CN1317670C - Fingerprint certification apparatus and method capable of receiving signal from wireless mouse and wireless keyboard - Google Patents

Abstract

The present invention relates to a fingerprint authentication device capable receiving signals of a wireless mouse and a wireless keyboard. The fingerprint authentication device is characterized in that based on a publicly known fingerprint recognition module, a wireless signal reception circuit and a USB interface circuit are is additionally arranged, wherein the USB interface circuit is respectively connected with the wireless signal reception circuit, the fingerprint recognition module and a USB interface circuit arranged in a computer. The present invention also relates to a fingerprint authentication method which mainly comprises the steps that the wireless signal reception circuit detects wireless signals of the wireless keyboard and the wireless mouse; a fingerprint validation program is started; if validation passes, the subsequent answering processing processes are completed, and an input passage is started; or else, the input channel for illegally operating the wireless keyboard and the wireless mouse is closed. The present invention has the advantages that the collocation pattern of standard peripherals of the computer and special-purpose peripherals is innovated, and the collocation pattern is promoted to develop towards intensification; an identity authentication function is moved forwards to the peripherals from host computers; the interface resources of computer wireless peripherals are integrated.

Description

Can receive the finger print identifying equipment and the method for wireless mouse and Wireless Keyboard signal

Technical field

The present invention relates to a kind of fingerprint certification device and method, especially can receive the finger print identifying Apparatus and method for of wireless mouse and Wireless Keyboard signal.

Background technology

At present, known fingerprint identification device is by fingerprint sensor, fingerprint identification processor, FLASH storer, I/O interface circuit etc., connects host computer and forms referring to accompanying drawing 1.Staff contact fingerprint sensor is gathered fingerprint image, with it be stored in fingerprint template in FLASH or the host computer in advance and mate and keep the score.If score value is greater than setting threshold, then be judged to and wait to look into fingerprint and fingerprint template for same finger, checking is passed through.Otherwise, think two pieces of fingerprint mismatches, authentication failed.

But known fingerprint identification device can not sensing and is responded wireless mouse and wireless signal that Wireless Keyboard sends, and the man-machine interaction of finger print identifying process must independently the I/O interface be circuitous carries out via two, and peripheral hardware burden, interface overhead are big; Known wireless mouse and Wireless Keyboard can not be discerned user's identity, can not cut off the input channel of illegal use mouse/keyboard; After illegal user opened input channel, the known safety precautions of host computer on i.e. Windows login/screen protection, key management, the online password login four processes, all lacked the finger print identifying means.More than three aspects seem isolated potential safety hazard mutual superposition, cause the security performance of whole finger print identifying and host computer system to reduce.

Summary of the invention

Can not sensing and handle wireless mouse and Wireless Keyboard signal in order to overcome existing finger print identifying equipment; Existing wireless mouse, keyboard receiving trap can not identifying operation person identity; Lack the finger print identifying measure in the known safety practice of host computer, the safety defect that this three aspect is caused, the invention provides a kind of finger print identifying equipment that can receive wireless mouse and Wireless Keyboard signal, this device can not only detect, handle the wireless signal that wireless mouse and Wireless Keyboard send easily, makes the function of its wireless human-computer interactive of bringing into normal play; Can also be discerned wireless mouse and Wireless Keyboard operator's identity, in time be cut off illegal keyboard/mouse input operation; Do not increasing in addition under hardware device and the I/O interface case; use the finger print information and the authentication function that contain in this authenticating device; to the existing security implementation of host computer; be that Windows login/screen protection, key management, online password are logined this four processes; add the finger print identifying measure; reach and both improve the security of system performance, increase the purpose of system's ease for use again.

The technical solution adopted for the present invention to solve the technical problems is: this finger print identifying equipment that can receive wireless mouse and Wireless Keyboard signal mainly comprises the known fingerprint identification module that is made of fingerprint sensor 1.1, fingerprint identification processor 1.2, FLASH storer 1.3 and interface circuit.On the basis of known fingerprint identification module, wireless signal receiving circuit 2.1 and usb circuit 2.2 have been set up, the I/O interface that will have fingerprint identification module simultaneously now changesusb 1 .41 into, and usb circuit 2.2 is connected with usb circuit 1.41, the usb circuit 1.5 in the computing machine in wireless signal receiving circuit 2.1, the fingerprint identification module respectively.

The technical solution adopted for the present invention to solve the technical problems can also be further perfect.Described usb circuit 2.2 mainly comprises USB single chip circuit 2.21 and USB line concentration circuit 2.22, and wireless signal receiving circuit 2.1 is connected with USB line concentration circuit 2.22 by USB single chip circuit 2.21; A road of USB line concentration circuit 2.22 is connected with usb circuit 1.41 in the fingerprint identification module; Another road is connected with usb circuit 1.5 in the computing machine.

