US4698688A
Expired / Lapsed
US
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Image processing system
Assignee: Canon Inc
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Filing: 1985-07-08
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Granted: 1987-10-06
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Expires: 2005-07-08
Abstract
Abstract An image processing system includes an image reader unit which reads an image so as to generate it as 4-bit data, and a communication unit for converting the 4-bit data into 6-bit data. The communication unit forms the 6-bit data in such a manner that an upper 2-bit component of the 4-bit data is added to the 4-bit data as a lower 2-bit component of the 6-bit data. The resultant 6-bit data is supplied to a binary printer and is subjected to halftone processing and printing. Image signals having different bit numbers can be processed and excellent image reproduction can be achieved with a simple system.
Inventors
- 👤 Hiroshi Ochi
- 👤 Nobuji Tetsutani
- 👤 Tetsuji Yamamoto
- 👤 Shigehisa Kitani
- 👤 Asao Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:09
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H03; H03M; H03M7/00; H03M7/02; H03M7/04; H04N1/405; H04N1/4055; H04N1/4057
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
65 words
An image processing system comprising: means for generating N-bit image data; and means for converting the N-bit image data generated from said generating means into M-bit (M>N) image data, wherein said converting means forms the M-bit image data in such a manner that an upper (M-N) bit component of the N-bit image data is added to the N-bit image data as a lower bit component.
Claim 2
Dependent Claim
65 words
An image processing system comprising: means for generating N-bit image data; and means for converting the N-bit image data generated from said generating means into M-bit (M>N) image data, wherein said converting means forms the M-bit image data in such a manner that an upper (M-N) bit component of the N-bit image data is added to the N-bit image data as a lower bit component.
Claim 3
Dependent Claim
55 words
A system according to claim 1, further comprising first image reader means for reading an image so as to supply the read image as M-bit image data, and means for selecting at least one of the M-bit image data generated from said first reader means and the M-bit image data generated from said converting means.
Claim 4
Dependent Claim
47 words
A system according to claim 1, wherein said generating means comprises second image reader means for reading an image so as to supply the read image as the N-bit image data, and transferring means for transferring the N-bit image data generated from said second image reader means.
Claim 5
Dependent Claim
35 words
A system according to claim 1, further comprising binary data generating means for halftone processing the M-bit image data generated from said converting means so as to generate the M-bit image data as binary data.
Claim 6
Dependent Claim
27 words
A system according to claim 4, further comprising printing means for performing image reproduction in accordance with the binary data generated from said binary data generating means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-05 | 1991-04-06 | 1991-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-05 | 1995-04-06 | 1995-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-05 | 1999-04-06 | 1999-10-06 | $7700.00 | Window Closed / Lapsed |