CN1168041C - Portable fingerprint confirming IC card identifying and reading device - Google Patents
Portable fingerprint confirming IC card identifying and reading device Download PDFInfo
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- CN1168041C CN1168041C CNB00136121XA CN00136121A CN1168041C CN 1168041 C CN1168041 C CN 1168041C CN B00136121X A CNB00136121X A CN B00136121XA CN 00136121 A CN00136121 A CN 00136121A CN 1168041 C CN1168041 C CN 1168041C
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Abstract
The present invention relates to a portable identifying and reading device for a fingerprint confirming IC card, which comprises a offline fingerprint confirming reader-writer and an IC card reader-writer. The characteristics of the fingerprint of a living body is compared with the fingerprint characteristics stored in a chip of an IC card to verify a card holder's legal identity through the equipment and the system. Simultaneously, individual information stored in the chip of the IC card is taken out, and coding information is translated into character information. Finally, the whole individual information is displayed. The present invention can be coincident with various card systems, be generally used for IC cards with various storage modes and can treat the information of fingerprint characteristics, digital codes, characters, cipher keys, etc. and realize the safe control of IC cards.
Description
Technical field
The invention provides a kind of equipment and software systems, be particularly related to a kind of extraction that is used for the living body finger print information in the IC-card that realizes with higher accuracy, and be implemented in the process of IC-card read-write and carry out finger print identifying, solved the portable fingerprint confirming IC card identifying and reading device of the problem of the application of present fingerprint technique and respective carrier.
Background technology
At present, because the application of infotech is constantly expanded, the Information Security problem shows particularly outstandingly.Birth and development along with public key algorithm, various new identity authentication schemes emerge, for example Diffe-Hellma key exchange scheme, meeting key distribution approach, Schnorr scheme, kerberos authentication scheme based on user identity, layering certificate scheme, authorized signature system or the like.But these schemes can not stop the leakage at network terminal place privacy key, the intrusion that supervisor decoded in user's error or password, and the privacy key that obtains the user becomes easy thing.In case obtain privacy key, just be equivalent to obtain the rely whole foundations of its identity of proof of this user on the net, what cause that identity differentiates is unreliable.Therefore, the password that depends on user's inherently safe consciousness is keyed in or scheme such as privacy key all can not reach requirement, and a kind of appearance that does not rely on the new identity authentication technique of password becomes inevitable.Finger print identifying with the incomparable accuracy of itself and other authentication mode, uniqueness, security and easily collection property captured the chief position of authentication techniques.Meanwhile, in actual application, deposit and the management of finger print information becomes particularly important.Depend on central database and deposit finger print information and will be subjected to server capacity, network speed, the influence of many-sided factor such as server security also is faced with a series of problems such as compression, storage, contrast, transmission of fingerprint characteristic information simultaneously.The finger print information that adopts IC-card to come stores processor to cross, can carry also and can carry out Network Transmission at any time, having fully taken into account the object of identification---characteristics such as people's randomness, flowability become a new direction of following identity recognizing technology and IC-card technical development.
The present invention for solve key management and finger print information easily the property handled design.Comprise off line formula finger print identifying read write line and IC-card read write line.
Summary of the invention
The object of the present invention is to provide a kind of portable fingerprint confirming IC card identifying and reading device, with the accuracy that improves electronic information security identification in network environment, the integrated level that improves system, fingerprint characteristic information and data compression algorithm by this equipment acquisition, convert the binary code form to and be stored in the IC-card, realize the storage of fingerprint characteristic in IC-card; Simultaneously, under the situation that confirms holder's identity and authorize access IC-card internal memory with fingerprint characteristic information, the binary code that is stored in the IC-card is changed by algorithm for inversion, obtained the characteristic information of fingerprint, thereby realize checking living body finger print or IC-card legitimacy.By this off line formula read write line, can be implemented in the identification under various places and the various situation.Equipment can be common in the various industries IC-card to various storage classes and read and write, can adapt under the various key management mechanisms read-write security control to IC-card, in addition, can the built-in character library of equipment be configured and revise by software systems, applicable to the generation of any language and any rarely used word.
Purpose of the present invention is achieved through the following technical solutions:
Comprise finger print identifying read write line and IC-card read write line, its composition comprises singlechip CPU, data-carrier store RAM, LCD, keyboard, rf read-write device, fingerprint instrument, Switching Power Supply, and singlechip CPU is connected with PC by transmission interface, microcomputer serial mouth; Described rf read-write device is connected with the IC-card interface, is used for being connected with intellective IC card; Described rf read-write device is connected with singlechip CPU by the control bus interface; The data bus interface that described fingerprint instrument, LCD and keyboard pass through separately simultaneously is connected with singlechip CPU; Switching Power Supply provides inner direct supply to above-mentioned each parts, it is characterized in that: also comprise latch and character base module, latch is connected with singlechip CPU by data bus interface, and described data-carrier store RAM and library stores module all address bus interface, 8 bit data bus interfaces and the control bus interface by separately are connected with described latch.
The intellective IC card that the present invention is suitable for is the IC-card of encrypting storage organization that has that meets ISO7816 1/2 international standard.
Described intellective IC card interface is the IC-card connector that meets ISO7816 1/2 international standard.
Described character base module adopts the AT29C040A integrated circuit, and its capacity is the 512K byte, can store the Chinese character of about 16000 16 * 16 dot matrix, it adopts the parallel way of output, address bus is: A0-A18, its usage is similar to E2PROM, and supports the online programming under the 5V voltage.
Described latch adopts two 74LS373 integrated circuit 373-A and 373-B, wherein the effect of 373-A is the least-significant byte A7-A0 that latchs external address, the effect of 373-B is: because the address wire of library stores chip AT29C040A adds up to 19, so must use a slice latch extended address scope again, be used to latch A8-A15 herein.
Singlechip CPU is connected with address latch 74ls373, and 74LS373 is the negative edge latch, and wherein, sub-latch 373A is used to latch the least-significant byte address, input end D
7-D
0, be connected to the P of CPU
0On; Output terminal Q
7-Q
0The least-significant byte address that connects external memory storage, the ALE pin of clock termination CPU allows end OE ground connection; Sub-latch 373-B is used to latch the high address, because character base module is the 521K byte, and the A of its address wire
8-A
15The position, input end connects the P of CPU
0, output terminal Q
7-Q
0The high eight-bit address that connects external memory storage.
Described singlechip CPU is connected with character base module 29C040: data bus, the D of 29C040
7-D
0Be connected to the P of CPU
0Mouthful; Address bus A
0-A
7Be connected to the output terminal of 373-A; A
8-A
15Be connected to the output terminal Q of sub-latch 373-B
0-Q
7A16-A18 is connected to the P of CPU
2The P of mouth
2.0-P
2.2Control bus, CS is the fragment line, is connected to P
2.4OE enables for reading, and connects the RD end of CPU; WR for make write can, connect the WR end of CPU, therefore, the operation of word-base chip AT29C040 was divided into for two steps:
1. earlier address A
8-A
15Output to the Q of sub-latch 373-B
0-Q
7
2. operate with the MOVX instruction again.
Described data-carrier store RAM adopts 6264RAM, and may have a large amount of dynamic datas during owing to program run need deposit, and 89C52 inside has only 128 RAM, can not satisfy the demand, and therefore needing expansion RAM space, 6264 capacity is the 8K byte.
The data bus D of described data-carrier store RAM6264
7-D
0Be connected to the P of CPU
0Mouthful; Address bus is connected to the output terminal Q of 373-A
0-Q
7A
8-A
12Be connected to the output terminal Q of 373-B
0-Q
4Control bus, CS is a chip select line, is connected to P
2.3OE enables for reading, and connects the RD end of CPU; WR writes energy for making, and connects the WR end of CPU; Operation steps to data storage chip 6264 is similar with word-base chip AT29C040.
Described LCD adopts ACM12864I, and the display module of this kind LCD divides two parts, so need two heel piece route selections to control respectively, the R/W of CS1 and CS2 is that read/write operation is selected, and D/I is data/command selection, and E is an enable signal.
Described portable fingerprint confirming IC card identifying and reading device, its singlechip CPU is connected with LCD ACM12864I's: data bus, D
7-D
0Be connected to the P of CPU
0Mouthful; Control bus, CS1 are sheet segment signal 1, connect the P of CPU
2.7CS2 is a sheet segment signal 2, connects the P of CPU
2.6D/I is data/command selection, connects the P of CPU
2.0R/W is that read/write is selected, and connects the P2.1 of CPU; E is an Enable Pin, and RD connects the RD end of CPU, and WD connects the WR end of CPU.
Described radio-frequency card module for reading and writing adopts MCM200, and the data bus A3-A0 that its D7-D0 meets CPU is used to select the storer control line of inside modules to have: NCS---the sheet choosing; NWS---write; NRD---read; ALE---latch signal; RST---reset; IRQ---look-at-me.
Described CPU is connected with radio-frequency card module MCM200's: data bus, D
7-D
0Be connected to the P of CPU
0Mouthful; Address bus, A
0-A
3The Q that connects latch 373-A
0-Q
3Control bus, sheet select CS to connect the P of CPU
2.5Read the RD that RD connects CPU; Write the WR that WR connects CPU; The NRST that resets connects the P of CPU
1Mouthful; Interrupt the INT1 of NIRQ connection CPU; Latch signal ALE connects the ALE of CPU; Latch mode selects MODE to connect high level.
Described keyboard employing interrupt keyboard circuit 74LS245, when key was pressed, many inputs of 74LS21 and door chip generation look-at-me by keyboard transferred to M signal processor 74LS245, are come to read by 74LS245 the input value of keyboard again by CPU.
Described CPU is connected with the circuit of keyboard circuit 74LS245: A
0～A
7The P that connects CPU
0Mouthful; B
0～B
7Connect button direction control end DIR: ground connection; Make port E meet P
1Mouthful; Keyboard 74LS21 is 4 inputs and door chip, is used to produce keyboard interrupt signal, and wherein pin 1,2, and 4,5 connect button, and pin 6 connects the INTO of CPU.
The interface of described fingerprint instrument uses a slice 74LS244, is used for it and comprises two groups of bus buffers, can be used for RXD, the TXD signal of CPU switching, lead to fingerprint instrument or and the serial-port communication of computing machine; If communicate by letter,, therefore do not need to use the MAX232 chip because the fingerprint instrument that will design does not need the RS-232 level conversion with fingerprint instrument; And if compunication, then need to carry out level conversion with the MAX232 chip.
Being connected of described CPU and fingerprint instrument: CPU is by serial port and fingerprint instrument communication, because therefore CPU also will, need to use switching selector 74LS244 to switch by serial port and PC communication; Contain two groups of impact dampers among the switching selector 74LS244; Work as 1G=0, and during 2G=1, first group of impact damper opened, second group of impact damper cuts out, CPU can with the fingerprint instrument communication; Work as 1G=1, and during 2G=0, first group of impact damper cuts out, second group of impact damper opened, CPU can with the PC communication; Control line 1G and 2G are connected to the P of CPU
1Mouthful; The RTS end of fingerprint instrument is connected to the P of CPU
1Mouthful, CTS holds ground connection, at the output terminal connection RS--232 of second group of impact damper of 74LS244 level transferring chip MAX232.
Personal identification method provided by the present invention adopts the condenser type semiconductor transducer, based on multipole fingerprint form screening fingerprint fuzzy matching algorithm and alignment algorithm, solve quick, the accurately comparison of fingerprint, simultaneously, efficiently solve the comparison problem of distortion fingerprint, incomplete fingerprint.The IC-card safety control method of " one card one close " simultaneously, by the personal key generating algorithm IC-card key is carried out superencipher on the one hand, realize the read-write authorizing secure of IC-card,, realize the personal information security of IC-card on the other hand by the storage of fingerprint characteristic in IC-card.This method is controlled applicable to the read-write safety to any logical encrypt IC-card.
Application of the present invention is very extensive: for example, and security systems such as online transaction safety, financial security, information security; Also applicable to e-commerce security patterns such as B-B, B-C, C-C, C-B; Simultaneously, also can be applicable to the industry authentications of scope in the whole society such as population, traffic, administrative control of a state, finance, education, medical treatment, social security, tourism, commercial affairs, customs, for example electronic certificate checkings such as I.D., employee's card, student's identity card, medical certificate, passport, driving license.
According to feature of the present invention can supporting card sending system and management system implement, can control its kernal hardware and software systems by PC, the handled IC-card of the present invention generally is used for the management to the holder from card sending system.The built-in operating system of the present invention is independently with regard to its character.Different mechanisms can customize different literacies and compiling ability voluntarily.
Description of drawings
Preferred embodiment of the present invention is described with reference to the accompanying drawings as follows:
Fig. 1 is an outside drawing of the present invention;
Fig. 2 is a workflow diagram of the present invention;
Fig. 3 is a fingerprint collecting window synoptic diagram of the present invention;
Fig. 4 is the synoptic diagram of the present invention when Card Reader;
Fig. 5 is a frame structure synoptic diagram of the present invention;
Fig. 6 is latch 74LS373 connecting circuit figure of the present invention;
Fig. 7 is library stores chip AT29C040 connecting circuit figure of the present invention;
Fig. 8 is data-carrier store connecting circuit figure of the present invention;
Fig. 9 is liquid crystal connecting circuit figure of the present invention;
Figure 10 is radio frequency module for reading and writing MCM200 connecting circuit figure of the present invention;
Figure 11 is keyboard portion connecting circuit figure of the present invention;
Figure 12 is fingerprint instrument interface connecting circuit figure of the present invention;
Figure 13 is Switching Power Supply figure of the present invention;
Figure 14 is overall circuit figure of the present invention.
Embodiment
Referring to shown in Figure 1:
Shell of the present invention is a rectangular parallelepiped, and its volume urinates in carrying, and has the characteristic of off-line operation simultaneously.
What display screen of the present invention adopted is 4 * 8 LCDs, and it is backlight to have EL, also can work in the unconspicuous place of light.Visual 40.9 * the 24.9mm that is of a size of of liquid crystal display
2, single-point is of a size of 0.28 * 0.35mm
2, can show 128 * 64 dot matrix, * 8 Chinese characters of totally 4 row also show bitmap simultaneously such as information such as photo, fingerprints.Liquid crystal display adopts the EL of 900Hz backlight, and power consumption only is 56mA.From the consideration of battery saving mode, it is backlight that the present invention has adopted button to open automatically, and the pass is backlight automatically for 5s when unattended, stamps the card and opens processing modes such as backlight automatically, has saved the energy of battery greatly.
The present invention adopts the menu operation mode, finishes menu operation by function button, and keyboard adopts following arrangement mode:
1.ON/OFF power key
2. determine key
3. ESC Escape
4. upwards page turning
5. page turning downwards
The concrete implication of function key is by the content indication of LCDs.Upwards, the function of Page Down key is used in when browsing, all the elements can not be checked more information by it when one page shows.
Fingerprint collecting window of the present invention adopts solid capacitor formula scanner.Its outward appearance is a rectangle, and size is slightly less than first dactylus of finger.
The present invention adopts 2-3 joint No. 5 or No. 7 powered battery, or other kind battery of corresponding big small size.Parameter is that No. 5 powered battery of 2-3 joint were used 5 hours continuously, and stand-by operation is more than 20 hours.For guaranteeing that recognizer has enough energy, provide the function that shows remaining battery capacity at menu item, simultaneously if battery is lower than limit, recognizer is the prompting warning message automatically.
Referring to shown in Figure 2:
Adopt up-to-date user-centered interface design, the satisfied operation in the simplest mode finished necessary function.The printed words that demonstration on the display screen of start back " welcomes to use ", put into card-reading zone with IC-card this moment, then the tram of finger pressed in the sensitizing range, and whether internal system will be compared fingerprint of being gathered and the fingerprint that is stored in the card automatically is same fingerprint.If not then show error message, return stamp again, if same fingerprint then continues downward display message.
Referring to shown in Figure 3:
The finger print identifying of in to IC-card read-write process, realizing.When finger print identifying, adopt the contrast program that the finger print data of storage in the card is compared with the fingerprint characteristic that extracts from the fingerprint that collects.Adopt the condenser type semiconductor transducer.This sensor is made up of row's metal electrode, and each electrode measurement two row's conduction technology are influenced by finger pressure and the capacitance change that produces, and this image is made up of the variation in thickness of ripples different on the finger tip (skin) and line paddy.Picture quality will produce complete black image to presser sensor-too big pressure.The thickness of its outer outer dress can influence image too.
Its array of the sensitizing range of this fingerprint collecting is 300 * 300 pixels (spacings＜50um); Pixel is 90,000; Resolution is 8-bits (256 gray scale); Spacing is 50 μ m; Device level is 8bits; The range of size of sensitizing range is 15mm * 15mm; Module size is 25.4mm * 25.4mm; Its memory requirements is 87.9kb; Accuracy of system identification during finger print identifying (FAR) is 1/100,000; Refusing sincere (FRR) is 1/15; Its login time was less than 10 seconds.Solid capacitor formula scanner is adopted in this sensitizing range, and its shell is better than glass for 100 times
Mechanical damage and chemical corrosion, resolution (DPI) are 500 (dpi).
Referring to Fig. 4 and shown in Figure 5:
The present invention is general to the IC-card of various storage modes.Can be by after computing machine be carried out software setting, read the content in the card of any storage mode.The data of the characteristic feature of representing fingerprint in card, have been write down, in order to compare with the fingerprint characteristic that collects with binary-coded form.
In the key cryptosystem of card, take a card one close mechanism.Card reader includes the encryption system that a cover comprises the des encryption algorithm, and the real key of every card is calculated according to every globally unique card serial number of card by encryption system.Adopt the scheme of three kinds of key storages among the present invention, three cover keys of storage distribution in the recent period to guarantee and the consistance of system, provide interface simultaneously, and the renewal of internal key is given an order to download by computing machine and finished.
Adopt unique hardware encryption circuit on hardware circuit, the program among the EPROM must be deciphered again and could carry out by hardware encryption circuit, and therefore, the program after the encryption among the EPROM is fool proof, cracks modular program and hardly may.
The technical indicator that IC-card adopts is the MIFARE standard; Hardware encipher is ultra-large programming logic integrated circuit-ISP; Software cryptography is that DES, RAS, a card one are close.The read-write distance of IC-card is 25MM, and operating frequency is 13,56MHz.The ideographic word processing mode of IC-card is that the secondary character library wherein comprises uncommon character library.The storage capacity of card is 1024BYTE; Communication speed is 115200BPS; Communications protocol is the 8Bit data bit, 1Bit position of rest, RS232 full duplex serial communication; Technical interface is the DLL based on the WIN32/NT platform.
The present invention adopts 8M Flash high capacity memory structure system, finish others the function that can not finish, satisfy the prerequisite of system upgrade in the future simultaneously.The present invention can accomplish thoroughly to solve the rarely used word problem, its concentrate provide in all computing machine Windows95 operating systems the Chinese character that might represent, existing Chinese character is about 20000 in the computing machine, and 3000 spaces of making rarely used word are provided again.For some rarely used words, this machine adopts and is provided at the function of adding rarely used word among the EEPROM at any time, makes rarely used word no longer become the road blocking tiger of recognizer.The present invention simultaneously designs and adopts compression method can store 10,000 blacklists, each blacklist adopts the globally unique card serial number of 4 bytes to store, in stored algorithm, adopt tactic storage means, processing mode is by host computer and recognizer corporate management mode, carrying out the additions and deletions of blacklist in computing machine handles, and then sorted blacklist downloaded in the recognizer, in machine, adopt the method for half-and-half searching, for 10,000 blacklists, can find target 14 times at the most, seek rate is exceedingly fast.The present invention also can dynamically upgrade the correlative code dictionary by supervisory computer.The code information of newly-increased or change by software download in the computing machine in hand-held set.
Referring to shown in Figure 6:
Used two 74LS373 latchs in the design, 373-A and 373-B, the effect of 373-A is the least-significant byte A that latchs external address
7-A
0
The effect of 373-B is: because the address wire of library stores chip AT29C040A adds up to 19, so must use a slice latch extended address scope again.Be used to latch A herein
8-A
15
Referring to shown in Figure 7: library stores chip AT29C040A
The capacity of library stores chip AT29C040A is the 512K byte, can store the Chinese character of about 16000 16 * 16 dot matrix.It adopts the parallel way of output, and address bus is: A
0-A
18, its usage is similar to E
2PROM, and support online programming (under the 5V voltage).
Fig. 8 is data-carrier store 6264 RAM, and may have a large amount of dynamic datas during owing to program run need deposit, because 89C52 inside has only 128 RAM, can not satisfy the demand, and therefore needing expansion RAM space, 6264 capacity is the 8K byte.If system need show Chinese character information, should in system, add Chinese character base.Adopt the AT45D081 of atmel corp.Serial E 2PROM chip can be stored the Chinese character of about 37000 16 * 16 dot matrix.
Referring to shown in Figure 9:
Adopt ACM-1286I graphic dot matrix LCD.Can show 4 * 8 Chinese characters.Backlight electric power control: by the height storage battery of control Pin19, able to turn on or off backlight electric power is beneficial to system saving electricity.
The display module of this kind liquid crystal divides two parts, so need two heel piece route selections to control respectively.(CS1 and CS2)
R/W is that read/write operation is selected
D/I is data/command selection
E is an enable signal.
