US3735030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color television camera utilizing two pickup tubes
Assignee: Robert Bosch Fernsehanlagen GmbH
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Filing: 1971-07-07
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Granted: 1973-05-22
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Expires: 1991-07-07
Abstract
Abstract A color television camera comprises two camera tubes and optical means splitting an incident light beam into three partial beams corresponding respectively to three different parts of the visible spectrum, the green or luminance partial beam being supplied to one of the camera tubes and the red and the blue partial beam being supplied to the other camera tube. The red image is mirror inverted with respect to the blue image; the blue image and the red image are both scanned by one electron beam of said other tube.
Inventors
- 👤 H Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:36
CPC Classifications
H; H04; H04N; H04N23/00; H04N23/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
284 words
A color television camera comprising: A. two camera tubes, each having a face plate, B. first optical means for forming an image in a first spectral region of the visible spectrum on the face plate of a first of the two camera tubes, C. second optical means for forming an image in the red region and an image in the blue region of the visible spectrum on separate areas of the face plate of a second of the two camera tubes, the red image being mirror inverted with respect to the blue image, and D. means for scanning both the red image and the blue image with a single electron beam operated in vertical deflection and horizontal deflection, wherein one of the two images on the face plate of the second camera tube is located above, that is to say in the direction of said vertical deflection with respect to the other of the two images on the face plate of the second camera tube, and wherein said means for scanning operates by causing a vertical deflection of the electron beam from a line in one of the two images to a line in the other of the two images at least once between the beginning of scanning of a first line in one of the two images and the beginning of scanning of a second line in said one of the two images, whereby the vertical deflection is used to time-interlace the pickup of segments no longer than line segments from the red image and the blue image by the single electron beam of the second camera tube while the horizontal deflection of the second camera tube operates in a conventional horizontal scan.
Claim 2
Dependent Claim
284 words
A color television camera comprising: A. two camera tubes, each having a face plate, B. first optical means for forming an image in a first spectral region of the visible spectrum on the face plate of a first of the two camera tubes, C. second optical means for forming an image in the red region and an image in the blue region of the visible spectrum on separate areas of the face plate of a second of the two camera tubes, the red image being mirror inverted with respect to the blue image, and D. means for scanning both the red image and the blue image with a single electron beam operated in vertical deflection and horizontal deflection, wherein one of the two images on the face plate of the second camera tube is located above, that is to say in the direction of said vertical deflection with respect to the other of the two images on the face plate of the second camera tube, and wherein said means for scanning operates by causing a vertical deflection of the electron beam from a line in one of the two images to a line in the other of the two images at least once between the beginning of scanning of a first line in one of the two images and the beginning of scanning of a second line in said one of the two images, whereby the vertical deflection is used to time-interlace the pickup of segments no longer than line segments from the red image and the blue image by the single electron beam of the second camera tube while the horizontal deflection of the second camera tube operates in a conventional horizontal scan.
Claim 3
Dependent Claim
15 words
A camera according to claim 1 wherein the first spectral region is the luminance region.
Claim 4
Dependent Claim
15 words
A camera according to claim 1 wherein the first spectral region is the green region.
Claim 5
Dependent Claim
25 words
A color television camera according to claim 1, wherein said electron beam completely scans the red image and the blue image alternately line by line.
Claim 6
Dependent Claim
36 words
A color television camera according to claim 1 wherein said electron beam scans the red image and the blue image alternately image spot in one line by image spot in a line in the alternate image.
Claim 7
Dependent Claim
58 words
A color television camera according to claim 5 wherein said electron beam forms a scanning spot on the face of the second camera tube, and wherein the area of the scanning spot is smaller than the area of one image spot and wherein, during successive frames, one fraction of said image spots after the other are being scanned.
Claim 8
Dependent Claim
118 words
A color television camera according to claim 1, wherein said first and second optical means comprise the combination of: A. a main camera lens system, B. beam splitting means providing partial first, red, and blue light beams respectively in said first region, in the red region, and in the blue region of the visible spectrum, C. an additional lens system for reducing the size of the red image and the blue image, D. a roof prism situated in the path of one of the blue or red beams, and wherein the optical path respectively of the red beam and the blue beam has the same optical path length as the other of the red and the blue beam.
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) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |