CN102945448A - Single-parameter displacement univariate cycle encrypted binary anti-counterfeiting printing method - Google Patents

Single-parameter displacement univariate cycle encrypted binary anti-counterfeiting printing method Download PDF

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CN102945448A
CN102945448A CN2012104027748A CN201210402774A CN102945448A CN 102945448 A CN102945448 A CN 102945448A CN 2012104027748 A CN2012104027748 A CN 2012104027748A CN 201210402774 A CN201210402774 A CN 201210402774A CN 102945448 A CN102945448 A CN 102945448A
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binary
group
counterfeiting information
operator control
control variables
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CN102945448B (en
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张立君
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Beijing Institute of Graphic Communication
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Beijing Institute of Graphic Communication
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Abstract

The invention relates to a single-parameter displacement univariate cycle encrypted binary anti-counterfeiting printing method which comprises the following steps: generating binary anti-counterfeiting information into a binary modulation signal through [+++] encryption algorithm and channel coding and embedding the anti-counterfeiting information into a whole page through the orderly change of the shape of an amplitude modulation dot in a circular table look-up method modulation manner. When printed matters are identified, the anti-counterfeiting information can be identified from any one fragment; and the single-parameter displacement univariate cycle encrypted binary anti-counterfeiting printing method can be widely applied to the field of anti-counterfeiting of printed matters.

Description

The scale-of-two antiforging printing method is encrypted in the circulation of one-parameter displacement single argument
affiliated technical field:
The present invention relates to a kind of anti-counterfeiting printing technology, particularly the scale-of-two anti-counterfeiting printing technology is encrypted in the circulation of a kind of one-parameter displacement single argument, and what this anti-counterfeiting printing technology can be for various printed matters is false proof.
background technology:
Existing comparatively common method for anti-counterfeit has following several: the first is laser anti-false sign, the symbol of product or special identification icon are printed to the anti-fake label of product by the recessive printing ink daylight fluorescence ink of laser printing technology, and the same class product is used the same labeling, because anti-fake label is easier to forge, and the anti-fake label of forging is used on fake products, cause the true and false of product to obscure, therefore be difficult to effectively false proof.The second is the cipher counterfeit-proof labeling, its method adopted is that every product is compiled one group of number, the coding of every product is not identical, this number is printed on labeling and hides, this number is deposited in the Computer Database that can inquire about for the consumer simultaneously, when the consumer buys product, number on sign is compared to identification by phone or networking computer input Computer Database, identical being very, difference is vacation, method is simple, identification easily, be difficult for forging, but in actual the use, because coded data is the rear labeling of printing of the unified generation of computing machine.The true and false coded data of representative products may be faked by illegal copies, and simultaneously, the coding on the product of the also recyclable not inquiry of encoding is made mark and is attached on the false pain product, and antifalse effect is difficult to guarantee.The third is texture anti-fake, false proof with the textural characteristics on its labeling, although more difficult forgery, but due to a serial number of bidding subsides, and be plain code, every piece of labeling can be inquired about repeatedly, in the necessary textural characteristics grid that the fake producer can be by warehouseman or shop-assistant be reflected during by the sequence number on labeling and inquiry have or not phenomenon to plagiarize after by this feature, forge in batches.In sum, all there is certain shortcoming in existing method for anti-counterfeit, thereby can not be from prevent fake products at all.
summary of the invention:
The shortcoming existed in order to overcome existing various printed matter anti-counterfeiting printing technology, the deficiency that the present invention is directed to existing printed matter anti-counterfeiting printing technology existence is improved prior art, a kind of encryption counterfeit printing technology of shape of scale-of-two coded signal modulation printed matter amplitude has been proposed, this anti-counterfeiting printing technology is embedded in anti-counterfeiting information in full page by the change of the shape of amplitude, can when identifying, printed matter identify anti-counterfeiting information from any one fragment, therefore there is very strong crush resistance, can fundamentally stop to adopt and take a picture, scanning waits the bootlegging behavior.
