Patent US6239818B1 successfully refreshed from Google Patents.
US6239818B1
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Printing method and apparatus
Assignee: Fujifilm Corp
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Filing: 1999-08-27
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Granted: 2001-05-29
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Expires: 2019-08-27
Abstract
Abstract In a printing method for embedding a pattern signal, which represents a predetermined pattern, into color print signals, and printing an image, in which the predetermined pattern has been embedded, the color print signals are modulated such that signal components of the color print signals corresponding to a pattern area, into which the pattern is embedded, approximately undergo conditional color matching with signal components of the color print signals corresponding to the other area. Modulated print signals are obtained from the modulation, and the printing is performed in accordance with the modulated print signals. Various kinds of information, such as information for prevention of illegal duplication and merchandise control information, can thus be embedded with a simple technique into a print.
Inventors
- 👤 Akira Yoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:29
CPC Classifications
G; G06; G06T; G06T1/00; G06T1/0021; G06T1/0028; H; H04; H04N; H04N1/00; H04N1/32; H04N1/32101; H04N1/32144; H04N1/32149; H04N1/32309; G06T2201/00; G06T2201/005; G06T2201/0051; H04N2201/00; H04N2201/0077; H04N2201/0082; H04N2201/32; H04N2201/3201; H04N2201/3225; H04N2201/3226; H04N2201/3233; H04N2201/3269; H04N2201/327; Y; Y10; Y10S; Y10S707/00; Y10S707/99941; Y10S707/99944
Claims Analysis
Total Claims: 66
Claim 1
Independent Claim
90 words
A printing method, wherein a pattern signal, which represents a predetermined pattern, is embedded into color print signals, and an image, in which the predetermined pattern has been embedded, is printed, the method comprising the steps of: i) modulating the color print signals such that signal components of the color print signals corresponding to a pattern area, into which the pattern is embedded, undergo conditional color matching with signal components of the color print signals corresponding to a non-pattern area, and ii) printing in accordance with said modulated print signals.
Claim 2
Dependent Claim
90 words
A printing method, wherein a pattern signal, which represents a predetermined pattern, is embedded into color print signals, and an image, in which the predetermined pattern has been embedded, is printed, the method comprising the steps of: i) modulating the color print signals such that signal components of the color print signals corresponding to a pattern area, into which the pattern is embedded, undergo conditional color matching with signal components of the color print signals corresponding to a non-pattern area, and ii) printing in accordance with said modulated print signals.
Claim 3
Dependent Claim
81 words
A printing method as defined in claim 1 wherein the color print signals are composed of C, M, Y, and K four color signals, and values of at least the K signal, which is among said four color signals, are altered such that the signal components of the color print signals corresponding to said pattern area, into which the pattern is embedded, undergo the conditional color matching with the signal components of the color print signals corresponding to said non-pattern area.
Claim 4
Dependent Claim
66 words
A pattern read-out method for reading out the pattern from the image having been obtained with a printing method as defined in claim 1 wherein the pattern is read out with detection means, which has spectral sensitivity characteristics different from the spectral sensitivity characteristics of the human eyes such that said detection means detects patterns in said image that is not detectable by the human eyes.
Claim 5
Dependent Claim
103 words
A recording medium, on which a program for causing a computer to execute a pattern read-out method has been recorded and from which the computer is capable of reading the program, the pattern read-out method comprising reading out the pattern from the image having been obtained with a printing method as defined in claim 1 , wherein the program comprises the procedure of reading out the pattern with detection means, which has spectral sensitivity characteristics different from the spectral sensitivity characteristics of the human eyes such that said detection means detects patterns in said image that is not detectable by the human eyes.
