US5652626A
Expired / Lapsed
US
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Image processing apparatus using pattern generating circuits to process a color image
Assignee: Toshiba Corp
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Filing: 1994-09-02
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Granted: 1997-07-29
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Expires: 2014-09-02
Abstract
Abstract In the apparatus for processing a color image, a data signal representing another information differs from the color image is generated by a generating means. The another information is embedded into the color image by varying one of a color difference and a chroma of the color image in accordance with the data signal by an image processing means.
Inventors
- 👤 Haruko Kawakami
- 👤 Hidekazu Sekizawa
- 👤 Naofumi Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:10
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/01; H; H04; H04N; H04N1/00; H04N1/46; G06; G06T; G06T1/00; G06T1/0021; G06T1/0028; H04N1/32; H04N1/32101; H04N1/32144; H04N1/32149; H04N1/32203; H04N1/32208; H04N1/32309; G06T2201/00; G06T2201/005; G06T2201/0051; H04N2201/00; H04N2201/32; H04N2201/3201; H04N2201/3269; H04N2201/327; H04N2201/3271; H04N2201/3278
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
77 words
An apparatus for processing a color image, comprising: means for generating a pattern image based on a data signal to be embedded in the color image; and image processing means for varying at least one of a color difference signal and a chroma signal of the color image in accordance with the pattern image while keeping a sum of three color component signals of the color image constant so that the color image includes the data signal.
Claim 2
Independent Claim
77 words
An apparatus for processing a color image, comprising: means for generating a pattern image based on a data signal to be embedded in the color image; and image processing means for varying at least one of a color difference signal and a chroma signal of the color image in accordance with the pattern image while keeping a sum of three color component signals of the color image constant so that the color image includes the data signal.
Claim 3
Dependent Claim
17 words
The apparatus according to claim 1, wherein said three color component signals are primaries of substructive mixture.
Claim 4
Dependent Claim
17 words
The apparatus according to claim 1, wherein said three color component signals are primaries of additive mixture.
Claim 5
Independent Claim
97 words
The apparatus for processing a color image, comprising: means for generating a pattern image based on information to be embedded in the color image; and image processing means for varying at least one of a color difference signal and a chroma signal of the color image in accordance with the pattern image so that the color image includes the information, wherein said image processing means includes: means for converting three color component signals into a luminance signal, and a first and second color difference signals, and means for embedding the information into the second color difference signal.
Claim 6
Independent Claim
97 words
The apparatus for processing a color image, comprising: means for generating a pattern image based on information to be embedded in the color image; and image processing means for varying at least one of a color difference signal and a chroma signal of the color image in accordance with the pattern image so that the color image includes the information, wherein said image processing means includes: means for converting three color component signals into a luminance signal, and a first and second color difference signals, and means for embedding the information into the second color difference signal.
Claim 7
Dependent Claim
30 words
The apparatus according to claim 4, wherein said first color difference signal is a red-green color difference signal and said second color difference signal is a yellow-blue color difference signal.
Claim 8
Independent Claim
99 words
The apparatus for processing a color image, comprising: means for generating a pattern image based on information to be embedded in the color image; and image processing means for varying at least one of a color difference signal and a chroma signal of the color image in accordance with the pattern image so that the color image includes the information, wherein said image processing means includes: means for converting three color component signals into a luminance signal, and a first and second color difference signals, and means for embedding the information into the first and second color difference signals.
Claim 9
Independent Claim
99 words
The apparatus for processing a color image, comprising: means for generating a pattern image based on information to be embedded in the color image; and image processing means for varying at least one of a color difference signal and a chroma signal of the color image in accordance with the pattern image so that the color image includes the information, wherein said image processing means includes: means for converting three color component signals into a luminance signal, and a first and second color difference signals, and means for embedding the information into the first and second color difference signals.
Claim 10
Dependent Claim
30 words
The apparatus according to claim 6, wherein said first color difference signal is a red-green color difference signal and said second color difference signal is a yellow-blue color difference signal.
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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) | 2000-07-28 | 2001-01-27 | 2001-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-07-28 | 2005-01-27 | 2005-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-07-28 | 2009-01-27 | 2009-07-29 | $7700.00 | Window Closed / Lapsed |