JP2002183678A - Information display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information display device, having the simple constitution applied to a system, for example, by a noncontact IC card in the information display device. SOLUTION: A memory 23 for data communication is also used as a display memory by a display means 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information display device and can be applied to, for example, a system using a non-contact type IC card. The present invention proposes an information display device having a simple configuration by using a memory for data communication as a display memory by a display unit.

[0002]

2. Description of the Related Art Conventionally, an IC card has been used for, for example, a commuter pass, a prepaid card, electronic money, or a membership card because various information can be safely recorded.

[0003] In a system using such an IC card, an IC card viewer, which is an information display device formed in substantially the same shape as the IC card and configured to display the contents of the IC card, is proposed. It has been made like that.

[0004]

By the way, in such an information display device, a small and simple configuration is desired on the assumption that the information display device is used in a portable manner. On the other hand, since an IC card can record a large amount of information, there is a possibility that the configuration of an information display device corresponding to such an IC card becomes complicated.

The present invention has been made in view of the above points, and is intended to propose an information display device having a simple configuration.

[0006]

According to the first aspect of the present invention, when data is communicated by the communication means, the display of the display means is controlled to be stopped so that the data is used in the memory for data communication. After acquiring the data recorded on the information recording medium by using the acquired data, the image data to be displayed on the display means is generated and recorded in the memory for data communication, and the display means is driven by the image data. The memory for data communication is also used as the memory for display by the display means.

[0007] During data communication by the communication means, the display by the display means is controlled to be stopped, and data recorded on the information recording medium is acquired using the memory for data communication. If the image data to be displayed is generated and recorded in the memory for data communication, and the display means is driven by this image data, if the memory for data communication is also used as the display memory by the display means,
Unnatural image display can be effectively avoided to reduce the memory capacity, and the overall configuration can be simplified accordingly.

[0008]

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

FIG. 1 is a block diagram showing an IC card system according to an embodiment of the present invention. In the IC card system 1, the recording of the IC card 3 can be confirmed by the IC card viewer 2, which is an information display device.

Here, the IC card 3 is used as a medium such as electronic money, a commuter pass, a prepaid card, a membership card, and the like, and can be updated by accessing by a reader / writer which is a dedicated access device. .
The IC card 3 is formed by laminating a wiring board on which an integrated circuit is arranged, and a plate material made of plastic or the like, and has a thin card shape as a whole. In the IC card 3, a loop antenna 5 is formed on this wiring board, and a modulation / demodulation circuit 6, a signal processing circuit 7, and a memory 8 are configured by an integrated circuit mounted on the board.

When the loop antenna 5 holds the IC card 3 close to the IC card viewer 2 and the reader / writer, the loop antenna 5 is coupled to the loop antenna 10 of the IC card viewer 2 to transmit the high frequency wave transmitted from the IC card viewer 2. While receiving the signal, it emits the modulated signal generated by the modulation / demodulation circuit 6.

The modulation / demodulation circuit 6 generates a power, a clock and the like necessary for the operation of the IC card 3 from the high frequency signal received by the loop antenna 5. Further, the modulation / demodulation circuit 6 operates using the power and the clock, and performs signal processing on the high-frequency signal received by the loop antenna 5. The modulation / demodulation circuit 6 performs a data processing (hereinafter referred to as a transmission data processing) D transmitted from the IC card viewer 2 and the reader / writer by this signal processing.
(R → C) is demodulated and output to the signal processing circuit 7. A transmission signal is prompted by the transmission data sequence D (R → C), and a modulation signal based on an ASK modulation signal is generated by a data sequence (hereinafter referred to as a response data sequence) D (C → R) input from the signal processing circuit 7. Then, the loop antenna 5
To radiate a modulated signal.

The memory 8 stores mutual authentication data, control programs, and the like necessary for the operation of the IC card 3. The memory 8 stores various data corresponding to the purpose of use of the IC card 3 by recording a transmission data string under the control of the signal processing circuit 7. That is, when the IC card 3 is used as a medium for electronic money or when it is used as a prepaid card, data such as a balance and a use history are recorded. When the IC card 3 is used as a medium of a commuter pass, data such as a validity period and a boarding section are recorded. When the IC card 3 is used as a medium for a membership card, data such as a member number and a use history are recorded.

The signal processing circuit 7 operates with the power and clock generated by the modulation / demodulation circuit 6 to transmit the transmission data string D (R
→ C) is analyzed, and if necessary, the data held in the memory 8 is output to the modulation / demodulation circuit 6 as a response data string D (C → R).

