Patent US5022088A successfully refreshed from Google Patents.
US5022088A
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US
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Image processing apparatus with provision for memory operation
Assignee: Canon Inc
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Filing: 1990-09-10
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Granted: 1991-06-04
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Expires: 2010-09-10
Abstract
Abstract There is disclosed an image processing apparatus for electrically handling image information, particularly in compressed form, in which the efficiency of memory utilization is improved by storing information of plural pages in successive manner in a memory. Provision is made for ensuring that, if insufficient space is left in the memory for storage of another page of compressed image data, reading of the page in question is interrupted. Once there is again sufficient availability in the memory, the page is re-read, and the read data is compressed and stored.
Inventors
- 👤 Katsutoshi Hisada
- 👤 Hiroshi Nobuta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:07
CPC Classifications
G; G06; G06T; G06T1/00; G06T1/60; H; H04; H04N; H04N1/00; H04N1/32; H04N1/32358; H04N1/387; H04N1/3871; H04N2201/00; H04N2201/32; H04N2201/3285; H04N2201/3288; H04N2201/3298
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
223 words
An image processing apparatus comprising: means for sequentially reading a plurality of pages of original images and sequentially generating image data representing each of the original images; means for compressing the image data so as to form compressed image data, the amount of a page of compressed image data being variable; memory means capable of storing a plurality of such pages of compressed image data; and control means for controlling the reading operation of said reading means and the storage operation of said memory means in such a manner that compressed image data of a succeeding page is stored in a memory area following the memory area in which the compressed image data of a preceding page is stored, wherein said control means is adapted to interrupt storage of the compressed image data into said memory means in a case in which said memory means becomes unavailable for the storage of the compressed image data in the course of the storage of a page of the compressed image data, and wherein said control means causes reading of the same page of original image to be performed again and causes the storage of the compressed image data of the same page in the same memory area to be performed again when said memory means becomes available for the storage of the compressed image data.
Claim 2
Dependent Claim
223 words
An image processing apparatus comprising: means for sequentially reading a plurality of pages of original images and sequentially generating image data representing each of the original images; means for compressing the image data so as to form compressed image data, the amount of a page of compressed image data being variable; memory means capable of storing a plurality of such pages of compressed image data; and control means for controlling the reading operation of said reading means and the storage operation of said memory means in such a manner that compressed image data of a succeeding page is stored in a memory area following the memory area in which the compressed image data of a preceding page is stored, wherein said control means is adapted to interrupt storage of the compressed image data into said memory means in a case in which said memory means becomes unavailable for the storage of the compressed image data in the course of the storage of a page of the compressed image data, and wherein said control means causes reading of the same page of original image to be performed again and causes the storage of the compressed image data of the same page in the same memory area to be performed again when said memory means becomes available for the storage of the compressed image data.
Claim 3
Dependent Claim
51 words
An image processing apparatus according to claim 1, wherein said control means is adapted to determine a memory start address for the storage of the compressed image data of the succeeding page according to a memory end address of the compressed image data of the preceding page in such memory means.
Claim 4
Dependent Claim
33 words
An image processing apparatus according to claim 1, wherein said read out of compressed image data from one area of the memory can be performed simultaneously with image data storage in another area.
Claim 5
Dependent Claim
50 words
An image processing apparatus according to claim 1, the arrangement being such that when image data has been stored in the whole of the memory, further image data can be stored in an area of the memory if image data previously stored in that area has been read out therefrom.
Claim 6
Dependent Claim
38 words
An image processing apparatus according to claim 1, wherein said control means is adapted to inhibit the storage of the compressed image data into an area of said memory means in which compressed image data are already stored.
Claim 7
Dependent Claim
30 words
An image processing apparatus according to claim 1, wherein the read-out of compressed image data from said memory means is conducted in the order of storage into said memory means.
Claim 8
Dependent Claim
40 words
An image processing apparatus according to claim 1, wherein said control means is adapted to interrupt the storage of the compressed image data in the case of an overflow in said memory means in the course of image data storage.
Claim 9
Dependent Claim
158 words
An image processing apparatus comprising: means for entering data containing compressed image data representing an original image, delimiter data representing delimitation of a line of the compressed image data, and dummy data added between the compressed image data and the delimiter data for adjustment of data quantity between the delimiter data; memory means for storing compressed image data; first detecting means for detecting said dummy data contained in the entered data; second detecting means for detecting said delimiter data contained in the entered data; and control means for controlling the storage operation of said memory means, wherein said control means inhibits the data storage into said memory means in accordance with a detection signal from said first detecting means, and enables the data storage in said memory means in accordance with a detection signal from said second detecting means, so that said memory means stores the compressed image data contained in the data entered by said entering means.