The technical solution adopted for the present invention to solve the technical problems is: the amplitude in the flexographic printing hybrid screening and frequency-modulation halftone dot are separately processed, utilize image information, Word message, the anti-counterfeiting information such as trademark information generate the binary system anti-counterfeiting information table of 8 group, for preventing from ciphering process producing information spillover, 8 one group of binary messages in binary system anti-counterfeiting information table are expanded to 16 one group of binary messages, the generation most-significant byte is 0 16 one group binary system anti-counterfeiting information table entirely, 16 binary messages of i in 16 one group binary system anti-counterfeiting information table group are denoted as to N i, i is greater than 0 positive integer, and the eight-digit binary number encryption parameter is denoted as C, the positive integer that encryption parameter C is 0<=C<=256, two binary operator control variables are denoted as k, the positive integer that operator control variables k is 0<=k<=3, operator
Figure 234758DEST_PATH_IMAGE001
adopt+, * ,-, tetra-kinds of operators of ÷, during operator control variables k=0
Figure 912864DEST_PATH_IMAGE001
be defined as respectively "+", " * ", "-", " ÷ " computing, during operator control variables k=1
Figure 472021DEST_PATH_IMAGE001
be defined as respectively "-" " * ", "+", " ÷ " computing, during operator control variables k=2
Figure 653604DEST_PATH_IMAGE001
be defined as respectively "-", " ÷ ", "+", " * " computing, during operator control variables k=3
Figure 640015DEST_PATH_IMAGE001
be defined as respectively " ÷ ", "-", " * ", "+" computing, during operator control variables k=0 cryptographic calculation be defined as [
Figure 70996DEST_PATH_IMAGE002
+
Figure 168265DEST_PATH_IMAGE003
+
Figure 204354DEST_PATH_IMAGE004
+
Figure 361666DEST_PATH_IMAGE005
], during operator control variables k=1 cryptographic calculation be defined as [
Figure 14364DEST_PATH_IMAGE006
+
Figure 384166DEST_PATH_IMAGE007
+
Figure 71499DEST_PATH_IMAGE004
+
Figure 399712DEST_PATH_IMAGE005
], during operator control variables k=2 cryptographic calculation be defined as [
Figure 8548DEST_PATH_IMAGE006
+ +
Figure 458301DEST_PATH_IMAGE008
+
Figure 957415DEST_PATH_IMAGE005
], during operator control variables k=3 cryptographic calculation be defined as [
Figure 584706DEST_PATH_IMAGE006
+ +
Figure 958235DEST_PATH_IMAGE004
+
Figure 97093DEST_PATH_IMAGE009
], the initial value of setting encryption parameter C, the initial value k=0 of setting operator control variables k, set 16 binary message N in 16 one group binary system anti-counterfeiting information table iPosition Control variable i=1, first 16 binary message N from 16 one group binary system anti-counterfeiting information table 1start, to each 16 binary message in 16 one group binary system anti-counterfeiting information table carry out [
Figure 946100DEST_PATH_IMAGE002
+
Figure 461395DEST_PATH_IMAGE003
+ +
Figure 818744DEST_PATH_IMAGE005
] cryptographic calculation, and each 16 binary message is carried out [
Figure 623889DEST_PATH_IMAGE002
+
Figure 208454DEST_PATH_IMAGE003
+
Figure 48234DEST_PATH_IMAGE004
+
Figure 60052DEST_PATH_IMAGE005
] carry out i+1 and k+1 computing when cryptographic calculation, make next computing point to [
Figure 149231DEST_PATH_IMAGE006
+
Figure 740749DEST_PATH_IMAGE007
+
Figure 231774DEST_PATH_IMAGE004
+
Figure 883335DEST_PATH_IMAGE005
] wherein i and k all increased by 1, by each 16 binary message in 16 one group binary system anti-counterfeiting information table carry out [
Figure 194230DEST_PATH_IMAGE002
+
Figure 589440DEST_PATH_IMAGE003
+
Figure 934970DEST_PATH_IMAGE004
+
Figure 288591DEST_PATH_IMAGE005
] cryptographic calculation, generating the binary add tight defense fake information table of 16 group, the shape of amplitude is set to two kinds:
Figure 555625DEST_PATH_IMAGE010
with
Figure 285683DEST_PATH_IMAGE011
, wherein
Figure 954562DEST_PATH_IMAGE010
be defined as the numeral 0,
Figure 479084DEST_PATH_IMAGE011
be defined as numeral 1, utilize the binary add tight defense fake information of 16 group generated by circulation look-up table modulation amplitude, make the shape of amplitude in its regular hybrid screening of the alteration of form according to above-mentioned two kinds of amplitudes, make in hybrid screening that the shape of amplitude is well-regulated to change, after modulation, adjacent 16 amplitudes form one group of 16 binary message, make it carry anti-counterfeiting information, and this anti-counterfeiting information is embedded in the full page site, can more effectively resist based on bootlegging behaviors such as camera, scanner, electronic documents.Obvious embed extractible anti-counterfeiting information by non-in printed matter, can provide valid certificates for genuine piece, there is stronger anti-forgery ability simultaneously, and do not increase extra false proof cost.
