US4751568A
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Image information reading apparatus which discriminates between colors
Assignee: Toshiba Corp
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Filing: 1986-06-25
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Granted: 1988-06-14
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Expires: 2006-06-25
Abstract
Abstract A picture image is scanned and identified as white and black portions according to the tone of the picture image to form a binary picture image signal. Picture images of tones other than white and black are detected and the detected picture image signals are modulated in accordance with predetermined modulation patterns. The modulated picture image signals are synthesized with the binary picture image signal.
Inventors
- 👤 Motoharu Mizutani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:18
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/40012; H04N1/405; H04N1/4051
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
103 words
An image reading apparatus for reading a picture image on a medium to produce plural binary image signals, said binary image signals each being representative of a specific color when reproduced, comprising: means for producing a first binary image signal by scanning said medium; means for detecting the specific color contained in said picture image by scanning said medium and outputting a second binary image signal corresponding to the specific color of said picture image; means for modulating said second binary image signal; and means for synthesizing an output signal from said first binary image signal and said modulated second binary image signal.
Claim 2
Dependent Claim
103 words
An image reading apparatus for reading a picture image on a medium to produce plural binary image signals, said binary image signals each being representative of a specific color when reproduced, comprising: means for producing a first binary image signal by scanning said medium; means for detecting the specific color contained in said picture image by scanning said medium and outputting a second binary image signal corresponding to the specific color of said picture image; means for modulating said second binary image signal; and means for synthesizing an output signal from said first binary image signal and said modulated second binary image signal.
Claim 3
Dependent Claim
29 words
The image reading apparatus according to claim 1 wherein said detecting means detects a picture image of one color other than black or white contained in said picture image.
Claim 4
Dependent Claim
30 words
The image reading apparatus according to claim 1 wherein said detecting means detects picture images of a plurality of colors other than black or white contained in said picture image.
Claim 5
Dependent Claim
37 words
The image reading apparatus according to claim 1 wherein said detecting means detects a picture image of colors contained in said picture image other than white and black according to a balance of cyan, yellow and magenta.
Claim 6
Dependent Claim
44 words
The image reading apparatus according to claim 1 wherein said modulating means comprises pattern generating means for generating a predetermined modulation pattern, and further including a logic product means for producing a logic product of said second binary image signal and said modulation pattern.
Claim 7
Dependent Claim
35 words
The image reading apparatus according to claim 1 wherein said synthesizing means comprises logic sum means responsive to said first binary image signal and said modulated second binary image signal to produce the output signal.
Claim 8
Dependent Claim
41 words
The image reading apparatus according to claim 1 wherein said detecting means detects a picture image of a plurality of colors contained in said picure image, and outputs a plurality of second binary image signals corresponding to said plurality of colors.
Claim 9
Dependent Claim
24 words
The image reading apparatus according to claim 7 wherein said modulating means modulates said plurality of second binary image signals with different modulating patterns.
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) | 1991-06-14 | 1991-12-14 | 1992-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-14 | 1995-12-14 | 1996-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-14 | 1999-12-14 | 2000-06-14 | $7700.00 | Window Closed / Lapsed |