CN105989349B - Fingerprint registration data generation method and electronic device - Google Patents

Abstract

A fingerprint registration data generation method includes: extracting a first input data, wherein the first input data is divided into a plurality of first blocks, and each of the first blocks has an index value; extracting a second input data, wherein the second input data is divided into a plurality of second blocks, and each of the second blocks has the index value; comparing and combining the first input data and the second input data to generate a combination result, performing an accumulation operation on the index values of the first blocks and the second blocks that are repeated in the first input data and the second input data; and generating a prompt message according to the combination result.

Description

Fingerprint registration data generation method and electronic device

technical field

The specification of the present invention mainly relates to the technique of generating fingerprint registration data, and particularly relates to the technique of generating fingerprint registration data indicating the moving direction of the user's finger through prompt information.

Background technique

In recent years, with the advancement of biometric technology and because passwords and cards are more likely to be stolen or lost and have low security, fingerprint recognition technology has also gained more and more attention. Fingerprint recognition has uniqueness, invariance, and the multiplicity of fingerprint recognition can be performed by the user's fingers, and the fingerprint image is easy to obtain. Therefore, the security performance and convenience have been greatly improved, and it will become more effective for financial security or data confidentiality.

The traditional fingerprint identification technology can be divided into two methods: brush type or push type. Fingerprint sensing devices with a small area usually register fingerprint data required for fingerprint recognition in a pressing manner. Since the pressing area is too small, the user often needs to press many times to complete the creation of the registration data. In addition, when the user performs the operation of registering the fingerprint data required for fingerprint recognition, he often habitually puts a certain part of the finger on the fingerprint sensing device. Therefore, the range covered by the established registration data is not enough, which leads to an increase in the failure rate of fingerprint identification.

Therefore, when the user is creating registration data for fingerprint recognition, how to provide a more efficient method to prompt the user to move the finger will be a topic worthy of research.

Contents of the invention

In view of the above-mentioned problems in the prior art, the present invention provides a technique for generating registration data of a fingerprint indicating the moving direction of the user's finger through prompt information.

According to an embodiment of the present invention, a method for generating registration data of fingerprints is provided. The steps of the fingerprint registration data generation method include: extracting a first input data, wherein the first input data is divided into a plurality of first blocks, and each of the first blocks has an index value; extracting a second Input data, wherein the above-mentioned second input data is divided into a plurality of second blocks, and each of the above-mentioned second blocks has the above-mentioned index value; comparing and combining the above-mentioned first input data and the above-mentioned second input data to generate a combination As a result, an accumulative operation is performed on the index values of the overlapping first block and the second block in the first input data and the second input data; and a prompt message is generated according to the combination result.

An embodiment of the present invention provides an electronic device. The electronic device includes a fingerprint sensor and a processing unit. The fingerprint sensor is used to extract a first input data, wherein the above-mentioned first input data is divided into a plurality of first blocks, and each of the above-mentioned first blocks has an index value, and extract a second input data, wherein the above-mentioned first block The two input data are divided into a plurality of second blocks, and each of the second blocks has the above index value. The processing unit is used for comparing and combining the first input data and the second input data to generate a combined result, and generate a prompt message according to the combined result. In addition, when the combination result is generated, the processing unit performs an accumulation operation on the index values of the first block and the second block that overlap each other in the first input data and the second input data.

With regard to other additional features and advantages of the present invention, those skilled in the art, without departing from the spirit and scope of the present invention, can implement the user device, system, and method for executing the contact program disclosed in the implementation method of this case, With minor changes and embellishments.

Description of drawings

FIG. 1 is a block diagram showing an electronic device 100 according to an embodiment of the invention.

FIG. 2 is a schematic diagram of an accumulation operation according to an embodiment of the invention.

FIG. 3 is a flowchart 300 of a method for generating fingerprint registration data according to an embodiment of the present invention.

