TWI714012B - System and method of three-dimensional anti-counterfeiting two-dimensional barcode - Google Patents

Abstract

The present invention discloses a system and method of three-dimensional anti-counterfeiting two-dimensional barcode, wherein hidden codes are incorporated into the coding of a 2D barcode, so that specific code blocks in the 2D barcode have higher height and/or lower depth compared to other code blocks. A 2D barcode which may have 3D anti-counterfeiting technique is detected by a 3D depth-sensing camera of a computing device to analyze whether specific code blocks are in this 2D barcode and whether the coding of the specific code blocks are correct, so that a certified-product or -service supplier can determine that the products or services is true or fake.

Description

Three-dimensional anti-counterfeiting two-dimensional bar code system and method

The present invention relates to a bar code system and a method thereof, in particular to a three-dimensional anti-counterfeiting two-dimensional bar code system and a method thereof.

Since ancient times, there have been many genuine products and services in human life, as well as many counterfeit and counterfeit products (counterfeit products) and services, such as counterfeit banknotes, counterfeit medicines, counterfeit trademarks, counterfeit boutiques, fake paintings, and counterfeit websites. The content, etc., all harm the rights and interests of those who really own or provide these genuine products and services.

In the case of counterfeit or counterfeit products and services, the right holder will try to improve the quality of its genuine products and services, or add anti-counterfeiting technology, so that the counterfeiter or counterfeiter cannot have the technology, and the counterfeit or counterfeit The goods and services of China cannot occupy the consumer market.

For example, governments of various countries have added anti-counterfeiting metal threads, watermarks, and optically color-changing inks to their banknote manufacturing processes, and taught the people to identify real and counterfeit banknotes to prevent counterfeit banknotes from flowing into the consumer market and disrupting the country’s economic activities.

In another example, hackers create fake website content with URLs that are similar to real websites and present content with fake and real content, so as to defraud unsuspecting consumers of personal assets or money. In another example, the imitation painting makers used similar painting styles and photos Make a plate stamp to create fakes that look similar to the original.

In another example, laser stickers are affixed to the outer boxes of some medicines, and the circulation of the laser stickers is strictly controlled, so that consumers can distinguish the genuine drugs made by the original factory or the fake ones made by counterfeiters from the laser stickers on the outer boxes. medicine.

In another example, a manufacturer of high-quality leather goods selects leather with texture, deep texture, distinct patterns, and hardware accessories with special colors and touches, and uses a variety of complicated and sophisticated lathes to sew high-quality leather goods. The serial number indicating the manufacturing plant and year of manufacture is printed on the piece, so that the counterfeit leather piece cannot reach the level of its craftsmanship and is detected.

However, counterfeiters or hackers may still try their best to counterfeit goods and services, and even the counterfeit goods and services have reached the point where the original manufacturer or consumer cannot identify the authenticity by appearance. For example, the laser sticker on the outer box of the suspected counterfeit medicine is indistinguishable from the original manufacturer's laser sticker on the genuine medicine. Further testing of the suspected counterfeit medicine is required to identify its authenticity. In another example, the counterfeiter adds DNA to the color-changing ink, which is indistinguishable from the color shown in the original manufacturer’s DNA anti-counterfeiting color-changing ink; the original manufacturer or inspection unit needs to further compare the DNA in the counterfeit with the original anti-counterfeiting ink. The DNA of the color-changing ink can be verified by sequence comparison.

Therefore, when there are still no effective methods and technologies on the market to prevent counterfeiting and counterfeiting, there is an urgent need for novel and creative technologies to improve the anti-counterfeiting threshold.

In view of the shortcomings of the prior art, the applicant of this case, after careful experimentation and research, and with a spirit of perseverance, finally conceived this case, which can overcome the shortcomings of the previous technology. The following is a brief description of the case.

In order to improve the anti-counterfeiting effect of genuine goods or services, the present invention uses The hidden code is added to the encoding of the two-dimensional bar code, so that the two-dimensional bar code on the carrier (such as the packaging box) used for the product or service has a specific bar code block that cannot be sensed by human vision and touch. The specific bar code block is compared Other barcode blocks have a higher thickness and/or a deeper depth, and become a two-dimensional barcode with three-dimensional anti-counterfeiting. Without knowing it, ordinary users can only read the information indicated by the two-dimensional bar code on the authentic packaging box or the suspected authentic packaging box through the computing device equipped with a general lens. However, right holders who provide products or services can use a computing device equipped with a depth lens to read genuine two-dimensional barcodes and the two-dimensional barcodes on the suspected genuine packaging boxes, by analyzing whether there are specific barcode blocks and whether they indicate Correct hidden code, and quickly identify genuine or counterfeit goods (or services). Since the characteristics of the specific barcode block are not obvious, and the two-dimensional barcode has hundreds to tens of thousands of black and white pixels (barcode blocks), it is difficult for counterfeiters to accurately know the meaning of the hidden code and the corresponding specific barcode block. Location, it is impossible to accurately transform a two-dimensional barcode with a three-dimensional anti-counterfeiting mechanism, let alone disguise the packaging box to achieve the purpose of forging genuine products or services.