Claim 10
Dependent Claim
158 words
An image processing apparatus comprising: means for entering data containing compressed image data representing an original image, delimiter data representing delimitation of a line of the compressed image data, and dummy data added between the compressed image data and the delimiter data for adjustment of data quantity between the delimiter data; memory means for storing compressed image data; first detecting means for detecting said dummy data contained in the entered data; second detecting means for detecting said delimiter data contained in the entered data; and control means for controlling the storage operation of said memory means, wherein said control means inhibits the data storage into said memory means in accordance with a detection signal from said first detecting means, and enables the data storage in said memory means in accordance with a detection signal from said second detecting means, so that said memory means stores the compressed image data contained in the data entered by said entering means.
Claim 11
Dependent Claim
28 words
An image processing apparatus according to claim 8, wherein said first detecting means is adapted to detect the dummy data from the state of continuation of predetermined signals.
Claim 12
Dependent Claim
33 words
An image processing apparatus according to claim 8, wherein said entering means is adapted to enter compressed image data obtained by compressing image data which are obtained by photoelectrically reading an original image.
Claim 13
Dependent Claim
27 words
An image processing apparatus according to claim 8, wherein said control means enables the data storage after the detection of said delimiter data into said memory means.
Claim 14
Dependent Claim
24 words
An image processing apparatus according to claim 8, wherein said memory means is adapted to store a plurality of pages of compressed image data.
Claim 15
Dependent Claim
25 words
An image processing apparatus according to claim 8, wherein continuation of said delimiter data represents completion of entry of a page of the image data.
Claim 16
Dependent Claim
182 words
A image processing apparatus comprising: means for sequentially generating image data representing a plurality of pages of original images; means for compressing the image data to form compressed image data, the amount of a page of compressed image data being variable; memory means capable of storing a plurality of such pages of compressed image data; and control means for controlling storage operation of said memory means in such a manner that compressed image data of a succeeding page is stored in a memory area following the memory area in which the compressed image data of a preceding page is stored, wherein said control means is adapted to interrupt storage of the compressed image in said memory means in a case in which said memory means becomes unavailable for storage of the compressed image data in the course of the storage of a page of the compressed image data, and thereafter said control means causes the storage of the compressed image data in said memory means to be performed when said memory means becomes available for the storage of the compressed image data.
Claim 17
Dependent Claim
182 words
A image processing apparatus comprising: means for sequentially generating image data representing a plurality of pages of original images; means for compressing the image data to form compressed image data, the amount of a page of compressed image data being variable; memory means capable of storing a plurality of such pages of compressed image data; and control means for controlling storage operation of said memory means in such a manner that compressed image data of a succeeding page is stored in a memory area following the memory area in which the compressed image data of a preceding page is stored, wherein said control means is adapted to interrupt storage of the compressed image in said memory means in a case in which said memory means becomes unavailable for storage of the compressed image data in the course of the storage of a page of the compressed image data, and thereafter said control means causes the storage of the compressed image data in said memory means to be performed when said memory means becomes available for the storage of the compressed image data.
Claim 18
Dependent Claim
51 words
An image processing apparatus according to claim 14, wherein said control means is adapted to determine a memory start address for the storage of the compressed image data of the succeeding page according to a memory end address of the compressed image data of the preceding page in such memory means.
Claim 19
Dependent Claim
36 words
An image processing apparatus according to claim 14, wherein read-out of compressed image data from one area of said memory means can be performed simultaneously with image data storage in another area of said memory means.
Claim 20
Dependent Claim
47 words
An image processing apparatus according to claim 14, wherein, when image data has been stored in all of said memory means, further image data can be stored in an area of said memory means once image data previously stored in that area has been read out therefrom.
Claim 21
Dependent Claim
37 words
An image processing apparatus according to claim 14, wherein said control means is adapted to inhibit storage of the compressed image data into an area of said memory means in which compressed image data are already stored.
Claim 22
Dependent Claim
29 words
An image processing apparatus according to claim 14, wherein read-out of compressed image data from said memory means is conducted in the order of storage into said memory means.
Claim 23
Dependent Claim
39 words
An image processing apparatus according to claim 14, wherein said control means is adapted to interrupt storage of the compressed image data in the case of an overflow in said memory means in the course of image data storage.
References Cited (Backward Citations)
US3800080A
Cited
DE2348452A1
Cited
GB1479774A
Cited
US4302775A
Cited
US4410916A
Cited
US4357638A
Cited
DE3039902A1
Cited
DE3137903A1
Cited
US4413285A
Cited
US4441208A
Cited
JPS5781766A
Cited
JPS58212252A
Cited
US4507760A
Cited
EP0117871A1
Cited
US4646160A
Cited
SU1096675A1
Cited
USPTO Annuity & Maintenance Windows
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| 3.5 Years (Year 4) | 1994-06-03 | 1994-12-03 | 1995-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-03 | 1998-12-03 | 1999-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-03 | 2002-12-03 | 2003-06-04 | $7700.00 | Window Closed / Lapsed |