US5581613A
Expired / Lapsed
US
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Color image processing apparatus and method
Assignee: Canon Inc
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Filing: 1994-07-05
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Granted: 1996-12-03
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Expires: 2014-07-05
Abstract
Abstract An image processing system has an external image processing apparatus and an image input/output apparatus. One of the apparatuses acts as a transmission-side apparatus and the other apparatus acts as a reception-side apparatus. The transmission-side apparatus transmits image data and includes a reception device for receiving an encryption instruction from an apparatus which receives image data, and an output device for encrypting the image data on the basis of the encryption instruction and outputting the encrypted data to the apparatus at a reception side. The reception-side apparatus receives image data and includes a transmitting device for transmitting the encryption instruction, and a decrypting device for decrypting the encrypted data on the basis of the encryption instruction.
Inventors
- 👤 Nao Nagashima
- 👤 Yasumichi Suzuki
- 👤 Mitsuru Kurita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:22
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/44; H04N1/4406; H04N1/00838; H04N1/0084; H04N1/4426; H04N1/448; H04N1/4486
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
125 words
A color copying apparatus comprising: a first image processing unit comprising: image reading means for reading an original image and converting the read image into an image signal, and encrypting means for encrypting the image signal on the basis of information concerning encryption; a second image processing unit comprising: decrypting means for decrypting the encrypted signal from said encrypting means on the basis of the information concerning encryption, and image forming means for forming at least one image based on a signal from said decrypting means; and instructing means for instructing a coupled start of activation of said image reading means and said image forming means and communication of the information concerning encryption between said first image processing means and said second image processing means.
Claim 2
Dependent Claim
125 words
A color copying apparatus comprising: a first image processing unit comprising: image reading means for reading an original image and converting the read image into an image signal, and encrypting means for encrypting the image signal on the basis of information concerning encryption; a second image processing unit comprising: decrypting means for decrypting the encrypted signal from said encrypting means on the basis of the information concerning encryption, and image forming means for forming at least one image based on a signal from said decrypting means; and instructing means for instructing a coupled start of activation of said image reading means and said image forming means and communication of the information concerning encryption between said first image processing means and said second image processing means.
Claim 3
Dependent Claim
148 words
A color copying apparatus comprising: a first image processing unit comprising: color image reading means for reading an original image frame-sequentially for a plural number of color developing agents for different colors and for converting the read image into a color image signal, and encrypting means for encrypting the color image signal on the basis of information concerning encryption; and a second image processing unit comprising: decrypting means for decrypting the encrypted signal from said encrypting means on the basis of the information concerning encryption, and color image forming means for forming a color image frame-sequentially according to the color developing agents for different colors on the basis of a color image signal from said decrypting means, wherein the information concerning encryption is transmitted between said first image processing unit and said second image processing unit in accordance with the frame-sequential reading of said color image reading means.
Claim 4
Dependent Claim
148 words
A color copying apparatus comprising: a first image processing unit comprising: color image reading means for reading an original image frame-sequentially for a plural number of color developing agents for different colors and for converting the read image into a color image signal, and encrypting means for encrypting the color image signal on the basis of information concerning encryption; and a second image processing unit comprising: decrypting means for decrypting the encrypted signal from said encrypting means on the basis of the information concerning encryption, and color image forming means for forming a color image frame-sequentially according to the color developing agents for different colors on the basis of a color image signal from said decrypting means, wherein the information concerning encryption is transmitted between said first image processing unit and said second image processing unit in accordance with the frame-sequential reading of said color image reading means.
Claim 5
Dependent Claim
17 words
The color image forming apparatus according to claim 2, wherein said encryption means utilizes a look-up table.
Claim 6
Dependent Claim
18 words
The color image forming apparatus according to claim 2, wherein said encryption instruction is determined by random numbers.
Claim 7
Dependent Claim
21 words
The color image forming apparatus according to claim 2, wherein said first image processing unit comprises a color image reading apparatus.
Claim 8
Dependent Claim
21 words
The color image forming apparatus according to claim 2, wherein said second image processing unit comprises a color image forming apparatus.
Claim 9
Dependent Claim
20 words
The color image forming apparatus according to claim 2, wherein said color developing agents correspond to yellow, magenta and cyan.
Claim 10
Dependent Claim
153 words
A color image processing apparatus comprising: a first image processing unit comprising: color image reading means for reading an original image and for converting the read image into a color image signal, and encrypting means for encrypting the color image signal on the basis of an encryption instruction; a second image processing unit comprising: decrypting means for decrypting the encrypted signal from said encrypting means on the basis of the encryption instruction, and signal processing means for performing a predetermined image processing on a signal from said decrypting means based on the encryption instruction; control means, in said first and second image processing units, for substantially deactivating operation of said encrypting means and said decrypting means; and detecting means for detecting disconnection of said first and second image processing units, wherein said control means activates said decrypting means when said detecting means detects that said first and second image processing units are disconnected.