The present invention discloses a two-dimensional bar code system and method for establishing a three-dimensional anti-counterfeiting mechanism of a two-dimensional bar code, wherein the two-dimensional bar code indicates at least one piece of information, and the two-dimensional bar code system includes an encoding module, a hidden code establishing module and a distribution module. The operation of the two-dimensional barcode system and method of the present invention is as follows. The encoding module encodes at least one piece of information into a first data code, and divides the first data code into M barcode blocks on the two-dimensional barcode. The hidden code creation module selects N barcode blocks from the M barcode blocks, generates a hidden code for each of the N barcode blocks, and adds the hidden code after the first data code to form a second data code. Where N is a positive integer less than M, and when M barcode blocks are formed on the carrier by concealing the code, N barcode blocks in M barcode blocks have Higher thickness and/or deeper depth. distribution The module distributes the second data code among the M barcode blocks on the two-dimensional barcode to form the pattern of the two-dimensional barcode on the carrier.

In a specific embodiment, the two-dimensional barcode system further includes an error correction module coupled to the hidden code creation module. The error correction module generates a complex error correction codeword according to the preset coding level and the number of hidden codes, and adds the complex error correction codeword after the second data code to form a third data code. The distribution module distributes the third data code among the M barcode blocks on the two-dimensional barcode to form a pattern of the two-dimensional barcode on the carrier.

In a specific embodiment, the two-dimensional bar code includes at least two positioning detection patterns, and the hidden code creation module is further used to generate a positioning detection hidden code for one of the at least two positioning detection patterns, and to perform positioning detection. The hidden code is added after the complex error correction code word of the third data code to form the fourth data code, and the positioning detection hidden code indicates that the positioning detection pattern when the two-dimensional barcode is formed on the carrier is compared with the MN barcode blocks. Higher thickness and/or deeper depth.

In a specific embodiment, the higher thickness and the deeper depth are in the order of micrometers, and the carrier is an entity that can be contacted by the user's skin. In a specific embodiment, the thickness of each of the N barcode blocks and positioning detection patterns is the same, partially the same, or different. In a specific embodiment, the two-dimensional barcode is captured by a depth lens on the computing device, and the processor of the computing device decodes the captured image of the two-dimensional barcode into at least one piece of information indicated by the two-dimensional barcode and each hidden Code to verify the three-dimensional anti-counterfeiting mechanism.

In a specific embodiment, the two-dimensional barcode system further includes an error correction module coupled to the encoding module, wherein the error correction module generates a complex error correction codeword according to a preset encoding level and the number of M barcode blocks , The error correction module adds the complex error correction code to the first data encoding before the hidden code is added to the first data encoding to form The fifth data code, and the fifth data code and the concealment code together form the sixth data code. The distribution module replaces the second data code with the sixth data code and distributes it among the M barcode blocks on the two-dimensional bar code. A two-dimensional bar code pattern is formed on the carrier.

In a specific embodiment, the error correction module further adds another error correction code word after the sixth data code to form the seventh data code.

In a specific embodiment, the carrier has an image, and the two-dimensional barcode is formed on the image in a watermark manner.

The present invention discloses a method for establishing a three-dimensional anti-counterfeiting mechanism of a two-dimensional bar code, wherein the two-dimensional bar code indicates at least one piece of information. The method includes: providing a data code encoding from at least one piece of information; adding a complex hidden code to the data code to form anti-counterfeiting data Encoding; assigning the anti-counterfeiting data code to the plural barcode blocks on the two-dimensional barcode; and forming the pattern of the two-dimensional barcode on the carrier based on the plural barcode blocks, wherein the plural barcode blocks are used to hide the plural codes to make the plural barcodes A specific barcode block in the block has a higher thickness and/or a deeper depth than other barcode blocks.

In a specific embodiment, the method further includes: providing a complex error correction codeword; and adding the complex error correction codeword together with the complex hidden code to the data encoding.

In a specific embodiment, the method further includes: providing a complex error correction codeword; and adding the complex error correction codeword to the anti-counterfeiting data code.

In a specific embodiment, the two-dimensional barcode includes at least two positioning detection patterns. The method further includes: adding the positioning detection hidden code to the anti-counterfeiting data code, and the positioning detection hidden code indicates that when the two-dimensional barcode is formed on the carrier, at least One of the two positioning detection patterns has a higher thickness and/or a deeper depth than other barcode blocks.

