JPS59174982A - Electronic card - Google Patents

Abstract

PURPOSE:To display the content of the memory of an electronic card so as to confirm the content by installing a display device which displays the content of the memory to the electronic card. CONSTITUTION:A display 2 which is used for displaying the content of a memory and constituted of a liquid crystal cell and a code key 3 for inputting a secret number etc., are installed to the main body 1 of an electronic card. It is arranged that, only when the secret number inputted through the code key 3 coincides with the content of the memory previously stored by a user or through an external connecting terminal, the content of the memory is displayed on the display device 2. A CPU11 performs display control and memory control in accordance with a control program previously written in an ROM14 in response to the key inputs of akey input device 10. When the content of the memory is to be kept secret, it can be arranged that the content can be read only when the combination of numerals is depressed when the content is read out. Thus the electronic card can also be used as a secret card.

Description

[Detailed description of the invention] Technical field> The invention relates to a programmable memory and a driving LSI.
The present invention relates to an electronic card, and particularly to a novel electronic card capable of displaying the contents of a memory.

<Prior art> Conventionally, with electronic cards such as bank cards, if the user forgets the PIN number, not only is it impossible to confirm the forgotten PIN number, but even if the deposit amount is memorized, the user cannot recall it. It cannot be confirmed. Moreover, it is normal to be unable to write information.

<Object of the present invention> An object of the present invention is to obtain an electronic card that can display the memory contents stored in the electronic card and confirm the contents.

Another purpose of the shredder is to obtain an electronic card that can be used as a secret card that can keep the information stored in the memory secret.

Another object of the present invention is to provide an electronic card whose memory contents can be confirmed only when key information entered from the key and memory information stored in the memory match.

Further objects and features will become apparent from the following drawings and description of the embodiments. <Embodiment> Figure 1 is an external perspective view showing an embodiment of the electronic card of the present invention. A display 2 made up of a liquid crystal display (LCD) cell 414 for inputting information, and a code key 3 for inputting a code number (personal secret information) etc. are provided. For example, it consists of the keys ``A'', ``I'', ``TS'', and ``ENG'' as shown in the figure. digit, the "Engineering" key is a key for inputting the 1's digit.For example, if you want to input r1234J as a reciter, press the "A" key.
The recitation number can be input by pressing the ``i'' key twice, the ``tsu'' key three times, and the ``engine'' key four times. This is a read key for sequentially reading out the memory contents stored at 4.5t/'i.Read keys 4 and 5 can each read in the opposite direction.6I
This is an external connection terminal for inputting information from outside the ri and outputting information to the outside.

7 is a power ON or OFF key, 8 is an alpha key for inputting numeric data and alphabetic data.
This is the numeric link key. The figure shows the folding part for folding the ifi child-type card body 1 and storing it in a pocket or the like. Only when the memory contents match, the memory contents will be displayed on display 2.
It is configured so that it can be displayed.

FIG. 2 is a system block diagram showing a specific configuration of an electronic card according to the present invention.

In the figure, reference numeral 10 denotes a key manual device, which includes at least the aforementioned code key 3, read key 4.5, and alpha numeric key 8.

11 is a central processing unit C (abbreviated as CPU),
The CPU II performs display control and memory control in accordance with a control program written in advance in the ROMI 4 in response to key input from the key input device IO.

Further, memory control is performed by a control signal from an external connection terminal [6 in FIG. 1]. 16 is a battery power source, which always backs up at least the RAM 15. 15 is a RAM.

FIG. 3 shows the contents of a register (indicated by C) in CPUz 1 and RAMI 5. To explain the figure, C is a register in the CPU and counts a 4-digit numerical value.

In addition, XI to X4 are R that memorize a 4-digit recitation code.
Indicates the area within AM.

M is area #4 that stores various data in RAM, S is RA
The work area within M is ``戊''.

Next, the operation of the electronic card will be explained.

FIG. 4 is a flow chart of an example for explaining the operation of the electronic card.

First, when you turn on the power (7 in Figure 1), the RAMI S
The work area S within is cleared and initialized (n,).

Thereafter, the key is read (I2), and if there is human power for the key, processing corresponding to the key is performed (I3). For example, when the "A" key is pressed (n), unless the content of the most significant digit C1 of register C in the CPU II is 01=9 (n=), the content of C1 is counted up (
no).

However, if C1=9, 0 is input to register C (I7). If the “I” key is pressed, I/1 (nsL
Register C2 is counted up (ns~n01
).

Similarly, for the "tsu" key, the register C3 is counted up (not shown), and the "engine" key I''iC4 is counted up (n
12-n15). After setting the recitation code in this manner, press the "1" key or rjJ key (4, 5 in Figure 1) to determine if the recitation code matches the memory contents (X
=C) is performed (0□6 to n2□). In particular, the flag below indicates that the above code matches (n□7+n23)
After a match is made, the contents of the memo IJM are read out by operating the 1 key or 1 key (n2o, r n2
a).

Also, the control of the alphanumeric link (letter a) key (8 in Figure 1) is not shown in the flowchart.
However, by operating this key, memo information can be stored in area AK of RAMI 5. Note that XI, I2, Xs, I4, and M in the RAM area are written through the external connection terminal 6 (see Figure 1), so that the contents cannot be changed by key operations on the card. Is possible.

” The match between the memorized memorized code and the contents of the memorized memory is determined when the contents of the memory must be kept private, and when the owner presses a combination of numerical values, etc. memorized in advance when reading out the contents. It is possible to use it as a secret card by making it possible to read the contents of the memory.

Effects of the Present Invention> As explained above, according to the electronic card of the present invention, the memory contents can be displayed and confirmed.

It can also be used as a secret card.

[Brief explanation of drawings]

Figure 1 is an external perspective view showing one embodiment of the electronic card of the present invention, Figure 2 is a system block diagram showing the specific configuration of the same electronic card, and Figure 3 is a CPU and a FIG. 4, which is a diagram showing the RAM area, is a flowchart for explaining the operation of the electronic card. 1: Electronic card, 2: Display, 3: Code key,
4, 5: Read key.

Claims (1)

[Claims] 1. An electronic card comprising a programmable memory and a driving LSI, and further comprising a display for displaying the contents of the memory.