1), wireless signal receiving circuit 2.1 detects the wireless signal of Wireless Keyboard and mouse the fingerprint verification method that can receive wireless mouse and Wireless Keyboard signal of the present invention mainly may further comprise the steps:; 2), start the fingerprint authentication program, carry out fingerprint authentication by fingerprint identification module; 3), pass through, promptly finish the follow-up treatment scheme of replying, and open input channel, make wireless signal receiving circuit 2.1, fingerprint identification module and host computer carry out the interactive signal transmission by usb circuit 2.2 as checking; 4) otherwise, the input channel of sealing Wireless Keyboard, mouse illegal operation.

Fingerprint verification method of the present invention by above-mentioned checking after, start host computer Windows login/screen protection with fingerprint again; Use the fingerprint extraction key, carry out file encryption-decryption; Login on the net with the fingerprint extraction password.

Described with fingerprint startup Windows login/screen protection; after being the host start; finger print identifying equipment of the present invention is taken over the flow process control of Windows login/screen protection at once; with the finger print identifying program of flow process sensing based on this authenticating device; if not by checking, stop the Windows login at once or open screen flow.The steps necessary that wherein comprises is: 1, Equipment Serial Number checking, computing machine reads the sequence number 8.5 of authenticating device earlier, with it with PC in the sequence number stored in advance compare 8.6; 2, logon rights checking; 3, fingerprint authentication.

The described fingerprint key-extraction of using is carried out file encryption-decryption, and the key step that comprises is: 1, Equipment Serial Number checking; 2, fingerprint authentication; 3, extract key; 4, to file encryption-decryption; 5, deletion original.

Describedly login on the net with the fingerprint extraction password, the key step that comprises is: 1, fingerprint authentication; 2, extract password; 3, online login is submitted to.

The effect that the present invention is useful is: 1, fingerprint certification device directly receives, handles wireless mouse and Wireless Keyboard signal, has reformed the configuration general layout of computer standard peripheral hardware and special-purpose peripheral hardware, and short its develops towards the intensification direction; 2, identity authentication function moves forward to external unit from host computer, has opened up security of system strategy new approaches, new channel; 3, change circuitous information flow direction in the existing identifying procedure, improve the general safety grade of fingerprint identification system; 4, the interface resource of integrated computer wireless peripheral is broken away from many cable constraints; 5, quote biological information, improve the safety practice of active computer in manipulating.

Description of drawings

Fig. 1 is the structured flowchart of existing fingerprint identification system;

Fig. 2 is a structured flowchart of the present invention;

Fig. 3 is a usb circuit pie graph of the present invention;

Fig. 4 is the transmission processing sequence of wireless receiving signal of the present invention;

Fig. 5 is that the wireless signal ofembodiment 1 connects manipulated or operated apparatus;

Fig. 6 is the USB single chip circuit figure ofembodiment 1;

Fig. 7 is the USB line concentration circuit diagram ofembodiment 1;

Fig. 8 is the Windows login/screen protection program block diagram ofembodiment 2;

Fig. 9 is the file encryption-decryption flow chart ofembodiment 3;

Figure 10 is the fingerprint extraction password program block diagram ofembodiment 4.

Embodiment

Below in conjunction with embodiment and accompanying drawing the present invention is further described.

Embodiment 1: this finger print identifying equipment that can receive wireless mouse and Wireless Keyboard signal, and circuit part is connected to form by fingerprint sensor 1.1, fingerprint identification processor 1.2, FLASH storer 1.3, USB interface, wireless signal receiving circuit 2.1, USB single chip circuit 2.21, USB line concentration circuit 2.22; Wherein USB line concentration circuit 2.22 couples together fingerprint identification module, radio receiver and the host computer three of containing usb circuit respectively.

Wireless signal receiving circuit 2.1 mainly comprises mixting circuit 4.1, intermediate frequency filtering circuit 4.2, intermediate frequency amplifier circuit 4.3, frequency-discriminating circuit 4.4, low-pass filter circuit 4.5 and decision circuit 4.6.The transmission processing sequence of the wireless signal that is received is seen accompanyingdrawing 4, and the annexation between each circuit is referring to accompanying drawing 5: the wireless signal that receives from antenna inserts the pin 20 (MIXI) of receiving chip U8 after high-frequency amplifier circuit amplifies; After the mixing of chip internal mixting circuit, insert outside intermediate frequency filtering circuit 4.2 from pin 3 (MIXO), insert the pin 5 (IFIN) of intermediate frequency input receiving chip U8 after the filtering; The chip internal circuit carries out intermediate frequency and amplifies, the pin 8 (IFO) of receiving chip U8 causes outside phase shift frequency-discriminating circuit 4.4 with the intermediate-freuqncy signal that is exaggerated, loopback pin 9 (QUAD) is sent into outside low-pass filter circuit 4.5 to the signal demodulation from pin 10 (AFO) again; Filtered restituted signal enters the pin 11 (LPFI) of receiving chip U8, and after amplifying, adjudicate at chip internal, (FSKO) exports digital signal at last frompin 15.