The signal processing circuit 7 exchanges data with the IC card viewer 2 and the reader / writer by executing the processing procedure recorded in the memory 8 by mutual authentication. In this data exchange, the signal processing circuit 7 transmits and receives a data sequence by an encryption process using a predetermined key, thereby ensuring reliability. Thus, the IC card 3 records the amount of electronic money, the payee, the amount of payment, and the like, and can be used as various information recording media.

The IC card viewer 2 is formed in a card shape by housing a substrate on which an operation battery 20 and an integrated circuit are mounted in a case. As shown in FIG. 2, the IC card viewer 2 starts operating by pressing a power switch 11 disposed on the surface, and the built-in loop antenna 1
0 is driven to start the operation of the IC card 3 that is held close to the IC card 3, and a mutual authentication process is performed with the IC card 3. Further, predetermined data is loaded from the IC card 3 and held.

The IC card viewer 2 responds to the operations of the scroll operators 12A to 12D in the up, down, left and right directions, the history, and the remaining balance operators 13, 14, and records the IC card 3 thus held. The information is displayed on the display unit 24 using a liquid crystal display panel. With this, IC card viewer 2
Is carried so that the information recorded on the IC card 3 can be confirmed.

In the IC card viewer 2 (FIG. 1), the loop antenna 10 is driven by a modulation / demodulation circuit 21 to transmit a predetermined high-frequency signal.
Receive the modulated signal transmitted from the.

The modulation / demodulation circuit 21 processes the modulated signal received by the loop antenna 10 to demodulate the response data sequence D (C → R) sent from the IC card 3 and outputs it to the information processing section 22. . Further, a modulation signal based on an ASK modulation signal is generated from the transmission data sequence D (R → C) input from the information processing unit 22, and the loop antenna 10 is disturbed by the modulation signal.

The memory 23 records mutual authentication data, control programs, and the like necessary for the operation of the IC card viewer 2. The memory 23 forms a work area of the information processing unit 22, and the IC card 3 is controlled by the information processing unit 22.
The received response data is retained. Further, the image data generated from the response data string thus held is held and output to the display unit 24. Thereby, the memory 23
Constitutes a communication buffer, which is a memory for data communication, and switches functions under the control of the information processing section 22 to constitute a display memory by the display means.

The display section 24 is composed of a dot matrix type liquid crystal display panel. Each of the dots is driven by a drive circuit (not shown) in accordance with data of a display memory constituted by the memory 23, so that the IC card 3 is driven. Can be displayed in characters or the like.

The information processing section 22 includes an IC card viewer 2
And processes various data exchanged with the IC card 3. That is, the information processing unit 22
As shown in (1), the operation shifts from step SP1 to step SP2 by pressing the power switch 11, and the operation is started.

Subsequently, the information processing section 22 proceeds to step SP3
And the operation of the display unit 24 is started, and the subsequent step S
At P4, a predetermined reading screen is displayed. Here, this reading screen is configured by, for example, displaying a message of “communicating”. The information processing section 22 expands the predetermined bitmap data in a predetermined area of the memory 23 and drives the display section 24 with the data in this area, in this case, a part of the memory 23 is The display unit 24 is driven by using it as a memory. Subsequently, in step SP5, the information processing section 22 performs a predetermined time (for example, 1
Seconds), so that the reading screen can be confirmed by the user.

Subsequently, the information processing section 22 proceeds to step SP6
The display on the display unit 24 is stopped, and a predetermined area of the memory 23 used for display is allocated to the communication buffer.

Further, the information processing section 22 proceeds to step S
At P7, an attempt is made to read information from the IC card 3. Here, the information processing section 22 instructs the modulation / demodulation circuit 21 to drive the loop antenna 10, and further instructs the modem 21 to transmit a polling command. When the IC card 3 is held closer to these, the operation of the IC card 3 is started and a response is called to the IC card 3. When a response to the polling command is detected by the modulation / demodulation circuit 21, the information processing unit 22 operates the modulation / demodulation circuit 21 so as to execute a mutual authentication process with the IC card 3 which has issued the response. Control. Further, when the mutual authentication is successful, it instructs the modulation / demodulation circuit 21 to transmit a read command, and selectively stores only necessary data in the response data string received by the modulation / demodulation circuit 21 into the memory 2.
Record in 3. It should be noted that such a process of reading information from the IC card 3 is performed when the IC card 3 is correctly held close to the IC card viewer 2.
It is completed in a period of 0 [msec].

