CN101079087A - Computer Wireless Peripheral with Swipe Fingerprint Sensing Chip - Google Patents
Computer Wireless Peripheral with Swipe Fingerprint Sensing Chip Download PDFInfo
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Abstract
A computer wireless peripheral device with a sliding fingerprint sensing chip comprises a peripheral device receiving module, a peripheral device body and a sliding fingerprint sensing chip. The peripheral device receiving module is connected to a host system in a wired manner. The peripheral device body is connected with the peripheral device receiving module in a wireless mode. The sliding fingerprint sensing chip is arranged on the peripheral device body and used for sensing a plurality of segment fingerprint images of a finger sliding through the sliding fingerprint sensing chip to obtain a plurality of segment fingerprint analog signals, processing the segment fingerprint analog signals to generate a plurality of segment images which are not overlapped with each other, and outputting the segment images to the peripheral device receiving module through a radio transmitter and a radio receiver. Therefore, the host system can combine the fragment images into a complete fingerprint image in a side-by-side mode, perform fingerprint comparison action and enable at least one application program to be used in the host system after the comparison is successful.
Description
Technical field
The invention relates to a kind of computer radio peripheral apparatus with slide fingerprint sensing chip, for example mouse and key board unit, slide fingerprint sensing chip is sent to the fragment fingerprint image that senses in the computing machine and compares action, and could activate in the computing machine at least one specific application program or the function of radio peripheral apparatus after contrasting successfully.
Background technology
The present invention also is associated to this case inventor's following patent: (a) TaiWan, China application for a patent for invention case number 092133887, the applying date is on Dec 2nd, 2003, and denomination of invention is " containing the guard method of the memory apparatus and the storage data thereof of fingerprint sensing device "; (b) TaiWan, China application for a patent for invention case number 091106806, and the applying date is on April 3rd, 2002, and denomination of invention is " capacitance type fingerprint reads wafer ", and notification number is 583592, and certificate number is No. the 200040th, invention; (c) TaiWan, China application for a patent for invention case number 091110443, Mays 17 in 2002 applying date order, denomination of invention is " pressure type fingerprint reading chip and a manufacture method thereof "; (d) TaiWan, China application for a patent for invention case number 090113755, and on the July 6 calendar year 2001 applying date, denomination of invention is " design and the manufacturing of temperature difference induction type fingerprint identifying chip ", and notification number is 558686, and Certificate Number is No. the 189671st, invention; (e) TaiWan, China application for a patent for invention case number 091118142, and on August 13 2002 applying date, denomination of invention is " the fingerprint reading chip structure of capacitive pressure micro-sensing element and application thereof ", and notification number is 578112, and certificate number is No. the 198398th, invention; (f) TaiWan, China application for a patent for invention case number 090112023, the applying date is May 17 calendar year 2001, denomination of invention is " capacitive pressure micro-sensing element and manufacture method thereof and signal read mode ", now patents, and its Certificate Number is No. the 182652nd, patent of invention; (g) TaiWan, China application for a patent for invention case number 092113528, and the applying date is on May 20th, 2003, and denomination of invention is " sweep fingerprint sensor module and a method for sensing thereof "; (h) TaiWan, China application for a patent for invention case number 092114621, and the application order is on May 29th, 2003, and denomination of invention be " card-type device of tool slide fingerprint sensor ", and certificate number is for inventing No. 225623; And (i) TaiWan, China application for a patent for invention case number 094108291, the applying date is on March 18th, 2005, denomination of invention is " a kind of slide fingerprint sensing wafer and disposal route thereof with image comparison function ".
Known fingerprint reading method can utilize the finger presses that speckles with ink on paper, utilizes optical scanner to scan paper so that fingerprint is imported in the computing machine again, contrasts with the database of fingerprint figure then.Yet the disadvantage of said method is the purpose that can't reach real-time processing, therefore can't satisfy the demand of more and more real-time authentications, for example: network authentication, ecommerce, portable electric product is maintained secrecy, IC-card personal identification, safety system or the like.