For solving above-mentioned technical matters, at first anti-counterfeiting information is carried out to digitizing, generate the scale-of-two anti-counterfeiting information table of 8 group, anti-counterfeiting information can be image information, Word message, trademark information etc., 8 one group of binary messages in scale-of-two anti-counterfeiting information table are expanded to 16 one group of binary messages, the generation most-significant byte is 0 16 one group scale-of-two anti-counterfeiting information table entirely, and each 16 binary message in 16 one group scale-of-two anti-counterfeiting information table are carried out
[
Figure 233414DEST_PATH_IMAGE002
+ +
Figure 821707DEST_PATH_IMAGE004
+
Figure 985972DEST_PATH_IMAGE005
] cryptographic calculation, generate the binary add tight defense fake information table of 16 group, utilize 16 binary messages process chnnel codings in 16 the one group binary add tight defense fake information table generated, generate the binary modulated signal of 16 group with error detecting and error correcting function.Chnnel coding can adopt the various ways such as loop coding, convolutional encoding or Turbo coding, original continuous is changed the line map, and image signal is processed (RIP) through rasterizing and hybrid screening is exported shadow tone hybrid screening picture signal, comprising amplitude and FM screened image signal, 16 one group of binary modulated signals that utilize to generate adopt the shapes of amplitude in circulation look-up table modulation system modulation hybrid screening picture signals, the shape that makes amplitude according to
Figure 758756DEST_PATH_IMAGE010
with
Figure 299459DEST_PATH_IMAGE011
regular changing, make adjacent 16 amplitudes in the hybrid screening picture signal carry 16 scale-of-two anti-counterfeiting information by the change of shape, thereby be created on the hybrid screening picture signal that embeds anti-counterfeiting information in the full page site, realizes anti-counterfeit printing.
When extracting anti-counterfeiting information, at first gather the halftone dot image signal, through the fuzzy diagnosis of the shape to amplitude, differentiate the shape of amplitude, extract edge signal and the shape information of amplitude, the shape information of demodulation amplitude, export the binary modulated signal of 16 group.The binary modulated signal of 16 one group to demodulation output carries out channel-decoding, generates the scale-of-two deciphering anti-counterfeiting information table of 16 group after channel-decoding, and 16 binary messages that scale-of-two is deciphered in the anti-counterfeiting information table are denoted as H i, it is known by ciphering process,
H during operator control variable k=0 i=[
Figure 208509DEST_PATH_IMAGE002
+
Figure 352131DEST_PATH_IMAGE003
+
Figure 815474DEST_PATH_IMAGE004
+
Figure 691026DEST_PATH_IMAGE005
],
H during operator control variable k=1 i=[
Figure 923424DEST_PATH_IMAGE006
+
Figure 226230DEST_PATH_IMAGE007
+ +
Figure 590532DEST_PATH_IMAGE005
],
H during operator control variable k=2 i=[
Figure 474174DEST_PATH_IMAGE006
+
Figure 416722DEST_PATH_IMAGE003
+
Figure 385815DEST_PATH_IMAGE008
+
Figure 72012DEST_PATH_IMAGE005
],
H during operator control variable k=3 i=[
Figure 810161DEST_PATH_IMAGE006
+ + +
Figure 135466DEST_PATH_IMAGE009
], 16 binary message H in scale-of-two deciphering anti-counterfeiting information table iposition control variable initial value design be i=1, first H from scale-of-two deciphering anti-counterfeiting information table 1start, each 16 binary message in scale-of-two deciphering anti-counterfeiting information table are carried out to H i=[
Figure 462542DEST_PATH_IMAGE002
+
Figure 12472DEST_PATH_IMAGE003
+
Figure 956157DEST_PATH_IMAGE004
+
Figure 984156DEST_PATH_IMAGE005
] decrypt operation, solve scale-of-two anti-counterfeiting information N i, the generation most-significant byte is 0 16 one group scale-of-two anti-counterfeiting information table entirely, removes most-significant byte, generates the scale-of-two anti-counterfeiting information table of 8 group, recovers anti-counterfeiting signal and also exports anti-counterfeiting information.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 loads the anti-counterfeiting information process flow diagram.
Fig. 2 extracts the anti-counterfeiting information process flow diagram.