The term "barcode" used in this article includes a single direction (e.g. horizontal direction) One-dimensional barcodes that express information, two-dimensional barcodes that expand the readability of another dimension on the basis of one-dimensional barcodes, and composite barcodes that combine one-dimensional barcodes and two-dimensional barcodes.

The term “one-dimensional barcode” used in this article includes but is not limited to Code 39 barcode, interleaved 25 barcode (ITF barcode), EAN-13 barcode, EAN-8 barcode, ISBN book code, ISSN journal code, Code 128 barcode, Codabar barcode, UPC Bar code, Code 93 bar code, Code 11 bar code, MSI bar code, Plessey bar code, Toshiba code bar code, Code 32 bar code, RSS bar code and the like.

The term "two-dimensional barcode" used in this article includes, but is not limited to, linear stacked two-dimensional barcode, matrix two-dimensional barcode and postal two-dimensional barcode. Among them, the linear stacked two-dimensional barcode is a two-dimensional barcode generated by stacking multiple one-dimensional barcodes vertically on the basis of the principle of one-dimensional barcode encoding, including but not limited to Code 16K barcode, Code 49 barcode, PDF417 barcode and And so on. Matrix two-dimensional barcode is encoded in a rectangular space by the different distribution of black and white pixels in the matrix, which includes but not limited to Aztec barcode, Maxi code barcode, and Quick response code (QR code) , Data matrix barcodes, Vericode barcodes, Ultracode barcodes, Han Xin codes, color barcodes and the like; two-dimensional postal codes are encoded by black bars of different lengths and are mainly used for mail encoding, including but not limited to the United States The POSTNET barcode developed by the Post Office (USPS), the BPO 4-State barcode developed by the British Post Office and the like.

An example of the "carrier" in this article is a product made of paper products, plastic products, metal products or a combination of materials, as long as it has a two-dimensional bar code to be displayed on it and presents a specific depth or thickness in a specific bar code block position OK. Ways to present a three-dimensional anti-counterfeiting two-dimensional barcode on a carrier include but are not limited to printing or three-dimensional (3D) printing. Because the pattern of the two-dimensional bar code cannot be displayed on the monitor screen Depth or thickness, so the "carrier" in this article will exclude the applicability of the display and its screen.

"Depth lens" or "depth camera" in this article refers to a device that uses time of flight (ToF), structured light, and binocular vision technologies to capture the motion or three-dimensional depth of a target. For example, Microsoft’s Kinect sensor device; Apple’s smart phone iPhone X equipped with true depth photography system (also known as Face ID technology) device, which integrates microphone, speaker, front lens, ambient light sensor , Proximity sensor (proximity sensor), infrared lens, flood illuminator (flood illuminator) and dot projector.

1, 40‧‧‧Quick response barcode (two-dimensional barcode)

2. 43‧‧‧Position detection pattern

3. 22a, 42‧‧‧Barcode block

4‧‧‧Correction pattern

10‧‧‧Two-dimensional barcode system

11‧‧‧Coding Module

12‧‧‧Error correction module

13‧‧‧Hidden code creation module

14‧‧‧Distribution module

20‧‧‧At least one piece of information

21‧‧‧First data encoding

23‧‧‧Secret code

24‧‧‧Second data encoding

25, 29‧‧‧Error correction codeword

26‧‧‧Third data encoding

27‧‧‧Fifth data encoding

28‧‧‧Sixth data encoding

30‧‧‧Seventh data encoding

31‧‧‧Location detection hidden code

32‧‧‧Fourth data encoding

41‧‧‧Carrier

44‧‧‧Image

The above objects and advantages of the present invention will become more immediately apparent to those with ordinary knowledge in the technical field after referring to the following detailed description and accompanying drawings.

Figure 1 is a schematic diagram of a conventional quick response barcode.

Figure 2 is a schematic diagram of a two-dimensional barcode system according to an embodiment of the present invention.

FIG. 3 is a schematic diagram of data encoding of a two-dimensional bar code including data encoding of information and hidden codes according to an embodiment of the present invention.

Figure 4 is a schematic diagram of data encoding including error correction codewords according to an embodiment of the present invention.

Figure 5 is a schematic diagram of data encoding of a two-dimensional bar code including error correction codewords and concealment codes according to another embodiment of the present invention.

Figure 6 is a schematic diagram of data encoding with double error correction codewords.

Figure 7 is a schematic diagram of a three-dimensional anti-counterfeiting two-dimensional barcode according to an embodiment of the present invention.