Real-time fingerprint reading method just becomes the gordian technique in the biological identification market.Traditionally, can use the optical fingerprint sensor to read fingerprint in real time, yet it have the too huge shortcoming of volume.More because the invention of chip type fingerprint sensor makes that integrating fingeprint distinguisher on compact electronic product no longer is infeasible technology, the correlation technique content can be referring to above-mentioned patent of this case inventor straight three in recent years.For this reason, utilize the chip type fingerprint sensor of silicon semiconductor to arise at the historic moment, overcome the shortcoming of above-mentioned optical sensor, for example the capacitance type fingerprint sensor of the product type LTT-C500 of Xiangqun Science Co., Ltd promptly has this advantage.
Because the size restrictions of finger, the sensing area of known chip type fingerprint sensor is at least greater than 9mm*9mm.Moreover, because the restriction that silicon integrated circuit is made, 6 inches of a slices (time) only can 50 to 70 effective chips of output in the wafer, add the packaging and testing cost, to make the price of single fingerprint sensor at least greater than U.S. dollar more than 10 yuan, this will limit it and be applied to various consumption electronic products, such as mobile computer, mobile phone, personal digital assistant, computer external product, and even the personal identification card of integration fingerprint sensor.
In order to overcome above-mentioned cost problem, the length of conventional two-dimensional chip type fingerprint sensor can be dwindled, use the output number that increases effective chip and reduce the chip unit price.Its principle is to slide through chip surface by finger, finish the scanning of whole finger, again every fragment fingerprint image that captures is set up relevance and store into a referrer module, follow-up use also is identical finger to be slipped over chip surface, and obtain a fingerprint module, by the identity that more just can confirm the user of fingerprint module and referrer module.
Wherein, people such as Mainguet reach Kramer at United States Patent (USP) 6,317 at United States Patent (USP) 6,289 in No. 114 communiques, and No. 508 communiques have disclosed the method for above-mentioned a kind of sweep fingerprint sensor and multiple video serial connection respectively, as Fig. 1 and shown in Figure 2.Figure 1 shows that the configuration diagram that the known applications sweep fingerprint sensor reads as the finger print image.Wherein sensor 110 is an array element, its X direction size approximates the width of finger 120, and y direction (finger glide direction) size is much smaller than the X direction size, finger 120 has a speed of related movement V with sensor 110, that is to say finger 120 is slid through the surface of sensor 110 with speed V, so sensor 110 can successional acquisition fragment fingerprint image (being the continuity fragment fingerprint image 121a-121s that is captured shown in Fig. 2 A).These continuity fragment fingerprint images 121a-121s can be output to a microprocessor 130, and the data volume of each output and is temporary in the random-access memory (ram) 140 shown in Fig. 2 B.Subsequently, microprocessor 130 takes out these continuity fragment fingerprint images 121a-121s, does the fingerprint image joint action by the software logic (algorithm) that is stored in the ROM (read-only memory) (ROM) 150.At first, image 121a and 121b are bonded into image 121ab, and then 121c and 121ab are bonded into 121abc, shown in Fig. 2 C, the rest may be inferred, so that many fragment fingerprint image 121a-121s is bonded into a complete finger print image 122, and the fingerprint full figure 122 shown in Fig. 2 D just.
The advantage of this method is to capture sizable fingerprint image, but do not need large-area sensor, sizable advantage is not only arranged on cost, the quality of identification contrast good also as the large tracts of land fingerprint sensor, for example low False Rate (false access rate) and gather and declares rate (false rejection rate).
Yet the framework of this sensor 110 and method design have some shortcomings.At first, must be at the very many fragment fingerprint images of very short time (＜1 second) acquisition, it needs hundred even more fragment fingerprint image usually.For example (point sliding speed if desired and reach 10cm/sec), if the specification of fingerprint sensor is that (this is the specification of Atmel Fingerchip to 8*280,500dpi), then random access memory 140 needs the capacity (add follow-up map interlinking handle may need more memory buffer (buffer memory)) of about 600Kbytes at least, thereby the cost when having increased system design.6,289,114 patents be utilize first and second fingerprint image come to do in conjunction with to produce one second combining image in conjunction with one first combining image going out with the 3rd fingerprint image, then, second combining image is done in conjunction with to produce one the 3rd combining image with the 4th fingerprint image again.In the case, the shared storer of combining image increases gradually, and memory buffer also must the enough combinations that just can reach all fingerprint images greatly.
