CN2262721Y - Universal primary product for IC card reading writing treating equipment - Google Patents

Abstract

The utility model discloses an IC card application apparatus which is controlled and managed by a computer. The utility model is composed of a control circuit for a single chip computer, an external user program memory and an external data memory, which are connected through an address bus and a data bus for the single chip computer. The single chip computer is connected with an interface of an IC card socket; the inside of the single chip computer comprises an inner program memory which is solidified and stored with an IC card read-write operating program in the form of a sublibrary, and the external memory is used for storing user program and data for controlling an IC card read-write operation and data processing. A specific IC card application apparatus can be formed by completing a user programming by a user only. The utility model also has the advantages of powerful commonality, short development cycle for users, low cost, convenience and flexibility.

Description

The universal primary product of IC-card read-write treatment facility

The utility model relates to the IC-card application apparatus of a kind of computer control and management.

IC-card is that a kind of integrated circuit (IC) chip that will have memory function is flush-mounted in formed integrated circuit card in the plastic substrate, claims smart card again, and its application is very extensive.The primary products that the IC-card that provides is in the market used (claim the IC-card read write line again, read/write head) for its program is maintained secrecy, adopt independently Single Chip Microcomputer (SCM) system, can only operation such as read and write to IC-card, can not provide the various interface circuit to the user, pass through serial port or parallel port exchange message between user and this primary products, the user can only carry out indirect operation to IC-card, limited the dirigibility of user program like this, and the reliability of reduction system, real-time, and the user adopts oneself independently single-chip microcomputer, need redesign hardware, design control circuit and various interface, do circuit printing plate, so just prolonged user's construction cycle, improved cost of products.

The purpose of this utility model is to provide a kind of general IC-card to read and write the primary products of treatment facility, the various interface circuit can be provided, make the user need not the otherwise designed circuit, to shorten product development cycle, reduce cost of products, and strengthening the convenience and the dirigibility of user program greatly, the user finishes a concrete IC-card application apparatus of user program design then formation.

The technical solution of the utility model is as follows: it is by single chip machine controlling circuit, the external user program storage, external data memory is formed, wherein the single-chip microcomputer of single chip machine controlling circuit is by address bus and data bus and external user program storage, external data memory links to each other, single-chip microcomputer connects IC-card deck interface, single-chip microcomputer inside comprises with the subroutine library form solidifies the internal program memory that stores IC-card read-write operation program, the external user program storage, store the user in the external data memory respectively for controlling IC-card read-write operation and data processing required user program and data and being subjected to Single-chip Controlling, the structure that is the shared CPU of IC-card running program and user program is the control core, and IC-card deck interface is used to the IC-card of pegging graft.Single chip machine controlling circuit comprises single-chip microcomputer, crystal oscillating circuit, automatic reset circuit and code translator, single-chip microcomputer wherein connects calendar clock chip, LCD interface and printer interface respectively by data bus, single-chip microcomputer connects general purpose I/O interface chip, can expand parts such as connecting keyboard, light-emitting diode display by this chip; Single-chip microcomputer connects serial communication interface by the interface level conversion chip, realizes the on line data communication, and single-chip microcomputer also can connect magnetic card reader or other I/O interfaces.

The scm application system that the utility model is is core with a single-chip microcomputer, it merges IC-card read-write monolithic processor control device of the prior art, user management monolithic processor control device, form an independence, complete IC-card read-write treating apparatus, also applicable magnetic card or other medium.The utility model is in the IC-card application, and general manufacturer lacks the technical capability of exploitation IC-card operation or is unworthy oneself developing the problem of all parts, to shorten the construction cycle.Deposit IC-card read-write operation base program with the subroutine form in the single-chip microcomputer internal program memory, also comprise universal standard subroutines such as calendar clock chip control subprogram, LCD Controller subroutine, serial communication subroutine.Because the single-chip microcomputer interior reservoir has the subroutine library, is very easy to user program, and the user is operated IC-card, clock under to uncomprehending situations such as IC-card, calendar clock chips.

Below in conjunction with accompanying drawing in detail the utility model is described in detail.

Fig. 1 is a theory diagram of the present utility model;

Fig. 2 is a circuit diagram of the present utility model.

As shown in Figure 1, the utility model makes user program convenient and flexible, so that develop the IC-card application product in the shortest time, gives the user on the hardware and expands leeway fully, has considered the various possible demands of user, and the multiple interfaces circuit is provided.The user only needs the designing user supervisory routine, and its program and desired data are deposited in respectively in external user program storage, the external data memory, then forms a concrete IC-card application apparatus, and use can put into operation.Whole device is in operational process, elder generation's run user program, user program is as master routine, the laggard access customer supervisory routine of custom system initialization, when carrying out basic operations such as IC-card read-write, call subroutine library in the single-chip microcomputer internal program memory by user program, then return, finish by user program.