Claim 6
Dependent Claim
103 words
A printing apparatus, wherein a pattern signal, which represents a predetermined pattern, is embedded into color print signals, and an image, in which the predetermined pattern has been embedded, is printed, the apparatus comprising: i) modulation means for modulating the color print signals such that signal components of the color print signals corresponding to a pattern area, into which the pattern is embedded, undergo conditional color matching with signal components of the color print signals corresponding to the non-pattern area, modulated print signals being obtained from the modulation, and ii) printing means for performing the printing in accordance with said modulated print signals.
Claim 7
Dependent Claim
103 words
A printing apparatus, wherein a pattern signal, which represents a predetermined pattern, is embedded into color print signals, and an image, in which the predetermined pattern has been embedded, is printed, the apparatus comprising: i) modulation means for modulating the color print signals such that signal components of the color print signals corresponding to a pattern area, into which the pattern is embedded, undergo conditional color matching with signal components of the color print signals corresponding to the non-pattern area, modulated print signals being obtained from the modulation, and ii) printing means for performing the printing in accordance with said modulated print signals.
Claim 8
Dependent Claim
84 words
A printing apparatus as defined in claim 5 wherein the color print signals are composed of C, M, Y, and K four color signals, and said modulation means alters values of at least the K signal, which is among said four color signals, such that the signal components of the color print signals corresponding to said pattern area, into which the pattern is embedded, approximately undergo the conditional color matching with the signal components of the color print signals corresponding to said non-pattern area.
Claim 9
Dependent Claim
66 words
A pattern read-out apparatus for reading out the pattern from the image having been obtained with a printing apparatus as defined in claim 5 , the pattern is read-out apparatus comprising detection means, which has spectral sensitivity characteristics different from the spectral sensitivity characteristics of the human eyes such that said detection means detects patterns in said image that is not detectable by the human eyes.
Claim 10
Dependent Claim
129 words
A recording medium, on which a program for causing a computer to execute a printing method has been recorded and from which the computer is capable of reading the program, the printing method comprising embedding a pattern signal, which represents a predetermined pattern, into color print signals, and printing an image, in which the predetermined pattern has been embedded, wherein the program comprises the procedures of: i) modulating the color print signals such that signal components of the color print signals corresponding to a pattern area, into which the pattern is embedded, undergo conditional color matching with signal components of the color print signals corresponding to a non-pattern area, modulated print signals being obtained from the modulation, and ii) performing the printing in accordance with said modulated print signals.
Claim 11
Dependent Claim
129 words
A recording medium, on which a program for causing a computer to execute a printing method has been recorded and from which the computer is capable of reading the program, the printing method comprising embedding a pattern signal, which represents a predetermined pattern, into color print signals, and printing an image, in which the predetermined pattern has been embedded, wherein the program comprises the procedures of: i) modulating the color print signals such that signal components of the color print signals corresponding to a pattern area, into which the pattern is embedded, undergo conditional color matching with signal components of the color print signals corresponding to a non-pattern area, modulated print signals being obtained from the modulation, and ii) performing the printing in accordance with said modulated print signals.
Claim 12
Dependent Claim
93 words
A recording medium as defined in claim 8 wherein the color print signals are composed of C, M, Y, and K four color signals, and the procedure for obtaining said modulated print signals is a procedure for altering values of at least the K signal, which is among said four color signals, such that the signal components of the color print signals corresponding to said pattern area, into which the pattern is embedded, undergo the conditional color matching with the signal components of the color print signals corresponding to said a non-pattern area.
Claim 13
Dependent Claim
98 words
A printing method, wherein an image signal, into which subsidiary information having been deep-encrypted with a predetermined deep encryption technique has been embedded, is transformed into a print signal, and printing is performed in accordance with the print signal, the method comprising the steps of: i) separating the subsidiary information from the image signal, a separated image signal free from the subsidiary information being obtained from the separation, ii) transforming said separated image signal into the print signal, and iii) embedding the subsidiary information into the print signal with a technique different from the predetermined deep encryption technique.