When reading of information is attempted in this manner, the information processing section 22 proceeds to step SP8,
After the power is turned on, it is determined whether or not a predetermined time has elapsed and a time-out period has elapsed. If a negative result is obtained here, the information processing section 22 proceeds to step SP9, and determines whether or not the information has been successfully read. Here, if a response to the polling command is not obtained, if mutual authentication fails, or if information acquisition is incompletely completed, the information processing unit 22 obtains a negative result and returns to step SP3 Return to As a result, the information processing section 22 determines in steps SP3-SP4-SP5 for a predetermined period until a positive result is obtained in step SP8.
The information recorded in the IC card 3 is loaded while switching the predetermined area of the memory 23 between the communication buffer and the display memory by repeating the processing procedure of -SP6-SP7-SP8-SP9-SP3.

In this manner, such repetition is a case where the power switch 11 of the IC card viewer 2 is operated even though the IC card 3 is not held close to the IC card viewer 2. For example, this is due to a user's erroneous operation. Thereby, the information processing unit 2
In step 2, if a positive result is obtained in step SP8, the process proceeds to step SP10, in which the power is turned off.
To end the processing procedure.

On the other hand, if a positive result is obtained in step SP9, the information processing section 22 proceeds to step SP12, where the operation of the display section 24 is started. Further, the information processing section 22 releases a predetermined area of the memory 23 used for the communication buffer to the display memory.

Subsequently, the information processing section 22 proceeds to step SP1
Then, the process proceeds to step 3, where data consistency is detected, and it is determined whether or not desired data has been correctly loaded. Here, the consistency of this data is determined by checking the CRC of the read data,
This is executed by processes such as ID check and security authentication.

If a negative result is obtained in step SP13, the information processing section 22 proceeds to step SP14 and displays an error display on the display section 24. Here, as in the case of the above-described read screen, the error is displayed by expanding the bitmap data in the display memory, which is a partial area of the memory 23.

Further, the information processing section 22 proceeds to step SP15 and turns off the power supply.
The process proceeds to 1 and the processing procedure is terminated.

On the other hand, if a positive result is obtained in step SP13, the information processing section 22 proceeds to step SP16, executes information display processing, and then proceeds to step SP11 to end this processing procedure. Here, this information display processing is performed on the initial screen (for example, I
When the C card 3 is used as a medium for electronic money, the display shows the balance of the electronic money, etc.), and the user switches the display by operating the operating elements 12A to 12D, 13, and 14 to change the display. This is a process of displaying various kinds of loaded information. Also in this case, similarly to the case of the reading screen, the information processing unit 22 drives the display unit 24 by expanding the bitmap data corresponding to the information to be displayed in the display memory which is a partial area of the memory 23. Displays such information. When the power switch 11 is operated by the user, the information display process ends.

According to the above configuration, when communicating with the IC card, the screen display memory is used as the communication buffer, so that the capacity of the memory mounted on the IC card viewer 2 can be reduced accordingly. The configuration can be simplified and the size can be reduced. In addition, when the display is used as a communication buffer in this way, by stopping the display on the display unit, it is possible to effectively avoid inconvenience such as display of an unnatural image.

(2) Other Embodiments In the above embodiment, the case where the present invention is applied to a non-contact type IC card system has been described.
The present invention is not limited to this, and can be widely applied to a system using a contact type IC card.

In the above embodiment, the case where the present invention is applied to an IC card viewer which is a display-only device has been described. However, the present invention is not limited to this, and a reader / writer which is an IC card access device is used. May be applied.

[0036]

As described above, according to the present invention, an information display device having a simple configuration can be obtained by using a memory for data communication as a display memory by the display means.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an IC card system according to an embodiment of the present invention.

FIG. 2 is a plan view showing the IC card viewer of FIG. 1;

FIG. 3 is a flowchart illustrating a processing procedure of an information processing unit in the IC card viewer of FIG. 1;

[Explanation of symbols]

1 IC card system, 2 IC card viewer, 3 IC card, 22 Information processing unit, 23
Memory, 24 display unit

Claims (2)

[Claims] 1. An information display device for accessing a separate information recording medium and displaying contents recorded on the information recording medium, comprising: communication means for accessing the information recording medium and reading the data; Display means for displaying the contents recorded on the recording medium; and control means for processing the data acquired by the communication means and driving the display means, wherein the control means is configured to perform data communication by the communication means. Controlling the suspension of the display by the display means, acquiring data recorded on the information recording medium using a memory for data communication, and generating image data to be displayed on the display means from the acquired data. And recording the data in the memory for data communication, and driving the display unit with the image data, thereby displaying the memory for data communication on the display. Information display device characterized in that it also serves to display memory by stage. 2. The information recording medium according to claim 1, wherein the information recording medium is a non-contact type IC card.
An information display device according to item 1.