CN2160943Y

CN2160943Y - Multifunctional acoustooptic credit card

Info

Publication number: CN2160943Y
Application number: CN 93224849
Authority: CN
Inventors: 李幼夫
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-09-23
Filing date: 1993-09-23
Publication date: 1994-04-06
Anticipated expiration: 2003-09-23

Abstract

The utility model relates to a multifunctional acoustic-optic credit card, which is an integrated circuit acoustic-optic credit card specially using a microprocessor chip as a core. The utility model has all functions of a common credit card, a magnetic card and the existing IC card, and can do remote authorization in different areas through wired transmitting media or wireless transmitting media. The utility model can realize completely offline use without special equipment, such as a read-write card, can realize independent credit service between multiple functions and multiple items. The card makes up the shortages of the existing identity certifications, credit credentials and valuable carriers in many aspects and widens the application area of the field of authorization and credit transaction.

Description

Multifunctional acoustooptic credit card

The utility model is the integrated circuit acousto-optic credit card that a kind of chip with special-purpose chip microprocessor is a core.

The application of well-known credit card provides a great convenience to society, but present employed common credit card, magnetic recording card, integrated circuit credit card (IC-card) all exist separately defective and deficiency: common credit card and magnetic card generally can only use at an agent authorized, therefore the hair fastener type is various, makes troubles to the user; Their use is relying on the foundation of POS net again, otherwise out of control will the becoming unavoidably of overdrawing; The appearance of existing IC-card has solved the problem of one card for multiple uses, but the same with other credit card, and IC-card also must rely on special-purpose card-reading apparatus when off-grid uses; Losing during existing credit card uses falsely use, be forged and duplicate usurp also be since self insufficiency of function and confidentiality strong due to; Along with the development of service sector and telecommunications industry, it is more and more to propose certain credit services request by the user at a distance by phone or other conventional communication modes at present, and prior art can't be competent at this type of strange land service request of not meeting.

The utility model be design in order to overcome deficiency of the prior art a kind of with acousto-optic as the message exchange media, can directly carry out the integrated circuit credit card of dialogue function between people card.

Ultimate principle of the present utility model and formation are around a special microprocessor chip, CPU (central processing unit) (1) and program storage unit (2) are wherein arranged, data-storing unit (3).The holder can pass through operation keyboard (6) input unlocking cipher, selects service entry, storage user profile, cut down use the amount of money, manually control sends information code or the like, direct read operation information on LCD (5) simultaneously.Be sent out sign indicating number was at first carried out key by the dedicated program segment in the memory under program (2) before sending digital encryption and algorithm for encryption, because clock unit (7) can provide calendar clock accurately to central processing unit (1), dedicated program segment is encrypted the coding time of carrying out in conjunction with real-time clock, make the coding that is produced become the function of time, the information code behind this process multi-enciphering can be taken precautions against surreptitiously record playback effectively and behavior is usurped in forgery.The transmission of information code then can be via two different passages, a kind of is outwards to send the optical receiver of read-write equipment by LED infrared light-emitting device (14) with the invisible light form through current driver (13), this method good confidentiality, and speed is fast, noncontact is transmitted, anti-electromagnetic interference (EMI).Another kind is to encode through audio demodulator (8), and code conversion is become audio electrical signal, sends to the audio receiver of read-write equipment or the receiver of communication system, for example phone transmitter through power amplification (9) from playback loudspeaker (10) again.This is stuck in when receiving the project verification of hair fastener unit, enciphered message, then the special-purpose card writer by hair fastener unit sends to the photosensitive device (12) of acousto-optic card by light signal, and converts electric signal to and deliver central processing unit (1) carry out decoding processing behind amplification shaping device (11).Because the low-power consumption requirement of credit card, its feed circuit provide two-way output, and wherein one the tunnel is the conventional power supply of battery, and another road then is controlled by CPU (central processing unit) (1), uses to realize reducing power consumption.See accompanying drawing 1.