Claim 14
Dependent Claim
98 words
A printing method, wherein an image signal, into which subsidiary information having been deep-encrypted with a predetermined deep encryption technique has been embedded, is transformed into a print signal, and printing is performed in accordance with the print signal, the method comprising the steps of: i) separating the subsidiary information from the image signal, a separated image signal free from the subsidiary information being obtained from the separation, ii) transforming said separated image signal into the print signal, and iii) embedding the subsidiary information into the print signal with a technique different from the predetermined deep encryption technique.
Claim 15
Dependent Claim
52 words
A printing method as defined in claim 10 wherein the print signal is modulated such that signal components of the print signal corresponding to a subsidiary information area, into which the subsidiary information is embedded, undergo conditional color matching with signal components of the print signal corresponding to a non-subsidiary information area.
Claim 16
Dependent Claim
80 words
A printing method as defined in claim 11 wherein the print signal is composed of C, M, Y, and K color signals, and values of at least the K signal, which is among said four color signals, are altered such that the signal components of the print signal corresponding to said subsidiary information area, into which the subsidiary information is embedded, undergo the conditional color matching with the signal components of the print signal corresponding to said non-subsidiary information area.
Claim 17
Dependent Claim
104 words
A printing apparatus, wherein an image signal, into which subsidiary information having been deep-encrypted with a predetermined deep encryption technique has been embedded, is transformed into a print signal, and printing is performed in accordance with the print signal, the apparatus comprising: i) separation means for separating the subsidiary information from the image signal, a separated image signal free from the subsidiary information being obtained from the separation, ii) transform means for transforming said separated image signal into the print signal, and iii) embedding means for embedding the subsidiary information into the print signal with a technique different from the predetermined deep encryption technique.
Claim 18
Dependent Claim
104 words
A printing apparatus, wherein an image signal, into which subsidiary information having been deep-encrypted with a predetermined deep encryption technique has been embedded, is transformed into a print signal, and printing is performed in accordance with the print signal, the apparatus comprising: i) separation means for separating the subsidiary information from the image signal, a separated image signal free from the subsidiary information being obtained from the separation, ii) transform means for transforming said separated image signal into the print signal, and iii) embedding means for embedding the subsidiary information into the print signal with a technique different from the predetermined deep encryption technique.
Claim 19
Dependent Claim
53 words
A printing apparatus as defined in claim 13 wherein said embedding means modulates the print signal such that signal components of the print signal corresponding to a subsidiary information area, into which the subsidiary information is embedded, undergo conditional color matching with signal components of the print signal corresponding to a non-subsidiary information.
Claim 20
Dependent Claim
83 words
A printing apparatus as defined in claim 14 wherein the print signal is composed of C, M, Y, and K four color signals, and said embedding means alters values of at least the K signal, which is among said four color signals, such that the signal components of the print signal corresponding to said subsidiary information area, into which the subsidiary information is embedded, undergo the conditional color matching with the signal components of the print signal corresponding to said non-subsidiary information area.
Claim 21
Dependent Claim
127 words
A recording medium, on which a program for causing a computer to execute a printing method has been recorded and from which the computer is capable of reading the program, the printing method comprising transforming an image signal, into which subsidiary information having been deep-encrypted with a predetermined deep encryption technique has been embedded, into a print signal, and performing printing in accordance with the print signal, wherein the program comprises the procedures of: i) separating the subsidiary information from the image signal, a separated image signal free from the subsidiary information being obtained from the separation, ii) transforming said separated image signal into the print signal, and iii) embedding the subsidiary information into the print signal with a technique different from the predetermined deep encryption technique.
Claim 22
Dependent Claim
127 words
A recording medium, on which a program for causing a computer to execute a printing method has been recorded and from which the computer is capable of reading the program, the printing method comprising transforming an image signal, into which subsidiary information having been deep-encrypted with a predetermined deep encryption technique has been embedded, into a print signal, and performing printing in accordance with the print signal, wherein the program comprises the procedures of: i) separating the subsidiary information from the image signal, a separated image signal free from the subsidiary information being obtained from the separation, ii) transforming said separated image signal into the print signal, and iii) embedding the subsidiary information into the print signal with a technique different from the predetermined deep encryption technique.
