Patent US6094205A successfully refreshed from Google Patents.
US6094205A
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Assignee: Funai Electric Co Ltd
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Filing: 1997-07-14
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Granted: 2000-07-25
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Expires: 2017-07-14
Abstract
Abstract In a method of enhancing a quality of a video signal (Yin), an absolute value (ST) of a first derivative of the video signal (Yin) is obtained (51-59), and the video signal (Yin) is processed (53-57, 61-69) in dependence upon the absolute value (ST) of the derivative of the video signal (Yin).
Inventors
- 👤 Cornelis A. M. Jaspers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:07
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/64; H04N5/00; H04N5/14; H04N5/20; H04N5/205; H04N5/208
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
93 words
A method of enhancing a quality of a video signal, the method comprising the steps: forming a first derivative of said video signal; forming an absolute value of said first derivative of said video signal; and processing said video signal in dependence upon said absolute value of said first derivative of said video signal, wherein said processing step comprises the steps: deriving a contour signal from said video signal; forming a complementary factor of said absolute value by subtracting said absolute value from unity; and multiplying said contour signal by said complementary factor.
Claim 2
Independent Claim
93 words
A method of enhancing a quality of a video signal, the method comprising the steps: forming a first derivative of said video signal; forming an absolute value of said first derivative of said video signal; and processing said video signal in dependence upon said absolute value of said first derivative of said video signal, wherein said processing step comprises the steps: deriving a contour signal from said video signal; forming a complementary factor of said absolute value by subtracting said absolute value from unity; and multiplying said contour signal by said complementary factor.
Claim 3
Independent Claim
101 words
An apparatus for enhancing a quality of a video signal, the apparatus comprising: means for forming a first derivative of said video signal; means for forming an absolute value of said first derivative of said video signal; and means for processing said video signal in dependence upon said absolute value of said first derivative of said video signal, wherein said processing means comprises: means for deriving a contour signal from said video signal; means for forming a complementary factor of said absolute value by subtracting said absolute value from unity; and means for multiplying said contour signal by said complementary factor.
Claim 4
Independent Claim
101 words
An apparatus for enhancing a quality of a video signal, the apparatus comprising: means for forming a first derivative of said video signal; means for forming an absolute value of said first derivative of said video signal; and means for processing said video signal in dependence upon said absolute value of said first derivative of said video signal, wherein said processing means comprises: means for deriving a contour signal from said video signal; means for forming a complementary factor of said absolute value by subtracting said absolute value from unity; and means for multiplying said contour signal by said complementary factor.
Claim 5
Dependent Claim
122 words
A display apparatus for displaying a video signal, the display apparatus comprising: means for receiving and processing a video signal; an apparatus for enhancing a quality of a video signal, said enhancing apparatus comprising: means for forming a first derivative of said video signal; means for forming an absolute value of said first derivative of said video signal; and means for processing said video signal in dependence upon said absolute value of said first derivative of said video signal, wherein said processing means comprises: means for deriving a contour signal from said video signal; means for forming a complementary factor of said absolute value by subtracting said absolute value from unity; and means for multiplying said contour signal by said complementary factor.
Claim 6
Dependent Claim
122 words
A display apparatus for displaying a video signal, the display apparatus comprising: means for receiving and processing a video signal; an apparatus for enhancing a quality of a video signal, said enhancing apparatus comprising: means for forming a first derivative of said video signal; means for forming an absolute value of said first derivative of said video signal; and means for processing said video signal in dependence upon said absolute value of said first derivative of said video signal, wherein said processing means comprises: means for deriving a contour signal from said video signal; means for forming a complementary factor of said absolute value by subtracting said absolute value from unity; and means for multiplying said contour signal by said complementary factor.
Claim 7
Dependent Claim
116 words
A camera comprising: a sensor for picking up an image to provide a video signal; an apparatus for enhancing a quality of said video signal, said enhancing apparatus comprising: means for obtaining a first derivative of said video signal; means for obtaining an absolute value of said first derivative of said video signal; and means for processing said video signal in dependence upon said absolute value of said first derivative of said video signal, said processing means comprising: means for deriving a contour signal from said video signal; means for forming a complementary factor of said absolute value by subtracting said absolute value from unity; and means for multiplying said contour signal by said complementary factor.
Claim 8
Dependent Claim
116 words
A camera comprising: a sensor for picking up an image to provide a video signal; an apparatus for enhancing a quality of said video signal, said enhancing apparatus comprising: means for obtaining a first derivative of said video signal; means for obtaining an absolute value of said first derivative of said video signal; and means for processing said video signal in dependence upon said absolute value of said first derivative of said video signal, said processing means comprising: means for deriving a contour signal from said video signal; means for forming a complementary factor of said absolute value by subtracting said absolute value from unity; and means for multiplying said contour signal by said complementary factor.
Claim 9
Dependent Claim
67 words
The method as claimed in claim 1, wherein the processing step further comprises: forming a luminance transient improved signal from said video signal; fading said luminance transient improved signal complementary with said video signal in dependence on said absolute value of said first derivative of said video signal; and adding said multiplied contour signal and said faded luminance transient improved signal to form an enhanced video signal.
Claim 10
Dependent Claim
76 words
The apparatus as claimed in claim 2, wherein said apparatus further comprises: means for forming a luminance transient improved signal from said video signal; means for fading said luminance transient improved signal complementary with said video signal in dependence upon said absolute value of said first derivative of said video signal; and means for adding an output signal of said fading means and an output signal of said multiplying means to form an enhanced video signal.
Claim 11
Dependent Claim
78 words
The display apparatus as claimed in claim 3, wherein said display apparatus further comprises: means for forming a luminance transient improved signal from said video signal; means for fading said luminance transient improved signal complementary with said video signal in dependence upon said absolute value of said first derivative of said video signal; and means for adding an output signal of said fading means and an output signal of said multiplying means to form an enhanced video signal.
Claim 12
Dependent Claim
76 words
The camera as claimed in claim 2, wherein said camera further comprises: means for forming a luminance transient improved signal from said video signal; means for fading said luminance transient improved signal complementary with said video signal in dependence upon said absolute value of said first derivative of said video signal; and means for adding an output signal of said fading means and an output signal of said multiplying means to form an enhanced video 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) | 2003-07-25 | 2004-01-24 | 2004-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-07-25 | 2008-01-24 | 2008-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-07-25 | 2012-01-24 | 2012-07-25 | $7700.00 | Window Closed / Lapsed |