KR19990036163U - Lead device of integrated circuit card - Google Patents

Abstract

The present invention relates to a lead device of an integrated circuit card, comprising: a coil antenna for radiating or absorbing radio waves; A duplexer for performing transmission and reception switching; A low pass filter for removing noise of the received signal; A receive amplifier for amplifying the signal filtered by the low pass filter; A demodulation circuit unit for detecting data in the received carrier frequency signal; A CPU which executes the processing represented by the program; A modulation circuit unit which synthesizes and modulates data to be transmitted and a carrier frequency; A transmission amplifier for amplifying the signal modulated by the modulation circuit section; A low pass filter for removing noise of the amplified signal; A memory for storing data to be transmitted and received; A voice circuit unit for generating a voice signal; A speaker for transmitting a voice signal generated by the voice circuit unit; A display unit driver circuit for driving the display unit according to the control signal; And a display unit for displaying data. The present invention can increase the user's convenience by displaying the balance by reading the toll data recorded in the integrated circuit card.

Description

Lead device of integrated circuit card

The present invention relates to a lead device of an integrated circuit card, and more particularly, writes to an integrated circuit card when a card having an integrated circuit chip including a memory and a control device is used as a debit card. The present invention relates to an integrated circuit card reading apparatus for reading out data and displaying remaining balance.

In general, an integrated circuit card has been developed as a portable storage medium in which an integrated circuit chip having control elements such as an erasable nonvolatile memory and a CPU is incorporated.

This type of integrated circuit card stores a password number as key information (key data) in a memory built in the card, and when a password number is input from the outside, it is stored with a registered password number stored in the memory. Contrast within itself and determine the subsequent accessibility and impossibility of the memory according to the collation result. In particular, in this case, since the password number in the memory cannot be read from outside, only the person who knows the password number can access the memory.

However, when an integrated circuit card is used as a substitute for a ticket for paying a bus or subway, the above code number is not recorded and the CPU in the integrated circuit card is started by a start signal and the data in the memory is read. Will be sent to.

However, in the related art, there is no device for reading and displaying the charge data recorded in the integrated circuit card, so that the user cannot check the balance.

Therefore, the present invention has been made to solve such a problem, and an object of the present invention is to provide an apparatus for reading and displaying data recorded in an integrated circuit card when a card having an integrated circuit chip is used as a debit card. To provide.

The present invention for achieving the above object is a coil antenna for emitting or absorbing radio waves; A duplexer for performing transmission and reception switching; A low pass filter for removing noise of the received signal; A receive amplifier for amplifying the signal filtered by the low pass filter; A demodulation circuit unit for detecting data in the received carrier frequency signal; A CPU which executes the processing represented by the program; A modulation circuit unit which synthesizes and modulates data to be transmitted and a carrier frequency; A transmission amplifier for amplifying the signal modulated by the modulation circuit section; A low pass filter for removing noise of the amplified signal; A memory for storing data to be transmitted and received; A voice circuit unit for generating a voice signal; A speaker for transmitting a voice signal generated by the voice circuit unit; A display unit driver circuit for driving the display unit according to the control signal; And a display portion for displaying data.

The present invention can increase the user's convenience by displaying the balance by reading the toll data recorded in the integrated circuit card.

1 is a block diagram showing an integrated circuit card and a lead apparatus of an integrated circuit card according to the present invention.

FIG. 2 is a block diagram showing the configuration of the integrated circuit card of FIG.

3 is a plan view showing the arrangement of the coil antenna in the lead device of the integrated circuit card of FIG.

Explanation of symbols for the main parts of the drawings

10: integrated circuit card 20: coil antenna

30: duplexer 40,100: low pass filter

50: receiver amplifier 60: demodulation circuit unit

70: CPU 80: modulation circuit section

90: transmit amplifier 110: memory

120: audio circuit 130: speaker

140: display unit driving circuit 150: display unit

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 shows an integrated circuit card and a lead apparatus of an integrated circuit card according to the present invention.

1 shows an integrated circuit card 10, a coil antenna 20 that radiates or absorbs radio waves, a duplexer 30 that performs transmission and reception switching, and a low pass filter that removes noise of a received signal. 40, a reception amplifier 50 for amplifying the filtered signal, a demodulation circuit section 60 for detecting data in the received carrier frequency signal, a CPU 70 for executing a process represented by a program, and transmission A modulation circuit unit 80 for synthesizing and modulating the desired data and carrier frequency, a transmission amplifier 90 for amplifying the modulated signal, a low pass filter 100 for removing noise of the amplified signal, and data transmitted and received Memory 110 for storing the voice signal, a voice circuit unit 120 for generating a voice signal, a speaker 130 for transmitting the generated voice signal, and a display unit driving circuit 140 for driving the display unit 150 according to a control signal. Display data Is provided as a display unit 150.