Moreover, the connected interface of finishing 130 of (generally can accept time can not above the 2 seconds) chip of sensor 110 and the microprocessors of host computer system in order to satisfy whole identification of fingerprint behavior after finger slips over chip surface in 1 second must be the interface with big frequency range, for example has (Parallel) interface arranged side by side of DMA pattern or rapid serial (Serial) interface of USB2.0, and can't utilize more common I2C or RS232 interface to transmit, limited the elasticity of user's design.
Ericson has disclosed a kind of fingerprint sensing chip design that includes temporary storage in United States Patent (USP) 2003/0021495 case, its great advantage has elasticity when transmitting for the microprocessor image with host computer system, be the problem of capacity requirement of random access memory 140 of above-mentioned host computer system and interface that must be by high frequency range in a short period of time (＜1 second) problem of having transmitted image data still be not resolved, and do not mention the subsequent image processing method that how to solve in this patent application case.
On computer external was used, the mouse of the more existing subsidiary fingerprint sensing functions of known technology, keyboard etc. were by reading the rights of using of the fingerprint decision computing machine of differentiating the user.These mouses, keyboard institute application sensors all are the area-type fingerprint sensors, the unit price costliness, and institute takes up space greatlyyer, is unfavorable for the popularization of product.Along with the development of technology and the convenience of using, the computer peripheral devices of radio function gradually be substituted with the main flow that line apparatus becomes market, same thinking, integrating finger print identification function just becomes an important topic in wireless peripheral unit.Yet, up to the present, the applicant has not seen on wireless computer peripheral unit body and has installed fingerprint sensor, and image is sent to the product or the relevant patent documentation of computer installation contrast by wireless mode, main problem is that present sweep fingerprint sensor need transmit sizable data to host computer system, cause the user must wait for the several seconds to tens of seconds (deciding on employed wireless launcher type), prior art also can't effectively overcome.
The present invention will provide a kind of design, sweep fingerprint sensor is arranged on the wireless device body, and can be effectively the data volume that transmits of reduction, make the fingerprint sensor of the described device body of use that the user can be real-time, and finish the action of contrast at once by host computer system.
Summary of the invention
Therefore, an object of the present invention is to provide a kind of computer radio peripheral apparatus, in order to export in mutual non-overlapping fragment fingerprint image to a host computer system, to reduce the transmission quantity of radio data with slide fingerprint sensing chip.
For achieving the above object, the invention provides a kind of computer radio peripheral apparatus with slide fingerprint sensing chip, it comprises a peripheral unit receiver module, a peripheral unit body and a slide fingerprint sensing chip.Described peripheral unit receiver module is connected to a host computer system by wired mode, and has a radio receiver.Described peripheral unit body links to each other with described peripheral unit receiver module by wireless mode, and has a transmitting set.Described slide fingerprint sensing chip is located on the described peripheral unit body, slide through a plurality of fragment fingerprint images of the finger of one on it and produce a plurality of fragment figure pictures along a glide direction in fact in order to sensing and processing, described a plurality of fragment figure pictures transfer in the described host computer system by described transmitting set, described radio receiver.
In order to quicken the process of fingerprint sensing, in the above-described embodiments, described slide fingerprint sensing chip can comprise a rectangular array sensor, a Gain Adjustable system amplifier, an analog/digital converter, an image comparison module, an input/output interface and a steering logic.Described rectangular array sensor slides through a plurality of fragment fingerprint images of the finger on it and obtains a plurality of fragment fingerprint simulating signals along glide direction in fact in order to sensing.Described Gain Adjustable system amplifier is exported a plurality of amplifying signals then in order to described a plurality of fragment fingerprint simulating signals are amplified.Described analog/digital converter receives and change described a plurality of amplifying signal in regular turn becomes a plurality of digital fragment fingerprint signals.Described image comparison module receives and contrasts described a plurality of digital fragment fingerprint signal, and produces non-overlapping described a plurality of fragment figure pictures mutually one by one.Described input/output interface is electrically connected to the described transmitting set of described peripheral unit body, in order to export described a plurality of fragment figure picture in regular turn, so that described host computer system is kept to the side described a plurality of fragment figure pictures with the limit mode is combined into a complete finger print image to carry out follow-up identification action to described peripheral unit receiver module.Described steering logic is in order to control the running of described rectangular array sensor, described Gain Adjustable system amplifier, described analog/digital converter, described image comparison module and described input/output interface.