Figure 8 is the stand of the three-dimensional anti-counterfeiting two-dimensional barcode according to the embodiment of the present invention Body diagram.

Figure 9 is a side view of the A-A' section of the two-dimensional barcode in Figure 7.

Figure 10 is a schematic diagram of data encoding including location detection concealment codes according to an embodiment of the present invention.

FIG. 11 is a schematic diagram of a positioning detection pattern with a higher thickness in a two-dimensional barcode according to an embodiment of the present invention.

Figure 12 is a schematic diagram of an invisible two-dimensional barcode according to an embodiment of the present invention.

The invention proposed in this case will be fully understood by the following examples, so that those with ordinary knowledge in the relevant technical field can complete it. However, the implementation of this case is not limited by the following examples. Those with ordinary knowledge in the field can still deduce other embodiments based on the spirit of the disclosed embodiments, and these embodiments should fall within the scope of the present invention.

In the present invention, the concealed code is added to the encoding of the two-dimensional bar code, and in the process of generating the two-dimensional bar code pattern on the carrier, the specific bar code block has a higher thickness and/or more than other bar code blocks. Deep depth to realize the three-dimensional anti-counterfeiting mechanism of the two-dimensional barcode.

The two-dimensional barcode disclosed in the present invention includes, but is not limited to, a linearly stacked two-dimensional barcode formed by stacking a plurality of one-dimensional barcodes longitudinally, and a matrix two-dimensional barcode encoded by the distribution of black and white image elements in a rectangular space Barcode. Common and widely used matrix 2D barcodes include but are not limited to quick response barcodes. The quick response bar code usually uses a pattern composed of black and white image elements to indicate the information it carries, but the quick response bar code composed of color image elements also falls within the scope of the present invention. Therefore, the following embodiments only take the quick response barcode composed of black and white primitives as implementation For example, those with ordinary knowledge in the technical field understand that other two-dimensional barcodes are also applicable to the embodiments of the present invention.

The invention discloses a method and system for establishing a three-dimensional anti-counterfeiting mechanism of a two-dimensional bar code. The two-dimensional bar code indicates at least one piece of information. The method includes: adding a complex hidden code to a data code encoded from at least one piece of information to form an anti-counterfeiting data code, and distributing the anti-counterfeiting data code to a plurality of barcode blocks on the two-dimensional barcode. Then, based on a plurality of barcode blocks, a two-dimensional barcode pattern is formed on the carrier, wherein the plurality of barcode blocks uses a plurality of hidden codes to make a specific barcode block in the plurality of barcode blocks have a higher value than other barcode blocks. High thickness and/or deep depth.

The method in the foregoing embodiment further includes adding a complex error correction code word together with the complex concealment code to the data encoding, or adding a complex error correction code word to the anti-counterfeiting data encoding.

In the above embodiment, the two-dimensional barcode further includes at least two positioning detection patterns, the positioning detection hidden code is added to the anti-counterfeiting data code, and the positioning detection hidden code indicates that when the two-dimensional barcode is formed on the carrier, at least two positioning detection A positioning detection pattern in the pattern has a higher thickness and/or a deeper depth than other barcode blocks.

Please refer to Figure 1, which is a schematic diagram of the conventional quick response barcode. In Figure 1, the quick response barcode 1 with a square pattern has three positioning detection patterns 2 in its three right-angled areas, which are used to mark the size of the quick response barcode 1. The general lens on the computing device Or the depth lens captures the quick response bar code 1 in its field of view, the processor on the computing device judges the directionality of the quick response bar code 1, and decodes the fast response bar code 1 by reading the black and white pixels of the quick response bar code 1 Information indicated. A barcode block 3 with format information and version information is arranged around the positioning detection pattern 2, and the quick response barcode 1 also has a calibration pattern 4 for correcting the coordinate system. There are at least 40 versions of the standard for quick response to barcodes, including: a version with 441 (21×21) matrices (barcode blocks), a version with 625 (25×25) matrices, and a version with ((V-1) ×4+21) ^{2 is} the number of matrices in each version, and V is the number of versions. Therefore version 40 has 31329 (177×177) matrices. At present, quick response barcodes with less than 441 matrices or more than 31329 matrices have been widely used in various goods and services.

Please refer to FIG. 2 and FIG. 3 together, which are respectively a schematic diagram of a two-dimensional barcode system according to an embodiment of the present invention, and a schematic diagram of data encoding of a two-dimensional barcode containing information data encoding and hidden codes. In Figures 2 and 3, the encoding module 11 in the two-dimensional barcode system 10 encodes at least one piece of information 20 (for example, information composed of English A~J and numbers 0~9: A0B1C2D3E4F5G6H7I8J9) as the first data code 21. The first data code 21 is finally presented on the carrier in the form of a two-dimensional barcode. The encoding module 11 divides the first data encoding 21 into M barcode blocks 22a on the two-dimensional barcode. In addition, the two-dimensional barcode system 10 can be widely installed in processors or other computing devices.

