JPH04286089A - Ic card system - Google Patents

Abstract

PURPOSE:To shorten waiting time for data reading by changing the transfer speed in the transfer interface with the initial declaration information of an IC card and transferring data at transfer speed for the IC card. CONSTITUTION:An information decoding part 205 takes out the transfer speed information by decoding the initial declaration information from an IC card 100 through a transfer interface 204 and gives it to a speed setting part 206. The speed setting part 206 selects the transfer speed of the transfer interface 204 from the supplied transfer speed information. A controller 201 sets the transfer speed of a data transfer modem 207 with the transfer speed information supplied from the information decoding part 205 so as to transfer data with a center side. Then, the owner of the IC card 100 can receive a service at a high speed. Thus, the user can shorten the time for data reading.

Description

[Detailed description of the invention]

[Purpose of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an IC card system applied to various online service systems.

0002

[Prior Art] In a conventional IC card system, when an IC card is set (inserted) into a terminal device, initial declaration information called answer to reset data is sent from the IC card, and after this, the IC card The data within is read.

[0003] However, the data transmission speed between the IC card and the terminal device is fixed at, for example, 9,600 bps, and there is a problem in that the user has to wait several seconds or more to read the data. Furthermore, with the diversification of IC cards and technological improvements, there is a possibility that IC cards with higher data transmission speeds will be produced, and a system that can handle this is required.

0004

[Problem to be solved by the invention] As mentioned above, the conventional I
According to the C card system, the data transmission speed between the IC card and the terminal device was fixed, making it impossible to diversify the IC cards and causing users to have to wait for data to be read. There was a problem that

The present invention was made in view of the problems of the conventional IC card system, and its purpose is to
To provide an IC card system that can vary the data transmission speed between a card and a terminal device, can diversify IC cards, and can reduce the time a user has to wait to read data. It is to be. [Structure of the invention]

[0006]

[Means for Solving the Problems] The present invention includes a memory storing initial declaration information, a serial interface,
an IC card comprising: a processor that sends initial declaration information stored in the memory via the serial interface when a terminal is activated;

0007
] When the IC card is set, a transmission interface that performs data transmission between the serial interface and the serial interface at one transmission speed among a plurality of transmission speeds detects that the IC card is set, and transmits data at a predetermined rate. a terminal device comprising a transmission rate control means for activating a terminal of the IC card in a sequence and controlling a transmission rate of the transmission interface based on the initial declaration information sent from the IC card; The IC card system was configured to include the following.

[0008])

[Operation] According to the above configuration, the transmission speed at the transmission interface can be changed using the initial declaration information as a key, and the IC
Data transmission processing is performed at a transmission speed that matches the card.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of the present invention. In the figure, 100 indicates an IC card. IC
The card 100 includes a microprocessor 101, R
It is equipped with an OM 102, a RAM 103, and a serial interface 104, and may also be equipped with an LCD 105 and a keyboard 106.

Reference numeral 200 denotes a terminal device, which is equipped with a controller 201 , a power source 202 , a clock generation source 203 , a transmission interface 204 , an information decoding section 205 , a speed setting section 206 , and a data transmission modem 207 . The serial interface 104, transmission interface 204, and data transmission modem 207 are, for example,
Data transmission is possible at either 9600 bps or 19.2 Kbps. The information decoder 205 decodes initial declaration information (A.T.R data to be described later) received from the IC card 100 via the transmission interface 204 , extracts transmission rate information, and provides it to the rate setting unit 206 . The speed setting unit 206 sets the data transmission speed of the transmission interface 204 to either 9600 bps or 19.2 Kbps based on the given transmission speed information. The controller 201 also controls the data transmission modem 20 based on the transmission speed information given from the information decoder 205.
7. Switch the transmission speed. A Vcc (power supply) line and an RST (
reset) line, CLK (clock) line, I/O
(input/output data) lines and GND (ground) lines, and the terminals of these lines are activated in the sequence shown in FIG. 2 when the controller 201 detects insertion of the IC card 100 with a sensor (not shown). conduct. That is, when the IC card 100 is inserted at time t, the power and clock are first applied, and the IC card 100 is inserted.
00 is activated. Next, the controller 20
A reset signal is sent from 1, and the microprocessor 101 and serial interface 104 are reset. Such operations are shown in steps 401 to 403 of the operation flowchart of the terminal device 200 in FIG.