Embodiment
In loading anti-counterfeiting information flow chart 1, original anti-counterfeiting information (image, word, trade mark) is through digitized processing, generate the binary system anti-counterfeiting information table of 8 group, 8 one group of binary messages in binary system anti-counterfeiting information table are expanded to 16 one group of binary messages, generate most-significant byte and be entirely 0 16 one group binary system anti-counterfeiting information table, 16 binary messages of i group in 16 one group binary system anti-counterfeiting information table are denoted as N i, i is greater than 0 positive integer, and the eight-digit binary number encryption parameter is denoted as C, the positive integer that encryption parameter C is 0<=C<=256, two binary operator control variables are denoted as k, the positive integer that operator control variables k is 0<=k<=3, operator
Figure 696897DEST_PATH_IMAGE001
Adopt+, * ,-, tetra-kinds of operators of ÷, during operator control variables k=0
Figure 152149DEST_PATH_IMAGE001
Be defined as respectively "+", " * ", "-", " ÷ " computing, during operator control variables k=1 Be defined as respectively "-" " * ", "+", " ÷ " computing, during operator control variables k=2
Figure 883662DEST_PATH_IMAGE001
Be defined as respectively "-", " ÷ ", "+", " * " computing, during operator control variables k=3
Figure 716489DEST_PATH_IMAGE001
Be defined as respectively " ÷ ", "-", " * ", "+" computing, during operator control variables k=0 cryptographic calculation be defined as [
Figure 873800DEST_PATH_IMAGE002
+
Figure 995340DEST_PATH_IMAGE003
+
Figure 896300DEST_PATH_IMAGE004
+
Figure 52475DEST_PATH_IMAGE005
], during operator control variables k=1 cryptographic calculation be defined as [
Figure 380688DEST_PATH_IMAGE006
+ +
Figure 428596DEST_PATH_IMAGE004
+
Figure 970435DEST_PATH_IMAGE005
], during operator control variables k=2 cryptographic calculation be defined as [
Figure 938391DEST_PATH_IMAGE006
+
Figure 565682DEST_PATH_IMAGE003
+
Figure 808444DEST_PATH_IMAGE008
+ ], during operator control variables k=3 cryptographic calculation be defined as [
Figure 343648DEST_PATH_IMAGE006
+
Figure 927076DEST_PATH_IMAGE003
+
Figure 973529DEST_PATH_IMAGE004
+
Figure 224382DEST_PATH_IMAGE009
], the initial value of setting encryption parameter C, the initial value k=0 of setting operator control variables k, set 16 binary message N in 16 one group binary system anti-counterfeiting information table iPosition Control variable i=1, first 16 binary message N from 16 one group binary system anti-counterfeiting information table 1Start, to each 16 binary message in 16 one group binary system anti-counterfeiting information table carry out [
Figure 534141DEST_PATH_IMAGE002
+
Figure 136023DEST_PATH_IMAGE003
+
Figure 189430DEST_PATH_IMAGE004
+
Figure 560368DEST_PATH_IMAGE005
] cryptographic calculation, and each 16 binary message is carried out [
Figure 41028DEST_PATH_IMAGE002
+ +
Figure 252884DEST_PATH_IMAGE004
+ ] carry out i+1 and k+1 computing when cryptographic calculation, make next computing point to [
Figure 395469DEST_PATH_IMAGE006
+
Figure 175206DEST_PATH_IMAGE007
+ + ] wherein i and k all increased by 1, by each 16 binary message in 16 one group binary system anti-counterfeiting information table carry out [
Figure 269567DEST_PATH_IMAGE002
+
Figure 67759DEST_PATH_IMAGE003
+
Figure 266659DEST_PATH_IMAGE004
+
Figure 466696DEST_PATH_IMAGE005
] cryptographic calculation, generating the binary add tight defense fake information table of 16 group, the shape of amplitude is set to two kinds:
Figure 460060DEST_PATH_IMAGE010
With
Figure 745548DEST_PATH_IMAGE011
, wherein
Figure 13718DEST_PATH_IMAGE010
Be defined as the numeral 0,
Figure 537104DEST_PATH_IMAGE011
Be defined as numeral 1,16 binary add tight defense fake informations of generation, through chnnel coding, generate the binary modulated signal with error detecting and error correcting function.Chnnel coding can adopt the various ways such as loop coding, convolutional encoding or Turbo coding.Original continuous is changed the line map, and image signal is processed (RIP) through rasterizing and hybrid screening is exported shadow tone hybrid screening picture signal, comprising amplitude and FM screened image signal.Utilize the binary modulated signal generated to adopt the modulation system of tabling look-up that circulates, the shape of amplitude in modulation hybrid screening picture signal, make in hybrid screening that the shape of amplitude is regular to change, generate the hybrid screening picture signal that embeds anti-counterfeiting information, by the circulation modulation system of tabling look-up, make adjacent 16 amplitudes generate 16 bit binary data by the change of shape, make it carry anti-counterfeiting information, and this anti-counterfeiting information is embedded in the full page site, realize anti-counterfeit printing.