In the above-described embodiments, described image comparison module can comprise a storer, an image comparison unit and a memory control unit.Described storer is in order to adjacent two of temporary described a plurality of digital fragment fingerprint signals once.Described image comparison unit is stored in adjacent two of described a plurality of digital fragment fingerprint signals in the described storer in order to contrast, to produce described a plurality of fragment figure picture.Described memory control unit is in order to control the running of described storer and described image comparison unit.
Beneficial effect of the present invention is:
1, do not need complicated treatment circuit, therefore can reach power saving and the effect of product miniaturization;
2, can reduce the cost and the reduction consumed power of sensor chip;
3 and host computer system between the frequency range demand do not need too highly yet, the required storage space of host computer system also can significantly be dwindled;
4, can significantly improve the shortcoming of known technology, improve the advantage that its applicability and user do not need wait image consuming time to transmit.
Description of drawings
Figure 1 shows that the configuration diagram that the known applications sweep fingerprint sensor reads as the finger print image.
Fig. 2 A to 2D shows that known fragment fingerprint image contrasts into an example of a complete finger print image.
Fig. 3 shows the calcspar according to the computer radio peripheral apparatus of first embodiment of the invention.
Fig. 4 display application image sensing chip of the present invention carries out a synoptic diagram of image capture.
Fig. 5 shows the synoptic diagram that the first fragment figure image signal and the second fragment figure image signal of Fig. 4 are done image comparison.
Fig. 6 shows the synoptic diagram that the second fragment figure image signal and the 3rd fragment figure image signal of Fig. 4 are done image comparison.
Fig. 7 shows the calcspar according to the another kind of slide fingerprint sensing chip of first embodiment of the invention.
Fig. 8 shows the calcspar according to the computer radio peripheral apparatus of second embodiment of the invention.
Fig. 9 shows the calcspar according to the computer radio peripheral apparatus of third embodiment of the invention.
The primary clustering symbol description:
AFS～fragment fingerprint simulating signal AFSA～amplifying signal
DFS～digital fragment fingerprint signal DFS1～first fragment figure image signal
DFS2～second fragment figure image signal the DFS3～the 3rd fragment figure image signal
NS～navigation signal OS1～first overlapped signal
OS2～second overlapped signal RFS～fragment figure picture
RFS1～first fragment figure is as RFS2～second fragment figure picture
RFS3～the 3rd fragment figure is as V～speed of related movement
10～slide fingerprint sensing chip, 11～rectangular array sensor
11A～Gain Adjustable system amplifier 12～analog/digital converter
13～image comparison module, 14～I/O (I/O) interface
15～steering logic, 20～peripheral unit receiver module
22～radio receiver, 28～expansion slot
30～peripheral unit body, 32～transmitting set
34～expansion slot, 40～host computer system
50～circumscribed storer or chip card 55～left block
56～right block 57～left block
58～right block 110～sensor
120～finger 121a-121s～fragment fingerprint image
121ab～image 121abc～image
122～complete finger print image, 130～microprocessor
131～ storer 131A, 131B, 131C～buffer zone
132～image comparison unit, 133～memory control unit
134～navigation elements, 140～random-access memory (ram)
150～ROM (read-only memory) (ROM)
Embodiment
Fig. 3 shows the calcspar according to the computer radio peripheral apparatus of first embodiment of the invention.As shown in Figure 3, the computer radio peripheral apparatus with slide fingerprint sensing chip of present embodiment comprises a peripheral unit receiver module 20, a peripheral unit body 30 and a slide fingerprint sensing chip 10.Peripheral unit receiver module 20 is connected to a host computer system 40 by wired mode, and has a radio receiver (can be included in the transceiver) 22.For example, peripheral unit receiver module 20 is to be connected to host computer system 40 by a USB (universal serial bus) (USB) interface, a pcmcia interface, PCI high speed (PCIEXPRESS) interface or an IEEE 1394 interfaces.Host computer system 40 can be computing machine, mobile phone, personal digital assistant etc.Host computer system 40 utilizes its CPU 42 to handle the identification finger print data, and activates at least one application program in identification in host computer system or with the activation that links to each other (enable) of peripheral unit receiver module 20 with peripheral unit body 30 by the back.In the present invention, the peripheral unit body is except comprising above-mentioned sweep fingerprint sensor, also comprised its basic function that need carry out, for example peripheral unit body 30 can be mouse, keyboard, memorizer memory devices, display, tabulating machine or other device, in the present invention, main spirit is how sweep fingerprint sensor is designed in the peripheral unit body, then it is considered as known technology for other functional description, does not give unnecessary details at this.