Next, the hidden code creation module 13 selects N barcode blocks 42 from the M barcode blocks 22a (see Figure 11), and generates a hidden code 23 for each of the N barcode blocks 42, and The hidden code 23 is added after the first data code 21 to form the second data code 24. N is a positive integer less than M, and when M barcode blocks 22a are formed on the carrier by concealing the code 23, the N barcode blocks 42 are compared with other barcode blocks (MN barcode blocks). ) Has a higher thickness and/or a deeper depth.

The hidden code creation module 13 coupled to the encoding module 11 determines the first command or the second command for the hidden code 23. The first command and the second command respectively indicate that the hidden code 23 will finally specify a barcode block when the two-dimensional barcode is formed. For higher thickness and deeper depth. When the hidden code 23 indicating that the N barcode blocks carry the first instruction is added to the back of the first data code 21, the N barcode blocks in the formed two-dimensional barcode pattern all have a relatively high thickness. When the hidden code 23 indicating the N barcode blocks with the second instruction is added after the first data code 21, the N barcode blocks in the formed two-dimensional barcode pattern all have a relatively deep thickness. When it indicates that p specific barcode blocks of N barcode blocks have the hidden code 23 of the first instruction and that q specific barcode blocks of N barcode blocks have the hidden code 23 of the second instruction are added After the first data code 21, the p specific bar code blocks in the formed two-dimensional bar code pattern have a higher height, and the q specific bar code blocks in the two-dimensional bar code pattern have a deeper thickness, each of p and q The sum of the numbers is N.

After that, the distribution module 14 coupled to the hidden code creation module 13 distributes the second data code 24 to the M barcode blocks on the two-dimensional barcode, so as to form the pattern of the two-dimensional barcode on the carrier. As shown in Figure 7, taking a quick response barcode 40 (also called a two-dimensional barcode 40) with 441 barcode blocks (black and white primitives) as an example, the hidden code creation module 13 is one of 16 barcodes Block 42 (the graphic element represented by diagonal lines) is added with hidden code in the encoding stage to form the pattern of the two-dimensional barcode 40 on the carrier 41. These 16 barcode blocks 42 are higher than other barcode blocks. Thickness and/or lower depth. The aforementioned graphic elements represented by diagonal lines may themselves be black graphic elements or white graphic elements.

Then, the user operates a computer or similar device to execute the output of the two-dimensional bar code (using the quick response bar code as an example), and print it on the carrier (such as paper) through printing equipment, laser equipment, etching equipment, 3D printer or similar equipment. , Plastic plane, metal plane or a combination of their materials) form a two-dimensional bar code.

Furthermore, in order to prevent the two-dimensional bar code with hidden code from being damaged or worn by physical friction, sun or moisture or other factors, the hidden code in the two-dimensional bar code cannot be recognized, so the present invention will correct Add the wrong code word to the data code Code in. When part of the concealment code is damaged or worn, the error correction code can still assist the lens to capture the concealment code, which is read and decoded by the arithmetic device. The error correction code is also damaged or damaged in part of the barcode block of the two-dimensional barcode itself. It can still assist the computing device to read and decode the information of the 2D barcode itself when worn.

As shown in Figures 2 and 4, the error correction module 12 coupled to the encoding module 11 and/or the hidden code creation module 13 generates a complex error correction code word 25 according to the preset encoding level and the number of hidden codes 23 , And add the complex error correction code word 25 after the second data code 24 to form the third data code 26. The distribution module then distributes the third data code 26 to the M barcode blocks 22a on the two-dimensional barcode 40, so that a pattern of the two-dimensional barcode 40 is formed on the carrier 41. In Figure 4, the error correction code word 25 follows the concealment code 23, that is, the third data code 26 is data with the schematic structure of "first data code 21-concealment code 23-error correction code word 25" coding.

When a quick response barcode is used as an example of a two-dimensional barcode, according to the version description of the aforementioned quick response barcode, M is a positive integer equal to or greater than 441. The error correction module can set the error correction level (coding level) for the two-dimensional bar code. The error correction levels L, M, Q and H have about 7%, about 15%, about 25% and about 30% error correction capabilities, respectively. The final two-dimensional bar code formed on the carrier is soiled and damaged, and the data can still be recovered automatically after the two-dimensional bar code is captured. The aforementioned error correction levels are not limited to L, M, Q, and H, and other error correction levels are also applicable to the present invention.

