Patent EP0449328A2 successfully refreshed from Google Patents.
EP0449328A2
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Image processing method and apparatus
Assignee: Canon Inc
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Filing: 1991-04-02
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Granted: —
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Expires: 2011-04-02
Abstract
Abstract This invention relates to an image processing method and apparatus and particularly solves problems of image degradation in generation copying for performing copying using a copy output as an original. According to this invention, a generation copy mode is provided in addition to the normal copy mode, thereby solving the above problem.
Inventors
- 👤 Akio C/O Canon Kabushiki Kaisha Suzuki
- 👤 Yoshihiro C/O Canon Kabushiki Kaisha Takada
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 04:45
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/40006; H04N1/407
Claims Analysis
Total Claims: 51
Claim 1
Independent Claim
93 words
An image processing apparatus comprising: a) input means for inputting image data; b) processing means for processing the image data input by the input means; c) output means for outputting the image data processed by the processing means; and d) mode selecting means for selecting one of a first mode for causing the input means to input the image data, causing the processing means to process the image data, and causing the output means to output the image data, and a second mode for causing the input means to input other image data.
Claim 2
Dependent Claim
19 words
An apparatus according to claim 1, wherein said input means is an image reader constituted by a CCD sensor.
Claim 3
Dependent Claim
18 words
An apparatus according to claim 1, wherein said processing means performs density correction of the input image data.
Claim 4
Dependent Claim
18 words
An apparatus according to claim 1, wherein said processing means performs color correction of the input image data.
Claim 5
Dependent Claim
21 words
An apparatus according to claim 1, wherein said processing means performs conversion of spatial frequency characteristics of the input image data.
Claim 6
Dependent Claim
66 words
An apparatus according to claim 1, wherein said output means includes a plurality of injection ports for injecting an ink, and heat energy generating means, formed in correspondence with said plurality of injection ports, for causing a state change by ink heat, injecting the ink from each of said plurality of injection ports on the basis of the state change, and forming a flying liquid droplet.
Claim 7
Dependent Claim
31 words
An apparatus according to claim 1, wherein said output means includes means for forming a latent image on a photosensitive body and developing the latent image by using a recording agent.
Claim 8
Dependent Claim
15 words
An apparatus according to claim 1, wherein the first mode is a generation copy mode.
Claim 9
Dependent Claim
15 words
An apparatus according to claim 1, wherein the second mode is a normal copy mode.
Claim 10
Dependent Claim
55 words
An image processing method comprising the steps of: a) inputting image data; b) processing the input image data; c) outputting the processed image data; and d) selecting a first mode for performing steps a) to c) of the output image data or a second mode for performing steps a) to c) of other image data.
Claim 11
Dependent Claim
20 words
A method according to claim 10, wherein the image data is input by an image reader constituted by a CCD.
Claim 12
Dependent Claim
22 words
A method according to claim 10, wherein the step b) comprises the step of performing density correction of the input image data.
Claim 13
Dependent Claim
22 words
A method according to claim 10, wherein the step b) comprises the step of performing color correction of the input image data.
Claim 14
Dependent Claim
23 words
A method according to claim 10, wherein the step b) comprises the step of converting spatial frequency characteristics of the input image data.
Claim 15
Dependent Claim
15 words
A method according to claim 10, wherein the first mode is a generation copy mode.
Claim 16
Dependent Claim
15 words
A method according to claim 10, wherein the second mode is a normal copy mode.
Claim 17
Dependent Claim
92 words
An image processing apparatus comprising: a) input means for inputting image data; b) processing means for processing the image data input by the input means; c) output means for outputting the image data processed by the processing means; and d) a first mode for setting D₂ to satisfy condition D₁ < D₂ and a second mode for setting D₂ to satisfy condition D₁ ≃ D₂ where D₁ is a maximum recording density of the output means and D₂ is an original density corresponding to a maximum value of the output image data.
Claim 18
Dependent Claim
19 words
An apparatus according to claim 17, wherein said input means is an image reader constituted by a CCD sensor.
Claim 19
Dependent Claim
18 words
An apparatus according to claim 17, wherein said processing means performs density correction of the input image data.
Claim 20
Dependent Claim
18 words
An apparatus according to claim 17, wherein said processing means performs color correction of the input image data.
Claim 21
Dependent Claim
21 words
An apparatus according to claim 17, wherein said processing means performs conversion of spatial frequency characteristics of the input image data.
Claim 22
Dependent Claim
66 words
An apparatus according to claim 17, wherein said output means includes a plurality of injection ports for injecting an ink, and heat energy generating means, formed in correspondence with said plurality of injection ports, for causing a state change by ink heat, injecting the ink from each of said plurality of injection ports on the basis of the state change, and forming a flying liquid droplet.
Claim 23
Dependent Claim
31 words
An apparatus according to claim 17, wherein said output means includes means for forming a latent image on a photosensitive body and developing the latent image by using a recording agent.