And be provided with a wireless launcher 32 at peripheral device body, wireless launcher 32 links to each other with peripheral unit receiver module 20 by wireless mode such as a wireless network card (802.11 series) or an infrared ray Ir-Da or a blue bud grafting mouth.Therefore, peripheral unit body 30 links to each other with peripheral unit receiver module 20 by wireless mode, and has transmitting set (can be included in the transceiver) 32.Slide fingerprint sensing chip 10 is to be located on the peripheral unit body 30, in order to sensing and handle to slide through along a glide direction in fact and divide the finger a plurality of fragment fingerprint images of branch it on and produce a plurality of fragment figure pictures, a plurality of fragment figures similarly are to transfer in the host computer system 40 by transmitting set 32, radio receiver 22.
In order to reduce the data volume of transmission, slide fingerprint sensing chip 10 can comprise a rectangular array sensor 11, a Gain Adjustable system amplifier 11A, an analog/digital (A/D) converter 12, an image comparison module 13, an I/O (I/O) interface 14 and a steering logic 15 in the present invention.Rectangular array sensor 11 can be formed at earlier on the substrate, and substrate is silicon materials in the present embodiment.Principle of sensors can be condenser type, pressure type or thermal type sensing element, and is disclosed to (e) in above-mentioned patent (b) as this case applicant, do not give unnecessary details at this.
Suppose that the 3rd fragment figure is the output signal of finishing touch as RFS3, then since a plurality of fragment figures as RFS mutual non-overlapping each other, so first fragment figure as RFS1 and second fragment figure as RFS2 any one of data volume be less than or equal to the data volume of the 3rd fragment figure as RFS3.
By this, host computer system 40 can be combined into the mode that a plurality of fragment figures keep to the side with the limit as RFS a complete finger print image to carry out follow-up identification action.After contrast to be identified was finished, at least one application program (for example computed authority) in can the active host system or the function of peripheral unit body 30 for example received the signal-arm of mouse, receive the keyboard signal of keyboard etc.
Fig. 4 display application image sensing chip of the present invention carries out a synoptic diagram of image capture.Fig. 5 shows the synoptic diagram that the first fragment figure image signal and the second fragment figure image signal of Fig. 4 are done image comparison.Fig. 6 shows the synoptic diagram that the second fragment figure image signal and the 3rd fragment figure image signal of Fig. 4 are done image comparison.Image comparison module 13 is done earlier to export after the image contrast after receiving the first fragment figure image signal DFS1 and the second fragment figure image signal DFS2 again.At this moment, first fragment figure is the non-overlapped image of part of the first fragment figure image signal DFS1 deduction and the second fragment figure image signal DFS2 lap as RFS1.In order to dwindle the electric power consumption of chip area, saving cost and reduction chip apparatus of the present invention, the arithmetic logic (algorithm) that image comparison module of the present invention (it is an integrated circuit) is adopted must be quite simple, the frameworks such as DSP that do not need microprocessor or other floating-point operation, only just can handle, just can reach the requirement that area is little, speed reaches power saving soon by general DLC (digital logic circuit).The image comparison logic that is adopted in embodiments of the present invention is an intensity distributions between continuous two images of contrast, only needs the computing of subtraction on mathematics, therefore can utilize DLC (digital logic circuit) to finish easily.
