US4907074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image pickup apparatus having color separation filters and forming line-sequential luminance and color-difference signals
Assignee: Canon Inc
•
Filing: 1988-12-23
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Granted: 1990-03-06
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Expires: 2008-12-23
Abstract
Abstract An image pickup apparatus has at least one image pickup device such as an NDI provided with a plurality of picture elements arranged in horizontal lines to form a matrix on which is placed a color separation filter. The color separation filter has a plurality of filter elements including first filter elements for separating a first color, and second and third filter elements which are disposed in line sequence between adjacent first filter elements. A plurality of horizontal lines of the picture elements are read simultaneously during each horizontal scan. A low-band luminance signal for forming a color difference signal is formed from signals derived from a single horizontal line, while high-band luminance signal is formed from signals derived from the plurality of horizontal lines which are read simultaneously during each scanning.
Inventors
- 👤 Seiji Hashimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:45
CPC Classifications
H; H04; H04N; H04N23/00; H04N23/80; H04N23/84; H04N25/00; H04N25/10; H04N25/11; H04N25/13; H04N25/133; H04N25/134
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
159 words
An image pickup apparatus comprising: at least one solid-state image pickup device having a plurality of picture elements arranged in horizontal lines to form a matrix; a color separation filter means provided on said image pickup device and having color-separation filter elements arranged corresponding to respective ones of said picture elements, said filter elements including first filter elements for separating a first color and arranged in a checkerboard pattern, and second and third color separation filters for separating second and third colors, respectively, and arranged in two-line sequence between adjacent ones of said first filter elements; means for reading information from a plurality of horizontal lines of said picture elements; means for respectively forming a line-sequential low-band luminance signal and a line-sequential color difference signal, in accordance with the information read from a respective one of said plurality of horizontal lines; and means for forming a high-band luminance signal from the information read from said plurality of horizontal lines.
Claim 2
Dependent Claim
159 words
An image pickup apparatus comprising: at least one solid-state image pickup device having a plurality of picture elements arranged in horizontal lines to form a matrix; a color separation filter means provided on said image pickup device and having color-separation filter elements arranged corresponding to respective ones of said picture elements, said filter elements including first filter elements for separating a first color and arranged in a checkerboard pattern, and second and third color separation filters for separating second and third colors, respectively, and arranged in two-line sequence between adjacent ones of said first filter elements; means for reading information from a plurality of horizontal lines of said picture elements; means for respectively forming a line-sequential low-band luminance signal and a line-sequential color difference signal, in accordance with the information read from a respective one of said plurality of horizontal lines; and means for forming a high-band luminance signal from the information read from said plurality of horizontal lines.
Claim 3
Dependent Claim
22 words
An image pickup apparatus according to claim 1, wherein said reading means reads information from two lines in a television scanning period.
Claim 4
Dependent Claim
44 words
An image pickup apparatus according to claim 1, wherein said reading means reads information from a combination of two lines in such a manner that the combination of lines to be read by said reading means shifts by one horizontal line in every field.
Claim 5
Dependent Claim
40 words
An image pickup apparatus according to claim 1, wherein said high-band luminance signal forming means forms a high-band luminance signal in dot sequence from color information of said plurality of horizontal lines which is obtained through said first filter elements.
Claim 6
Dependent Claim
35 words
An image pickup apparatus according to claim 1, wherein said low-band luminance signal and color difference signal forming means forms the low-band luminance signal and the color difference signal each from a respective horizontal line.
Claim 7
Dependent Claim
20 words
An image pickup apparatus according to claim 1, wherein said first filter elements are green color or white color filters.
Claim 8
Dependent Claim
99 words
An image pickup device comprising: at least one solid-state image pickup device having a plurality of picture elements arranged in horizontal lines to form a matrix; and a color separation filter means provided on said image pickup device and having color-separation filter elements arranged corresponding to respective ones of said picture elements, said filter elements including first filter elements for separating a first color and arranged in a checkerboard pattern, and second and third color separation filter elements for separating second and third colors, respectively, and arranged in horizontal two-line sequence between adjacent ones of said first filter elements.
Claim 9
Dependent Claim
99 words
An image pickup device comprising: at least one solid-state image pickup device having a plurality of picture elements arranged in horizontal lines to form a matrix; and a color separation filter means provided on said image pickup device and having color-separation filter elements arranged corresponding to respective ones of said picture elements, said filter elements including first filter elements for separating a first color and arranged in a checkerboard pattern, and second and third color separation filter elements for separating second and third colors, respectively, and arranged in horizontal two-line sequence between adjacent ones of said first filter elements.