Claim 11
Dependent Claim
153 words
A color image processing apparatus comprising: a first image processing unit comprising: color image reading means for reading an original image and for converting the read image into a color image signal, and encrypting means for encrypting the color image signal on the basis of an encryption instruction; a second image processing unit comprising: decrypting means for decrypting the encrypted signal from said encrypting means on the basis of the encryption instruction, and signal processing means for performing a predetermined image processing on a signal from said decrypting means based on the encryption instruction; control means, in said first and second image processing units, for substantially deactivating operation of said encrypting means and said decrypting means; and detecting means for detecting disconnection of said first and second image processing units, wherein said control means activates said decrypting means when said detecting means detects that said first and second image processing units are disconnected.
Claim 12
Dependent Claim
26 words
The color Image processing apparatus according to claim 8, wherein said control means further comprises a display means for indicating the state of said control means.
Claim 13
Dependent Claim
17 words
The color image processing apparatus according to claim 8, wherein said encryption means utilizes a look-up table.
Claim 14
Dependent Claim
18 words
The color image forming apparatus according to claim 8, wherein said encryption instruction is determined by random numbers.
Claim 15
Dependent Claim
21 words
The color image forming apparatus according to claim 8 wherein said first image processing unit comprises a color image reading apparatus.
Claim 16
Dependent Claim
21 words
The color image forming apparatus according to claim 8, wherein said second image processing unit comprises a color image forming apparatus.
Claim 17
Dependent Claim
123 words
A color image reading apparatus for a copying apparatus connected to an external image processing apparatus, said color image reading apparatus comprising: original reading means for reading a color image from an original and for converting the color image read by said original reading means into a color image signal; encrypting means for encrypting the color image signal converted by said original reading means in accordance with data about an encryption method; and communicating means for communicating the color image signal encrypted by said encrypting means and the data about the encryption method between said color image reading apparatus and the external image processing apparatus, said communicating means communicating the data about the encryption method at a timing corresponding to a start-reading instruction.
Claim 18
Dependent Claim
123 words
A color image reading apparatus for a copying apparatus connected to an external image processing apparatus, said color image reading apparatus comprising: original reading means for reading a color image from an original and for converting the color image read by said original reading means into a color image signal; encrypting means for encrypting the color image signal converted by said original reading means in accordance with data about an encryption method; and communicating means for communicating the color image signal encrypted by said encrypting means and the data about the encryption method between said color image reading apparatus and the external image processing apparatus, said communicating means communicating the data about the encryption method at a timing corresponding to a start-reading instruction.
Claim 19
Dependent Claim
20 words
The color image reading apparatus according to claim 14, wherein the external image processing apparatus comprises an image storing apparatus.
Claim 20
Dependent Claim
20 words
The color image reading apparatus according to claim 14, wherein the copying apparatus generates the data about the encryption method.
Claim 21
Dependent Claim
17 words
The color image reading apparatus according to claim 14, wherein said encrypting means comprises a look-up table.
Claim 22
Dependent Claim
23 words
The color image reading apparatus according to claim 14, wherein the external image processing apparatus transmits the start-reading instruction to the copying apparatus.
Claim 23
Dependent Claim
102 words
A color image forming apparatus for a copying apparatus connected to an external image processing apparatus, said color image forming apparatus comprising: communicating means for communicating an encrypted color image signal and data about an encryption method between said color image forming apparatus and the external image processing apparatus, said communicating means communicating the data about the encryption method at a timing corresponding to an image forming instruction; decrypting means for decrypting the encrypted color image signal received from said communicating means; and image forming means for forming an image based on the encrypted color image signal decrypted by said decrypting means.
Claim 24
Dependent Claim
102 words
A color image forming apparatus for a copying apparatus connected to an external image processing apparatus, said color image forming apparatus comprising: communicating means for communicating an encrypted color image signal and data about an encryption method between said color image forming apparatus and the external image processing apparatus, said communicating means communicating the data about the encryption method at a timing corresponding to an image forming instruction; decrypting means for decrypting the encrypted color image signal received from said communicating means; and image forming means for forming an image based on the encrypted color image signal decrypted by said decrypting means.
Claim 25
Dependent Claim
20 words
The color image forming apparatus according to claim 19, wherein the external image processing apparatus comprises an image storing apparatus.
Claim 26
Dependent Claim
22 words
The color image forming apparatus according to claim 19, wherein the external image processing apparatus generates the data about the encryption method.
Claim 27
Dependent Claim
17 words
The color image forming apparatus according to claim 19, wherein said encrypting means comprises a look-up table.
Claim 28
Dependent Claim
24 words
The color image forming apparatus according to claim 19, wherein the external image processing apparatus transmits the image forming instruction to the copying apparatus.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-12-03 | 2000-06-03 | 2000-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-12-03 | 2004-06-03 | 2004-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-12-03 | 2008-06-03 | 2008-12-03 | $7700.00 | Window Closed / Lapsed |