JPH04197688A - Portable memory medium - Google Patents

Abstract

PURPOSE:To ensure the reading of magnetic stripes by providing only wiring on a part disposed under the magnetic stripes of a substrate. CONSTITUTION:An IC card is provided with a frame 6. In a space formed by the frame 6, a substrate 7 formed by mounting various electronic parts thereon is provided. On the substrate 7, a wiring 14 is printed for electrically connecting the various electronic parts with each other. The IC card is constructed by bonding the frame 6 with an outer plate. The both are bonded so that IC chips 8 and an LCD 9 on the substrate 7 coincide with an opening part 4 and a window 5 of the outer plate. At this time, magnetic stripes (referred as MS from now on) 2 provided on the outer plate 1 exist on a position shown by a broken line on the substrate 7. Namely, no electronic parts exist under the MS 2 but the wiring 14 connecting the IC chips 8 to the LCD driver 10. Therefore, there is no possibility that irregularities may occur on the MS of the outer plate 1 when the frame 6 is bonded with the outer plate 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a portable storage medium such as an IC card.

(Prior Art) To explain a conventional portable storage medium using a multi-function IC card as an example, the multi-function IC card consists of an IC chip with a built-in control CPU, memory, etc., and a liquid crystal display (LCD).
It is constructed by sandwiching a board on which a keyboard, crystal resonator, etc. are mounted between metal or resin exterior plates. A magnetic stripe (hereinafter referred to as MS) on which magnetic information such as an identification number of the card holder is written is provided on the resin exterior plate.

Reading of the magnetic information recorded in the MS is performed using an IC.
This is done by passing the MS provided on the card exterior plate through an MS reader/writer. Here, FIG. 3 shows a diagram of a conventional IC card with the exterior plate removed. The resin exterior plate supports electronic components such as LS on the board under the exterior plate.
The surface has undulations that correspond to the undulations of the I and the crystal oscillator. In a conventional IC card, when an exterior plate is attached, the MS is located in the part indicated by the broken line in FIG. 3. In other words, since electronic components are provided below the MS, the MS
If there are undulations on the surface of the MS and the magnetic information stored in the MS is to be read, the reading output of the MS by the lvI S reader/writer will fluctuate according to the undulations of the electronic components on the board below the MS. There was a risk that accurate information could not be read.

In addition, in order to solve this problem, if all electronic components including the board are removed from under the MS, the board will have to be made smaller, and the wiring connecting each electronic component will need to be reduced. There was a problem in that the density was high and it was difficult to route the wiring.

(Problems to be Solved by the Invention) As described above, in conventional portable storage media, when reading magnetic information stored in a magnetic stripe provided on an exterior plate, a magnetic stripe reader/writer must be used to read magnetic information stored on a magnetic stripe provided on an exterior plate. There was a problem in that the reading output fluctuated in accordance with the undulations of the electronic components on the board beneath the magnetic stripe, making it impossible to read accurately.

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, it is an object of the present invention to provide a portable storage medium that can reliably read a magnetic stripe without causing any undulations on the magnetic stripe.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention provides a method in which both surfaces of a board on which electronic components are mounted and have wiring for the electronic components are sandwiched between two exterior plates. In a portable storage medium having a magnetic stripe on at least one of the exterior plates, a portion of the substrate located below the magnetic stripe includes:
It is characterized in that only wiring is provided.

(Function) On the board of the portable electronic device, only wiring is arranged without placing any electronic components in the part corresponding to the position of the magnetic stripe on the exterior board.

(Example) Hereinafter, an example in which the portable storage medium of the present invention is applied to a multifunctional IC card will be described in detail with reference to the drawings.

First, FIG. 2 shows an external view of the surface of the exterior plate 1 of the multifunctional IC card of this embodiment. The exterior plate 1 is made of resin, and on this exterior plate 1 there is a magnetic stripe (hereinafter referred to as MS).
2 is provided. This MS2 is to which magnetic information is written and read by an MS reader/writer (not shown). Furthermore, various keys are printed on the exterior plate 2 at positions corresponding to a keyboard module 11 to be described later, forming a keyboard 3.

Through this keyboard 3, the user can input various information. Furthermore, the exterior plate 1 has an opening 4 for exposing a contact portion of an IC chip 8, which will be described later. Further, a window 5 is provided on the exterior plate 1 so that a liquid crystal display (hereinafter referred to as LCD) 9, which will be described later, is visible from the outside.

Next, FIG. 1 shows an external view of the IC card without the exterior plate 1 attached. The IC card has a frame 6 made of hard resin, and a board 7 on which various electronic components are mounted in the space formed by the frame 6.
have. On this board 7, there is an IC chip 8 containing a CPU for controlling the entire IC card, a memory for storing various information, an LCD 9 for displaying the contents of the memory, and an LCD driver for driving the LCD 9. 10. A keyboard module 1 constituting a keyboard as a human power means; a crystal oscillator 12 for supplying a clock frequency to the CPU; a battery 13 for supplying power to each electronic component constituting the IC cart; etc. have been implemented. Furthermore, wiring 14 for electrically connecting various electronic components is printed on the substrate 7.

Now, an IC card is constructed by bonding a frame 6 shown in FIG. 1 and an exterior plate 2 shown in FIG. 2. Here, the IC chip 8 and LCD 9 on the substrate 7 are bonded together so that they are aligned with the opening 4 and window 5 of the exterior plate. At this time, the MS2 provided on the exterior plate 1
comes to exist on the substrate 6 at the position indicated by the dotted line in FIG.

That is, there are no electronic components under the MS2, only the wiring 14 that connects the IC chip 8 and the LCD driver 10, so even if the flame roller and the exterior board 1 are glued together, the exterior No undulations occur on MS2 of plate 1.

As described in detail above, the multifunctional IC cart of this embodiment has M
Since there are no undulations on the S2, when reading magnetic information stored in the MS2, the reading output of the MS2 by the MS reader/writer does not fluctuate.
There is no risk of reading errors occurring. Further, by arranging the wiring 14 on the portion of the substrate 6 located below the MS 2, the wiring density on the substrate 6 can be reduced, and the wiring on the substrate 6 can be routed easily.

[Effects of the Invention] As described above, according to the present invention, there is no undulation on the magnetic stripe, so the reading output of the magnetic stripe does not fluctuate, and furthermore, since the wiring is placed under the magnetic stripe, the wiring on the board is A low density portable storage medium can be provided.

[Brief explanation of the drawing]

Figures 1 and 2 are for explaining this embodiment.
Figure 1 is an external view of the multi-function IC card with the exterior plate removed, Figure 2 is an external view of the exterior plate of the multi-function IC card,
FIG. 3 is a diagram for explaining a conventional example. 1...Exterior plate 2...Magnetic stripe 6.
... Frame 7 ... Board 8 ... IC chip 9 ... LCD 14 ... Wiring 11 ... Optional equipment agent Patent attorney Nori Chika Yukiyuki Yamashita - Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] A portable storage medium comprising a board on which electronic components are mounted and wiring for the electronic components, both sides of which are sandwiched between two exterior plates, and at least one of the exterior plates has a magnetic stripe. A portable storage medium characterized in that only wiring is provided in a portion located below the magnetic stripe.