Claim 23
Dependent Claim
66 words
A recording medium as defined in claim 16 wherein the procedure for embedding the subsidiary information into the print signal is a procedure for modulating the print signal such that signal components of the print signal corresponding to a subsidiary information area, into which the subsidiary information is embedded, undergo conditional color matching with signal components of the print signal corresponding to a non-subsidiary information area.
Claim 24
Dependent Claim
95 words
A recording medium as defined in claim 17 wherein the print signal is composed of C, M, Y, and K four color signals, and the procedure for embedding the subsidiary information into the print signal is a procedure for altering values of at least the K signal, which is among said four color signals, such that the signal components of the print signal corresponding to said subsidiary information area, into which the subsidiary information is embedded, undergo the conditional color matching with the signal components of the print signal corresponding to said non-subsidiary information area.
Claim 25
Independent Claim
104 words
A method to print an embedded pattern in an image, comprising: a) scanning said image to generate an original image signal; b) generating a pattern signal representing said pattern to be embedded; c) embedding said pattern signal to said original image signal to generate a final image signal such that a pattern area into which said pattern signal is embedded is conditionally color matched with a non-pattern area in said final image signal, wherein said conditionally matched colors appear to be identical under a normal illumination, but appear to be different under a special illumination; and d) printing according to said final image signal.
Claim 26
Independent Claim
104 words
A method to print an embedded pattern in an image, comprising: a) scanning said image to generate an original image signal; b) generating a pattern signal representing said pattern to be embedded; c) embedding said pattern signal to said original image signal to generate a final image signal such that a pattern area into which said pattern signal is embedded is conditionally color matched with a non-pattern area in said final image signal, wherein said conditionally matched colors appear to be identical under a normal illumination, but appear to be different under a special illumination; and d) printing according to said final image signal.
Claim 27
Dependent Claim
68 words
The method of claim 19 , wherein said step c) comprises: c1) generating a first transformation image signal via a first transformation of said original image signal corresponding to said pattern area; c2) generating a second transformation image signal via a second transformation of said original image signal corresponding to said non-pattern area; and c3) combining said first and second image signals to generate said final image signal.
Claim 28
Dependent Claim
28 words
The method of claim 20 , wherein said first transformation is accomplished through a first look-up table and said second transformation is accomplished through a second look-up table.
Claim 29
Dependent Claim
27 words
The method of claim 21 , further comprising: c4) generating values of said first and second look up table based on values of said original image signal.
Claim 30
Dependent Claim
19 words
The method of claim 19 , wherein said original image signal is composed of R, G, and B components.
Claim 31
Dependent Claim
20 words
The method of claim 19 , wherein said final image signal is composed of C, M, Y, and K components.
Claim 32
Dependent Claim
28 words
The method of claim 24 , wherein values of said K component are altered to conditionally color match said pattern and non-pattern areas of said final image signal.
Claim 33
Dependent Claim
20 words
The method of claim 19 , wherein said pattern may be one of a binary stream and a multi-valued stream.
Claim 34
Dependent Claim
22 words
The method of claim 19 , wherein said final image signal is composed of C, M, Y, K, O, and G components.
Claim 35
Independent Claim
111 words
An apparatus to print an embedded pattern in an image, comprising: a scanner scanning said image to generate an original image signal; a pattern signal generator generating a pattern signal representing said pattern to be embedded; a pattern embedder embedding said pattern signal to said original image signal to generate a final image signal such that a pattern area into which said pattern signal is embedded is conditionally color matched with a non-pattern area in said final image signal, wherein said conditionally matched colors appear to be identical under a normal illumination, but appear to be different under a special illumination; and a printer printing according to said final image signal.