Please refer to FIG. 5, which is a schematic diagram of data encoding of a two-dimensional barcode including error correction codewords and concealment codes according to another embodiment of the present invention. In Figure 5, the error correction module 12 generates an error correction code word 25 according to the preset coding level and the number of M barcode blocks 22a, and then adds the error correction code word 25 after the first data code 21 to form a Five data code 27. This error correction code word 25 can be affected by part of the barcode block of the two-dimensional barcode itself. It can still assist the computing device to read and decode at least one piece of information 20 of the two-dimensional barcode itself when it is damaged. After that, the hidden code creation module 13 adds the hidden code 23 to the fifth data code 27 for the N barcode blocks 42 of the first data code 21 to form a sixth data code 28. The distribution module 14 replaces the original second data code 24 or the third data code 26 with the sixth data code 28 and distributes it among the M barcode blocks on the two-dimensional barcode 40, so that a two-dimensional barcode is formed on the carrier 41 The pattern of 40.

Furthermore, the error correction module 12 can add error correction codewords to both the first data encoding 21 and the hidden code 23, so that the computing device can still smoothly read and decode the damaged part of the barcode block and the damaged 2D barcode. Hidden code. As shown in Figure 6, the error correction module 12 adds another error correction code word 29 after the concealment code 23 of the sixth data code 28 according to the preset coding level and the number of concealment codes 23 to form the seventh data. Encoding 30, this seventh data encoding 30 has a double error correction codeword, wherein the error correction codeword 25 is set for error correction during the reading and decoding of the first data encoding, and the error correction codeword 29 is for the hidden code Set the error correction during reading and decoding.

In the present invention, a hidden code is added to the data encoding, so that when the pattern of the two-dimensional barcode 40 is formed on the carrier 41, the 16 barcode blocks 42 (graphic elements represented by diagonal lines) are protruding blocks compared to other black barcode blocks (See Figures 7 and 8). This protruding block can be captured by the operator with a computing device equipped with a depth lens or a depth camera to decode the information A0B1C2D3E4F5G6H7I8J9 indicated by the quick response bar code, and analyze whether it has a hidden code and whether the hidden code is a correct hidden code.

The 16 barcode blocks 42 of the two-dimensional barcode 40 in FIG. 8 can also be presented in a mixed manner of higher thickness and lower depth. Please refer to Figure 9, which is a side view of the A-A' section of the two-dimensional barcode in Figure 7. In Figure 9, for the convenience of description and observation, the black and white primitives (barcode blocks) of the A-A' section of the two-dimensional barcode 40 are drawn as having a certain And the same height, but the specific barcode block 42 with higher thickness or lower depth is drawn in a manner higher than black and white primitives or lower than black and white primitives. In Figure 9, the higher thickness and the deeper depth are in the micron level, for example, any value between 1 and 10 microns, which refers to a size higher or deeper than the general black and white pixels. When the pattern of a two-dimensional barcode is presented on a metal or plastic product, a specific barcode block with a deeper depth can penetrate into the metal or plastic product to form an etching-like effect; a specific barcode with a higher thickness can be three-dimensional The printing method increases the material of the specific barcode block position, so that the specific barcode block has a higher thickness.

Figure 10 is a schematic diagram of data encoding including location detection concealment codes according to an embodiment of the present invention. In Figure 10, the hidden code creation module 13 can also generate the position detection hidden code 31 for the position detection pattern, and determine the first or second command for the position detection hidden code 31, and set the position detection hidden code 31 The third data code 26 is added to form the fourth data code 32, so that the positioning detection pattern is finally formed into a two-dimensional barcode with a higher thickness or a deeper depth than a normal barcode block. As shown in FIG. 11, the positioning detection pattern 43 of the two-dimensional barcode 40 and the 16 barcode blocks 42 have a higher thickness than a general barcode block.

Please refer to Fig. 12, which is a schematic diagram of an invisible two-dimensional barcode according to an embodiment of the present invention. In Figure 12, the two-dimensional barcode 40 with a three-dimensional anti-counterfeiting mechanism of the present invention is formed on an image 44 on a carrier (such as a paper product) in a manner similar to a watermark. The operator can also operate a depth lens or a depth camera to capture Two-dimensional bar code 40, and decode the information indicated by the two-dimensional bar code 40, analyze whether there is a hidden code and whether the hidden code is a correct hidden code.