Wherein, the reference signs are explained as follows:

100 fingerprint comparison device

110 Fingerprint sensor

120 processing units

130 storage units

300 flow chart

Detailed ways

The description in this chapter is the best way to implement the present invention. The purpose is to illustrate the spirit of the present invention rather than to limit the protection scope of the present invention. The protection scope of the present invention should be defined by the appended claims.

FIG. 1 is a block diagram showing an electronic device 100 according to an embodiment of the invention. According to an embodiment of the present invention, the electronic device 100 may refer to an electronic device with a fingerprint identification function, such as a mobile phone, a smart phone, a tablet computer, or a notebook computer. As shown in FIG. 1 , the electronic device 100 includes a fingerprint sensor 110 , a processing unit 120 and a storage unit 130 . The block diagram in FIG. 1 is only for conveniently illustrating the embodiment of the present invention, but the present invention is not limited thereto.

According to an embodiment of the present invention, the fingerprint sensor 110 refers to a small-area sensor. That is to say, the sensing area of the fingerprint sensor 110 is much smaller than the sensing area of a finger. Therefore, when the user wants to create registration data for fingerprint identification, the fingerprint sensor 110 needs to perform multiple fingerprint data extraction operations to generate relatively complete registration data for the user to perform fingerprint identification. According to an embodiment of the present invention, the storage unit 130 is used for storing registration data.

According to an embodiment of the present invention, when the user wants to register the registration data required for fingerprint identification, the user will place the finger to be registered on the fingerprint sensor 110 of the electronic device 100, and the fingerprint sensor 110 will scan the user's fingerprint to extract a first input data. In addition, the processing unit 120 divides the first input data into a plurality of first blocks with the same area, wherein the same area refers to including the same number of pixels, and each first block has an initial index value (or initial weight value), for example, the initial index value can be 1.

After extracting the first input data, the user will put his finger on the fingerprint sensor 110 of the electronic device 100, and the fingerprint sensor 110 will scan the user's fingerprint again to extract a second input data, and the processing unit 120 will The second input data is divided into a plurality of second blocks with the same area, and each second block has an initial index value (or initial weight value), for example, 1. Note that the number of first blocks contained in the first input data and the number of second blocks contained in the second input data are equal, and the first block of the first input data and the second block of the second input data The initial index values of the second blocks of are all the same, for example, both are 1. In addition, the area of each input data can be regarded as the sensing area of the fingerprint sensor 110 .

According to an embodiment of the present invention, after obtaining the first input data and the second input data, the processing unit 120 compares the first input data and the second input data to generate a combined result. According to an embodiment of the present invention, the processing unit 120 will combine the first input data and the second input data, that is, the processing unit 120 will determine the same block as the second input data in the first input data. In other words, a portion of the first block of the first input data is identical to a portion of the second block of the second input data. The processing unit 120 accumulates the index values of the first block and the second block that are the same due to repeated input. Therefore, in the combined result, the progressive index value of the first block that is not repeated with any second block will remain as 1, and the progressive index value of the first block that is repeated with any second block will be 2. The progressive index value of the second block which is not repeated with any first block will remain as 1. That is to say, blocks that overlap with each other will have higher progressive index values.

According to an embodiment of the present invention, after obtaining the combination result, the processing unit 120 determines whether the total area of the combination result is greater than a threshold. If the total area of the combination result is greater than the threshold value, the processing unit 120 stops extracting fingerprint data. That is to say, when the total area of the combined result is greater than a critical value, it means that the range covered by the registration data (ie, the combined result) is sufficient. Therefore, the processing unit 120 will prompt the user to not need to input the fingerprint data. According to an embodiment of the present invention, the threshold value is a multiple of the sensing area of the fingerprint sensor 110 , for example, the multiple value can be an integer greater than or equal to 2.

If the total area of the combination result is not greater than the critical value, the processing unit 120 will generate a prompt message according to the combination result to inform the user when performing the next fingerprint data input (for example, a third input data), that is, Place the finger on the fingerprint sensor 110 , the direction and location where the finger needs to move.