In extracting anti-counterfeiting information process flow diagram 2, when extracting anti-counterfeiting information, at first gather the halftone dot image signal, fuzzy diagnosis through the shape to amplitude, differentiate the shape of amplitude, extract edge signal and the shape information of amplitude, the shape information of demodulation amplitude, export the binary modulated signal of 16 group.The binary modulated signal of 16 one group to demodulation output carries out channel-decoding, generates the scale-of-two deciphering anti-counterfeiting information table of 16 group after channel-decoding, and 16 binary messages that scale-of-two is deciphered in the anti-counterfeiting information table are denoted as H i, it is known by ciphering process,
H during operator control variable k=0 i=[
Figure 498106DEST_PATH_IMAGE002
+
Figure 739732DEST_PATH_IMAGE003
+
Figure 546014DEST_PATH_IMAGE004
+
Figure 720643DEST_PATH_IMAGE005
],
H during operator control variable k=1 i=[
Figure 55810DEST_PATH_IMAGE006
+
Figure 315890DEST_PATH_IMAGE007
+ +
Figure 423840DEST_PATH_IMAGE005
],
H during operator control variable k=2 i=[
Figure 195487DEST_PATH_IMAGE006
+
Figure 677284DEST_PATH_IMAGE003
+ +
Figure 443432DEST_PATH_IMAGE005
],
H during operator control variable k=3 i=[
Figure 917138DEST_PATH_IMAGE006
+
Figure 886231DEST_PATH_IMAGE003
+ +
Figure 310576DEST_PATH_IMAGE009
], 16 binary message H in scale-of-two deciphering anti-counterfeiting information table iposition control variable initial value design be i=1, first H from scale-of-two deciphering anti-counterfeiting information table 1start, each 16 binary message in scale-of-two deciphering anti-counterfeiting information table are carried out to H i=[
Figure 424026DEST_PATH_IMAGE002
+
Figure 880415DEST_PATH_IMAGE003
+ +
Figure 697378DEST_PATH_IMAGE005
] decrypt operation, solve scale-of-two anti-counterfeiting information N i, the generation most-significant byte is 0 16 one group scale-of-two anti-counterfeiting information table entirely, removes most-significant byte, generates the scale-of-two anti-counterfeiting information table of 8 group, recovers anti-counterfeiting signal and also exports anti-counterfeiting information.

Claims (1)

1. one kind generates the binary modulated signal by anti-counterfeiting information by cryptographic calculation and chnnel coding, and encrypts the binary system antiforging printing method by the circulation one-parameter displacement single argument circulation that modulation system is embedded in anti-counterfeiting information in full page of tabling look-up, It is characterized in that:Anti-counterfeiting information is carried out to digitlization, generate the binary system anti-counterfeiting information table of 8 group, anti-counterfeiting information is image information, Word message or trademark information, for preventing from ciphering process producing information spillover, 8 one group of binary messages in binary system anti-counterfeiting information table are expanded to 16 one group of binary messages, the generation most-significant byte is 0 16 one group binary system anti-counterfeiting information table entirely, and 16 binary messages of the group of the i in 16 one group binary system anti-counterfeiting information table are denoted as to N i, i is greater than 0 positive integer, and the eight-digit binary number encryption parameter is denoted as C, the positive integer that encryption parameter C is 0<=C<=256, two binary operator control variables are denoted as k, the positive integer that operator control variables k is 0<=k<=3, operator Adopt+, * ,-, tetra-kinds of operators of ÷, during operator control variables k=0 Be defined as respectively "+", " * ", "-", " ÷ " computing, during operator control variables k=1
Figure 576155DEST_PATH_IMAGE001
Be defined as respectively "-" " * ", "+", " ÷ " computing, during operator control variables k=2
Figure 757738DEST_PATH_IMAGE001
Be defined as respectively "-", " ÷ ", "+", " * " computing, during operator control variables k=3
Figure 478569DEST_PATH_IMAGE001
Be defined as respectively " ÷ ", "-", " * ", "+" computing, during operator control variables k=0 cryptographic calculation be defined as [