In order to reach the function of image comparison, image comparison module 13 comprises a storer 131, an image comparison unit 132 and a memory control unit 133.Storer 131 can be in order to adjacent two of temporary these digital fragment fingerprint signal DFS once, the for example first fragment figure image signal DFS1 and the second fragment figure image signal DFS2 of Fig. 5, or the second fragment figure image signal DFS2 of Fig. 6 and the 3rd fragment figure image signal DFS3.Image comparison unit 132 is stored in adjacent two of these digital fragment fingerprint signal DFS in the storer 131 in order to contrast, and the mathematical logic by foregoing description is to produce these fragment figures as RFS.Memory control unit 133 is in order to the running of the control store 131 and the image comparison unit 132 that links to each other.
By above-mentioned image sensing chip of the present invention, the disposal route that can provide comprises following steps.
At first, sensing one is pointed a plurality of fragment fingerprint images when sliding and is obtained a plurality of fragment fingerprint simulating signal AFS.Then, fragment fingerprint simulating signal AFS is done the appropriateness amplification and export amplifying signal AFSA then.Then, changing these amplifying signals AFSA in regular turn becomes a plurality of digital fragment fingerprint signal DFS, and these digital fragment fingerprint signal DFS comprise one first fragment figure image signal DFS1, one second fragment figure image signal DFS2 and one the 3rd fragment figure image signal DFS3 at least in regular turn.Then, wantonly two adjacent these the digital fragment fingerprint signal DFS of successional contrast, and successional generation mutually non-overlapping a plurality of fragment figures as RFS, these fragment figures as RFS comprise at least in regular turn one first fragment figure as RFS1, one second fragment figure as RFS2 and one the 3rd fragment figure as RFS3.And the fragment figure of these continuity non-overlapping copies can be temporary in buffer zone 131C by memory control unit 133 management as RFS, export host computer system 40 by steering logic 15 keyholed back plates to by I/O interface 14 again, and picture is piled up wood block type and is combined into a complete finger print image with what kept to the side in these fragment fingerprint image limits.
The detailed step system that contrasts the method for these digital fragment fingerprint signal DFS is described as follows.At first, as Fig. 5 and shown in Figure 3, receive and store the first fragment figure image signal DFS1 and the second fragment figure image signal DFS2 respectively by buffer zone 131A, the 131B of storer 131.Then, contrast is done to obtain one first overlapped signal OS1 with the first fragment figure image signal DFS1 and the second fragment figure image signal DFS2 in image comparison unit 132.Then, the first fragment figure image signal DFS1 is deducted the first overlapped signal OS1 to obtain and to export first fragment figure as RFS1.Therefore, first fragment figure falls the overlapped signal OS1 of the first fragment figure image signal DFS1 and the second fragment figure image signal DFS2 as RFS1 for deduction from the first fragment figure image signal DFS1.Then, steering logic 15 exports first fragment figure to host computer system 40 as RFS1 by I/O interface 14.
Then, as Fig. 6 and shown in Figure 3, remove the first fragment figure image signal DFS1 that is stored in the storer 131.Then, the buffer zone (such as 131A) by the sky of storer 131 receives and stores the 3rd fragment figure image signal DFS3.Then, the second fragment figure image signal DFS2 and the 3rd fragment figure image signal DFS3 are contrasted to obtain one second overlapped signal OS2.Then, the second fragment figure image signal DFS2 is deducted the second overlapped signal OS2 to obtain and to export second fragment figure as RFS2.At last, the 3rd fragment figure image signal DFS3 is mended a little and gives up a little to produce and to export the 3rd fragment figure as RFS3.Though it should be noted that the foregoing description is to look like to explain with three fragment figure image signals and three fragment figures, the present invention is not subject to this, and the present invention also is applicable to fragment figure image signal and the fragment figure picture that two or three are above.Because relevant treatment step all is similarly, its explanation of Therefore, omited.
Because in the process of contrast, can add up by signal DFS1 and DFS2 and signal DFS2 and DFS3 and learn that the 3rd fragment figure image signal DFS3 is offset with respect to the first fragment figure image signal DFS1 to the right, therefore second fragment figure comprises left block 55 as RFS2 but does not comprise right block 56, and the 3rd fragment figure comprises left block 57 as RFS3 but do not comprise right block 58.