For example, FIG. 2 is a schematic diagram of an accumulation operation according to an embodiment of the present invention. As shown in FIG. 2 , the initial index values of the blocks of the first input data I1 , the second input data I2 and the third input data I3 are all 1 (before combining). When the block is repeatedly input, the processing unit 120 will perform an accumulation operation on the index value of the block, wherein the progressive index value of 2 in FIG. 2 means that the block has been repeatedly input twice, and the progressive index value is A 3 means that the block has been entered three times.

After obtaining the combination result, the processing unit 120 generates a prompt message according to the combination result, so as to inform the user of the direction to move the finger when extracting the next input data. According to an embodiment of the present invention, the prompt information will instruct the user to move his finger in the direction of the block with the lower progressive index value in the combination result. Since the block with a higher progressive index value indicates that the input frequency of the user's finger corresponding to the area of the block is relatively high, that is, the user is used to placing this area of his finger on the fingerprint sensor 110, so the fingerprint sensor 110 The number of extractions to this area will be more frequent. Therefore, the prompt information will instruct the user to move his finger in the direction of the block with a lower progressive index value in the combination result, that is, prompt the user to place the area of his finger with a relatively low input frequency on the fingerprint sensor 110, In order to increase the coverage of fingerprint registration data and the integrity of registration data.

When the next input data is to be extracted, the user will put his finger on the fingerprint sensor 110 of the electronic device 100 again, and move his finger according to the prompt information. Then, the fingerprint sensor 110 will scan the user's fingerprint again to extract a third input data, and the processing unit 120 will divide the third input data into a plurality of third blocks of the same size, and each third block Each block will have an initial index value, for example, 1. After obtaining the third input data, the processing unit 120 compares the combination result with the third input data to generate another combination result.

According to another embodiment of the present invention, the processing unit 120 judges whether to stop inputting fingerprint data according to a combination count. For example, after the processing unit 120 performs 10 combinations, the processing unit 120 will judge that the range covered by the registration data (ie, the last combination result) is sufficient, and then instruct the user that there is no need to continue inputting fingerprint data.

According to an embodiment of the present invention, the prompt information can be displayed by a display unit (not shown) of the electronic device 100 . According to an embodiment of the present invention, the prompt information may be a schematic diagram displayed on the display unit, through which the user may be notified of which blocks are input more frequently and which blocks are input less frequently. Therefore, the user can move the finger in the direction of the block with relatively low input frequency. According to an embodiment of the present invention, the schematic diagram can be a block diagram, a fingerprint outline diagram or other types of display diagrams. According to an embodiment of the present invention, areas with relatively high input frequencies in the schematic diagram may be displayed in relatively dark colors, and areas with relatively low input frequencies may be displayed in relatively light colors. In other words, the present invention can use the depth of the color to prompt the user to move the finger. When the incremental index value corresponding to a block is larger, its color is darker; conversely, the smaller the incremental index value, the lighter the color. Therefore, the user can determine which direction to move the finger, and the position and input area where the finger is placed on the fingerprint sensor 110 according to the depth of the color in the schematic diagram.

According to another embodiment of the present invention, the prompt information may be a text box displayed on the display unit. The processing unit 120 can directly prompt the user the direction to move the finger through the content prompted by the text box. The prompt information can be shown as an arrow icon displayed on the display unit, so as to prompt the user to move the finger.

According to an embodiment of the present invention, the prompt information can generate a voice message through a sound generating unit (not shown in the figure) of the electronic device 100 . The processing unit 120 can prompt the user to move the finger through the voice information played by the sound generating unit.

According to an embodiment of the present invention, the prompt information may include one or more direction information that the user needs to move. For example: taking FIG. 2 as an example, since the upper right corner and the lower left corner are areas with relatively low input frequency, the processing unit 120 will prompt the user to move the finger to the upper right and lower left simultaneously or sequentially.