The present embodiment wireless receiving circuit, the process chip that adopts is HT9124, the Wireless Keyboard frequency of operation active channel 127.185MHz that is received, mouse performance frequency active channel 227.085MHz, during work between mouse and Wireless Keyboard or a plurality of mouse interference lower, nor can influence digital radio devices such as wireless telephone.

Comprise in the described USB single chip circuit 2.21: 1, USB process chip; 2, local oscillation circuit; 3, mu balanced circuit.Annexation between each circuit is referring to accompanying drawing 6: from the digital signal of wireless signal receiving circuit output, insert the pin 14 (PC0/RxC0) of USB process chip U2; Being processed into the signal that meets the USB standard is exported by pin 41 (USB D-) and pin 42 (USB D+); Voltage stabilizing chip pin 1 (Vout), output+3.3v supplies with USB pin 44 (Vcc), guarantees chip operating voltage; Crystal oscillator input pin 8 (XIN), 9 (XOUT) constitute local oscillation circuit.

Present embodiment USB single chip circuit, the process chip of employing are the 2N2135SC single-chip microcomputers of Sypress company, and it is integrated 51 single-chip microcomputer kernels have USB interface, and operating voltage is 3.3V, work dominant frequency 12M.As shown in Figure 6, present embodiment has been used the 3.3V operating voltage that more typical 12M crystal oscillating circuit and AMC76382 voltage stabilizing chip provide.This single-chip microcomputer can make things convenient for the upgrading of drive software by PC down load application program.

Comprise in the described USB line concentration circuit 2.22: 1, line concentration chip; 2, local oscillation circuit; 3, interface power protecting circuit.Annexation between each circuit is referring to accompanying drawing 7: the pin 1 (USB2_DM), the pin 2 (USB2_DP) that insert USB line concentration chip U4 from digital signal DM2, the DP2 of USB single chip circuit output; After the line concentration chip is handled, link PC from pin 25 (USB_DM), 26 (USB_DP), link fingerprint identification module from 27 (USB1_DM), 28 (USB1_DP).Crystal oscillator and USB line concentration chip U4 input pin 20 (XTAL1), 21 (XTAL2) constitute local oscillation circuit.

Present embodiment USB line concentration circuit, adopted the USB HUB chip AU9254A21 of USB1.1 agreement the most general on the present market, frequency of operation 12M, operating voltage directly adopts the 5V power supply of USB mouth, cooperates by simple capacitance-resistance and realizes that 1changes 4 USB HUB function.Be noted that when demultiplexing USB mouth, the most handy resettable fuse as each USB device power protection, can guarantee the normal operation of another pipeline equipment when a pipeline equipment goes wrong so therein, improve the reliability of circuit.

Embodiment 2: present embodiment is that the flow process of fingerprint startup Windows login/screen protection program design is: at first show finger print identifying login interface 8.1, read sequence number and device parameter 8.2～8.3 from PC again, if can not successfully open finger print identifying equipment 8.4, then to differentiate whether allow login password 8.10; After obtaining to allow, eject the default login frame of Windows, login 8.11 with password.If successfully open finger print identifying equipment 8.4; host computer reads the sequence number 8.5 of authenticating device earlier; with in it and the PC in advance the sequence number of storage compare 8.6; by after, also to judge whether logon rights 8.7, obtain legal logon rights after; just verify fingerprint 8.8 at last; by after, successfully login 8.9, perhaps open screen protection.

Embodiment 3: present embodiment is the fingerprint management key, carry out the file encryption-decryption function, designed program circuit is: at first open finger print identifying equipment, read sequence number 9.1 wherein, the sequence number of it and PC is complementary 9.2, if, then verify fingerprint by 9.3, extract key 9.4 by the back, file is carried out encryption and decryption handle 9.5; If original 9.7 is then deleted in encryption and decryption success 9.6.

Embodiment 4: present embodiment is for using the fingerprint extraction password, submitting/login the program circuit that is adopted on the net is: at first start webpage 10.1, on the finger print identifying equipment of local side, press finger 10.2, if checking is by 10.3, then the username and password with prior typing proposes out 10.4, inserts webpage and submits 10.5 to.

Claims (10)

1, a kind of finger print identifying equipment that can receive wireless mouse and Wireless Keyboard signal, mainly comprise the fingerprint identification module that is made of fingerprint sensor (1.1), fingerprint identification processor (1.2), FLASH storer (1.3) and interface circuit (1.4), it is characterized in that: the interface circuit in the fingerprint identification module (1.4) adopts usb circuit (1.41); Set up wireless signal receiving circuit (2.1) and usb circuit (2.2), usb circuit (2.2) is connected with usb circuit (1.41), the usb circuit (1.5) in the computing machine in wireless signal receiving circuit (2.1), the fingerprint identification module respectively.

