US4864413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image processing system having a selective magnification function
Assignee: Ricoh Co Ltd
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Filing: 1988-01-29
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Granted: 1989-09-05
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Expires: 2008-01-29
Abstract
Abstract An image processing system includes a density magnification processing unit for taking an average in density of two adjacent image data only at a point of change in the main scanning direction in a size enlargement mode. Thus, the density variation in the main scanning direction is made smoother.
Inventors
- 👤 Tomio Sasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:51
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/387; H04N1/393; H04N1/3935; G; G06; G06T; G06T3/00; G06T3/40; H04N1/04; H04N1/19; H04N1/191; H04N1/192; H04N1/193
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
93 words
An image processing system comprising: supplying means for supplying signification data; storing means for storing image data; read/write controlling means for controlling a read/write operation of said storing means using said magnification data supplied from said supplying means as an address clock; averaging means for averaging magnified data in a predetermined manner to produce an average data during a size enlargement mode; and selecting means for selecting either one of said averaged data and a corresponding non-magnified data in accordance with a clock derived from the magnification data obtained from said supplying means.
Claim 2
Dependent Claim
93 words
An image processing system comprising: supplying means for supplying signification data; storing means for storing image data; read/write controlling means for controlling a read/write operation of said storing means using said magnification data supplied from said supplying means as an address clock; averaging means for averaging magnified data in a predetermined manner to produce an average data during a size enlargement mode; and selecting means for selecting either one of said averaged data and a corresponding non-magnified data in accordance with a clock derived from the magnification data obtained from said supplying means.
Claim 3
Dependent Claim
48 words
The system of claim 1, further comprising: a first plurality of image sensors for optically reading an original to produce image data line by line, said first plurality of image sensors reading a line of said original at the same time in a forward direction along said line.
Claim 4
Dependent Claim
35 words
The system of claim 1, wherein said storing means includes a pair of image memories, each storing either a left-half or right-half of said image data of one line as divided at a center thereof.
References Cited (Backward Citations)
US4417805A
Cited
US4679096A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-04 | 1993-03-06 | 1993-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-04 | 1997-03-06 | 1997-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-04 | 2001-03-06 | 2001-09-05 | $7700.00 | Window Closed / Lapsed |