CN2389392Y

CN2389392Y - Identification instrument for evident code and hiden code used in anti-counterfeit

Info

Publication number: CN2389392Y
Application number: CN 99229313
Authority: CN
Inventors: 汪银海
Original assignee: ZHONGDING ELECTRONIC CO Ltd HEFEI
Current assignee: ZHONGDING ELECTRONIC CO Ltd HEFEI
Priority date: 1999-08-27
Filing date: 1999-08-27
Publication date: 2000-07-26
Anticipated expiration: 2009-08-27

Abstract

The utility model relates to a special identifying instrument for the counterfeiting prevention of an evident code and a hidden code. The utility model is characterized in that the utility model is composed of a monolithic computer circuit DS with functions of sleep and wake, an inner sleep sustaining power supply E2, an outer working power supply E1, an evident code input keyboard KB or a bar code scanning device TS, a hidden code displaying liquid crystal module YJ. The utility model is provided with an IC card seat opening KZ which is used for receiving the data of the evident and the hidden code in a CPU data card and an unified secret key group. When a machine shell which is arranged in the utility model is disassembled, a single chip computer is triggered to start a switch FK which clears ciphers and prevents the data program from disassembling. The utility model is applied to the anti-counterfeiting technique of the evident code and the hidden code, and a consumer can directly identify realness and falseness on the utility model to enhance the operability of the anti-counterfeiting technique of the evident code and the hidden code with strong anti-counterfeiting strength.

Description

The false proof special-purpose identifier of light and shade sign indicating number

The utility model relates to false proof utensil.More particularly, be a kind of being applied in the light and shade sign indicating number anti-counterfeiting technology, set plain code is discerned, to judge the false proof special-purpose identifier of light and shade sign indicating number of the true and false.

Light and shade sign indicating number anti-counterfeiting technology is used widely on commodity market, and it is the telephone code anti-counterfeiting technology that its typical case uses.Concrete grammar is that one group of plain code and private mark are set on each part Commercial goods labels, and these are bright, private mark deposit data is in each giant brain database, after the consumer buys commodity, with the light and shade sign indicating number on telephone set to this data base querying, to distinguish true from false.Though this method for anti-counterfeit cost is low, it is simple to make, in the practical application, because problems such as costs of use, most consumers does not go to make a phone call to discern.The problem of thereupon bringing is: the first, and the consumer does not inquire about, and the database sign indicating number that just can not disappear accumulates over a long period, and database certainly will be increasing, causes confusion at last.The second, because the consumer do not inquire about, data are trapped in the database, thereby give the another machine of taking advantage of of making of fake producer, not only can make a collection of counterfeit that true sign indicating number is arranged equally, also can true plain code from the phone free call on sb. else's expense through illegal means cause and obscure with the sign indicating number that disappears.The 3rd, the mechanism that cracks down on counterfeit goods is not easy to crack down on counterfeit goods by Help by Phone.

The purpose of this utility model is to avoid above-mentioned weak point of the prior art, a kind of computer data that replaces is provided, the false proof special-purpose identifier of light and shade sign indicating number of identification directly is provided for the consumer,, strengthens anti-counterfeiting power to improve the operability of light and shade sign indicating number anti-counterfeiting technology.

The purpose of this utility model is achieved through the following technical solutions.

Design feature of the present utility model is:

Keep by having the sleep and the single chip circuit DS of arousal function, inner sleep that power supply E2, operate outside power supply E1, plain code input keyboard KB or bar code sweep device TS, private mark demonstration Liquid Crystal Module YJ forms;

The IC-card seat mouth KZ of setting in order to receive the light and shade code data in the cpu data card and to receive unified set of cipher key.Described IC-card seat mouth KZ is made of two line sockets, and two end lines insert RA1 port and the ground wire of singlechip chip IC1 respectively.

When being arranged on casing and being disassembled, trigger single-chip microcomputer and start the breaking-proof switch FK that removes password and data program.

The utility model is by unified set of cipher key in light and shade code data in the IC-card seat mouth reception cpu data card and the Antiforge system, adopt this unified set of cipher key to carry out the crypto-operation transmission, a plurality of random numbers in addition in the transmittance process make digital signal present polytrope and dynamic.After clear data being imported Single Chip Microcomputer (SCM) system by keyboard or bar code, Single Chip Microcomputer (SCM) system at first has or not the existence of this plain code in the data query internal memory, and then find out corresponding preceding 10 private mark random number ciphertexts, calculate back 6 private marks according to 16 plain codes with distortion DES algorithm, and on Liquid Crystal Module, 16 private marks are shown, thereby discern.Eliminate the corresponding ciphertext random code simultaneously.Compared with the prior art, be applied in the light and shade sign indicating number anti-counterfeiting technology with the utility model, the consumer can directly carry out truth identification thereon, and the operability, the anti-counterfeiting power that have greatly improved the light and shade anti-counterfeiting technology are strong.

Fig. 1 is the utility model circuit block diagram.

Fig. 2 is the utility model circuit theory diagrams.

By the following examples, in conjunction with the accompanying drawings the utility model is further described.

Embodiment:

Referring to accompanying

drawing

1,2, present embodiment keeps by having the sleep and the single chip circuit DS of arousal function, inner sleep that power supply E2, operate outside power supply E1, plain code input keyboard KB or bar code sweep device TS, private mark demonstration Liquid Crystal Module YJ forms;

As shown in Figure 2, in the present embodiment, adopt 8 single-chip microcomputer IC1 of PIC16C558IC type, data-carrier store IC3 adopts 24LC256.Deck mouth KZ is made of two line sockets, and two end lines insert RA1 port and the ground wire of singlechip chip IC1 respectively.Breaking-proof switch FK is by a plurality of microswitch FK1---the FK4 formation of connecting, an end ground connection, the RB0 port of other end order sheet machine chip IC1.Breaking-proof switch is distributed in instrument and closes lid up and down in conjunction with part.Under the normal condition, microswitch is connected, and port RB0 is a low level, in case illegally dismantle, microswitch promptly has open circuit, and single-chip microcomputer then starts relative program, removes the set of cipher key and the total data of preserving in it, and identifier lost efficacy, and reaches the purpose of tamper.Liquid Crystal Module YJ selects 16 sectional type liquid-crystalline glasses sheets for use, and its display driver adopts the HT1621 type, and display driver is that five lines are connected with single chip circuit, promptly select lines CS, data line DA, write line WR, power lead and ground wire.By comparer IC2; A constitutes inside and outside power supply comparator circuit, and its comparison output signal is connected to the RA0 port of singlechip chip IC1.As external power source E1 during greater than internal electric source E2, the RA0 mouth of single-chip microcomputer IC1 is a low level, and be duty this moment; As external power source E1 during less than internal electric source E2, the RA0 mouth is a high level, when Single Chip Microcomputer (SCM) program detects this high level, enters the sleep power down mode immediately, is difficult for losing with the code data of keeping single-chip data inside.Bar code input unit TS offers the RB1 port of IC1 with the form of serial digital signal.As shown, constitute keyboard KB scan matrix by RA3 end line, the RB1-RB7 end line of IC1.Keyboard comprises ten numerals and six function keys, and wherein, function key comprises shutdown, self check, password, identification, reception and bar code.In addition, also has reset key RS.Wherein, " shutdown " key makes Single Chip Microcomputer (SCM) system enter artificial sleep power down mode." self check " is used to differentiate the true and false of identifier self.Press this key, whether single-chip microcomputer is not searched this clear data in the internal memory, and only according to the clear data computing distortion DES that is keyed in, resulting six private mark numbers are in liquid crystal display, to show the true and false." password " key is in single-chip microcomputer IC1 and receives the password state.At this moment, the cipher control center passes to single-chip microcomputer IC1 with binary serial data signal by IC-card seat mouth KZ, IC1 deposits the data of receiving in card reading status, and with after the random number MS do distortion DES computing, by the oral instructions of KZ deck to the cpu data card, after the cpu data card solves this random data, with its as new password and in addition conversion pass to IC1 again and check, simultaneously, IC1 passes to the information of a correctness of cpu data card again, if correct information, the cpu data card will be a key with this MS, IC1 is passed in its light and shade code data encryption, and after the IC1 decoding, the light and shade code data promptly deposits in the memory IC 3 shown in the figure.After " identification " was used in the clear data key entry, the instruction relative program was searched and is had or not this plain code to exist in the memory IC 3, does not then send error message if do not exist; Then find out corresponding private mark in advance to show if exist, eliminate the corresponding ciphertext random code simultaneously.In the present embodiment, setting light and shade yardage bit length all is 16, and preceding 10 of its private mark is and the plain code random number corresponding that back 6 then obtain according to distortion DES algorithm.The private mark data that single-chip microcomputer IC1 will so handle show on Liquid Crystal Module, and do sound prompting.

Claims

1, the false proof special-purpose identifier of light and shade sign indicating number is characterized in that:

2, the false proof special-purpose identifier of light and shade sign indicating number according to claim 1 is characterized in that described breaking-proof switch FK is by a plurality of microswitch FK1---the FK4 formation of connecting, an end ground connection, the RB0 port of other end order sheet machine chip IC1.

3, the false proof special-purpose identifier of light and shade sign indicating number according to claim 1, it is characterized in that described LCD MODULE YJ selects 16 sectional type liquid-crystalline glasses sheets for use, its display driver adopts the HT1621 type, described driver is that five lines are connected with single chip circuit, promptly select lines CS, data line DA, write line WR, power lead and ground wire.

4, the false proof special-purpose identifier of light and shade sign indicating number according to claim 1 is characterized in that inside and outside the power supply comparator circuit that is made of comparer IC2 is set, and its comparison output signal is connected to the RA0 port of singlechip chip IC1.