The operation of the lead apparatus of the integrated circuit card provided as above will be described.

First, when the CPU 70 generates a start signal to be transmitted from the memory 110 and applies it to the modulation circuit unit 80, the modulation circuit unit 80 modulates the predetermined carrier frequency signal and then transmits the modulation signal to the transmission amplifier 90. After the amplification by the low pass filter 100 and the duplexer 30 through the coil antenna 20 and outputs to the integrated circuit card (10).

Thereafter, the response signal to the start signal transmitted through the above process is output from the integrated circuit card 10 and absorbed by the coil antenna 20 to receive the amplifier 50 through the duplexer 30 and the low pass filter 40. When the amplified circuit unit 60 is amplified by the demodulation circuit unit 60, the demodulation circuit unit 60 detects data from the received signal and outputs the data to the CPU 70. When the response signal is input, the CPU 70 receives the integrated circuit card from then on. After reading the data stored in (10), the control unit outputs a control signal to the display unit driver circuit 140 to drive the display unit driver circuit 140, and then displays the balance on the display unit 150, while the audio circuit unit 120 Drives and generates a voice signal corresponding to the read data is sent through the speaker 130.

FIG. 2 illustrates the integrated circuit card shown in FIG. 1.

As shown in FIG. 2, the integrated circuit card is composed of a CPU 11, a data memory 12, a program memory 13, and a coil antenna 14 for controlling the operation.

The CPU 11, the data memory 12, and the program memory 13 consist of one integrated circuit chip (or a plurality of integrated circuit chips) and are located in the integrated circuit card main body.

The program memory 13 stores a control program of the CPU 11 including a subroutine, and the data memory 12 is used for storing various data, for example, EEPROM (Electrically Erasable and Programmable). ROM) and an erasable nonvolatile memory.

3 is a diagram illustrating a coil antenna of the lead device of the integrated circuit card of FIG. 1.

With reference to Figures 2 and 3 will be described in detail the operation of the lead device of the integrated circuit card according to an embodiment in which the lead device of the integrated circuit card according to the present invention is installed in a subway vehicle.

When the lead device of the integrated circuit card is vertically installed at a height of about 1.2M on the pillar in the subway vehicle, the CPU 70 always starts the start signal for starting the integrated circuit card 10 from the modulation circuit unit 80 from this time. After modulating to a frequency, the amplification is performed by the transmission amplifier 90 and then radiated through the coil antenna 20 through the low pass filter 100 and the duplexer 30.

At this time, when the user of the integrated circuit card 10 approaches the lead apparatus to check the remaining balance, the CPU 11 of the integrated circuit card 10 is activated by the start signal, and the CPU 11 thus started. The response signal is sent to the lead apparatus through the coil antenna 14, and immediately afterwards, the data stored in the data memory 12 is also sent to the lead apparatus.

Through the above process, the response signal and the data signal are absorbed by the coil antenna 20, amplified by the receiving amplifier 50 through the duplexer 30 and the low pass filter 40, and then restored by the demodulation circuit unit 60. When applied to 70, the CPU 70 processes the data signal to display the remaining balance on the display unit 150, while generating the voice signal from the voice circuit unit 120 and transmitting the same through the speaker 130.

The present invention can increase the user's convenience by reading the charge data recorded in the integrated circuit card and displaying the balance, and can also be used by the visually impaired by sending the balance out by voice.

Claims (1)

A coil antenna 20 which radiates or absorbs radio waves; A duplexer 30 connected to the coil antenna 20 to perform transmission and reception switching; A low pass filter 40 for removing noise of the signal received by the coil antenna 20; A reception amplifier (50) for amplifying the signal filtered by the low pass filter (40); A demodulation circuit (60) for detecting data in a carrier frequency signal received by the coil antenna (20); A CPU 70 for executing a process represented by a program; A modulation circuit unit 80 which synthesizes and modulates data to be transmitted and a carrier frequency; A transmission amplifier (90) for amplifying the signal modulated by the modulation circuit section (80); A low pass filter (100) for removing noise of the signal amplified by the transmission amplifier (90); A memory 110 for storing data transmitted and received connected to the CPU 70; A voice circuit unit 120 for generating a voice signal when voice data stored in the memory 110 is applied under the control of the CPU 70; A speaker 130 for transmitting a voice signal generated by the voice circuit unit 120; A display unit driver circuit 140 connected to the CPU 70 and operating according to a control signal; And a display unit (150) connected to the display unit driving circuit (140) to display data.