Referring to shown in Figure 10:
The D7-D0 of radio-frequency card module for reading and writing connects the data bus of CPU, and A3-A0 is used to select the storer of inside modules, and control line has:
NCS---sheet choosing
NWS---write
NRD---read
ALE---latch signal
RST---reset
IRQ---look-at-me
Referring to Figure 11 and shown in Figure 14:
Adopt the interrupt keyboard, when key is pressed, have 74LS21 (many inputs and door) to produce look-at-me, come to read key assignments by CPU again by 74LS245.
Referring to shown in Figure 12:
Use a slice 74LS244, be used for it and comprise two groups of bus buffers, can be used for RXD, the TXD signal of CPU switching, lead to fingerprint instrument or and the serial-port communication of computing machine.
If communicate by letter,, therefore do not need to use the MAX232 chip because the fingerprint instrument that will design does not need the conversion of RS-232 storage battery with fingerprint instrument.And if compunication, then need to use MAX232
Chip carries out the storage battery conversion.
Need the special-purpose fingerprint instrument of customization.Following interface standard is proposed
1. adopt serial line interface, baud rate 9600.No parity, a position of rest.
2. by singlechip CPU fingerprint instrument is said the word fingerprint instrument response and passback result.
3. order has three at least:
Scanning fingerprint: be used for fingerprint instrument run-down fingerprint, carry out data processing then, leave in the buffer zone of fingerprint instrument.
Read fingerprint: must after a last command execution, could use.Fingerprint instrument returns the finger print data to CPU then.
Fingerprint authentication: must after (scanning fingerprint) command execution, could use.By CPU to the fingerprint instrument line data of bristling with anger.Fingerprint instrument returns to CPU checking result then.
4. circuit interface:
Before fingerprint instrument was sent out data, RTS was because low level is sent application to fingerprint instrument to single-chip microcomputer at every turn, and behind the byte transmission result, RTS recovers high level.
Fingerprint authentication:
Command frame:
260 bytes
| Opening flag | Command word | Data | Verification | Sign as a result |
| OF | CC | DATA | 00 |
Data field and verification section require the same.
Response frame:
| Opening flag | Command word | The checking result | Sign as a result |
| OF 4 bytes | CC | Status | 00 |
Frame format:
Finger scan:
Command frame:
| Opening flag | Command word | End mark |
Totally 3 words
| OF | AA | 00 |
Response frame:
4 words
| Opening flag | Command word | Scanning result | End mark |
| OF | AA | Status | 00 |
CPU is after sending command frame, and serial port is in listening state always, the wait-for-response frame.Fingerprint reads:
Command frame:
3 bytes
| Opening flag | Command word | End mark |
| OF | BB | 00 |
Response frame:
| Opening flag | Command word | Data | Verification | End mark |
| OF | BB | ?DATA | 00 |
Referring to shown in Figure 13:
If adopt two joint 1.5V powered battery, need design DC-DC DC voltage booster circuit, transform to+5V by+3V.Can adopt the MAX849 chip, maximum output current can reach 1000mA, can satisfy system requirements.
Claims (17)
1, a kind of portable fingerprint confirming IC card identifying and reading device, comprise finger print identifying read write line and IC-card read write line, its composition comprises singlechip CPU, data-carrier store RAM, LCD, keyboard, rf read-write device, fingerprint instrument, Switching Power Supply, and wherein singlechip CPU is connected with PC by transmission interface, microcomputer serial mouth; Described rf read-write device is connected with the IC-card interface, is used for being connected with intellective IC card; Described rf read-write device is connected with singlechip CPU by the control bus interface; The data bus interface that described fingerprint instrument, LCD and keyboard pass through separately simultaneously is connected with singlechip CPU; Switching Power Supply provides inner direct supply to above-mentioned each parts, it is characterized in that: also comprise latch and character base module, described data-carrier store RAM all is connected with described latch with the library stores module, and having adopted two latchs that are connected with singlechip CPU, a slice latch wherein must be used to expand the address realm of library stores chip address line.
2, according to the described portable fingerprint confirming IC card identifying and reading device of claim 1, it is characterized in that: described intellective IC card is the IC-card of encrypting storage organization that has that meets ISO7816 1/2 international standard.
3, portable fingerprint confirming IC card identifying and reading device according to claim 1 is characterized in that: described IC-card interface is the IC-card connector that meets ISO7816 1/2 international standard.