2, the finger print identifying equipment that can receive wireless mouse and Wireless Keyboard signal according to claim 1, it is characterized in that: described usb circuit (2.2) mainly comprises USB single chip circuit (2.21) and USB line concentration circuit (2.22), and wireless signal receiving circuit (2.1) is connected with USB line concentration circuit (2.22) by USB single chip circuit (2.21); A road of USB line concentration circuit (2.22) is connected with usb circuit (1.41) in the fingerprint identification module; Another road is connected with usb circuit (1.5) in the computing machine.

3, the finger print identifying equipment that can receive wireless mouse and Wireless Keyboard signal according to claim 1 and 2, it is characterized in that: described wireless signal receiving circuit (2.1) mainly comprises mixting circuit (4.1), intermediate frequency filtering circuit (4.2), intermediate frequency amplifier circuit (4.3), frequency-discriminating circuit (4.4), low-pass filter circuit (4.5) and decision circuit (4.6).

4, the finger print identifying equipment that can receive wireless mouse and Wireless Keyboard signal according to claim 3, it is characterized in that: antenna is connected with the input end of high-frequency amplifier circuit, and the output terminal of high-frequency amplifier circuit is connected with the pin 20 of receiving chip U8; The pin 3 of receiving chip U8 is connected with outside intermediate frequency filtering circuit (4.2), and the output terminal of intermediate frequency filtering circuit (4.2) is connected with the pin 5 of receiving chip U8, promptly middle frequency input terminal; The pin 8 of receiving chip U8 is connected with frequency-discriminating circuit (4.4) input end, and the output terminal of frequency-discriminating circuit (4.4) is connected with the pin 9 of receiving chip U8; The pin 10 of receiving chip U8 is connected with the input end of low-pass filter circuit (4.5), and the output terminal of low-pass filter circuit (4.5) is connected with the pin 11 of receiving chip U8.

5, according to the described finger print identifying equipment that can receive wireless mouse and Wireless Keyboard signal of claim 2, it is characterized in that: described USB single chip circuit (2.21) mainly comprises USB process chip U2, local oscillation circuit and mu balanced circuit.

6, the finger print identifying equipment that can receive wireless mouse and Wireless Keyboard signal according to claim 5 is characterized in that: the pin 15 of receiving chip U8 is connected with the pin 14 of USB process chip U2 in the wireless signal receiving circuit (2.1); Voltage stabilizing pin of chip 1 in the mu balanced circuit is connected with the pin 44 of USB process chip U2; Crystal oscillator is connected with pin 9 with the pin 8 of USB process chip U2, constitutes local oscillation circuit.

7, the finger print identifying equipment that can receive wireless mouse and Wireless Keyboard signal according to claim 2, it is characterized in that: described USB line concentration circuit (2.22) mainly comprises line concentration chip U4, local oscillation circuit and interface power protecting circuit.

8, the finger print identifying equipment that can receive wireless mouse and Wireless Keyboard signal according to claim 7, it is characterized in that: the output terminal pin 41 of USB process chip U2 is connected with pin 2 with the pin 1 of USB line concentration chip U4 respectively with pin 42, the pin 25 of USB line concentration chip U4 is connected with computing machine with pin 26, and the pin 27 of USB line concentration chip U4 is connected with fingerprint identification module with pin 28; Crystal oscillator is connected with pin 21 with the pin 20 of USB line concentration chip U4, constitutes local oscillation circuit.

1), wireless signal receiving circuit (2.1) detects the wireless signal of Wireless Keyboard and mouse 9, a kind of fingerprint verification method that can receive wireless mouse and Wireless Keyboard signal is characterized in that: mainly may further comprise the steps:; 2), start the fingerprint authentication program, carry out fingerprint authentication by fingerprint identification module; 3), pass through, promptly finish the follow-up treatment scheme of replying, and open input channel, make wireless signal receiving circuit (2.1), fingerprint identification module and host computer carry out the interactive signal transmission by usb circuit (2.2) as checking; 4) otherwise, the input channel of sealing Wireless Keyboard, mouse illegal operation.

10, the fingerprint verification method that can receive wireless mouse and Wireless Keyboard signal according to claim 9, it is characterized in that: after the main frame start, finger print identifying equipment of the present invention is taken over the Windows login at once, startup finger print identifying program is pointed in flow process control, not by what verify, stop start at once; 1), Equipment Serial Number checking the steps necessary that wherein comprises is:: computer reads the sequence number (8.5) of authenticating device earlier, with it with PC in the sequence number stored in advance compare (8.6); 2), logon rights checking; 3), fingerprint authentication.

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