Claim 10
Dependent Claim
20 words
An image pickup device according to claim 7, wherein said first filter elements are green color or white color filters.
Claim 11
Dependent Claim
24 words
An image pickup device according to claim 7, further comprising means for reading information from a plurality of horizontal lines of said picture elements.
Claim 12
Dependent Claim
57 words
An image pickup device according to claim 9, further comprising means for respectively forming a line-sequential luminance signal containing lower frequencies of the information read from the horizontal lines and excluding higher frequencies of the information, and a line-sequential color difference signal, in accordance with the information read from respective line of said plurality of horizontal lines.
Claim 13
Dependent Claim
44 words
An image pickup device according to claim 9, further comprising means for forming a luminance signal including higher frequencies of the information read from the horizontal lines and excluding lower frequencies of that information, from the information read from said plurality of horizontal lines.
Claim 14
Dependent Claim
123 words
An image pickup device comprising: at least one solid-state image pickup device having a plurality of picture elements arranged in horizontal lines to form a matrix; a color separation filter means provided on said image pickup device and having color-separation filter elements arranged corresponding to respective ones of said picture elements, said filter elements including first filter elements for separating a first color and arranged in a checkerboard pattern, and second and third color separation filter elements for separating second and third colors, respectively, and arranged in horizontal two-line sequence between adjacent ones of said first filter elements; and means for reading information from two lines simultaneously, wherein said reading means reads information from a plurality of horizontal lines of said picture elements.
Claim 15
Dependent Claim
123 words
An image pickup device comprising: at least one solid-state image pickup device having a plurality of picture elements arranged in horizontal lines to form a matrix; a color separation filter means provided on said image pickup device and having color-separation filter elements arranged corresponding to respective ones of said picture elements, said filter elements including first filter elements for separating a first color and arranged in a checkerboard pattern, and second and third color separation filter elements for separating second and third colors, respectively, and arranged in horizontal two-line sequence between adjacent ones of said first filter elements; and means for reading information from two lines simultaneously, wherein said reading means reads information from a plurality of horizontal lines of said picture elements.
Claim 16
Dependent Claim
25 words
An image pickup device according to claim 12, wherein said reading means reads information from two lines in a period of one television horizontal line.
Claim 17
Dependent Claim
151 words
An image pickup device comprising: at least one solid-state image pickup device having a plurality of picture elements arranged in horizontal lines to form a matrix; a color separation filter means provided on said image pickup device and having color-separation filter elements arranged corresponding to respective ones of said picture elements, said filter elements including first filter elements for separating a first color and arranged in a checkerboard pattern, and second and third color separation filter elements for separating second and third colors, respectively, and arranged in horizontal two-line sequence between adjacent ones of said first filter elements; and means for reading information from a plurality of horizontal lines of said picture elements, wherein said reading means simultaneously reads information from a combination of two lines in such a manner that the combination of lines to be simultaneously read by said reading means shifts by one horizontal line in every field.
Claim 18
Dependent Claim
151 words
An image pickup device comprising: at least one solid-state image pickup device having a plurality of picture elements arranged in horizontal lines to form a matrix; a color separation filter means provided on said image pickup device and having color-separation filter elements arranged corresponding to respective ones of said picture elements, said filter elements including first filter elements for separating a first color and arranged in a checkerboard pattern, and second and third color separation filter elements for separating second and third colors, respectively, and arranged in horizontal two-line sequence between adjacent ones of said first filter elements; and means for reading information from a plurality of horizontal lines of said picture elements, wherein said reading means simultaneously reads information from a combination of two lines in such a manner that the combination of lines to be simultaneously read by said reading means shifts by one horizontal line in every field.
References Cited (Backward Citations)
US3828121A
Cited
US4281338A
Cited
US4668975A
Cited
US4578699A
Cited
US4686554A
Cited
US4652911A
Cited
US4688085A
Cited
US4605956A
Cited
US4697208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-03-05 | 1993-09-04 | 1994-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-05 | 1997-09-04 | 1998-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-05 | 2001-09-04 | 2002-03-06 | $7700.00 | Window Closed / Lapsed |