4, portable fingerprint confirming IC card identifying and reading device according to claim 1, it is characterized in that: described character base module adopts the AT29C040A integrated circuit, its capacity is the 512K byte, it adopts the parallel way of output, address bus is: A0-A18, its usage is similar to E2PROM, and supports the online programming under the 5V voltage.
5, portable fingerprint confirming IC card identifying and reading device according to claim 1 is characterized in that: described two latchs are 74LS373 integrated circuit, and wherein a slice latch is used to latch the least-significant byte A7-A0 of external address, and another sheet is used to latch A8-A15.
6, portable fingerprint confirming IC card identifying and reading device according to claim 4 is characterized in that: singlechip CPU is connected with address latch 74ls373, and 74LS373 is the negative edge latch, and wherein, a slice latch is used to latch the least-significant byte address, input end D
7-D
0, be connected to the P of CPU
0On; Output terminal Q
7-Q
0The least-significant byte address that connects external memory storage, the ALE pin of clock termination CPU allows end OE ground connection; Another sheet latch is used to latch the high address, because character base module is the 521K byte, and the A of its address wire
8-A
15The position, input end connects the P of CPU
0, output terminal Q
7-Q
0The high eight-bit address that connects external memory storage.
7, portable fingerprint confirming IC card identifying and reading device according to claim 4 is characterized in that: described singlechip CPU is connected with character base module AT29C040A: data bus, the D of AT29C040A
7-D
0Be connected to the P of CPU
0Mouthful; Address bus A
0-A
7Be connected to the output terminal of a slice latch; A
8-A
15Be connected to the output terminal Q of another sheet latch
0-Q
7A16-A18 is connected to the P of CPU
2The P of mouth
2.0-P
2.2Control bus, CS is the fragment line, is connected to P
2.4OE enables for reading, and connects the RD end of CPU; WR for make write can, connect the WR end of CPU, therefore, the operation of word-base chip AT29C040A was divided into for two steps:
1. earlier address A
8-A
15Output to the Q of another sheet latch
0-Q
7
2. operate with the MOVX instruction again.
8, portable fingerprint confirming IC card identifying and reading device according to claim 1, it is characterized in that: described data-carrier store RAM adopts 6264RAM, because may have a large amount of dynamic datas during program run need deposit, and 89C52 inside has only 128 RAM, can not satisfy the demand, therefore needing expansion RAM space, 6264 capacity is the 8K byte.
9, portable fingerprint confirming IC card identifying and reading device according to claim 8 is characterized in that: the data bus D of described data-carrier store RAM6264
7-D
0Be connected to the P of CPU
0Mouthful; Address bus is connected to the output terminal Q of a slice latch
0-Q
7A
8-A
12Be connected to the output terminal Q of another sheet latch
0-Q
4Control bus, CS is a chip select line, is connected to P
2.3OE enables for reading, and connects the RD end of CPU; WR writes energy for making, and connects the WR end of CPU; Operation steps to data storage chip 6264 is:
1. earlier address A
8-A
15Output to the Q of another sheet latch
0-Q
7
2. operate with the MOVX instruction again.
10, portable fingerprint confirming IC card identifying and reading device according to claim 1, it is characterized in that: described LCD adopts ACM12864I, the display module of this kind LCD divides two parts, so needing two heel piece route selections controls respectively, the R/W of CS1 and CS2 is that read/write operation is selected, D/I is data/command selection, and E is an enable signal.
11, portable fingerprint confirming IC card identifying and reading device according to claim 10 is characterized in that: described singlechip CPU is connected with LCD ACM12864I's: data bus, D
7-D
0Be connected to the P of CPU
0Mouthful; Control bus, CS1 are sheet segment signal 1, connect the P of CPU
2.7CS2 is a sheet segment signal 2, connects the P of CPU
2.6D/I is data/command selection, connects the P of CPU
2.0R/W is that read/write is selected, and connects the P2.1 of CPU; E is an Enable Pin, and RD connects the RD end of CPU, and WD connects the WR end of CPU.
12, portable fingerprint confirming IC card identifying and reading device according to claim 1, it is characterized in that: described rf read-write device adopts MCM200, and the data bus A3-A0 that its D7-D0 meets CPU is used to select the storer control line of inside modules to have: NCS---the sheet choosing; NWS---write; NRD---read; ALE---latch signal; RST---reset; IRQ---look-at-me.