As shown in Figure 2, single-chip microcomputer can adopt 8751CPU chip U1, code translator adopts 74LS138 cake core U7, being used for Transistor-Transistor Logic level links to each other with RKD, the TKD pin of U1 by 16 pin 15, to the interface level conversion chip U9 of RS232 interface level conversion, 1,2,3 pin of U7 link to each other with 25,26,27 pin of U1, general purpose I/O interface chip U5 adopts 8155 chips, and 15 pin of U7 link to each other with 8 pin of U5; The external user program storage adopts 27128 chip U3, and external data memory adopts 62256 chip U4, and 22 pin of U3 link to each other with 29 pin of U1 again, and 22,27 pin of U4 link to each other with 17,16 pin of U1 again, and calendar clock chip U6 links to each other with data bus D0～D7; A 74LS373 chip U2 links to each other with single-chip microcomputer with address bus by data bus, and 4060 chip U10 and peripheral components thereof constitute automatic reset circuit, and the deadlock phenomenon appears in anti-locking apparatus; Triode P2 and P3, battery B1, diode D1, capacitor C 11, resistance R 11 and R12 constitute the power down protection circuit, and this circuit is connected between power supply and the ground, make this device when not having extraneous power supply, calendar clock energy operate as normal, and external RAM can keep data; 14 pin of U6 link to each other with 11 pin of 30 pin of U1, U5; 1～8 pin of U1 connects 2～9 pin of IC-card deck interface J1, LCD interface J2 links to each other with U1 by data bus with printer interface J3, serial communication interface J4 connects RKD, the TKD pin of U9, and 1,2 pin that magnetic card or other are used I/O interface J5 link to each other with 13,14 pin of U1.

The utility model is read and write the P1 mouth of U1 by the IC-card function subprogram of single-chip microcomputer inside in operational process, thereby finishes the various operations to IC-card.User program carries out communication by the serial port and the external world, and the utility model can directly be linked to each other with PC.Single-chip microcomputer U1 selects J2 or J3 or U6 by code translator U7 decoding, by data bus and read-write control signal, finishes to the control of liquid crystal display, printer and to the read-write of calendar clock chip.U1 deciphers by U7, selects chip U5, finishes control to U5 by data bus, control bus, thereby finishes the control to peripheral hardware by its A, B, C mouth, and A, B, C mouth can connect parts such as keyboard, light-emitting diode display.

In sum, the utility model is as the primary products of IC-card read-write treatment facility, with the shared CPU of designing program of user, and program is stored in different zones separately, get in touch by the subroutine call mode between the two, like this, the user just can directly operate IC-card, has improved the reliability and the real-time of system; The utility model also can be provided with other subroutine in single-chip microcomputer, do not need when the user uses to write again, only need directly call to get final product, and has strengthened the convenience and the dirigibility of user program like this; The utility model provides the various interface circuit, makes the user need not redesign circuit, shortens the construction cycle, reduces cost of development; The utlity model has extremely strong versatility, be applicable to that application apparatus is handled in the various read-writes of IC-card.

Claims (3)

1, a kind of universal primary product of IC-card read-write treatment facility, it is characterized in that it is by single chip machine controlling circuit, the external user program storage, external data memory is formed, wherein the single-chip microcomputer of single chip machine controlling circuit is by address bus and data bus and external user program storage, external data memory links to each other, single-chip microcomputer connects IC-card deck interface, single-chip microcomputer inside comprises with the subroutine library form solidifies the internal program memory that stores IC-card read-write operation program, external user program storage, store the user in the external data memory respectively for controlling IC-card read-write operation and data processing required user program and data and being subjected to Single-chip Controlling.

2, the universal primary product of IC-card read-write treatment facility according to claim 1, it is characterized in that single chip machine controlling circuit comprises single-chip microcomputer, crystal oscillating circuit, automatic reset circuit and code translator, single-chip microcomputer wherein connects calendar clock chip, LCD interface and printer interface respectively by data bus, single-chip microcomputer connects general purpose I/O interface chip, can expand parts such as connecting keyboard, light-emitting diode display by this chip; Single-chip microcomputer connects serial communication interface by the interface level conversion chip, realizes the on line data communication, and single-chip microcomputer also can connect magnetic card reader or other I/O interfaces.

3, the universal primary product of IC-card read-write treatment facility according to claim 1 and 2 is characterized in that:

(1), single-chip microcomputer can adopt 8751CPU chip E1, code translator adopts 74LS138 cake core U7, being used for Transistor-Transistor Logic level links to each other with RKD, the TKD pin of U1 by 16 pin 15, to the interface level conversion chip U9 of RS232 interface level conversion, 1,2,3 pin of U7 link to each other with 25,26,27 pin of U1, general purpose I/O interface chip U5 adopts 8155 chips, and 15 pin of U7 link to each other with 8 pin of U5;

(2), the external user program storage adopts 27128 chip U3, external data memory adopts 62256 chip U4,22 pin of U3 link to each other with 29 pin of U1 again, and 22,27 pin of U4 link to each other with 17,16 pin of U1 again, and calendar clock chip U6 links to each other with data bus D0～D7;

(3), a 74LS373 chip U2 links to each other 4060 chip U10 and peripheral components formation automatic reset circuit thereof with single-chip microcomputer U1 with address bus by data bus; Triode P2 and P3, battery B1, diode D1, capacitor C 11, resistance R 11 and R12 constitute the power down protection circuit, and 14 pin of U6 link to each other with 11 pin of 30 pin of U1, U5;

(4), 1～8 pin of U1 connects 2～9 pin of IC-card deck interface J1, LCD interface J2 links to each other with U1 by data bus with printer interface J3, serial communication interface J4 connects RXD, the TXD pin of U9, and 1,2 pin that magnetic card or other are used I/O interface J5 link to each other with 13,14 pin of U1.