The utility model compared with prior art has following characteristics:

1, this card uses acoustical signal output of audiorange, by common wired or wireless communication apparatus as the long-distance transmissions media, thereby easily realized the long-distance authorizing of not meeting.

2, this Cali carries out read-write operation with the light coded signal, realized the noncontact transmission, at a high speed, anti-electromagnetic interference (EMI), good confidentiality, read-write equipment characteristic of simple.

3, miniature keyboard and liquid crystal device can carry out the people easily and block dialogue, and the complete off line when realizing not needing read-write equipment is used.

4, cipher mode is gone back operate time and is encrypted except that having used conventional numeral and algorithm for encryption, has effectively taken precautions against surreptitiously record repeating transmission and forgery and has usurped behavior.

5, the coded lock function makes user oneself set and to change password, has taken precautions against the behavior of falsely using of losing.

6, high capacity information storage, multiple level of confidentiality measure and direct people block dialogue, realized multi-functional, multinomial purpose independent credit service, possess daily subsidiary functions such as telephone number storage inquiry, automatic dual-tone dialing, repeating transmission, timer are arranged simultaneously, really accomplished one card for multiple uses.

The drawing of the utility model accompanying drawing is described as follows:

Fig. 1 is a circuit theory synoptic diagram of the present utility model.(1) is CPU (central processing unit) among the figure, (2) be the watchdog routine memory, (3) be data memory, (4) be LCD driver, (5) be LCD, (6) be the keyboard input circuit, (7) be the real-time clock unit, (8) are audio demodulators, and (9) are audio-frequency power amplifiers, (10) be playback loudspeaker, (11) be that photoelectricity receives amplification shaping device, (12) are photoreceptors, and (13) are current drivers, (14) be infrared light-emitting device, (15) are controlled power supply units.

Fig. 2 is embodiment circuit theory diagrams of the present utility model.Make additional remarks below in conjunction with present embodiment.

Integrated chip in the present embodiment all adopts the manufacturing of the little power consumption technology of low-voltage; Wherein CPU, E ²PROM, PROM are integrated in the chip, and its storage content can't illegally be read; Power supply is provided by the 3V battery; Transistor T is the gauge tap of power supply V ', has only when related circuit need be powered, and CPU just controls T conducting power supply; R1, R2 are divider resistance among the figure, are adjusted to appropriate value to guarantee the requirement of sound output.

Claims

1, a kind of multifunctional sound credit card is characterized in that, by CPU (central processing unit) (1), the credit card that memory unit (2), (3) constitute for control storage core, the holder can finish password setting by keyboard circuit (6), unblanks, the operation of credit services option, information storage and artificial signaling, and can from display (5), directly read corresponding service log and operation information, realize the dialogue between people's card.

2, it is characterized in that according to the credit card in the claim 1, the serial information that central processing unit (1) is produced by modulator (8) carries out multitone frequency and single audio frequency pulsed modulation, is sent with audio coding mode by loudspeaker (10) behind power amplifier (9).

3, it is characterized in that according to the credit card in the claim 1, when external equipment sticks into row closely during read operation to this, the serial data that is produced by central processing unit (1) is flowed through after (13) carry out current drives, sends in the pulse code mode through infrared light-emitting device (14).

It is characterized in that according to the credit card in the claim 1 that 4, when external equipment sticked into capable write operation with light signal to this, the light coded signal was received by photosensitive device (12), sent central processing unit (1) to carry out decoding processing after (11) amplify shaping.

5, it is characterized in that according to the credit card in the claim 1, clock unit (7) directly links to each other by universal serial bus with central processing unit (1), provide the calendar clock of standard to show by display (5), and by the dedicated program segment in (2) it was encrypted the waiting message that carried out digital encryption and the algorithm for encryption time of carrying out, send to outside receiving equipment by sound or light mode subsequently.Also carry out the time deciphering for the light instruction and data information that send the outside with same procedure.

It is characterized in that according to claim 1,2,3,4,5 acousto-optic credit card that 6, the feed circuit of this card provide two-way output, wherein one the tunnel is controlled by central processing unit (1), realizes that reducing power consumption uses.