13, portable fingerprint confirming IC card identifying and reading device according to claim 12 is characterized in that: described CPU is connected with rf read-write device MCM200's: data bus, D
7-D
0Be connected to the P of CPU
0Mouthful; Address bus, A
0-A
3The Q that connects latch 373-A
0-Q
3Control bus, sheet select CS to connect the P of CPU
2.5Read the RD that RD connects CPU; Write the WR that WR connects CPU; The NRST that resets connects the P of CPU
1Mouthful; Interrupt the INT1 of NIRQ connection CPU; Latch signal ALE connects the ALE of CPU; Latch mode selects MODE to connect high level.
14, portable fingerprint confirming IC card identifying and reading device according to claim 1, it is characterized in that: described keyboard adopts interrupt keyboard circuit 74LS245, when key is pressed, the many inputs of 74LS21 by keyboard produce look-at-me with the door chip, transfer to M signal processor 74LS245, come to read the input value of keyboard again by CPU by 74LS245.
15, portable fingerprint confirming IC card identifying and reading device according to claim 14 is characterized in that: described CPU is connected with the circuit of keyboard circuit 74LS245: A
0～A
7The P that connects CPU
0Mouthful; B
0～B
7Connect button direction control end DIR: ground connection; Make port E meet P
1Mouthful; Keyboard 74LS21 is 4 inputs and door chip, is used to produce keyboard interrupt signal, and wherein pin 1,2, and 4,5 connect button, and pin 6 connects the INTO of CPU.
16, portable fingerprint confirming IC card identifying and reading device according to claim 1, it is characterized in that: the interface of described fingerprint instrument uses a slice 74LS244, be used for it and comprise two groups of bus buffers, the RXD, the TXD signal that can be used for CPU switching, lead to fingerprint instrument or and the serial-port communication of computing machine; If communicate by letter,, therefore do not need to use the MAX232 chip because the fingerprint instrument that will design does not need the RS-232 level conversion with fingerprint instrument; And if compunication, then need to carry out level conversion with the MAX232 chip.
17, portable fingerprint confirming IC card identifying and reading device according to claim 16, it is characterized in that: being connected of described CPU and fingerprint instrument: CPU is by serial port and fingerprint instrument communication, because CPU also will be by serial port and PC communication, therefore, need to use switching selector 74LS244 to switch; Contain two groups of impact dampers among the switching selector 74LS244; Work as 1G=0, and during 2G=1, first group of impact damper opened, second group of impact damper cuts out, CPU can with the fingerprint instrument communication; Work as 1G=1, and during 2G=0, first group of impact damper cuts out, second group of impact damper opened, CPU can with the PC communication; Control line 1G and 2G are connected to the P of CPU
1Mouthful; The RTS end of fingerprint instrument is connected to the P of CPU
1Mouthful, CTS holds ground connection, at the output terminal connection RS--232 of second group of impact damper of 74LS244 level transferring chip MAX232.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB00136121XA CN1168041C (en) | 2000-12-26 | 2000-12-26 | Portable fingerprint confirming IC card identifying and reading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB00136121XA CN1168041C (en) | 2000-12-26 | 2000-12-26 | Portable fingerprint confirming IC card identifying and reading device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1361496A CN1361496A (en) | 2002-07-31 |
| CN1168041C true CN1168041C (en) | 2004-09-22 |
Family
ID=4597077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB00136121XA Expired - Fee Related CN1168041C (en) | 2000-12-26 | 2000-12-26 | Portable fingerprint confirming IC card identifying and reading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1168041C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101339598B (en) * | 2008-08-15 | 2010-12-08 | 马福禄 | Identity chip portable read-write device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7590845B2 (en) * | 2003-12-22 | 2009-09-15 | Lenovo Singapore Pte. Ltd. | Key cache management through multiple localities |
| CN100458822C (en) * | 2005-11-30 | 2009-02-04 | 中国科学院自动化研究所 | Smart identification terminal system and method based radio-frequency identification and biological characteristic |
| CN104217483B (en) * | 2014-09-12 | 2017-09-29 | 四川奇御科技开发有限公司 | Campus Security monitoring system |
| CN105512705A (en) * | 2015-12-28 | 2016-04-20 | 广开倍实（天津）科技有限公司 | Fingerprint and RF double-identification data acquisition device |
-
2000
- 2000-12-26 CN CNB00136121XA patent/CN1168041C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101339598B (en) * | 2008-08-15 | 2010-12-08 | 马福禄 | Identity chip portable read-write device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1361496A (en) | 2002-07-31 |
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