Claim 24
Dependent Claim
15 words
An apparatus according to claim 17, wherein the first mode is a generation copy mode.
Claim 25
Dependent Claim
15 words
An apparatus according to claim 17, wherein the second mode is a normal copy mode.
Claim 26
Dependent Claim
13 words
An apparatus according to claim 17, wherein D₁ is not more than 1.8.
Claim 27
Dependent Claim
89 words
An image processing apparatus comprising: a) input mens for inputting image data; b) processing means for processing the image data input by the input means; c) output means for outputting the image data processed by the processing means; and d) memory means for storing at least a first parameter for optimizing a resolution to obtain first output image data from first input image data and a second parameter for optimizing a resolution to obtain second output image data from the first output image data as second input image data.
Claim 28
Dependent Claim
19 words
An apparatus according to claim 27, wherein said input means is an image reader constituted by a CCD sensor.
Claim 29
Dependent Claim
18 words
An apparatus according to claim 27, wherein said processing means performs density correction of the input image data.
Claim 30
Dependent Claim
18 words
An apparatus according to claim 27, wherein said processing means performs color correction of the input image data.
Claim 31
Dependent Claim
21 words
An apparatus according to claim 27, wherein said processing means performs conversion of spatial frequency characteristics of the input image data.
Claim 32
Dependent Claim
66 words
An apparatus according to claim 27, wherein said output means includes a plurality of injection ports for injecting an ink, and heat energy generating means, formed in correspondence with said plurality of injection ports, for causing a state change by ink heat, injecting the ink from each of said plurality of injection ports on the basis of the state change, and forming a flying liquid droplet.
Claim 33
Dependent Claim
31 words
An apparatus according to claim 27, wherein said output means includes means for forming a latent image on a photosensitive body and developing the latent image by using a recording agent.
Claim 34
Dependent Claim
15 words
An apparatus according to claim 27, wherein the first mode is a generation copy mode.
Claim 35
Dependent Claim
15 words
An apparatus according to claim 27, wherein the second mode is a normal copy mode.
Claim 36
Dependent Claim
117 words
An image processing apparatus comprising: a) input means for inputting image data; b) processing means for processing the image data input by the input means; c) output means for outputting the image data processed by the processing means; and d) memory means for storing a parameter for minimizing a color difference between first input image data and first output image data when the first output image data is to be obtained from the first input image data and a parameter for minimizing a color difference between second input image data and second output image data when the second output image data is to be obtained from the first output image data as the second input image data.
Claim 37
Dependent Claim
19 words
An apparatus according to claim 36, wherein said input means is an image reader constituted by a CCD sensor.
Claim 38
Dependent Claim
18 words
An apparatus according to claim 36, wherein said processing means performs density correction of the input image data.
Claim 39
Dependent Claim
18 words
An apparatus according to claim 36, wherein said processing means performs color correction of the input image data.
Claim 40
Dependent Claim
21 words
An apparatus according to claim 36, wherein said processing means performs conversion of spatial frequency characteristics of the input image data.
Claim 41
Dependent Claim
66 words
An apparatus according to claim 36, wherein said output means includes a plurality of injection ports for injecting an ink, and heat energy generating means, formed in correspondence with said plurality of injection ports, for causing a state change by ink heat, injecting the ink from each of said plurality of injection ports on the basis of the state change, and forming a flying liquid droplet.
Claim 42
Dependent Claim
31 words
An apparatus according to claim 36, wherein said output means includes means for forming a latent image on a photosensitive body and developing the latent image by using a recording agent.
Claim 43
Dependent Claim
15 words
An apparatus according to claim 36, wherein the first mode is a generation copy mode.
Claim 44
Dependent Claim
15 words
An apparatus according to claim 36, wherein the second mode is a normal copy mode.
Claim 45
Dependent Claim
17 words
An apparatus according to claim 36, wherein the parameters are calculated by a method of least squares.
Claim 46
Dependent Claim
49 words
A copying apparatus comprising: a) processing means for processing input image data; b) mode selecting means for selecting a generation copy mode or a normal copy mode; and c) control means for controlling processing parameters by the processing means in accordance with a selection state of the selecting means.
Claim 47
Dependent Claim
18 words
An apparatus according to claim 46, wherein said processing means performs density correction of the input image data.
Claim 48
Dependent Claim
18 words
An apparatus according to claim 46, wherein said processing means performs color correction of the input image data.
Claim 49
Dependent Claim
21 words
An apparatus according to claim 46, wherein said processing means performs conversion of spatial frequency characteristics of the input image data.
Claim 50
Dependent Claim
15 words
An apparatus according to claim 46, wherein said mode selecting means can select other modes.
Claim 51
Dependent Claim
34 words
An apparatus according to claim 46, wherein the generation copy mode is a mode for causing said processing means to reprocess as input image data the image processed and output from said processing means.
References Cited (Backward Citations)
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