EP0421773A2
Expired / Lapsed
EP
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Image processing system
Assignee: Canon Inc
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Filing: 1990-10-04
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Granted: —
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Expires: 2010-10-04
Abstract
Abstract There is disclosed an image processing system having an input or output unit for entering or releasing video signal, and a scanner for reading an original image or a printer for printing the video signal, in which the aspect ratio of the image is converted at the entry or release of the video signal between the input or output unit and the scanner or the printer.
Inventors
- 👤 Masafumi Wataya
- 👤 Toshiyuki Yanaka
- 👤 Yushi Kaneko
- 👤 Yasutomo Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 03:19
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/00127; H04N1/00281; H04N1/00283; H04N1/00291; H04N1/00294; H04N1/04; H04N1/0402; H04N1/0417; H04N1/042; H04N1/0443; H04N1/40; H04N1/40068; H04N1/113; H04N1/1135; H04N1/12; H04N2201/00; H04N2201/0008; H04N2201/0065; H04N2201/0067; H04N2201/0068
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
70 words
An image processing system comprising: input or output means for entering image signal from outside or releasing image signal to outside; and scanner means for reading an original image or means for forming the image of supplied image signal; wherein the aspect ratio of image is converted at the entry or release of said image signal between said input or output means and said scanner means or image forming means.
Claim 2
Dependent Claim
70 words
An image processing system comprising: input or output means for entering image signal from outside or releasing image signal to outside; and scanner means for reading an original image or means for forming the image of supplied image signal; wherein the aspect ratio of image is converted at the entry or release of said image signal between said input or output means and said scanner means or image forming means.
Claim 3
Dependent Claim
27 words
A system according to claim 1, wherein the image signal entered by or released from said input or output means is image signal matching a broadcasting standard.
Claim 4
Dependent Claim
19 words
A system according to claim 2, wherein said image signal matching the broadcasting standard is high definition television signal.
Claim 5
Dependent Claim
25 words
A system according to claim 1, further comprising: a data amount conversion circuit provided between said outside and said scanner or said image forming means.
Claim 6
Dependent Claim
15 words
A system according to claim 1, wherein said image forming means is an electrophotographic printer.
Claim 7
Dependent Claim
14 words
A system according to claim 5, wherein said printer is a laser beam printer.
Claim 8
Dependent Claim
19 words
A system according to claim 4, wherein said data amount conversion circuit comprises a memory for storing image signal.
Claim 9
Dependent Claim
35 words
A system according to claim 7, wherein said data amount conversion circuit is adapted to convert the data amount by controlling the relation between the data writing into said memory and the data reading therefrom.
Claim 10
Dependent Claim
56 words
An image processing apparatus for converting the vertical-to-horizontal ratio of image signal matching the high definition television standard, comprising: a memory for storing said image signal supplied thereto; and means for converting the vertical-to-horizontal ratio of said image signal by controlling the writing of image signal into said memory or the reading of image signal therefrom.
Claim 11
Dependent Claim
56 words
An image processing apparatus for converting the vertical-to-horizontal ratio of image signal matching the high definition television standard, comprising: a memory for storing said image signal supplied thereto; and means for converting the vertical-to-horizontal ratio of said image signal by controlling the writing of image signal into said memory or the reading of image signal therefrom.
Claim 12
Dependent Claim
13 words
An apparatus according to claim 9, wherein said memory is a first-in-first-out memory.
Claim 13
Dependent Claim
21 words
An apparatus according to claim 9, further comprising: means for supplying a printer with image signal converted by said converting means.
Claim 14
Dependent Claim
30 words
An apparatus according to claim 9, wherein said converting means is adapted to convert the vertical-to-horizontal ratio of said image signal by skipping image signal for storage into said memory.
Claim 15
Dependent Claim
29 words
An apparatus according to claim 9, wherein said converting means is adapted to convert the vertical-to-horizontal ratio of said image signal by skipping image signal read from said memory.
Claim 16
Dependent Claim
16 words
An apparatus according to claim 9, wherein said high definition television standard is the BTA standard.
Claim 17
Independent Claim
66 words
An apparatus for forming an image of image signal supplied thereto, comprising: means for supplying image signal matching a broadcasting standard; and means for forming the image of the image signal supplied by said supplying means, said image forming means being adapted to effect image formation in such a manner that the aspect ratio of the image corresponding to said image signal assumes a predetermined state.
