US5568193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image pickup device providing enhanced horizontal bandwidth
Assignee: Canon Inc
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Filing: 1995-09-06
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Granted: 1996-10-22
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Expires: 2015-09-06
Abstract
Abstract To obtain an image pickup device capable of obtaining wide-band R, G, and B signals, R, G, and B signals are generated by a coincidence and matrix circuit using Ye/Cy and Mg/G components of outputs from an image pickup element in units of pixels. A wide-band signal generation circuit generates wide-band signal components from another arithmetic operation using the outputs from the image pickup element. The resultant wide-band signal components are mixed with the R, G, and B signals using an adder and a subtracter, thereby obtaining wide-band R, G, and B signals. Therefore, the wide-band R, G, and B signals suitable for multimedia applications and free from color blurring at a high resolution can be obtained.
Inventors
- 👤 Norihiro Kawahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:16
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/64; H04N9/646; H04N25/00; H04N25/10; H04N25/11; H04N25/13; H04N25/135; H04N25/136; H04N25/40; H04N25/44; H04N25/447; H04N5/00; H04N5/14; H04N5/20; H04N5/205; H04N5/208
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
75 words
An image pickup device comprising: matrix operation means for performing a matrix operation on a video signal from an image pickup element to generate R (red), G (green), and B (blue) signals; wide-band signal generation means for performing signal processing excluding horizontal processing for the video signal to generate a wide-band signal; and mixing means for mixing the wide-band signal to the R, G, and B signals to generate wide-band R, G, and B signals.
Claim 2
Dependent Claim
75 words
An image pickup device comprising: matrix operation means for performing a matrix operation on a video signal from an image pickup element to generate R (red), G (green), and B (blue) signals; wide-band signal generation means for performing signal processing excluding horizontal processing for the video signal to generate a wide-band signal; and mixing means for mixing the wide-band signal to the R, G, and B signals to generate wide-band R, G, and B signals.
Claim 3
Dependent Claim
194 words
An image pickup device which outputs a first video signal including first and second color component signals from an image pickup element every other pixel and a second video signal including third and four color component signals from said image pickup element every other pixel, converts the first and second video signals into a first digital video signal including first and second digital color component signals and a second digital video signal including third and fourth digital color component signals, and performs signal processing for the first and second digital video signals to output a video luminance signal, a video color signal, and digital R, G, and B signals, comprising: matrix operation means for coinciding the first and second digital video signals and performing a matrix operation on the first to fourth digital color component signals to generate R, G, and B signals; and mixing means for generating a wide-band signal component from the first and third color component signals and a wide-band signal component from the second and fourth color component signals and mixing the wide-band signal components with the R, G, and B signals to generate wide-band R, G, and B signals.
Claim 4
Dependent Claim
194 words
An image pickup device which outputs a first video signal including first and second color component signals from an image pickup element every other pixel and a second video signal including third and four color component signals from said image pickup element every other pixel, converts the first and second video signals into a first digital video signal including first and second digital color component signals and a second digital video signal including third and fourth digital color component signals, and performs signal processing for the first and second digital video signals to output a video luminance signal, a video color signal, and digital R, G, and B signals, comprising: matrix operation means for coinciding the first and second digital video signals and performing a matrix operation on the first to fourth digital color component signals to generate R, G, and B signals; and mixing means for generating a wide-band signal component from the first and third color component signals and a wide-band signal component from the second and fourth color component signals and mixing the wide-band signal components with the R, G, and B signals to generate wide-band R, G, and B signals.
Claim 5
Dependent Claim
57 words
A device according to claim 2, wherein the first color component signal output from said image pickup element is a Ye (yellow) component signal, the second color component signal is a Cy (cyan) component signal, the third color component signal is an Mg (magenta) component signal, and the fourth color component signal is a G component signal.
Claim 6
Dependent Claim
54 words
A device according to claim 2, wherein the first color component signal output from said image pickup element is a Cy component signal, the second color component signal is a Ye component signal, the third color component signal is an Mg component signal, and the fourth color component signal is a G component signal.
Claim 7
Dependent Claim
119 words
A device according to claim 2, wherein in one horizontal period of a television signal, the first color component signal output from said image pickup element is a Cy component signal, the second color component signal is a Ye component signal, the third color component signal is an Mg component signal, and the fourth color component signal is a G component signal, and in next one horizontal period of the television signal, the first color component signal output from said image pickup element is a Ye component signal, the second color component signal is a Cy component signal, the third color component signal is an Mg component signal, and the fourth color component signal is a G component signal.
References Cited (Backward Citations)
US4246601A
Cited
US5170249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-10-22 | 2000-04-22 | 2000-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-10-22 | 2004-04-22 | 2004-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-10-22 | 2008-04-22 | 2008-10-22 | $7700.00 | Window Closed / Lapsed |