FIG. 3 is a flowchart 300 of a method for generating fingerprint registration data according to an embodiment of the present invention. The method for generating fingerprint registration data is applicable to the electronic device 100 . As shown in FIG. 3, first, in step S310, a first input data is extracted by the electronic device 100, wherein the first input data is divided into a plurality of first blocks, and each of the first blocks has an initial index value. In step S320, a second input data is extracted by the electronic device 100, wherein the second input data is divided into a plurality of second blocks, and each second block has the aforementioned initial index value. In step S330, the electronic device 100 compares and combines the first input data and the second input data to generate a combined result, wherein the electronic device 100 will duplicate the first input data and the second input data The index values of the first block and the second block are accumulated. In step S340, after the combined result is obtained, the electronic device 100 determines whether the total area of the combined result is greater than a threshold. If the total area of the combined result is greater than a threshold, go to step S350. In step S350, a prompt message is generated by the electronic device 100 to indicate to stop extracting fingerprint data. If the total area of the combination result is not greater than a threshold value, go to step S360. In step S360, the electronic device 100 generates a prompt message according to the combination result, so as to prompt the user to place the direction and position of the finger. In step S370, the electronic device 100 extracts a third input data, wherein the third input data is divided into a plurality of third blocks, and each third block has an initial index value. In step S380, the processing unit 120 compares and combines the combination result with the third input data to generate another combination result. After the combination result is generated, it returns to step S340, and the electronic device 100 determines whether the total area of the combination result is greater than a threshold.

According to another embodiment of the present invention, the processing unit 120 may determine whether to stop extracting fingerprint data according to a combination number.

According to the method proposed by the embodiment of the present invention, when the user is creating registration data for fingerprint recognition, the user can follow the instruction of the prompt information and move his finger in the direction of the block with the lower progressive index value in the combination result Movement (that is, the area where the user's finger input frequency is relatively low) to increase the coverage of the registration data and the integrity of the registration data. In addition, according to the method proposed by the embodiment of the present invention, the user can more efficiently create registration data for fingerprint recognition, and avoid inputting too much repetitive fingerprint data.

The steps of the methods and algorithms disclosed in the description of the present invention can be directly applied to hardware and software modules or a combination of both by executing a processor. A software module (including execution instructions and associated data) and other data can be stored in data memory, such as random access memory (RAM), flash memory (flash memory), read only memory (ROM), erasable Programmable Read-Only Memory (EPROM), Electronically Erasable Programmable Read-Only Memory (EEPROM), scratchpad, hard disk, portable hard disk, compact disc read-only memory (CD-ROM), DVD or those learned in this field Any other computer-readable storage medium format within the technology. A storage medium may be coupled to a machine device, for example, such as a computer/processor (for the convenience of description, it is represented by a processor in this specification), and the above-mentioned processor can read information (such as a program code), and write information to storage media. A storage medium can integrate a processor. An application specific integrated circuit (ASIC) includes a processor and storage media. A user equipment includes an ASIC. In other words, the processor and the storage medium are included in the user equipment without being directly connected to the user equipment. Furthermore, in some embodiments, any suitable computer program product includes a readable storage medium that includes program code associated with one or more disclosed embodiments. In some embodiments, the product of the computer program may include packaging material.

"An embodiment" or "embodiment" mentioned in this specification means that the specific features, structures, or characteristics related to the embodiment are included in at least one embodiment of the present invention, but it does not mean that They are present in every embodiment. Therefore, appearances of the phrases "in one embodiment" or "in an embodiment" in different places in this specification do not necessarily refer to the same embodiment of the present invention.

The above paragraphs use various levels of description. Obviously, the teachings herein can be implemented in many ways, and any specific architecture or functionality disclosed in the examples is only a representative situation. Based on the teachings herein, anyone skilled in the art should understand that each aspect disclosed herein can be implemented independently or two or more aspects can be implemented in combination.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, this The scope of protection of the invention should be defined by the appended claims.