Claim 36
Independent Claim
111 words
An apparatus to print an embedded pattern in an image, comprising: a scanner scanning said image to generate an original image signal; a pattern signal generator generating a pattern signal representing said pattern to be embedded; a pattern embedder embedding said pattern signal to said original image signal to generate a final image signal such that a pattern area into which said pattern signal is embedded is conditionally color matched with a non-pattern area in said final image signal, wherein said conditionally matched colors appear to be identical under a normal illumination, but appear to be different under a special illumination; and a printer printing according to said final image signal.
Claim 37
Dependent Claim
71 words
The apparatus of claim 28 , further comprising: a first transformer generating a first transformation image signal via a first transformation of said original image signal corresponding to said pattern area; a second transformer generating a second transformation image signal via a second transformation of said original image signal corresponding to said non-pattern area; and a combining means combining said first and second image signals to generate said final image signal.
Claim 38
Dependent Claim
24 words
The apparatus of claim 29 , wherein said first transformer is a first look-up table and said second transformer is a second look-up table.
Claim 39
Dependent Claim
30 words
The apparatus of claim 30 , further comprising: a look-up table generator generating values of said first and second look up table based on values of said original image signal.
Claim 40
Dependent Claim
19 words
The apparatus of claim 28 , wherein said original image signal is composed of R, G, and B components.
Claim 41
Dependent Claim
20 words
The apparatus of claim 28 , wherein said final image signal is composed of C, M, Y, and K components.
Claim 42
Dependent Claim
28 words
The apparatus of claim 33 , wherein values of said K component are altered to conditionally color match said pattern and non-pattern areas of said final image signal.
Claim 43
Dependent Claim
20 words
The apparatus of claim 28 , wherein said pattern may be one of a binary stream and a multi-valued stream.
Claim 44
Dependent Claim
22 words
The apparatus of claim 28 , wherein said final image signal is composed of C, M, Y, K, O, and G components.
Claim 45
Independent Claim
173 words
A method to print a deep-encrypted subsidiary information in an image, comprising: a) scanning said image to generate an original image signal; b) generating and deep-encrypting a subsidiary information signal; c) electronically watermarking said deep-encrypted subsidiary information into said original image signal to generate a first intermediate image signal such that said subsidiary information appears as noise if said intermediate image signal is printed; d) separating said first intermediate image signal into said deep-encrypted subsidiary information and a second intermediate image signal, said second intermediate image signal containing none of said deep-encrypted subsidiary information; e) embedding said separated deep-encrypted subsidiary information signal to said second intermediate image signal to generate a final image signal such that a subsidiary information area into which said subsidiary information signal is embedded is conditionally color matched with a non-subsidiary information area in said final image signal, wherein said conditionally matched colors appear to be identical under a normal illumination, but appear to be different under a special illumination; and f) printing according to said final image signal.
Claim 46
Independent Claim
173 words
A method to print a deep-encrypted subsidiary information in an image, comprising: a) scanning said image to generate an original image signal; b) generating and deep-encrypting a subsidiary information signal; c) electronically watermarking said deep-encrypted subsidiary information into said original image signal to generate a first intermediate image signal such that said subsidiary information appears as noise if said intermediate image signal is printed; d) separating said first intermediate image signal into said deep-encrypted subsidiary information and a second intermediate image signal, said second intermediate image signal containing none of said deep-encrypted subsidiary information; e) embedding said separated deep-encrypted subsidiary information signal to said second intermediate image signal to generate a final image signal such that a subsidiary information area into which said subsidiary information signal is embedded is conditionally color matched with a non-subsidiary information area in said final image signal, wherein said conditionally matched colors appear to be identical under a normal illumination, but appear to be different under a special illumination; and f) printing according to said final image signal.