In order effectively to manage and reduce the capacity requirement of storer 131, a succession of action comprises that storer writes, the essential speed that will slide faster than finger of the speed of the output of image contrast cell processing and fragment image, in the present embodiment at least need be less than 1 millisecond (ms).
Therefore, storer 131 is as long as store two sheet segment signals, so a minimum capacity of storer 131 equals the twice of one of each digital fragment fingerprint signal DFS data volume in fact.
So far, chip apparatus of the present invention is by image comparison unit and memory control method formula, fragment fingerprint image that can successional output.When finger is placed on it and is mobile, by judging that (for example length changes these some successional fragment figures and the speed of change as output format, or the width of block 57 and 58 changes and the speed of change), the mobile message of X-Y axle just can be provided, and similarly is that finger moves on digiboard.
Fig. 7 shows the calcspar according to the another kind of slide fingerprint sensing chip of first embodiment of the invention.As shown in Figure 7, present embodiment is similar to first embodiment, and difference is that image comparison module 13 also comprises a navigation elements 134, and its running is controlled by steering logic 15.Navigation elements 134 as adjacent both relative motion relation that RFS and these digital fragment fingerprint signal DFS calculate these digital fragment fingerprint signal DFS, is used the running with an index system (such as cursor of mouse system) of main control system system 40 by input/output interface 14 outputs one navigation signal NS according to these fragment figures.
Slide fingerprint sensing chip that it should be noted that present embodiment can only provide the function of output navigation signal NS, and not necessarily will export above-mentioned fragment figure picture.
Fig. 8 shows the calcspar according to the computer radio peripheral apparatus of second embodiment of the invention.As shown in Figure 8, present embodiment is similar to first embodiment, and difference is that peripheral unit body 30 also has an expansion slot 34, uses and finishes connection for a circumscribed storer or chip card 50 inserts.
In the case, peripheral unit body 30 still can be mouse, keyboard, memorizer memory devices, display, tabulating machine or other device.
Fig. 9 shows the calcspar according to the computer radio peripheral apparatus of third embodiment of the invention.As shown in Figure 9, present embodiment is similar to first embodiment, and difference is that peripheral unit receiver module 20 also has an expansion slot 28, uses and finishes connection for a circumscribed storer or chip card 50 inserts.In this embodiment, circumscribed storer or chip card 50 are to be connected with host computer system 40 by wired mode.
By the foregoing description of the present invention, the slide fingerprint sensing chip with image comparison function uses simple logical operation get final product when carrying out contrast, does not need complicated treatment circuit, so can reach power saving and with the effect of product miniaturization.In addition, because the minimum capacity of storer can equal the twice of one of each digital fragment fingerprint signal data volume, therefore can reduce the cost of sensor chip and reduce consumed power.In addition, because each data quantity transmitted can not overlap each other greater than the data volume of a digital plate section fingerprint signal and in twos, therefore data volume that sensor chip of the present invention transmits only is about 1/10 of traditional slide fingerprint sensing chip data volume, therefore and the frequency range demand between the host computer system do not need too highly yet, the required storage space of host computer system also can significantly be dwindled.Also because above-mentioned all technical characteristics, sweep fingerprint sensor can be arranged on the wireless peripheral unit body, and, the fragment figure picture can transfer in the host computer system with interior at one to three second easily by wireless mode, can significantly improve the shortcoming of known technology, improve the advantage that its applicability and user do not need wait image consuming time to transmit.
The specific embodiment that is proposed in the detailed description of preferred embodiment is only in order to convenient explanation technology contents of the present invention, but not with narrow sense of the present invention be limited to the foregoing description, in the situation that does not exceed spirit of the present invention and claim, the many variations of being done is implemented, and all belongs to scope of the present invention.
Claims (13)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200610084647A CN101079087B (en) | 2006-05-26 | 2006-05-26 | computer wireless peripheral device with sliding fingerprint sensing chip |
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| CN101079087B CN101079087B (en) | 2010-05-12 |
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| CN105574473A (en) * | 2014-10-16 | 2016-05-11 | 茂丞科技股份有限公司 | Sliding fingerprint image processing device and sliding fingerprint image processing method |
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