate 2, an upper exterior plate 19 made of resin is provided.
The upper exterior plate 19 includes plastic frames 13a, 13
It is fixed to the lower exterior plate 12 via b and surrounds the electronic component 4 and the antenna 8 provided inside.

As described above, the wireless card 1 of the present invention
Since one of the upper and lower exterior plates is made of a conductive material such as metal, the strength against bending increases. Therefore, the circuit formed inside the wireless card 1 is not broken, and the failure caused by the external pressure of the electronic components mounted inside is eliminated. Further, the electronic component is grounded from the conductive exterior plate through the human body.

Further, in the first embodiment, a sufficient space is provided between the grounding portion (upper exterior plate 12) and the antenna 8 via the spacer 10, so that the substrate 2 or It is not necessary to form the spacer 10 from an expensive material having a high dielectric constant. That is, when there is a sufficient distance between the two, the substrate 2 and the spacer 10 can be formed using an inexpensive material having a relatively low dielectric constant, so that the material cost can be reduced. The present invention is not limited to the above embodiments, and can be modified without changing the content of the invention.

[0028]

As described in detail above, according to the non-contact information transmission device of the present invention, one of the exterior surfaces provided on both sides of the device for protecting the electronic components installed therein is made of a conductive material such as metal. It is formed by the material.

Therefore, the electronic parts mounted in the device are protected, and the disconnection and the failure of the circuit are eliminated. Further, by connecting a part of the exterior surface to the electronic component, the exterior cotton can act as a grounding portion.

Further, since a space wider than at least the thickness of the substrate and the electronic component is formed between the conductive exterior surface and the information transmitting / receiving unit, the grounding unit and the information transmitting / receiving unit are formed of the base as in the conventional case. Compared to the case where it is provided on both sides, it is not necessary to use an expensive material with a high dielectric constant as the substrate material,
The cost of substrate material is reduced.

[Brief description of drawings]

FIG. 1 (A) is a cross-sectional view showing a wireless card according to a first embodiment of the present invention, and FIG. 1 (B) shows a wireless card according to the first embodiment of the present invention. FIG.

FIG. 2 is a schematic diagram showing an information processing circuit incorporated in the wireless card of the present invention.

FIG. 3 is a sectional view showing a wireless card according to a second embodiment of the present invention.

[Explanation of symbols]

1 ... Wireless card, 2 ... Board, 4 ... Electronic component, 5 ... Information processing circuit, 8 ... Antenna, 10 ... Spacer, 12 ... Upper exterior plate

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location G06K 19/077

Claims (4)

[Claims] 1. An information transmitting / receiving unit that transmits and receives wireless information, and information that receives wireless information from the information transmitting / receiving unit, performs arithmetic processing on the wireless information, and transmits the arithmetic result to the information transmitting / receiving unit. A processing unit, a substrate having a mounting unit on which an electronic component that constitutes the information processing unit is mounted, and a grounding unit that grounds the information processing unit are provided. A non-contact information transmission device, characterized in that a conductive protection member is provided. 2. An information transmitting / receiving unit for transmitting and receiving wireless information, and information for receiving the wireless information from the information transmitting / receiving unit, performing arithmetic processing on the wireless information, and transmitting the arithmetic result to the information transmitting / receiving unit. A processing unit, a substrate having a mounting surface on which an electronic component forming the information processing unit is mounted, and a grounding unit for grounding the information processing unit are provided, and the substrate is provided outside the grounding unit. A non-contact information transmission device, characterized in that a conductive protection member is provided. 3. An information transmitting / receiving unit for transmitting and receiving wireless information, and information for receiving wireless information from the information transmitting / receiving unit, performing arithmetic processing on the wireless information, and transmitting the arithmetic result to the information transmitting / receiving unit. A processing unit, a substrate having a mounting surface on which electronic components that form the information processing unit are mounted, and a grounding unit that includes a conductive protection member that protects the electronic components from external pressure and that grounds the information processing unit. A non-contact information transmission device having: 4. The grounding portion has an area larger than that of the substrate and is provided over the entire surface of either the mounting surface or the back surface of the substrate. Contactless information transmission device.