Claim 47
Dependent Claim
68 words
The method of claim 37 , wherein said step e) comprises: e1) generating a first transformation image signal via a first transformation of said original image signal corresponding to said pattern area; e2) generating a second transformation image signal via a second transformation of said original image signal corresponding to said non-pattern area; and e3) combining said first and second image signals to generate said final image signal.
Claim 48
Dependent Claim
28 words
The method of claim 38 , wherein said first transformation is accomplished through a first look-up table and said second transformation is accomplished through a second look-up table.
Claim 49
Dependent Claim
28 words
The method of claim 39 , further comprising: c4) generating values of said first and second look up table based on values of said second intermediate image signal.
Claim 50
Dependent Claim
19 words
The method of claim 37 , wherein said original image signal is composed of R, G, and B components.
Claim 51
Dependent Claim
20 words
The method of claim 37 , wherein said final image signal is composed of C, M, Y, and K components.
Claim 52
Dependent Claim
30 words
The method of claim 42 , wherein values of said K component are altered to conditionally color match said subsidiary information and non-subsidiary information areas of said final image signal.
Claim 53
Dependent Claim
22 words
The method of claim 37 , wherein said final image signal is composed of C, M, Y, K, O, and G components.
Claim 54
Independent Claim
191 words
An apparatus to print a deep-encrypted subsidiary information in an image, comprising: a scanner scanning said image to generate an original image signal; a subsidiary info generator generating a subsidiary information signal; an encryptor deep-encrypting said subsidiary information signal; a subsidiary information embedder electronically watermarking said deep-encrypted subsidiary information into said original image signal to generate a first intermediate image signal such that said subsidiary information appears as noise if said intermediate image signal is printed; a subsidiary information separator separating said first intermediate image signal into said deep-encrypted subsidiary information and a second intermediate image signal, said second intermediate image signal containing none of said deep-encrypted subsidiary information; a pattern embedder embedding said separated deep-encrypted subsidiary information signal to said second intermediate image signal to generate a final image signal such that a subsidiary information area into which said subsidiary information signal is embedded is conditionally color matched with a non-subsidiary information area in said final image signal, wherein said conditionally matched colors appear to be identical under a normal illumination, but appear to be different under a special illumination; and a printer printing according to said final image signal.
Claim 55
Independent Claim
191 words
An apparatus to print a deep-encrypted subsidiary information in an image, comprising: a scanner scanning said image to generate an original image signal; a subsidiary info generator generating a subsidiary information signal; an encryptor deep-encrypting said subsidiary information signal; a subsidiary information embedder electronically watermarking said deep-encrypted subsidiary information into said original image signal to generate a first intermediate image signal such that said subsidiary information appears as noise if said intermediate image signal is printed; a subsidiary information separator separating said first intermediate image signal into said deep-encrypted subsidiary information and a second intermediate image signal, said second intermediate image signal containing none of said deep-encrypted subsidiary information; a pattern embedder embedding said separated deep-encrypted subsidiary information signal to said second intermediate image signal to generate a final image signal such that a subsidiary information area into which said subsidiary information signal is embedded is conditionally color matched with a non-subsidiary information area in said final image signal, wherein said conditionally matched colors appear to be identical under a normal illumination, but appear to be different under a special illumination; and a printer printing according to said final image signal.
Claim 56
Dependent Claim
71 words
The apparatus of claim 45 , further comprising: a first transformer generating a first transformation image signal via a first transformation of said original image signal corresponding to said pattern area; a second transformer generating a second transformation image signal via a second transformation of said original image signal corresponding to said non-pattern area; and a combining means combining said first and second image signals to generate said final image signal.
Claim 57
Dependent Claim
24 words
The apparatus of claim 46 , wherein said first transformer is a first look-up table and said second transformer is a second look-up table.
Claim 58
Dependent Claim
30 words
The apparatus of claim 47 , further comprising: a look-up generator generating values of said first and second look up table based on values of said second intermediate image signal.