Figure 2012104027748100001DEST_PATH_IMAGE002
+ +
Figure 2012104027748100001DEST_PATH_IMAGE004
+
Figure 6819DEST_PATH_IMAGE005
], during operator control variables k=1 cryptographic calculation be defined as [
Figure 2012104027748100001DEST_PATH_IMAGE006
+
Figure 370804DEST_PATH_IMAGE007
+
Figure 731379DEST_PATH_IMAGE004
+ ], during operator control variables k=2 cryptographic calculation be defined as [
Figure 19458DEST_PATH_IMAGE006
+
Figure 441212DEST_PATH_IMAGE003
+
Figure 2012104027748100001DEST_PATH_IMAGE008
+ ], during operator control variables k=3 cryptographic calculation be defined as [
Figure 909419DEST_PATH_IMAGE006
+
Figure 614070DEST_PATH_IMAGE003
+
Figure 624751DEST_PATH_IMAGE004
+ ], the initial value of setting encryption parameter C, the initial value k=0 of setting operator control variables k, set 16 binary message N in 16 one group binary system anti-counterfeiting information table iPosition Control variable i=1, first 16 binary message N from 16 one group binary system anti-counterfeiting information table 1Start, to each 16 binary message in 16 one group binary system anti-counterfeiting information table carry out [
Figure 219998DEST_PATH_IMAGE002
+
Figure 462760DEST_PATH_IMAGE003
+
Figure 859106DEST_PATH_IMAGE004
+
Figure 997964DEST_PATH_IMAGE005
] cryptographic calculation, and each 16 binary message is carried out [
Figure 112550DEST_PATH_IMAGE002
+
Figure 893425DEST_PATH_IMAGE003
+
Figure 409856DEST_PATH_IMAGE004
+
Figure 250774DEST_PATH_IMAGE005
] carry out i+1 and k+1 computing when cryptographic calculation, make next computing point to [
Figure 321498DEST_PATH_IMAGE006
+
Figure 906063DEST_PATH_IMAGE007
+
Figure 277001DEST_PATH_IMAGE004
+ ] wherein i and k all increased by 1, by each 16 binary message in 16 one group binary system anti-counterfeiting information table carry out [
Figure 581261DEST_PATH_IMAGE002
+
Figure 500675DEST_PATH_IMAGE003
+
Figure 194962DEST_PATH_IMAGE004
+ ] cryptographic calculation, generating the binary add tight defense fake information table of 16 group, the shape of amplitude is set to two kinds:
Figure 2012104027748100001DEST_PATH_IMAGE010
With , wherein Be defined as the numeral 0,
Figure 429317DEST_PATH_IMAGE011
Be defined as numeral 1, utilize the binary add tight defense fake information of 16 group generated through chnnel coding, generation has 16 one group of binary modulated signals of error detecting and error correcting function, original continuous is changed the line map, and image signal is processed (RIP) through rasterizing and hybrid screening is exported halftoning hybrid screening picture signal, comprising amplitude and FM screened image signal, 16 one group of binary modulated signals that utilize to generate adopt the shapes of amplitude in circulation look-up table modulation system modulation hybrid screening picture signals, the shape that makes amplitude according to With
Figure 846709DEST_PATH_IMAGE011
Regular changing, make adjacent 16 amplitudes in the hybrid screening picture signal carry 16 binary add tight defense fake informations by the change of shape, thereby be created on the hybrid screening picture signal that embeds anti-counterfeiting information in the full page site, realize anti-counterfeit printing.
CN201210402774.8A 2012-10-22 2012-10-22 Single-parameter displacement single argument circulation encrypted binary antiforging printing method Expired - Fee Related CN102945448B (en)

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CN102184428A (en) * 2011-04-14 2011-09-14 北京印刷学院 Encrypting anti-counterfeiting printing technology for modulating shapes of amplitude modulation dots of printed work through binary-system encrypting signal
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US20110261376A1 (en) * 2008-10-20 2011-10-27 Steven J Simske Method For Enhancing Security Printing
CN102184428A (en) * 2011-04-14 2011-09-14 北京印刷学院 Encrypting anti-counterfeiting printing technology for modulating shapes of amplitude modulation dots of printed work through binary-system encrypting signal

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