Reset microprocessor 101
ANSWER TO RESET (A.T.R) based on the initial program in ROM102
Send data (Figure 3). At this time, the serial interface 104 and the transmission interface 204 transmit data at a standard transmission rate of 9600 bps. This A. T. In the terminal device 200 that received the R data (404 in FIG. 4), the information decoding unit 205 reads the A.R data as shown in FIG. T. The transmission speed information of the A.R data is decoded and detected (405 in FIG. 4) and sent to the speed setting section 206. T. Give R data to the controller 201. A. T. In addition to transmission speed information, the R data includes card attribute data such as the transmission format of the IC card 100. T. R data is stored in ROM102.

[0012] The speed setting section 20 receives the transmission speed information.
6 controls the transmission interface 204 to a corresponding speed (for example, 19.2 Kbps) (FIG. 4).
406). Next, the controller 201 transmits data to and from the microprocessor 102 via the information decoding section 205, the transmission interface 204, and the serial interface 104, based on the sent information. In other words, you can send information about necessary services, and
The data stored in M103 (shopping list information, etc.) is read out (407 in FIG. 4). The data transmission rate at this time is 19.2 Kbps.

[0013] Note that when the service type information of the IC card 100 is such that the terminal device 200 is connected online to the center side to receive the service (for example, it indicates that information only available at the center will be provided). In some cases), the controller 201 uses the information decoding unit 2
The transmission speed information of the data transmission modem 207 is set using the transmission speed information given from 05, and data transmission is performed with the center side. In this way, the person carrying the IC card 100 can receive services at high speed.

Furthermore, in this embodiment, A. T. Although a part of the R data is assigned to the transmission speed information, the transmission speed may be changed by the card attribute information itself without providing any special transmission speed information.

[0015]

[Effects of the Invention] As explained above, according to the present invention, I
The transmission speed at the transmission interface can be changed using the initial declaration information held by the C card, making it possible to transmit data at a transmission speed that matches the IC card, making it possible to diversify IC cards, and to increase the user's The time spent waiting for data to be read can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is a diagram showing a terminal activation sequence performed in an embodiment of the present invention.

FIG. 3 is a diagram showing a data format of initial declaration information transmitted in an embodiment of the present invention.

FIG. 4 is a flowchart for explaining the operation of an embodiment of the present invention.

[Explanation of symbols]

100...IC card
101...Microprocessor 102...ROM
103...RAM104...Serial interface 105...LCD106...Keyboard 200
...Terminal device 201 ...Controller
202...Power supply 203...Clock generation source 204...Transmission interface 205...Information decoding section
206...Speed setting section 207...Data transmission modem

Claims (2)

[Claims] 1. A processor comprising: a memory storing initial declaration information; a serial interface; and a processor that transmits the initial declaration information stored in the memory via the serial interface when a terminal is activated. I
While the C card and the IC card are set,
A transmission interface that performs data transmission between the serial interface and the IC card at one of a plurality of transmission speeds, detects that the IC card is set, and transmits a terminal to the IC card in a prescribed sequence. An IC card system comprising: a terminal device that performs activation and is equipped with a transmission speed control means that controls the transmission speed of the transmission interface based on the initial declaration information sent from the IC card. 2. The terminal device includes a data transmission modem that performs data transmission with the host device, and data transmission speed control means that controls the transmission speed of the data transmission modem based on the initial declaration information. Characteristic claim (1)
The IC card system described.