Claim 18
Independent Claim
66 words
An apparatus for forming an image of image signal supplied thereto, comprising: means for supplying image signal matching a broadcasting standard; and means for forming the image of the image signal supplied by said supplying means, said image forming means being adapted to effect image formation in such a manner that the aspect ratio of the image corresponding to said image signal assumes a predetermined state.
Claim 19
Dependent Claim
15 words
An apparatus according to claim 15, wherein said image forming means is an electro-photographic printer.
Claim 20
Dependent Claim
19 words
An apparatus according to claim 15, wherein said image signal matching the broadcasting standard is high definition television signal.
Claim 21
Dependent Claim
61 words
An apparatus according to claim 15, wherein said image signal matching the broadcasting standard has a vertical-to-horizontal ratio in each pixel not equal to 1 : 1, and said image forming means is adapted to effect image formation in such a manner that the image obtained from said image signal has a vertical-to-horizontal ratio of 1 : 1 in each pixel.
Claim 22
Dependent Claim
59 words
An apparatus according to claim 15, wherein said image forming means is adapted to effect image formation by scanning an image bearing member with a radiation, and to effect image formation in such a manner that the aspect ratio of the image obtained corresponding to said image signal assumes a predetermined state, by controlling the speed of said scanning.
Claim 23
Dependent Claim
69 words
An image reading apparatus comprising: converter means for reading an original image and converting the same into image signal; memory means for storing the image signal converted by said converter means; and means for releasing said stored image signal, as signal matching a broadcasting standard to the outside; wherein said converter means is adapted to release the signal matching the broadcasting standard by controlling the state of original reading.
Claim 24
Dependent Claim
69 words
An image reading apparatus comprising: converter means for reading an original image and converting the same into image signal; memory means for storing the image signal converted by said converter means; and means for releasing said stored image signal, as signal matching a broadcasting standard to the outside; wherein said converter means is adapted to release the signal matching the broadcasting standard by controlling the state of original reading.
Claim 25
Dependent Claim
26 words
An apparatus according to claim 20, wherein said converter means is adapted to release the signal matching the broadcasting standard, by controlling the image reading speed.
Claim 26
Dependent Claim
14 words
An apparatus according to claim 20, wherein said memory means is a frame memory.
Claim 27
Dependent Claim
18 words
An apparatus according to claim 20, wherein said signal matching the broadcasting standard is high definition television signal.
Claim 28
Dependent Claim
22 words
An apparatus according to claim 20, further comprising: means for forming an image of the image signal supplied from said converter means.
Claim 29
Dependent Claim
61 words
Printer for printing an image having a predetermined aspect ratio, characterised in that the image signal is calculated to give the predetermined aspect ratio with pixel elements of a first aspect ratio, and the printer has pixel elements of a different aspect ratio, and is arranged to process the image signal to produce a printed image approximating the predetermined aspect ratio.
Claim 30
Dependent Claim
61 words
Printer for printing an image having a predetermined aspect ratio, characterised in that the image signal is calculated to give the predetermined aspect ratio with pixel elements of a first aspect ratio, and the printer has pixel elements of a different aspect ratio, and is arranged to process the image signal to produce a printed image approximating the predetermined aspect ratio.
Claim 31
Dependent Claim
23 words
A printer capable of printing an image from a high definition television signal, the printed image approximating the aspect ratio of the signal.
Claim 32
Dependent Claim
23 words
A printer capable of printing an image from a high definition television signal, the printed image approximating the aspect ratio of the signal.
Claim 33
Dependent Claim
14 words
An image printer including image conversion means arranged to change an image aspect ratio.
Claim 34
Dependent Claim
14 words
An image printer including image conversion means arranged to change an image aspect ratio.
Claim 35
Dependent Claim
30 words
A printer control circuit comprising a first in - first out memory and control means for controlling the timing and frequency of data written into and out of said memory.
Claim 36
Dependent Claim
30 words
A printer control circuit comprising a first in - first out memory and control means for controlling the timing and frequency of data written into and out of said memory.
Claim 37
Dependent Claim
24 words
An aspect ratio conversion circuit for altering the aspect ratio of an image signal, including means to prevent image distortion resulting from said conversion.
Claim 38
Dependent Claim
24 words
An aspect ratio conversion circuit for altering the aspect ratio of an image signal, including means to prevent image distortion resulting from said conversion.
Claim 39
Dependent Claim
15 words
Circuit according to claim 29 including smoothing means for reducing discontinuities resulting from said conversion.
References Cited (Backward Citations)
No citation records indexed.
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