The technology of the present invention has at least the following advantages: (1) Effective anti-counterfeiting effect of the product or its packaging container, (2) Three-dimensional printing or etching technology can achieve three-dimensional Anti-counterfeiting mechanism, (3) effectively distinguish the information contained in the two-dimensional barcode into general information and hidden information, (4) hidden information so that the authentic product or service provider can quickly distinguish the product or service through the in-depth lens reading (5) The general information in the two-dimensional barcode can still be retrieved by consumers, (6) the two-dimensional barcode containing the three-dimensional anti-counterfeiting mechanism of the present invention can retain the visual integrity of the pattern on the carrier, (7) the two-dimensional The three-dimensional anti-counterfeiting mechanism of the barcode is not obvious, which makes it difficult for counterfeiters to ignore the three-dimensional anti-counterfeiting mechanism, and (8) double error correction for data encoding and hidden codes.

The present invention is really a difficult innovation and has deep industrial value. In addition, the present invention can be modified by persons with ordinary knowledge in the technical field, but does not deviate from the scope of protection as claimed in the attached patent scope.

40‧‧‧Quick response barcode (two-dimensional barcode)

41‧‧‧Carrier

42‧‧‧Barcode block

Claims (15)

A two-dimensional barcode system for establishing a three-dimensional anti-counterfeiting mechanism of a two-dimensional barcode (40), wherein the two-dimensional barcode (40) indicates at least one piece of information (20), and the two-dimensional barcode system includes: an encoding module (11) , For encoding the at least one information (20) into a first data code (21), and dividing the first data code (21) into M barcode blocks (22a) on the two-dimensional barcode (40) ); a hidden code creation module (13) for selecting N barcode blocks (42) from the M barcode blocks (22a), and generating a hidden code block (42) for each of the N barcode blocks (42) Code (23), and add the hidden code (23) after the first data code (21) to form a second data code (24), where N is a positive integer less than M, and the M barcode areas When the block (22a) uses the hidden code (23) to form the two-dimensional barcode (40) on a carrier (41), the N barcode blocks (42) of the M barcode blocks (22a) Compared with MN barcode blocks, it has at least one of a higher thickness and a deeper depth; and a distribution module (14) for distributing the second data code (24) to the two-dimensional Among the M barcode blocks (22a) on the barcode (40), the pattern of the two-dimensional barcode (40) is formed on the carrier (41), wherein the two-dimensional barcode (40) is set on a computing device A depth lens capture of the arithmetic device, a processor of the arithmetic device decodes an image of the captured two-dimensional barcode (40) into the at least one information (20) indicated by the two-dimensional barcode (40) and each The hidden code (23) is used to verify the three-dimensional anti-counterfeiting mechanism. For example, the two-dimensional barcode system described in item 1 of the scope of patent application further includes an error correction module (12) coupled to the hidden code creation module (13), wherein the error correction module (12) is based on a The preset coding level and the number of hidden codes (23) generate complex error correction codewords (25), and add the complex error correction code word (25) after the second data code (24) to form a third data code (26), and the distribution module (14) encodes the third data (26) Allocate among the M barcode blocks (22a) on the two-dimensional barcode (40) to form the pattern of the two-dimensional barcode (40) on the carrier (41). For example, the two-dimensional barcode system according to the second item of the scope of patent application, wherein the two-dimensional barcode (40) includes at least two positioning detection patterns (43), and the hidden code creation module (13) is further used for positioning the at least two A positioning detection pattern (43) in the detection pattern (43) generates a positioning detection hidden code (31), and the positioning detection hidden code (31) is added to the plural of the third data code (26) The error correction code word (25) is followed to form a fourth data code (32), and the location detection concealment code (31) indicates that the location detection is performed when the two-dimensional barcode (40) is formed on the carrier (41) Compared with the MN barcode blocks, the pattern (43) has at least one of the higher thickness and the deeper depth. The two-dimensional bar code system according to any one of items 1 to 3 in the scope of the patent application, wherein the higher thickness and the deeper depth are in the order of micrometers, and the carrier can be contacted by the skin of a user An entity. For example, the two-dimensional barcode system described in any one of items 1 to 3 of the scope of patent application, wherein the thickness of each of the N barcode blocks (42) and the positioning detection pattern (43) is the same, partly the same or the same different. For example, the two-dimensional barcode system described in item 1 of the scope of patent application further includes an error correction module (12) coupled to the encoding module (11), wherein the error correction module (12) is based on a preset The coding level and the number of the M barcode blocks (22a) generate a complex error correction code word (25), and the error correction module (12) adds the hidden code (23) after the first data code (21) Previously, the complex error correction code word (25) was added after the first data code (21) to form a fifth data code (27), and the fifth data code (27) and the hidden code (23) Together to form a sixth data code (28), the distribution module (14) replaces the second data code (24) with the sixth data code (28) and distributes it on the two-dimensional barcode (40) In the M barcode blocks in order to form the pattern of the two-dimensional barcode (40) on the carrier (41). For example, the two-dimensional barcode system described in item 6 of the scope of patent application, wherein the error correction module (12) further generates another error correction codeword (29) according to the preset encoding level and the number of the hidden code (23) ), and the other error correction code word (29) is added after the sixth data code (28) to form a seventh data code (30). A method for establishing a three-dimensional anti-counterfeiting mechanism of a two-dimensional bar code (40) is characterized in that the two-dimensional bar code (40) indicates at least one piece of information (20), and the two-dimensional bar code (40) is determined by a computer on a computing device A depth lens capture, a processor of the computing device decodes an image of the captured two-dimensional barcode (40) into the at least one information (20) indicated by the two-dimensional barcode (40) and each A hidden code (23) to verify the three-dimensional anti-counterfeiting mechanism, the method comprising: (a) encoding the at least one piece of information (20) into a first data code (21); (b) encoding the first data (21) ) Is divided into M barcode blocks on the two-dimensional barcode (40); (c) N barcode blocks (42) are selected from the M barcode blocks (22a), and each of the N barcode blocks The block (42) generates a hidden code (23), and adds the hidden code (23) to the first data code (21) to form a second data code (24), where N is a positive integer less than M, And when the M barcode blocks (22a) use the hidden code (23) to form the two-dimensional barcode (40) on a carrier (41), the N of the M barcode blocks (22a) The barcode block (42) has at least one of a higher thickness and a deeper depth than MN barcode blocks; and (d) Allocate the second data code (24) to the M barcode blocks (22a) on the two-dimensional barcode (40), so as to form the two-dimensional barcode (40) on the carrier (41) ) Of the pattern. The method according to item 8 of the scope of patent application, wherein step (c) further includes: (c1) generating a complex error correction codeword (25) according to a preset coding level and the number of the hidden code (23); and (c2) The complex error correction codeword (25) is added to the second data code (24) to form a third data code (26), and step (d) further includes: (d1) using the third data code The data code (26) replaces the second data code (24), and the third data code (26) is allocated to the M barcode blocks (22a) on the two-dimensional barcode (40), so as to A pattern of the two-dimensional barcode (40) is formed on the carrier (41). As the method described in item 8 of the scope of patent application, wherein step (c) further includes: (c1) generating a complex error correction codeword (25) according to a preset coding level and the number of the M barcode blocks (22a) ); (c2) add the complex error correction code word (25) after the first data code (21) to form a fifth data code (27); (c3) add the hidden code (23) to the first data code (27); Five data codes (27) to form a sixth data code (28); and (c4) the sixth data code (28) replaces the second data code (24) and is assigned to the two-dimensional barcode (40) In the M barcode blocks above, the pattern of the two-dimensional barcode (40) is formed on the carrier (41). The method described in item 8 of the scope of patent application, wherein the carrier (41) has an image (44), and the two-dimensional barcode (40) is formed on the image (44) in the form of a watermark on. A method for establishing a three-dimensional anti-counterfeiting mechanism of a two-dimensional bar code (40) is characterized in that the two-dimensional bar code (40) indicates at least one piece of information (20), and the two-dimensional bar code (40) is determined by a computer on a computing device A depth lens capture, a processor of the computing device decodes an image of the captured two-dimensional barcode (40) into the at least one information (20) indicated by the two-dimensional barcode (40) and each A hidden code (23) to verify the three-dimensional anti-counterfeiting mechanism. The method includes: providing a data code (21) encoding from the at least one information (20); adding a complex hidden code (23) to the data code (21), To form an anti-counterfeiting data code (24); assign the anti-counterfeiting data code (24) to a plurality of barcode blocks (22a) on the two-dimensional barcode (40); and based on the plurality of barcode blocks (22a), A pattern of the two-dimensional barcode (40) is formed on a carrier (41), wherein the plurality of barcode blocks (22a) use the plurality of hidden codes (23) to make a specific barcode in the plurality of barcode blocks (22a) The block (42) has at least one of a higher thickness and a deeper depth than other barcode blocks. For example, the method described in item 12 of the scope of patent application further includes: providing a complex error correction codeword (25); and adding the complex error correction codeword (25) together with the complex hidden code (23) to the data encoding (21) ). As described in item 12 of the scope of patent application, the method further includes: providing a complex error correction codeword (25); and adding the complex error correction codeword (25) to the anti-counterfeiting data code (24). As the method described in item 12 of the scope of patent application, the two-dimensional barcode (40) includes At least two location detection patterns (43), the method further includes: adding a location detection hidden code (25') to the anti-counterfeiting data code (24), the location detection hidden code (25') indicates the two-dimensional barcode (40) When formed on the carrier (41), one of the at least two positioning detection patterns (43) has the higher thickness and the deeper than other barcode blocks The depth of at least one of them.

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