US5488485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image reading apparatus
Assignee: Canon Inc
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Filing: 1995-04-03
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Granted: 1996-01-30
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Expires: 2015-04-03
Abstract
Abstract An image reading apparatus includes image sensors for reading images on the front and back faces of an original, a buffer RAM for storing first image data representing the image on the front face of the original, and second image data representing the image on the back face of the original, which data are output from the image sensors, and an output circuit for selecting and outputting one of the first and second image data read out from the buffer RAM.
Inventors
- 👤 Masami Amemiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:28
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/32; H04N1/32358; H04N1/3248; H04N1/00795; H04N1/04; H04N1/0402; H04N1/203; H04N1/2032; H04N2201/00; H04N2201/32; H04N2201/3285; H04N2201/3288
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
203 words
An image processing apparatus comprising: first input means for inputting first image data representing an image on a front face of an original line by line; second input means for inputting second image data representing an image on a back face of the original line by line; mixing means for mixing the first image data and the second image data line by line and for outputting mixed image data line by line; instruction means for instructing one of the front and back faces of the original; selection means for selecting one of the first and second image data among the mixed image data output from said mixing means line by line in accordance with the instruction by said instruction means; temporary memory means for temporarily storing the mixed image data output from said mixing means; compression means for compressing the mixed image data output from said mixing means, wherein said temporary memory means stores the mixed image data compressed by said compression means; and expansion means for expanding the compressed mixed image data read out from said temporary memory means, wherein said selection means selects one of the first and second image data among the mixed image data expanded by said expansion means.
Claim 2
Dependent Claim
203 words
An image processing apparatus comprising: first input means for inputting first image data representing an image on a front face of an original line by line; second input means for inputting second image data representing an image on a back face of the original line by line; mixing means for mixing the first image data and the second image data line by line and for outputting mixed image data line by line; instruction means for instructing one of the front and back faces of the original; selection means for selecting one of the first and second image data among the mixed image data output from said mixing means line by line in accordance with the instruction by said instruction means; temporary memory means for temporarily storing the mixed image data output from said mixing means; compression means for compressing the mixed image data output from said mixing means, wherein said temporary memory means stores the mixed image data compressed by said compression means; and expansion means for expanding the compressed mixed image data read out from said temporary memory means, wherein said selection means selects one of the first and second image data among the mixed image data expanded by said expansion means.
Claim 3
Dependent Claim
24 words
An apparatus according to claim 1, wherein said compression mean compresses one of the first and second image data selected by said selecting means.
Claim 4
Dependent Claim
20 words
An apparatus according the claim 1, further comprising storage means for storing the image data selected by said selecting means.
Claim 5
Dependent Claim
44 words
An apparatus according to claim 1, wherein said first and second input means comprise first reading means for reading the image on the front face of the original and second reading means for reading the image on the back face of the original, respectively.
Claim 6
Dependent Claim
141 words
An image processing apparatus comprising: first reading means for reading an image on a front face of an original and for supplying first image data line by line; second reading means for reading an image on a back face of the original and for supplying second image data line by line; mixing means for mixing the first image data and the second image data and for outputting mixed image data line by line; compression means for compressing the mixed image data line by line; temporary memory means for temporarily storing the mixed image data compressed by said compression means; expansion means for expanding the compressed mixed image data read out from said temporary memory means line by line; and selecting means for selecting one of the first and second image data among the mixed image data expanded by said expansion means.
Claim 7
Dependent Claim
141 words
An image processing apparatus comprising: first reading means for reading an image on a front face of an original and for supplying first image data line by line; second reading means for reading an image on a back face of the original and for supplying second image data line by line; mixing means for mixing the first image data and the second image data and for outputting mixed image data line by line; compression means for compressing the mixed image data line by line; temporary memory means for temporarily storing the mixed image data compressed by said compression means; expansion means for expanding the compressed mixed image data read out from said temporary memory means line by line; and selecting means for selecting one of the first and second image data among the mixed image data expanded by said expansion means.
Claim 8
Dependent Claim
26 words
An apparatus according to claim 5, wherein said first and second reading means simultaneously read the images on the front and back faces of the original.
Claim 9
Dependent Claim
24 words
An apparatus according to claim 5, wherein said compression means compresses one of the first and second image data selected by said selecting means.
Claim 10
Dependent Claim
44 words
An apparatus according to claim 5, further comprising instruction means for instructing one of the front and back faces of the original, wherein said selecting means elects one of the first and second image data in accordance with the instruction by said instruction means.
Claim 11
Dependent Claim
20 words
An apparatus according to claim 5, further comprising storage means for storing the image data selected by said selecting means.
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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) | 1999-01-29 | 1999-07-31 | 2000-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-29 | 2003-07-31 | 2004-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-29 | 2007-07-31 | 2008-01-30 | $7700.00 | Window Closed / Lapsed |