Claims (16)

1. A method for generating fingerprint registration data, comprising: extracting a first input data, wherein the first input data is divided into a plurality of first blocks, and each of the first blocks has an index value; extracting a second input data, wherein the second input data is divided into a plurality of second blocks, and each of the second blocks has an index value; comparing and combining the first input data and the second input data to generate a combined result; performing an accumulation operation on the index values of the first block and the second block that overlap each other in the first input data and the second input data; and Judging whether a total area of the combination result is greater than a critical value, so as to generate a prompt message; When the total area of the combination result is not greater than the threshold value, the prompt message instructs a user to move his finger in the direction of the block with a lower progressive index value in the combination result. 2. The method for producing fingerprint registration data as claimed in claim 1, further comprising: When the total area of the combined result is not greater than the critical value, a third input data is extracted, wherein the third input data is divided into a plurality of third blocks, and each of the third blocks has an index value. 3. The fingerprint registration data generating method as claimed in claim 2, further comprising: comparing and combining the combination result and the third input data to generate another combination result. 4. The method for producing fingerprint registration data as claimed in claim 1, further comprising: judging whether a total area of the combination result is greater than a critical value; and When the total area of the combined result is greater than the critical value, the prompt message prompts a user that there is no need to continue inputting fingerprint data. 5. The method for generating fingerprint registration data as claimed in claim 1, further comprising: Whether to stop inputting fingerprint data is judged according to a combination times. 6. The method for generating fingerprint registration data as claimed in claim 1, wherein the prompt information is generated by a display unit, and the prompt information includes one or more direction information. 7. The method for generating fingerprint registration data according to claim 1, wherein the prompt information is generated by a sound generating unit. 8. The method for generating fingerprint registration data as claimed in claim 1, wherein the above-mentioned prompt information uses the depth of color to prompt a user to move the finger. 9. An electronic device comprising: A fingerprint sensor for extracting a first input data, wherein the first input data is divided into a plurality of first blocks, and each of the first blocks has an index value, and extracting a second input data, wherein The above-mentioned second input data is divided into a plurality of second blocks, and each of the above-mentioned second blocks has the above-mentioned index value; and A processing unit, used to compare and combine the first input data and the second input data to generate a combination result, and generate a prompt message according to the combination result, wherein when the combination result is generated, the processing unit In the input data and the second input data, the above-mentioned index values of the above-mentioned first block and the second block are repeated to perform an accumulation operation, Wherein the above-mentioned processing unit judges whether a total area of the above-mentioned combination result is greater than a critical value, wherein when the above-mentioned total area of the above-mentioned combination result is not yet greater than the above-mentioned critical value, the above-mentioned prompt information instructs a user to put his finger into the above-mentioned combination result. The direction in which blocks with lower progressive index values are moved. 10. The electronic device as claimed in claim 9, wherein when the total area of the combination result is not greater than the threshold value, a third input data is extracted, wherein the third input data is divided into a plurality of third blocks, and Each of the above-mentioned third blocks has an index value. 11. The electronic device as claimed in claim 10, wherein the processing unit compares and combines the combination result and the third input data to generate another combination result. 12. The electronic device according to claim 9, wherein the processing unit judges whether a total area of the combination result is greater than a threshold value, wherein when the total area of the combination result is greater than the threshold value, the prompt message prompts A user does not need to continue to input. 13. The electronic device as claimed in claim 9, wherein the processing unit determines whether to stop inputting fingerprint data according to a combination number. 14. The electronic device of claim 9, further comprising: A display unit is used to generate the above prompt information, and the above prompt information includes one or more direction information. 15. The electronic device of claim 9, further comprising: A sound generating unit is used to generate the above prompt information. 16 . The electronic device as claimed in claim 9 , wherein the prompt information uses color shades to prompt a user's finger moving direction.