Claim 59
Dependent Claim
19 words
The apparatus of claim 45 , wherein said original image signal is composed of R, G, and B components.
Claim 60
Dependent Claim
20 words
The apparatus of claim 45 , wherein said final image signal is composed of C, M, Y, and K components.
Claim 61
Dependent Claim
30 words
The apparatus of claim 50 , wherein values of said K component are altered to conditionally color match said subsidiary information and non-subsidiary information areas of said final image signal.
Claim 62
Dependent Claim
22 words
The method of claim 45 , wherein said final image signal is composed of C, M, Y, K, O, and G components.
Claim 63
Dependent Claim
125 words
A recording medium on which a program to execute a printing method has been recorded and which a computer is capable of reading and executing the program, wherein said printing method includes: a) scanning said image to generate an original image signal; b) generating a pattern signal representing said pattern to be embedded; c) embedding said pattern signal to said original image signal to generate a final image signal such that a pattern area into which said pattern signal is embedded is conditionally color matched with a non-pattern area in said final image signal, wherein said conditionally matched colors appear to be identical under a normal illumination, but appear to be different under a special illumination; and d) printing according to said final image signal.
Claim 64
Dependent Claim
125 words
A recording medium on which a program to execute a printing method has been recorded and which a computer is capable of reading and executing the program, wherein said printing method includes: a) scanning said image to generate an original image signal; b) generating a pattern signal representing said pattern to be embedded; c) embedding said pattern signal to said original image signal to generate a final image signal such that a pattern area into which said pattern signal is embedded is conditionally color matched with a non-pattern area in said final image signal, wherein said conditionally matched colors appear to be identical under a normal illumination, but appear to be different under a special illumination; and d) printing according to said final image signal.
Claim 65
Dependent Claim
193 words
A recording medium on which a program to execute a printing method has been recorded and which a computer is capable of reading and executing the program, wherein said printing method includes: a) scanning said image to generate an original image signal; b) generating and deep-encrypting a subsidiary information signal; c) electronically watermarking said deep-encrypted subsidiary information into said original image signal to generate a first intermediate image signal such that said subsidiary information appears as noise if said intermediate image signal is printed; d) separating said first intermediate image signal into said deep-encrypted subsidiary information and a second intermediate image signal, said second intermediate image signal containing none of said deep-encrypted subsidiary information; e) embedding said separated deep-encrypted subsidiary information signal to said second intermediate image signal to generate a final image signal such that a subsidiary information area into which said subsidiary information signal is embedded is conditionally color matched with a non-subsidiary information area in said final image signal, wherein said conditionally matched colors appear to be identical under a normal illumination, but appear to be different under a special illumination; and f) printing according to said final image signal.
Claim 66
Dependent Claim
193 words
A recording medium on which a program to execute a printing method has been recorded and which a computer is capable of reading and executing the program, wherein said printing method includes: a) scanning said image to generate an original image signal; b) generating and deep-encrypting a subsidiary information signal; c) electronically watermarking said deep-encrypted subsidiary information into said original image signal to generate a first intermediate image signal such that said subsidiary information appears as noise if said intermediate image signal is printed; d) separating said first intermediate image signal into said deep-encrypted subsidiary information and a second intermediate image signal, said second intermediate image signal containing none of said deep-encrypted subsidiary information; e) embedding said separated deep-encrypted subsidiary information signal to said second intermediate image signal to generate a final image signal such that a subsidiary information area into which said subsidiary information signal is embedded is conditionally color matched with a non-subsidiary information area in said final image signal, wherein said conditionally matched colors appear to be identical under a normal illumination, but appear to be different under a special illumination; and f) printing according to said final image signal.
References Cited (Backward Citations)
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| 3.5 Years (Year 4) | 2004-05-28 | 2004-11-27 | 2005-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-05-28 | 2008-11-27 | 2009-05-29 | $3760.00 | Window Closed / Lapsed |
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